Update changelog

- AdvancedPaletteManager incorrectly handled negative y positions
- FocusManager still had a pointer to a view that was destroyed in the cheats panel. After changing focus, memory got corrupted.

.github/workflows/nightly.yml

@@ -2,7 +2,6 @@ name: Build Pico Launcher
 
 on:
   push:
-    branches: ["develop"]
     paths-ignore:
       - 'README.md'
   pull_request:
@@ -14,12 +13,8 @@ on:
 jobs:
   pico_launcher:
     runs-on: ubuntu-latest
-    container: skylyrac/blocksds:slim-v1.13.1
+    container: skylyrac/blocksds:slim-v1.16.0
     name: Build Pico Launcher
-    env:
-      DOTNET_CLI_TELEMETRY_OPTOUT: 1
-      DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
-      DOTNET_SYSTEM_GLOBALIZATION_INVARIANT: 1
     steps:
       - name: Checkout repo
         uses: actions/checkout@v4
@@ -34,4 +29,4 @@ jobs:
           path: |
             _pico/
             LAUNCHER.nds
-          name: Pico Launcher
+          name: Pico_Launcher

.github/workflows/release.yml

@@ -0,0 +1,39 @@
+name: Build Pico Launcher release
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  pico_launcher:
+    runs-on: ubuntu-latest
+    container: skylyrac/blocksds:slim-v1.16.0
+    name: Build Pico Launcher
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v4
+        with:
+          submodules: true
+      - name: Install zip
+        run:
+          apt-get update && apt-get -y install zip
+      - name: Run build script
+        run: |
+          make
+      - name: Publish build to GH Actions
+        uses: actions/upload-artifact@v4
+        with:
+          path: |
+            _pico/
+            LAUNCHER.nds
+          name: Pico_Launcher
+      - name: Package for release
+        run: |
+          mkdir Pico_Launcher
+          cp -r _pico/ LAUNCHER.nds Pico_Launcher
+          cd Pico_Launcher && zip -r $PWD.zip *
+      - name: Release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: |
+            Pico_Launcher.zip

CHANGELOG.md

@@ -0,0 +1,37 @@
+# Changelog
+
+## [Unreleased]
+
+## [v1.3.0] - 18 Apr 2026
+
+### Added
+- Ability to set the position of the top screen cover image in custom themes
+- Support for fast scrolling with the L and R buttons in coverflow display mode
+- Support for touch input
+
+### Fixed
+- Use after free bug with the texture load request in Label3DView. This occurred for example when spamming B in banner list mode.
+
+## [v1.2.0] - 29 Mar 2026
+
+### Added
+- Support for cheats with Pico Loader API v3
+- Hide files/dirs with hidden attribute, or with a name starting with a period
+- New customization options for custom themes
+    - Position of elements on the top screen
+    - Text colors
+    - Blend colors
+
+### Changed
+- File name on the top screen now uses marquee when too long
+
+### Fixed
+- Improve error handling for banners to better detect if a rom has a valid banner
+
+## [v1.1.0] - 11 Jan 2026
+
+### Added
+- Support for Pico Loader API v2. This makes it possible to return to Pico Launcher from supported homebrew applications.
+
+## [v1.0.0] - 25 Nov 2025
+- Initial release

Makefile.arm9

@@ -105,17 +105,17 @@ INCLUDEFLAGS	:= $(foreach path,$(INCLUDEDIRS),-I$(path)) \
 LIBDIRSFLAGS	:= $(foreach path,$(LIBDIRS),-L$(path)/lib)
 
 ASFLAGS		+= -x assembler-with-cpp $(DEFINES) $(INCLUDEFLAGS) \
-		   $(ARCH) -ffunction-sections -fdata-sections \
+		   $(ARCH) -g -ffunction-sections -fdata-sections \
 		   -specs=$(SPECS)
 
 CFLAGS		+= -std=gnu17 $(WARNFLAGS) $(DEFINES) $(INCLUDEFLAGS) \
-		   $(ARCH) -O2 -ffunction-sections -fdata-sections \
+		   $(ARCH) -g -O2 -ffunction-sections -fdata-sections \
 		   -fno-devirtualize-speculatively \
 		   -Werror=return-type \
 		   -specs=$(SPECS)
 
 CXXFLAGS	+= -std=gnu++23 $(WARNFLAGS) $(DEFINES) $(INCLUDEFLAGS) \
-		   $(ARCH) -O2 -ffunction-sections -fdata-sections \
+		   $(ARCH) -g -O2 -ffunction-sections -fdata-sections \
 		   -fno-exceptions -fno-rtti \
 		   -fno-devirtualize-speculatively \
 		   -Werror=return-type \

README.md

@@ -15,6 +15,7 @@ This repository contains Pico Launcher, which is a front-end for [Pico Loader](h
 - [Covers](docs/Covers.md)
 - [Material Design 3 and custom themes](docs/Themes.md)
 - Support for background music (see [Themes](docs/Themes.md))
+- Support for cheats (See [Cheats](docs/Cheats.md))
 
 General usage documentation can be found here: [Usage](docs/Usage.md).
 
@@ -22,7 +23,7 @@ General usage documentation can be found here: [Usage](docs/Usage.md).
 We recommend using WSL (Windows Subsystem for Linux), or MSYS2 to compile this repository.
 The steps provided will assume you already have one of those environments set up.
 
-1. Install [BlocksDS](https://blocksds.skylyrac.net/docs/setup/options/)
+1. Install [BlocksDS](https://blocksds.skylyrac.net/docs/setup/)
 
 ## Compiling
 

_pico/themes/raspberry/theme.json

@@ -8,5 +8,125 @@
         "g": 217,
         "b": 255
     },
-    "darkTheme": false
+    "darkTheme": false,
+    "topIcon": {
+        "position": {
+            "x": 24,
+            "y": 132
+        },
+        "blendColor": {
+            "r": 200,
+            "g": 200,
+            "b": 200
+        }
+    },
+    "topBannerTextLine0": {
+        "position": {
+            "x": 70,
+            "y": 126
+        },
+        "width": 176,
+        "textColor": {
+            "r": 30,
+            "g": 30,
+            "b": 30
+        },
+        "blendColor": {
+            "r": 200,
+            "g": 200,
+            "b": 200
+        }
+    },
+    "topBannerTextLine1": {
+        "position": {
+            "x": 70,
+            "y": 141
+        },
+        "width": 176,
+        "textColor": {
+            "r": 30,
+            "g": 30,
+            "b": 30
+        },
+        "blendColor": {
+            "r": 200,
+            "g": 200,
+            "b": 200
+        }
+    },
+    "topBannerTextLine2": {
+        "position": {
+            "x": 70,
+            "y": 155
+        },
+        "width": 176,
+        "textColor": {
+            "r": 30,
+            "g": 30,
+            "b": 30
+        },
+        "blendColor": {
+            "r": 200,
+            "g": 200,
+            "b": 200
+        }
+    },
+    "topFileNameText": {
+        "position": {
+            "x": 18,
+            "y": 170
+        },
+        "width": 220,
+        "textColor": {
+            "r": 30,
+            "g": 30,
+            "b": 30
+        },
+        "blendColor": {
+            "r": 200,
+            "g": 200,
+            "b": 200
+        }
+    },
+    "topCover": {
+        "position": {
+            "x": 75,
+            "y": 18
+        }
+    },
+    "gridIcon": {
+        "blendColor": {
+            "r": 200,
+            "g": 200,
+            "b": 200
+        }
+    },
+    "bannerListIcon": {
+        "blendColor": {
+            "r": 200,
+            "g": 200,
+            "b": 200
+        }
+    },
+    "bannerListTextLine0": {
+        "textColor": {
+            "r": 30,
+            "g": 30,
+            "b": 30
+        }
+    },
+    "bannerListTextLine1": {
+        "textColor": {
+            "r": 30,
+            "g": 30,
+            "b": 30
+        }
+    },
+    "bannerListTextLine2": {
+        "textColor": {
+            "r": 30,
+            "g": 30,
+            "b": 30
+        }
+    }
 }

arm7/source/main.cpp

@@ -30,6 +30,7 @@
 #include "ExitMode.h"
 #include "Arm7State.h"
 #include "mmc/tmio.h"
+#include "touchScreen.h"
 
 static NocashOutputStream sNocashOutputStream;
 static PlainLogger sPlainLogger = PlainLogger(LogLevel::All, std::unique_ptr<IOutputStream>(&sNocashOutputStream));
@@ -42,19 +43,14 @@ static RtcIpcService sRtcIpcService;
 
 ILogger* gLogger = &sThreadSafeLogger;
 
-static rtos_event_t sVBlankEvent;
+static rtos_event_t sVCountEvent;
 static ExitMode sExitMode;
 static Arm7State sState;
 static volatile u8 sMcuIrqFlag = false;
 
-static void vblankIrq(u32 irqMask)
-{
-    rtos_signalEvent(&sVBlankEvent);
-}
-
 static void vcountIrq(u32 irqMask)
 {
-    SHARED_KEY_XY = REG_RCNT0_H;
+    rtos_signalEvent(&sVCountEvent);
 }
 
 static void mcuIrq(u32 irq2Mask)
@@ -88,12 +84,13 @@ static void checkMcuIrq(void)
     }
 }
 
-static void initializeVBlankIrq()
+static void initializeVCountIrq()
 {
-    rtos_createEvent(&sVBlankEvent);
-    rtos_setIrqFunc(RTOS_IRQ_VBLANK, vblankIrq);
-    rtos_enableIrqMask(RTOS_IRQ_VBLANK);
-    gfx_setVBlankIrqEnabled(true);
+    rtos_createEvent(&sVCountEvent);
+    gfx_setVCountMatchLine(96);
+    rtos_setIrqFunc(RTOS_IRQ_VCOUNT, vcountIrq);
+    rtos_enableIrqMask(RTOS_IRQ_VCOUNT);
+    gfx_setVCountMatchIrqEnabled(true);
 }
 
 static void clearSoundRegisters()
@@ -145,12 +142,7 @@ static void initializeArm7()
     sSoundIpcService.Start();
     sRtcIpcService.Start();
 
-    gfx_setVCountMatchLine(96);
-    rtos_setIrqFunc(RTOS_IRQ_VCOUNT, vcountIrq);
-    rtos_enableIrqMask(RTOS_IRQ_VCOUNT);
-    gfx_setVCountMatchIrqEnabled(true);
-
-    initializeVBlankIrq();
+    initializeVCountIrq();
 
     if (isDSiMode())
     {
@@ -158,6 +150,8 @@ static void initializeArm7()
         rtos_enableIrq2Mask(RTOS_IRQ2_MCU);
     }
 
+    touch_init();
+
     ipc_setArm7SyncBits(7);
 }
 
@@ -233,7 +227,16 @@ int main()
 
     while (true)
     {
-        rtos_waitEvent(&sVBlankEvent, true, true);
+        rtos_waitEvent(&sVCountEvent, true, true);
+        u16 keys = REG_RCNT0_H | RCNT0_H_DATA_PEN;
+        touchPosition touchPos;
+        if (touch_update(touchPos))
+        {
+            keys &= ~RCNT0_H_DATA_PEN; // pen down
+            SHARED_TOUCH_X = touchPos.px;
+            SHARED_TOUCH_Y = touchPos.py;
+        }
+        SHARED_KEY_XY = keys;
         updateArm7();
     }
 

arm7/source/touchScreen.cpp

@@ -0,0 +1,146 @@
+#include "common.h"
+#include <nds/input.h>
+#include <nds/arm7/touch.h>
+
+// See: https://github.com/blocksds/libnds/blob/master/source/arm7/input.c
+
+// === Touchscreen filter configuration ===
+
+// Replace Z1/Z2 values with X/Y noisiness measurements.
+// #define TOUCH_DEBUG_NOISINESS
+
+// The number of frames to debounce/hold pen presses for.
+// Set to 0 to disable.
+#define PEN_DOWN_DEBOUNCE 1
+// The shift (1 << N) used for the IIR filter to average noisy samples across
+// time. Set to 0 to disable.
+#define TOUCH_MAX_NOISE_PEN_UP_IIR_SHIFT 5
+
+// The maximum value of noisiness for pressing a pen down (measurement now valid).
+#define TOUCH_MAX_NOISE_PEN_DOWN 38
+// The minimum value of noisiness for lifting a pen up (measurement no longer valid).
+#define TOUCH_MAX_NOISE_PEN_UP   50
+
+// === Touchscreen filter ===
+
+// IIR filter constants.
+#define TOUCH_MAX_NOISE_PEN_UP_IIR_RATIO (1 << TOUCH_MAX_NOISE_PEN_UP_IIR_SHIFT)
+#define TOUCH_MAX_NOISE_PEN_UP_IIR_MIN (TOUCH_MAX_NOISE_PEN_UP - TOUCH_MAX_NOISE_PEN_UP_IIR_RATIO)
+
+typedef struct {
+    u16 value;      // 1..4095, 0 if invalid
+    u16 noisiness;  // 0..4095, ~15-16 = 1 pixel
+} libnds_touchMeasurementFilterResult;
+
+/**
+ * @brief Perform filtering on the raw touch samples provided to return one
+ * averaged sample and an estimate of how noisy it is, while skipping outliers.
+ *
+ * Internal. See touchFilter.c for more information.
+ */
+extern "C" libnds_touchMeasurementFilterResult libnds_touchMeasurementFilter(u16 values[5]);
+
+void touch_init()
+{
+    touchInit();
+}
+
+bool touch_update(touchPosition& touchPos)
+{
+#if PEN_DOWN_DEBOUNCE > 0
+    static touchPosition lastTouchPosition;
+    static bool lastPenDown = false;
+    static u8 penDownDebounce = 0;
+#else
+    touchPosition lastTouchPosition;
+    bool lastPenDown = false;
+#endif
+
+    bool penDown = touchPenDown();
+    if (penDown)
+    {
+        // Set penDown to false for later fallthroughs to noPenDown.
+        // It will be set to true if all the touch filtering ensures the readout is valid.
+        penDown = false;
+
+        // Measure new touch position.
+        touchRawArray data;
+        if (!touchReadData(&data))
+            goto noPenDown;
+
+        libnds_touchMeasurementFilterResult rawXresult = libnds_touchMeasurementFilter(data.rawX);
+        if (!rawXresult.value)
+            goto noPenDown;
+        libnds_touchMeasurementFilterResult rawYresult = libnds_touchMeasurementFilter(data.rawY);
+        if (!rawYresult.value)
+            goto noPenDown;
+
+        // Valid sample read.
+        u16 noisiness = rawXresult.noisiness > rawYresult.noisiness ? rawXresult.noisiness : rawYresult.noisiness;
+        if (noisiness <= (lastPenDown ? TOUCH_MAX_NOISE_PEN_UP : TOUCH_MAX_NOISE_PEN_DOWN))
+        {
+            lastTouchPosition.z1 = libnds_touchMeasurementFilter(data.z1).value;
+            lastTouchPosition.z2 = libnds_touchMeasurementFilter(data.z2).value;
+
+#if TOUCH_MAX_NOISE_PEN_UP_IIR_SHIFT > 0
+            // Apply an IIR filter on noisy X/Y samples.
+            // Skip the IIR filter if the pen was just pressed.
+            int n = (noisiness - TOUCH_MAX_NOISE_PEN_UP_IIR_MIN);
+            if (noisiness <= 0 || !lastPenDown)
+            {
+                lastTouchPosition.rawx = rawXresult.value;
+                lastTouchPosition.rawy = rawYresult.value;
+            }
+            else if (noisiness <= TOUCH_MAX_NOISE_PEN_UP_IIR_RATIO)
+            {
+                lastTouchPosition.rawx =
+                    ((rawXresult.value * (TOUCH_MAX_NOISE_PEN_UP_IIR_RATIO - n))
+                     + (lastTouchPosition.rawx * n)) >> TOUCH_MAX_NOISE_PEN_UP_IIR_SHIFT;
+                lastTouchPosition.rawy =
+                    ((rawYresult.value * (TOUCH_MAX_NOISE_PEN_UP_IIR_RATIO - n))
+                     + (lastTouchPosition.rawy * n)) >> TOUCH_MAX_NOISE_PEN_UP_IIR_SHIFT;
+            }
+#else
+            lastTouchPosition.rawx = rawXresult.value;
+            lastTouchPosition.rawy = rawYresult.value;
+#endif
+
+            touchApplyCalibration(lastTouchPosition.rawx, lastTouchPosition.rawy, &lastTouchPosition.px, &lastTouchPosition.py);
+            penDown = true;
+        }
+
+#ifdef TOUCH_DEBUG_NOISINESS
+        lastTouchPosition.z1 = rawXresult.noisiness;
+        lastTouchPosition.z2 = rawYresult.noisiness;
+#endif
+    }
+
+noPenDown:
+#if PEN_DOWN_DEBOUNCE > 0
+    // Perform simple debouncing.
+    // Hold new presses for PEN_DOWN_DEBOUNCE frames.
+    if (!penDownDebounce)
+    {
+        if (lastPenDown != penDown)
+        {
+            lastPenDown = penDown;
+            if (penDown)
+                penDownDebounce = PEN_DOWN_DEBOUNCE;
+        }
+    }
+    else
+    {
+        penDownDebounce--;
+    }
+#else
+    lastPenDown = penDown;
+#endif
+
+    // Return the touch position and pen down.
+    if (lastPenDown)
+    {
+        touchPos = lastTouchPosition;
+    }
+
+    return lastPenDown;
+}

arm7/source/touchScreen.h

@@ -0,0 +1,5 @@
+#pragma once
+#include <nds/touch.h>
+
+void touch_init();
+bool touch_update(touchPosition& touchPos);

arm9/gfx/cheatSelector.grit

@@ -0,0 +1,7 @@
+# tile format
+-gt
+
+# graphics bit depth is 4 (16 color)
+-gB4
+
+-p!

arm9/gfx/checkboxChecked.grit

@@ -0,0 +1,7 @@
+# tile format
+-gt
+
+# graphics bit depth is 4 (16 color)
+-gB4
+
+-p!

arm9/gfx/checkboxUnchecked.grit

@@ -0,0 +1,7 @@
+# tile format
+-gt
+
+# graphics bit depth is 4 (16 color)
+-gB4
+
+-p!

arm9/gfx/folderIcon.grit

@@ -0,0 +1,7 @@
+# tile format
+-gt
+
+# graphics bit depth is 4 (16 color)
+-gB4
+
+-p!

arm9/gfx/upIcon.grit

@@ -0,0 +1,7 @@
+# tile format
+-gt
+
+# graphics bit depth is 4 (16 color)
+-gB4
+
+-p!

arm9/source/App.cpp

@@ -20,6 +20,7 @@
 #include "romBrowser/DisplayMode/RomBrowserDisplayModeFactory.h"
 #include "romBrowser/Theme/Material/MaterialThemeFileIconFactory.h"
 #include "romBrowser/views/NdsGameDetailsBottomSheetView.h"
+#include "romBrowser/views/cheats/CheatsBottomSheetView.h"
 #include "romBrowser/views/DisplaySettingsBottomSheetView.h"
 #include "bgm/AudioStreamPlayer.h"
 #include "bgm/BgmService.h"
@@ -42,9 +43,9 @@ App::App(IAppSettingsService& appSettingsService, IBgmService& bgmService)
     , _subVramContext(nullptr, &_subObjVram, nullptr, nullptr)
     , _appSettingsService(appSettingsService)
     , _bgmService(bgmService)
-    , _inputProvider(&_inputSource)
+    , _inputProvider(&_keyInputSource, &_touchInputSource)
     , _inputRepeater(&_inputProvider,
-        InputKey::DpadLeft | InputKey::DpadRight | InputKey::DpadUp | InputKey::DpadDown,
+        InputKey::DpadLeft | InputKey::DpadRight | InputKey::DpadUp | InputKey::DpadDown | InputKey::L | InputKey::R,
         25, 8)
     , _romBrowserController(&appSettingsService, &_ioTaskQueue, &_bgTaskQueue)
     , _displaySettingsBottomSheetViewModel(&_romBrowserController)
@@ -133,7 +134,7 @@ void App::Run()
 
     StoreVramState(_vramStateBeforeMakeBottomScreenView);
 
-    _romBrowserBottomScreenView = std::make_unique<RomBrowserBottomScreenView>(
+    _romBrowserBottomScreenView = RomBrowserBottomScreenView::CreateShared(
         &_romBrowserBottomScreenViewModel,
         RomBrowserDisplayModeFactory().GetRomBrowserDisplayMode(
             _romBrowserController.GetRomBrowserDisplaySettings().layout),
@@ -295,10 +296,15 @@ void App::HandleTrigger(RomBrowserStateTrigger trigger, RomBrowserState newState
 
 void App::HandleShowGameInfoTrigger()
 {
-    auto gameInfoDialog = std::make_unique<NdsGameDetailsBottomSheetView>(
-        &_romBrowserController, &_theme->GetMaterialColorScheme(), _theme->GetFontRepository());
-    gameInfoDialog->SetGraphics(_chipViewVram);
-    _dialogPresenter.ShowDialog(std::move(gameInfoDialog));
+    // auto gameInfoDialog = std::make_unique<NdsGameDetailsBottomSheetView>(
+    //     &_romBrowserController, &_theme->GetMaterialColorScheme(), _theme->GetFontRepository());
+    // gameInfoDialog->SetGraphics(_chipViewVram);
+    // _dialogPresenter.ShowDialog(std::move(gameInfoDialog));
+
+    auto cheatsViewModel = SharedPtr<CheatsViewModel>::MakeShared(_romBrowserController.GetTriggerFileInfo(), &_romBrowserController);
+    auto cheatsDialog = CheatsBottomSheetView::CreateShared(
+        std::move(cheatsViewModel), &_theme->GetMaterialColorScheme(), _theme->GetFontRepository(), &_focusManager);
+    _dialogPresenter.ShowDialog(std::move(cheatsDialog));
 }
 
 void App::HandleHideGameInfoTrigger()
@@ -310,7 +316,7 @@ void App::HandleHideGameInfoTrigger()
 
 void App::HandleShowDisplaySettingsTrigger()
 {
-    auto displaySettingsDialog = std::make_unique<DisplaySettingsBottomSheetView>(
+    auto displaySettingsDialog = DisplaySettingsBottomSheetView::CreateShared(
         &_displaySettingsBottomSheetViewModel, &_theme->GetMaterialColorScheme(), _theme->GetFontRepository());
     displaySettingsDialog->SetGraphics(_iconButtonViewVram);
     _dialogPresenter.ShowDialog(std::move(displaySettingsDialog));
@@ -331,11 +337,11 @@ void App::HandleNavigateTrigger()
 
 void App::HandleFolderLoadDoneTrigger()
 {
-    _romBrowserTopScreenView.reset();
+    _romBrowserTopScreenView.Reset();
     RestoreVramState(_vramStateAfterMakeBottomScreenView);
     auto displayMode = RomBrowserDisplayModeFactory().GetRomBrowserDisplayMode(
         _romBrowserController.GetRomBrowserDisplaySettings().layout);
-    _romBrowserTopScreenView = std::make_unique<RomBrowserTopScreenView>(
+    _romBrowserTopScreenView = RomBrowserTopScreenView::CreateShared(
         _romBrowserController.GetRomBrowserViewModel(),
         displayMode,
         _materialThemeFileIconFactory.get(),
@@ -352,7 +358,7 @@ void App::HandleChangeDisplayModeTrigger(RomBrowserState newState)
     RestoreVramState(_vramStateBeforeMakeBottomScreenView);
     auto displayMode = RomBrowserDisplayModeFactory().GetRomBrowserDisplayMode(
         _romBrowserController.GetRomBrowserDisplaySettings().layout);
-    _romBrowserBottomScreenView = std::make_unique<RomBrowserBottomScreenView>(
+    _romBrowserBottomScreenView = RomBrowserBottomScreenView::CreateShared(
         &_romBrowserBottomScreenViewModel,
         displayMode,
         _materialThemeFileIconFactory.get(),
@@ -360,7 +366,7 @@ void App::HandleChangeDisplayModeTrigger(RomBrowserState newState)
         &_vblankTextureLoader);
     _romBrowserBottomScreenView->InitVram(_mainVramContext);
     StoreVramState(_vramStateAfterMakeBottomScreenView);
-    _romBrowserTopScreenView = std::make_unique<RomBrowserTopScreenView>(
+    _romBrowserTopScreenView = RomBrowserTopScreenView::CreateShared(
         _romBrowserController.GetRomBrowserViewModel(),
         displayMode,
         _materialThemeFileIconFactory.get(),
@@ -399,7 +405,7 @@ void App::Update()
     bool isRomBrowserVisible = IsRomBrowserVisible();
     if (isRomBrowserVisible && !_exit && curState != RomBrowserState::Launching)
     {
-        _focusManager.Update(_inputRepeater);
+        HandleInput();
     }
 
     if (_topBackground)
@@ -517,3 +523,49 @@ void App::RestoreVramState(const VramState& vramState)
     _texturePaletteVram.SetState(vramState._texPlttVramState);
     _subObjVram.SetState(vramState._subObjVramState);
 }
+
+void App::HandleInput()
+{
+    _focusManager.Update(_inputRepeater);
+    Point touchPoint;
+    if (_inputRepeater.Triggered(InputKey::Touch) &&
+        _inputRepeater.GetCurrentTouchPoint(touchPoint))
+    {
+        // pen down
+        if (_dialogPresenter.IsBottomSheetVisible())
+        {
+            _dialogPresenter.HandlePenDown(touchPoint, _focusManager);
+        }
+        else
+        {
+            _romBrowserBottomScreenView->HandlePenDown(touchPoint, _focusManager);
+        }
+        _lastTouchPoint = touchPoint;
+    }
+    else if (_inputRepeater.Released(InputKey::Touch))
+    {
+        // pen up
+        if (_dialogPresenter.IsBottomSheetVisible())
+        {
+            _dialogPresenter.HandlePenUp(_lastTouchPoint, _focusManager);
+        }
+        else
+        {
+            _romBrowserBottomScreenView->HandlePenUp(_lastTouchPoint, _focusManager);
+        }
+    }
+    else if (_inputRepeater.Current(InputKey::Touch)
+        && _inputRepeater.GetCurrentTouchPoint(touchPoint))
+    {
+        // pen move
+        if (_dialogPresenter.IsBottomSheetVisible())
+        {
+            _dialogPresenter.HandlePenMove(touchPoint, _focusManager);
+        }
+        else
+        {
+            _romBrowserBottomScreenView->HandlePenMove(touchPoint, _focusManager);
+        }
+        _lastTouchPoint = touchPoint;
+    }
+}

arm9/source/App.h

@@ -12,6 +12,7 @@
 #include "gui/DescendingStackVramManager.h"
 #include "material/scheme/scheme.h"
 #include "gui/input/PadInputSource.h"
+#include "gui/input/TouchInputSource.h"
 #include "gui/input/SampledInputProvider.h"
 #include "gui/input/InputRepeater.h"
 #include "gui/VBlankTextureLoader.h"
@@ -28,7 +29,6 @@
 #include "romBrowser/RomBrowserController.h"
 #include "DialogPresenter.h"
 #include "themes/ITheme.h"
-#include "core/SharedPtr.h"
 #include "animation/Animator.h"
 
 class alignas(32) App : public IProcess
@@ -63,9 +63,9 @@ private:
     Rgb6Palette _rgb6Palette;
     Animator<int> _fadeAnimator;
 
