// the XML parser calls here with all the elements
void TMXMapInfo::startElement(void *ctx, const char *name, const char **atts)
{    
    CC_UNUSED_PARAM(ctx);
    TMXMapInfo *tmxMapInfo = this;
    std::string elementName = name;
    ValueMap attributeDict;
    if (atts && atts[0])
    {
        for (int i = 0; atts[i]; i += 2)
        {
            std::string key = atts[i];
            std::string value = atts[i+1];
            attributeDict.insert(std::make_pair(key, Value(value)));
        }
    }
    if (elementName == "map")
    {
        std::string version = attributeDict["version"].asString();
        if ( version != "1.0")
        {
            CCLOG("cocos2d: TMXFormat: Unsupported TMX version: %s", version.c_str());
        }
        std::string orientationStr = attributeDict["orientation"].asString();
        if (orientationStr == "orthogonal") {
            tmxMapInfo->setOrientation(TMXOrientationOrtho);
        }
        else if (orientationStr  == "isometric") {
            tmxMapInfo->setOrientation(TMXOrientationIso);
        }
        else if (orientationStr == "hexagonal") {
            tmxMapInfo->setOrientation(TMXOrientationHex);
        }
        else if (orientationStr == "staggered") {
            tmxMapInfo->setOrientation(TMXOrientationStaggered);
        }
        else {
            CCLOG("cocos2d: TMXFomat: Unsupported orientation: %d", tmxMapInfo->getOrientation());
        }

        Size s;
        s.width = attributeDict["width"].asFloat();
        s.height = attributeDict["height"].asFloat();
        tmxMapInfo->setMapSize(s);

        s.width = attributeDict["tilewidth"].asFloat();
        s.height = attributeDict["tileheight"].asFloat();
        tmxMapInfo->setTileSize(s);

        // The parent element is now "map"
        tmxMapInfo->setParentElement(TMXPropertyMap);
    } 
    else if (elementName == "tileset") 
    {
        // If this is an external tileset then start parsing that
        std::string externalTilesetFilename = attributeDict["source"].asString();
        if (externalTilesetFilename != "")
        {
            _externalTilesetFilename = externalTilesetFilename;

            // Tileset file will be relative to the map file. So we need to convert it to an absolute path
            if (_TMXFileName.find_last_of("/") != string::npos)
            {
                string dir = _TMXFileName.substr(0, _TMXFileName.find_last_of("/") + 1);
                externalTilesetFilename = dir + externalTilesetFilename;
            }
            else 
            {
                externalTilesetFilename = _resources + "/" + externalTilesetFilename;
            }
            externalTilesetFilename = FileUtils::getInstance()->fullPathForFilename(externalTilesetFilename);
            
            _currentFirstGID = attributeDict["firstgid"].asInt();
            if (_currentFirstGID < 0)
            {
                _currentFirstGID = 0;
            }
            _recordFirstGID = false;
            
            tmxMapInfo->parseXMLFile(externalTilesetFilename);
        }
        else
        {
            TMXTilesetInfo *tileset = new (std::nothrow) TMXTilesetInfo();
            tileset->_name = attributeDict["name"].asString();
            
            if (_recordFirstGID)
            {
                // unset before, so this is tmx file.
                tileset->_firstGid = attributeDict["firstgid"].asInt();
                
                if (tileset->_firstGid < 0)
                {
                    tileset->_firstGid = 0;
                }
            }
            else
            {
                tileset->_firstGid = _currentFirstGID;
                _currentFirstGID = 0;
            }
            
            tileset->_spacing = attributeDict["spacing"].asInt();
            tileset->_margin = attributeDict["margin"].asInt();
            Size s;
            s.width = attributeDict["tilewidth"].asFloat();
            s.height = attributeDict["tileheight"].asFloat();
            tileset->_tileSize = s;

            tmxMapInfo->getTilesets().pushBack(tileset);
            tileset->release();
        }
    }
    else if (elementName == "tile")
    {
        if (tmxMapInfo->getParentElement() == TMXPropertyLayer)
        {
            TMXLayerInfo* layer = tmxMapInfo->getLayers().back();
            Size layerSize = layer->_layerSize;
            uint32_t gid = static_cast<uint32_t>(attributeDict["gid"].asInt());
            int tilesAmount = layerSize.width*layerSize.height;
            
