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