axmol/cocos2dx/tileMap_parallax_nodes/CCTMXTiledMap.cpp

/****************************************************************************
Copyright (c) 2010-2011 cocos2d-x.org
Copyright (c) 2009-2010 Ricardo Quesada
Copyright (c) 2011      Zynga Inc.

http://www.cocos2d-x.org

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#include "CCTMXTiledMap.h"
#include "CCTMXXMLParser.h"
#include "CCTMXLayer.h"
#include "CCSprite.h"
#include "CCPointExtension.h"

namespace cocos2d{

	// implementation CCTMXTiledMap
	CCTMXTiledMap * CCTMXTiledMap::tiledMapWithTMXFile(const char *tmxFile)
	{
		CCTMXTiledMap *pRet = new CCTMXTiledMap();
		if (pRet->initWithTMXFile(tmxFile))
		{
			pRet->autorelease();
			return pRet;
		}
        CC_SAFE_DELETE(pRet);
		return NULL;
	}
	bool CCTMXTiledMap::initWithTMXFile(const char *tmxFile)
	{
		CCAssert(tmxFile != NULL && strlen(tmxFile)>0, "TMXTiledMap: tmx file should not bi nil");
		
		setContentSize(CCSizeZero);

		CCTMXMapInfo *mapInfo = CCTMXMapInfo::formatWithTMXFile(tmxFile);
    
        if (! mapInfo)
        {
            return false;
        }
		CCAssert( mapInfo->getTilesets()->count() != 0, "TMXTiledMap: Map not found. Please check the filename.");

		m_tMapSize = mapInfo->getMapSize();
		m_tTileSize = mapInfo->getTileSize();
		m_nMapOrientation = mapInfo->getOrientation();
		setObjectGroups(mapInfo->getObjectGroups());
		setProperties(mapInfo->getProperties());
		CC_SAFE_RELEASE(m_pTileProperties);
		m_pTileProperties = mapInfo->getTileProperties();
		CC_SAFE_RETAIN(m_pTileProperties);

		int idx = 0;

		CCMutableArray<CCTMXLayerInfo*>* layers = mapInfo->getLayers();
		if (layers && layers->count()>0)
		{
            if (NULL == m_pTMXLayers)
            {
                m_pTMXLayers = new CCDictionary<std::string, CCTMXLayer*>();
                CCAssert(m_pTMXLayers, "Allocate memory failed!");
            }

			CCTMXLayerInfo *layerInfo = NULL;
			CCMutableArray<CCTMXLayerInfo*>::CCMutableArrayIterator it;
			for (it = layers->begin(); it != layers->end(); ++it)
			{
				layerInfo = *it;
				if (layerInfo && layerInfo->m_bVisible)
				{
					CCTMXLayer *child = parseLayer(layerInfo, mapInfo);
					addChild((CCNode*)child, idx, idx);

                    // record the CCTMXLayer object by it's name
                    std::string layerName = child->getLayerName();
                    m_pTMXLayers->setObject(child, layerName);

					// update content size with the max size
					const CCSize& childSize = child->getContentSize();
					CCSize currentSize = this->getContentSize();
					currentSize.width = MAX( currentSize.width, childSize.width );
					currentSize.height = MAX( currentSize.height, childSize.height );
					this->setContentSize(currentSize);

