git.r.bdr.sh - rbdr/super-polarity/blob - src/main.c

   1 //
   2 //  main.c
   3 //  Super Polarity
   4 //
   5 //  Created by Ruben Beltran del Rio on 8/13/13.
   6 //  Copyright (c) 2013 Abuguet. All rights reserved.
   7 //
   8
   9 #include <stdio.h>
  10 #include <time.h>
  11
  12 #include "SDL2/SDL.h"
  13
  14 // TODO: Move these guys to a config header file
  15 #define SCREEN_WIDTH 640
  16 #define SCREEN_HEIGHT 480
  17 #define FPS 30
  18
  19 int main(int argc, const char * argv[])
  20 {
  21
  22     // SDL Initialization. TODO: Should have an initializer.
  23     SDL_Window *window;
  24     SDL_Renderer *renderer;
  25     Uint32 startFrame;
  26     Uint32 endFrame;
  27     Uint32 delay;
  28     int done;
  29
  30     if (SDL_Init(SDL_INIT_VIDEO) < 0) {
  31         printf("Could not initialize SDL");
  32         exit(1);
  33     }
  34
  35     window = SDL_CreateWindow("Super Polarity", 50, 50, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_OPENGL | SDL_WINDOW_BORDERLESS);
  36
  37     renderer = SDL_CreateRenderer(window, -1, 0);
  38
  39     done = 0;
  40
  41     // Event Loop.
  42     while (!done) {
  43         startFrame = SDL_GetTicks();
  44         SDL_Event event;
  45         while (SDL_PollEvent(&event)) {
  46             if (event.type == SDL_QUIT) {
  47                 done = 1;
  48             }
  49         }
  50
  51         endFrame = SDL_GetTicks();
  52
  53         /* see if we have time to sleep */
  54         delay = 1000 / FPS - (endFrame - startFrame);
  55         if (delay > 1000 / FPS) {
  56             delay = 1000 / FPS;
  57         }
  58         SDL_Delay(delay);
  59     }
  60
  61     SDL_Quit();
  62
  63     return 0;
  64 }
  65