engine dots push rocks

[vor.git] / main.c

diff --git a/main.c b/main.c
index 43d7bda..b8b03c3 100644 (file)
--- a/main.c
+++ b/main.c
@@ -256,6 +256,7 @@ draw_engine_dots(SDL_Surface *s) {
        uint16_t *pixels = (uint16_t *) s->pixels;
        int row_inc = s->pitch/sizeof(uint16_t);
        int heatindex;
+       Sprite *hit;
 
        for(i = 0; i<MAXENGINEDOTS; i++) {
                if(!edot[i].active) continue;
@@ -268,7 +269,15 @@ draw_engine_dots(SDL_Surface *s) {
                        edot[i].active = 0;
                        continue;
                }
-               if(pixel_collides(edot[i].x, edot[i].y)) { edot[i].active = 0; continue; }
+               // check collisions
+               if((hit = pixel_collides(edot[i].x, edot[i].y))) {
+                       if(hit->type != SHIP) { // they shouldn't hit the ship, but they do
+                               edot[i].active = 0;
+                               hit->dx += ENGINE_DOT_WEIGHT * edot[i].life * edot[i].dx / sprite_mass(hit);
+                               hit->dy += ENGINE_DOT_WEIGHT * edot[i].life * edot[i].dy / sprite_mass(hit);
+                               continue;
+                       }
+               }
                heatindex = edot[i].life * 6;
                c = heatindex>3*W ? heatcolor[3*W-1] : heatcolor[heatindex];
                pixels[row_inc*(int)(edot[i].y) + (int)(edot[i].x)] = c;