            if (_xmlTileIndex < tilesAmount)
            {
                layer->_tiles[_xmlTileIndex++] = gid;
            }
        }
        else
        {
            TMXTilesetInfo* info = tmxMapInfo->getTilesets().back();
            tmxMapInfo->setParentGID(info->_firstGid + attributeDict["id"].asInt());
            tmxMapInfo->getTileProperties()[tmxMapInfo->getParentGID()] = Value(ValueMap());
            tmxMapInfo->setParentElement(TMXPropertyTile);
        }
    }
    else if (elementName == "layer")
    {
        TMXLayerInfo *layer = new (std::nothrow) TMXLayerInfo();
        layer->_name = attributeDict["name"].asString();

        Size s;
        s.width = attributeDict["width"].asFloat();
        s.height = attributeDict["height"].asFloat();
        layer->_layerSize = s;

        Value& visibleValue = attributeDict["visible"];
        layer->_visible = visibleValue.isNull() ? true : visibleValue.asBool();

        Value& opacityValue = attributeDict["opacity"];
        layer->_opacity = opacityValue.isNull() ? 255 : (unsigned char)(255.0f * opacityValue.asFloat());

        float x = attributeDict["x"].asFloat();
        float y = attributeDict["y"].asFloat();
        layer->_offset.set(x, y);

        tmxMapInfo->getLayers().pushBack(layer);
        layer->release();

        // The parent element is now "layer"
        tmxMapInfo->setParentElement(TMXPropertyLayer);
    } 
    else if (elementName == "objectgroup")
    {
        TMXObjectGroup *objectGroup = new (std::nothrow) TMXObjectGroup();
        objectGroup->setGroupName(attributeDict["name"].asString());
        Vec2 positionOffset;
        positionOffset.x = attributeDict["x"].asFloat() * tmxMapInfo->getTileSize().width;
        positionOffset.y = attributeDict["y"].asFloat() * tmxMapInfo->getTileSize().height;
        objectGroup->setPositionOffset(positionOffset);

        tmxMapInfo->getObjectGroups().pushBack(objectGroup);
        objectGroup->release();

        // The parent element is now "objectgroup"
        tmxMapInfo->setParentElement(TMXPropertyObjectGroup);
    }
    else if (elementName == "image")
    {
        TMXTilesetInfo* tileset = tmxMapInfo->getTilesets().back();

        // build full path
        std::string imagename = attributeDict["source"].asString();
        tileset->_originSourceImage = imagename;

        if (_TMXFileName.find_last_of("/") != string::npos)
        {
            string dir = _TMXFileName.substr(0, _TMXFileName.find_last_of("/") + 1);
            tileset->_sourceImage = dir + imagename;
        }
        else 
        {
            tileset->_sourceImage = _resources + (_resources.size() ? "/" : "") + imagename;
        }
    } 
    else if (elementName == "data")
    {
        std::string encoding = attributeDict["encoding"].asString();
        std::string compression = attributeDict["compression"].asString();

        if (encoding == "")
        {
            tmxMapInfo->setLayerAttribs(tmxMapInfo->getLayerAttribs() | TMXLayerAttribNone);
            
            TMXLayerInfo* layer = tmxMapInfo->getLayers().back();
            Size layerSize = layer->_layerSize;
            int tilesAmount = layerSize.width*layerSize.height;

            uint32_t *tiles = (uint32_t*) malloc(tilesAmount*sizeof(uint32_t));
            // set all value to 0
            memset(tiles, 0, tilesAmount*sizeof(int));

            layer->_tiles = tiles;
        }
        else if (encoding == "base64")
        {
            int layerAttribs = tmxMapInfo->getLayerAttribs();
            tmxMapInfo->setLayerAttribs(layerAttribs | TMXLayerAttribBase64);
            tmxMapInfo->setStoringCharacters(true);

            if (compression == "gzip")
            {
                layerAttribs = tmxMapInfo->getLayerAttribs();
                tmxMapInfo->setLayerAttribs(layerAttribs | TMXLayerAttribGzip);
            } else
            if (compression == "zlib")
            {
                layerAttribs = tmxMapInfo->getLayerAttribs();
                tmxMapInfo->setLayerAttribs(layerAttribs | TMXLayerAttribZlib);
            }
            CCASSERT( compression == "" || compression == "gzip" || compression == "zlib", "TMX: unsupported compression method" );
        }
    } 
    else if (elementName == "object")
    {
        TMXObjectGroup* objectGroup = tmxMapInfo->getObjectGroups().back();

