TiledMap+TexturePacker,解决cocos2dx下tiled地图1坑



 tiled 做小地图没什么问题，但是要做大型地图应用到cocos2dx中，各种坑，其实我们只需要简单修改cocos2dx解析代码

1 在编辑器里可以自由添加多个图块， 解析只能弹出断言 只能一个纹理，

==》怎么办，只需要TexturePacker整合成一个纹理集。在解析代码中添加这种支持即可，非常方便

以下代码 都是我从代码提取出来的 会有点乱，

TMXTiledMap.h 添加

TMXLayer * parseLayer(Texture2D *texture, TMXLayerInfo *layerInfo, TMXMapInfo *mapInfo);//_wb_20140325

 std::string _tmxFileName;//_wb_20140325

TMXTiledMap.cpp 修改

在

bool TMXTiledMap::initWithTMXFile(const std::string& tmxFile)

{

添加

_tmxFileName = tmxFile;//_wb_20140325  

}

在void TMXTiledMap::buildWithMapInfo(TMXMapInfo* mapInfo)中添加修改

void TMXTiledMap::buildWithMapInfo(TMXMapInfo* mapInfo)

{

    _mapSize = mapInfo->getMapSize();

    _tileSize = mapInfo->getTileSize();

    _mapOrientation = mapInfo->getOrientation();

    _objectGroups = mapInfo->getObjectGroups();

    _properties = mapInfo->getProperties();

    _tileProperties = mapInfo->getTileProperties();

 //_wb_20140325

 std::string plistfile = _tmxFileName.substr(0, _tmxFileName.find_last_of('.') + 1) + "plist";

 SpriteFrameCache::getInstance()->addSpriteFramesWithFile(plistfile.c_str());

 std::string pngfile = _tmxFileName.substr(0, _tmxFileName.find_last_of('.') + 1) + "png";

 Texture2D *texture = TextureCache::getInstance()->getTextureForKey(pngfile.c_str());

    int idx=0;

    auto& layers = _layersInfo;

    for(const auto &layerInfo : layers) {

        if (layerInfo->_visible)

        {

            TMXLayer *child = parseLayer(texture,layerInfo, mapInfo);

            addChild(child, idx, idx);

           

            // update content size with the max size

            const Size& childSize = child->getContentSize();

            Size currentSize = this->getContentSize();

            currentSize.width = std::max( currentSize.width, childSize.width );

            currentSize.height = std::max( currentSize.height, childSize.height );

            this->setContentSize(currentSize);

           

            idx++;

        }

    }

}

TMXLayer * TMXTiledMap::parseLayer( Texture2D *texture,TMXLayerInfo *layerInfo, TMXMapInfo *mapInfo)

{

    TMXLayer *layer = TMXLayer::create(texture, layerInfo, mapInfo);

    // tell the layerinfo to release the ownership of the tiles map.

    layerInfo->_ownTiles = false;

    layer->setupTiles();

    return layer;

}

TMXLayer.h

添加

 TMXMapInfo * _mapInfo;//_wb_20140325

 static TMXLayer * create( Texture2D *texture, TMXLayerInfo *layerInfo, TMXMapInfo *mapInfo);//_wb_20140325

 bool initWithTilesetInfo(Texture2D *texture,  TMXLayerInfo *layerInfo, TMXMapInfo *mapInfo);//_wb_20140325

/_wb_20140325

TMXLayer * TMXLayer::create( Texture2D *texture, TMXLayerInfo *layerInfo, TMXMapInfo *mapInfo)

{

 TMXLayer *pRet = new TMXLayer();

 if (pRet->initWithTilesetInfo(texture,layerInfo, mapInfo))

 {

  pRet->autorelease();

  return pRet;

 }

 return NULL;

}

//_wb_20140325

bool TMXLayer::initWithTilesetInfo(Texture2D *texture,  TMXLayerInfo *layerInfo, TMXMapInfo *mapInfo)

{

 // XXX: is 35% a good estimate ?

