issue #2771: Add method Scene::createWithPhysics() end Scene::initWithPhysics()

cocos2dx/base_nodes/CCNode.h

@@ -52,8 +52,6 @@ class ActionManager;
 class Component;
 class Dictionary;
 class ComponentContainer;
-class Scene;
-class PhysicsBody;
 
 /**
  * @addtogroup base_nodes

cocos2dx/layers_scenes_transitions_nodes/CCScene.cpp

@@ -33,6 +33,9 @@ THE SOFTWARE.
 NS_CC_BEGIN
 
 Scene::Scene()
+#ifdef _physicsWorld
+: _physicsWorld(nullptr)
+#endif
 {
     _ignoreAnchorPointForPosition = true;
     setAnchorPoint(Point(0.5f, 0.5f));
@@ -56,7 +59,7 @@ bool Scene::init()
      return bRet;
 }
 
-Scene *Scene::create(bool usePhysics/* = false*/)
+Scene *Scene::create()
 {
     Scene *pRet = new Scene();
     if (pRet && pRet->init())
@@ -71,6 +74,38 @@ Scene *Scene::create(bool usePhysics/* = false*/)
     }
 }
 
+#ifdef CC_USE_PHYSICS
+Scene *Scene::createWithPhysics()
+{
+    Scene *pRet = new Scene();
+    if (pRet && pRet->initWithPhysics())
+    {
+        pRet->autorelease();
+        return pRet;
+    }
+    else
+    {
+        CC_SAFE_DELETE(pRet);
+        return NULL;
+    }
+}
+
+bool Scene::initWithPhysics()
+{
+    bool bRet = false;
+    do
+    {
+        Director * pDirector;
+        CC_BREAK_IF( ! (pDirector = Director::getInstance()) );
+        this->setContentSize(pDirector->getWinSize());
+        CC_BREAK_IF(! (_physicsWorld = PhysicsWorld::create()));
+        // success
+        bRet = true;
+    } while (0);
+    return bRet;
+}
+#endif
+
 void Scene::addChild(Node* child)
 {
     Node::addChild(child);
@@ -85,6 +120,9 @@ void Scene::addChild(Node* child, int zOrder, int tag)
 {
     Node::addChild(child, zOrder, tag);
     
+#ifdef CC_USE_PHYSICS
+    if (_physicsWorld)
+    {
         auto addToPhysicsWorldFunc = [this](Object* node) -> void
         {
             if (typeid(Sprite).hash_code() == typeid(node).hash_code())
@@ -110,6 +148,8 @@ void Scene::addChild(Node* child, int zOrder, int tag)
             addToPhysicsWorldFunc(child);
         }
     }
+#endif
+}
 
 
 NS_CC_END

cocos2dx/layers_scenes_transitions_nodes/CCScene.h

@@ -28,11 +28,10 @@ THE SOFTWARE.
 #define __CCSCENE_H__
 
 #include "base_nodes/CCNode.h"
+#include "physics/CCPhysicsWorld.h"
 
 NS_CC_BEGIN
 
-class PhysicsWorld;
-
 /**
  * @addtogroup scene
  * @{
@@ -52,21 +51,31 @@ class CC_DLL Scene : public Node
 {
 public:
     /** creates a new Scene object */
-    static Scene *create(bool usePhysics = false);
+    static Scene *create();
+#ifdef CC_USE_PHYSICS
+    static Scene *createWithPhysics();
+#endif
 
     Scene();
     virtual ~Scene();
     
     bool init();
+#ifdef CC_USE_PHYSICS
+    bool initWithPhysics();
+#endif
     
     virtual void addChild(Node* child) override;
     virtual void addChild(Node* child, int zOrder) override;
     virtual void addChild(Node* child, int zOrder, int tag) override;
     
+#ifdef CC_USE_PHYSICS
     inline PhysicsWorld* getPhysicsWorld() { return _physicsWorld; }
+#endif
     
 protected:
+#ifdef CC_USE_PHYSICS
     PhysicsWorld* _physicsWorld;
+#endif
 };
 
 // end of scene group

cocos2dx/sprite_nodes/CCSprite.h

@@ -36,6 +36,7 @@ THE SOFTWARE.
 #ifdef EMSCRIPTEN
 #include "base_nodes/CCGLBufferedNode.h"
 #endif // EMSCRIPTEN
+#include "physics/CCPhysicsBody.h"
 
 NS_CC_BEGIN
 
@@ -443,6 +444,7 @@ public:
      */
     void setFlipY(bool bFlipY);
     
+#ifdef CC_USE_PHYSICS
     /**
      *   set the PhysicsBody that let the sprite effect with physics
      */
@@ -452,6 +454,7 @@ public:
      *   get the PhysicsBody the sprite have
      */
     PhysicsBody* getPhysicsBody() const;
+#endif
     
     /// @} End of Sprite properties getter/setters
 
@@ -550,7 +553,9 @@ protected:
     bool _flipX;                              /// Whether the sprite is flipped horizaontally or not.
     bool _flipY;                              /// Whether the sprite is flipped vertically or not.
     
+#ifdef CC_USE_PHYSICS
     PhysicsBody* _physicsBody;        ///< the physicsBody the node have
+#endif
 };