Adds support for setEnabled() in PhysicsVehicle, and documents lack of support in PhysicsVehicleWheel.

gameplay/src/PhysicsVehicle.cpp

@@ -226,6 +226,11 @@ PhysicsRigidBody* PhysicsVehicle::getRigidBody() const
     return _rigidBody;
 }
 
+void PhysicsVehicle::setEnabled(bool enable)
+{
+    getRigidBody()->setEnabled(enable);
+}
+
 unsigned int PhysicsVehicle::getNumWheels() const
 {
     return _wheels.size();

gameplay/src/PhysicsVehicle.h

@@ -72,6 +72,14 @@ public:
      */
     PhysicsRigidBody* getRigidBody() const;
 
+    /**
+     * Sets whether the associated rigid body is enabled or disabled
+     * in the physics world.
+     *
+     * @param enable true enables the collision object, false disables it.
+     */
+    void setEnabled(bool enable);
+
     /**
      * Returns the number of wheels on this vehicle.
      *

gameplay/src/PhysicsVehicleWheel.cpp

@@ -119,6 +119,11 @@ PhysicsCollisionObject::Type PhysicsVehicleWheel::getType() const
     return PhysicsCollisionObject::VEHICLE_WHEEL;
 }
 
+void PhysicsVehicleWheel::setEnabled(bool enable)
+{
+    GP_ERROR("Operation not supported (PhysicsVehicleWheel::setEnabled(bool)). Use host vehicle instead.");
+}
+
 void PhysicsVehicleWheel::findAncestorAndBind()
 {
     GP_ASSERT(getNode());

gameplay/src/PhysicsVehicleWheel.h

@@ -50,6 +50,11 @@ public:
      */
     PhysicsCollisionObject::Type getType() const;
 
+    /**
+     * Operation not supported. Use host vehicle's setEnabled() instead.
+     */
+    void setEnabled(bool enable);
+
     /**
      * Apply this wheel's world transform to the specified node.
      * Useful for updating the specified visual node with the current