					idx++;
				}
			}
		}
		return true;
	}
	CCTMXTiledMap::CCTMXTiledMap()
        :m_tMapSize(CCSizeZero)
		,m_tTileSize(CCSizeZero)		
		,m_pObjectGroups(NULL)
		,m_pProperties(NULL)
		,m_pTileProperties(NULL)
        ,m_pTMXLayers(NULL)
	{
	}
	CCTMXTiledMap::~CCTMXTiledMap()
	{
		CC_SAFE_RELEASE(m_pProperties);
		CC_SAFE_RELEASE(m_pObjectGroups);
		CC_SAFE_RELEASE(m_pTileProperties);
        CC_SAFE_RELEASE(m_pTMXLayers);
	}
	CCMutableArray<CCTMXObjectGroup*> * CCTMXTiledMap::getObjectGroups()
	{
		return m_pObjectGroups;
	}
	void CCTMXTiledMap::setObjectGroups(CCMutableArray<CCTMXObjectGroup*>* var)
	{
		CC_SAFE_RETAIN(var);
		CC_SAFE_RELEASE(m_pObjectGroups);
		m_pObjectGroups = var;
	}
	CCStringToStringDictionary * CCTMXTiledMap::getProperties()
	{
		return m_pProperties;
	}
	void CCTMXTiledMap::setProperties(CCStringToStringDictionary* var)
	{
		CC_SAFE_RETAIN(var);
		CC_SAFE_RELEASE(m_pProperties);
		m_pProperties = var;
	}
	// private
	CCTMXLayer * CCTMXTiledMap::parseLayer(CCTMXLayerInfo *layerInfo, CCTMXMapInfo *mapInfo)
	{
		CCTMXTilesetInfo *tileset = tilesetForLayer(layerInfo, mapInfo);
		CCTMXLayer *layer = CCTMXLayer::layerWithTilesetInfo(tileset, layerInfo, mapInfo);

		// tell the layerinfo to release the ownership of the tiles map.
		layerInfo->m_bOwnTiles = false;
		layer->setupTiles();

		return layer;
	}
	
	CCTMXTilesetInfo * CCTMXTiledMap::tilesetForLayer(CCTMXLayerInfo *layerInfo, CCTMXMapInfo *mapInfo)
	{
		CCSize size = layerInfo->m_tLayerSize;
		CCMutableArray<CCTMXTilesetInfo*>* tilesets = mapInfo->getTilesets();
		if (tilesets && tilesets->count()>0)
		{
			CCTMXTilesetInfo *tileset = NULL;
			CCMutableArray<CCTMXTilesetInfo*>::CCMutableArrayRevIterator rit;
			for (rit = tilesets->rbegin(); rit != tilesets->rend(); ++rit)
			{
				tileset = *rit;
				if (tileset)
				{
					for( unsigned int y=0; y < size.height; y++ )
					{
						for( unsigned int x=0; x < size.width; x++ ) 
						{
							unsigned int pos = (unsigned int)(x + size.width * y);
							unsigned int gid = layerInfo->m_pTiles[ pos ];

							// gid are stored in little endian.
							// if host is big endian, then swap
							//if( o == CFByteOrderBigEndian )
							//	gid = CFSwapInt32( gid );
							/* We support little endian.*/

							// XXX: gid == 0 --> empty tile
							if( gid != 0 ) 
							{
								// Optimization: quick return
								// if the layer is invalid (more than 1 tileset per layer) an assert will be thrown later
								if( gid >= tileset->m_uFirstGid )
									return tileset;
							}
						}
					}		
				}
			}
		}

		// If all the tiles are 0, return empty tileset
		CCLOG("cocos2d: Warning: TMX Layer '%@' has no tiles", layerInfo->m_sName.c_str());
		return NULL;
	}


	// public
	CCTMXLayer * CCTMXTiledMap::layerNamed(const char *layerName)
	{
		std::string sLayerName = layerName;
        CCTMXLayer * pRet = m_pTMXLayers->objectForKey(sLayerName);
		return pRet;
	}
	CCTMXObjectGroup * CCTMXTiledMap::objectGroupNamed(const char *groupName)
	{
		std::string sGroupName = groupName;
		if (m_pObjectGroups && m_pObjectGroups->count()>0)
		{
			CCTMXObjectGroup *objectGroup;
			CCMutableArray<CCTMXObjectGroup*>::CCMutableArrayIterator it;
			for (it = m_pObjectGroups->begin(); it != m_pObjectGroups->end(); ++it)
			{
				objectGroup = (CCTMXObjectGroup*)(*it);
				if (objectGroup && objectGroup->getGroupName() == sGroupName)
				{
					return objectGroup;
				}
			}
		}

		// objectGroup not found
		return NULL;
	}

	CCString * CCTMXTiledMap::propertyNamed(const char *propertyName)
	{
		return m_pProperties->objectForKey(std::string(propertyName));
	}
	CCDictionary<std::string, CCString*> * CCTMXTiledMap::propertiesForGID(int GID)
	{
		return m_pTileProperties->objectForKey(GID);
	}
		

}// namespace cocos2d