-    TaskQueue<32, 32> _ioTaskQueue;
+    TaskQueue<32, sizeof(TaskBase) + 32> _ioTaskQueue;
     u32 _ioTaskThreadStack[2048 / 4];
-    TaskQueue<32, 32> _bgTaskQueue;
+    TaskQueue<32, sizeof(TaskBase) + 32> _bgTaskQueue;
     u32 _bgTaskThreadStack[2048 / 4];
 
     std::unique_ptr<ITheme> _theme;
@@ -76,12 +76,13 @@ private:
     IBgmService& _bgmService;
     volatile bool _exit = false;
 
-    PadInputSource _inputSource;
+    PadInputSource _keyInputSource;
+    TouchInputSource _touchInputSource;
     SampledInputProvider _inputProvider;
     InputRepeater _inputRepeater;
 
-    std::unique_ptr<RomBrowserBottomScreenView> _romBrowserBottomScreenView;
-    std::unique_ptr<RomBrowserTopScreenView> _romBrowserTopScreenView;
+    SharedPtr<RomBrowserBottomScreenView> _romBrowserBottomScreenView;
+    SharedPtr<RomBrowserTopScreenView> _romBrowserTopScreenView;
 
     RomBrowserController _romBrowserController;
 
@@ -104,10 +105,13 @@ private:
 
     bool _vcountIrqStarted = false;
 
+    Point _lastTouchPoint = Point(0, 0);
+
     void InitVramMapping() const;
     void DisplaySplashScreen() const;
     void LoadTheme();
     void VCountIrq();
+    void HandleInput();
     void HandleTrigger(RomBrowserStateTrigger trigger, RomBrowserState newState);
     void HandleShowGameInfoTrigger();
     void HandleHideGameInfoTrigger();

arm9/source/DialogPresenter.cpp

@@ -16,10 +16,12 @@ DialogPresenter::DialogPresenter(FocusManager* focusManager, StackVramManager* v
     _baseVramState = _vramManager->GetState();
 }
 
-void DialogPresenter::ShowDialog(std::unique_ptr<DialogView> dialog)
+void DialogPresenter::ShowDialog(SharedPtr<DialogView> dialog)
 {
     if (!_nextDialog)
+    {
         _nextDialog = std::move(dialog);
+    }
 }
 
 void DialogPresenter::CloseDialog()
@@ -93,7 +95,7 @@ void DialogPresenter::Update()
             else
             {
                 _newState = State::Idle;
-                _currentDialog.reset();
+                _currentDialog.Reset();
             }
             break;
         }
@@ -153,3 +155,27 @@ void DialogPresenter::InitVram()
     REG_BLDCNT = 0x3944;
     REG_BLDALPHA = (16 << 8) | 0;
 }
+
+void DialogPresenter::HandlePenDown(const Point& touchPoint, FocusManager& focusManager)
+{
+    if (_curState == State::BottomSheetVisible && _currentDialog)
+    {
+        _currentDialog->HandlePenDown(touchPoint, focusManager);
+    }
+}
+
+void DialogPresenter::HandlePenMove(const Point& touchPoint, FocusManager& focusManager)
+{
+    if (_curState == State::BottomSheetVisible && _currentDialog)
+    {
+        _currentDialog->HandlePenMove(touchPoint, focusManager);
+    }
+}
+
+void DialogPresenter::HandlePenUp(const Point& lastTouchPoint, FocusManager& focusManager)
+{
+    if (_curState == State::BottomSheetVisible && _currentDialog)
+    {
+        _currentDialog->HandlePenUp(lastTouchPoint, focusManager);
+    }
+}

arm9/source/DialogPresenter.h

@@ -1,5 +1,6 @@
 #pragma once
 #include <memory>
+#include "core/SharedPtr.h"
 #include "animation/Animator.h"
 #include "gui/views/DialogView.h"
 
@@ -14,7 +15,7 @@ public:
 
     /// @brief Requests to show the given dialog.
     /// @param dialog The dialog to show.
-    void ShowDialog(std::unique_ptr<DialogView> dialog);
+    void ShowDialog(SharedPtr<DialogView> dialog);
 
     /// @brief Closes the current dialog.
     void CloseDialog();
@@ -41,6 +42,21 @@ public:
     /// @brief Initializes vram that is needed for showing dialogs.
     void InitVram();
 
+    /// @brief Handles a pen down event.
+    /// @param touchPoint The touch point.
+    /// @param focusManager The focus manager.
+    void HandlePenDown(const Point& touchPoint, FocusManager& focusManager);
+
+    /// @brief Handles a pen move event.
+    /// @param touchPoint The touch point.
+    /// @param focusManager The focus manager.
+    void HandlePenMove(const Point& touchPoint, FocusManager& focusManager);
+
+    /// @brief Handles a pen up event.
+    /// @param lastTouchPoint The last touch point.
+    /// @param focusManager The focus manager.
+    void HandlePenUp(const Point& lastTouchPoint, FocusManager& focusManager);
+
     /// @brief Clears the focus that was stored when a dialog was opened.
     void ClearOldFocus()
     {
@@ -49,11 +65,16 @@ public:
 
     /// @brief Gets the focus that was stored when a dialog was opened.
     /// @return The view that was focused when the current dialog was opened.
-    constexpr View* GetOldFocus() const
+    constexpr SharedPtr<View> GetOldFocus() const
     {
         return _oldFocus;
     }
 
+    bool IsBottomSheetVisible() const
+    {
+        return _curState != State::Idle;
+    }
+
 private:
     enum class State
     {
@@ -65,10 +86,10 @@ private:
     FocusManager* _focusManager;
     StackVramManager* _vramManager;
     u32 _baseVramState;
-    std::unique_ptr<DialogView> _currentDialog;
-    std::unique_ptr<DialogView> _nextDialog;
+    SharedPtr<DialogView> _currentDialog;
+    SharedPtr<DialogView> _nextDialog;
     bool _initVram = false;
-    View* _oldFocus = nullptr;
+    SharedPtr<View> _oldFocus = nullptr;
     Animator<int> _scrimAnimator;
     Animator<int> _yAnimator;
     State _curState = State::Idle;

arm9/source/cheats/CheatEntry.h

@@ -0,0 +1,190 @@
+#pragma once
+
+/// @brief Class representing a cheat or a cheat category.
+class CheatEntry
+{
+public:
+    /// @brief Dummy empty constructor.
+    CheatEntry()
+        : _isCheatCategory(false), _flagsPointer(nullptr), _cheatData(nullptr), _cheatDataLength(0) { }
+
+    /// @brief Constructor for a cheat.
+    CheatEntry(const char* name, const char* description, u32* flagsPointer, const void* cheatData, u32 cheatDataLength)
+        : _name(name), _description(description), _isCheatCategory(false), _flagsPointer(flagsPointer)
+        , _cheatData(cheatData), _cheatDataLength(cheatDataLength) { }
+
+    /// @brief Constructor for a category.
+    CheatEntry(const char* name, const char* description, bool isMaxOneCheatActive, CheatEntry* subEntries, u32 numberOfSubEntries)
+        : _name(name), _description(description), _isCheatCategory(true), _isMaxOneCheatActive(isMaxOneCheatActive)
+        , _subEntries(subEntries), _numberOfSubEntries(numberOfSubEntries) { }
+
+    CheatEntry(const CheatEntry& other) = delete;
+
+    CheatEntry(CheatEntry&& other)
+        : _isCheatCategory(false), _flagsPointer(nullptr), _cheatData(nullptr), _cheatDataLength(0)
+    {
+        *this = std::move(other);
+    }
+
+    ~CheatEntry()
+    {
+        if (_isCheatCategory && _subEntries != nullptr)
+        {
+            delete[] _subEntries;
+        }
+    }
+
+    CheatEntry& operator=(const CheatEntry& other) = delete;
+
+    CheatEntry& operator=(CheatEntry&& other)
+    {
+        if (_isCheatCategory && _subEntries != nullptr)
+        {
+            delete[] _subEntries;
+            _subEntries = nullptr;
+        }
+
+        _name = other._name;
+        other._name = nullptr;
+        _description = other._description;
+        other._description = nullptr;
+        _isCheatCategory = other.IsCheatCategory();
+        if (_isCheatCategory)
+        {
+            _isMaxOneCheatActive = other._isMaxOneCheatActive;
+            _subEntries = other._subEntries;
+            other._subEntries = nullptr;
+            _numberOfSubEntries = other._numberOfSubEntries;
+            other._numberOfSubEntries = 0;
+        }
+        else
+        {
+            _flagsPointer = other._flagsPointer;
+            other._flagsPointer = nullptr;
+            _cheatData = other._cheatData;
+            other._cheatData = nullptr;
+            _cheatDataLength = other._cheatDataLength;
+            other._cheatDataLength = 0;
+        }
+
+        return *this;
+    }
+
+    /// @brief Gets the name of this cheat entry.
+    /// @return A pointer to the name of this cheat entry.
+    const char* GetName() const
+    {
+        return _name;
+    }
+
+    /// @brief Gets the description of this cheat entry.
+    /// @return A pointer to the description of this cheat entry.
+    const char* GetDescription() const
+    {
+        return _description;
+    }
+
+    /// @brief When this entry is a cheat, gets a pointer to the cheat data.
+    /// @param cheatDataLength The length of the cheat data is returned in this reference.
+    /// @return A pointer to the cheat data.
+    ///         This pointer is only valid for the lifetime of the \see GameCheats instance this cheat belongs to.
+    ///         If this entry is not a cheat, \c nullptr is returned.
+    const void* GetCheatData(u32& cheatDataLength) const
+    {
+        if (_isCheatCategory)
+        {
+            cheatDataLength = 0;
+            return nullptr;
+        }
+        else
+        {
+            cheatDataLength = _cheatDataLength;
+            return _cheatData;
+        }
+    }
+
+    /// @brief Gets whether this entry is an active (enabled) cheat or not.
+    /// @return \c true when this entry is an active cheat, or \c false otherwise.
+    bool GetIsCheatActive() const
+    {
+        if (_isCheatCategory)
+        {
+            return false;
+        }
+        else
+        {
+            return ((*_flagsPointer >> 24) & 1) == 1;
+        }
+    }
+
+    /// @brief If this entry is a cheat, sets whether this cheat is active (enabled) or not.
+    /// @param isCheatActive \c true to enable this cheat, or \c false to disable this cheat.
+    void SetIsCheatActive(bool isCheatActive) const
+    {
+        if (!_isCheatCategory)
+        {
+            u32 flags = *_flagsPointer;
+            flags &= ~(1 << 24);
+            if (isCheatActive)
+            {
+                flags |= 1 << 24;
+            }
+            *_flagsPointer = flags;
+        }
+    }
+
+    /// @brief Indicates if this entry is a cheat category or not.
+    /// @return \c true when this entry is a cheat category, or \c false when this entry is a cheat.
+    bool IsCheatCategory() const
+    {
+        return _isCheatCategory;
+    }
+
+    /// @brief Indicates if this entry is a cheat category in which only one cheat is allowed to be on at a time or not.
+    /// @return \c true when this entry is a cheat category in which only one cheat is allowed
+    ///         to be active at a time, or \c false otherwise.
+    bool GetIsMaxOneCheatActive() const
+    {
+        return _isCheatCategory && _isMaxOneCheatActive;
+    }
+
+    /// @brief Gets the sub-entries of this entry.
+    /// @param numberOfSubEntries The number of sub-entries is returned through this reference.
+    /// @return A pointer to an array of entries. This may be \c nullptr when \p numberOfSubEntries is 0.
+    const CheatEntry* GetSubEntries(u32& numberOfSubEntries) const
+    {
+        if (_isCheatCategory)
+        {
+            numberOfSubEntries = _numberOfSubEntries;
+            return _subEntries;
+        }
+        else
+        {
+            numberOfSubEntries = 0;
+            return nullptr;
+        }
+    }
+
+private:
+    const char* _name = nullptr;
+    const char* _description = nullptr;
+    bool _isCheatCategory;
+
+    union
+    {
+        struct
+        {
+            // For cheat
+            u32* _flagsPointer;
+            const void* _cheatData;
+            u32 _cheatDataLength;
+        };
+        struct
+        {
+            // For category
+            bool _isMaxOneCheatActive;
+            CheatEntry* _subEntries;
+            u32 _numberOfSubEntries;
+        };
+    };
+};

arm9/source/cheats/EmptyCheatRepository.h

@@ -0,0 +1,17 @@
+#pragma once
+#include "ICheatRepository.h"
+
+/// @brief Class implementing an empty cheat repository.
+class EmptyCheatRepository : public ICheatRepository
+{
+public:
+    std::unique_ptr<GameCheats> GetCheatsForGame(const FastFileRef& romFile) const override
+    {
+        return nullptr;
+    }
+
+    void UpdateEnabledCheatsForGame(const std::unique_ptr<GameCheats>& cheats) const override
+    {
+        // Do nothing
+    }
+};

arm9/source/cheats/GameCheats.h

@@ -0,0 +1,32 @@
+#pragma once
+#include "CheatEntry.h"
+
+/// @brief Class holding the cheats for a game.
+class GameCheats : public CheatEntry
+{
+public:
+    GameCheats(std::unique_ptr<u8[]> cheatData, u32 cheatDataLength, u32 fileOffset, const char* gameName,
+        CheatEntry* subEntries, u32 numberOfSubEntries)
+        : CheatEntry(gameName, "", false, subEntries, numberOfSubEntries)
+        , _cheatData(std::move(cheatData)), _cheatDataLength(cheatDataLength)
+        , _fileOffset(fileOffset) { }
+
+    /// @brief Gets a pointer to the cheat data.
+    /// @param cheatDataLength The length of the cheat data is returned in this reference.
+    /// @return A pointer to the cheat data. This pointer is only valid for the lifetime of this \see GameCheats instance.
+    u8* GetCheatData(u32& cheatDataLength) const
+    {
+        cheatDataLength = _cheatDataLength;
+        return _cheatData.get();
+    }
+
+    u32 GetFileOffset() const
+    {
+        return _fileOffset;
+    }
+
+private:
+    std::unique_ptr<u8[]> _cheatData;
+    u32 _cheatDataLength;
+    u32 _fileOffset;
+};

arm9/source/cheats/ICheatRepository.h

@@ -0,0 +1,22 @@
+#pragma once
+#include "GameCheats.h"
+#include "fat/FastFileRef.h"
+
+/// @brief Interface for a repository providing access to cheats.
+class ICheatRepository
+{
+public:
+    virtual ~ICheatRepository() { }
+
+    /// @brief Gets the available cheats for the given \p romFile.
+    /// @param romFile Reference to the rom file.
+    /// @return A unique pointer to the found cheats, or an empty unique pointer when no cheats were found.
+    virtual std::unique_ptr<GameCheats> GetCheatsForGame(const FastFileRef& romFile) const = 0;
+
+    /// @brief Writes the enable/disabled status of the given \p cheats.
+    /// @param cheats The cheats to update.
+    virtual void UpdateEnabledCheatsForGame(const std::unique_ptr<GameCheats>& cheats) const = 0;
+
+protected:
+    ICheatRepository() { }
+};

arm9/source/cheats/PicoLoaderCheatDataFactory.cpp

@@ -0,0 +1,80 @@
+#include "common.h"
+#include <string.h>
+#include "PicoLoaderCheatDataFactory.h"
+
+pload_cheats_t* PicoLoaderCheatDataFactory::CreateCheatData(const std::unique_ptr<GameCheats>& gameCheats) const
+{
+    pload_cheats_t* cheatData = nullptr;
+    if (gameCheats)
+    {
+        u32 totalNumberOfCheats = 0;
+        u32 requiredSize = GetCheatEntryRequiredSize(gameCheats.get(), totalNumberOfCheats);
+        if (totalNumberOfCheats != 0)
+        {
+            requiredSize += sizeof(u32) * 2;
+            cheatData = (pload_cheats_t*)new u8[requiredSize];
+            cheatData->length = requiredSize;
+            cheatData->numberOfCheats = totalNumberOfCheats;
+            u8* buffer = (u8*)&cheatData->firstCheat;
+            GetCheatEntryData(gameCheats.get(), buffer);
+        }
+    }
+
+    return cheatData;
+}
+
+u32 PicoLoaderCheatDataFactory::GetCheatEntryRequiredSize(const CheatEntry* cheatEntry, u32& totalNumberOfCheats) const
+{
+    u32 requiredSize = 0;
+    if (cheatEntry->IsCheatCategory())
+    {
+        u32 numberOfSubEntries = 0;
+        auto subEntries = cheatEntry->GetSubEntries(numberOfSubEntries);
+        for (u32 i = 0; i < numberOfSubEntries; i++)
+        {
+            requiredSize += GetCheatEntryRequiredSize(&subEntries[i], totalNumberOfCheats);
+        }
+    }
+    else
+    {
+        if (cheatEntry->GetIsCheatActive())
+        {
+            u32 cheatDataLength = 0;
+            cheatEntry->GetCheatData(cheatDataLength);
+            requiredSize += sizeof(u32) + ((cheatDataLength + 7) & ~7);
+            totalNumberOfCheats++;
+        }
+    }
+
+    return requiredSize;
+}
+
+void PicoLoaderCheatDataFactory::GetCheatEntryData(const CheatEntry* cheatEntry, u8*& buffer) const
+{
+    if (cheatEntry->IsCheatCategory())
+    {
+        u32 numberOfSubEntries = 0;
+        auto subEntries = cheatEntry->GetSubEntries(numberOfSubEntries);
+        for (u32 i = 0; i < numberOfSubEntries; i++)
+        {
+            GetCheatEntryData(&subEntries[i], buffer);
+        }
+    }
+    else
+    {
+        if (cheatEntry->GetIsCheatActive())
+        {
+            u32 cheatDataLength = 0;
+            auto cheatData = cheatEntry->GetCheatData(cheatDataLength);
+            u32 paddedCheatDataLength = (cheatDataLength + 7) & ~7;
+            *(u32*)buffer = paddedCheatDataLength;
+            buffer += sizeof(u32);
+            memcpy(buffer, cheatData, cheatDataLength);
+            if (cheatDataLength != paddedCheatDataLength)
+            {
+                memset(buffer + cheatDataLength, 0, paddedCheatDataLength - cheatDataLength);
+            }
+            buffer += paddedCheatDataLength;
+        }
+    }
+}

arm9/source/cheats/PicoLoaderCheatDataFactory.h

@@ -0,0 +1,18 @@
+#pragma once
+#include <memory>
+#include "GameCheats.h"
+#include "picoLoader7.h"
+
+/// @brief Factory for creating Pico Loader compatible cheat data.
+class PicoLoaderCheatDataFactory
+{
+public:
+    /// @brief Converts the given \p gameCheats to Pico Loader format. Only the enabled cheats will be included.
+    /// @param gameCheats The cheats to convert.
+    /// @return Pointer to the created cheat data.
+    pload_cheats_t* CreateCheatData(const std::unique_ptr<GameCheats>& gameCheats) const;
+
+private:
+    u32 GetCheatEntryRequiredSize(const CheatEntry* cheatEntry, u32& totalNumberOfCheats) const;
+    void GetCheatEntryData(const CheatEntry* cheatEntry, u8*& buffer) const;
+};

arm9/source/cheats/UsrCheatDat.h

@@ -0,0 +1,12 @@
+#pragma once
+
+/// @brief Struct representing an index entry of usrcheat.dat.
+struct usr_cheat_index_entry_t
+{
+    u32 gameCode;
+    u32 headerCrc32;
+    u32 offset;
+    u32 padding;
+};
+
+static_assert(sizeof(usr_cheat_index_entry_t) == 16);

