axmol/cocos2dx/CCDirector.cpp

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

http://www.cocos2d-x.org

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

#include "CCDirector.h"
#include "CCScene.h"
#include "cocoa/NSMutableArray.h"
#include "CCScheduler.h"
#include "ccMacros.h"
#include "platform/platform.h"
#include "Cocos2dDefine.h"
#include "touch_dispatcher/CCTouchDispatcher.h"
#include "support/opengl_support/glu.h"
#include "support/CGPointExtension.h"
#include "CCTransition.h"

#include <string>

using namespace std;

// singleton stuff
static CCDirector *pobSharedDirector = NULL;

#define kDefaultFPS		60  // 60 frames per second
extern string cocos2dVersion(void);

CCDirector* CCDirector::getSharedDirector(void)
{
	if (! pobSharedDirector)
	{
		//
		// Default Director is TimerDirector
		// 
		//pobSharedDirector = new CCTimerDirector();
		//pobSharedDirector->init();

		// we now only support CCDisplayLinkDirector
		pobSharedDirector = new CCDisplayLinkDirector();
		pobSharedDirector->init();
	}

	return pobSharedDirector;
}

bool CCDirector::setDierectorType(ccDirectorType obDirectorType)
{
	assert(pobSharedDirector==NULL);

	/*
	switch (obDirectorType)
	{
	case CCDirectorTypeNSTimer:
		CCTimerDirector::getSharedDirector();
		break;
	case CCDirectorTypeMainLoop:
		CCFastDirector::getSharedDirector();
		break;
	case CCDirectorTypeThreadMainLoop:
		CCThreadedFastDirector::getSharedDirector();
		break;
	case CCDirectorTypeDiaplayLink:
		CCDisplayLinkDirector::getSharedDirector();
		break;
	default:
        assert(false);
		break;
	}
	*/

    // we only support CCDisplayLinkDirector
	CCDirector::getSharedDirector();

	return true;
}

CCDirector* CCDirector::init(void)
{
	CCLOG("cocos2d: %s", cocos2dVersion());
	// todo adding a description of type
	CCLOG("cocos2d: Using Director Type: ");

	// default values
    m_ePixelFormat = kCCPixelFormatDefault;
	m_eDepthBufferFormat = kCCDepthBufferNone; // 0

	// scenes
	m_pRunningScene = NULL;
	m_pNextScene = NULL;

	m_dOldAnimationInterval = m_dAnimationInterval = 1.0 / kDefaultFPS;

	m_pobScenesStack = new NSMutableArray<CCScene*>(10);

	// landspace
	m_eDeviceOrientation = CCDeviceOrientationPortrait;

	// FPS
	m_bDisplayFPS = false;
	m_nFrames = 0;

	// paused ?
	m_bPaused = false;

    m_fContentScaleFactor = 1;
	m_obScreenSize = m_obSurfaceSize = CGSizeZero;

	return this;
}

CCDirector::~CCDirector(void)
{
	CCLOGINFO("cocos2d: deallocing %p", this);

#if CC_DIRECTOR_FAST_FPS
	//todo
//    FPSLabel->release();
#endif 
    
	m_pRunningScene->release();
	m_pobScenesStack->release();

	pobSharedDirector = NULL;
}

void CCDirector::setGLDefaultValues(void)
{
	// This method SHOULD be called only after openGLView_ was initialized
	assert(m_pobOpenGLView);

	setAlphaBlending(true);
	setDepthTest(true);
	setProjection(kCCDirectorProjectionDefault);

	// set other opengl default values
	glClearColor(0.0f, 0.0f, 0.0f, 1.0f);

#if CC_DIRECTOR_FAST_FPS
	// todo: add needed source code
#endif
}

// main loop
void CCDirector::mainLoop(void)
{
	// calculate "global" dt
	calculateDeltaTime();

	//tick before glClear: issue #533
	if (! m_bPaused)
	{
		CCScheduler::getSharedScheduler()->tick(m_fDeltaTime);
	}

