561 lines
12 KiB
C++
561 lines
12 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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// Main emulation loop
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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//
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//
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//
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//
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//////////////////////////////////////////////////////////////////////////////
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <fcntl.h>
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#include <time.h>
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#include <unistd.h> /* UNIX standard function definitions */
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#include <errno.h> /* Error number definitions */
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#include <termios.h> /* POSIX terminal control definitions */
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#include <sys/mman.h>
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#include "SDL.h"
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#include "SDLptc.h"
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#include "log.h"
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#include "io.h"
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#include "ws.h"
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#include "rom.h"
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#include "./nec/nec.h"
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#include "./nec/necintrf.h"
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#include "gpu.h"
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#include "audio.h"
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#include "memory.h"
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SDL_Joystick *joystick=NULL;
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char app_window_title[256];
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int app_gameRunning=0;
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int app_terminate=0;
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int app_fullscreen=0;
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SDL_Event app_input_event;
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int app_rotated=0;
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int ws_key_esc = 0;
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static void read_keys()
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{
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static int testJoystick=1;
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if (testJoystick==1)
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{
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testJoystick=0;
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fprintf(log_get(),"%i joysticks were found.\n\n", SDL_NumJoysticks() );
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fprintf(log_get(),"The names of the joysticks are:\n");
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for(int tti=0; tti < SDL_NumJoysticks(); tti++ )
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{
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fprintf(log_get()," %s\n", SDL_JoystickName(tti));
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}
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SDL_JoystickEventState(SDL_ENABLE);
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joystick = SDL_JoystickOpen(0);
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}
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else
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{
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if (joystick!=NULL)
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{
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SDL_JoystickClose(0);
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SDL_JoystickEventState(SDL_ENABLE);
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joystick = SDL_JoystickOpen(0);
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}
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}
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while ( SDL_PollEvent(&app_input_event) )
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{
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if ( app_input_event.type == SDL_QUIT )
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{
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ws_key_esc = 1;
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}
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}
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if (joystick)
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{
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if (SDL_JoystickGetButton(joystick,0))
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{
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ws_key_start=1;
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}
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else
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{
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ws_key_start=0;
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}
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if (SDL_JoystickGetButton(joystick,1))
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{
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ws_key_button_a=1;
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}
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else
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{
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ws_key_button_a=0;
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}
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if (SDL_JoystickGetButton(joystick,2))
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{
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ws_key_button_b=1;
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}
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else
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{
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ws_key_button_b=0;
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}
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if (SDL_JoystickGetAxis(joystick,0)<-7000)
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{
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ws_key_x4=1;
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}
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else
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{
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ws_key_x4=0;
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}
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if (SDL_JoystickGetAxis(joystick,0)>7000)
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{
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ws_key_x2=1;
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}
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else
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{
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ws_key_x2=0;
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}
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if (SDL_JoystickGetAxis(joystick,1)<-7000)
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{
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ws_key_x1=1;
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}
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else
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{
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ws_key_x1=0;
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}
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if (SDL_JoystickGetAxis(joystick,1)>7000)
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{
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ws_key_x3=1;
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}
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else
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{
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ws_key_x3=0;
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}
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ws_key_y4=0;
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ws_key_y2=0;
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ws_key_y1=0;
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ws_key_y3=0;
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}
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else
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{
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ws_key_start=0;
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ws_key_x4=0;
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ws_key_x2=0;
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ws_key_x1=0;
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ws_key_x3=0;
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ws_key_y4=0;
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ws_key_y2=0;
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ws_key_y1=0;
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ws_key_y3=0;
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ws_key_button_a=0;
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ws_key_button_b=0;
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}
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uint8_t *keystate = SDL_GetKeyState(NULL);
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if ( keystate[SDLK_e])
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{
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dump_memory();
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}
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if ( keystate[SDLK_r])
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{
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printf("Boop\n");
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ws_reset();
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}
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if ( keystate[SDLK_ESCAPE] )
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{
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ws_key_esc = 1;
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}
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if ( keystate[SDLK_UP] )
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{
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ws_key_x1=1;
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}
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if ( keystate[SDLK_DOWN] )
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{
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ws_key_x3=1;
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}
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if ( keystate[SDLK_RIGHT] )
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{
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ws_key_x2=1;
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}
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if ( keystate[SDLK_LEFT] )
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{
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ws_key_x4=1;
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}
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if (keystate[SDLK_RETURN])
