axmol/core/2d/FastTMXTiledMap.cpp

/****************************************************************************
Copyright (c) 2009-2010 Ricardo Quesada
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2011      Zynga Inc.
Copyright (c) 2013-2016 Chukong Technologies Inc.
Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.

https://axmolengine.github.io/

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all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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****************************************************************************/
#include "2d/FastTMXTiledMap.h"
#include "2d/FastTMXLayer.h"
#include "base/UTF8.h"

NS_AX_BEGIN

// implementation FastTMXTiledMap

FastTMXTiledMap* FastTMXTiledMap::create(std::string_view tmxFile)
{
    FastTMXTiledMap* ret = new FastTMXTiledMap();
    if (ret->initWithTMXFile(tmxFile))
    {
        ret->autorelease();
        return ret;
    }
    AX_SAFE_DELETE(ret);
    return nullptr;
}

FastTMXTiledMap* FastTMXTiledMap::createWithXML(std::string_view tmxString, std::string_view resourcePath)
{
    FastTMXTiledMap* ret = new FastTMXTiledMap();
    if (ret->initWithXML(tmxString, resourcePath))
    {
        ret->autorelease();
        return ret;
    }
    AX_SAFE_DELETE(ret);
    return nullptr;
}

bool FastTMXTiledMap::initWithTMXFile(std::string_view tmxFile)
{
    AXASSERT(tmxFile.size() > 0, "FastTMXTiledMap: tmx file should not be empty");

    setContentSize(Vec2::ZERO);

    TMXMapInfo* mapInfo = TMXMapInfo::create(tmxFile);

    if (!mapInfo)
    {
        return false;
    }
    AXASSERT(!mapInfo->getTilesets().empty(), "FastTMXTiledMap: Map not found. Please check the filename.");
    buildWithMapInfo(mapInfo);

    _tmxFile = tmxFile;

    return true;
}

bool FastTMXTiledMap::initWithXML(std::string_view tmxString, std::string_view resourcePath)
{
    setContentSize(Vec2::ZERO);

    TMXMapInfo* mapInfo = TMXMapInfo::createWithXML(tmxString, resourcePath);

    AXASSERT(!mapInfo->getTilesets().empty(), "FastTMXTiledMap: Map not found. Please check the filename.");
    buildWithMapInfo(mapInfo);

    return true;
}

FastTMXTiledMap::FastTMXTiledMap() : _mapSize(Vec2::ZERO), _tileSize(Vec2::ZERO) {}

FastTMXTiledMap::~FastTMXTiledMap() {}

// private
FastTMXLayer* FastTMXTiledMap::parseLayer(TMXLayerInfo* layerInfo, TMXMapInfo* mapInfo)
{
    TMXTilesetInfo* tileset = tilesetForLayer(layerInfo, mapInfo);
    if (tileset == nullptr)
        return nullptr;

    FastTMXLayer* layer = FastTMXLayer::create(tileset, layerInfo, mapInfo);

    // tell the layerinfo to release the ownership of the tiles map.
    layerInfo->_ownTiles = false;
    layer->setupTiles();

    return layer;
}

TMXTilesetInfo* FastTMXTiledMap::tilesetForLayer(TMXLayerInfo* layerInfo, TMXMapInfo* mapInfo)
{
    Vec2 size      = layerInfo->_layerSize;
    auto& tilesets = mapInfo->getTilesets();

    for (auto iter = tilesets.crbegin(), iterCrend = tilesets.crend(); iter != iterCrend; ++iter)
    {
        TMXTilesetInfo* tilesetInfo = *iter;
        if (tilesetInfo)
        {
            for (int y = 0; y < size.height; y++)
            {
                for (int x = 0; x < size.width; x++)
                {
                    uint32_t pos = static_cast<uint32_t>(x + size.width * y);
                    uint32_t gid = layerInfo->_tiles[pos];