	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    /* to avoid flickr, nextScene MUST be here: after tick and before draw.
	 XXX: Which bug is this one. It seems that it can't be reproduced with v0.9 */
	if (m_pNextScene)
	{
		setNextScene();
	}

	glPushMatrix();

	applyLandspace();

	// By default enable VertexArray, ColorArray, TextureCoordArray and Texture2D
	CC_ENABLE_DEFAULT_GL_STATES();

	// draw the scene
	m_pRunningScene->visit();
	if (m_bDisplayFPS)
	{
		showFPS();
	}

#if CC_ENABLE_PROFILERS
	showProfilers();
#endif

	CC_DISABLE_DEFAULT_GL_STATES();

	glPopMatrix();

	// swap buffers
	m_pobOpenGLView->swapBuffers();
}

void CCDirector::calculateDeltaTime(void)
{
    struct timeval now;

	if (gettimeofday(&now, NULL) != 0)
	{
		CCLOG("error in gettimeofday");
        m_fDeltaTime = 0;
		return;
	}

	// new delta time
	if (m_bNextDeltaTimeZero)
	{
		m_fDeltaTime = 0;
		m_bNextDeltaTimeZero = false;
	}
	else 
	{
		m_fDeltaTime = (now.tv_sec - m_sLastUpdate.tv_sec) + (now.tv_usec - m_sLastUpdate.tv_usec) / 1000000.0f;
		m_fDeltaTime = MAX(0, m_fDeltaTime);
	}

	m_sLastUpdate = now;
}

// attribute

// m_pRunningScene
CCScene* CCDirector::getRunningScene(void)
{
	return m_pRunningScene;
}

// m_dAnimationInterval
double CCDirector::getAnimationInterval(void)
{
    return m_dAnimationInterval;
}

void CCDirector::setAnimationInterval(double dValue)
{
	CCLOG("cocos2d: Director#setAnimationInterval. Overrride me");
	assert(0);
}

// m_bDisplayFPS
bool CCDirector::isDisplayFPS(void)
{
	return m_bDisplayFPS;
}

void CCDirector::setDisplayFPS(bool bDisplayFPS)
{
	m_bDisplayFPS = bDisplayFPS;
}

// m_pobOpenGLView
EAGLView* CCDirector::getOpenGLView(void)
{
	return m_pobOpenGLView;
}

void CCDirector::setOpenGLView(EAGLView *pobOpenGLView)
{
	assert(pobOpenGLView);

	if (m_pobOpenGLView != pobOpenGLView)
	{
		// because EAGLView is not kind of NSObject
		delete m_pobOpenGLView(); // [openGLView_ release]
		m_pobOpenGLView = pobOpenGLView;

		// set size
		m_obScreenSize = pobOpenGLView->getSize();
		m_obSurfaceSize = CGSizeMake(m_obScreenSize.width * m_fContentScaleFactor,
			m_obScreenSize.height * m_fContentScaleFactor);

		CCTouchDispather *pTouchDispather = CCTouchDispather::getSharedDispatcher();
		m_pobOpenGLView->setTouchDelegate(pTouchDispather);
        pTouchDispather->setDispatchEvnents(true);

		setGLDefaultValues();
	}
}

// m_ePixelFormat
void CCDirector::setPixelFormat(tPixelFormat kPixelFormat)
{
	assert(! isOpenGLAttached());
	m_ePixelFormat = kPixelFormat;
}

tPixelFormat CCDirector::getPiexFormat(void)
{
	return m_ePixelFormat;
}

// m_bNextDeltaTimeZero
bool CCDirector::isNextDeltaTimeZero(void)
{
	return m_bNextDeltaTimeZero;
}

void CCDirector::setNextDeltaTimeZero(bool bNextDeltaTimeZero)
{
	m_bNextDeltaTimeZero = bNextDeltaTimeZero;
}