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{
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ws_key_start=1;
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}
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if (keystate[SDLK_c])
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{
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ws_key_button_a=1;
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}
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if (keystate[SDLK_x])
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{
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ws_key_button_b=1;
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}
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if (keystate[SDLK_w])
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{
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ws_key_y1=1;
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}
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if (keystate[SDLK_a])
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{
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ws_key_y4=1;
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}
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if (keystate[SDLK_s])
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{
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ws_key_y3=1;
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}
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if (keystate[SDLK_d])
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{
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ws_key_y2=1;
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}
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if (keystate[SDLK_o])
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{
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ws_cyclesByLine+=10;
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}
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if (keystate[SDLK_l])
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{
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ws_cyclesByLine-=10;
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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//
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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//
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//
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//
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//
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//
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////////////////////////////////////////////////////////////////////////////////
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static void ws_drawDoubledScanline(int16_t *vs, int16_t *backbuffer_alias)
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{
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int32_t *vs_alias = (int32_t *)vs;
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int32_t data;
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for (int pixel = 0 ; pixel < 224 ; pixel += 8)
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{
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data = *backbuffer_alias++;
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data |= (data << 16);
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*vs_alias++ = data;
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data = *backbuffer_alias++;
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data |= (data << 16);
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*vs_alias++ = data;
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data = *backbuffer_alias++;
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data |= (data << 16);
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*vs_alias++ = data;
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data = *backbuffer_alias++;
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data |= (data << 16);
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*vs_alias++ = data;
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data = *backbuffer_alias++;
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data |= (data << 16);
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*vs_alias++ = data;
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data = *backbuffer_alias++;
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data |= (data << 16);
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*vs_alias++ = data;
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data = *backbuffer_alias++;
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data |= (data << 16);
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*vs_alias++ = data;
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data = *backbuffer_alias++;
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data |= (data << 16);
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*vs_alias++ = data;
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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//
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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//
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//
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//
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//
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//
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////////////////////////////////////////////////////////////////////////////////
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static void ws_drawDoubledRotatedScanline(int16_t *vs, int16_t *backbuffer_alias)
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{
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int32_t *vs_alias = (int32_t *)vs;
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int32_t data;
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for (int pixel = 0 ; pixel < 144 ; pixel += 8)
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{
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data = *backbuffer_alias++;
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data |= (data << 16);
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*vs_alias++ = data;
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data = *backbuffer_alias++;
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data |= (data << 16);
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*vs_alias++ = data;
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data = *backbuffer_alias++;
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data |= (data << 16);
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*vs_alias++ = data;
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data = *backbuffer_alias++;
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data |= (data << 16);
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*vs_alias++ = data;
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data = *backbuffer_alias++;
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data |= (data << 16);
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*vs_alias++ = data;
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data = *backbuffer_alias++;
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data |= (data << 16);
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*vs_alias++ = data;
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data = *backbuffer_alias++;
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data |= (data << 16);
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*vs_alias++ = data;
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data = *backbuffer_alias++;
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data |= (data << 16);
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*vs_alias++ = data;
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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//
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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//
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//
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//
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//
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//
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////////////////////////////////////////////////////////////////////////////////
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void ws_rotate_backbuffer(int16_t *backbuffer)
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{
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static int16_t temp[224*144];
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memcpy(temp,backbuffer,224*144*2);
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for (int line=0; line<144; line++)
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for (int column=0; column<224; column++)
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{
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backbuffer[line+((223-column)<<7)+((223-column)<<4)]=temp[column+(line<<7)+(line<<6)+(line<<5)];
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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//
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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//
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//
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//
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//
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//
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////////////////////////////////////////////////////////////////////////////////
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void ws_emulate(void)
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{
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int32_t nCount = 0;
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int i = 0;
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double dTime = 0.0, dNormalLast = 0.0, dTemp;
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int32_t surfacePitch;
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// 15 bits RGB555
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Format format(16, 0x007c00, 0x00003e0, 0x0000001f);
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Console console;
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Surface *surface;
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if (app_rotated)
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{
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surface = new Surface(144 * 2, 224 * 2, format);
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int16_t *backbuffer = (int16_t *)malloc(224 * 144 * sizeof(int16_t));
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memset(backbuffer, 0x00, 224 * 144 * sizeof(int16_t));
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surfacePitch = (surface->pitch() >> 1);
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dNormalLast = (double)SDL_GetTicks();
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console.open(app_window_title, 144 * 2, 224 * 2, format);
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while (1)
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{
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dTemp = (double)SDL_GetTicks();
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dTime = dTemp - dNormalLast;
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nCount = (int32_t)(dTime * 0.07547); // does this calculation make sense?
