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>();

src/objects/Entities.hpp

@@ -188,6 +188,7 @@ public:
     void loadEntity(const dynamic::Map_sptr& map);
     void loadEntity(const dynamic::Map_sptr& map, Entity entity);
     void onSave(const Entity& entity);
+    bool hasBlockingInside(AABB aabb);
     std::vector<Entity> getAllInside(AABB aabb);
     void despawn(entityid_t id);
     dynamic::Value serialize(const Entity& entity);

src/objects/EntityDef.hpp

@@ -24,6 +24,7 @@ struct EntityDef {
     std::vector<std::pair<size_t, AABB>> boxSensors {};
     std::vector<std::pair<size_t, float>> radialSensors {};
     std::string skeletonName = name;
+    bool blocking = true;
 
     struct {
         bool enabled = true;