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axmol/cocos2dx/layers_scenes_transitions_n.../CCLayer.cpp

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/****************************************************************************
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2008-2010 Ricardo Quesada
Copyright (c) 2011 Zynga 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 <stdarg.h>
#include "CCLayer.h"
#include "touch_dispatcher/CCTouchDispatcher.h"
#include "keypad_dispatcher/CCKeypadDispatcher.h"
#include "CCAccelerometer.h"
#include "CCDirector.h"
#include "support/CCPointExtension.h"
#include "script_support/CCScriptSupport.h"
#include "shaders/CCShaderCache.h"
#include "shaders/CCGLProgram.h"
#include "shaders/ccGLStateCache.h"
#include "support/TransformUtils.h"
// extern
#include "kazmath/GL/matrix.h"
NS_CC_BEGIN
// CCLayer
CCLayer::CCLayer()
:m_bIsTouchEnabled(false)
,m_bIsAccelerometerEnabled(false)
,m_bIsKeypadEnabled(false)
,m_pScriptHandlerEntry(NULL)
{
setAnchorPoint(ccp(0.5f, 0.5f));
m_bIgnoreAnchorPointForPosition = true;
}
CCLayer::~CCLayer()
{
unregisterScriptTouchHandler();
}
bool CCLayer::init()
{
bool bRet = false;
do
{
CCDirector * pDirector;
CC_BREAK_IF(!(pDirector = CCDirector::sharedDirector()));
this->setContentSize(pDirector->getWinSize());
m_bIsTouchEnabled = false;
m_bIsAccelerometerEnabled = false;
// success
bRet = true;
} while(0);
return bRet;
}
CCLayer *CCLayer::node()
{
return CCLayer::create();
}
CCLayer *CCLayer::create()
{
CCLayer *pRet = new CCLayer();
if (pRet && pRet->init())
{
pRet->autorelease();
return pRet;
}
else
{
CC_SAFE_DELETE(pRet);
return NULL;
}
}
/// Touch and Accelerometer related
void CCLayer::registerWithTouchDispatcher()
{
CCDirector* pDirector = CCDirector::sharedDirector();
if (m_pScriptHandlerEntry)
{
if (m_pScriptHandlerEntry->isMultiTouches())
{
pDirector->getTouchDispatcher()->addStandardDelegate(this, 0);
LUALOG("[LUA] Add multi-touches event handler: %d", m_pScriptHandlerEntry->getHandler());
}
else
{
pDirector->getTouchDispatcher()->addTargetedDelegate(this,
m_pScriptHandlerEntry->getPriority(),
m_pScriptHandlerEntry->getSwallowsTouches());
LUALOG("[LUA] Add touch event handler: %d", m_pScriptHandlerEntry->getHandler());
}
return;
}
pDirector->getTouchDispatcher()->addStandardDelegate(this,0);
}
void CCLayer::registerScriptTouchHandler(int nHandler, bool bIsMultiTouches, int nPriority, bool bSwallowsTouches)
{
unregisterScriptTouchHandler();
m_pScriptHandlerEntry = CCTouchScriptHandlerEntry::entryWithHandler(nHandler, bIsMultiTouches, nPriority, bSwallowsTouches);
m_pScriptHandlerEntry->retain();
}
void CCLayer::unregisterScriptTouchHandler(void)
{
if (m_pScriptHandlerEntry)
{
m_pScriptHandlerEntry->release();
m_pScriptHandlerEntry = NULL;
}
}
int CCLayer::excuteScriptTouchHandler(int nEventType, CCTouch *pTouch)
{
return CCScriptEngineManager::sharedManager()->getScriptEngine()->executeTouchEvent(m_pScriptHandlerEntry->getHandler(), nEventType, pTouch);
}
int CCLayer::excuteScriptTouchHandler(int nEventType, CCSet *pTouches)
{
return CCScriptEngineManager::sharedManager()->getScriptEngine()->executeTouchesEvent(m_pScriptHandlerEntry->getHandler(), nEventType, pTouches);
}
/// isTouchEnabled getter
bool CCLayer::isTouchEnabled()
{
return m_bIsTouchEnabled;
}
/// isTouchEnabled setter
void CCLayer::setTouchEnabled(bool enabled)
{
if (m_bIsTouchEnabled != enabled)
{
m_bIsTouchEnabled = enabled;
if (m_bIsRunning)
{
if (enabled)
{
this->registerWithTouchDispatcher();
}
else
{
// have problems?
