void world_entity_start( world_instance *world, vg_msg *sav );
void world_entity_serialize( world_instance *world, vg_msg *sav );
-void ent_volume_call( world_instance *world, ent_call *call );
-void ent_audio_call( world_instance *world, ent_call *call );
-void ent_ccmd_call( world_instance *world, ent_call *call );
+entity_call_result ent_volume_call( world_instance *world, ent_call *call );
+entity_call_result ent_audio_call( world_instance *world, ent_call *call );
+entity_call_result ent_ccmd_call( world_instance *world, ent_call *call );
void entity_bh_expand_bound( void *user, boxf bound, u32 item_index );
float entity_bh_centroid( void *user, u32 item_index, int axis );