issue #2771 physical

cocos/physics/CCPhysicsBody.h

@@ -43,7 +43,7 @@ class PhysicsJoint;
 class PhysicsBodyInfo;
 
 
-const PhysicsMaterial PHYSICSBODY_MATERIAL_DEFAULT = {1.0f, 1.0f, 1.0f};
+const PhysicsMaterial PHYSICSBODY_MATERIAL_DEFAULT(1.0f, 1.0f, 1.0f);
 
 /**
  * A body affect by physics.

cocos/physics/CCPhysicsJoint.cpp

@@ -70,16 +70,21 @@ bool PhysicsJoint::init(cocos2d::PhysicsBody *a, cocos2d::PhysicsBody *b)
 {
     do
     {
-        CC_BREAK_IF(a == nullptr || b == nullptr);
-
         CC_BREAK_IF(!(_info = new PhysicsJointInfo(this)));
 
-        _bodyA = a;
-        _bodyA->retain();
-        _bodyA->_joints.push_back(this);
-        _bodyB = b;
-        _bodyB->retain();
-        _bodyB->_joints.push_back(this);
+        if (a != nullptr)
+        {
+            _bodyA = a;
+            _bodyA->retain();
+            _bodyA->_joints.push_back(this);
+        }
+
+        if (b != nullptr)
+        {
+            _bodyB = b;
+            _bodyB->retain();
+            _bodyB->_joints.push_back(this);
+        }
 
         return true;
     } while (false);

cocos/physics/CCPhysicsShape.h

@@ -44,14 +44,20 @@ typedef struct PhysicsMaterial
     float restitution;
     float friction;
 
-    static PhysicsMaterial make(float density, float restitution, float friction)
-    {
-        PhysicsMaterial var = {density, restitution, friction};
-        return var;
-    }
+    PhysicsMaterial()
+    : density(0.0f)
+    , restitution(0.0f)
+    , friction(0.0f)
+    {}
+
+    PhysicsMaterial(float density, float restitution, float friction)
+    : density(density)
+    , restitution(restitution)
+    , friction(friction)
+    {}
 }PhysicsMaterial;
 
-const PhysicsMaterial PHYSICSSHAPE_MATERIAL_DEFAULT = {0.0f, 1.0f, 1.0f};
+const PhysicsMaterial PHYSICSSHAPE_MATERIAL_DEFAULT(0.0f, 1.0f, 1.0f);
 
 /**
  * @brief A shape for body. You do not create PhysicsWorld objects directly, instead, you can view PhysicsBody to see how to create it.

cocos/physics/CCPhysicsWorld.cpp

@@ -88,6 +88,7 @@ class PhysicsWorldCallback
     static void collisionSeparateCallbackFunc(cpArbiter *arb, cpSpace *space, PhysicsWorld *world);
     static void rayCastCallbackFunc(cpShape *shape, cpFloat t, cpVect n, RayCastCallbackInfo *info);
     static void rectQueryCallbackFunc(cpShape *shape, RectQueryCallbackInfo *info);
+    static void nearestPointQueryFunc(cpShape *shape, cpFloat distance, cpVect point, Array *arr);
 
 public:
     static bool continues;
@@ -166,6 +167,15 @@ void PhysicsWorldCallback::rectQueryCallbackFunc(cpShape *shape, RectQueryCallba
                                                              info->data);
 }
 
+void PhysicsWorldCallback::nearestPointQueryFunc(cpShape *shape, cpFloat distance, cpVect point, Array *arr)
+{
+    auto it = PhysicsShapeInfo::map.find(shape);
+
+    CC_ASSERT(it != PhysicsShapeInfo::map.end());
+
+    arr->addObject(it->second->shape);
+}
+
 bool PhysicsWorld::init()
 {
     _info = new PhysicsWorldInfo();
@@ -561,9 +571,30 @@ void PhysicsWorld::rectQuery(PhysicsRectQueryCallback& callback, Rect rect, void
     }
 }
 