// m_eDeviceOrientation
void CCDirector::setDeviceOrientation(ccDeviceOrientation kDeviceOrientation)
{
	if (m_eDeviceOrientation != kDeviceOrientation)
	{
		m_eDeviceOrientation = kDeviceOrientation;
		// how to implementation????
		/*
        switch( deviceOrientation_) {
			case CCDeviceOrientationPortrait:
				[[UIApplication sharedApplication] setStatusBarOrientation: UIInterfaceOrientationPortrait animated:NO];
				break;
			case CCDeviceOrientationPortraitUpsideDown:
				[[UIApplication sharedApplication] setStatusBarOrientation: UIInterfaceOrientationPortrait animated:NO];
				break;
			case CCDeviceOrientationLandscapeLeft:
				[[UIApplication sharedApplication] setStatusBarOrientation: UIInterfaceOrientationLandscapeRight animated:NO];
				break;
			case CCDeviceOrientationLandscapeRight:
				[[UIApplication sharedApplication] setStatusBarOrientation: UIInterfaceOrientationLandscapeLeft animated:NO];
				break;
			default:
				NSLog(@"Director: Unknown device orientation");
				break;
		  }
		  */
	}
}

// m_bPaused
bool CCDirector::isPaused(void)
{
	return m_bPaused;
}

// m_eProjection
ccDirectorProjection CCDirector::getProjection(void)
{
	return m_eProjection;
}

void CCDirector::setProjection(ccDirectorProjection kProjection)
{
	CGSize size = m_obSurfaceSize;
	switch (kProjection)
	{
	case kCCDirectorProjection2D:
		glMatrixMode(GL_PROJECTION);
		glLoadIdentity();
		glOrthof(0, size.width, 0, size.height, -1000, 1000);
		glMatrixMode(GL_MODELVIEW);
		glLoadIdentity();
		break;

	case kCCDirectorProjection3D:
		glViewport(0, 0, (GLsizei)size.width, (GLsizei)size.height);
		glMatrixMode(GL_PROJECTION);
		glLoadIdentity();
		gluPerspective(60, (GLfloat)size.width/size.height, 0.5f, 1500.0f);
			
		glMatrixMode(GL_MODELVIEW);	
		glLoadIdentity();
		gluLookAt( size.width/2, size.height/2, getZEye(),
				 size.width/2, size.height/2, 0,
				 0.0f, 1.0f, 0.0f);				
		break;
			
	case kCCDirectorProjectionCustom:
		// if custom, ignore it. The user is resposible for setting the correct projection
		break;
			
	default:
		CCLOG("cocos2d: Director: unrecognized projecgtion");
		break;
	}

	m_eProjection = kProjection;
}

ccDeviceOrientation CCDirector::getDeviceOrientation(void)
{
	return m_eDeviceOrientation;
}

// m_bSendCleanupToScene
bool CCDirector::isSendCleanupToScene(void)
{
	return m_bSendCleanupToScene;
}

// m_fContentScaleFactor
CGFloat CCDirector::getContentScaleFactor(void)
{
	return m_fContentScaleFactor;
}

void CCDirector::setContentScaleFactor(CGFloat obCGFloatValue)
{
	m_fContentScaleFactor = obCGFloatValue;
}

void CCDirector::setDepthBufferFormat(tDepthBufferFormat kDepthBufferFormat)
{
    assert(! isOpenGLAttached());
	m_eDepthBufferFormat = kDepthBufferFormat;
}

void CCDirector::purgeCachedData(void)
{
	CCBitmapFontAtlas::purgeCacheData();
	CCSpriteFrameCache::purgeSharedSpriteFrameCache();
	CCTextureCache::purgeSharedTextureCache();
}

float CCDirector::getZEye(void)
{
	return (m_obSurfaceSize.height / 1.1566f);
}

void CCDirector::setAlphaBlending(bool bOn)
{
	if (bOn)
	{
		glEnable(GL_BLEND);
		glBlendFunc(CC_BLEND_SRC, CC_BLEND_DST);
	}
	else
	{
		glDisable(GL_BLEND);
	}
}

void CCDirector::setDepthTest(bool bOn)
{
	if (bOn)
	{
		glClearDepthf(1.0f);
		glEnable(GL_DEPTH_TEST);
		glDepthFunc(GL_LEQUAL);
		glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
	}
	else
	{
		glDisable(GL_DEPTH_TEST);
	}
}