arm9/source/cheats/UsrCheatRepository.cpp

@@ -0,0 +1,225 @@
+#include "common.h"
+#include <algorithm>
+#include <string.h>
+#include "UsrCheatRepository.h"
+
+#define CRCPOLY 0xEDB88320
+
+static u32 crc32(const void* buffer, u32 length)
+{
+    u32 crc = ~0u;
+    const u8* p = (u8*)buffer;
+    while (length--)
+    {
+        crc ^= *p++;
+        for (int i = 0; i < 8; i++)
+        {
+            crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY : 0);
+        }
+    }
+
+    return crc;
+}
+
+std::unique_ptr<GameCheats> UsrCheatRepository::GetCheatsForGame(const FastFileRef& romFile) const
+{
+    auto file = std::make_unique<File>();
+    file->Open(romFile, FA_READ);
+    auto headerBuffer = std::make_unique_for_overwrite<u8[]>(512);
+    if (!file->ReadExact(headerBuffer.get(), 512))
+    {
+        LOG_ERROR("Could not read rom header\n");
+        return nullptr;
+    }
+    file->Close();
+
+    u32 gameCode = *(u32*)(headerBuffer.get() + 0xC);
+    u32 crc = crc32(headerBuffer.get(), 512);
+
+    headerBuffer.reset();
+
+    return GetCheatsForGame(gameCode, crc);
+}
+
+void UsrCheatRepository::UpdateEnabledCheatsForGame(const std::unique_ptr<GameCheats>& cheats) const
+{
+    u32 cheatDataLength = 0;
+    auto cheatData = cheats->GetCheatData(cheatDataLength);
+    if (_usrCheatFile->Seek(cheats->GetFileOffset()) != FR_OK)
+    {
+        LOG_ERROR("Failed to seek to cheat data\n");
+        return;
+    }
+
+    u32 bytesWritten = 0;
+    if (_usrCheatFile->Write(cheatData, cheatDataLength, bytesWritten) != FR_OK ||
+        bytesWritten != cheatDataLength)
+    {
+        LOG_ERROR("Failed to write cheat data\n");
+        return;
+    }
+
+    if (_usrCheatFile->Sync() != FR_OK)
+    {
+        LOG_ERROR("Failed to flush cheat data\n");
+    }
+}
+
+std::unique_ptr<GameCheats> UsrCheatRepository::GetCheatsForGame(u32 gameCode, u32 headerCrc32) const
+{
+    auto index = FindIndex(gameCode, headerCrc32);
+    if (index == nullptr)
+    {
+        LOG_DEBUG("Cheats not found for %c%c%c%c - 0x%X\n",
+            gameCode & 0xFF, (gameCode >> 8) & 0xFF, (gameCode >> 16) & 0xFF, gameCode >> 24,
+            headerCrc32);
+        return nullptr;
+    }
+
+    const u32 cheatDataLength = index->padding; // padding was set to the size in UsrCheatRepositoryFactory
+    auto cheatData = std::make_unique_for_overwrite<u8[]>(cheatDataLength);
+    if (_usrCheatFile->Seek(index->offset) != FR_OK)
+    {
+        LOG_ERROR("Failed to seek to cheat data\n");
+        return nullptr;
+    }
+    if (!_usrCheatFile->ReadExact(cheatData.get(), cheatDataLength))
+    {
+        LOG_ERROR("Failed to read cheat data\n");
+        return nullptr;
+    }
+
+    u8* ptr = cheatData.get();
+
+    // game name
+    const char* gameName = (const char*)ptr;
+    ptr += strlen(gameName) + 1;
+
+    // padding
+    ptr = (u8*)(((u32)ptr + 3) & ~3); // 32-bit align
+
+    // flags
+    u32 flags = *(u32*)ptr;
+    u32 totalNumberOfItems = flags & 0x0FFFFFFF;
+    // u32 gameActive = flags >> 28;
+    ptr += 4;
+
+    // master codes
+    ptr += 8 * 4;
+
+    auto entries = new CheatEntry[totalNumberOfItems];
+    u32 entryCount = 0;
+
+    while (ptr < cheatData.get() + cheatDataLength)
+    {
+        u32 itemFlags = *(u32*)ptr;
+        bool isCategory = ((itemFlags >> 28) & 1) == 1;
+        if (isCategory)
+        {
+            entries[entryCount++] = ParseCategory(ptr);
+        }
+        else
+        {
+            entries[entryCount++] = ParseCheat(ptr);
+        }
+    }
+
+    auto actualEntries = new CheatEntry[entryCount];
+    std::move(entries, entries + entryCount, actualEntries);
+    delete[] entries;
+
+    return std::make_unique<GameCheats>(
+        std::move(cheatData), cheatDataLength, index->offset, gameName, actualEntries, entryCount);
+}
+
+const usr_cheat_index_entry_t* UsrCheatRepository::FindIndex(u32 gameCode, u32 headerCrc32) const
+{
+    if (_numberOfIndices != 0)
+    {
+        const auto index = std::lower_bound(_sortedIndices.get(), _sortedIndices.get() + _numberOfIndices, gameCode,
+            [headerCrc32] (const usr_cheat_index_entry_t& entry, u32 value)
+            {
+                if (entry.gameCode != value)
+                {
+                    return entry.gameCode < value;
+                }
+
+                return entry.headerCrc32 < headerCrc32;
+            });
+
+        if (index != _sortedIndices.get() + _numberOfIndices &&
+            index->gameCode == gameCode &&
+            index->headerCrc32 == headerCrc32)
+        {
+            return index;
+        }
+    }
+
+    return nullptr;
+}
+
+CheatEntry UsrCheatRepository::ParseCategory(u8*& ptr) const
+{
+    // flags
+    u32 itemFlags = *(u32*)ptr;
+    ptr += 4;
+    u32 numberOfItems = itemFlags & 0x00FFFFFF;
+    bool isMaxOneCheatActive = ((itemFlags >> 24) & 1) == 1;
+
+    // item name
+    const char* itemName = (const char*)ptr;
+    ptr += strlen(itemName) + 1;
+
+    // item description
+    const char* itemDescription = (const char*)ptr;
+    ptr += strlen(itemDescription) + 1;
+
+    // padding
+    ptr = (u8*)(((u32)ptr + 3) & ~3); // 32-bit align
+
+    auto entries = new CheatEntry[numberOfItems];
+    for (u32 i = 0; i < numberOfItems; i++)
+    {
+        u32 itemFlags = *(u32*)ptr;
+        bool isCategory = ((itemFlags >> 28) & 1) == 1;
+        if (isCategory)
+        {
+            entries[i] = ParseCategory(ptr);
+        }
+        else
+        {
+            entries[i] = ParseCheat(ptr);
+        }
+    }
+
+    return CheatEntry(itemName, itemDescription, isMaxOneCheatActive, entries, numberOfItems);
+}
+
+CheatEntry UsrCheatRepository::ParseCheat(u8*& ptr) const
+{
+    // flags
+    u32* flagsPtr = (u32*)ptr;
+    ptr += 4;
+
+    // item name
+    const char* itemName = (const char*)ptr;
+    ptr += strlen(itemName) + 1;
+
+    // item description
+    const char* itemDescription = (const char*)ptr;
+    ptr += strlen(itemDescription) + 1;
+
+    // padding
+    ptr = (u8*)(((u32)ptr + 3) & ~3); // 32-bit align
+
+    // number of code words
+    u32 numberOfCodeWords = *(u32*)ptr;
+    ptr += 4;
+
+    const void* cheatData = ptr;
+
+    // code
+    ptr += numberOfCodeWords * 4;
+
+    return CheatEntry(itemName, itemDescription, flagsPtr, cheatData, numberOfCodeWords * 4);
+}

arm9/source/cheats/UsrCheatRepository.h

@@ -0,0 +1,28 @@
+#pragma once
+#include <memory>
+#include "fat/File.h"
+#include "ICheatRepository.h"
+#include "UsrCheatDat.h"
+
+/// @brief Class implementing a cheat repository for usrcheat.dat.
+class UsrCheatRepository : public ICheatRepository
+{
+public:
+    UsrCheatRepository(std::unique_ptr<File> usrCheatDatFile,
+        std::unique_ptr<usr_cheat_index_entry_t[]> sortedIndices, u32 numberOfIndices)
+        : _usrCheatFile(std::move(usrCheatDatFile))
+        , _sortedIndices(std::move(sortedIndices)), _numberOfIndices(numberOfIndices) { }
+
+    std::unique_ptr<GameCheats> GetCheatsForGame(const FastFileRef& romFile) const override;
+    void UpdateEnabledCheatsForGame(const std::unique_ptr<GameCheats>& cheats) const override;
+
+private:
+    std::unique_ptr<File> _usrCheatFile;
+    std::unique_ptr<usr_cheat_index_entry_t[]> _sortedIndices;
+    u32 _numberOfIndices;
+
+    std::unique_ptr<GameCheats> GetCheatsForGame(u32 gameCode, u32 headerCrc32) const;
+    const usr_cheat_index_entry_t* FindIndex(u32 gameCode, u32 headerCrc32) const;
+    CheatEntry ParseCategory(u8*& ptr) const;
+    CheatEntry ParseCheat(u8*& ptr) const;
+};

arm9/source/cheats/UsrCheatRepositoryFactory.cpp

@@ -0,0 +1,87 @@
+#include "common.h"
+#include <algorithm>
+#include <string.h>
+#include "fat/File.h"
+#include "UsrCheatDat.h"
+#include "UsrCheatRepositoryFactory.h"
+
+std::unique_ptr<UsrCheatRepository> UsrCheatRepositoryFactory::FromUsrCheatDat(const TCHAR* usrCheatDatPath)
+{
+    auto file = std::make_unique<File>();
+    if (file->Open(usrCheatDatPath, FA_READ | FA_WRITE) != FR_OK)
+    {
+        LOG_ERROR("Failed to open %s\n", usrCheatDatPath);
+        return nullptr;
+    }
+
+    char header[12];
+    if (!file->ReadExact(header, sizeof(header)))
+    {
+        LOG_ERROR("Failed to read usr cheat header\n");
+        return nullptr;
+    }
+
+    if (memcmp(header, "R4 CheatCode", sizeof(header)))
+    {
+        LOG_ERROR("Invalid usr cheat header\n");
+        return nullptr;
+    }
+
+    // Read index
+    if (file->Seek(0x100) != FR_OK)
+    {
+        LOG_ERROR("Failed to seek to usr cheat index\n");
+        return nullptr;
+    }
+
+    usr_cheat_index_entry_t firstEntry;
+    if (!file->ReadExact(&firstEntry, sizeof(firstEntry)))
+    {
+        LOG_ERROR("Failed to read first index\n");
+        return nullptr;
+    }
+
+    u32 numberOfIndices = 0;
+    if (firstEntry.offset != 0)
+    {
+        numberOfIndices = (firstEntry.offset - 0x100 - sizeof(usr_cheat_index_entry_t)) / sizeof(usr_cheat_index_entry_t);
+    }
+
+    if (file->Seek(0x100) != FR_OK)
+    {
+        LOG_ERROR("Failed to seek to usr cheat index\n");
+        return nullptr;
+    }
+
+    auto indices = std::make_unique_for_overwrite<usr_cheat_index_entry_t[]>(numberOfIndices);
+    if (!file->ReadExact(indices.get(), numberOfIndices * sizeof(usr_cheat_index_entry_t)))
+    {
+        LOG_ERROR("Failed to read first index\n");
+        return nullptr;
+    }
+
+    // Set padding field to the size of the cheat data
+    if (numberOfIndices > 0)
+    {
+        for (u32 i = 0; i < numberOfIndices - 1; i++)
+        {
+            indices[i].padding = indices[i + 1].offset - indices[i].offset;
+        }
+
+        indices[numberOfIndices - 1].padding = file->GetSize() - indices[numberOfIndices - 1].offset;
+    }
+
+    // sort by gameCode, then by headerCrc32
+    std::sort(indices.get(), indices.get() + numberOfIndices,
+        [] (const usr_cheat_index_entry_t& a, const usr_cheat_index_entry_t& b)
+        {
+            if (a.gameCode != b.gameCode)
+            {
+                return a.gameCode < b.gameCode;
+            }
+
+            return a.headerCrc32 < b.headerCrc32;
+        });
+
+    return std::make_unique<UsrCheatRepository>(std::move(file), std::move(indices), numberOfIndices);
+}

arm9/source/cheats/UsrCheatRepositoryFactory.h

@@ -0,0 +1,13 @@
+#pragma once
+#include <memory>
+#include "UsrCheatRepository.h"
+
+/// @brief Factory for constructing a \see UsrCheatRepository for a usrcheat.dat file.
+class UsrCheatRepositoryFactory
+{
+public:
+    /// @brief Constructs a \see UsrCheatRepository for the given \p usrCheatDatPath.
+    /// @param usrCheatDatPath The path to the usrcheat.dat file.
+    /// @return A unique pointer to the constructed repository, or an empty unique pointer when construction failed.
+    std::unique_ptr<UsrCheatRepository> FromUsrCheatDat(const TCHAR* usrCheatDatPath);
+};

arm9/source/core/AtomicSharedPtr.cpp

@@ -0,0 +1,35 @@
+#include "common.h"
+#include <libtwl/rtos/rtosIrq.h>
+#include "AtomicSharedPtr.h"
+
+void AtomicSharedPtrBase::Reset(void* newObject, RefCount* newRefCount, bool increaseNewRefCount)
+{
+    u32 irq = rtos_disableIrqs(); // 1
+    auto refCount = _refCount;
+    _object = newObject;
+    _refCount = newRefCount;
+    if (increaseNewRefCount && _refCount)
+    {
+        _refCount->refCount++;
+    }
+    if (refCount && --refCount->refCount == 0) [[gnu::unlikely]]
+    {
+        refCount->weakRefCount++; // ensure the ref count is not destructed elsewhere
+        rtos_restoreIrqs(irq); // 1
+        refCount->DestructObject();
+        irq = rtos_disableIrqs(); // 2
+        if (--refCount->weakRefCount == 0) [[gnu::unlikely]]
+        {
+            rtos_restoreIrqs(irq); // 2
+            delete refCount;
+        }
+        else
+        {
+            rtos_restoreIrqs(irq); // 2
+        }
+    }
+    else
+    {
+        rtos_restoreIrqs(irq); // 1
+    }
+}

arm9/source/core/AtomicSharedPtr.h

@@ -0,0 +1,134 @@
+#pragma once
+#include <type_traits>
+#include <libtwl/rtos/rtosIrq.h>
+#include "SharedPtr.h"
+
+class AtomicSharedPtrBase
+{
+public:
+    void Reset()
+    {
+        Reset(nullptr, nullptr, false);
+    }
+
+protected:
+    void* volatile _object;
+    RefCount* volatile _refCount;
+
+    AtomicSharedPtrBase()
+        : _object(nullptr), _refCount(nullptr) { }
+
+    AtomicSharedPtrBase(void* object, RefCount* refCount)
+        : _object(object), _refCount(refCount) { }
+
+    ~AtomicSharedPtrBase()
+    {
+        Reset(nullptr, nullptr, false);
+    }
+
+    void Reset(void* newObject, RefCount* newRefCount, bool increaseNewRefCount);
+};
+
+template <class T>
+class AtomicSharedPtr : public AtomicSharedPtrBase
+{
+public:
+    AtomicSharedPtr() { }
+
+    AtomicSharedPtr(std::nullptr_t) { }
+
+    AtomicSharedPtr(const SharedPtr<T>& sharedPtr)
+        : AtomicSharedPtrBase(sharedPtr._object, sharedPtr._refCount)
+    {
+        if (_refCount)
+        {
+            shared_ptr_increase_ref_count(_refCount->refCount);
+        }
+    }
+
+    template <class Y> requires std::assignable_from<T*&, Y*>
+    AtomicSharedPtr(const SharedPtr<Y>& sharedPtr)
+        : AtomicSharedPtrBase(static_cast<T*>(sharedPtr.GetPointer()), sharedPtr._refCount)
+    {
+        if (_refCount)
+        {
+            shared_ptr_increase_ref_count(_refCount->refCount);
+        }
+    }
+
+    template <class Y>
+    explicit AtomicSharedPtr(const SharedPtr<Y>& sharedPtr)
+        : AtomicSharedPtrBase(static_cast<T*>(sharedPtr.GetPointer()), sharedPtr._refCount)
+    {
+        if (_refCount)
+        {
+            shared_ptr_increase_ref_count(_refCount->refCount);
+        }
+    }
+
+    AtomicSharedPtr(SharedPtr<T>&& sharedPtr)
+        : AtomicSharedPtrBase(sharedPtr._object, sharedPtr._refCount)
+    {
+        sharedPtr._object = nullptr;
+        sharedPtr._refCount = nullptr;
+    }
+
+    template <class Y> requires std::assignable_from<T*&, Y*>
+    AtomicSharedPtr(SharedPtr<Y>&& sharedPtr)
+        : AtomicSharedPtrBase(static_cast<T*>(sharedPtr.GetPointer()), sharedPtr._refCount)
+    {
+        sharedPtr._object = nullptr;
+        sharedPtr._refCount = nullptr;
+    }
+
+    template <class Y>
+    explicit AtomicSharedPtr(SharedPtr<Y>&& sharedPtr)
+        : AtomicSharedPtrBase(static_cast<T*>(sharedPtr.GetPointer()), sharedPtr._refCount)
+    {
+        sharedPtr._object = nullptr;
+        sharedPtr._refCount = nullptr;
+    }
+
+    AtomicSharedPtr& operator=(const SharedPtr<T>& sharedPtr)
+    {
+        Reset(sharedPtr._object, sharedPtr._refCount, true);
+        return *this;
+    }
+
+    template <class Y> requires std::assignable_from<T*&, Y*>
+    AtomicSharedPtr<T>& operator=(const SharedPtr<Y>& sharedPtr)
+    {
+        Reset(static_cast<T*>(sharedPtr.GetPointer()), sharedPtr._refCount, true);
+        return *this;
+    }
+
+    AtomicSharedPtr& operator=(SharedPtr<T>&& sharedPtr)
+    {
+        Reset(sharedPtr._object, sharedPtr._refCount, false);
+        sharedPtr._object = nullptr;
+        sharedPtr._refCount = nullptr;
+        return *this;
+    }
+
+    template <class Y> requires std::assignable_from<T*&, Y*>
+    AtomicSharedPtr<T>& operator=(SharedPtr<Y>&& sharedPtr)
+    {
+        Reset(static_cast<T*>(sharedPtr.GetPointer()), sharedPtr._refCount, false);
+        sharedPtr._object = nullptr;
+        sharedPtr._refCount = nullptr;
+        return *this;
+    }
+
+    SharedPtr<T> Lock() const
+    {
+        u32 irq = rtos_disableIrqs();
+        auto object = static_cast<T*>(_object);
+        auto refCount = _refCount;
+        if (refCount)
+        {
+            refCount->refCount++;
+        }
+        rtos_restoreIrqs(irq);
+        return SharedPtr<T>(object, refCount);
+    }
+};

arm9/source/core/EnableSharedFromThis.h

@@ -0,0 +1,42 @@
+#pragma once
+#include "SharedPtr.h"
+#include "WeakPtr.h"
+
+class EnableSharedFromThisBase
+{
+    template <class Y>
+    friend class SharedPtr;
+
+    template <class Y>
+    friend class EnableSharedFromThis;
+
+private:
+    EnableSharedFromThisBase() = default;
+};
+
+template <class T>
+class EnableSharedFromThis : public EnableSharedFromThisBase
+{
+    template <class Y>
+    friend class SharedPtr;
+
+public:
+    SharedPtr<T> SharedFromThis()
+    {
+        return __sharedFromThisWeakPtr.Lock();
+    }
+
+    WeakPtr<T> WeakFromThis()
+    {
+        return __sharedFromThisWeakPtr;
+    }
+
+private:
+    WeakPtr<T> __sharedFromThisWeakPtr;
+
+    template <class Y>
+    void __SetSharedFromThisWeakPtr(const SharedPtr<Y>& sharedPtr)
+    {
+        __sharedFromThisWeakPtr = WeakPtr<Y>(sharedPtr.GetPointer(), sharedPtr._refCount);
+    }
+};

arm9/source/core/RefCount.h

@@ -0,0 +1,58 @@
+#pragma once
+#include <array>
+
+extern "C" void shared_ptr_increase_ref_count(vu32& refCount);
+
+class RefCount
+{
+public:
+    vu32 refCount;
+    vu32 weakRefCount;
+
+    virtual ~RefCount() = default;
+
+    virtual void DestructObject() = 0;
+
+protected:
+    explicit RefCount()
+        : refCount(1), weakRefCount(0) { }
+};
+
+template <class T>
+class StandaloneRefCount : public RefCount
+{
+public:
+    explicit StandaloneRefCount(T* object)
+        : _object(object) { }
+
+    void DestructObject() final
+    {
+        delete _object;
+    }
+
+private:
+    T* _object;
+};
+
+template <class T>
+class alignas(T) MakeSharedRefCount : public RefCount
+{
+public:
+    explicit MakeSharedRefCount(auto&&... args)
+    {
+        new (_object.data()) T(std::forward<decltype(args)>(args)...);
+    }
+
+    T* GetObject()
+    {
+        return reinterpret_cast<T*>(_object.data());
+    }
+
+    void DestructObject() final
+    {
+        reinterpret_cast<T*>(_object.data())->~T();
+    }
+
+private:
+    std::array<u8, sizeof(T)> _object alignas(T);
+};

arm9/source/core/SharedPtr.cpp

@@ -0,0 +1,31 @@
+#include "common.h"
+#include <libtwl/rtos/rtosIrq.h>
+#include "SharedPtr.h"
+
+void SharedPtrBase::ResetIntern()
+{
+    auto refCount = _refCount;
+    _object = nullptr;
+    _refCount = nullptr;
+    u32 irq = rtos_disableIrqs(); // 1
+    if (--refCount->refCount == 0) [[gnu::unlikely]]
+    {
+        refCount->weakRefCount++; // ensure the ref count is not destructed elsewhere
+        rtos_restoreIrqs(irq); // 1
+        refCount->DestructObject();
+        irq = rtos_disableIrqs(); // 2
+        if (--refCount->weakRefCount == 0) [[gnu::unlikely]]
+        {
+            rtos_restoreIrqs(irq); // 2
+            delete refCount;
+        }
+        else
+        {
+            rtos_restoreIrqs(irq); // 2
+        }
+    }
+    else
+    {
+        rtos_restoreIrqs(irq); // 1
+    }
+}

arm9/source/core/SharedPtr.h

@@ -1,163 +1,216 @@
 #pragma once
+#include <type_traits>
+#include "RefCount.h"
 
-static inline u32 arm_getCpsr()
-{
-    u32 cpsr;
-    asm volatile("mrs %0, cpsr" : "=r" (cpsr));
-    return cpsr;
-}
-
-static inline void arm_setCpsrControl(u32 cpsrControl)
-{
-    asm volatile("msr cpsr_c, %0" :: "r" (cpsrControl) : "cc");
-}
-
-static inline u32 arm_disableIrqs(void)
-{
-    u32 oldCpsr = arm_getCpsr();
-    arm_setCpsrControl(oldCpsr | 0x80);
-    return oldCpsr;
-}
-
-static inline void arm_restoreIrqs(u32 oldCpsr)
-{
-    arm_setCpsrControl(oldCpsr);
-}
+class EnableSharedFromThisBase;
 
 template <class T>
-class SharedPtr
+class EnableSharedFromThis;
+
+class SharedPtrBase
 {
-    T* _pointer;
-    vu32* _refCount;
-
 public:
-    SharedPtr()
-        : _pointer(nullptr), _refCount(nullptr) { (void)sizeof(T); }
-
-    explicit SharedPtr(T* pointer)
-        : _pointer(pointer), _refCount(pointer ? new u32(1) : nullptr) { (void)sizeof(T); }
-
-    SharedPtr(const SharedPtr& other)
+    void Reset()
     {
-        u32 irq = arm_disableIrqs();
-        _pointer = other._pointer;
-        _refCount = other._refCount;
-        if (_pointer)
+        if (_refCount != nullptr)
         {
-            (*_refCount)++;
+            ResetIntern();
         }
-        arm_restoreIrqs(irq);
     }
 
-    SharedPtr(SharedPtr&& other)
-        : _pointer(other._pointer), _refCount(other._refCount)
-    {
-        other._pointer = nullptr;
-        other._refCount = nullptr;
-    }
+protected:
+    void* _object;
+    RefCount* _refCount;
 
-    ~SharedPtr()
+    SharedPtrBase()
+        : _object(nullptr), _refCount(nullptr) { }
+
+    SharedPtrBase(void* object, RefCount* refCount)
+        : _object(object), _refCount(refCount) { }
+
+    SharedPtrBase(const void* object, RefCount* refCount)
+        : _object((void*)object), _refCount(refCount) { }
+
+    ~SharedPtrBase()
     {
         Reset();
     }
 
