public String getTileProperty(int tileID, String propertyName, String def) {
if (tileID == 0) {
return def;
}
TMXTileSet set = findTileSet(tileID);
TMXProperty props = set.getProperties(tileID);
if (props == null) {
return def;
}
return props.getProperty(propertyName, def);
}
/**
* 根据TMX地图描述创建一个新层
*
* @param map
* @param element
* @throws RuntimeException
*/
public TMXLayer(TMXTiledMap map, Element element) throws RuntimeException {
this.map = map;
name = element.getAttribute("name");
width = Integer.parseInt(element.getAttribute("width"));
height = Integer.parseInt(element.getAttribute("height"));
data = new int[width][height][3];
// 获得当前图层属性
Element propsElement = (Element) element.getElementsByTagName("properties").item(0);
if (propsElement != null) {
NodeList properties = propsElement.getElementsByTagName("property");
if (properties != null) {
props = new TMXProperty();
for (int p = 0; p < properties.getLength(); p++) {
Element propElement = (Element) properties.item(p);
String name = propElement.getAttribute("name");
String value = propElement.getAttribute("value");
props.setProperty(name, value);
}
}
}
Element dataNode = (Element) element.getElementsByTagName("data").item(0);
String encoding = dataNode.getAttribute("encoding");
String compression = dataNode.getAttribute("compression");
// 进行base64的压缩解码
if ("base64".equals(encoding) && "gzip".equals(compression)) {
try {
Node cdata = dataNode.getFirstChild();
char[] enc = cdata.getNodeValue().trim().toCharArray();
byte[] dec = decodeBase64(enc);
GZIPInputStream is = new GZIPInputStream(new ByteArrayInputStream(dec));
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
int tileId = 0;
tileId |= is.read();
tileId |= is.read() << 8;
tileId |= is.read() << 16;
tileId |= is.read() << 24;
if (tileId == 0) {
data[x][y][0] = -1;
data[x][y][1] = 0;
data[x][y][2] = 0;
} else {
TMXTileSet set = map.findTileSet(tileId);
if (set != null) {
data[x][y][0] = set.index;
data[x][y][1] = tileId - set.firstGID;
}
data[x][y][2] = tileId;
}
}
}
} catch (IOException e) {
throw new RuntimeException("Unable to decode base64 !");
}
} else {
throw new RuntimeException(
"Unsupport tiled map type "
+ encoding
+ ","
+ compression
+ " only gzip base64 Support !");
}
}
private void load(InputStream in, String tileSetsLocation) throws RuntimeException {
screenRect = LSystem.screenRect;
tilesLocation = tileSetsLocation;
try {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setValidating(false);
DocumentBuilder builder = factory.newDocumentBuilder();
builder.setEntityResolver(
new EntityResolver() {
public InputSource resolveEntity(String publicId, String systemId)
throws SAXException, IOException {
return new InputSource(new ByteArrayInputStream(new byte[0]));
}
});
Document doc = builder.parse(in);
Element docElement = doc.getDocumentElement();
String orient = docElement.getAttribute("orientation");
if (!orient.equals("orthogonal")) {
throw new RuntimeException("Only orthogonal maps supported, found " + orient);
}
width = Integer.parseInt(docElement.getAttribute("width"));
height = Integer.parseInt(docElement.getAttribute("height"));
tileWidth = Integer.parseInt(docElement.getAttribute("tilewidth"));
tileHeight = Integer.parseInt(docElement.getAttribute("tileheight"));
Element propsElement = (Element) docElement.getElementsByTagName("properties").item(0);
if (propsElement != null) {
NodeList properties = propsElement.getElementsByTagName("property");
if (properties != null) {
props = new TMXProperty();
for (int p = 0; p < properties.getLength(); p++) {
Element propElement = (Element) properties.item(p);
String name = propElement.getAttribute("name");
String value = propElement.getAttribute("value");
props.setProperty(name, value);
}
}
}
if (loadTileSets) {
TMXTileSet tileSet = null;
TMXTileSet lastSet = null;
NodeList setNodes = docElement.getElementsByTagName("tileset");
for (int i = 0; i < setNodes.getLength(); i++) {
Element current = (Element) setNodes.item(i);
tileSet = new TMXTileSet(this, current, true);
tileSet.index = i;
if (lastSet != null) {
lastSet.setLimit(tileSet.firstGID - 1);
}
lastSet = tileSet;
tileSets.add(tileSet);
}
}
NodeList layerNodes = docElement.getElementsByTagName("layer");
for (int i = 0; i < layerNodes.getLength(); i++) {
Element current = (Element) layerNodes.item(i);
TMXLayer layer = new TMXLayer(this, current);
layer.index = i;
layers.add(layer);
}
NodeList objectGroupNodes = docElement.getElementsByTagName("objectgroup");
for (int i = 0; i < objectGroupNodes.getLength(); i++) {
Element current = (Element) objectGroupNodes.item(i);
TMXTileGroup objectGroup = new TMXTileGroup(current);
objectGroup.index = i;
objectGroups.add(objectGroup);
}
defWidth = screenRect.getWidth() / tileWidth;
defHeight = screenRect.getHeight() / tileHeight;
} catch (Exception ex) {
throw new RuntimeException("Failed to parse map", ex);
}
}
public String getMapProperty(String propertyName, String def) {
if (props == null) return def;
return props.getProperty(propertyName, def);
}