// is the view currently attached
bool CCDirector::isOpenGLAttached(void)
{
	return (m_pobOpenGLView->getSuperView() != NULL);
}

// detach or attach to a view or a window
bool CCDirector::detach(void)
{
	assert(isOpenGLAttached());

	// remove from the superview
	CCX_SAFE_DELETE(m_pobOpenGLView);

	assert(! isOpenGLAttached());

	return true;
}

/*
bool CCDirector::attachInWindow(UIWindow *pWindow)
{
	if (initOpenGLViewWithView(pWindow, pWindow->bounds())
	{
		return true;
	}

	return false;
}

bool CCDirector::attachInView(UIView *pView)
{
	if (initOpenGLViewWithView(pView, pView->bound())
	{
		return true;
	}

	return false;
}

bool CCDirector::attchInViewWithFrame(UIView *pView, CGRect frame)
{
	if (initOpenGLViewWithView(pView, frame))
	{
		return true;
	}

	return false;
}


bool CCDirector::initOpenGLViewWithViewWithFrame(UIView *pView, CGRect obRect)
{
	assert(! isOpenGLAttached());

	// check if the view is not initiallized
	if (! m_pobOpenGLView)
	{
		// define the pixel format
		string *pstrFormat = NULL;
		GLuint uDepthFormat = 0;

		if (m_ePixelFormat == kCCPixelFormatRGBA8888)
		{
			pstrFormat = kEAGLColorFormatRGBA8;
		} else
		if (m_ePixelFormat == kCCPixelFormatRGB565)
		{
			pstrFormat = kEAGLColorFormatRGB565;
		}
		else
		{
			CCLOG("cocos2d: Director: Unknown pixel format.");
		}
	}
}
*/

CGPoint CCDirector::convertToGL(CGPoint obPoint)
{
	CGSize s = m_obScreenSize;
	float newY = s.height - obPoint.y;
	float newX = s.width - obPoint.x;

	CGPoint ret;
	switch (m_eDeviceOrientation)
	{
	case CCDeviceOrientationPortrait:
		ret = ccp(obPoint.x, newY);
		break;
	case CCDeviceOrientationPortraitUpsideDown:
		ret = ccp(newX, obPoint.y);
		break;
	case CCDeviceOrientationLandscapeLeft:
		ret.x = obPoint.x;
		ret.y = obPoint.y;
		break;
	case CCDeviceOrientationLandscapeRight:
		ret.x = newY;
		ret.y = newX;
		break;
	}

	ret = ccpMult(ret, m_fContentScaleFactor);
	return ret;
}

CGPoint CCDirector::convertToUI(CGPoint obPoint)
{
	CGSize winSize = m_obSurfaceSize;
	float oppositeX = winSize.width - obPoint.x;
	float oppositeY = winSize.height - obPoint.y;
	CGPoint uiPoint;

	switch (m_eDeviceOrientation)
	{
	case CCDeviceOrientationPortrait:
		uiPoint = ccp(obPoint.x, obPoint.y);
		break;
	case CCDeviceOrientationPortraitUpsideDown:
		uiPoint = ccp(oppositeX, oppositeY);
		break;
	case CCDeviceOrientationLandscapeLeft:
		uiPoint = ccp(obPoint.y, oppositeX);
		break;
	case CCDeviceOrientationLandscapeRight:
		uiPoint = ccp(oppositeY, obPoint.x);
		break;
	}

	uiPoint = ccpMult(uiPoint, 1/m_fContentScaleFactor);
	return uiPoint;
}

CGSize CCDirector::getWinSize(void)
{
	CGSize s = m_obSurfaceSize;