-    [[gnu::noinline]]
+    void ResetIntern();
+};
+
+template <class T>
+class SharedPtr : public SharedPtrBase
+{
+    template <class Y> friend class WeakPtr;
+    template <class Y> friend class SharedPtr;
+    template <class Y> friend class AtomicSharedPtr;
+    template <class Y> friend class EnableSharedFromThis;
+
+public:
+    SharedPtr() { }
+
+    SharedPtr(std::nullptr_t) { }
+
+    explicit SharedPtr(T* object)
+        : SharedPtrBase(object, object == nullptr ? nullptr : new StandaloneRefCount<T>(object))
+    {
+        if (_object != nullptr)
+        {
+            if constexpr (std::is_convertible<T*, EnableSharedFromThisBase*>::value)
+            {
+                _refCount->weakRefCount = 1;
+                GetPointer()->__SetSharedFromThisWeakPtr(*this);
+            }
+        }
+    }
+
+    template <class Y> requires std::assignable_from<T*&, Y*>
+    explicit SharedPtr(Y* object)
+        : SharedPtrBase(static_cast<T*>(object), object == nullptr ? nullptr : new StandaloneRefCount<Y>(object))
+    {
+        if (object != nullptr)
+        {
+            if constexpr (std::is_convertible<Y*, EnableSharedFromThisBase*>::value)
+            {
+                _refCount->weakRefCount = 1;
+                GetPointer()->__SetSharedFromThisWeakPtr(*this);
+            }
+        }
+    }
+
+    SharedPtr(const SharedPtr& other)
+        : SharedPtrBase(other._object, other._refCount)
+    {
+        if (_refCount)
+        {
+            shared_ptr_increase_ref_count(_refCount->refCount);
+        }
+    }
+
+    template <class Y> requires std::assignable_from<T*&, Y*>
+    SharedPtr(const SharedPtr<Y>& other)
+        : SharedPtrBase(static_cast<T*>(other.GetPointer()), other._refCount)
+    {
+        if (_refCount)
+        {
+            shared_ptr_increase_ref_count(_refCount->refCount);
+        }
+    }
+
+    template <class Y>
+    explicit SharedPtr(const SharedPtr<Y>& other)
+        : SharedPtrBase(static_cast<T*>(other.GetPointer()), other._refCount)
+    {
+        if (_refCount)
+        {
+            shared_ptr_increase_ref_count(_refCount->refCount);
+        }
+    }
+
+    SharedPtr(SharedPtr&& other)
+        : SharedPtrBase(other._object, other._refCount)
+    {
+        other._object = nullptr;
+        other._refCount = nullptr;
+    }
+
+    template <class Y> requires std::assignable_from<T*&, Y*>
+    SharedPtr(SharedPtr<Y>&& other)
+        : SharedPtrBase(static_cast<T*>(other.GetPointer()), other._refCount)
+    {
+        other._object = nullptr;
+        other._refCount = nullptr;
+    }
+
+    template <class Y>
+    explicit SharedPtr(SharedPtr<Y>&& other)
+        : SharedPtrBase(static_cast<T*>(other.GetPointer()), other._refCount)
+    {
+        other._object = nullptr;
+        other._refCount = nullptr;
+    }
+
+    static SharedPtr<T> MakeShared(auto&&... args)
+    {
+        auto refCount = new MakeSharedRefCount<T>(std::forward<decltype(args)>(args)...);
+        return SharedPtr<T>(refCount->GetObject(), refCount, true);
+    }
+
     SharedPtr& operator=(const SharedPtr& other)
     {
-        u32 irq = arm_disableIrqs();
-        T* pointer = _pointer;
-        if (pointer)
+        Reset();
+        _object = other._object;
+        _refCount = other._refCount;
+        if (_refCount)
         {
-            vu32* refCount = _refCount;
-            u32 newValue = *refCount - 1;
-            *refCount = newValue;
-            _pointer = other._pointer;
-            _refCount = other._refCount;
-            if (_pointer)
-            {
-                (*_refCount)++;
-            }
-            arm_restoreIrqs(irq);
-            if (newValue == 0)
-            {
-                delete pointer;
-                delete refCount;
-            }
-        }
-        else
-        {
-            _pointer = other._pointer;
-            _refCount = other._refCount;
-            if (_pointer)
-            {
-                (*_refCount)++;
-            }
-            arm_restoreIrqs(irq);
+            shared_ptr_increase_ref_count(_refCount->refCount);
+        }
+        return *this;
+    }
+
+    template <class Y> requires std::assignable_from<T*&, Y*>
+    SharedPtr<T>& operator=(const SharedPtr<Y>& other)
+    {
+        Reset();
+        _object = static_cast<T*>(other.GetPointer());
+        _refCount = other._refCount;
+        if (_refCount)
+        {
+            shared_ptr_increase_ref_count(_refCount->refCount);
         }
         return *this;
     }
 
-    [[gnu::noinline]]
     SharedPtr& operator=(SharedPtr&& other)
     {
-        u32 irq = arm_disableIrqs();
-        T* pointer = _pointer;
-        if (pointer)
-        {
-            vu32* refCount = _refCount;
-            u32 newValue = *refCount - 1;
-            *refCount = newValue;
-            _pointer = other._pointer;
-            _refCount = other._refCount;
-            other._pointer = nullptr;
-            other._refCount = nullptr;
-            arm_restoreIrqs(irq);
-            if (newValue == 0)
-            {
-                delete pointer;
-                delete refCount;
-            }
-        }
-        else
-        {
-            _pointer = other._pointer;
-            _refCount = other._refCount;
-            other._pointer = nullptr;
-            other._refCount = nullptr;
-            arm_restoreIrqs(irq);
-        }
+        Reset();
+        _object = other._object;
+        _refCount = other._refCount;
+        other._object = nullptr;
+        other._refCount = nullptr;
         return *this;
     }
 
-    [[gnu::noinline]]
-    void Reset()
+    template <class Y> requires std::assignable_from<T*&, Y*>
+    SharedPtr<T>& operator=(SharedPtr<Y>&& other)
     {
-        u32 irq = arm_disableIrqs();
-        T* pointer = _pointer;
-        if (pointer)
-        {
-            vu32* refCount = _refCount;
-            u32 newValue = *refCount - 1;
-            *refCount = newValue;
-            _pointer = nullptr;
-            _refCount = nullptr;
-            arm_restoreIrqs(irq);
-            if (newValue == 0)
-            {
-                delete pointer;
-                delete refCount;
-            }
-        }
-        else
-        {
-            arm_restoreIrqs(irq);
-        }
+        Reset();
+        _object = static_cast<T*>(other.GetPointer());
+        _refCount = other._refCount;
+        other._object = nullptr;
+        other._refCount = nullptr;
+        return *this;
     }
 
-    constexpr T& operator*() const { return *_pointer; }
-    constexpr T* operator->() const { return _pointer; }
+    T& operator*() const { return *static_cast<T*>(_object); }
+    T* operator->() const { return static_cast<T*>(_object); }
+    T* GetPointer() const { return static_cast<T*>(_object); }
 
-    constexpr T* GetPointer() const { return _pointer; }
-    constexpr u32 GetRefCount() const { return _refCount ? *_refCount : 0; }
-    constexpr bool IsValid() const { return _pointer; }
+    bool IsValid() const { return _object != nullptr; }
+    operator bool() const { return _object != nullptr; }
+
+private:
+    SharedPtr(T* object, RefCount* refCount)
+        : SharedPtrBase(object, refCount) { }
+
+    SharedPtr(T* object, RefCount* refCount, bool doSharedFromThis)
+        : SharedPtrBase(object, refCount)
+    {
+        if (doSharedFromThis)
+        {
+            if constexpr (std::is_convertible<T*, EnableSharedFromThisBase*>::value)
+            {
+                _refCount->weakRefCount = 1;
+                GetPointer()->__SetSharedFromThisWeakPtr(*this);
+            }
+        }
+    }
 };
+
+#define SHARED_ONLY(className) \
+    friend class MakeSharedRefCount<className>; \
+public: \
+    static SharedPtr<className> CreateShared(auto&&... args) \
+    { return SharedPtr<className>::MakeShared(std::forward<decltype(args)>(args)...); } \
+private:

arm9/source/core/SharedPtrAsm.s

@@ -0,0 +1,15 @@
+.section .itcm
+.arm
+
+// r0 = &refCount
+.global shared_ptr_increase_ref_count
+.type shared_ptr_increase_ref_count, %function
+shared_ptr_increase_ref_count:
+    mrs r2, cpsr
+    orr r1, r2, #0x80
+    msr cpsr_c, r1
+    ldr r12, [r0]
+    add r12, r12, #1
+    str r12, [r0]
+    msr cpsr_c, r2
+    bx lr

arm9/source/core/WeakPtr.cpp

@@ -0,0 +1,35 @@
+#include "common.h"
+#include <libtwl/rtos/rtosIrq.h>
+#include "WeakPtr.h"
+
+void WeakPtrBase::ResetIntern()
+{
+    u32 irq = rtos_disableIrqs();
+    auto refCount = _refCount;
+    if (--refCount->weakRefCount == 0)
+    {
+        _refCount = nullptr;
+        rtos_restoreIrqs(irq);
+        delete refCount;
+    }
+    else
+    {
+        rtos_restoreIrqs(irq);
+    }
+}
+
+bool WeakPtrBase::LockIntern() const
+{
+    u32 irq = rtos_disableIrqs();
+    if (_refCount->refCount != 0)
+    {
+        _refCount->refCount++;
+        rtos_restoreIrqs(irq);
+        return true;
+    }
+    else
+    {
+        rtos_restoreIrqs(irq);
+        return false;
+    }
+}

arm9/source/core/WeakPtr.h

@@ -0,0 +1,158 @@
+#pragma once
+#include <type_traits>
+#include "RefCount.h"
+#include "SharedPtr.h"
+
+class WeakPtrBase
+{
+public:
+    ~WeakPtrBase()
+    {
+        Reset();
+    }
+
+    void Reset()
+    {
+        if (_refCount)
+        {
+            Reset();
+        }
+    }
+
+protected:
+    RefCount* _refCount;
+
+    WeakPtrBase()
+        : _refCount(nullptr) { }
+
+    explicit WeakPtrBase(RefCount* refCount)
+        : _refCount(refCount) { }
+
+    void ResetIntern();
+    bool LockIntern() const;
+};
+
+template <class T>
+class WeakPtr : public WeakPtrBase
+{
+    template <class Y> friend class WeakPtr;
+    template <class Y> friend class EnableSharedFromThis;
+
+public:
+    WeakPtr() { }
+
+    WeakPtr(std::nullptr_t) { }
+
+    WeakPtr(const WeakPtr& other)
+        : WeakPtrBase(other._refCount), _object(other._object)
+    {
+        if (_refCount)
+        {
+            shared_ptr_increase_ref_count(_refCount->weakRefCount);
+        }
+    }
+
+    WeakPtr(WeakPtr&& other)
+        : WeakPtrBase(other._refCount), _object(other._object)
+    {
+        other._refCount = nullptr;
+        other._object = nullptr;
+    }
+
+    template <class Y> requires std::assignable_from<T*&, Y*>
+    WeakPtr(const SharedPtr<Y>& sharedPtr)
+        : WeakPtrBase(sharedPtr._refCount), _object(static_cast<T*>(sharedPtr.GetPointer()))
+    {
+        if (_refCount)
+        {
+            shared_ptr_increase_ref_count(_refCount->weakRefCount);
+        }
+    }
+
+    template <class Y>
+    explicit WeakPtr(const SharedPtr<Y>& sharedPtr)
+        : WeakPtrBase(sharedPtr._refCount), _object(static_cast<T*>(sharedPtr.GetPointer()))
+    {
+        if (_refCount)
+        {
+            shared_ptr_increase_ref_count(_refCount->weakRefCount);
+        }
+    }
+
+    WeakPtr& operator=(const WeakPtr& other)
+    {
+        Reset();
+        _object = other._object;
+        _refCount = other._refCount;
+        if (_refCount)
+        {
+            shared_ptr_increase_ref_count(_refCount->weakRefCount);
+        }
+        return *this;
+    }
+
+    template <class Y> requires std::assignable_from<T*&, Y*>
+    WeakPtr<T>& operator=(const WeakPtr<Y>& other)
+    {
+        Reset();
+        _object = static_cast<T*>(static_cast<Y*>(other._object));
+        _refCount = other._refCount;
+        if (_refCount)
+        {
+            shared_ptr_increase_ref_count(_refCount->weakRefCount);
+        }
+        return *this;
+    }
+
+    template <class Y> requires std::assignable_from<T*&, Y*>
+    WeakPtr<T>& operator=(const SharedPtr<Y>& sharedPtr)
+    {
+        Reset();
+        _object = static_cast<T*>(sharedPtr.GetPointer());
+        _refCount = sharedPtr._refCount;
+        if (_refCount)
+        {
+            shared_ptr_increase_ref_count(_refCount->weakRefCount);
+        }
+        return *this;
+    }
+
+    WeakPtr& operator=(WeakPtr&& other)
+    {
+        Reset();
+        _object = other._object;
+        _refCount = other._refCount;
+        other._object = nullptr;
+        other._refCount = nullptr;
+        return *this;
+    }
+
+    template <class Y> requires std::assignable_from<T*&, Y*>
+    WeakPtr<T>& operator=(WeakPtr<Y>&& other)
+    {
+        Reset();
+        _object = static_cast<T*>(static_cast<Y*>(other._object));
+        _refCount = other._refCount;
+        other._object = nullptr;
+        other._refCount = nullptr;
+        return *this;
+    }
+
+    SharedPtr<T> Lock() const
+    {
+        if (_refCount && LockIntern())
+        {
+            return SharedPtr<T>(_object, _refCount);
+        }
+        else
+        {
+            return SharedPtr<T>();
+        }
+    }
+
+private:
+    T* _object;
+
+    WeakPtr(T* object, RefCount* refCount)
+        : WeakPtrBase(refCount), _object(object) { }
+};

arm9/source/core/math/Rgb.h

@@ -75,3 +75,5 @@ public:
         return Rgb(r + other.r, g + other.g, b + other.b);
     }
 };
+
+using Rgb8 = Rgb<8, 8, 8>;

arm9/source/core/math/fixed.h

@@ -161,11 +161,27 @@ public:
         return FromRawValue(this->_value >> rhs);
     }
 
-    constexpr fix16 abs() const
+    constexpr fix16 Abs() const
     {
         return FromRawValue(std::abs(this->_value));
     }
 
+    constexpr fix16 Clamp(fix16 min, fix16 max) const
+    {
+        if (this->_value < min._value)
+        {
+            return min;
+        }
+        else if (this->_value > max._value)
+        {
+            return max;
+        }
+        else
+        {
+            return *this;
+        }
+    }
+
     template <u32 OtherFractionBits>
     constexpr fix32<FractionBits + OtherFractionBits> LongMul(const fix16<OtherFractionBits>& other) const
     {
@@ -265,21 +281,45 @@ public:
         return this->_value < other._value;
     }
 
+    template <typename TLhs>
+    constexpr friend bool operator<(TLhs lhs, const fix32& rhs)
+    {
+        return fix32(lhs)._value < rhs._value;
+    }
+
     constexpr bool operator<=(const fix32& other) const
     {
         return this->_value <= other._value;
     }
 
+    template <typename TLhs>
+    constexpr friend bool operator<=(TLhs lhs, const fix32& rhs)
+    {
+        return fix32(lhs)._value <= rhs._value;
+    }
+
     constexpr bool operator>(const fix32& other) const
     {
         return this->_value > other._value;
     }
 
+    template <typename TLhs>
+    constexpr friend bool operator>(TLhs lhs, const fix32& rhs)
+    {
+        return fix32(lhs)._value > rhs._value;
+    }
+
     constexpr bool operator>=(const fix32& other) const
     {
         return this->_value >= other._value;
     }
 
+    template <typename TLhs>
+    constexpr friend bool operator>=(TLhs lhs, const fix32& rhs)
+    {
+        return fix32(lhs)._value >= rhs._value;
+    }
+
     constexpr fix32 operator-() const
     {
         return FromRawValue(-this->_value);
@@ -337,6 +377,22 @@ public:
         return FromRawValue(std::abs(this->_value));
     }
 
+    constexpr fix32 Clamp(fix32 min, fix32 max) const
+    {
+        if (this->_value < min._value)
+        {
+            return min;
+        }
+        else if (this->_value > max._value)
+        {
+            return max;
+        }
+        else
+        {
+            return *this;
+        }
+    }
+
     template <u32 OtherFractionBits>
     constexpr fix64<FractionBits + OtherFractionBits> LongMul(const fix16<OtherFractionBits>& other) const
     {
@@ -354,6 +410,11 @@ public:
         return fix64<FractionBits>::FromRawValue((s64)this->_value * other);
     }
 
+    constexpr fix64<FractionBits> LongMul(double other) const
+    {
+        return LongMul(fix32(other));
+    }
+
     template <u32 OtherFractionBits>
     constexpr fix32 operator*(const fix16<OtherFractionBits>& other) const
     {
@@ -371,6 +432,11 @@ public:
         return FromRawValue(this->_value * other);
     }
 
+    constexpr fix32 operator*(double other) const
+    {
+        return fix32(LongMul(fix32(other)));
+    }
+
     constexpr friend fix32 operator*(int lhs, const fix32& rhs)
     {
         return FromRawValue(lhs * rhs.GetRawValue());

arm9/source/core/task/Task.cpp

@@ -1,9 +1,20 @@
 #include "common.h"
 #include "Task.h"
 
-void TaskBase::Execute()
+void TaskBase::RequestCancel()
 {
     u32 irqs = rtos_disableIrqs();
+    _cancelRequested = true;
+    if (_state == TaskState::NotStarted)
+    {
+        _state = TaskState::Canceled;
+        rtos_wakeupQueue(&_threadQueue);
+    }
+    rtos_restoreIrqs(irqs);
+}
+
+void TaskBase::Execute(u32 irqs)
+{
     if (_state == TaskState::NotStarted)
     {
         _state = TaskState::Running;
@@ -12,7 +23,9 @@ void TaskBase::Execute()
         SetFinalState(finalState);
     }
     else
+    {
         rtos_restoreIrqs(irqs);
+    }
 }
 
 void TaskBase::SetFinalState(TaskState finalState)

arm9/source/core/task/Task.h

@@ -3,14 +3,17 @@
 #include <memory>
 #include <libtwl/rtos/rtosIrq.h>
 #include <libtwl/rtos/rtosThread.h>
+#include "core/LinkedListLink.h"
 #include "TaskResult.h"
 
 class TaskBase
 {
 public:
+    LinkedListLink link;
+
     virtual ~TaskBase() { }
 
-    void Execute();
+    void Execute(u32 irqs);
 
     TaskState GetState() const { return _state; }
 
@@ -24,7 +27,7 @@ public:
     bool GetDestroyWhenComplete() const { return _destroyWhenComplete; }
     void SetDestroyWhenComplete() { _destroyWhenComplete = true; }
 
-    void RequestCancel() { _cancelRequested = true; }
+    void RequestCancel();
     bool IsCancelRequested() const { return _cancelRequested; }
 
 protected:
@@ -65,7 +68,7 @@ template <>
 class Task<void> : public TaskBase
 {
 protected:
-    virtual TaskResult<void> ExecuteFunc() const = 0;
+    virtual TaskResult<void> ExecuteFunc() = 0;
 
 private:
     TaskState ExecuteDirect() override
@@ -79,11 +82,11 @@ template <class T, typename FuncType>
 class FuncTask : public Task<T>
 {
 public:
-    FuncTask(const FuncType& function)
-        : _function(function) { }
+    FuncTask(FuncType&& function)
+        : _function(std::move(function)) { }
 
 private:
-    const FuncType _function;
+    FuncType _function;
 
-    TaskResult<T> ExecuteFunc() const override { return _function((const volatile u8&)this->_cancelRequested); }
+    TaskResult<T> ExecuteFunc() override { return _function((const volatile u8&)this->_cancelRequested); }
 };

arm9/source/core/task/TaskQueue.cpp

@@ -1,23 +1,22 @@
 #include "common.h"
 #include "TaskQueue.h"
 
-void TaskQueueBase::ThreadMain(TaskBase** queue, u32 queueLength)
+void TaskQueueBase::ThreadMain()
 {
     while (true)
     {
         _idle = false;
-        u32 readPtr = _queueReadPtr;
-        while (readPtr != _queueWritePtr)
+        while (true)
         {
-            TaskBase* task = queue[readPtr];
-            if (readPtr == queueLength - 1)
-                readPtr = 0;
-            else
-                readPtr++;
-            _queueReadPtr = readPtr;
+            u32 irqs = rtos_disableIrqs();
+            auto task = _taskList.GetHead();
             if (!task)
-                continue;
-            task->Execute();
+            {
+                rtos_restoreIrqs(irqs);
+                break;
+            }
+            _taskList.Remove(task);
+            task->Execute(irqs);
             if (task->GetDestroyWhenComplete())
             {
                 // this will destroy the task

arm9/source/core/task/TaskQueue.h

@@ -4,6 +4,7 @@
 #include <libtwl/rtos/rtosEvent.h>
 #include <libtwl/rtos/rtosThread.h>
 #include "core/BitVector.h"
+#include "core/LinkedList.h"
 #include "Task.h"
 
 class TaskQueueBase;
@@ -11,25 +12,13 @@ class TaskQueueBase;
 class QueueTaskBase
 {
 public:
-    // forbid copies
-    QueueTaskBase(const QueueTaskBase&) = delete;
-    QueueTaskBase& operator=(const QueueTaskBase&) = delete;
-
-    // move assignment
-    QueueTaskBase& operator=(QueueTaskBase&& other)
-    {
-        _taskQueue = other._taskQueue;
-        _task = other._task;
-        other._taskQueue = nullptr;
-        other._task = nullptr;
-        return *this;
-    }
-
     ~QueueTaskBase()
     {
         // extra check here for optimizing out the dispose call after move assignment
         if (_task)
+        {
             Dispose();
+        }
     }
 
     void Dispose();
@@ -47,12 +36,10 @@ public:
 
 protected:
     TaskBase* _task;
+    TaskQueueBase* _taskQueue;
 
     QueueTaskBase(TaskBase* task, TaskQueueBase* taskQueue)
         : _task(task), _taskQueue(taskQueue) { }
-
-private:
-    TaskQueueBase* _taskQueue;
 };
 
 template <typename T>
@@ -62,6 +49,26 @@ public:
     QueueTask()
         : QueueTaskBase(nullptr, nullptr) { }
 
+    QueueTask(const QueueTask&) = delete;
+    QueueTask& operator=(const QueueTask&) = delete;
+
+    QueueTask(QueueTask&& other)
+        : QueueTaskBase(other._task, other._taskQueue)
+    {
+        other._task = nullptr;
+        other._taskQueue = nullptr;
+    }
+
+    QueueTask& operator=(QueueTask&& other)
+    {
+        Dispose();
+        _taskQueue = other._taskQueue;
+        _task = other._task;
+        other._taskQueue = nullptr;
+        other._task = nullptr;
+        return *this;
+    }
+
     QueueTask(Task<T>* task, TaskQueueBase* taskQueue)
         : QueueTaskBase(task, taskQueue) { }
 
@@ -79,24 +86,23 @@ public:
 
     template <typename FuncType>
     [[gnu::noinline]]
-    auto Enqueue(const FuncType& function) -> QueueTask<decltype(TaskResultToResultType(function(*new vu8())))>
+    auto Enqueue(FuncType&& function) -> QueueTask<decltype(TaskResultToResultType(function(*new vu8())))>
     {
         using TaskType = FuncTask<decltype(TaskResultToResultType(function(*new vu8()))), FuncType>;
         // static_assert(sizeof(TaskType) <= MaxTaskSize, "Task is too big for this pool");
         void* slot = GetSlot();
-        auto task = new (slot) TaskType(function);
+        auto task = new (slot) TaskType(std::move(function));
         Enqueue(task);
         return QueueTask(task, this);
     }
 
 protected:
     rtos_event_t _event;
-    vu32 _queueReadPtr = 0;
-    vu32 _queueWritePtr = 0;
+    LinkedList<TaskBase, &TaskBase::link> _taskList;
     volatile bool _endThreadWhenDone = false;
     volatile bool _idle = true;
 
-    void ThreadMain(TaskBase** queue, u32 queueLength);
+    void ThreadMain();
 