        // The value for "type" was blank or not a valid class name
        // Create an instance of TMXObjectInfo to store the object and its properties
        ValueMap dict;
        // Parse everything automatically
        const char* keys[] = {"name", "type", "width", "height", "gid"};
        
        for (const auto& key : keys)
        {
            Value value = attributeDict[key];
            dict[key] = value;
        }

        // But X and Y since they need special treatment
        // X
        int x = attributeDict["x"].asInt();
        // Y
        int y = attributeDict["y"].asInt();
        
        Vec2 p(x + objectGroup->getPositionOffset().x, _mapSize.height * _tileSize.height - y  - objectGroup->getPositionOffset().y - attributeDict["height"].asInt());
        p = CC_POINT_PIXELS_TO_POINTS(p);
        dict["x"] = Value(p.x);
        dict["y"] = Value(p.y);
        
        int width = attributeDict["width"].asInt();
        int height = attributeDict["height"].asInt();
        Size s(width, height);
        s = CC_SIZE_PIXELS_TO_POINTS(s);
        dict["width"] = Value(s.width);
        dict["height"] = Value(s.height);

        // Add the object to the objectGroup
        objectGroup->getObjects().push_back(Value(dict));

        // The parent element is now "object"
        tmxMapInfo->setParentElement(TMXPropertyObject);
    } 
    else if (elementName == "property")
    {
        if ( tmxMapInfo->getParentElement() == TMXPropertyNone ) 
        {
            CCLOG( "TMX tile map: Parent element is unsupported. Cannot add property named '%s' with value '%s'",
                  attributeDict["name"].asString().c_str(), attributeDict["value"].asString().c_str() );
        } 
        else if ( tmxMapInfo->getParentElement() == TMXPropertyMap )
        {
            // The parent element is the map
            Value value = attributeDict["value"];
            std::string key = attributeDict["name"].asString();
            tmxMapInfo->getProperties().insert(std::make_pair(key, value));
        }
        else if ( tmxMapInfo->getParentElement() == TMXPropertyLayer )
        {
            // The parent element is the last layer
            TMXLayerInfo* layer = tmxMapInfo->getLayers().back();
            Value value = attributeDict["value"];
            std::string key = attributeDict["name"].asString();
            // Add the property to the layer
            layer->getProperties().insert(std::make_pair(key, value));
        }
        else if ( tmxMapInfo->getParentElement() == TMXPropertyObjectGroup ) 
        {
            // The parent element is the last object group
            TMXObjectGroup* objectGroup = tmxMapInfo->getObjectGroups().back();
            Value value = attributeDict["value"];
            std::string key = attributeDict["name"].asString();
            objectGroup->getProperties().insert(std::make_pair(key, value));
        }
        else if ( tmxMapInfo->getParentElement() == TMXPropertyObject )
        {
            // The parent element is the last object
            TMXObjectGroup* objectGroup = tmxMapInfo->getObjectGroups().back();
            ValueMap& dict = objectGroup->getObjects().rbegin()->asValueMap();

            std::string propertyName = attributeDict["name"].asString();
            dict[propertyName] = attributeDict["value"];
        }
        else if ( tmxMapInfo->getParentElement() == TMXPropertyTile ) 
        {
            ValueMap& dict = tmxMapInfo->getTileProperties().at(tmxMapInfo->getParentGID()).asValueMap();

            std::string propertyName = attributeDict["name"].asString();
            dict[propertyName] = attributeDict["value"];
        }
    }
    else if (elementName == "polygon") 
    {
        // find parent object's dict and add polygon-points to it
        TMXObjectGroup* objectGroup = _objectGroups.back();
        ValueMap& dict = objectGroup->getObjects().rbegin()->asValueMap();

        // get points value string
        std::string value = attributeDict["points"].asString();
        if (!value.empty())
        {
            ValueVector pointsArray;
            pointsArray.reserve(10);

            // parse points string into a space-separated set of points
            stringstream pointsStream(value);
            string pointPair;
            while (std::getline(pointsStream, pointPair, ' '))
            {
                // parse each point combo into a comma-separated x,y point
                stringstream pointStream(pointPair);
                string xStr, yStr;
                