	if (m_eDeviceOrientation == CCDeviceOrientationLandscapeLeft
		|| m_eDeviceOrientation == CCDeviceOrientationLandscapeRight)
	{
		// swap x,y in landspace mode
		CGSize tmp = s;
		s.width = tmp.height;
		s.height = tmp.width;
	}

	return s;
}

// return the current frame size
CGSize CCDirector::getDisplaySize(void)
{
	return m_obSurfaceSize;
}

void CCDirector::applyLandspace(void)
{
	CGSize s = m_obSurfaceSize;
	float w = s.width / 2;
	float h = s.height / 2;

	// XXX it's using hardcoded values.
	// What if the the screen size changes in the future?
	switch (m_eDeviceOrientation)
	{
	case CCDeviceOrientationPortrait:
		// nothing
		break;
	case CCDeviceOrientationPortraitUpsideDown:
		// upside down
		glTranslatef(w,h,0);
		glRotatef(180,0,0,1);
		glTranslatef(-w,-h,0);
		break;
	case CCDeviceOrientationLandscapeRight:
		glTranslatef(w,h,0);
		glRotatef(90,0,0,1);
		glTranslatef(-h,-w,0);
		break;
	case CCDeviceOrientationLandscapeLeft:
		glTranslatef(w,h,0);
		glRotatef(-90,0,0,1);
		glTranslatef(-h,-w,0);
		break;
	}
}

// scene management

void CCDirector::runWithScene(CCScene *pScene)
{
	assert(pScene != NULL);
	assert(m_pRunningScene == NULL);

	pushScene(pScene);
	startAnimation();

	// render the 1st frame to avoid flicker (issue #350)
	mainLoop();
}

void CCDirector::replaceScene(CCScene *pScene)
{
	assert(pScene != NULL);

	UINT32 index = m_pobScenesStack->count();

	m_bSendCleanupToScene = true;
	m_pobScenesStack->replaceObjectAtIndex(index - 1, pScene);

	m_pNextScene = pScene;
}

void CCDirector::pushScene(CCScene *pScene)
{
	assert(pScene);

	m_bSendCleanupToScene = false;

	m_pobScenesStack->addObject(pScene);
	m_pNextScene = pScene;
}

void CCDirector::popScene(void)
{
	assert(m_pRunningScene != NULL);

	m_pobScenesStack->removeLastObject();
	UINT32 c = m_pobScenesStack->count();

	if (c == 0)
	{
		end();
	}
	else
	{
		m_pNextScene = m_pobScenesStack->getObjectAtIndex(c - 1);
	}
}

void CCDirector::end(void)
{
	m_pRunningScene->onExit();
	m_pRunningScene->cleanup();
	m_pRunningScene->release();

	m_pRunningScene = NULL;
	m_pNextScene = NULL;

	// remove all objects, but don't release it.
	// runWithScene might be executed after 'end'.
	m_pobScenesStack->removeAllObjects();

	// don't release the event handlers
	// They are needed in case the director is run again
	CCTouchDispatcher::getSharedDispatcher()->removeAllDelegates();

	stopAnimation();

#if CC_DIRECTOR_FAST_FPS
	// todo
//	FPSLabel->release();
//	FPSLabel = NULL;
#endif

	// purge bitmap cache
	CCBitmapFontAtlas::purgeCachedData();

	// purge all managers
	CCSpriteFrameCache::purgeSharedSpriteFrameCache();
	CCScheduler::purgeSharedScheduler();
	CCActionManager::purgeSharedManager();
	CCTextureCache::purgeSharedTextureCache();

	// OpenGL view
	m_pobOpenGLView->release();
	m_pobOpenGLView = NULL;
}

void CCDirector::setNextScene(void)
{
	bool runningIsTransition = dynamic_cast<CCTransitonScene *>(m_pRunningScene) != NULL;
	bool newIsTransition = dynamic_cast<CCTransitionScene *>(m_pNextScene) != NULL;

