Allow the user to attach user data to a ProxyShape object

src/collision/ProxyShape.cpp

@@ -8,7 +8,7 @@ using namespace reactphysics3d;
 ProxyShape::ProxyShape(CollisionBody* body, CollisionShape* shape, const Transform& transform,
                        decimal mass)
            :mBody(body), mCollisionShape(shape), mLocalToBodyTransform(transform), mMass(mass),
-            mNext(NULL), mBroadPhaseID(-1), mCachedCollisionData(NULL) {
+            mNext(NULL), mBroadPhaseID(-1), mCachedCollisionData(NULL), mUserData(NULL) {
 
 }
 

src/collision/ProxyShape.h

@@ -44,6 +44,9 @@ class ProxyShape {
         /// Cached collision data
         void* mCachedCollisionData;
 
+        /// Pointer to user data
+        void* mUserData;
+
         // -------------------- Methods -------------------- //
 
         /// Private copy-constructor
@@ -81,6 +84,12 @@ class ProxyShape {
         /// Return the mass of the collision shape
         decimal getMass() const;
 
+        /// Return a pointer to the user data attached to this body
+        void* getUserData() const;
+
+        /// Attach user data to this body
+        void setUserData(void* userData);
+
         /// Return the local to parent body transform
         const Transform& getLocalToBodyTransform() const;
 
@@ -121,6 +130,16 @@ inline decimal ProxyShape::getMass() const {
     return mMass;
 }
 
+// Return a pointer to the user data attached to this body
+inline void* ProxyShape::getUserData() const {
+    return mUserData;
+}
+
+// Attach user data to this body
+inline void ProxyShape::setUserData(void* userData) {
+    mUserData = userData;
+}
+
 // Return the local to parent body transform
 inline const Transform& ProxyShape::getLocalToBodyTransform() const {
     return mLocalToBodyTransform;