uint32_t area;
};
+// flags
#define MOVE 1
#define DRAW 2
#define COLLIDE 4
void move_sprite(Sprite *s);
void move_sprites(void);
-Sprite *collides(Sprite *s);
-int pixel_collides(float x, float y);
+Sprite * pixel_collides(float x, float y);
void load_sprite(Sprite *sprite, char *filename);
+float sprite_mass(Sprite *s);
void bounce(Sprite *a, Sprite *b);