TiledMap+TexturePacker,解决cocos2dx下tiled地图1坑

Posted 2020-09-20 ljbguanli

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 tiled 做小地图没什么问题。可是要做大型地图应用到cocos2dx中。各种坑。事实上我们仅仅须要简单改动cocos2dx解析代码

1 在编辑器里能够自由加入多个图块， 解析仅仅能弹出断言 仅仅能一个纹理。

==》怎么办，仅仅须要TexturePacker整合成一个纹理集。在解析代码中加入这样的支持就可以，很方便

下面代码 都是我从代码提取出来的 会有点乱。

TMXTiledMap.h 加入

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

 std::string _tmxFileName;//_wb_20140325

TMXTiledMap.cpp 改动

在

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

{

加入

_tmxFileName = tmxFile;//_wb_20140325  

}

在void TMXTiledMap::buildWithMapInfo(TMXMapInfo* mapInfo)中加入改动

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

加入

 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;
    }
   
    return nullptr;
}

TMXTilesetInfo改动

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;
}

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