qpawn.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <SDL2/SDL.h>
   4
   5 // redfefine as bitfield
   6 enum button {
   7         A, B, X, Y, U, D, L, R, ST, SE, SL, SR };
   8 enum btnstate {
   9         UP, DOWN };
  10 struct event {
  11         enum btnstate state;
  12         enum button btn; };
  13
  14 // FFI these
  15 void   quit();
  16 void   pixel(int, int);
  17 void   color(int, int, int);
  18 void   clear();
  19 void   draw();
  20 void   sleep(int);
  21 struct event* events();
  22
  23 void   line(int, int, int, int);
  24 void   rect(int, int, int, int);
  25
  26
  27 static SDL_Window*   window   = 0;
  28 static SDL_Renderer* renderer = 0;
  29
  30 void init()
  31 {
  32         if (SDL_Init(SDL_INIT_VIDEO) != 0) {
  33                 printf("sdl init failed");
  34                 quit();
  35                 return;
  36         }
  37         if (SDL_CreateWindowAndRenderer(640,480,0,&window,&renderer)!=0){
  38                 printf("create window&render failed");
  39                 quit();
  40                 return;
  41         }
  42 }
  43
  44 void quit()
  45 {
  46         SDL_DestroyRenderer(renderer);
  47         SDL_DestroyWindow(window);
  48         SDL_Quit();
  49 }
  50
  51 void clear()
  52 {
  53         SDL_RenderClear(renderer);
  54 }
  55
  56 void color(int r, int g, int b)
  57 {
  58         SDL_SetRenderDrawColor(renderer, r, g, b, 255);
  59 }
  60
  61 void pixel(int x, int y)
  62 {
  63         SDL_RenderDrawPoint(renderer, x, y);
  64 }
  65
  66 void draw()
  67 {
  68         SDL_RenderPresent(renderer);
  69 }
  70
  71 void sleep(int t)
  72 {
  73         SDL_Delay(t * 1000);
  74 }
  75
  76 void inline line(int xa, int ya, int xb, int yb)
  77 {
  78         SDL_RenderDrawLine(renderer, xa, ya, xb, yb);
  79 }
  80
  81 void inline rect(int xa, int ya, int xb, int yb)
  82 {
  83         SDL_Rect r;
  84         r.x = xa; r.y = ya; r.w = xb-xa; r.h = yb-ya;
  85         SDL_RenderFillRect(renderer, &r);
  86 }
  87