     TaskQueueBase()
     {
@@ -124,6 +130,10 @@ public:
         u32 irqs = rtos_disableIrqs();
         if (task->IsCompleted())
         {
+            if (task->link.prev != nullptr || task->link.next != nullptr)
+            {
+                _taskList.Remove(task);
+            }
             task->~TaskBase();
             u32 slot = ((u32)task - (u32)_taskPool) / ((MaxTaskSize + 3) & ~3);
             _poolOccupation.Set(slot, 0);
@@ -159,13 +169,12 @@ public:
 
     bool IsIdle() const
     {
-        return _queueReadPtr == _queueWritePtr && _idle;
+        return _taskList.GetHead() == nullptr && _idle;
     }
 
 private:
     u32 _taskPool[QueueLength][(MaxTaskSize + 3) / 4];
     BitVector<QueueLength> _poolOccupation;
-    TaskBase* _queue[QueueLength];
     rtos_thread_t _thread;
     bool _threadStarted = false;
 
@@ -191,12 +200,11 @@ private:
     [[gnu::noinline]]
     void Enqueue(TaskBase* task) override
     {
-        u32 writePtr = _queueWritePtr;
-        _queue[writePtr] = task;
-        if (writePtr == QueueLength - 1)
-            _queueWritePtr = 0;
-        else
-            _queueWritePtr = writePtr + 1;
+        u32 irqs = rtos_disableIrqs();
+        {
+            _taskList.InsertTail(task);
+        }
+        rtos_restoreIrqs(irqs);
         rtos_signalEvent(&_event);
     }
 
@@ -207,6 +215,6 @@ private:
 
     void ThreadMain()
     {
-        TaskQueueBase::ThreadMain(&_queue[0], QueueLength);
+        TaskQueueBase::ThreadMain();
     }
 };

arm9/source/globalHeap.cpp

@@ -60,6 +60,16 @@ extern "C" void* memalign(size_t alignment, size_t size)
     return result;
 }
 
+extern "C" void* calloc(size_t num, size_t size)
+{
+    void* result = malloc(num * size);
+    if (result)
+    {
+        memset(result, 0, num * size);
+    }
+    return result;
+}
+
 void* operator new(std::size_t blocksize)
 {
     return malloc(blocksize);

arm9/source/gui/AdvancedPaletteManager.cpp

@@ -89,14 +89,8 @@ u32 AdvancedPaletteManagerBase::TryMerge(PaletteRow* rows, const PaletteRow& new
 
 u32 AdvancedPaletteManagerBase::AllocRowInternal(PaletteRow* rows, const IPalette& palette, int yStart, int yEnd)
 {
-    if (yStart < 0)
-    {
-        yStart = 0;
-    }
-    if (yEnd > 192)
-    {
-        yEnd = 192;
-    }
+    yStart = std::clamp(yStart, 0, 192);
+    yEnd = std::clamp(yEnd, 0, 192);
 
     u32 newIdx = _usedRows;
     PaletteRow& newRow = rows[newIdx];

arm9/source/gui/AdvancedPaletteManager.h

@@ -84,6 +84,7 @@ public:
 
     u32 AllocRow(const IPalette& palette, int yStart, int yEnd) override
     {
+        yEnd++; // avoid back to back allocation
         return AllocRowInternal(_rows[_curSet], palette, yStart, yEnd);
     }
 

arm9/source/gui/FocusManager.cpp

@@ -3,7 +3,7 @@
 #include "input/InputProvider.h"
 #include "FocusManager.h"
 
-void FocusManager::Focus(View* newFocus)
+void FocusManager::Focus(const SharedPtr<View>& newFocus)
 {
     if (!newFocus)
     {
@@ -11,48 +11,71 @@ void FocusManager::Focus(View* newFocus)
         return;
     }
 
-    if (_currentFocus)
-        _currentFocus->SetFocused(false);
+    if (auto currentFocus = _currentFocus.Lock())
+    {
+        currentFocus->SetFocused(false);
+    }
     newFocus->SetFocused(true);
     _currentFocus = newFocus;
 }
 
 void FocusManager::Unfocus()
 {
-    if (_currentFocus)
-        _currentFocus->SetFocused(false);
-    _currentFocus = nullptr;
+    if (auto currentFocus = _currentFocus.Lock())
+    {
+        currentFocus->SetFocused(false);
+    }
+    _currentFocus.Reset();
 }
 
 void FocusManager::Update(const InputProvider& inputProvider)
 {
-    if (!_currentFocus || !_currentFocus->GetParent())
+    auto currentFocus = _currentFocus.Lock();
+    if (!currentFocus || !currentFocus->GetParent())
         return; // todo
 
-    View* newFocus = nullptr;
+    SharedPtr<View> newFocus;
     if (inputProvider.Triggered(InputKey::DpadUp))
-        newFocus = _currentFocus->GetParent()->MoveFocus(_currentFocus, FocusMoveDirection::Up, _currentFocus);
+    {
+        newFocus = currentFocus->GetParent()->MoveFocus(currentFocus, FocusMoveDirection::Up, currentFocus.GetPointer());
+    }
     else if (inputProvider.Triggered(InputKey::DpadDown))
-        newFocus = _currentFocus->GetParent()->MoveFocus(_currentFocus, FocusMoveDirection::Down, _currentFocus);
+    {
+        newFocus = currentFocus->GetParent()->MoveFocus(currentFocus, FocusMoveDirection::Down, currentFocus.GetPointer());
+    }
     else if (inputProvider.Triggered(InputKey::DpadLeft))
-        newFocus = _currentFocus->GetParent()->MoveFocus(_currentFocus, FocusMoveDirection::Left, _currentFocus);
+    {
+        newFocus = currentFocus->GetParent()->MoveFocus(currentFocus, FocusMoveDirection::Left, currentFocus.GetPointer());
+    }
     else if (inputProvider.Triggered(InputKey::DpadRight))
-        newFocus = _currentFocus->GetParent()->MoveFocus(_currentFocus, FocusMoveDirection::Right, _currentFocus);
+    {
+        newFocus = currentFocus->GetParent()->MoveFocus(currentFocus, FocusMoveDirection::Right, currentFocus.GetPointer());
+    }
     else
-        _currentFocus->HandleInput(inputProvider, *this);
+    {
+        currentFocus->HandleInput(inputProvider, *this);
+    }
 
     if (newFocus)
+    {
         Focus(newFocus);
+    }
 }
 
 bool FocusManager::IsFocusInside(const View* view) const
 {
-    auto focusView = _currentFocus;
-    while (focusView)
+    if (auto currentFocus = _currentFocus.Lock())
     {
-        if (view == focusView)
-            return true;
-        focusView = focusView->GetParent();
+        auto focusView = currentFocus.GetPointer();
+        while (focusView)
+        {
+            if (view == focusView)
+            {
+                return true;
+            }
+
+            focusView = focusView->GetParent();
+        }
     }
     return false;
 }

arm9/source/gui/FocusManager.h

@@ -1,4 +1,6 @@
 #pragma once
+#include <core/SharedPtr.h>
+#include <core/WeakPtr.h>
 
 class View;
 class InputProvider;
@@ -9,7 +11,7 @@ class FocusManager
 public:
     /// @brief Focuses the given view.
     /// @param newFocus The view to focus.
-    void Focus(View* newFocus);
+    void Focus(const SharedPtr<View>& newFocus);
 
     /// @brief Clears the current focus.
     void Unfocus();
@@ -20,7 +22,7 @@ public:
 
     /// @brief Gets the currently focused view.
     /// @return A pointer to the view that is currently focused, or null if none.
-    constexpr View* GetCurrentFocus() const { return _currentFocus; }
+    constexpr SharedPtr<View> GetCurrentFocus() const { return _currentFocus.Lock(); }
 
     /// @brief Checks whether the current focus lies inside the given view.
     /// @param view The view to check for.
@@ -28,5 +30,5 @@ public:
     bool IsFocusInside(const View* view) const;
 
 private:
-    View* _currentFocus = nullptr;
+    WeakPtr<View> _currentFocus;
 };

arm9/source/gui/font/nitroFont2.cpp

@@ -28,24 +28,28 @@ int nft2_findGlyphIdxForCharacter(const nft2_header_t* font, u16 character)
 }
 
 static inline void renderGlyph(const nft2_header_t* font, const nft2_glyph_t* glyph,
-    int xPos, int yPos, int width, int height, u8* dst, u32 stride, bool a5i3)
+    int xPos, int yPos, const nft2_string_render_params_t* renderParams, u8* dst, u32 stride, bool a5i3)
 {
     int yOffset = glyph->spacingTop;
     u32 xStart = xPos < 0 ? -xPos : 0;
     u32 yStart = yPos + yOffset < 0 ? -(yPos + yOffset) : 0;
 
     int xEnd = glyph->glyphWidth;
-    if (xPos + xEnd > width)
+    if (xPos + xEnd > (int)renderParams->width)
     {
-        // by returning we only render complete glyphs
-        return;
-        // old code for rendering partial glyphs
-        // xEnd = width - xPos;
+        if (renderParams->onlyRenderWholeGlyphs)
+        {
+            return;
+        }
+
+        xEnd = renderParams->width - xPos;
     }
 
     int yEnd = glyph->glyphHeight;
-    if (yPos + yOffset + yEnd > height)
-        yEnd = height - (yPos + yOffset); // allow partial glyphs in the vertical direction
+    if (yPos + yOffset + yEnd > (int)renderParams->height)
+    {
+        yEnd = renderParams->height - (yPos + yOffset); // allow partial glyphs in the vertical direction
+    }
 
     const u8* glyphData = &font->glyphDataPtr[glyph->dataOffset];
     glyphData += yStart * ((glyph->glyphWidth + 1) >> 1);
@@ -97,15 +101,15 @@ static inline void renderGlyph(const nft2_header_t* font, const nft2_glyph_t* gl
 }
 
 static ITCM_CODE void renderGlyphTiled(const nft2_header_t* font, const nft2_glyph_t* glyph,
-    int xPos, int yPos, int width, int height, u8* dst, u32 stride)
+    int xPos, int yPos, const nft2_string_render_params_t* renderParams, u8* dst, u32 stride)
 {
-    renderGlyph(font, glyph, xPos, yPos, width, height, dst, stride, false);
+    renderGlyph(font, glyph, xPos, yPos, renderParams, dst, stride, false);
 }
 
 static ITCM_CODE void renderGlyphA5I3(const nft2_header_t* font, const nft2_glyph_t* glyph,
-    int xPos, int yPos, int width, int height, u8* dst, u32 stride)
+    int xPos, int yPos, const nft2_string_render_params_t* renderParams, u8* dst, u32 stride)
 {
-    renderGlyph(font, glyph, xPos, yPos, width, height, dst, stride, true);
+    renderGlyph(font, glyph, xPos, yPos, renderParams, dst, stride, true);
 }
 
 ITCM_CODE void nft2_renderString(const nft2_header_t* font, const char16_t* string, u8* dst, u32 stride,
@@ -134,18 +138,18 @@ ITCM_CODE void nft2_renderString(const nft2_header_t* font, const char16_t* stri
         xPos += glyph->spacingLeft;
         if (a5i3)
         {
-            renderGlyphA5I3(font, glyph, xPos, yPos, renderParams->width, renderParams->height, dst, stride);
+            renderGlyphA5I3(font, glyph, xPos, yPos, renderParams, dst, stride);
         }
         else
         {
-            renderGlyphTiled(font, glyph, xPos, yPos, renderParams->width, renderParams->height, dst, stride);
+            renderGlyphTiled(font, glyph, xPos, yPos, renderParams, dst, stride);
         }
         xPos += glyph->glyphWidth;
         if (xPos > (int)textWidth)
             textWidth = xPos;
         xPos += glyph->spacingRight;
     }
-    renderParams->textWidth = textWidth;
+    renderParams->textWidth = textWidth - renderParams->x;
 }
 
 ITCM_CODE void nft2_measureString(const nft2_header_t* font, const char16_t* string, u32& width, u32& height)
@@ -265,11 +269,11 @@ ITCM_CODE void nft2_renderStringEllipsis(const nft2_header_t* font, const char16
         xPos += glyph->spacingLeft;
         if (a5i3)
         {
-            renderGlyphA5I3(font, glyph, xPos, yPos, renderParams->width, renderParams->height, dst, stride);
+            renderGlyphA5I3(font, glyph, xPos, yPos, renderParams, dst, stride);
         }
         else
         {
-            renderGlyphTiled(font, glyph, xPos, yPos, renderParams->width, renderParams->height, dst, stride);
+            renderGlyphTiled(font, glyph, xPos, yPos, renderParams, dst, stride);
         }
         xPos += glyph->glyphWidth;
         if (xPos > (int)textWidth)
@@ -287,11 +291,11 @@ ITCM_CODE void nft2_renderStringEllipsis(const nft2_header_t* font, const char16
         xPos += glyph->spacingLeft;
         if (a5i3)
         {
-            renderGlyphA5I3(font, glyph, xPos, yPos, renderParams->width, renderParams->height, dst, stride);
+            renderGlyphA5I3(font, glyph, xPos, yPos, renderParams, dst, stride);
         }
         else
         {
-            renderGlyphTiled(font, glyph, xPos, yPos, renderParams->width, renderParams->height, dst, stride);
+            renderGlyphTiled(font, glyph, xPos, yPos, renderParams, dst, stride);
         }
         xPos += glyph->glyphWidth;
         if (xPos > (int)textWidth)
@@ -309,16 +313,16 @@ ITCM_CODE void nft2_renderStringEllipsis(const nft2_header_t* font, const char16
         xPos += glyph->spacingLeft;
         if (a5i3)
         {
-            renderGlyphA5I3(font, glyph, xPos, yPos, renderParams->width, renderParams->height, dst, stride);
+            renderGlyphA5I3(font, glyph, xPos, yPos, renderParams, dst, stride);
         }
         else
         {
-            renderGlyphTiled(font, glyph, xPos, yPos, renderParams->width, renderParams->height, dst, stride);
+            renderGlyphTiled(font, glyph, xPos, yPos, renderParams, dst, stride);
         }
         xPos += glyph->glyphWidth;
         if (xPos > (int)textWidth)
             textWidth = xPos;
         xPos += glyph->spacingRight;
     }
-    renderParams->textWidth = textWidth;
+    renderParams->textWidth = textWidth - renderParams->x;
 }

arm9/source/gui/font/nitroFont2.h

@@ -39,6 +39,7 @@ struct nft2_string_render_params_t
     u32 textWidth;
     // u32 textHeight;
     bool a5i3;
+    bool onlyRenderWholeGlyphs = true;
 };
 
 /// @brief Prepares the ntf2 data of the given \p font for runtime use.

arm9/source/gui/input/IKeyInputSource.h

@@ -2,10 +2,10 @@
 #include "InputKey.h"
 
 /// @brief Interface for a source of key input.
-class IInputSource
+class IKeyInputSource
 {
 public:
-    virtual ~IInputSource() { }
+    virtual ~IKeyInputSource() { }
 
     virtual InputKey Sample() const = 0;
 };

arm9/source/gui/input/ITouchInputSource.h

@@ -0,0 +1,14 @@
+#pragma once
+#include "core/math/Point.h"
+
+/// @brief Interface for a source of touch input.
+class ITouchInputSource
+{
+public:
+    virtual ~ITouchInputSource() { }
+
+    /// @brief Samples the touch input.
+    /// @param touchPosition When the pen is down, the current touch position.
+    /// @return \c true when the pen is down, or \c false otherwise.
+    virtual bool Sample(Point& touchPosition) const = 0;
+};

arm9/source/gui/input/InputKey.h

@@ -15,7 +15,9 @@ enum class InputKey : u16
     L         = 1 << 9,
     X         = 1 << 10,
     Y         = 1 << 11,
-    Debug     = 1 << 13
+    Debug     = 1 << 13,
+    Touch     = 1 << 14,
+    Lid       = 1 << 15
 };
 
 inline InputKey operator&(InputKey lhs, InputKey rhs)

arm9/source/gui/input/InputProvider.h

@@ -1,5 +1,5 @@
 #pragma once
-
+#include "core/math/Point.h"
 #include "InputKey.h"
 
 class InputProvider
@@ -14,6 +14,23 @@ public:
     /// @return \c true if any of the keys in the \p mask is being held, or \c false otherwise.
     bool Current(InputKey mask) const { return static_cast<bool>(_currentKeys & mask); }
 
+    /// @brief Returns the current touch point if the screen is being touched.
+    /// @param touchPoint The current touch point if the screen is being touched.
+    /// @return \c true if the screen is being touched, or \c false otherwise.
+    bool GetCurrentTouchPoint(Point& touchPoint)
+    {
+        if (Current(InputKey::Touch))
+        {
+            touchPoint = _currentTouchPoint;
+            return true;
+        }
+        else
+        {
+            touchPoint = Point(0, 0);
+            return false;
+        }
+    }
+
     /// @brief Returns a bitmask of the keys that went from unpressed to pressed in the latest update.
     /// @return A bitmask of the keys that went from unpressed to pressed in the latest update.
     InputKey GetTriggeredKeys() const
@@ -46,13 +63,16 @@ public:
         _currentKeys = InputKey::None;
         _triggeredKeys = InputKey::None;
         _releasedKeys = InputKey::None;
+        _currentTouchPoint = Point(0, 0);
     }
 
 protected:
     InputKey _currentKeys;
     InputKey _triggeredKeys;
     InputKey _releasedKeys;
+    Point _currentTouchPoint;
 
     InputProvider()
-        : _currentKeys(InputKey::None), _triggeredKeys(InputKey::None), _releasedKeys(InputKey::None) { }
+        : _currentKeys(InputKey::None), _triggeredKeys(InputKey::None), _releasedKeys(InputKey::None)
+        , _currentTouchPoint(0, 0) { }
 };

arm9/source/gui/input/InputRepeater.cpp

@@ -27,7 +27,9 @@ void InputRepeater::Update()
             }
         }
         else
+        {
             _state = State::Idle;
+        }
     }
     else if (_state == State::NextRepeat)
     {
@@ -40,13 +42,24 @@ void InputRepeater::Update()
             }
         }
         else
+        {
             _state = State::Idle;
+        }
     }
 
     InputKey lastRepKeys = _currentKeys & _repeatMask;
     _currentKeys = curKeys | repKeys;
     _triggeredKeys = _inputProvider->GetTriggeredKeys() | repKeys;
     _releasedKeys = _inputProvider->GetReleasedKeys() | (lastRepKeys & (lastRepKeys ^ repKeys));
+    Point touchPoint;
+    if (_inputProvider->GetCurrentTouchPoint(touchPoint))
+    {
+        _currentTouchPoint = touchPoint;
+    }
+    else
+    {
+        _currentTouchPoint = Point(0, 0);
+    }
 }
 
 void InputRepeater::Reset()

arm9/source/gui/input/InputRepeater.h

@@ -7,7 +7,7 @@ class InputRepeater : public InputProvider
 public:
     InputRepeater(InputProvider* inputProvider, InputKey repeatMask, u16 firstRepeatDelay, u16 nextRepeatDelay)
         : _inputProvider(inputProvider), _state(State::Idle)
-        , _frameCounter(0), _repeatMask(repeatMask)
+        , _frameCounter(0), _repeatMask(repeatMask & ~InputKey::Touch)
         , _firstRepeatDelayFrames(firstRepeatDelay)
         , _nextRepeatDelayFrames(nextRepeatDelay) { }
 

arm9/source/gui/input/PadInputSource.h

@@ -1,17 +1,18 @@
 #pragma once
 #include "common.h"
 #include <nds/input.h>
-#include "IInputSource.h"
+#include "IKeyInputSource.h"
 #include "sharedMemory.h"
 
 /// @brief Input source from the physical DS buttons.
-class PadInputSource : public IInputSource
+class PadInputSource : public IKeyInputSource
 {
 public:
     InputKey Sample() const override
     {
         u16 arm9Mask = (~REG_KEYINPUT & 0x3FF);
-        u16 arm7Mask = (~SHARED_KEY_XY & 0xB);
+        u16 arm7Mask = (~SHARED_KEY_XY & 0xCB);
+        arm7Mask = (arm7Mask & 0xB) | ((arm7Mask & 0xC0) >> 2);
         return static_cast<InputKey>((arm9Mask | (arm7Mask << 10)));
     }
 };

arm9/source/gui/input/SampledInputProvider.cpp

@@ -7,16 +7,44 @@ void SampledInputProvider::Update()
     InputKey trig = InputKey::None;
     InputKey rel = InputKey::None;
 
+    Point touchPoint(0, 0);
+    int touchPointCount = 0;
     while (_inputBufferReadPtr != _inputBufferWritePtr)
     {
-        InputKey nextKeys = _inputBuffer[_inputBufferReadPtr];
+        InputKey nextKeys = _keyInputBuffer[_inputBufferReadPtr];
         trig |= (nextKeys ^ curKeys) & nextKeys;
         rel |= (nextKeys ^ curKeys) & curKeys;
         curKeys = nextKeys;
+        if ((nextKeys & InputKey::Touch) != InputKey::None)
+        {
+            touchPoint.x += _touchInputBuffer[_inputBufferReadPtr].x;
+            touchPoint.y += _touchInputBuffer[_inputBufferReadPtr].y;
+            touchPointCount++;
+        }
+        else
+        {
+            touchPoint = Point(0, 0);
+            touchPointCount = 0;
+        }
         _inputBufferReadPtr = (_inputBufferReadPtr + 1) & 3;
     }
 
     _triggeredKeys = trig;
     _releasedKeys = rel;
     _currentKeys = curKeys;
+    if (touchPointCount == 0)
+    {
+        if ((_triggeredKeys & InputKey::Touch) != InputKey::None ||
+            (_currentKeys & InputKey::Touch) != InputKey::None)
+        {
+            _releasedKeys = _releasedKeys | InputKey::Touch;
+        }
+        _triggeredKeys = _triggeredKeys & ~InputKey::Touch;
+        _currentKeys = _currentKeys & ~InputKey::Touch;
+    }
+    else
+    {
+        _currentTouchPoint.x = touchPoint.x / touchPointCount;
+        _currentTouchPoint.y = touchPoint.y / touchPointCount;
+    }
 }

arm9/source/gui/input/SampledInputProvider.h

@@ -1,20 +1,23 @@
 #pragma once
 #include "InputProvider.h"
-#include "IInputSource.h"
+#include "IKeyInputSource.h"
+#include "ITouchInputSource.h"
 
-/// @brief Input provider providing input from an \see IInputSource.
+/// @brief Input provider providing input from an \see IKeyInputSource.
 class SampledInputProvider : public InputProvider
 {
 public:
-    explicit SampledInputProvider(const IInputSource* inputSource)
-        : _inputSource(inputSource), _inputBufferReadPtr(0), _inputBufferWritePtr(0) { }
+    explicit SampledInputProvider(const IKeyInputSource* keyInputSource, const ITouchInputSource* touchInputSource)
+        : _keyInputSource(keyInputSource), _touchInputSource(touchInputSource)
+        , _inputBufferReadPtr(0), _inputBufferWritePtr(0) { }
 
     void Update() override;
 
     /// @brief Samples the input source.
     void Sample()
     {
-        _inputBuffer[_inputBufferWritePtr] = _inputSource->Sample();
+        _keyInputBuffer[_inputBufferWritePtr] = _keyInputSource->Sample();
+        _touchInputSource->Sample(_touchInputBuffer[_inputBufferWritePtr]);
         _inputBufferWritePtr = (_inputBufferWritePtr + 1) & 3;
     }
 
@@ -26,9 +29,11 @@ public:
     }
 
 private:
-    const IInputSource* _inputSource;
+    const IKeyInputSource* _keyInputSource;
+    const ITouchInputSource* _touchInputSource;
 