CCDirector* pDirector = CCDirector::sharedDirector();
pDirector->getTouchDispatcher()->removeDelegate(this);
}
}
}
}
/// isAccelerometerEnabled getter
bool CCLayer::isAccelerometerEnabled()
{
return m_bIsAccelerometerEnabled;
}
/// isAccelerometerEnabled setter
void CCLayer::setAccelerometerEnabled(bool enabled)
{
if (enabled != m_bIsAccelerometerEnabled)
{
m_bIsAccelerometerEnabled = enabled;
if (m_bIsRunning)
{
CCDirector* pDirector = CCDirector::sharedDirector();
if (enabled)
{
pDirector->getAccelerometer()->setDelegate(this);
}
else
{
pDirector->getAccelerometer()->setDelegate(NULL);
}
}
}
}
/// isKeypadEnabled getter
bool CCLayer::isKeypadEnabled()
{
return m_bIsKeypadEnabled;
}
/// isKeypadEnabled setter
void CCLayer::setKeypadEnabled(bool enabled)
{
if (enabled != m_bIsKeypadEnabled)
{
m_bIsKeypadEnabled = enabled;
if (m_bIsRunning)
{
CCDirector* pDirector = CCDirector::sharedDirector();
if (enabled)
{
pDirector->getKeypadDispatcher()->addDelegate(this);
}
else
{
pDirector->getKeypadDispatcher()->removeDelegate(this);
}
}
}
}
/// Callbacks
void CCLayer::onEnter()
{
CCDirector* pDirector = CCDirector::sharedDirector();
// register 'parent' nodes first
// since events are propagated in reverse order
if (m_bIsTouchEnabled)
{
this->registerWithTouchDispatcher();
}
// then iterate over all the children
CCNode::onEnter();
// add this layer to concern the Accelerometer Sensor
if (m_bIsAccelerometerEnabled)
{
pDirector->getAccelerometer()->setDelegate(this);
}
// add this layer to concern the kaypad msg
if (m_bIsKeypadEnabled)
{
pDirector->getKeypadDispatcher()->addDelegate(this);
}
}
void CCLayer::onExit()
{
CCDirector* pDirector = CCDirector::sharedDirector();
if( m_bIsTouchEnabled )
{
pDirector->getTouchDispatcher()->removeDelegate(this);
unregisterScriptTouchHandler();
}
// remove this layer from the delegates who concern Accelerometer Sensor
if (m_bIsAccelerometerEnabled)
{
pDirector->getAccelerometer()->setDelegate(NULL);
}
// remove this layer from the delegates who concern the kaypad msg
if (m_bIsKeypadEnabled)
{
pDirector->getKeypadDispatcher()->removeDelegate(this);
}
CCNode::onExit();
}
void CCLayer::onEnterTransitionDidFinish()
{
if (m_bIsAccelerometerEnabled)
{
CCDirector* pDirector = CCDirector::sharedDirector();
pDirector->getAccelerometer()->setDelegate(this);
}
CCNode::onEnterTransitionDidFinish();
}
bool CCLayer::ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent)
{
if (m_pScriptHandlerEntry)
{
return excuteScriptTouchHandler(CCTOUCHBEGAN, pTouch) == 0 ? false : true;
}
CC_UNUSED_PARAM(pTouch);
CC_UNUSED_PARAM(pEvent);
CCAssert(false, "Layer#ccTouchBegan override me");
return true;
}
void CCLayer::ccTouchMoved(CCTouch *pTouch, CCEvent *pEvent) {
if (m_pScriptHandlerEntry)
{
excuteScriptTouchHandler(CCTOUCHMOVED, pTouch);
return;
}
CC_UNUSED_PARAM(pTouch);
CC_UNUSED_PARAM(pEvent);
}
void CCLayer::ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent) {
if (m_pScriptHandlerEntry)
{
excuteScriptTouchHandler(CCTOUCHENDED, pTouch);
return;
}
CC_UNUSED_PARAM(pTouch);
CC_UNUSED_PARAM(pEvent);
}