	// If it is not a transition, call onExit/cleanup
	if (! newIsTransition)
	{
		m_pRunningScene->onExit();

		// issue #709. the root node (scene) should receive the cleanup message too
		// otherwise it might be leaked.
		if (m_bSendCleanupToScene)
		{
			m_pRunningScene->cleanup();
		}
	}

	m_pRunningScene->release();
	m_pRunningScene = m_pNextScene;
	m_pNextScene->retain();
	m_pNextScene = NULL;

	if (! runningIsTransition)
	{
		m_pRunningScene->onEnter();
		m_pRunningScene->onEnterTransitionDidFinish();
	}
}

void CCDirector::pause(void)
{
	if (m_bPaused)
	{
		return;
	}

	m_dOldAnimationInterval = m_dAnimationInterval;

	// when paused, don't consume CPU
	setAnimationInterval(1 / 4.0);
	m_bPaused = true;
}

void CCDirector::resume(void)
{
	if (! m_bPaused)
	{
		return;
	}

	setAnimationInterval(m_dOldAnimationInterval);

	if (gettimeofday(&m_sLastUpdate, NULL) != 0)
	{
		CCLOG("cocos2d: Director: Error in gettimeofday");
	}

	m_bPaused = false;
	m_fDeltaTime = 0;
}

void CCDirector::startAnimation(void)
{
	CCLOG("cocos2d: Director#startAnimation. Overrride me");
	assert(0);
}

void CCDirector::stopAnimation(void)
{
	CCLOG("cocos2d: Director#stopAnimation. Overrride me");
	assert(0);
}

void CCDirector::preMainLoop(void)
{
    CCLOG("cocos2d: Director#preMainLoop. Overrride me");
	assert(0);
}

// todo: implement later
#if CC_DIRECTOR_FAST_FPS
// display the FPS using a LabelAtlas
// updates the FPS every frame
void CCDirector::showFPS(void)
{
	++m_nFrames;
	m_fAccumDt += m_fDeltaTime;

	if (m_fAccumDt > CC_DIRECTOR_FPS_INTERVAL)
	{
		m_fFrameRate = m_nFrames / m_fAccumDt;
		m_nFrames = 0;
		m_fAccumDt = 0;
        
		/*
		NSString *str = [[NSString alloc] initWithFormat:@"%.1f", frameRate];
		[FPSLabel setString:str];
		[str release];
		*/
	}
}
#endif // CC_DIRECTOR_FAST_FPS

#if CC_ENABLE_PROFILERS
// implement later
#endif

// should we afford 4 types of director ??
// I think DisplayLinkDirector is enough
// so we now only support DisplayLinkDirector

// implementation of DisplayLinkDirector
void CCDisplayLinkDirector::startAnimation(void)
{
	if (gettimeofday(&m_sLastUpdate, NULL) != 0)
	{
		CCLOG("cocos2d: DisplayLinkDirector: Error on gettimeofday");
	}

	m_bInvalid = false;

	// approximate frame rate
	// assumes device refreshes at 60 fps
	//int frameInterval	= (int) floor(animationInterval * 60.0f);
	
	//CCLOG(@"cocos2d: Frame interval: %d", frameInterval);

	//displayLink = [NSClassFromString(@"CADisplayLink") displayLinkWithTarget:self selector:@selector(preMainLoop:)];
	//[displayLink setFrameInterval:frameInterval];
	//[displayLink addToRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
}

void CCDisplayLinkDirector::preMainLoop(void)
{
	if (! m_bInvalid)
	{
		mainLoop();
	}
}

void CCDisplayLinkDirector::stopAnimation(void)
{
	m_bInvalid = true;
}

void CCDisplayLinkDirector::setAnimationInterval(double dValue)
{
	m_dAnimationInterval = dValue;
	if (! m_bInvalid)
	{
		stopAnimation();
		startAnimation();
	}	
}