-    InputKey _inputBuffer[4];
+    InputKey _keyInputBuffer[4];
+    Point _touchInputBuffer[4];
     u8 _inputBufferReadPtr;
     u8 _inputBufferWritePtr;
 };

arm9/source/gui/input/TouchInputSource.h

@@ -0,0 +1,24 @@
+#pragma once
+#include "common.h"
+#include <nds/input.h>
+#include "ITouchInputSource.h"
+#include "sharedMemory.h"
+
+/// @brief Input source from the physical DS touch screen.
+class TouchInputSource : public ITouchInputSource
+{
+public:
+    bool Sample(Point& touchPosition) const override
+    {
+        if (SHARED_KEY_XY & (1 << 6))
+        {
+            touchPosition = Point(0, 0);
+            return false;
+        }
+        else
+        {
+            touchPosition = Point(SHARED_TOUCH_X, SHARED_TOUCH_Y);
+            return true;
+        }
+    }
+};

arm9/source/gui/views/Label2DView.h

@@ -3,15 +3,17 @@
 
 class Label2DView : public LabelView
 {
-public:
-    Label2DView(u32 width, u32 height, u32 maxStringLength, const nft2_header_t* font)
-        : LabelView(width, height, maxStringLength, font, false) { }
+    SHARED_ONLY(Label2DView)
 
+public:
     void InitVram(const VramContext& vramContext) override;
     void Draw(GraphicsContext& graphicsContext) override;
     void VBlank() override;
 
 private:
+    Label2DView(u32 width, u32 height, u32 maxStringLength, const nft2_header_t* font)
+        : LabelView(width, height, maxStringLength, font, false) { }
+
     void UpdateTileBuffer() override;
 
     bool _tileBufferUpdated = false;

arm9/source/gui/views/Label3DView.cpp

@@ -12,6 +12,11 @@ Label3DView::Label3DView(u32 width, u32 height, u32 maxStringLength, const nft2_
     : LabelView(width, height, maxStringLength, font, true)
     , _vblankTextureLoader(vblankTextureLoader) { }
 
+Label3DView::~Label3DView()
+{
+    _vblankTextureLoader->CancelLoad(_textureLoadRequest);
+}
+
 void Label3DView::InitVram(const VramContext& vramContext)
 {
     const auto texVramManager = vramContext.GetTexVramManager();

arm9/source/gui/views/Label3DView.h

@@ -4,14 +4,18 @@
 
 class alignas(32) Label3DView : public LabelView
 {
+    SHARED_ONLY(Label3DView)
+
 public:
-    Label3DView(u32 width, u32 height, u32 maxStringLength, const nft2_header_t* font,
-        VBlankTextureLoader* vblankTextureLoader);
+    ~Label3DView() override;
 
     void InitVram(const VramContext& vramContext) override;
     void Draw(GraphicsContext& graphicsContext) override;
 
 private:
+    Label3DView(u32 width, u32 height, u32 maxStringLength, const nft2_header_t* font,
+        VBlankTextureLoader* vblankTextureLoader);
+
     void UpdateTileBuffer() override;
 
     u32 _texVramOffset = 0;

arm9/source/gui/views/LabelView.cpp

@@ -9,6 +9,10 @@
 #include "gui/palette/GradientPalette.h"
 #include "LabelView.h"
 
+#define MARQUEE_START_FRAMES    60
+#define MARQUEE_STEP_FRAMES     3
+#define MARQUEE_END_FRAMES      90
+
 LabelView::LabelView(u32 width, u32 height, u32 maxStringLength, const nft2_header_t* font, bool a5i3)
     : _width(width), _height(height)
     , _maxStringLength(maxStringLength), _font(font)
@@ -34,14 +38,30 @@ LabelView::LabelView(u32 width, u32 height, u32 maxStringLength, const nft2_head
     SetText(u"");
 }
 
+void LabelView::Update()
+{
+    if (_ellipsisStyleChanged)
+    {
+        RestartMarquee();
+        UpdateTileBuffer();
+        _ellipsisStyleChanged = false;
+    }
+    else if (_ellipsisStyle == EllipsisStyle::Marquee)
+    {
+        UpdateMarquee();
+    }
+}
+
 void LabelView::SetTextBuffer(const char* text)
 {
     StringUtil::Copy(_textBuffer.get(), text, _maxStringLength + 1);
+    RestartMarquee();
 }
 
 void LabelView::SetTextBuffer(const char16_t* text)
 {
     StringUtil::Copy(_textBuffer.get(), text, _maxStringLength + 1);
+    RestartMarquee();
 }
 
 void LabelView::SetTextBuffer(const char16_t* text, u32 length)
@@ -50,6 +70,7 @@ void LabelView::SetTextBuffer(const char16_t* text, u32 length)
     if (copyLength > 0)
         memcpy(_textBuffer.get(), text, copyLength * 2);
     _textBuffer[copyLength] = 0;
+    RestartMarquee();
 }
 
 void LabelView::UpdateTileBuffer()
@@ -63,10 +84,19 @@ void LabelView::UpdateTileBuffer()
         renderParams.width = _width;
         renderParams.height = _height;
         renderParams.a5i3 = _a5i3;
-        if (_ellipsis)
+        if (_ellipsisStyle == EllipsisStyle::Ellipsis)
+        {
             nft2_renderStringEllipsis(_font, _textBuffer.get(), _tileBuffer.get(), _actualWidth, &renderParams, u" ... ");
+        }
         else
+        {
+            if (_ellipsisStyle == EllipsisStyle::Marquee)
+            {
+                renderParams.x = -_marqueeOffset;
+                renderParams.onlyRenderWholeGlyphs = false;
+            }
             nft2_renderString(_font, _textBuffer.get(), _tileBuffer.get(), _actualWidth, &renderParams);
+        }
         _newStringWidth = renderParams.textWidth;
     }
     else
@@ -119,3 +149,59 @@ QueueTask<void> LabelView::SetTextAsync(TaskQueueBase* taskQueue, const char16_t
     SetTextBuffer(text, length);
     return UpdateTileBufferAsync(taskQueue);
 }
+
+void LabelView::RestartMarquee()
+{
+    _marqueeOffset = 0;
+    _marqueeCounter = MARQUEE_START_FRAMES;
+    _marqueeState = MarqueeState::StartWait;
+}
+
+void LabelView::UpdateMarquee()
+{
+    UpdateTileBuffer();
+    if (_newStringWidth <= _width)
+    {
+        _marqueeOffset = 0;
+    }
+    else
+    {
+        switch (_marqueeState)
+        {
+            case MarqueeState::StartWait:
+            {
+                if (--_marqueeCounter <= 0)
+                {
+                    _marqueeState = MarqueeState::Moving;
+                    _marqueeOffset = 0;
+                    _marqueeCounter = MARQUEE_STEP_FRAMES;
+                }
+                break;
+            }
+            case MarqueeState::Moving:
+            {
+                if (--_marqueeCounter == 0)
+                {
+                    _marqueeCounter = MARQUEE_STEP_FRAMES;
+                    _marqueeOffset++;
+                    if (_newStringWidth - _marqueeOffset < _width)
+                    {
+                        _marqueeState = MarqueeState::EndWait;
+                        _marqueeCounter = MARQUEE_END_FRAMES;
+                    }
+                }
+                break;
+            }
+            case MarqueeState::EndWait:
+            {
+                if (--_marqueeCounter <= 0)
+                {
+                    _marqueeState = MarqueeState::StartWait;
+                    _marqueeCounter = MARQUEE_START_FRAMES;
+                    _marqueeOffset = 0;
+                }
+                break;
+            }
+        }
+    }
+}

arm9/source/gui/views/LabelView.h

@@ -14,6 +14,15 @@ class MaterialGraphicsContext;
 class LabelView : public View
 {
 public:
+    enum class EllipsisStyle
+    {
+        None,
+        Ellipsis,
+        Marquee
+    };
+
+    void Update() override;
+
     void SetText(const char* text);
     void SetText(const char16_t* text);
     void SetText(const char16_t* text, u32 length);
@@ -43,7 +52,14 @@ public:
         return Rectangle(_position, _width, _height);
     }
 
-    void SetEllipsis(bool ellipsis) { _ellipsis = ellipsis; }
+    void SetEllipsisStyle(EllipsisStyle ellipsisStyle)
+    {
+        if (_ellipsisStyle != ellipsisStyle)
+        {
+            _ellipsisStyle = ellipsisStyle;
+            _ellipsisStyleChanged = true;
+        }
+    }
 
 protected:
     u32 _width;
@@ -61,14 +77,30 @@ protected:
     Rgb<8, 8, 8> _backgroundColor;
     Rgb<8, 8, 8> _foregroundColor;
     int _paletteRow = -1;
-    bool _ellipsis = false;
+    EllipsisStyle _ellipsisStyle = EllipsisStyle::None;
     bool _a5i3;
 
+    LabelView(u32 width, u32 height, u32 maxStringLength, const nft2_header_t* font, bool a5i3);
+
     void SetTextBuffer(const char* text);
     void SetTextBuffer(const char16_t* text);
     void SetTextBuffer(const char16_t* text, u32 length);
     virtual void UpdateTileBuffer();
     QueueTask<void> UpdateTileBufferAsync(TaskQueueBase* taskQueue);
 
-    LabelView(u32 width, u32 height, u32 maxStringLength, const nft2_header_t* font, bool a5i3);
+private:
+    enum class MarqueeState
+    {
+        StartWait,
+        Moving,
+        EndWait
+    };
+
+    MarqueeState _marqueeState = MarqueeState::StartWait;
+    int _marqueeOffset = 0;
+    int _marqueeCounter = 0;
+    bool _ellipsisStyleChanged = false;
+
+    void RestartMarquee();
+    void UpdateMarquee();
 };

arm9/source/gui/views/RecyclerAdapter.h

@@ -20,19 +20,15 @@ public:
 
     /// @brief Creates and returns a view for this adapter.
     /// @return The created view.
-    virtual View* CreateView() const = 0;
-
-    /// @brief Destroys a \p view for this adapter that was previously created with CreateView.
-    /// @param view The view to destroy.
-    virtual void DestroyView(View* view) const = 0;
+    virtual SharedPtr<View> CreateView() const = 0;
 
     /// @brief Binds the given \p view to the item at the given \p index.
     /// @param view The view to bind.
     /// @param index The item index to bind to.
-    virtual void BindView(View* view, int index) const = 0;
+    virtual void BindView(SharedPtr<View> view, int index) const = 0;
 
     /// @brief Releases a \p view that was previously bound with BindView, such that it can be reused.
     /// @param view The view to release.
     /// @param index The item index that was bound to the view.
-    virtual void ReleaseView(View* view, int index) const = 0;
+    virtual void ReleaseView(SharedPtr<View> view, int index) const = 0;
 };

arm9/source/gui/views/RecyclerView.cpp

@@ -20,27 +20,31 @@ RecyclerView::~RecyclerView()
 {
     if (_adapter)
     {
-        for (u32 i = 0; i < _viewPoolTotalCount; i++)
+        for (u32 i = _viewPoolFreeCount; i < _viewPoolTotalCount; i++)
         {
-            _adapter->DestroyView(_viewPool[i].view);
+            _adapter->ReleaseView(_viewPool[i].view, _viewPool[i].itemIdx);
         }
     }
 }
 
-void RecyclerView::SetAdapter(const RecyclerAdapter* adapter, int initialSelectedIndex)
+void RecyclerView::SetAdapter(SharedPtr<const RecyclerAdapter> adapter, int initialSelectedIndex)
 {
     if (_adapter)
     {
         _selectedItem = nullptr;
-        for (u32 i = 0; i < _viewPoolTotalCount; i++)
+        for (u32 i = _viewPoolFreeCount; i < _viewPoolTotalCount; i++)
         {
-            _adapter->DestroyView(_viewPool[i].view);
+            _adapter->ReleaseView(_viewPool[i].view, _viewPool[i].itemIdx);
         }
         _viewPool.reset();
         _viewPoolFreeCount = 0;
         _viewPoolTotalCount = 0;
+        _xOffset = 0;
+        _yOffset = 0;
+        _curRangeStart = 0;
+        _curRangeLength = 0;
     }
-    _adapter = adapter;
+    _adapter = std::move(adapter);
     _adapter->GetViewSize(_itemWidth, _itemHeight);
     _itemCount = _adapter->GetItemCount();
     if (_mode == Mode::HorizontalList || _mode == Mode::HorizontalGrid)
@@ -174,7 +178,7 @@ void RecyclerView::VBlank()
     }
 }
 
-View* RecyclerView::MoveFocus(View* currentFocus, FocusMoveDirection direction, View* source)
+SharedPtr<View> RecyclerView::MoveFocus(const SharedPtr<View>& currentFocus, FocusMoveDirection direction, View* source)
 {
     if (_itemCount == 0)
     {
@@ -191,9 +195,9 @@ View* RecyclerView::MoveFocus(View* currentFocus, FocusMoveDirection direction,
     }
 }
 
-View* RecyclerView::MoveFocusHorizontal(View* currentFocus, FocusMoveDirection direction, View* source)
+SharedPtr<View> RecyclerView::MoveFocusHorizontal(const SharedPtr<View>& currentFocus, FocusMoveDirection direction, View* source)
 {
-    if (!_selectedItem || currentFocus != _selectedItem->view)
+    if (!_selectedItem || currentFocus.GetPointer() != _selectedItem->view.GetPointer())
     {
         // incoming focus
         if (direction != FocusMoveDirection::Down)
@@ -203,7 +207,7 @@ View* RecyclerView::MoveFocusHorizontal(View* currentFocus, FocusMoveDirection d
 
         int idx = (-_xOffset + currentFocus->GetPosition().x - _xPadding + ((_xSpacing + _itemWidth) >> 1)) / (_xSpacing + _itemWidth) * _rows;
         SetSelectedItem(std::clamp(idx, 0, ((int)_itemCount - 1) / _rows * _rows));
-        return _selectedItem != nullptr ? _selectedItem->view : this;
+        return _selectedItem != nullptr ? _selectedItem->view : SharedFromThis();
     }
 
     int row = _selectedItem->itemIdx % _rows;
@@ -244,22 +248,28 @@ View* RecyclerView::MoveFocusHorizontal(View* currentFocus, FocusMoveDirection d
         SetSelectedItem(std::clamp(idx, 0, (int)_itemCount - 1));
     }
 
-    return _selectedItem != nullptr ? _selectedItem->view : this;
+    return _selectedItem != nullptr ? _selectedItem->view : SharedFromThis();
 }
 
-View* RecyclerView::MoveFocusVertical(View* currentFocus, FocusMoveDirection direction, View* source)
+SharedPtr<View> RecyclerView::MoveFocusVertical(const SharedPtr<View>& currentFocus, FocusMoveDirection direction, View* source)
 {
-    if (!_selectedItem || currentFocus != _selectedItem->view)
+    if (!_selectedItem || currentFocus.GetPointer() != _selectedItem->view.GetPointer())
     {
         // incoming focus
-        if (direction != FocusMoveDirection::Right)
+        if (direction == FocusMoveDirection::Right)
         {
-            return nullptr;
+            int idx = (-_yOffset + currentFocus->GetPosition().y - _yPadding + ((_ySpacing + _itemHeight) >> 1)) / (_ySpacing + _itemHeight) * _columns;
+            SetSelectedItem(std::clamp(idx, 0, ((int)_itemCount - 1) / _columns * _columns));
+            return _selectedItem != nullptr ? _selectedItem->view : SharedFromThis();
+        }
+        else if (direction == FocusMoveDirection::Down)
+        {
+            int idx = (-_xOffset + currentFocus->GetPosition().x - _xPadding + ((_xSpacing + _itemWidth) >> 1)) / (_xSpacing + _itemWidth);
+            SetSelectedItem(std::clamp(idx, 0, _columns - 1));
+            return _selectedItem != nullptr ? _selectedItem->view : SharedFromThis();
         }
 
-        int idx = (-_yOffset + currentFocus->GetPosition().y - _yPadding + ((_ySpacing + _itemHeight) >> 1)) / (_ySpacing + _itemHeight) * _columns;
-        SetSelectedItem(std::clamp(idx, 0, ((int)_itemCount - 1) / _columns * _columns));
-        return _selectedItem != nullptr ? _selectedItem->view : this;
+        return nullptr;
     }
 
     int column = _selectedItem->itemIdx % _columns;
@@ -300,12 +310,12 @@ View* RecyclerView::MoveFocusVertical(View* currentFocus, FocusMoveDirection dir
         SetSelectedItem(std::clamp(idx, 0, (int)_itemCount - 1));
     }
 
-    return _selectedItem != nullptr ? _selectedItem->view : this;
+    return _selectedItem != nullptr ? _selectedItem->view : SharedFromThis();
 }
 
 bool RecyclerView::HandleInput(const InputProvider& inputProvider, FocusManager& focusManager)
 {
-    if (inputProvider.Triggered(InputKey::L | InputKey::R))
+    if (_itemCount != 0 && inputProvider.Triggered(InputKey::L | InputKey::R))
     {
         int direction = inputProvider.Triggered(InputKey::L) ? 1 : -1;
         int selected = _selectedItem->itemIdx;
@@ -337,6 +347,117 @@ bool RecyclerView::HandleInput(const InputProvider& inputProvider, FocusManager&
     return View::HandleInput(inputProvider, focusManager);
 }
 
+void RecyclerView::HandlePenDown(const Point& touchPoint, FocusManager& focusManager)
+{
+    if (GetBounds().Contains(touchPoint))
+    {
+        _penDown = true;
+        _penDownPosition = touchPoint;
+        _hasScrollStarted = false;
+        _penDownScrollOffset = _scrollOffsetAnimator.GetValue();
+
+        for (u32 i = _viewPoolFreeCount; i < _viewPoolTotalCount; i++)
+        {
+            _viewPool[i].view->HandlePenDown(touchPoint, focusManager);
+        }
+    }
+}
+
+void RecyclerView::HandlePenMove(const Point& touchPoint, FocusManager& focusManager)
+{
+    if (!_penDown)
+    {
+        return;
+    }
+
+    if (!_hasScrollStarted)
+    {
+        for (u32 i = _viewPoolFreeCount; i < _viewPoolTotalCount; i++)
+        {
+            _viewPool[i].view->HandlePenMove(touchPoint, focusManager);
+            if (focusManager.GetCurrentFocus().GetPointer() == _viewPool[i].view.GetPointer())
+            {
+                SetSelectedItem(_viewPool[i].itemIdx);
+            }
+        }
+
+        int dx = touchPoint.x - _penDownPosition.x;
+        int dy = touchPoint.y - _penDownPosition.y;
+        if (dx * dx + dy * dy > 7 * 7)
+        {
+            bool shouldScrollStart = (_mode == Mode::HorizontalGrid || _mode == Mode::HorizontalList)
+                ? (std::abs(touchPoint.x - _penDownPosition.x) > std::abs(touchPoint.y - _penDownPosition.y))
+                : (std::abs(touchPoint.x - _penDownPosition.x) < std::abs(touchPoint.y - _penDownPosition.y));
+
+            if (shouldScrollStart)
+            {
+                _hasScrollStarted = true;
+            }
+            else
+            {
+                _penDown = false; //wrong direction drag, so cancel it
+            }
+
+            for (u32 i = _viewPoolFreeCount; i < _viewPoolTotalCount; i++)
+            {
+                _viewPool[i].view->HandlePenUp(Point(-1, -1), focusManager);
+            }
+        }
+    }
+    else
+    {
+        int newScrollOffset;
+        if (_mode == Mode::HorizontalGrid || _mode == Mode::HorizontalList)
+        {
+            newScrollOffset = _penDownScrollOffset + touchPoint.x - _penDownPosition.x;
+            if (-newScrollOffset < 0)
+            {
+                newScrollOffset = 0;
+                _penDownScrollOffset = 0;
+                _penDownPosition.x = touchPoint.x;
+            }
+            else if (newScrollOffset < GetMaxScrollOffset())
+            {
+                newScrollOffset = GetMaxScrollOffset();
+                _penDownScrollOffset = newScrollOffset;
+                _penDownPosition.x = touchPoint.x;
+            }
+        }
+        else
+        {
+            newScrollOffset = _penDownScrollOffset + touchPoint.y - _penDownPosition.y;
+            if (-newScrollOffset < 0)
+            {
+                newScrollOffset = 0;
+                _penDownScrollOffset = 0;
+                _penDownPosition.y = touchPoint.y;
+            }
+            else if (newScrollOffset < GetMaxScrollOffset())
+            {
+                newScrollOffset = GetMaxScrollOffset();
+                _penDownScrollOffset = newScrollOffset;
+                _penDownPosition.y = touchPoint.y;
+            }
+        }
+
+        SetScrollOffset(newScrollOffset, false);
+    }
+}
+
+void RecyclerView::HandlePenUp(const Point& lastTouchPoint, FocusManager& focusManager)
+{
+    for (u32 i = _viewPoolFreeCount; i < _viewPoolTotalCount; i++)
+    {
+        _viewPool[i].view->HandlePenUp(lastTouchPoint, focusManager);
+        if (focusManager.GetCurrentFocus().GetPointer() == _viewPool[i].view.GetPointer())
+        {
+            SetSelectedItem(_viewPool[i].itemIdx);
+        }
+    }
+
+    _penDown = false;
+}
+
 Point RecyclerView::GetItemPosition(int itemIdx)
 {
     int x = 0;

arm9/source/gui/views/RecyclerView.h

@@ -8,6 +8,8 @@
 
 class RecyclerView : public RecyclerViewBase
 {
+    SHARED_ONLY(RecyclerView)
+
 public:
     enum class Mode
     {
@@ -21,10 +23,9 @@ public:
         VerticalGrid
     };
 
-    RecyclerView(int x, int y, int width, int height, Mode mode);
     ~RecyclerView();
 
-    void SetAdapter(const RecyclerAdapter* adapter, int initialSelectedIndex = 0) override;
+    void SetAdapter(SharedPtr<const RecyclerAdapter> adapter, int initialSelectedIndex = 0) override;
     void InitVram(const VramContext& vramContext) override;
     void Update() override;
     void Draw(GraphicsContext& graphicsContext) override;
@@ -35,16 +36,23 @@ public:
         return Rectangle(_position, _width, _height);
     }
 
-    View* MoveFocus(View* currentFocus, FocusMoveDirection direction, View* source) override;
+    SharedPtr<View> MoveFocus(const SharedPtr<View>& currentFocus, FocusMoveDirection direction, View* source) override;
 
     bool HandleInput(const InputProvider& inputProvider, FocusManager& focusManager) override;
+    void HandlePenDown(const Point& touchPoint, FocusManager& focusManager) override;
+    void HandlePenMove(const Point& touchPoint, FocusManager& focusManager) override;
+    void HandlePenUp(const Point& lastTouchPoint, FocusManager& focusManager) override;
 
     void Focus(FocusManager& focusManager) override
     {
         if (_selectedItem)
+        {
             focusManager.Focus(_selectedItem->view);
+        }
         else
-            focusManager.Focus(this);
+        {
+            focusManager.Focus(SharedFromThis());
+        }
     }
 
     int GetSelectedItem() const override
@@ -69,7 +77,7 @@ public:
 private:
     struct ViewPoolEntry
     {
-        View* view;
+        SharedPtr<View> view;
         int itemIdx;
     };
 
@@ -94,6 +102,12 @@ private:
     int _curRangeStart;
     int _curRangeLength;
     Animator<int> _scrollOffsetAnimator;
+    bool _penDown = false;
+    Point _penDownPosition = Point(0, 0);
+    bool _hasScrollStarted = false;
+    int _penDownScrollOffset = 0;
+
+    RecyclerView(int x, int y, int width, int height, Mode mode);
 
     void UpdatePosition(ViewPoolEntry& viewPoolEntry);
     ViewPoolEntry* GetViewPoolEntryByItemIndex(int itemIdx);
@@ -107,6 +121,6 @@ private:
     void EnsureVisible(int itemIdx, bool animate);
     Point GetItemPosition(int itemIdx);
 
-    View* MoveFocusHorizontal(View* currentFocus, FocusMoveDirection direction, View* source);
-    View* MoveFocusVertical(View* currentFocus, FocusMoveDirection direction, View* source);
+    SharedPtr<View> MoveFocusHorizontal(const SharedPtr<View>& currentFocus, FocusMoveDirection direction, View* source);
+    SharedPtr<View> MoveFocusVertical(const SharedPtr<View>& currentFocus, FocusMoveDirection direction, View* source);
 };

arm9/source/gui/views/RecyclerViewBase.h

@@ -2,16 +2,17 @@
 #include "View.h"
 #include "RecyclerAdapter.h"
 #include "gui/FocusManager.h"
+#include "core/SharedPtr.h"
 
