/**
* Render a section of the tile map
*
* @param x The x location to render at
* @param y The y location to render at
* @param sx The x tile location to start rendering
* @param sy The y tile location to start rendering
* @param width The width of the section to render (in tiles)
* @param height The height of the secton to render (in tiles)
* @param lineByLine True if we should render line by line, i.e. giving us a chance to render
* something else between lines (@see {@link #renderedLine(int, int, int)}
*/
public void render(int x, int y, int sx, int sy, int width, int height, boolean lineByLine) {
switch (orientation) {
case ORTHOGONAL:
for (int ty = 0; ty < height; ty++) {
for (int i = 0; i < layers.size(); i++) {
Layer layer = (Layer) layers.get(i);
layer.render(x, y, sx, sy, width, ty, lineByLine, tileWidth, tileHeight);
}
}
break;
case ISOMETRIC:
renderIsometricMap(x, y, sx, sy, width, height, null, lineByLine);
break;
default:
// log error or something
}
}
/**
* Load a TilED map
*
* @param in The input stream from which to load the map
* @param tileSetsLocation The location from which we can retrieve tileset images
* @throws SlickException Indicates a failure to parse the map or find a tileset
*/
private void load(InputStream in, String tileSetsLocation) throws SlickException {
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();
if (docElement.getAttribute("orientation").equals("orthogonal")) {
orientation = ORTHOGONAL;
} else {
orientation = ISOMETRIC;
}
width = Integer.parseInt(docElement.getAttribute("width"));
height = Integer.parseInt(docElement.getAttribute("height"));
tileWidth = Integer.parseInt(docElement.getAttribute("tilewidth"));
tileHeight = Integer.parseInt(docElement.getAttribute("tileheight"));
// now read the map properties
Element propsElement = (Element) docElement.getElementsByTagName("properties").item(0);
if (propsElement != null) {
NodeList properties = propsElement.getElementsByTagName("property");
if (properties != null) {
props = new Properties();
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) {
TileSet tileSet = null;
TileSet lastSet = null;
NodeList setNodes = docElement.getElementsByTagName("tileset");
for (int i = 0; i < setNodes.getLength(); i++) {
Element current = (Element) setNodes.item(i);
tileSet = new TileSet(this, current, !headless);
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);
Layer layer = new Layer(this, current);
layer.index = i;
layers.add(layer);
}
// acquire object-groups
NodeList objectGroupNodes = docElement.getElementsByTagName("objectgroup");
for (int i = 0; i < objectGroupNodes.getLength(); i++) {
Element current = (Element) objectGroupNodes.item(i);
ObjectGroup objectGroup = new ObjectGroup(current, this);
objectGroup.index = i;
objectGroups.add(objectGroup);
}
} catch (Exception e) {
Log.error(e);
throw new SlickException("Failed to parse tilemap", e);
}
}
/**
* Render of isometric map renders.
*
* @param x The x location to render at
* @param y The y location to render at
* @param sx The x tile location to start rendering
* @param sy The y tile location to start rendering
* @param width The width of the section to render (in tiles)
* @param height The height of the section to render (in tiles)
* @param layer if this is null all layers are rendered, if not only the selected layer is
* renderered
* @param lineByLine True if we should render line by line, i.e. giving us a chance to render
* something else between lines (@see {@link #renderedLine(int, int, int)}
* <p>TODO: [Isometric map] Render stuff between lines, concept of line differs from ortho
* maps
*/
protected void renderIsometricMap(
int x, int y, int sx, int sy, int width, int height, Layer layer, boolean lineByLine) {
ArrayList drawLayers = layers;
if (layer != null) {
drawLayers = new ArrayList();
drawLayers.add(layer);
}
int maxCount = width * height;
int allCount = 0;
boolean allProcessed = false;
int initialLineX = x;
int initialLineY = y;
int startLineTileX = 0;
int startLineTileY = 0;
while (!allProcessed) {
int currentTileX = startLineTileX;
int currentTileY = startLineTileY;
int currentLineX = initialLineX;
int min = 0;
if (height > width)
min =
(startLineTileY < width - 1)
? startLineTileY
: (width - currentTileX < height) ? width - currentTileX - 1 : width - 1;
else
min =
(startLineTileY < height - 1)
? startLineTileY
: (width - currentTileX < height) ? width - currentTileX - 1 : height - 1;
for (int burner = 0; burner <= min; currentTileX++, currentTileY--, burner++) {
for (int layerIdx = 0; layerIdx < drawLayers.size(); layerIdx++) {
Layer currentLayer = (Layer) drawLayers.get(layerIdx);
currentLayer.render(
currentLineX,
initialLineY,
currentTileX,
currentTileY,
1,
0,
lineByLine,
tileWidth,
tileHeight);
}
currentLineX += tileWidth;
allCount++;
}
if (startLineTileY < (height - 1)) {
startLineTileY += 1;
initialLineX -= tileWidth / 2;
initialLineY += tileHeight / 2;
} else {
startLineTileX += 1;
initialLineX += tileWidth / 2;
initialLineY += tileHeight / 2;
}
if (allCount >= maxCount) allProcessed = true;
}
}
/**
* Set the global ID of a tile at specified location in the map
*
* @param x The x location of the tile
* @param y The y location of the tile
* @param layerIndex The index of the layer to set the new tileid
* @param tileid The tileid to be set
*/
public void setTileId(int x, int y, int layerIndex, int tileid) {
Layer layer = (Layer) layers.get(layerIndex);
layer.setTileID(x, y, tileid);
}
/**
* Get the global ID of a tile at specified location in the map
*
* @param x The x location of the tile
* @param y The y location of the tile
* @param layerIndex The index of the layer to retireve the tile from
* @return The global ID of the tile
*/
public int getTileId(int x, int y, int layerIndex) {
Layer layer = (Layer) layers.get(layerIndex);
return layer.getTileID(x, y);
}