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if (nCount <= 0)
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{
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SDL_Delay(2);
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} // No need to do anything for a bit
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else
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{
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dNormalLast += nCount * (1 / 0.07547);
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if (nCount > 10)
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{
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nCount = 10;
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}
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read_keys();
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if (ws_key_esc)
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{
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console.close();
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app_terminate = 1;
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if ((ws_rom_path != NULL) || (app_terminate))
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{
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break;
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}
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console.open(app_window_title, 144 * 2, 224 * 2, format);
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}
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for (i = 0 ; i < nCount - 1 ; i++)
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{
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while (!ws_executeLine(backbuffer, 0))
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{
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}
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}
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while (!ws_executeLine(backbuffer, 1))
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{
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}
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ws_rotate_backbuffer(backbuffer);
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int16_t *vs = (int16_t *)surface->lock();
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int16_t *backbuffer_alias = backbuffer;
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for (int line = 0 ; line < 224 ; line++)
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{
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ws_drawDoubledRotatedScanline(vs, backbuffer_alias);
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vs += surfacePitch;
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ws_drawDoubledRotatedScanline(vs, backbuffer_alias);
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vs += surfacePitch;
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backbuffer_alias += 144;
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}
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surface->unlock();
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surface->copy(console);
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console.update();
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}
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}
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console.close();
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delete surface;
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}
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else
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{
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surface = new Surface(224 * 2, 144 * 2, format);
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int16_t *backbuffer = (int16_t *)malloc(224 * 144 * sizeof(int16_t));
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memset(backbuffer, 0x00, 224 * 144 * sizeof(int16_t));
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surfacePitch = (surface->pitch() >> 1);
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dNormalLast = (double)SDL_GetTicks();
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console.open(app_window_title, 224 * 2, 144 * 2, format);
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while (1)
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{
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dTemp = (double)SDL_GetTicks();
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dTime = dTemp - dNormalLast;
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nCount = (int32_t)(dTime * 0.07547); // does this calculation make sense?
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if (nCount <= 0)
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{
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SDL_Delay(2);
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} // No need to do anything for a bit
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else
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{
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dNormalLast += nCount * (1 / 0.07547);
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if (nCount > 10)
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{
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nCount = 10;
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}
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read_keys();
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if (ws_key_esc)
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{
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console.close();
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app_terminate = 1;
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if ((ws_rom_path != NULL) || (app_terminate))
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{
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break;
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}
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console.open(app_window_title, 224 * 2, 144 * 2, format);
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}
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for (i = 0 ; i < nCount - 1 ; i++)
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{
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while (!ws_executeLine(backbuffer, 0))
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{
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}
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}
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while (!ws_executeLine(backbuffer, 1))
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{
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}
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int16_t *vs = (int16_t *)surface->lock();
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int16_t *backbuffer_alias = backbuffer;
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for (int line = 0 ; line < 144 ; line++)
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{
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ws_drawDoubledScanline(vs, backbuffer_alias);
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vs += surfacePitch;
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ws_drawDoubledScanline(vs, backbuffer_alias);
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vs += surfacePitch;
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backbuffer_alias += 224;
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}
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surface->unlock();
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surface->copy(console);
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console.update();
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}
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}
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console.close();
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delete surface;
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}
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}
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