X-Git-Url: https://jasonwoof.com/gitweb/?p=vor.git;a=blobdiff_plain;f=sprite.c;h=abe9fb37f9762804ed923d69d679c51f4e4eba4c;hp=0a6ab871bf6c9a4baa0a64bc07fa83881d8209a5;hb=f1cd2ff38dd9f3c5c4925d8a5f9588129b3bf343;hpb=40a38066c8a4b53017bb5f422e126dd2c6b20fd5

diff --git a/sprite.c b/sprite.c
index 0a6ab87..abe9fb3 100644
--- a/sprite.c
+++ b/sprite.c
@@ -115,11 +115,25 @@ add_sprite(Sprite *s)
 }
 
 void
+reset_sprites(void)
+{
+	int i;
+
+	for(i=0; i<gw*gh; i++)
+		while(sprites[set][i]) {
+			Sprite *s = remove_sprite(&sprites[set][i]);
+			insert_sprite(&free_sprites[s->type], s);
+			s->flags = 0;
+		}
+}
+
+void
 move_sprite(Sprite *s)
 {
-	// move it.
-	s->x += (s->dx - screendx)*t_frame;
-	s->y += (s->dy - screendy)*t_frame;
+	if(s->flags & MOVE) {
+		s->x += (s->dx - screendx)*t_frame;
+		s->y += (s->dy - screendy)*t_frame;
+	}
 }
 
 void
@@ -129,7 +143,7 @@ sort_sprite(Sprite *s)
 	if(s->x + s->w < 0 || s->x >= XSIZE
 	   || s->y + s->h < 0 || s->y >= YSIZE) {
 		insert_sprite(&free_sprites[s->type], s);
-		s->type = NONE;
+		s->flags = 0;
 	} else insert_sprite(square(s->x, s->y, 1-set), s);
 }
 
@@ -139,7 +153,7 @@ move_sprites(void)
 	int sq;
 	Sprite **head;
 
-	// Move all the sprites (position and set)
+	// Move all the sprites
 	for(sq=0; sq<gw*gh; sq++) {
 		head=&sprites[set][sq];
 		while(*head) {
@@ -198,6 +212,8 @@ collide(Sprite *a, Sprite *b)
 {
 	int dx, dy, xov, yov;
 
+	if(!COLLIDES(a) || !COLLIDES(b)) return false;
+
 	if(b->x < a->x) { Sprite *tmp = a; a = b; b = tmp; }
 
 	dx = b->x - a->x;
@@ -212,6 +228,28 @@ collide(Sprite *a, Sprite *b)
 	else return mask_collide(xov, yov, a, b);
 }
 
+void
+collide_with_list(Sprite *s, Sprite *list)
+{
+	for(; list; list=list->next)
+		if(collide(s, list)) do_collision(s, list);
+}
+
+void
+collisions(void)
+{
+	int i, end = gw*gh;
+	Sprite *s;
+	for(i=0; i<end; i++) {
+		for(s=sprites[set][i]; s; s=s->next) {
+			collide_with_list(s, s->next);
+			if(i+1 < end) collide_with_list(s, sprites[set][i+1]);
+			if(i+gw < end) collide_with_list(s, sprites[set][i+gw]);
+			if(i+gw+1 < end) collide_with_list(s, sprites[set][i+gw+1]);
+		}
+	}
+}
+
 Sprite *
 hit_in_square(Sprite *r, Sprite *s)
 {
@@ -254,6 +292,8 @@ int
 pixel_collide(Sprite *s, int x, int y)
 {
 	uint32_t pmask;
+
+	if(!COLLIDES(s)) return false;
 	
 	if(x < s->x || y < s->y || x >= s->x + s->w || y >= s->y + s->h) return 0;
 
@@ -262,36 +302,37 @@ pixel_collide(Sprite *s, int x, int y)
 	return s->mask[(y*s->mask_w) + (x>>5)] & pmask;
 }
 
-int
+Sprite *
 pixel_hit_in_square(Sprite *r, float x, float y)
 {
 	for(; r; r=r->next) {
-		if(pixel_collide(r, x, y)) return 1;
+		if(COLLIDES(r) && pixel_collide(r, x, y)) return r;
 	}
 	return 0;
 }
 
-int
+Sprite *
 pixel_collides(float x, float y)
 {
 	int l, t;
 	Sprite **sq;
+	Sprite *ret;
 
 	l = (x + grid_size) / grid_size; t = (y + grid_size) / grid_size;
 	sq = &sprites[set][l + t*gw];
-	if(pixel_hit_in_square(*sq, x, y)) return true;
-	if(l > 0 && pixel_hit_in_square(*(sq-1), x, y)) return true;
-	if(t > 0 && pixel_hit_in_square(*(sq-gw), x, y)) return true;
-	if(l > 0 && t > 0 && pixel_hit_in_square(*(sq-1-gw), x, y)) return true;
-	return false;
+	if((ret = pixel_hit_in_square(*sq, x, y))) return ret;
+	if(l > 0 && (ret = pixel_hit_in_square(*(sq-1), x, y))) return ret;
+	if(t > 0 && (ret = pixel_hit_in_square(*(sq-gw), x, y))) return ret;
+	if(l > 0 && t > 0 && (ret = pixel_hit_in_square(*(sq-1-gw), x, y))) return ret;
+	return 0;
 }
 
 
 float
 sprite_mass(Sprite *s)
 {
-	if(s->type == SHIP_SPRITE) return s->area;
-	else if(s->type == ROCK_SPRITE) return 3*s->area;
+	if(s->type == SHIP) return s->area;
+	else if(s->type == ROCK) return 3 * s->area;
 	else return 0;
 }