anarch/platform_sdl.h

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2019-09-25 09:51:19 -04:00
#ifndef _SFG_PLATFORM_H
#define _SFG_PLATFORM_H
#include <stdio.h>
#include <SDL2/SDL.h>
#include <time.h>
#include <unistd.h>
#include "palette.h"
#define SFG_RESOLUTION_X 800
#define SFG_RESOLUTION_Y 600
#define SFG_FPS 60
const uint8_t *sdlKeyboardState;
uint16_t screen[SFG_RESOLUTION_X * SFG_RESOLUTION_Y]; // RGB565 format
void SFG_setPixel(uint16_t x, uint16_t y, uint8_t colorIndex)
{
screen[y * SFG_RESOLUTION_X + x] = paletteRGB565[colorIndex];
}
uint32_t SFG_getTimeMs()
{
return SDL_GetTicks();
}
void SFG_sleepMs(uint16_t timeMs)
{
usleep(timeMs * 1000);
}
int8_t SFG_keyPressed(uint8_t key)
{
switch (key)
{
case SFG_KEY_UP: return sdlKeyboardState[SDL_SCANCODE_UP]; break;
case SFG_KEY_RIGHT: return sdlKeyboardState[SDL_SCANCODE_RIGHT]; break;
case SFG_KEY_DOWN: return sdlKeyboardState[SDL_SCANCODE_DOWN]; break;
case SFG_KEY_LEFT: return sdlKeyboardState[SDL_SCANCODE_LEFT]; break;
case SFG_KEY_A: return sdlKeyboardState[SDL_SCANCODE_A]; break;
case SFG_KEY_B: return sdlKeyboardState[SDL_SCANCODE_S]; break;
case SFG_KEY_C: return sdlKeyboardState[SDL_SCANCODE_D]; break;
default: return 0; break;
}
}
int main()
{
printf("starting\n");
SFG_init();
printf("initializing SDL\n");
SDL_Window *window =
SDL_CreateWindow("raycasting", SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED, SFG_RESOLUTION_X, SFG_RESOLUTION_Y,
SDL_WINDOW_SHOWN);
SDL_Renderer *renderer = SDL_CreateRenderer(window,-1,0);
SDL_Texture *texture =
SDL_CreateTexture(renderer,SDL_PIXELFORMAT_RGB565,SDL_TEXTUREACCESS_STATIC,
SFG_RESOLUTION_X,SFG_RESOLUTION_Y);
SDL_Surface *screenSurface = SDL_GetWindowSurface(window);
SDL_Event event;
sdlKeyboardState = SDL_GetKeyboardState(NULL);
int running = 1;
while (running)
{
SDL_PumpEvents(); // updates the keyboard state
if (sdlKeyboardState[SDL_SCANCODE_Q])
break;
SFG_mainLoopBody();
SDL_UpdateTexture(texture,NULL,screen,SFG_RESOLUTION_X * sizeof(uint16_t));
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer,texture,NULL,NULL);
SDL_RenderPresent(renderer);
}
printf("freeing SDL\n");
SDL_DestroyTexture(texture);
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
printf("ending\n");
return 0;
}
#endif // guard