void CCLayer::ccTouchCancelled(CCTouch *pTouch, CCEvent *pEvent) {
if (m_pScriptHandlerEntry)
{
excuteScriptTouchHandler(CCTOUCHCANCELLED, pTouch);
return;
}
CC_UNUSED_PARAM(pTouch);
CC_UNUSED_PARAM(pEvent);
}
void CCLayer::ccTouchesBegan(CCSet *pTouches, CCEvent *pEvent)
{
if (m_pScriptHandlerEntry)
{
excuteScriptTouchHandler(CCTOUCHBEGAN, pTouches);
return;
}
CC_UNUSED_PARAM(pTouches);
CC_UNUSED_PARAM(pEvent);
}
void CCLayer::ccTouchesMoved(CCSet *pTouches, CCEvent *pEvent)
{
if (m_pScriptHandlerEntry)
{
excuteScriptTouchHandler(CCTOUCHMOVED, pTouches);
return;
}
CC_UNUSED_PARAM(pTouches);
CC_UNUSED_PARAM(pEvent);
}
void CCLayer::ccTouchesEnded(CCSet *pTouches, CCEvent *pEvent)
{
if (m_pScriptHandlerEntry)
{
excuteScriptTouchHandler(CCTOUCHENDED, pTouches);
return;
}
CC_UNUSED_PARAM(pTouches);
CC_UNUSED_PARAM(pEvent);
}
void CCLayer::ccTouchesCancelled(CCSet *pTouches, CCEvent *pEvent)
{
if (m_pScriptHandlerEntry)
{
excuteScriptTouchHandler(CCTOUCHCANCELLED, pTouches);
return;
}
CC_UNUSED_PARAM(pTouches);
CC_UNUSED_PARAM(pEvent);
}
/// ColorLayer
CCLayerColor::CCLayerColor()
: m_cOpacity(0)
, m_tColor( ccc3(0,0,0) )
{
// default blend function
m_tBlendFunc.src = CC_BLEND_SRC;
m_tBlendFunc.dst = CC_BLEND_DST;
}
CCLayerColor::~CCLayerColor()
{
}
// Opacity and RGB color protocol
/// opacity getter
GLubyte CCLayerColor::getOpacity()
{
return m_cOpacity;
}
/// opacity setter
void CCLayerColor::setOpacity(GLubyte var)
{
m_cOpacity = var;
updateColor();
}
/// color getter
const ccColor3B& CCLayerColor::getColor()
{
return m_tColor;
}
/// color setter
void CCLayerColor::setColor(const ccColor3B& var)
{
m_tColor = var;
updateColor();
}
/// blendFunc getter
ccBlendFunc CCLayerColor::getBlendFunc()
{
return m_tBlendFunc;
}
/// blendFunc setter
void CCLayerColor::setBlendFunc(ccBlendFunc var)
{
m_tBlendFunc = var;
}
CCLayerColor * CCLayerColor::layerWithColor(const ccColor4B& color, GLfloat width, GLfloat height)
{
return CCLayerColor::create(color,width,height);
}
CCLayerColor * CCLayerColor::create(const ccColor4B& color, GLfloat width, GLfloat height)
{
CCLayerColor * pLayer = new CCLayerColor();
if( pLayer && pLayer->initWithColor(color,width,height))
{
pLayer->autorelease();
return pLayer;
}
CC_SAFE_DELETE(pLayer);
return NULL;
}
CCLayerColor * CCLayerColor::layerWithColor(const ccColor4B& color)
{
return CCLayerColor::create(color);
}
CCLayerColor * CCLayerColor::create(const ccColor4B& color)
{
CCLayerColor * pLayer = new CCLayerColor();
if(pLayer && pLayer->initWithColor(color))
{
pLayer->autorelease();
return pLayer;
}
CC_SAFE_DELETE(pLayer);
return NULL;
}
bool CCLayerColor::init()
{
CCSize s = CCDirector::sharedDirector()->getWinSize();
return initWithColor(ccc4(0,0,0,0), s.width, s.height);
}
bool CCLayerColor::initWithColor(const ccColor4B& color, GLfloat w, GLfloat h)
{
if( CCLayer::init() ) {
// default blend function
m_tBlendFunc.src = GL_SRC_ALPHA;
m_tBlendFunc.dst = GL_ONE_MINUS_SRC_ALPHA;
m_tColor.r = color.r;
m_tColor.g = color.g;
m_tColor.b = color.b;
m_cOpacity = color.a;
for (int i = 0; i<sizeof(m_pSquareVertices) / sizeof( m_pSquareVertices[0]); i++ ) {
