fixed bug #21800 [CppTest]Node: Scene3D when player outof terrain app will no response.

cocos/3d/CCRay.cpp

@@ -29,6 +29,11 @@ Ray::Ray()
 {
 }
 
+Ray::Ray(const Ray& ray)
+{
+    set(ray._origin, ray._direction);
+}
+
 Ray::Ray(const Vec3& origin, const Vec3& direction)
 {
     set(origin, direction);

cocos/3d/CCTerrain.cpp

@@ -541,8 +541,12 @@ cocos2d::Vec3 Terrain::getIntersectionPoint(const Ray & ray) const
     }
 }
 
-bool Terrain::getIntersectionPoint(const Ray & ray, Vec3 & intersectionPoint) const
+bool Terrain::getIntersectionPoint(const Ray & ray_, Vec3 & intersectionPoint) const
 {
+	// convert ray from world space to local space
+    Ray ray(ray_);
+    getWorldToNodeTransform().transformPoint(&(ray._origin));
+
     std::set<Chunk *> closeList;
     Vec2 start = Vec2(ray._origin.x,ray._origin.z);
     Vec2 dir = Vec2(ray._direction.x,ray._direction.z);

tests/cpp-tests/Classes/Scene3DTest/Scene3DTest.cpp

@@ -869,53 +869,28 @@ void Scene3DTestScene::onTouchEnd(Touch* touch, Event* event)
     if(_player)
     {
         Vec3 nearP(location.x, location.y, 0.0f), farP(location.x, location.y, 1.0f);
-        // first, convert screen touch location to the world location on near and far plane
+        // convert screen touch location to the world location on near and far plane
         auto size = Director::getInstance()->getWinSize();
         camera->unprojectGL(size, &nearP, &nearP);
         camera->unprojectGL(size, &farP, &farP);
-        // second, convert world location to terrain's local position on near/far plane
-        auto worldToNodeMat = _terrain->getNodeToWorldTransform();
-        worldToNodeMat.inverse();
-        worldToNodeMat.transformPoint(&nearP);
-        worldToNodeMat.transformPoint(&farP);
-        // create a ray from point which on near plane to point which on far plane
         Vec3 dir = farP - nearP;
         dir.normalize();
-        Vec3 rayStep = 15*dir;
+        Vec3 collisionPoint;
-        Vec3 rayPos =  nearP;
+        bool isInTerrain = _terrain->getIntersectionPoint(Ray(nearP, dir), collisionPoint);
-        Vec3 rayStartPosition = nearP;
+        if (!isInTerrain)
-        Vec3 lastRayPosition =rayPos;
-        rayPos += rayStep;
-        // Linear search - Loop until find a point inside and outside the terrain Vector3
-        float height = _terrain->getHeight(rayPos.x,rayPos.z);
-        
-        while (rayPos.y > height)
         {
-            lastRayPosition = rayPos;
+            _player->idle();
-            rayPos += rayStep;
-            height = _terrain->getHeight(rayPos.x,rayPos.z);
         }
-        
+        else
-        Vec3 startPosition = lastRayPosition;
-        Vec3 endPosition = rayPos;
-        
-        for (int i= 0; i< 32; i++)
         {
-            // Binary search pass
+            dir = collisionPoint - _player->getPosition3D();
-            Vec3 middlePoint = (startPosition + endPosition) * 0.5f;
+            dir.y = 0;
-            if (middlePoint.y < height)
+            dir.normalize();
-                endPosition = middlePoint;
+            _player->_headingAngle =  -1*acos(dir.dot(Vec3(0,0,-1)));
-            else
+            dir.cross(dir,Vec3(0,0,-1),&_player->_headingAxis);
-                startPosition = middlePoint;
+            _player->_targetPos=collisionPoint;
+            _player->forward();
         }
-        Vec3 collisionPoint = (startPosition + endPosition) * 0.5f;
-        dir = collisionPoint - _player->getPosition3D();
-        dir.y = 0;
-        dir.normalize();
-        _player->_headingAngle =  -1*acos(dir.dot(Vec3(0,0,-1)));
-        dir.cross(dir,Vec3(0,0,-1),&_player->_headingAxis);
-        _player->_targetPos=collisionPoint;
-        _player->forward();
     }
     event->stopPropagation();
 }