 /// @brief Abstract base class for a recycler view that displays a possibly large collection of items
 ///        provided by an adapter in an efficient way.
 class RecyclerViewBase : public View
 {
 public:
-    virtual void SetAdapter(const RecyclerAdapter* adapter, int initialSelectedIndex = 0) = 0;
+    virtual void SetAdapter(SharedPtr<const RecyclerAdapter> adapter, int initialSelectedIndex = 0) = 0;
     virtual void Focus(FocusManager& focusManager) = 0;
     virtual int GetSelectedItem() const = 0;
 
 protected:
-    const RecyclerAdapter* _adapter = nullptr;
+    SharedPtr<const RecyclerAdapter> _adapter;
 };

arm9/source/gui/views/View.h

@@ -2,6 +2,8 @@
 #include "core/LinkedListLink.h"
 #include "core/math/Point.h"
 #include "core/math/Rectangle.h"
+#include "core/SharedPtr.h"
+#include "core/EnableSharedFromThis.h"
 #include "../FocusManager.h"
 #include "../FocusMoveDirection.h"
 
@@ -10,7 +12,7 @@ class VramContext;
 class InputProvider;
 
 /// @brief Base class for views.
-class View
+class View : public EnableSharedFromThis<View>
 {
 public:
     /// @brief Link used for views that contain other views.
@@ -37,7 +39,7 @@ public:
     /// @param direction The direction to move the focus in.
     /// @param source The view that requested this view to move focus.
     /// @return The newly focused view, or null if the focus didn't change.
-    virtual View* MoveFocus(View* currentFocus, FocusMoveDirection direction, View* source)
+    virtual SharedPtr<View> MoveFocus(const SharedPtr<View>& currentFocus, FocusMoveDirection direction, View* source)
     {
         if (_parent && _parent != source)
             return _parent->MoveFocus(currentFocus, direction, this);
@@ -57,6 +59,21 @@ public:
         return false;
     }
 
+    /// @brief Handles a pen down event.
+    /// @param touchPoint The touch point.
+    /// @param focusManager The focus manager.
+    virtual void HandlePenDown(const Point& touchPoint, FocusManager& focusManager) { }
+
+    /// @brief Handles a pen move event.
+    /// @param touchPoint The touch point.
+    /// @param focusManager The focus manager.
+    virtual void HandlePenMove(const Point& touchPoint, FocusManager& focusManager) { }
+
+    /// @brief Handles a pen up event.
+    /// @param lastTouchPoint The last touch point.
+    /// @param focusManager The focus manager.
+    virtual void HandlePenUp(const Point& lastTouchPoint, FocusManager& focusManager) { }
+
     /// @brief Gets the bounds of the view.
     /// @return The bounds of the view.
     virtual Rectangle GetBounds() const = 0;

arm9/source/gui/views/ViewContainer.cpp

@@ -0,0 +1,58 @@
+#include "common.h"
+#include "ViewContainer.h"
+
+void ViewContainer::InitVram(const VramContext& vramContext)
+{
+    for (auto& view : _children)
+    {
+        view.InitVram(vramContext);
+    }
+}
+
+void ViewContainer::Update()
+{
+    for (auto& view : _children)
+    {
+        view.Update();
+    }
+}
+
+void ViewContainer::Draw(GraphicsContext& graphicsContext)
+{
+    for (auto& view : _children)
+    {
+        view.Draw(graphicsContext);
+    }
+}
+
+void ViewContainer::VBlank()
+{
+    for (auto& view : _children)
+    {
+        view.VBlank();
+    }
+}
+
+void ViewContainer::HandlePenDown(const Point& touchPoint, FocusManager& focusManager)
+{
+    for (auto& view : _children)
+    {
+        view.HandlePenDown(touchPoint, focusManager);
+    }
+}
+
+void ViewContainer::HandlePenMove(const Point& touchPoint, FocusManager& focusManager)
+{
+    for (auto& view : _children)
+    {
+        view.HandlePenMove(touchPoint, focusManager);
+    }
+}
+
+void ViewContainer::HandlePenUp(const Point& lastTouchPoint, FocusManager& focusManager)
+{
+    for (auto& view : _children)
+    {
+        view.HandlePenUp(lastTouchPoint, focusManager);
+    }
+}

arm9/source/gui/views/ViewContainer.h

@@ -6,37 +6,13 @@
 class ViewContainer : public View
 {
 public:
-    void InitVram(const VramContext& vramContext) override
-    {
-        for (auto& view : _children)
-        {
-            view.InitVram(vramContext);
-        }
-    }
-
-    void Update() override
-    {
-        for (auto& view : _children)
-        {
-            view.Update();
-        }
-    }
-
-    void Draw(GraphicsContext& graphicsContext) override
-    {
-        for (auto& view : _children)
-        {
-            view.Draw(graphicsContext);
-        }
-    }
-
-    void VBlank() override
-    {
-        for (auto& view : _children)
-        {
-            view.VBlank();
-        }
-    }
+    void InitVram(const VramContext& vramContext) override;
+    void Update() override;
+    void Draw(GraphicsContext& graphicsContext) override;
+    void VBlank() override;
+    void HandlePenDown(const Point& touchPoint, FocusManager& focusManager) override;
+    void HandlePenMove(const Point& touchPoint, FocusManager& focusManager) override;
+    void HandlePenUp(const Point& lastTouchPoint, FocusManager& focusManager) override;
 
 protected:
     /// @brief Adds a child to the head of the list.
@@ -55,6 +31,14 @@ protected:
         view->SetParent(this);
     }
 
+    /// @brief Removes a child from the list.
+    /// @param view The child to remove.
+    void RemoveChild(View* view)
+    {
+        _children.Remove(view);
+        view->SetParent(nullptr);
+    }
+
 private:
     LinkedList<View, &View::listLink> _children;
 };

arm9/source/main.cpp

@@ -167,6 +167,11 @@ int main(int argc, char* argv[])
 
     rtc_init();
 
+    if (argc >= 1)
+    {
+        pload_setLauncherPath(argv[0]);
+    }
+
     memset(&gFatFs, 0, sizeof(gFatFs));
     if (dldi_init())
     {

arm9/source/picoLoaderBootstrap.cpp

@@ -10,6 +10,7 @@
 #include <libtwl/ipc/ipcFifoSystem.h>
 #include "ipcChannels.h"
 #include "fat/File.h"
+#include "core/StringUtil.h"
 #include "picoLoaderBootstrap.h"
 
 #define PICO_LOADER_9_PATH    "/_pico/picoLoader9.bin"
@@ -18,7 +19,9 @@
 typedef void (*pico_loader_9_func_t)(void);
 
 static pload_params_t sLoadParams;
+static char sLauncherPath[256] alignas(32);
 static PicoLoaderBootDrive sBootDrive;
+static const pload_cheats_t* sCheatData = nullptr;
 
 pload_params_t* pload_getLoadParams()
 {
@@ -30,6 +33,16 @@ void pload_setBootDrive(PicoLoaderBootDrive bootDrive)
     sBootDrive = bootDrive;
 }
 
+void pload_setLauncherPath(const char* launcherPath)
+{
+    StringUtil::Copy(sLauncherPath, launcherPath, sizeof(sLauncherPath));
+}
+
+void pload_setCheatData(const pload_cheats_t* cheatData)
+{
+    sCheatData = cheatData;
+}
+
 void pload_start()
 {
     mem_setVramAMapping(MEM_VRAM_AB_LCDC);
@@ -78,8 +91,17 @@ void pload_start()
     DC_InvalidateAll();
     IC_InvalidateAll();
 
-    ((pload_header7_t*)0x06840000)->bootDrive = sBootDrive;
-    dma_ntrCopy16(3, &sLoadParams, &((pload_header7_t*)0x06840000)->loadParams, sizeof(pload_params_t));
+    auto header = (pload_header7_t*)0x06840000;
+    header->bootDrive = sBootDrive;
+    dma_ntrCopy16(3, &sLoadParams, &header->loadParams, sizeof(pload_params_t));
+    if (header->apiVersion >= 2)
+    {
+        dma_ntrCopy16(3, &sLauncherPath, &header->v2.launcherPath, sizeof(header->v2.launcherPath));
+    }
+    if (header->apiVersion >= 3)
+    {
+        header->v3.cheats = sCheatData;
+    }
     mem_setVramCMapping(MEM_VRAM_C_ARM7_00000);
     mem_setVramDMapping(MEM_VRAM_D_ARM7_20000);
     ipc_sendFifoMessage(IPC_CHANNEL_LOADER, 1);

arm9/source/picoLoaderBootstrap.h

@@ -3,4 +3,6 @@
 
 pload_params_t* pload_getLoadParams();
 void pload_setBootDrive(PicoLoaderBootDrive bootDrive);
+void pload_setLauncherPath(const char* launcherPath);
+void pload_setCheatData(const pload_cheats_t* cheatData);
 void pload_start();

arm9/source/romBrowser/DisplayMode/BannerListFileRecyclerAdapter.cpp

@@ -3,6 +3,7 @@
 #include "core/task/TaskQueue.h"
 #include "../views/BannerListItemView.h"
 #include "../Theme/IRomBrowserViewFactory.h"
+#include "romBrowser/viewModels/RomBrowserItemViewModel.h"
 #include "BannerListFileRecyclerAdapter.h"
 
 void BannerListFileRecyclerAdapter::GetViewSize(int& width, int& height) const
@@ -11,27 +12,24 @@ void BannerListFileRecyclerAdapter::GetViewSize(int& width, int& height) const
     height = 44;
 }
 
-View* BannerListFileRecyclerAdapter::CreateView() const
+SharedPtr<View> BannerListFileRecyclerAdapter::CreateView() const
 {
-    return _romBrowserViewFactory->CreateBannerListItemView(_vblankTextureLoader);
+    return _romBrowserViewFactory->CreateBannerListItemView(
+        std::make_unique<RomBrowserItemViewModel>(_romBrowserController), _vblankTextureLoader);
 }
 
-void BannerListFileRecyclerAdapter::DestroyView(View* view) const
+void BannerListFileRecyclerAdapter::BindView(SharedPtr<View> view, int index) const
 {
-    delete static_cast<BannerListItemView*>(view);
-}
-
-void BannerListFileRecyclerAdapter::BindView(View* view, int index) const
-{
-    auto listItemView = static_cast<BannerListItemView*>(view);
+    auto listItemView = static_cast<BannerListItemView*>(view.GetPointer());
     listItemView->SetGraphics(_bannerListItemViewGraphics);
     FileRecyclerAdapter::BindView(view, index);
 }
 
-TaskResult<void> BannerListFileRecyclerAdapter::BindView(View* view, int index,
+TaskResult<void> BannerListFileRecyclerAdapter::BindView(SharedPtr<View> view, int index,
     const InternalFileInfo* internalFileInfo, const vu8& cancelRequested) const
 {
-    auto listItemView = static_cast<BannerListItemView*>(view);
+    auto listItemView = static_cast<BannerListItemView*>(view.GetPointer());
+    listItemView->GetViewModel().SetIndex(index);
     const auto& fileInfo = _fileInfoManager->GetItem(index);
     bool fileNameAsTitle = true;
     if (internalFileInfo)
@@ -70,12 +68,20 @@ TaskResult<void> BannerListFileRecyclerAdapter::BindView(View* view, int index,
     return TaskResult<void>::Completed();
 }
 
-void BannerListFileRecyclerAdapter::ReleaseView(View* view, int index) const
+void BannerListFileRecyclerAdapter::SetQueueTask(const SharedPtr<View>& view, QueueTask<void> queueTask) const
+{
+    auto listItemView = static_cast<BannerListItemView*>(view.GetPointer());
+    listItemView->GetViewModel().SetQueueTask(std::move(queueTask));
+}
+
+void BannerListFileRecyclerAdapter::ReleaseView(SharedPtr<View> view, int index) const
 {
     LOG_DEBUG("Releasing %d\n", index);
-    auto listItemView = static_cast<BannerListItemView*>(view);
+    auto listItemView = static_cast<BannerListItemView*>(view.GetPointer());
     listItemView->SetIcon(nullptr);
     listItemView->SetGameTitle(u"");
+    listItemView->GetViewModel().SetIndex(-1);
+    listItemView->GetViewModel().CancelQueueTask();
     _fileInfoManager->ReleaseFileInfo(index);
 }
 

arm9/source/romBrowser/DisplayMode/BannerListFileRecyclerAdapter.h

@@ -8,19 +8,18 @@ class IRomBrowserViewFactory;
 class BannerListFileRecyclerAdapter : public FileRecyclerAdapter
 {
 public:
-    BannerListFileRecyclerAdapter(FileInfoManager* fileInfoManager,
+    BannerListFileRecyclerAdapter(IRomBrowserController* romBrowserController, FileInfoManager* fileInfoManager,
         TaskQueueBase* taskQueue, const IThemeFileIconFactory* themeFileIconFactory,
         const IRomBrowserViewFactory* romBrowserViewFactory,
         VBlankTextureLoader* vblankTextureLoader)
-        : FileRecyclerAdapter(fileInfoManager, taskQueue, themeFileIconFactory)
+        : FileRecyclerAdapter(romBrowserController, fileInfoManager, taskQueue, themeFileIconFactory)
         , _romBrowserViewFactory(romBrowserViewFactory)
         , _vblankTextureLoader(vblankTextureLoader) { }
 
     void GetViewSize(int& width, int& height) const override;
-    View* CreateView() const override;
-    void DestroyView(View* view) const override;
-    void BindView(View* view, int index) const override;
-    void ReleaseView(View* view, int index) const override;
+    SharedPtr<View> CreateView() const override;
+    void BindView(SharedPtr<View> view, int index) const override;
+    void ReleaseView(SharedPtr<View> view, int index) const override;
 
     void InitVram(const VramContext& vramContext) override;
 
@@ -29,6 +28,7 @@ private:
     BannerListItemView::VramToken _bannerListItemViewGraphics;
     VBlankTextureLoader* _vblankTextureLoader;
 
-    TaskResult<void> BindView(View* view, int index,
+    TaskResult<void> BindView(SharedPtr<View> view, int index,
         const InternalFileInfo* internalFileInfo, const vu8& cancelRequested) const override;
+    void SetQueueTask(const SharedPtr<View>& view, QueueTask<void> queueTask) const override;
 };

arm9/source/romBrowser/DisplayMode/CoverFlowFileRecyclerAdapter.cpp

@@ -13,21 +13,17 @@ void CoverFlowFileRecyclerAdapter::GetViewSize(int& width, int& height) const
     height = 44;
 }
 
-View* CoverFlowFileRecyclerAdapter::CreateView() const
+SharedPtr<View> CoverFlowFileRecyclerAdapter::CreateView() const
 {
-    return new CoverView(_vblankTextureLoader);
+    return CoverView::CreateShared(
+        std::make_unique<RomBrowserItemViewModel>(_romBrowserController), _vblankTextureLoader);
 }
 
-void CoverFlowFileRecyclerAdapter::DestroyView(View* view) const
-{
-    auto coverView = static_cast<CoverView*>(view);
-    delete coverView;
-}
-
-TaskResult<void> CoverFlowFileRecyclerAdapter::BindView(View* view, int index,
+TaskResult<void> CoverFlowFileRecyclerAdapter::BindView(SharedPtr<View> view, int index,
     const InternalFileInfo* internalFileInfo, const vu8& cancelRequested) const
 {
-    auto coverView = static_cast<CoverView*>(view);
+    auto coverView = static_cast<CoverView*>(view.GetPointer());
+    coverView->GetViewModel().SetIndex(index);
     auto cover = _fileInfoManager->GetFileCover(index);
     if (cancelRequested)
     {
@@ -45,11 +41,19 @@ TaskResult<void> CoverFlowFileRecyclerAdapter::BindView(View* view, int index,
     return TaskResult<void>::Completed();
 }
 
-void CoverFlowFileRecyclerAdapter::ReleaseView(View* view, int index) const
+void CoverFlowFileRecyclerAdapter::SetQueueTask(const SharedPtr<View>& view, QueueTask<void> queueTask) const
+{
+    auto coverView = static_cast<CoverView*>(view.GetPointer());
+    coverView->GetViewModel().SetQueueTask(std::move(queueTask));
+}
+
+void CoverFlowFileRecyclerAdapter::ReleaseView(SharedPtr<View> view, int index) const
 {
     LOG_DEBUG("Releasing %d\n", index);
-    auto coverView = static_cast<CoverView*>(view);
+    auto coverView = static_cast<CoverView*>(view.GetPointer());
     coverView->ClearCover();
+    coverView->GetViewModel().SetIndex(-1);
+    coverView->GetViewModel().CancelQueueTask();
     _fileInfoManager->ReleaseFileInfo(index);
 }
 

arm9/source/romBrowser/DisplayMode/CoverFlowFileRecyclerAdapter.h

@@ -8,20 +8,19 @@ class ICoverRepository;
 class CoverFlowFileRecyclerAdapter : public FileRecyclerAdapter
 {
 public:
-    CoverFlowFileRecyclerAdapter(FileInfoManager* fileInfoManager,
+    CoverFlowFileRecyclerAdapter(IRomBrowserController* romBrowserController, FileInfoManager* fileInfoManager,
         TaskQueueBase* taskQueue, const IThemeFileIconFactory* themeFileIconFactory,
         const IRomBrowserViewFactory* romBrowserViewFactory,
         VBlankTextureLoader* vblankTextureLoader,
         const ICoverRepository* coverRepository)
-        : FileRecyclerAdapter(fileInfoManager, taskQueue, themeFileIconFactory)
+        : FileRecyclerAdapter(romBrowserController, fileInfoManager, taskQueue, themeFileIconFactory)
         , _romBrowserViewFactory(romBrowserViewFactory)
         , _vblankTextureLoader(vblankTextureLoader)
         , _coverRepository(coverRepository) { }
 
     void GetViewSize(int& width, int& height) const override;
-    View* CreateView() const override;
-    void DestroyView(View* view) const override;
-    void ReleaseView(View* view, int index) const override;
+    SharedPtr<View> CreateView() const override;
+    void ReleaseView(SharedPtr<View> view, int index) const override;
 
     void InitVram(const VramContext& vramContext) override;
 
@@ -30,6 +29,7 @@ private:
     VBlankTextureLoader* _vblankTextureLoader;
     const ICoverRepository* _coverRepository;
 
-    TaskResult<void> BindView(View* view, int index,
+    TaskResult<void> BindView(SharedPtr<View> view, int index,
         const InternalFileInfo* internalFileInfo, const vu8& cancelRequested) const override;
+    void SetQueueTask(const SharedPtr<View>& view, QueueTask<void> queueTask) const override;
 };

arm9/source/romBrowser/DisplayMode/IconGridFileRecyclerAdapter.cpp

@@ -3,6 +3,7 @@
 #include "core/task/TaskQueue.h"
 #include "../views/IconGridItemView.h"
 #include "../Theme/IRomBrowserViewFactory.h"
+#include "romBrowser/viewModels/RomBrowserItemViewModel.h"
 #include "IconGridFileRecyclerAdapter.h"
 
 void IconGridFileRecyclerAdapter::GetViewSize(int& width, int& height) const
@@ -11,27 +12,23 @@ void IconGridFileRecyclerAdapter::GetViewSize(int& width, int& height) const
     height = 44;
 }
 
-View* IconGridFileRecyclerAdapter::CreateView() const
+SharedPtr<View> IconGridFileRecyclerAdapter::CreateView() const
 {
-    return _romBrowserViewFactory->CreateIconGridItemView();
+    return _romBrowserViewFactory->CreateIconGridItemView(std::make_unique<RomBrowserItemViewModel>(_romBrowserController));
 }
 
-void IconGridFileRecyclerAdapter::DestroyView(View* view) const
+void IconGridFileRecyclerAdapter::BindView(SharedPtr<View> view, int index) const
 {
-    delete static_cast<IconGridItemView*>(view);
-}
-
-void IconGridFileRecyclerAdapter::BindView(View* view, int index) const
-{
-    auto iconGridItemView = static_cast<IconGridItemView*>(view);
+    auto iconGridItemView = static_cast<IconGridItemView*>(view.GetPointer());
     iconGridItemView->SetGraphics(_iconGridItemViewGraphics);
     FileRecyclerAdapter::BindView(view, index);
 }
 
-TaskResult<void> IconGridFileRecyclerAdapter::BindView(View* view, int index,
+TaskResult<void> IconGridFileRecyclerAdapter::BindView(SharedPtr<View> view, int index,
     const InternalFileInfo* internalFileInfo, const vu8& cancelRequested) const
 {
-    auto iconGridItemView = static_cast<IconGridItemView*>(view);
+    auto iconGridItemView = static_cast<IconGridItemView*>(view.GetPointer());
+    iconGridItemView->GetViewModel().SetIndex(index);
     auto icon = internalFileInfo ? internalFileInfo->CreateGameIcon() : nullptr;
     if (!icon)
     {
@@ -59,11 +56,19 @@ TaskResult<void> IconGridFileRecyclerAdapter::BindView(View* view, int index,
     return TaskResult<void>::Completed();
 }
 
-void IconGridFileRecyclerAdapter::ReleaseView(View* view, int index) const
+void IconGridFileRecyclerAdapter::SetQueueTask(const SharedPtr<View>& view, QueueTask<void> queueTask) const
+{
+    auto iconGridItemView = static_cast<IconGridItemView*>(view.GetPointer());
+    iconGridItemView->GetViewModel().SetQueueTask(std::move(queueTask));
+}
+
+void IconGridFileRecyclerAdapter::ReleaseView(SharedPtr<View> view, int index) const
 {
     LOG_DEBUG("Releasing %d\n", index);
-    auto iconGridItemView = static_cast<IconGridItemView*>(view);
+    auto iconGridItemView = static_cast<IconGridItemView*>(view.GetPointer());
     iconGridItemView->SetIcon(nullptr);
+    iconGridItemView->GetViewModel().SetIndex(-1);
+    iconGridItemView->GetViewModel().CancelQueueTask();
     _fileInfoManager->ReleaseFileInfo(index);
 }
 

arm9/source/romBrowser/DisplayMode/IconGridFileRecyclerAdapter.h

@@ -7,17 +7,16 @@ class IRomBrowserViewFactory;
 class IconGridFileRecyclerAdapter : public FileRecyclerAdapter
 {
 public:
-    IconGridFileRecyclerAdapter(FileInfoManager* fileInfoManager,
+    IconGridFileRecyclerAdapter(IRomBrowserController* romBrowserController, FileInfoManager* fileInfoManager,
         TaskQueueBase* taskQueue, const IThemeFileIconFactory* themeFileIconFactory,
         const IRomBrowserViewFactory* romBrowserViewFactory)
-        : FileRecyclerAdapter(fileInfoManager, taskQueue, themeFileIconFactory)
+        : FileRecyclerAdapter(romBrowserController, fileInfoManager, taskQueue, themeFileIconFactory)
         , _romBrowserViewFactory(romBrowserViewFactory) { }
 
     void GetViewSize(int& width, int& height) const override;
-    View* CreateView() const override;
-    void DestroyView(View* view) const override;
-    void BindView(View* view, int index) const override;
-    void ReleaseView(View* view, int index) const override;
+    SharedPtr<View> CreateView() const override;
+    void BindView(SharedPtr<View> view, int index) const override;
+    void ReleaseView(SharedPtr<View> view, int index) const override;
 
     void InitVram(const VramContext& vramContext) override;
 
@@ -25,6 +24,7 @@ private:
     const IRomBrowserViewFactory* _romBrowserViewFactory;
     IconGridItemView::VramToken _iconGridItemViewGraphics;
 
