update entity script semantics

src/objects/Entities.hpp

@@ -9,6 +9,12 @@
 #include <unordered_map>
 #include <entt/entity/registry.hpp>
 
+struct entity_funcs_set {
+    bool init : 1;
+    bool on_despawn : 1;
+    bool on_grounded : 1;
+};
+
 struct EntityDef;
 
 struct EntityId {
@@ -30,6 +36,11 @@ struct Rigidbody {
     Hitbox hitbox;
 };
 
+struct Scripting {
+    entity_funcs_set funcsset;
+    scriptenv env;
+};
+
 class Level;
 class Assets;
 class LineBatch;
@@ -67,6 +78,10 @@ public:
         return registry.get<Rigidbody>(entity);
     }
 
+    Scripting& getScripting() const {
+        return registry.get<Scripting>(entity);
+    }
+
     entityid_t getUID() const {
         return registry.get<EntityId>(entity).uid;
     }