Remove multiple colliders, add spatial index component

game/systems_entity.c

@@ -12,6 +12,19 @@ void entityAdded(ecs_iter_t *it) {
 
 }
 void entityUpdatePhysics(ecs_iter_t *it) {
+    Game *game = ecs_singleton_get_mut(ECS, Game);
+    Position *pos = ecs_field(it, Position, 1);
+    Size *size = ecs_field(it, Size, 2);
+    //MoveForce *force = ecs_field(it, MoveForce, 3);
+    SpatialGridID *spatialID = ecs_field(it, SpatialGridID, 3);
+
+    for (i32 i = 0; i < it->count; i++) {
+        //bzSpatialGridUpdate(game->entityGrid, spatialID[i], pos[i].x, pos[i].y, size[i].x, size[i].y);
+        ecs_entity_t *e = bzSpatialGridGetData(game->entityGrid, spatialID[i]);
+        BZ_ASSERT(*e == it->entities[i]);
+        bzSpatialGridRemove(game->entityGrid, spatialID[i]);
+        spatialID[i] = bzSpatialGridInsert(game->entityGrid, &(it->entities[i]), pos[i].x, pos[i].y, size[i].x, size[i].y);
+    }
 
 }
 
@@ -46,6 +59,7 @@ void renderEntities(ecs_iter_t *it) {
         if (t[i].flipX) src.width *= -1.0f;
         if (t[i].flipY) src.height *= -1.0f;
         DrawTexturePro(t[i].texture, src, dst, origin, r[i], WHITE);
+        DrawRectangleLines(dst.x - dst.width * 0.5f, dst.y, dst.width, dst.height, RED);
     }
 }
 
@@ -74,6 +88,7 @@ void updatePos(ecs_iter_t *it) {
 #include <stdlib.h>
 void targetFinish(ecs_iter_t *it) {
     const Game *game = ecs_singleton_get(ECS, Game);
+    if (game == NULL) return;
 
     for (i32 i = 0; i < it->count; i++) {
         ecs_entity_t e = it->entities[i];