-    TaskResult<void> BindView(View* view, int index,
+    TaskResult<void> BindView(SharedPtr<View> view, int index,
         const InternalFileInfo* internalFileInfo, const vu8& cancelRequested) const override;
+    void SetQueueTask(const SharedPtr<View>& view, QueueTask<void> queueTask) const override;
 };

arm9/source/romBrowser/DisplayMode/RomBrowserBannerListDisplayMode.h

@@ -10,26 +10,26 @@ public:
 
     bool IsVertical() const override { return true; }
 
-    std::unique_ptr<AppBarView> CreateAppBarView(const IRomBrowserViewFactory* romBrowserViewFactory,
+    SharedPtr<AppBarView> CreateAppBarView(const IRomBrowserViewFactory* romBrowserViewFactory,
         int startButtonCount, int endButtonCount) const override
     {
         return romBrowserViewFactory->CreateAppBarView(0, 0,
             AppBarView::Orientation::Vertical, startButtonCount, endButtonCount);
     }
 
-    std::unique_ptr<RecyclerViewBase> CreateRecyclerView(const IRomBrowserViewFactory* romBrowserViewFactory) const override
+    SharedPtr<RecyclerViewBase> CreateRecyclerView(const IRomBrowserViewFactory* romBrowserViewFactory) const override
     {
-        auto recyclerView = std::make_unique<RecyclerView>(42, 0, 256 - 42, 192, RecyclerView::Mode::VerticalList);
+        auto recyclerView = RecyclerView::CreateShared(42, 0, 256 - 42, 192, RecyclerView::Mode::VerticalList);
         recyclerView->SetPadding(0, 3);
         recyclerView->SetItemSpacing(0, 3);
         return recyclerView;
     }
 
-    FileRecyclerAdapter* CreateRecyclerAdapter(
+    SharedPtr<FileRecyclerAdapter> CreateRecyclerAdapter(
         RomBrowserViewModel* viewModel, const IThemeFileIconFactory* themeFileIconFactory,
         const IRomBrowserViewFactory* romBrowserViewFactory, VBlankTextureLoader* vblankTextureLoader) const override
     {
-        return new BannerListFileRecyclerAdapter(
+        return SharedPtr<BannerListFileRecyclerAdapter>::MakeShared(viewModel->GetRomBrowserController(),
             &viewModel->GetFileInfoManager(), viewModel->GetIoTaskQueue(), themeFileIconFactory,
             romBrowserViewFactory, vblankTextureLoader);
     }

arm9/source/romBrowser/DisplayMode/RomBrowserDisplayMode.h

@@ -14,10 +14,10 @@ class RomBrowserDisplayMode
 public:
     virtual bool IsVertical() const = 0;
     virtual bool ShowCoverOnTopScreen() const { return true; }
-    virtual std::unique_ptr<AppBarView> CreateAppBarView(const IRomBrowserViewFactory* romBrowserViewFactory,
+    virtual SharedPtr<AppBarView> CreateAppBarView(const IRomBrowserViewFactory* romBrowserViewFactory,
         int startButtonCount, int endButtonCount) const = 0;
-    virtual std::unique_ptr<RecyclerViewBase> CreateRecyclerView(const IRomBrowserViewFactory* romBrowserViewFactory) const = 0;
-    virtual FileRecyclerAdapter* CreateRecyclerAdapter(
+    virtual SharedPtr<RecyclerViewBase> CreateRecyclerView(const IRomBrowserViewFactory* romBrowserViewFactory) const = 0;
+    virtual SharedPtr<FileRecyclerAdapter> CreateRecyclerAdapter(
         RomBrowserViewModel* viewModel, const IThemeFileIconFactory* themeFileIconFactory,
         const IRomBrowserViewFactory* romBrowserViewFactory, VBlankTextureLoader* vblankTextureLoader) const = 0;
 };

arm9/source/romBrowser/DisplayMode/RomBrowserHorizontalCoverFlowDisplayMode.h

@@ -9,19 +9,19 @@ public:
     bool IsVertical() const override { return false; }
     bool ShowCoverOnTopScreen() const override { return false; }
 
-    std::unique_ptr<AppBarView> CreateAppBarView(const IRomBrowserViewFactory* romBrowserViewFactory,
+    SharedPtr<AppBarView> CreateAppBarView(const IRomBrowserViewFactory* romBrowserViewFactory,
         int startButtonCount, int endButtonCount) const override
     {
         return romBrowserViewFactory->CreateAppBarView(0, 0,
             AppBarView::Orientation::Horizontal, startButtonCount, endButtonCount);
     }
 
-    std::unique_ptr<RecyclerViewBase> CreateRecyclerView(const IRomBrowserViewFactory* romBrowserViewFactory) const override
+    SharedPtr<RecyclerViewBase> CreateRecyclerView(const IRomBrowserViewFactory* romBrowserViewFactory) const override
     {
         return romBrowserViewFactory->CreateCoverFlowRecyclerView();
     }
 
-    FileRecyclerAdapter* CreateRecyclerAdapter(
+    SharedPtr<FileRecyclerAdapter> CreateRecyclerAdapter(
         RomBrowserViewModel* viewModel, const IThemeFileIconFactory* themeFileIconFactory,
         const IRomBrowserViewFactory* romBrowserViewFactory, VBlankTextureLoader* vblankTextureLoader) const override
     {

arm9/source/romBrowser/DisplayMode/RomBrowserHorizontalIconGridDisplayMode.h

@@ -10,26 +10,26 @@ public:
 
     bool IsVertical() const override { return false; }
 
-    std::unique_ptr<AppBarView> CreateAppBarView(const IRomBrowserViewFactory* romBrowserViewFactory,
+    SharedPtr<AppBarView> CreateAppBarView(const IRomBrowserViewFactory* romBrowserViewFactory,
         int startButtonCount, int endButtonCount) const override
     {
         return romBrowserViewFactory->CreateAppBarView(0, 0,
             AppBarView::Orientation::Horizontal, startButtonCount, endButtonCount);
     }
 
-    std::unique_ptr<RecyclerViewBase> CreateRecyclerView(const IRomBrowserViewFactory* romBrowserViewFactory) const override
+    SharedPtr<RecyclerViewBase> CreateRecyclerView(const IRomBrowserViewFactory* romBrowserViewFactory) const override
     {
-        auto recyclerView = std::make_unique<RecyclerView>(0, 42, 256, 192 - 42, RecyclerView::Mode::HorizontalGrid);
+        auto recyclerView = RecyclerView::CreateShared(0, 42, 256, 192 - 42, RecyclerView::Mode::HorizontalGrid);
         recyclerView->SetPadding(10, 0);
         recyclerView->SetItemSpacing(4, 4);
         return recyclerView;
     }
 
-    FileRecyclerAdapter* CreateRecyclerAdapter(
+    SharedPtr<FileRecyclerAdapter> CreateRecyclerAdapter(
         RomBrowserViewModel* viewModel, const IThemeFileIconFactory* themeFileIconFactory,
         const IRomBrowserViewFactory* romBrowserViewFactory, VBlankTextureLoader* vblankTextureLoader) const override
     {
-        return new IconGridFileRecyclerAdapter(
+        return SharedPtr<IconGridFileRecyclerAdapter>::MakeShared(viewModel->GetRomBrowserController(),
             &viewModel->GetFileInfoManager(), viewModel->GetIoTaskQueue(),
             themeFileIconFactory, romBrowserViewFactory);
     }

arm9/source/romBrowser/DisplayMode/RomBrowserVerticalIconGridDisplayMode.h

@@ -10,26 +10,26 @@ public:
 
     bool IsVertical() const override { return true; }
 
-    std::unique_ptr<AppBarView> CreateAppBarView(const IRomBrowserViewFactory* romBrowserViewFactory,
+    SharedPtr<AppBarView> CreateAppBarView(const IRomBrowserViewFactory* romBrowserViewFactory,
         int startButtonCount, int endButtonCount) const override
     {
         return romBrowserViewFactory->CreateAppBarView(0, 0,
             AppBarView::Orientation::Vertical, startButtonCount, endButtonCount);
     }
 
-    std::unique_ptr<RecyclerViewBase> CreateRecyclerView(const IRomBrowserViewFactory* romBrowserViewFactory) const override
+    SharedPtr<RecyclerViewBase> CreateRecyclerView(const IRomBrowserViewFactory* romBrowserViewFactory) const override
     {
-        auto recyclerView = std::make_unique<RecyclerView>(42, 0, 256 - 42, 192, RecyclerView::Mode::VerticalGrid);
+        auto recyclerView = RecyclerView::CreateShared(42, 0, 256 - 42, 192, RecyclerView::Mode::VerticalGrid);
         recyclerView->SetPadding(0, 3);
         recyclerView->SetItemSpacing(9, 3);
         return recyclerView;
     }
 
-    FileRecyclerAdapter* CreateRecyclerAdapter(
+    SharedPtr<FileRecyclerAdapter> CreateRecyclerAdapter(
         RomBrowserViewModel* viewModel, const IThemeFileIconFactory* themeFileIconFactory,
         const IRomBrowserViewFactory* romBrowserViewFactory, VBlankTextureLoader* vblankTextureLoader) const override
     {
-        return new IconGridFileRecyclerAdapter(
+        return SharedPtr<IconGridFileRecyclerAdapter>::MakeShared(viewModel->GetRomBrowserController(),
             &viewModel->GetFileInfoManager(), viewModel->GetIoTaskQueue(),
             themeFileIconFactory, romBrowserViewFactory);
     }

arm9/source/romBrowser/FileInfo.cpp

@@ -4,15 +4,15 @@
 #include "FileInfo.h"
 
 FileInfo::FileInfo(const FileInfo& fileInfo)
-    : _type(fileInfo._type), _fastFileRef(fileInfo._fastFileRef)
+    : _type(fileInfo._type), _fastFileRef(fileInfo._fastFileRef), _attributes(fileInfo._attributes)
 {
     u32 bufferLength = strlen(fileInfo.GetFileName()) + 1;
     _name = std::make_unique_for_overwrite<TCHAR[]>(bufferLength);
     StringUtil::Copy(_name.get(), fileInfo.GetFileName(), bufferLength);
 }
 
-FileInfo::FileInfo(const TCHAR* fileName, const FileType* type, const FastFileRef& fastFileRef)
-    : _type(type), _fastFileRef(fastFileRef)
+FileInfo::FileInfo(const TCHAR* fileName, const FileType* type, const FastFileRef& fastFileRef, u8 attributes)
+    : _type(type), _fastFileRef(fastFileRef), _attributes(attributes)
 {
     u32 bufferLength = strlen(fileName) + 1;
     _name = std::make_unique_for_overwrite<TCHAR[]>(bufferLength);

arm9/source/romBrowser/FileInfo.h

@@ -10,7 +10,7 @@ class FileInfo
 public:
     FileInfo() { }
     FileInfo(const FileInfo& fileInfo);
-    FileInfo(const TCHAR* fileName, const FileType* type, const FastFileRef& fastFileRef);
+    FileInfo(const TCHAR* fileName, const FileType* type, const FastFileRef& fastFileRef, u8 attributes);
 
     FileInfo &operator=(FileInfo&& rhs)
     {
@@ -35,8 +35,13 @@ public:
 
     const FastFileRef& GetFastFileRef() const { return _fastFileRef; }
 
+    bool IsReadOnly() const { return _attributes & AM_RDO; }
+    bool IsHidden() const { return _attributes & AM_HID; }
+    bool IsSystem() const { return _attributes & AM_SYS; }
+
 private:
     std::unique_ptr<TCHAR[]> _name;
     const FileType* _type;
     FastFileRef _fastFileRef;
+    u8 _attributes;
 };

arm9/source/romBrowser/FileInfoManager.cpp

@@ -15,6 +15,34 @@ FileInfoManager::~FileInfoManager()
     }
 }
 
+void FileInfoManager::LoadFileInfo(int index)
+{
+    auto internalFileInfo = _extraFileInfo[index].internalFileInfo;
+    if (!internalFileInfo)
+    {
+        internalFileInfo = _items[index]->CreateInternalFileInfo();
+    }
+
+    if (!_extraFileInfo[index].fileCover.Lock())
+    {
+        _extraFileInfo[index].fileCover = SharedPtr(_coverRepository.GetCoverForFile(*_items[index], internalFileInfo));
+    }
+
+    _extraFileInfo[index].internalFileInfo = internalFileInfo;
+}
+
+void FileInfoManager::ReleaseFileInfo(int index)
+{
+    auto internalFileInfo = _extraFileInfo[index].internalFileInfo;
+    if (internalFileInfo)
+    {
+        _extraFileInfo[index].internalFileInfo = nullptr;
+        delete internalFileInfo;
+    }
+
+    _extraFileInfo[index].fileCover.Reset();
+}
+
 int FileInfoManager::GetItemIndex(const char* fileName)
 {
     if (fileName == nullptr)

arm9/source/romBrowser/FileInfoManager.h

@@ -4,7 +4,7 @@
 #include "FileInfo.h"
 #include "FileType/FileCover.h"
 #include "ICoverRepository.h"
-#include "core/SharedPtr.h"
+#include "core/AtomicSharedPtr.h"
 #include "FileType/InternalFileInfo.h"
 
 class FileInfoManager
@@ -20,36 +20,12 @@ public:
 
     SharedPtr<FileCover> GetFileCover(int index)
     {
-        return _extraFileInfo[index].fileCover;
+        return _extraFileInfo[index].fileCover.Lock();
     }
 
-    void LoadFileInfo(int index)
-    {
-        auto internalFileInfo = GetInternalFileInfo(index);
-        if (!internalFileInfo)
-        {
-            internalFileInfo = _items[index]->CreateInternalFileInfo();
-        }
+    void LoadFileInfo(int index);
 
-        if (!_extraFileInfo[index].fileCover.IsValid())
-        {
-            _extraFileInfo[index].fileCover = SharedPtr(_coverRepository.GetCoverForFile(*_items[index], internalFileInfo));
-        }
-
-        _extraFileInfo[index].internalFileInfo = internalFileInfo;
-    }
-
-    void ReleaseFileInfo(int index)
-    {
-        auto internalFileInfo = GetInternalFileInfo(index);
-        if (internalFileInfo)
-        {
-            delete internalFileInfo;
-            _extraFileInfo[index].internalFileInfo = nullptr;
-        }
-
-        _extraFileInfo[index].fileCover.Reset();
-    }
+    void ReleaseFileInfo(int index);
 
     int GetItemIndex(const char* fileName);
 
@@ -60,7 +36,7 @@ private:
     struct ExtraFileInfo
     {
         const InternalFileInfo* internalFileInfo;
-        SharedPtr<FileCover> fileCover;
+        AtomicSharedPtr<FileCover> fileCover;
     };
 
     std::unique_ptr<const FileInfo*[]> _items;

arm9/source/romBrowser/FileRecyclerAdapter.cpp

@@ -8,11 +8,17 @@ u32 FileRecyclerAdapter::GetItemCount() const
     return _fileInfoManager->GetItemCount();
 }
 
-void FileRecyclerAdapter::BindView(View* view, int index) const
+void FileRecyclerAdapter::BindView(SharedPtr<View> view, int index) const
 {
     LOG_DEBUG("Binding %d\n", index);
-    _taskQueue->Enqueue([=, this] (const vu8& cancelRequested)
+    auto queueTask = _taskQueue->Enqueue([=, this] (const vu8& cancelRequested)
     {
+        if (cancelRequested)
+        {
+            LOG_DEBUG("Task to load %d was canceled\n", index);
+            return TaskResult<void>::Canceled();
+        }
+
         LOG_DEBUG("Started task to load %d\n", index);
         _fileInfoManager->LoadFileInfo(index);
         auto internalFileInfo = _fileInfoManager->GetInternalFileInfo(index);
@@ -23,4 +29,5 @@ void FileRecyclerAdapter::BindView(View* view, int index) const
         }
         return BindView(view, index, internalFileInfo, cancelRequested);
     });
+    SetQueueTask(view, std::move(queueTask));
 }

arm9/source/romBrowser/FileRecyclerAdapter.h

@@ -7,12 +7,13 @@ class IVramManager;
 class InternalFileInfo;
 class IThemeFileIconFactory;
 class VramContext;
+class IRomBrowserController;
 
 class FileRecyclerAdapter : public RecyclerAdapter
 {
 public:
     u32 GetItemCount() const override;
-    void BindView(View* view, int index) const override;
+    void BindView(SharedPtr<View> view, int index) const override;
 
     void SetIconFrameCounter(u32 iconFrameCounter)
     {
@@ -22,16 +23,18 @@ public:
     virtual void InitVram(const VramContext& vramContext) { }
 
 protected:
+    IRomBrowserController* _romBrowserController;
     FileInfoManager* _fileInfoManager;
     TaskQueueBase* _taskQueue;
     u32 _iconFrameCounter;
     const IThemeFileIconFactory* _themeFileIconFactory;
 
-    FileRecyclerAdapter(FileInfoManager* fileInfoManager, TaskQueueBase* taskQueue,
-        const IThemeFileIconFactory* themeFileIconFactory)
-        : _fileInfoManager(fileInfoManager), _taskQueue(taskQueue)
+    FileRecyclerAdapter(IRomBrowserController* romBrowserController, FileInfoManager* fileInfoManager,
+        TaskQueueBase* taskQueue, const IThemeFileIconFactory* themeFileIconFactory)
+        : _romBrowserController(romBrowserController), _fileInfoManager(fileInfoManager), _taskQueue(taskQueue)
         , _iconFrameCounter(0), _themeFileIconFactory(themeFileIconFactory) { }
 
-    virtual TaskResult<void> BindView(View* view, int index,
+    virtual TaskResult<void> BindView(SharedPtr<View> view, int index,
         const InternalFileInfo* internalFileInfo, const vu8& cancelRequested) const = 0;
+    virtual void SetQueueTask(const SharedPtr<View>& view, QueueTask<void> queueTask) const = 0;
 };

arm9/source/romBrowser/FileType/FileIcon.h

@@ -5,7 +5,7 @@
 class PaletteManager;
 class GraphicsContext;
 
-#define FILE_ICON_VRAM_SIZE     4096
+#define FILE_ICON_VRAM_SIZE     1024
 
 /// @brief Abstract base class representing a file icon.
 class FileIcon
@@ -13,9 +13,17 @@ class FileIcon
 public:
     virtual ~FileIcon() = 0;
 
-    /// @brief Uploads the graphics of this icon to the specified \p vram address.
-    /// @param vram The vram address to load the graphics to.
-    virtual void UploadGraphics(vu16* vram) const = 0;
+    /// @brief Sets the OBJ vram address and offset to use.
+    /// @param objVramAddress The OBJ vram address to use.
+    /// @param objVramOffset The OBJ vram offset to use.
+    virtual void SetVramAddress(vu16* objVramAddress, u32 objVramOffset)
+    {
+        _vramAddress = objVramAddress;
+        _vramOffset = objVramOffset;
+    }
+
+    /// @brief Uploads the graphics of this icon to the vram address specified by SetVramAddress.
+    virtual void UploadGraphics() = 0;
 
     /// @brief Updates this icon.
     virtual void Update() { }
@@ -25,10 +33,6 @@ public:
     /// @param backgroundColor The color on which the icon is drawn.
     virtual void Draw(GraphicsContext& graphicsContext, const Rgb<8, 8, 8>& backgroundColor) = 0;
 
-    /// @brief Sets the OBJ vram offset of this icon.
-    /// @param offset The OBJ vram offset.
-    void SetObjVramOffset(u32 offset) { _vramOffset = offset; }
-
     /// @brief Sets the icon animation frame.
     /// @param frame The animation frame.
     void SetAnimFrame(u32 frame)
@@ -50,6 +54,7 @@ public:
     }
 
 protected:
+    vu16* _vramAddress = nullptr;
     u32 _vramOffset = 0;
     u32 _frame = 0;
     Point _position;

arm9/source/romBrowser/FileType/Nds/NdsFileIcon.cpp

@@ -1,5 +1,4 @@
 #include "common.h"
-#include <libtwl/math/mathDiv.h>
 #include <libtwl/dma/dmaNitro.h>
 #include "gui/PaletteManager.h"
 #include "gui/OamManager.h"
@@ -30,25 +29,36 @@ NdsFileIcon::NdsFileIcon(const nds_banner_t* banner)
                 break;
             }
             else
+            {
                 length += token.duration;
+            }
         }
         _animLength = length;
         _tokenStartTimes[NDS_BANNER_ANIM_TOKEN_COUNT] = _animLength;
     }
 }
 
-void NdsFileIcon::UploadGraphics(vu16* vram) const
+void NdsFileIcon::SetVramAddress(vu16* objVramAddress, u32 objVramOffset)
 {
-    if (_animated)
-        dma_ntrCopy32(3, _banner->animation.iconGfx, vram, sizeof(_banner->animation.iconGfx));
-    else
-        dma_ntrCopy32(3, _banner->iconGfx, vram, sizeof(_banner->iconGfx));
+    FileIcon::SetVramAddress(objVramAddress, objVramOffset);
+    _currentVramSlot = 0;
+    _currentGfxIdx = -1;
+}
+
+void NdsFileIcon::UploadGraphics()
+{
+    if (_vramAddress != nullptr && !_animated)
+    {
+        dma_ntrCopy32(3, _banner->iconGfx, _vramAddress, sizeof(_banner->iconGfx));
+    }
 }
 
 void NdsFileIcon::Update()
 {
     if (!_animated)
+    {
         return;
+    }
 
     _frame %= _animLength;
 
@@ -71,48 +81,31 @@ void NdsFileIcon::Update()
                 break;
             }
             else if (_frame < midTime)
+            {
                 end = mid - 1;
+            }
             else
+            {
                 start = mid + 1;
+            }
         }
 
         _animTokenIdx = start;
     }
 
     if (++_frame == _animLength)
+    {
         _frame = 0;
-
-
-    // if (++_durationCounter < _banner->animation.animTokens[_animTokenIdx].duration)
-    //     return;
-
-    // _durationCounter = 0;
-    
-    // if (++_animTokenIdx >= NDS_BANNER_ANIM_TOKEN_COUNT)
-    // {
-    //     _animTokenIdx = 0;
-    //     return;
-    // }
-
-    // if (_banner->animation.animTokens[_animTokenIdx].duration == NDS_BANNER_ANIM_DURATION_CONTROL_FRAME)
-    // {
-    //     switch (_banner->animation.animTokens[_animTokenIdx].control)
-    //     {
-    //         case NDS_BANNER_ANIM_CONTROL_LOOP:
-    //             _animTokenIdx = 0;
-    //             break;
-
-    //         case NDS_BANNER_ANIM_CONTROL_STOP:
-    //             _animTokenIdx--;
-    //             break;
-    //     }
-    // }
+    }
 }
 
 void NdsFileIcon::Draw(GraphicsContext& graphicsContext, const Rgb<8, 8, 8>& backgroundColor)
 {
-    if (!graphicsContext.IsVisible(Rectangle(_position, 32, 32)))
+    if (!graphicsContext.IsVisible(Rectangle(_position, 32, 32)) ||
+        _vramAddress == nullptr)
+    {
         return;
+    }
 
     const u16* palette = _animated
         ? _banner->animation.iconPltt[_banner->animation.animTokens[_animTokenIdx].plttIdx]
@@ -123,7 +116,17 @@ void NdsFileIcon::Draw(GraphicsContext& graphicsContext, const Rgb<8, 8, 8>& bac
 
     u32 vramOffset = _vramOffset;
     if (_animated)
-        vramOffset += _banner->animation.animTokens[_animTokenIdx].gfxIdx * 512;
+    {
+        int gfxIdx = _banner->animation.animTokens[_animTokenIdx].gfxIdx;
+        if (gfxIdx != _currentGfxIdx)
+        {
+            _currentVramSlot = 1 - _currentVramSlot;
+            _currentGfxIdx = gfxIdx;
+            dma_ntrCopy32(3, &_banner->animation.iconGfx[gfxIdx][0], (u8*)_vramAddress + (_currentVramSlot * NDS_BANNER_ICON_SIZE), NDS_BANNER_ICON_SIZE);
+        }
+
+        vramOffset += _currentVramSlot * NDS_BANNER_ICON_SIZE;
+    }
 
     auto builder = OamBuilder::OamWithSize<32, 32>(
             _position, vramOffset >> 7)