/**************************************************************************** Copyright (c) 2008-2010 Ricardo Quesada Copyright (c) 2010-2012 cocos2d-x.org Copyright (c) 2011 Zynga Inc. Copyright (c) 2013-2014 Chukong Technologies Inc. http://www.cocos2d-x.org Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ****************************************************************************/ #include "CCParallaxNode.h" #include "ccCArray.h" NS_CC_BEGIN class PointObject : public Ref { public: static PointObject * create(Point ratio, Point offset) { PointObject *ret = new PointObject(); ret->initWithPoint(ratio, offset); ret->autorelease(); return ret; } bool initWithPoint(Point ratio, Point offset) { _ratio = ratio; _offset = offset; _child = nullptr; return true; } inline const Point& getRatio() const { return _ratio; }; inline void setRatio(const Point& ratio) { _ratio = ratio; }; inline const Point& getOffset() const { return _offset; }; inline void setOffset(const Point& offset) { _offset = offset; }; inline Node* getChild() const { return _child; }; inline void setChild(Node* child) { _child = child; }; private: Point _ratio; Point _offset; Node *_child; // weak ref }; ParallaxNode::ParallaxNode() { _parallaxArray = ccArrayNew(5); _lastPosition = Point(-100,-100); } ParallaxNode::~ParallaxNode() { if( _parallaxArray ) { ccArrayFree(_parallaxArray); _parallaxArray = nullptr; } } ParallaxNode * ParallaxNode::create() { ParallaxNode *ret = new ParallaxNode(); ret->autorelease(); return ret; } void ParallaxNode::addChild(Node * child, int zOrder, int tag) { CC_UNUSED_PARAM(zOrder); CC_UNUSED_PARAM(child); CC_UNUSED_PARAM(tag); CCASSERT(0,"ParallaxNode: use addChild:z:parallaxRatio:positionOffset instead"); } void ParallaxNode::addChild(Node *child, int z, const Point& ratio, const Point& offset) { CCASSERT( child != nullptr, "Argument must be non-nil"); PointObject *obj = PointObject::create(ratio, offset); obj->setChild(child); ccArrayAppendObjectWithResize(_parallaxArray, (Ref*)obj); Point pos = this->absolutePosition(); pos.x = -pos.x + pos.x * ratio.x + offset.x; pos.y = -pos.y + pos.y * ratio.y + offset.y; child->setPosition(pos); Node::addChild(child, z, child->getTag()); } void ParallaxNode::removeChild(Node* child, bool cleanup) { for( int i=0;i < _parallaxArray->num;i++) { PointObject *point = (PointObject*)_parallaxArray->arr[i]; if (point->getChild() == child) { ccArrayRemoveObjectAtIndex(_parallaxArray, i, true); break; } } Node::removeChild(child, cleanup); } void ParallaxNode::removeAllChildrenWithCleanup(bool cleanup) { ccArrayRemoveAllObjects(_parallaxArray); Node::removeAllChildrenWithCleanup(cleanup); } Point ParallaxNode::absolutePosition() { Point ret = _position; Node *cn = this; while (cn->getParent() != nullptr) { cn = cn->getParent(); ret = ret + cn->getPosition(); } return ret; } /* The positions are updated at visit because: - using a timer is not guaranteed that it will called after all the positions were updated - overriding "draw" will only precise if the children have a z > 0 */ void ParallaxNode::visit() { // Point pos = position_; // Point pos = [self convertToWorldSpace:Point::ZERO]; Point pos = this->absolutePosition(); if( ! pos.equals(_lastPosition) ) { for( int i=0; i < _parallaxArray->num; i++ ) { PointObject *point = (PointObject*)_parallaxArray->arr[i]; float x = -pos.x + pos.x * point->getRatio().x + point->getOffset().x; float y = -pos.y + pos.y * point->getRatio().y + point->getOffset().y; point->getChild()->setPosition(Point(x,y)); } _lastPosition = pos; } Node::visit(); } NS_CC_END