                    // gid are stored in little endian.
                    // if host is big endian, then swap
                    // if( o == CFByteOrderBigEndian )
                    //    gid = CFSwapInt32( gid );
                    /* We support little endian.*/

                    // FIXME: gid == 0 --> empty tile
                    if (gid != 0)
                    {
                        // Optimization: quick return
                        // if the layer is invalid (more than 1 tileset per layer) an AXASSERT will be thrown later
                        if ((gid & kTMXFlippedMask) >= static_cast<uint32_t>(tilesetInfo->_firstGid))
                        {
                            return tilesetInfo;
                        }
                    }
                }
            }
        }
    }

    // If all the tiles are 0, return empty tileset
    AXLOG("axmol: Warning: TMX Layer '%s' has no tiles", layerInfo->_name.c_str());
    return nullptr;
}

void FastTMXTiledMap::buildWithMapInfo(TMXMapInfo* mapInfo)
{
    _mapSize        = mapInfo->getMapSize();
    _tileSize       = mapInfo->getTileSize();
    _mapOrientation = mapInfo->getOrientation();

    _objectGroups = mapInfo->getObjectGroups();

    _properties = mapInfo->getProperties();

    _tileProperties = mapInfo->getTileProperties();

    int idx = 0;

    auto& layers = mapInfo->getLayers();
    for (const auto& layerInfo : layers)
    {
        if (layerInfo->_visible)
        {
            FastTMXLayer* child = parseLayer(layerInfo, mapInfo);
            if (child == nullptr)
            {
                idx++;
                continue;
            }
            addChild(child, idx, idx);

            // update content size with the max size
            const Vec2& childSize = child->getContentSize();
            Vec2 currentSize      = this->getContentSize();
            currentSize.width     = std::max(currentSize.width, childSize.width);
            currentSize.height    = std::max(currentSize.height, childSize.height);
            this->setContentSize(currentSize);

            idx++;
        }
    }

    _layerCount = idx;
}

// public
FastTMXLayer* FastTMXTiledMap::getLayer(std::string_view layerName) const
{
    AXASSERT(!layerName.empty(), "Invalid layer name!");

    for (auto&& child : _children)
    {
        FastTMXLayer* layer = dynamic_cast<FastTMXLayer*>(child);
        if (layer)
        {
            if (layerName.compare(layer->getLayerName()) == 0)
            {
                return layer;
            }
        }
    }

    // layer not found
    return nullptr;
}

TMXObjectGroup* FastTMXTiledMap::getObjectGroup(std::string_view groupName) const
{
    AXASSERT(!groupName.empty(), "Invalid group name!");

    if (_objectGroups.size() > 0)
    {
        for (const auto& objectGroup : _objectGroups)
        {
            if (objectGroup && objectGroup->getGroupName() == groupName)
            {
                return objectGroup;
            }
        }
    }

    // objectGroup not found
    return nullptr;
}

Value FastTMXTiledMap::getProperty(std::string_view propertyName) const
{
    auto propsItr = _properties.find(propertyName);
    if (propsItr != _properties.end())
        return propsItr->second;

    return Value();
}

Value FastTMXTiledMap::getPropertiesForGID(int GID) const
{
    auto propsItr = _tileProperties.find(GID);
    if (propsItr != _tileProperties.end())
        return propsItr->second;

    return Value();
}

std::string FastTMXTiledMap::getDescription() const
{
    return StringUtils::format("<FastTMXTiledMap | Tag = %d, Layers = %d", _tag, static_cast<int>(_children.size()));
}

void FastTMXTiledMap::setTileAnimEnabled(bool enabled)
{
    for (auto&& child : _children)
    {
        FastTMXLayer* layer = dynamic_cast<FastTMXLayer*>(child);
        if (layer)
        {
            if (layer->hasTileAnimation())
            {
                if (enabled)
                    layer->getTileAnimManager()->startAll();
                else
                    layer->getTileAnimManager()->stopAll();
            }
        }
    }
}

NS_AX_END