m_pSquareVertices[i].x = 0.0f;
m_pSquareVertices[i].y = 0.0f;
}
updateColor();
setContentSize(CCSizeMake(w, h));
setShaderProgram(CCShaderCache::sharedShaderCache()->programForKey(kCCShader_PositionColor));
}
return true;
}
bool CCLayerColor::initWithColor(const ccColor4B& color)
{
CCSize s = CCDirector::sharedDirector()->getWinSize();
this->initWithColor(color, s.width, s.height);
return true;
}
/// override contentSize
void CCLayerColor::setContentSize(CCSize size)
{
m_pSquareVertices[1].x = size.width;
m_pSquareVertices[2].y = size.height;
m_pSquareVertices[3].x = size.width;
m_pSquareVertices[3].y = size.height;
CCLayer::setContentSize(size);
}
void CCLayerColor::changeWidthAndHeight(GLfloat w ,GLfloat h)
{
this->setContentSize(CCSizeMake(w, h));
}
void CCLayerColor::changeWidth(GLfloat w)
{
this->setContentSize(CCSizeMake(w, m_tContentSize.height));
}
void CCLayerColor::changeHeight(GLfloat h)
{
this->setContentSize(CCSizeMake(m_tContentSize.width, h));
}
void CCLayerColor::updateColor()
{
for( unsigned int i=0; i < 4; i++ )
{
m_pSquareColors[i].r = m_tColor.r / 255.0f;
m_pSquareColors[i].g = m_tColor.g / 255.0f;
m_pSquareColors[i].b = m_tColor.b / 255.0f;
m_pSquareColors[i].a = m_cOpacity / 255.0f;
}
}
void CCLayerColor::draw()
{
CC_NODE_DRAW_SETUP();
ccGLEnableVertexAttribs( kCCVertexAttribFlag_Position | kCCVertexAttribFlag_Color );
//
// Attributes
//
glVertexAttribPointer(kCCVertexAttrib_Position, 2, GL_FLOAT, GL_FALSE, 0, m_pSquareVertices);
glVertexAttribPointer(kCCVertexAttrib_Color, 4, GL_FLOAT, GL_FALSE, 0, m_pSquareColors);
ccGLBlendFunc( m_tBlendFunc.src, m_tBlendFunc.dst );
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
CC_INCREMENT_GL_DRAWS(1);
}
//
// CCLayerGradient
//
CCLayerGradient* CCLayerGradient::layerWithColor(const ccColor4B& start, const ccColor4B& end)
{
return CCLayerGradient::create(start, end);
}
CCLayerGradient* CCLayerGradient::create(const ccColor4B& start, const ccColor4B& end)
{
CCLayerGradient * pLayer = new CCLayerGradient();
if( pLayer && pLayer->initWithColor(start, end))
{
pLayer->autorelease();
return pLayer;
}
CC_SAFE_DELETE(pLayer);
return NULL;
}
CCLayerGradient* CCLayerGradient::layerWithColor(const ccColor4B& start, const ccColor4B& end, const CCPoint& v)
{
return CCLayerGradient::create(start, end, v);
}
CCLayerGradient* CCLayerGradient::create(const ccColor4B& start, const ccColor4B& end, const CCPoint& v)
{
CCLayerGradient * pLayer = new CCLayerGradient();
if( pLayer && pLayer->initWithColor(start, end, v))
{
pLayer->autorelease();
return pLayer;
}
CC_SAFE_DELETE(pLayer);
return NULL;
}
bool CCLayerGradient::initWithColor(const ccColor4B& start, const ccColor4B& end)
{
return initWithColor(start, end, ccp(0, -1));
}
bool CCLayerGradient::initWithColor(const ccColor4B& start, const ccColor4B& end, const CCPoint& v)
{
m_endColor.r = end.r;
m_endColor.g = end.g;
m_endColor.b = end.b;
m_cEndOpacity = end.a;
m_cStartOpacity = start.a;
m_AlongVector = v;
m_bCompressedInterpolation = true;
return CCLayerColor::initWithColor(ccc4(start.r, start.g, start.b, 255));
}
void CCLayerGradient::updateColor()
