axmol/cocos2dx/tilemap_parallax_nodes/CCTMXTiledMap.cpp

/****************************************************************************
Copyright (c) 2010-2012 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 "sprite_nodes/CCSprite.h"
#include "support/CCPointExtension.h"

NS_CC_BEGIN

// implementation CCTMXTiledMap

CCTMXTiledMap * CCTMXTiledMap::create(const char *tmxFile)
{
    CCTMXTiledMap *pRet = new CCTMXTiledMap();
    if (pRet->initWithTMXFile(tmxFile))
    {
        pRet->autorelease();
        return pRet;
    }
    CC_SAFE_DELETE(pRet);
    return NULL;
}

CCTMXTiledMap* CCTMXTiledMap::createWithXML(const char* tmxString, const char* resourcePath)
{
    CCTMXTiledMap *pRet = new CCTMXTiledMap();
    if (pRet->initWithXML(tmxString, resourcePath))
    {
        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 NULL");
    
    setContentSize(CCSizeZero);

    CCTMXMapInfo *mapInfo = CCTMXMapInfo::formatWithTMXFile(tmxFile);

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

    return true;
}

bool CCTMXTiledMap::initWithXML(const char* tmxString, const char* resourcePath)
{
    setContentSize(CCSizeZero);

    CCTMXMapInfo *mapInfo = CCTMXMapInfo::formatWithXML(tmxString, resourcePath);

    CCAssert( mapInfo->getTilesets()->count() != 0, "TMXTiledMap: Map not found. Please check the filename.");
    buildWithMapInfo(mapInfo);

    return true;
}

CCTMXTiledMap::CCTMXTiledMap()
    :m_tMapSize(CCSizeZero)
    ,m_tTileSize(CCSizeZero)        
    ,m_pObjectGroups(NULL)
    ,m_pProperties(NULL)
    ,m_pTileProperties(NULL)
{
}
CCTMXTiledMap::~CCTMXTiledMap()
{
    CC_SAFE_RELEASE(m_pProperties);
    CC_SAFE_RELEASE(m_pObjectGroups);
    CC_SAFE_RELEASE(m_pTileProperties);
}

CCArray* CCTMXTiledMap::getObjectGroups()
{
    return m_pObjectGroups;
}

void CCTMXTiledMap::setObjectGroups(CCArray* var)
{
    CC_SAFE_RETAIN(var);
    CC_SAFE_RELEASE(m_pObjectGroups);
    m_pObjectGroups = var;
}

CCDictionary * CCTMXTiledMap::getProperties()
{
    return m_pProperties;
}

void CCTMXTiledMap::setProperties(CCDictionary* 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::create(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;
    CCArray* tilesets = mapInfo->getTilesets();
    if (tilesets && tilesets->count()>0)
    {
        CCTMXTilesetInfo* tileset = NULL;
        CCObject* pObj = NULL;
        CCARRAY_FOREACH_REVERSE(tilesets, pObj)
        {
            tileset = (CCTMXTilesetInfo*)pObj;
            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 CCAssert will be thrown later
                            if( (gid & kCCFlippedMask) >= tileset->m_uFirstGid )
                                return tileset;
                        }
                    }
                }        
            }
        }
    }

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

void CCTMXTiledMap::buildWithMapInfo(CCTMXMapInfo* mapInfo)
{
    m_tMapSize = mapInfo->getMapSize();
    m_tTileSize = mapInfo->getTileSize();
    m_nMapOrientation = mapInfo->getOrientation();

    CC_SAFE_RELEASE(m_pObjectGroups);
    m_pObjectGroups = mapInfo->getObjectGroups();
    CC_SAFE_RETAIN(m_pObjectGroups);

    CC_SAFE_RELEASE(m_pProperties);
    m_pProperties = mapInfo->getProperties();
    CC_SAFE_RETAIN(m_pProperties);

    CC_SAFE_RELEASE(m_pTileProperties);
    m_pTileProperties = mapInfo->getTileProperties();
    CC_SAFE_RETAIN(m_pTileProperties);

    int idx=0;

    CCArray* layers = mapInfo->getLayers();
    if (layers && layers->count()>0)
    {
        CCTMXLayerInfo* layerInfo = NULL;
        CCObject* pObj = NULL;
        CCARRAY_FOREACH(layers, pObj)
        {
            layerInfo = (CCTMXLayerInfo*)pObj;
            if (layerInfo && layerInfo->m_bVisible)
            {
                CCTMXLayer *child = parseLayer(layerInfo, mapInfo);
                addChild((CCNode*)child, idx, idx);

                // 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++;
            }
        }
    }
}

// public
CCTMXLayer * CCTMXTiledMap::layerNamed(const char *layerName)
{
    CCAssert(layerName != NULL && strlen(layerName) > 0, "Invalid layer name!");
    CCObject* pObj = NULL;
    CCARRAY_FOREACH(m_pChildren, pObj) 
    {
        CCTMXLayer* layer = dynamic_cast<CCTMXLayer*>(pObj);
        if(layer)
        {
            if(0 == strcmp(layer->getLayerName(), layerName))
            {
                return layer;
            }
        }
    }

    // layer not found
    return NULL;
}

CCTMXObjectGroup * CCTMXTiledMap::objectGroupNamed(const char *groupName)
{
    CCAssert(groupName != NULL && strlen(groupName) > 0, "Invalid group name!");

    std::string sGroupName = groupName;
    if (m_pObjectGroups && m_pObjectGroups->count()>0)
    {
        CCTMXObjectGroup* objectGroup = NULL;
        CCObject* pObj = NULL;
        CCARRAY_FOREACH(m_pObjectGroups, pObj)
        {
            objectGroup = (CCTMXObjectGroup*)(pObj);
            if (objectGroup && objectGroup->getGroupName() == sGroupName)
            {
                return objectGroup;
            }
        }
    }

    // objectGroup not found
    return NULL;
}

CCString* CCTMXTiledMap::propertyNamed(const char *propertyName)
{
    return (CCString*)m_pProperties->objectForKey(propertyName);
}

CCDictionary* CCTMXTiledMap::propertiesForGID(int GID)
{
    return (CCDictionary*)m_pTileProperties->objectForKey(GID);
}
        

NS_CC_END