Add key to randomly highlight a game

Package/Environment/Common/controls.conf

@@ -7,6 +7,7 @@ pageDown = B
 letterUp = N
 letterDown = M
 nextPlaylist = P
+random = R
 select = Space
 back = Escape
 quit = Q

RetroFE/Source/Control/UserInput.cpp

@@ -74,6 +74,7 @@ bool UserInput::initialize()
     retVal = MapKey("back", KeyCodeBack) && retVal;
     retVal = MapKey("quit", KeyCodeQuit) && retVal;
     MapKey("nextPlaylist", KeyCodeNextPlaylist);
+    MapKey("random", KeyCodeRandom);
     // these features will need to be implemented at a later time
 //   retVal = MapKey("admin", KeyCodeAdminMode) && retVal;
 //   retVal = MapKey("remove", KeyCodeHideItem) && retVal;

RetroFE/Source/Control/UserInput.h

@@ -40,6 +40,7 @@ public:
         KeyCodeLetterDown,
         KeyCodeLetterUp,
         KeyCodeNextPlaylist,
+        KeyCodeRandom,
         KeyCodeAdminMode,
         KeyCodeHideItem,
         KeyCodeQuit,

RetroFE/Source/Graphics/Component/ScrollingList.cpp

@@ -292,6 +292,14 @@ void ScrollingList::pageDown()
     allocateSpritePoints();
 }
 
+void ScrollingList::random()
+{
+    if(!items_ || items_->size() == 0) return;
+    
+    deallocateSpritePoints();
+    itemIndex_ = rand() % items_->size();
+    allocateSpritePoints();
+}
 
 void ScrollingList::letterUp()
 {

RetroFE/Source/Graphics/Component/ScrollingList.h

@@ -65,6 +65,7 @@ public:
     void letterUp();
     void letterDown();
     void letterChange(bool increment);
+    void random();
     bool isIdle();
     unsigned int getScrollOffsetIndex();
     void setScrollOffsetIndex(unsigned int index);

RetroFE/Source/Graphics/Page.cpp

@@ -407,6 +407,11 @@ void Page::pageScroll(ScrollDirection direction)
     }
 }
 
+void Page::selectRandom()
+{
+    if(activeMenu_) activeMenu_->random(); 
+}
+
 void Page::letterScroll(ScrollDirection direction)
 {
     if(activeMenu_)

RetroFE/Source/Graphics/Page.h

@@ -56,6 +56,7 @@ public:
     bool addComponent(Component *c);
     void pageScroll(ScrollDirection direction);
     void letterScroll(ScrollDirection direction);
+    void selectRandom();
     void start();
     void startComponents();
     void stop();

RetroFE/Source/RetroFE.cpp

@@ -448,7 +448,8 @@ RetroFE::RETROFE_STATE RetroFE::processUserInput(Page *page)
     !input_.keystate(UserInput::KeyCodePageDown) &&
     !input_.keystate(UserInput::KeyCodeLetterUp) &&
     !input_.keystate(UserInput::KeyCodeLetterDown) &&
-    !input_.keystate(UserInput::KeyCodeNextPlaylist))
+    !input_.keystate(UserInput::KeyCodeNextPlaylist) &&
+    !input_.keystate(UserInput::KeyCodeRandom))
     {
         keyLastTime_ = 0;
         keyDelayTime_= 0.3f;
@@ -480,6 +481,10 @@ RetroFE::RETROFE_STATE RetroFE::processUserInput(Page *page)
         {
             page->nextPlaylist();
         }
+        if(input_.keystate(UserInput::KeyCodeRandom))
+        {
+            page->selectRandom();
+        }
     }
 
     if (input_.keystate(UserInput::KeyCodeAdminMode))