                ValueMap pointDict;

                // set x
                if (std::getline(pointStream, xStr, ','))
                {
                    int x = atoi(xStr.c_str()) + (int)objectGroup->getPositionOffset().x;
                    pointDict["x"] = Value(x);
                }

                // set y
                if (std::getline(pointStream, yStr, ','))
                {
                    int y = atoi(yStr.c_str()) + (int)objectGroup->getPositionOffset().y;
                    pointDict["y"] = Value(y);
                }
                
                // add to points array
                pointsArray.push_back(Value(pointDict));
            }
            
            dict["points"] = Value(pointsArray);
        }
    } 
    else if (elementName == "polyline")
    {
        // find parent object's dict and add polyline-points to it
        TMXObjectGroup* objectGroup = _objectGroups.back();
        ValueMap& dict = objectGroup->getObjects().rbegin()->asValueMap();
        
        // get points value string
        std::string value = attributeDict["points"].asString();
        if (!value.empty())
        {
            ValueVector pointsArray;
            pointsArray.reserve(10);
            
            // parse points string into a space-separated set of points
            stringstream pointsStream(value);
            string pointPair;
            while (std::getline(pointsStream, pointPair, ' '))
            {
                // parse each point combo into a comma-separated x,y point
                stringstream pointStream(pointPair);
                string xStr, yStr;
                
                ValueMap pointDict;
                
                // set x
                if (std::getline(pointStream, xStr, ','))
                {
                    int x = atoi(xStr.c_str()) + (int)objectGroup->getPositionOffset().x;
                    pointDict["x"] = Value(x);
                }
                
                // set y
                if (std::getline(pointStream, yStr, ','))
                {
                    int y = atoi(yStr.c_str()) + (int)objectGroup->getPositionOffset().y;
                    pointDict["y"] = Value(y);
                }
                
                // add to points array
                pointsArray.push_back(Value(pointDict));
            }
            
            dict["polylinePoints"] = Value(pointsArray);
        }
    }
}
void TMXMapInfo::endElement(void *ctx, const char *name)
{
    CC_UNUSED_PARAM(ctx);
    TMXMapInfo *tmxMapInfo = this;
    std::string elementName = name;

    if (elementName == "data")
    {
        if (tmxMapInfo->getLayerAttribs() & TMXLayerAttribBase64)
        {
            tmxMapInfo->setStoringCharacters(false);
            
            TMXLayerInfo* layer = tmxMapInfo->getLayers().back();
            
            std::string currentString = tmxMapInfo->getCurrentString();
            unsigned char *buffer;
            auto len = base64Decode((unsigned char*)currentString.c_str(), (unsigned int)currentString.length(), &buffer);
            if (!buffer)
            {
                CCLOG("cocos2d: TiledMap: decode data error");
                return;
            }
            
            if (tmxMapInfo->getLayerAttribs() & (TMXLayerAttribGzip | TMXLayerAttribZlib))
            {
                unsigned char *deflated = nullptr;
                Size s = layer->_layerSize;
                // int sizeHint = s.width * s.height * sizeof(uint32_t);
                ssize_t sizeHint = s.width * s.height * sizeof(unsigned int);
                
                ssize_t CC_UNUSED inflatedLen = ZipUtils::inflateMemoryWithHint(buffer, len, &deflated, sizeHint);
                CCASSERT(inflatedLen == sizeHint, "inflatedLen should be equal to sizeHint!");
                
                free(buffer);
                buffer = nullptr;
                
                if (!deflated)
                {
                    CCLOG("cocos2d: TiledMap: inflate data error");
                    return;
                }
                
                layer->_tiles = reinterpret_cast<uint32_t*>(deflated);
            }
            else
            {
                layer->_tiles = reinterpret_cast<uint32_t*>(buffer);
            }
            
