axmol/cocos2dx/actions/CCAction.cpp

/****************************************************************************
Copyright (c) 2010 cocos2d-x.org

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****************************************************************************/

#include "CCAction.h"
#include "CCActionInterval.h"
#include "ccMacros.h"
#include "CCNode.h"
#include "CGPointExtension.h"
#include "CCDirector.h"
#include "NSZone.h"

namespace   cocos2d {
//
// Action Base Class
//

CCAction::CCAction()
:m_pOriginalTarget(NULL)
,m_pTarget(NULL)
,m_nTag(kCCActionTagInvalid)
{
}
CCAction::~CCAction()
{
	CCLOGINFO("cocos2d: deallocing");
}
CCAction * CCAction::action()
{
	CCAction * pRet = new CCAction();
	pRet->autorelease();
	return pRet;
}

char * CCAction::description()
{
	char *ret = new char[100] ;
	sprintf(ret,"<CCAction | Tag = %d>", m_nTag);
	return ret;
}
NSObject* CCAction::copyWithZone(NSZone *pZone)
{
	NSZone *pNewZone = NULL;
	CCAction *pRet = NULL;
	if (pZone && pZone->m_pCopyObject)
	{
		pRet = (CCAction*)(pZone->m_pCopyObject);
	}
	else
	{
		pRet = new CCAction();
		pZone = pNewZone = new NSZone(pRet);
	}
	//copy member data
	pRet->m_nTag = m_nTag;
	CCX_SAFE_DELETE(pNewZone);
	return pRet;
}

void CCAction::startWithTarget(CCNode *aTarget)
{
	m_pOriginalTarget = m_pTarget = aTarget;
}

void CCAction::stop()
{
	m_pTarget = NULL;
}

bool CCAction::isDone()
{
	return true;
}

void CCAction::step(ccTime dt)
{
	CCLOG("[Action step]. override me");
}

void CCAction::update(ccTime time)
{
	CCLOG("[Action update]. override me");
}

//
// FiniteTimeAction
//

CCFiniteTimeAction *CCFiniteTimeAction::reverse()
{
	CCLOG("cocos2d: FiniteTimeAction#reverse: Implement me");
	return NULL;
}

//
// Speed
//
CCSpeed::~CCSpeed()
{
	CCX_SAFE_RELEASE(m_pOther);
}

CCSpeed * CCSpeed::actionWithAction(CCActionInterval *pAction, float fRate)
{
	CCSpeed *pRet = new CCSpeed();
	if (pRet && pRet->initWithAction(pAction, fRate))
	{
		pRet->autorelease();
		return pRet;
	}
	CCX_SAFE_DELETE(pRet)
	return NULL;
}

bool CCSpeed::initWithAction(CCActionInterval *pAction, float fRate)
{
	assert(pAction != NULL);
	pAction->retain();
	m_pOther = pAction;
	m_fSpeed = fRate;	
	return true;
}

NSObject *CCSpeed::copyWithZone(NSZone *pZone)
{
	NSZone* pNewZone = NULL;
	CCSpeed* pRet = NULL;
	if(pZone && pZone->m_pCopyObject) //in case of being called at sub class
	{
		pRet = (CCSpeed*)(pZone->m_pCopyObject);
	}
	else
	{
		pRet = new CCSpeed();
		pZone = pNewZone = new NSZone(pRet);
	}
	CCAction::copyWithZone(pZone);

	pRet->initWithAction( (CCActionInterval*)(m_pOther->copy()->autorelease()) , m_fSpeed );
	
	CCX_SAFE_DELETE(pNewZone);
	return pRet;
}

void CCSpeed::startWithTarget(CCNode* pTarget)
{
	CCAction::startWithTarget(pTarget);
	m_pOther->startWithTarget(pTarget);
}

void CCSpeed::stop()
{
	m_pOther->stop();
	CCAction::stop();
}

void CCSpeed::step(ccTime dt)
{
    m_pOther->step(dt * m_fSpeed);
}

bool CCSpeed::isDone()
{
	return m_pOther->isDone();
}

CCActionInterval *CCSpeed::reverse()
{
	 return (CCActionInterval*)(CCSpeed::actionWithAction(m_pOther->reverse(), m_fSpeed));
}

