EPhysics: constraint removal

Delete the constraints a body belongs to on body removal and avoid
bullet to segfault.

--This line, and those below, will be ignored--


SVN revision: 79850

legacy/ephysics/src/lib/ephysics_body.cpp

@@ -1218,6 +1218,8 @@ _ephysics_body_del(EPhysics_Body *body)
         free(cb);
      }
 
+   ephysics_constraint_body_del(body);
+
    EINA_LIST_FREE(body->collision_groups, group)
       eina_stringshare_del((Eina_Stringshare *)group);
 

legacy/ephysics/src/lib/ephysics_constraints.cpp

@@ -14,6 +14,36 @@ struct _EPhysics_Constraint {
      EPhysics_Body *bodies[2];
 };
 
+static void
+_ephysics_constraint_del(EPhysics_Constraint *constraint)
+{
+   ephysics_world_constraint_del(constraint->world, constraint,
+                                 constraint->bt_constraint);
+   delete constraint->bt_constraint;
+   free(constraint);
+}
+
+void
+ephysics_constraint_body_del(EPhysics_Body *body)
+{
+   void *ldata;
+   EPhysics_Constraint *constraint;
+   Eina_List *l, *constraints, *rem = NULL;
+
+   constraints = ephysics_world_constraints_get(body->world);
+   if (!constraints) return;
+
+   EINA_LIST_FOREACH(constraints, l, ldata)
+     {
+        constraint = (EPhysics_Constraint *)ldata;
+        if (constraint->bodies[0] == body || constraint->bodies[1])
+          rem = eina_list_append(rem, constraint);
+     }
+
+   EINA_LIST_FREE(rem, ldata)
+     _ephysics_constraint_del((EPhysics_Constraint *)ldata);
+}
+
 static void
 _ephysics_constraint_linear_limit_get(const EPhysics_Constraint *constraint, Evas_Coord *lower_x, Evas_Coord *upper_x, Evas_Coord *lower_y, Evas_Coord *upper_y, Evas_Coord *lower_z, Evas_Coord *upper_z, double rate)
 {
@@ -374,11 +404,7 @@ ephysics_constraint_del(EPhysics_Constraint *constraint)
      }
 
    ephysics_world_lock_take(constraint->world);
-   ephysics_world_constraint_del(constraint->world, constraint,
-                                 constraint->bt_constraint);
-   delete constraint->bt_constraint;
-   free(constraint);
-
+   _ephysics_constraint_del(constraint);
    INF("Constraint deleted.");
    ephysics_world_lock_release(constraint->world);
 }

legacy/ephysics/src/lib/ephysics_private.h

@@ -184,6 +184,7 @@ Eina_Bool ephysics_world_bodies_outside_autodel_get(const EPhysics_World *world)
 btSoftBodyWorldInfo *ephysics_world_info_get(const EPhysics_World *world);
 void ephysics_world_lock_take(EPhysics_World *world);
 void ephysics_world_lock_release(EPhysics_World *world);
+Eina_List *ephysics_world_constraints_get(EPhysics_World *world);
 
 /* Body */
 Eina_Bool ephysics_body_filter_collision(EPhysics_Body *body0, EPhysics_Body *body1);
@@ -199,6 +200,7 @@ void ephysics_body_activate(const EPhysics_Body *body, Eina_Bool activate);
 void ephysics_body_evas_objects_restack(EPhysics_World *world);
 void ephysics_body_soft_body_dragging_apply(EPhysics_Body *body);
 void ephysics_body_soft_body_bending_constraints_generate(EPhysics_Body *body);
+void ephysics_constraint_body_del(EPhysics_Body *body);
 
 /* Camera */
 EPhysics_Camera *ephysics_camera_add(EPhysics_World *world);

legacy/ephysics/src/lib/ephysics_world.cpp

@@ -499,6 +499,12 @@ ephysics_world_soft_body_add(EPhysics_World *world, EPhysics_Body *body)
    return EINA_TRUE;
 }
 
+Eina_List *
+ephysics_world_constraints_get(EPhysics_World *world)
+{
+   return world->constraints;
+}
+
 void
 ephysics_world_constraint_add(EPhysics_World *world, EPhysics_Constraint *constraint, btGeneric6DofConstraint *bt_constraint)
 {