-Array* getShapesAtPoint(Point point)
+Array* PhysicsWorld::getShapesAtPoint(Point point)
+{
+    Array* arr = Array::create();
+    cpSpaceNearestPointQuery(this->_info->space,
+                             PhysicsHelper::point2cpv(point),
+                             0,
+                             CP_ALL_LAYERS,
+                             CP_NO_GROUP,
+                             (cpSpaceNearestPointQueryFunc)PhysicsWorldCallback::nearestPointQueryFunc,
+                             arr);
+
+    return arr;
+}
+
+PhysicsShape* PhysicsWorld::getShapeAtPoint(Point point)
 {
+    cpShape* shape = cpSpaceNearestPointQueryNearest(this->_info->space,
+                                    PhysicsHelper::point2cpv(point),
+                                    0,
+                                    CP_ALL_LAYERS,
+                                    CP_NO_GROUP,
+                                    nullptr);
 
+    return shape == nullptr ? nullptr : PhysicsShapeInfo::map.find(shape)->second->shape;
 }
 
 Array* PhysicsWorld::getAllBody() const

cocos/physics/CCPhysicsWorld.h

@@ -98,6 +98,7 @@ class PhysicsWorld
     void rayCast(PhysicsRayCastCallback& callback, Point point1, Point point2, void* data);
     void rectQuery(PhysicsRectQueryCallback& callback, Rect rect, void* data);
     Array* getShapesAtPoint(Point point);
+    PhysicsShape* getShapeAtPoint(Point point);
     Array* getAllBody() const;
 
     /** Register a listener to receive contact callbacks*/

samples/Cpp/TestCpp/Classes/PhysicsTest/PhysicsTest.cpp

@@ -50,7 +50,7 @@ namespace
         return layer;
     }
 
-    static const Color4F STATIC_COLOR = {1.0f, 0.0f, 0.0f, 1.0f};
+    static const Color4F STATIC_COLOR(1.0f, 0.0f, 0.0f, 1.0f);
 }
 
 
@@ -92,6 +92,7 @@ PhysicsDemo::PhysicsDemo()
 : _scene(nullptr)
 , _ball(nullptr)
 , _spriteTexture(nullptr)
+, _mouse(nullptr)
 {
 
 }
@@ -296,7 +297,8 @@ namespace
         -25,-8,0,63,-57,-29,-4,-1,-1,-13,-4,127,-64,31,-2,0,15,103,-1,-1,-57,-8,127,
         -97,-25,-8,0,63,-61,-61,-4,127,-1,-29,-4,127,-64,15,-8,0,0,55,-1,-1,-121,-8,
         127,-97,-25,-8,0,63,-61,-61,-4,127,-1,-29,-4,63,-64,15,-32,0,0,23,-1,-2,3,-16,
-        63,15,-61,-16,0,31,-127,-127,-8,31,-1,-127,-8,31,-128,7,-128,0,0};
+        63,15,-61,-16,0,31,-127,-127,-8,31,-1,-127,-8,31,-128,7,-128,0,0
+    };
 
     static inline int get_pixel(int x, int y)
     {
@@ -365,6 +367,31 @@ Sprite* PhysicsDemo::makeTriangle(float x, float y, Size size, PhysicsMaterial m
     return triangle;
 }
 
+void PhysicsDemo::onTouchesBegan(const std::vector<Touch*>& touches, Event* event)
+{
+    for( auto &touch: touches)
+    {
+        auto location = touch->getLocation();
+        Array* arr = _scene->getPhysicsWorld()->getShapesAtPoint(location);
+
+        PhysicsShape* shape = nullptr;
+        for (Object* obj : *arr)
+        {
+
+        }
+    }
+}
+
+void PhysicsDemo::onTouchesMoved(const std::vector<Touch*>& touches, Event* event)
+{
+
+}
+
+void PhysicsDemo::onTouchesEnded(const std::vector<Touch*>& touches, Event* event)
+{
+
+}
+
 void PhysicsDemoLogoSmash::onEnter()
 {
     PhysicsDemo::onEnter();
@@ -384,7 +411,7 @@ void PhysicsDemoLogoSmash::onEnter()
 
                 Node* ball = makeBall(2*(x - logo_width/2 + x_jitter) + VisibleRect::getVisibleRect().size.width/2,
                                       2*(logo_height-y + y_jitter) + VisibleRect::getVisibleRect().size.height/2 - logo_height/2,
-                                      0.95f, PhysicsMaterial::make(1.0f, 0.0f, 0.0f));
+                                      0.95f, PhysicsMaterial(1.0f, 0.0f, 0.0f));
 
                 ball->getPhysicsBody()->setMass(1.0);
                 ball->getPhysicsBody()->setMoment(PHYSICS_INFINITY);
@@ -396,7 +423,7 @@ void PhysicsDemoLogoSmash::onEnter()
     }
 