//
// Follow
//
CCFollow::~CCFollow()
{
	m_pobFollowedNode->release();
}

CCFollow *CCFollow::actionWithTarget(CCNode *pFollowedNode)
{
	CCFollow *pRet = new CCFollow();
	if (pRet && pRet->initWithTarget(pFollowedNode))
	{
		pRet->autorelease();
		return pRet;
	}
	CCX_SAFE_DELETE(pRet)
	return NULL;
}
CCFollow *CCFollow::actionWithTarget(CCNode *pFollowedNode, CGRect rect)
{
	CCFollow *pRet = new CCFollow();
	if (pRet && pRet->initWithTarget(pFollowedNode, rect))
	{
		pRet->autorelease();
		return pRet;
	}
	CCX_SAFE_DELETE(pRet)
	return NULL;
}

bool CCFollow::initWithTarget(CCNode *pFollowedNode)
{
	assert(pFollowedNode != NULL);
	pFollowedNode->retain();
	m_pobFollowedNode = pFollowedNode;
	m_bBoundarySet = false;
	m_bBoundaryFullyCovered = false;

	CGSize winSize = CCDirector::sharedDirector()->getWinSize();
	m_obFullScreenSize = CGPointMake(winSize.width, winSize.height);
	m_obHalfScreenSize = ccpMult(m_obFullScreenSize, 0.5f);
	return true;
}

bool CCFollow::initWithTarget(CCNode *pFollowedNode, CGRect rect)
{
	assert(pFollowedNode != NULL);
	pFollowedNode->retain();
	m_pobFollowedNode = pFollowedNode;
	m_bBoundarySet = true;
	m_bBoundaryFullyCovered = false;

	CGSize winSize = CCDirector::sharedDirector()->getWinSize();
	m_obFullScreenSize = CGPointMake(winSize.width, winSize.height);
	m_obHalfScreenSize = ccpMult(m_obFullScreenSize, 0.5f);

	m_fLeftBoundary = -((rect.origin.x+rect.size.width) - m_obFullScreenSize.x);
	m_fRightBoundary = -rect.origin.x ;
	m_fTopBoundary = -rect.origin.y;
	m_fBottomBoundary = -((rect.origin.y+rect.size.height) - m_obFullScreenSize.y);

	if(m_fRightBoundary < m_fLeftBoundary)
	{
		// screen width is larger than world's boundary width
		//set both in the middle of the world
		m_fRightBoundary = m_fLeftBoundary = (m_fLeftBoundary + m_fRightBoundary) / 2;
	}
	if(m_fTopBoundary < m_fBottomBoundary)
	{
		// screen width is larger than world's boundary width
		//set both in the middle of the world
		m_fTopBoundary = m_fBottomBoundary = (m_fTopBoundary + m_fBottomBoundary) / 2;
	}

	if( (m_fTopBoundary == m_fBottomBoundary) && (m_fLeftBoundary == m_fRightBoundary) )
	{
		m_bBoundaryFullyCovered = true;
	}
	return true;
}
NSObject *CCFollow::copyWithZone(NSZone *pZone)
{
	NSZone *pNewZone = NULL;
	CCFollow *pRet = NULL;
	if(pZone && pZone->m_pCopyObject) //in case of being called at sub class
	{
		pRet = (CCFollow*)(pZone->m_pCopyObject);
	}
	else
	{
		pRet = new CCFollow();
		pZone = pNewZone = new NSZone(pRet);
	}
	CCAction::copyWithZone(pZone);
	// copy member data
	pRet->m_nTag = m_nTag;
	CCX_SAFE_DELETE(pNewZone);
	return pRet;
}
void CCFollow::step(ccTime dt)
{
#define CLAMP(x,y,z) MIN(MAX(x,y),z)

	if(m_bBoundarySet)
	{
		// whole map fits inside a single screen, no need to modify the position - unless map boundaries are increased
		if(m_bBoundaryFullyCovered)
			return;

		CGPoint tempPos = ccpSub( m_obHalfScreenSize, m_pobFollowedNode->getPosition());

		m_pTarget->setPosition(ccp(CLAMP(tempPos.x, m_fLeftBoundary, m_fRightBoundary), 
								   CLAMP(tempPos.y, m_fBottomBoundary, m_fTopBoundary)));
	}
	else
	{
		m_pTarget->setPosition(ccpSub(m_obHalfScreenSize, m_pobFollowedNode->getPosition()));
	}
#undef CLAMP
}

bool CCFollow::isDone()
{
	return ( !m_pobFollowedNode->getIsRunning() );
}
void CCFollow::stop()
{
	m_pTarget = NULL;
	CCAction::stop();
}

}//namespace   cocos2d