{
CCLayerColor::updateColor();
float h = ccpLength(m_AlongVector);
if (h == 0)
return;
float c = sqrtf(2.0f);
CCPoint u = ccp(m_AlongVector.x / h, m_AlongVector.y / h);
// Compressed Interpolation mode
if (m_bCompressedInterpolation)
{
float h2 = 1 / ( fabsf(u.x) + fabsf(u.y) );
u = ccpMult(u, h2 * (float)c);
}
float opacityf = (float)m_cOpacity / 255.0f;
ccColor4F S = {
m_tColor.r / 255.0f,
m_tColor.g / 255.0f,
m_tColor.b / 255.0f,
m_cStartOpacity * opacityf / 255.0f
};
ccColor4F E = {
m_endColor.r / 255.0f,
m_endColor.g / 255.0f,
m_endColor.b / 255.0f,
m_cEndOpacity * opacityf / 255.0f
};
// (-1, -1)
m_pSquareColors[0].r = E.r + (S.r - E.r) * ((c + u.x + u.y) / (2.0f * c));
m_pSquareColors[0].g = E.g + (S.g - E.g) * ((c + u.x + u.y) / (2.0f * c));
m_pSquareColors[0].b = E.b + (S.b - E.b) * ((c + u.x + u.y) / (2.0f * c));
m_pSquareColors[0].a = E.a + (S.a - E.a) * ((c + u.x + u.y) / (2.0f * c));
// (1, -1)
m_pSquareColors[1].r = E.r + (S.r - E.r) * ((c - u.x + u.y) / (2.0f * c));
m_pSquareColors[1].g = E.g + (S.g - E.g) * ((c - u.x + u.y) / (2.0f * c));
m_pSquareColors[1].b = E.b + (S.b - E.b) * ((c - u.x + u.y) / (2.0f * c));
m_pSquareColors[1].a = E.a + (S.a - E.a) * ((c - u.x + u.y) / (2.0f * c));
// (-1, 1)
m_pSquareColors[2].r = E.r + (S.r - E.r) * ((c + u.x - u.y) / (2.0f * c));
m_pSquareColors[2].g = E.g + (S.g - E.g) * ((c + u.x - u.y) / (2.0f * c));
m_pSquareColors[2].b = E.b + (S.b - E.b) * ((c + u.x - u.y) / (2.0f * c));
m_pSquareColors[2].a = E.a + (S.a - E.a) * ((c + u.x - u.y) / (2.0f * c));
// (1, 1)
m_pSquareColors[3].r = E.r + (S.r - E.r) * ((c - u.x - u.y) / (2.0f * c));
m_pSquareColors[3].g = E.g + (S.g - E.g) * ((c - u.x - u.y) / (2.0f * c));
m_pSquareColors[3].b = E.b + (S.b - E.b) * ((c - u.x - u.y) / (2.0f * c));
m_pSquareColors[3].a = E.a + (S.a - E.a) * ((c - u.x - u.y) / (2.0f * c));
}
const ccColor3B& CCLayerGradient::getStartColor()
{
return m_tColor;
}
void CCLayerGradient::setStartColor(const ccColor3B& color)
{
setColor(color);
}
void CCLayerGradient::setEndColor(const ccColor3B& color)
{
m_endColor = color;
updateColor();
}
const ccColor3B& CCLayerGradient::getEndColor()
{
return m_endColor;
}
void CCLayerGradient::setStartOpacity(GLubyte o)
{
m_cStartOpacity = o;
updateColor();
}
GLubyte CCLayerGradient::getStartOpacity()
{
return m_cStartOpacity;
}
void CCLayerGradient::setEndOpacity(GLubyte o)
{
m_cEndOpacity = o;
updateColor();
}
GLubyte CCLayerGradient::getEndOpacity()
{
return m_cEndOpacity;
}
void CCLayerGradient::setVector(const CCPoint& var)
{
m_AlongVector = var;
updateColor();
}
const CCPoint& CCLayerGradient::getVector()
{
return m_AlongVector;
}
bool CCLayerGradient::isCompressedInterpolation()
{
return m_bCompressedInterpolation;
}
void CCLayerGradient::setCompressedInterpolation(bool compress)
{
m_bCompressedInterpolation = compress;
updateColor();
}
/// MultiplexLayer
CCLayerMultiplex::CCLayerMultiplex()
: m_nEnabledLayer(0)
, m_pLayers(NULL)
{
}
CCLayerMultiplex::~CCLayerMultiplex()
{
CC_SAFE_RELEASE(m_pLayers);
}
CCLayerMultiplex * CCLayerMultiplex::layerWithLayers(CCLayer * layer, ...)
