coco2dx-动作（Action）原理二 动作分类详解

标签：

http://blog.csdn.net/zh13544539220/article/details/45223863

上篇文章是关于Action的工作流程和ActionManager的执行原理，本文说说Action的分类和具体的设计

动作类型的分类：

void CallFunc::execute() {
		    if (_callFunc) {
		        (_selectorTarget->*_callFunc)();
		    } else if( _function ){
		        _function();
		    }
		}

void CallFuncN::execute() {
		    if (_callFuncN) {
		        (_selectorTarget->*_callFuncN)(_target);
		    }
		    else if (_functionN) {
		        _functionN(_target);
		    }
		}	

void __CCCallFuncND::execute()
		{
		    if (_callFuncND)
		    {
		        (_selectorTarget->*_callFuncND)(_target, _data);
		    }
		}

void __CCCallFuncO::execute()
		{
		    if (_callFuncO) {
		        (_selectorTarget->*_callFuncO)(_object);
		    }
		}

void RemoveSelf::update(float time) {
			CC_UNUSED_PARAM(time);
			_target->removeFromParentAndCleanup(_isNeedCleanUp);
		}

MoveBy* MoveBy::reverse() const
		{
		    return MoveBy::create(_duration, Vec2( -_positionDelta.x, -_positionDelta.y));
		}

void MoveTo::startWithTarget(Node *target)
		{
	    	MoveBy::startWithTarget(target);
	    	_positionDelta = _endPosition - target->getPosition();
		}	

Speed* Speed::create(ActionInterval* action, float speed)
	{
	    Speed *ret = new (std::nothrow) Speed();
	    if (ret && ret->initWithAction(action, speed))
	    {
	        ret->autorelease();
	        return ret;
	    }
	    CC_SAFE_DELETE(ret);
	    return nullptr;
	}
	void Speed::step(float dt)
	{
	    _innerAction->step(dt * _speed);
	}

void EaseIn::update(float time)
	{
	    _inner->update(tweenfunc::easeIn(time, _rate));
	}

Spawn* Spawn::create(const Vector<FiniteTimeAction*>& arrayOfActions)
	{
	    Spawn* ret = nullptr;
	    do 
	    {
	        auto count = arrayOfActions.size();
	        CC_BREAK_IF(count == 0);
	        auto prev = arrayOfActions.at(0);
	        if (count > 1)
	        {
	            for (int i = 1; i < arrayOfActions.size(); ++i)
	            {
	                prev = createWithTwoActions(prev, arrayOfActions.at(i));
	            }
	        }
	        else
	        {
	            // If only one action is added to Spawn, make up a Spawn by adding a simplest finite time action.
	            prev = createWithTwoActions(prev, ExtraAction::create());
	        }
	        ret = static_cast<Spawn*>(prev);
	    }while (0);


	    return ret;
	}

coco2dx-动作（Action）原理二 动作分类详解

标签：

原文地址：http://blog.csdn.net/zh13544539220/article/details/45315113