X-Git-Url: https://jasonwoof.com/gitweb/?p=vor.git;a=blobdiff_plain;f=sprite.h;h=3cb2c0e4f5f619aae8f79e9c6748c740a48a85fa;hp=f9070b43141a8479668e4ed3de792b01d220789a;hb=0224eb908d4084f52a22c8d64404a0efb4acfa35;hpb=e06676edd300c8a85d2e6715427e7e22e55c7670

diff --git a/sprite.h b/sprite.h
index f9070b4..3cb2c0e 100644
--- a/sprite.h
+++ b/sprite.h
@@ -15,6 +15,7 @@ typedef struct sprite Sprite;
 
 struct sprite {
 	int8_t type;
+	int8_t flags;
 	Sprite *next;
 	float x, y;
 	float dx, dy;
@@ -25,6 +26,12 @@ struct sprite {
 	uint32_t area;
 };
 
+#define MOVE 1
+#define DRAW 2
+#define COLLIDE 4
+
+#define COLLIDES(sprite) ((sprite)->flags & COLLIDE)
+
 Sprite *free_sprites[N_TYPES];  // lists of free sprites, by type.
 
 void do_collision(Sprite *a, Sprite *b);
@@ -37,9 +44,10 @@ 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);
 
 
@@ -48,6 +56,7 @@ void bounce(Sprite *a, Sprite *b);
 struct ship {
 	// core sprite fields
 	int8_t sprite_type;
+	int8_t flags;
 	struct ship *next;
 	float x, y;
 	float dx, dy;
@@ -64,6 +73,7 @@ struct ship {
 struct rock {
 	// core sprite fields
 	int8_t sprite_type;
+	int8_t flags;
 	struct rock *next;
 	float x, y;
 	float dx, dy;
@@ -99,9 +109,10 @@ static inline void
 draw_sprite(Sprite *s)
 {
 	SDL_Rect dest;
-	if(s->type < 0) return;
-	dest.x = s->x; dest.y = s->y;
-	SDL_BlitSurface(s->image, NULL, surf_screen, &dest);
+	if(s->flags & DRAW) {
+		dest.x = s->x; dest.y = s->y;
+		SDL_BlitSurface(s->image, NULL, surf_screen, &dest);
+	}
 }
 
 #endif // VOR_SPRITE_H