{
va_list args;
va_start(args,layer);
CCLayerMultiplex * pMultiplexLayer = new CCLayerMultiplex();
if(pMultiplexLayer && pMultiplexLayer->initWithLayers(layer, args))
{
pMultiplexLayer->autorelease();
va_end(args);
return pMultiplexLayer;
}
va_end(args);
CC_SAFE_DELETE(pMultiplexLayer);
return NULL;
}
CCLayerMultiplex * CCLayerMultiplex::create(CCLayer * layer, ...)
{
va_list args;
va_start(args,layer);
CCLayerMultiplex * pMultiplexLayer = new CCLayerMultiplex();
if(pMultiplexLayer && pMultiplexLayer->initWithLayers(layer, args))
{
pMultiplexLayer->autorelease();
va_end(args);
return pMultiplexLayer;
}
va_end(args);
CC_SAFE_DELETE(pMultiplexLayer);
return NULL;
}
CCLayerMultiplex * CCLayerMultiplex::layerWithLayer(CCLayer* layer)
{
return CCLayerMultiplex::createWithLayer(layer);
}
CCLayerMultiplex * CCLayerMultiplex::createWithLayer(CCLayer* layer)
{
return CCLayerMultiplex::create(layer, NULL);
}
void CCLayerMultiplex::addLayer(CCLayer* layer)
{
CCAssert(m_pLayers, "");
m_pLayers->addObject(layer);
}
bool CCLayerMultiplex::initWithLayers(CCLayer *layer, va_list params)
{
m_pLayers = CCArray::create(5);
m_pLayers->retain();
m_pLayers->addObject(layer);
CCLayer *l = va_arg(params,CCLayer*);
while( l ) {
m_pLayers->addObject(l);
l = va_arg(params,CCLayer*);
}
m_nEnabledLayer = 0;
this->addChild((CCNode*)m_pLayers->objectAtIndex(m_nEnabledLayer));
return true;
}
void CCLayerMultiplex::switchTo(unsigned int n)
{
CCAssert( n < m_pLayers->count(), "Invalid index in MultiplexLayer switchTo message" );
this->removeChild((CCNode*)m_pLayers->objectAtIndex(m_nEnabledLayer), true);
m_nEnabledLayer = n;
this->addChild((CCNode*)m_pLayers->objectAtIndex(n));
}
void CCLayerMultiplex::switchToAndReleaseMe(unsigned int n)
{
CCAssert( n < m_pLayers->count(), "Invalid index in MultiplexLayer switchTo message" );
this->removeChild((CCNode*)m_pLayers->objectAtIndex(m_nEnabledLayer), true);
//[layers replaceObjectAtIndex:enabledLayer withObject:[NSNull null]];
m_pLayers->replaceObjectAtIndex(m_nEnabledLayer, NULL);
m_nEnabledLayer = n;
this->addChild((CCNode*)m_pLayers->objectAtIndex(n));
}
NS_CC_END
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