add 'blocking' entity property

src/objects/Entities.cpp

@@ -404,6 +404,16 @@ void Entities::render(Assets* assets, ModelBatch& batch, const Frustum& frustum,
     }
 }
 
+bool Entities::hasBlockingInside(AABB aabb) {
+    auto view = registry.view<EntityId, Transform>();
+    for (auto [entity, eid, transform] : view.each()) {
+        if (eid.def.blocking && aabb.contains(transform.pos)) {
+            return true;
+        }
+    }
+    return false;
+}
+
 std::vector<Entity> Entities::getAllInside(AABB aabb) {
     std::vector<Entity> collected;
     auto view = registry.view<Transform>();