            tmxMapInfo->setCurrentString("");
        }
        else if (tmxMapInfo->getLayerAttribs() & TMXLayerAttribNone)
        {
            _xmlTileIndex = 0;
        }
    }
    else if (elementName == "map")
    {
        // The map element has ended
        tmxMapInfo->setParentElement(TMXPropertyNone);
    }    
    else if (elementName == "layer")
    {
        // The layer element has ended
        tmxMapInfo->setParentElement(TMXPropertyNone);
    }
    else if (elementName == "objectgroup")
    {
        // The objectgroup element has ended
        tmxMapInfo->setParentElement(TMXPropertyNone);
    } 
    else if (elementName == "object") 
    {
        // The object element has ended
        tmxMapInfo->setParentElement(TMXPropertyNone);
    }
    else if (elementName == "tileset")
    {
        _recordFirstGID = true;
    }
}
Example #3
0
void TMXMapInfo::endElement(void *ctx, const char *name)
{
    CC_UNUSED_PARAM(ctx);
    TMXMapInfo *tmxMapInfo = this;
    std::string elementName = name;

    if (elementName == "data")
    {
        if (tmxMapInfo->getLayerAttribs() & TMXLayerAttribBase64)
        {
            tmxMapInfo->setStoringCharacters(false);
            
            TMXLayerInfo* layer = tmxMapInfo->getLayers().back();
            
            std::string currentString = tmxMapInfo->getCurrentString();
            unsigned char *buffer;
            auto len = base64Decode((unsigned char*)currentString.c_str(), (unsigned int)currentString.length(), &buffer);
            if (!buffer)
            {
                CCLOG("cocos2d: TiledMap: decode data error");
                return;
            }
            
            if (tmxMapInfo->getLayerAttribs() & (TMXLayerAttribGzip | TMXLayerAttribZlib))
            {
                unsigned char *deflated = nullptr;
                Size s = layer->_layerSize;
                // int sizeHint = s.width * s.height * sizeof(uint32_t);
                ssize_t sizeHint = s.width * s.height * sizeof(unsigned int);
                
                ssize_t CC_UNUSED inflatedLen = ZipUtils::inflateMemoryWithHint(buffer, len, &deflated, sizeHint);
                CCASSERT(inflatedLen == sizeHint, "inflatedLen should be equal to sizeHint!");
                
                free(buffer);
                buffer = nullptr;
                
                if (!deflated)
                {
                    CCLOG("cocos2d: TiledMap: inflate data error");
                    return;
                }
                
                layer->_tiles = reinterpret_cast<uint32_t*>(deflated);
            }
            else
            {
                layer->_tiles = reinterpret_cast<uint32_t*>(buffer);
            }
            
            tmxMapInfo->setCurrentString("");
        }
        else if (tmxMapInfo->getLayerAttribs() & TMXLayerAttribCSV)
        {
            unsigned char *buffer;

            TMXLayerInfo* layer = tmxMapInfo->getLayers().back();

            tmxMapInfo->setStoringCharacters(false);
            std::string currentString = tmxMapInfo->getCurrentString();

            vector<string> gidTokens;
            istringstream filestr(currentString);
            string sRow;
            while(getline(filestr, sRow, '\n')) {
                string sGID;
                istringstream rowstr(sRow);
                while (getline(rowstr, sGID, ',')) {
                    gidTokens.push_back(sGID);
                }
            }

            // 32-bits per gid
            buffer = (unsigned char*)malloc(gidTokens.size() * 4);
            if (!buffer)
            {
                CCLOG("cocos2d: TiledMap: CSV buffer not allocated.");
                return;
            }

            uint32_t* bufferPtr = reinterpret_cast<uint32_t*>(buffer);
            for(auto gidToken : gidTokens) {
                auto tileGid = (uint32_t)strtol(gidToken.c_str(), nullptr, 10);
                *bufferPtr = tileGid;
                bufferPtr++;
            }

            layer->_tiles = reinterpret_cast<uint32_t*>(buffer);

            tmxMapInfo->setCurrentString("");
        }
        else if (tmxMapInfo->getLayerAttribs() & TMXLayerAttribNone)
        {
            _xmlTileIndex = 0;
        }
    }
    else if (elementName == "map")
    {
        // The map element has ended
        tmxMapInfo->setParentElement(TMXPropertyNone);
    }    
    else if (elementName == "layer")
    {
        // The layer element has ended
        tmxMapInfo->setParentElement(TMXPropertyNone);
    }
    else if (elementName == "objectgroup")
    {
        // The objectgroup element has ended
        tmxMapInfo->setParentElement(TMXPropertyNone);
    } 
    else if (elementName == "object") 
    {
        // The object element has ended
        tmxMapInfo->setParentElement(TMXPropertyNone);
    }
    else if (elementName == "tileset")
    {
        _recordFirstGID = true;
    }
}