EPhysics: add data setter / getter for bodies

Useful when you need structures per bodies to be updated on
collision callbacks.



SVN revision: 74495

legacy/ephysics/src/lib/EPhysics.h

@@ -1669,6 +1669,39 @@ EAPI void ephysics_body_linear_movement_enable_get(const EPhysics_Body *body, Ei
  */
 EAPI double ephysics_body_rotation_get(const EPhysics_Body *body);
 
+/**
+ * @brief
+ * Set data to @p body.
+ *
+ * If a previous data was set, it's reference will be lost and body
+ * will point to the new data.
+ *
+ * It can be useful when you need to store a structure per body. For example,
+ * some values that must to be updated when a collision occurs between two
+ * bodies.
+ *
+ * @param body The physics body.
+ * @param data The data to be set.
+ *
+ * @see ephysics_body_data_get()
+ *
+ * @ingroup EPhysics_Body
+ */
+EAPI void ephysics_body_data_set(EPhysics_Body *body, void *data);
+
+/**
+ * @brief
+ * Return data previously set to body.
+ *
+ * @param body The physics body.
+ * @return The data set or @c NULL on error.
+ *
+ * @see ephysics_body_data_get() for more details
+ *
+ * @ingroup EPhysics_Body
+ */
+EAPI void *ephysics_body_data_get(const EPhysics_Body *body);
+
 /**
  * @}
  */

legacy/ephysics/src/lib/ephysics_body.cpp

@@ -26,6 +26,7 @@ struct _EPhysics_Body {
      btRigidBody *rigid_body;
      Evas_Object *evas_obj;
      EPhysics_World *world;
+     void *data;
      Eina_Inlist *callbacks;
      double mass;
      Eina_Bool active:1;
@@ -934,6 +935,30 @@ ephysics_body_rotation_get(const EPhysics_Body *body)
    return rot;
 }
 
+EAPI void
+ephysics_body_data_set(EPhysics_Body *body, void *data)
+{
+   if (!body)
+     {
+        ERR("Can't set data, body is null.");
+        return;
+     }
+
+   body->data = data;
+}
+
+EAPI void *
+ephysics_body_data_get(const EPhysics_Body *body)
+{
+   if (!body)
+     {
+        ERR("Can't get data, body is null.");
+        return NULL;
+     }
+
+   return body->data;
+}
+
 #ifdef  __cplusplus
 }
 #endif