 
-    auto bullet = makeBall(400, 0, 10, PhysicsMaterial::make(PHYSICS_INFINITY, 0, 0));
+    auto bullet = makeBall(400, 0, 10, PhysicsMaterial(PHYSICS_INFINITY, 0, 0));
     bullet->getPhysicsBody()->setVelocity(Point(400, 0));
 
     bullet->setPosition(Point(-1000, VisibleRect::getVisibleRect().size.height/2));
@@ -427,7 +454,7 @@ void PhysicsDemoPyramidStack::onEnter()
     {
 		for(int j=0; j<=i; j++)
         {
-			addGrossiniAtPosition(VisibleRect::bottom() + Point((i/2 - j) * 11, (14 - i) * 23 + 100), 0.2);
+			addGrossiniAtPosition(VisibleRect::bottom() + Point((i/2 - j) * 11, (14 - i) * 23 + 100), 0.2f);
 		}
 	}
 }
@@ -644,7 +671,7 @@ void PhysicsDemoRayCast::update(float delta)
             break;
     }
 
-    _angle += 0.25f * M_PI / 180.0f;
+    _angle += 0.25f * (float)M_PI / 180.0f;
 }
 
 void PhysicsDemoRayCast::onTouchesEnded(const std::vector<Touch*>& touches, Event* event)
@@ -687,18 +714,6 @@ void PhysicsDemoJoints::onEnter()
 
 }
 
-void PhysicsDemoJoints::onTouchesEnded(const std::vector<Touch*>& touches, Event* event)
-{
-    //Add a new body/atlas sprite at the touched location
-
-    for( auto &touch: touches)
-    {
-        auto location = touch->getLocation();
-
-
-    }
-}
-
 std::string PhysicsDemoJoints::title()
 {
     return "Joints";

samples/Cpp/TestCpp/Classes/PhysicsTest/PhysicsTest.h

@@ -37,13 +37,18 @@ class PhysicsDemo : public BaseTest
     void toggleDebugCallback(Object* sender);
 
     void addGrossiniAtPosition(Point p, float scale = 1.0);
-    Sprite* makeBall(float x, float y, float radius, PhysicsMaterial material = {1.0f, 1.0f, 1.0f});
-    Sprite* makeBox(float x, float y, Size size, PhysicsMaterial material = {1.0f, 1.0f, 1.0f});
-    Sprite* makeTriangle(float x, float y, Size size, PhysicsMaterial material = {1.0f, 1.0f, 1.0f});
+    Sprite* makeBall(float x, float y, float radius, PhysicsMaterial material = PhysicsMaterial(1.0f, 1.0f, 1.0f));
+    Sprite* makeBox(float x, float y, Size size, PhysicsMaterial material = PhysicsMaterial(1.0f, 1.0f, 1.0f));
+    Sprite* makeTriangle(float x, float y, Size size, PhysicsMaterial material = PhysicsMaterial(1.0f, 1.0f, 1.0f));
+
+    void onTouchesBegan(const std::vector<Touch*>& touches, Event* event) override;
+    void onTouchesMoved(const std::vector<Touch*>& touches, Event* event) override;
+    void onTouchesEnded(const std::vector<Touch*>& touches, Event* event) override;
 
 protected:
     Texture2D* _spriteTexture;    // weak ref
     SpriteBatchNode* _ball;
+    DrawNode* _mouse;
 };
 
 class PhysicsDemoClickAdd : public PhysicsDemo
@@ -99,10 +104,15 @@ class PhysicsDemoRayCast : public PhysicsDemo
 
 class PhysicsDemoJoints : public PhysicsDemo
 {
+public:
+    PhysicsDemoJoints();
+
 public:
     void onEnter() override;
     std::string title() override;
-    void onTouchesEnded(const std::vector<Touch*>& touches, Event* event) override;
+
+private:
+    PhysicsShape* _touchesShape;
 };
 
 #endif