 Size size = layerInfo->_layerSize;

 float totalNumberOfTiles = size.width * size.height;

 float capacity = totalNumberOfTiles * 0.35f + 1; // 35 percent is oupied ?

 

 if (SpriteBatchNode::initWithTexture(texture, (unsigned int)capacity))

 {

  // layerInfo

  _layerName = layerInfo->_name;

  _layerSize = size;

  _tiles = layerInfo->_tiles;

  _opacity = layerInfo->_opacity;

  setProperties(layerInfo->getProperties());

  _contentScaleFactor = Director::getInstance()->getContentScaleFactor();

  _mapInfo = mapInfo;//_wb_20140325

  CC_SAFE_RETAIN(_mapInfo);

  // mapInfo

  _mapTileSize = mapInfo->getTileSize();

  _layerOrientation = mapInfo->getOrientation();

  // offset (after layer orientation is set);

  Point offset = this->calculateLayerOffset(layerInfo->_offset);

  this->setPosition(CC_POINT_PIXELS_TO_POINTS(offset));

  _atlasIndexArray = ccCArrayNew(totalNumberOfTiles);

  this->setContentSize(CC_SIZE_PIXELS_TO_POINTS(Size(_layerSize.width * _mapTileSize.width, _layerSize.height * _mapTileSize.height)));

  _useAutomaticVertexZ = false;

  _vertexZvalue = 0;

 

  return true;

  

 }

 return false;

}

// TMXLayer - setup Tiles

void TMXLayer::setupTiles()

{   

  _textureAtlas->getTexture()->setAliasTexParameters();

    // Parse cocos2d properties

    this->parseInternalProperties();

    for (int y=0; y < _layerSize.height; y++)

    {

        for (int x=0; x < _layerSize.width; x++)

        {

            int pos = static_cast<int>(x + _layerSize.width * y);

            int gid = _tiles[ pos ];

            // XXX: gid == 0 --> empty tile

            if (gid != 0)

            {

                this->appendTileForGID(gid, Point(x, y));

            }

        }

    }

}

// since lot's of assumptions are no longer true

Sprite * TMXLayer::appendTileForGID(uint32_t gid, const Point& pos)

{

 

 TMXTilesetInfo* tileSet = _mapInfo->tilesetForGid(static_cast<int>(gid & kTMXFlippedMask));//_wb_20140325

 if (tileSet /*&& gid != 0 && (static_cast<int>((gid & kTMXFlippedMask)) - tileSet->_firstGid) >= 0*/)

    {

// _wb_20140325  Rect rect = tileSet->getRectForGID(gid);

//   _wb_20140325      rect = CC_RECT_PIXELS_TO_POINTS(rect);

       

        intptr_t z = (intptr_t)(pos.x + pos.y * _layerSize.width);

       

      //_wb_20140325  Sprite *tile =  reusedTileWithRect(rect);

        Sprite * tile = Sprite::createWithSpriteFrameName(tileSet->_sourceImage.c_str());  //_wb_

        setupTileSprite(tile ,pos ,gid);

       

        // optimization:

        // The difference between appendTileForGID and insertTileforGID is that append is faster, since

        // it appends the tile at the end of the texture atlas

        ssize_t indexForZ = _atlasIndexArray->num;

       

        // don't add it using the "standard" way.

        insertQuadFromSprite(tile, indexForZ);

       

        // append should be after addQuadFromSprite since it modifies the quantity values

        ccCArrayInsertValueAtIndex(_atlasIndexArray, (void*)z, indexForZ);

       

        return tile;

    }

  
85c5
 

    return nullptr;

}

TMXTilesetInfo修改

TMXTilesetInfo *   TMXMapInfo::tilesetForGid(int _gid)//_wb_20140325

{//_wb_20140325

 if (!_tilesets.empty())

 {

  for (auto iter = _tilesets.crbegin(); iter != _tilesets.crend(); ++iter)

  {

   TMXTilesetInfo* tileset = dynamic_cast<TMXTilesetInfo*>(*iter);

   if (tileset->_firstGid  == _gid)

   {

    return tileset;   

   }

  }

 }

 return nullptr;

}