Code refactor, create chain

entity.odin

@@ -17,26 +17,6 @@ static_index_global :: struct
 	Don't put game's logic here
 */
 
-joint_common :: struct 
-{
-	entity_a, entity_b : static_index,
-	bodyIdA,  bodyIdB  : b2.BodyId,
-}
-
-revolt_joint_def :: struct 
-{
-	//Everything else can be stored in the def
-	entity_a, entity_b : static_index, 
-
-	using def : b2.RevoluteJointDef,
-}
-
-distance_joint_def :: struct 
-{
-	entity_a, entity_b : static_index, 
-	using def : b2.DistanceJointDef,
-}
-
 engine_world :: struct 
 {
 	world_id : b2.WorldId,
@@ -60,6 +40,7 @@ engine_world :: struct
 engine_entity_flags_enum :: enum u64 {
 	POLYGON_IS_BOX,
 	MULTI_BODIES,
+	CHAIN,
 	MULTI_SHAPES,
 }
 
@@ -82,7 +63,11 @@ engine_entity_def :: struct {
 	
 	index         : static_index,
 	
-	body_count    : int,
+	//For chain bodies
+	//It will replicate itself to the body count and connect themselves with rev_joints
+	body_count    : i32,
+	rev_joint     : b2.RevoluteJointDef,
+	half_link_length : f32
 }
 
 engine_entity  :: struct {