ob

Like a fantazy console, but with .so files as cartridges?
git clone git://git.vgx.fr/ob
Log | Files | Refs

clib.c (550B)

      1 unsigned char* pixels;
      2 unsigned char* input;
      3 
      4 unsigned char x = 128, y = 128;
      5 
      6 unsigned iter;
      7 
      8 char color(int i){
      9 	return (char) ((i%128)*8/128)<<5 | (((i/256)*16/256)%8)<<2 | (i%256 < 128 ? 0:1) | (i/256 < 128 ? 0:2);
     10 }
     11 
     12 void init(unsigned char* pixels_ptr, unsigned char* input_ptr){
     13 	pixels = pixels_ptr;
     14 	input = input_ptr;
     15 
     16 	for(int i = 0 ; i < 256*256 ; i++){
     17 		pixels[i] = color(i);
     18 	}
     19 }
     20 
     21 void loop(){
     22 	if(*input & 2)
     23 		x++;
     24 	if(*input & 1)
     25 		x--;
     26 	if(*input & 4)
     27 		y--;
     28 	if(*input & 8)
     29 		y++;
     30 
     31 	pixels[x+y*256] = color(256*256-(x+y*256));
     32 }
     33