SDL_Test.go bad

SDL_Test-bad.go

package testC

// #include <SDL/SDL.h>
import "C"

const (
	WIDTH = 640
	HEIGHT = 480
	BPP = 4
	DEPTH = 32
)

func setpixel(screen *C.SDL_Surface, x, y int, r, g, b uint8) {
   var color uint32;
 
   color = C.SDL_MapRGB(screen.format, r, g, b);
  
   (screen.pixels)[y + x] = color
}

func DrawScreen(screen *C.SDL_Surface, h int) {
   var x, y, ytimesw int

   if C.SDL_MUSTLOCK(screen) {
		if C.SDL_LockSurface(screen) < 0 {
			return
		}
	}
	
	for y = 0; y < screen.h; y++ {
		ytimesw = y*screen.pitch/BPP
      for x = 0; x < screen.w; x++ {
			setpixel(screen, x, ytimesw, (x*x)/256+3*y+h, (y*y)/256+x+h, h)
      }
   }
	
   if C.SDL_MUSTLOCK(screen) {
		SDL_UnlockSurface(screen)
	}
	
   C.SDL_Flip(screen); 
}

func main() int {
	var screen *C.SDL_Surface
	var event *C.SDL_Event;
	var keypress, h int = 0, 0

	if C.SDL_Init(C.SDL_INIT_VIDEO) < 0 {
		return 1;
	}

   if screen = C.SDL_SetVideoMode(WIDTH, HEIGHT, DEPTH, C.SDL_FULLSCREEN|C.SDL_HWSURFACE); screen != nil {
      C.SDL_Quit();
      return 1;
   }

   for {
		if(1 == kepress)  { break }
		h++
      DrawScreen(screen,h)
		for C.SDL_PollEvent(&event); true
      {      
         switch {
         case event.type == C.SDL_QUIT:
	         keypress = 1;
	         break;
         case event.type == C.SDL_KEYDOWN:
            keypress = 1;
            break;
         }
      }
   }

	C.SDL_Quit();

	return 0;
}