public static int createNewMap(World world, byte scale) {
int id = world.getUniqueDataId("height_map");
HeightMapData data = new HeightMapData(id, false);
data.scale = scale;
data.markDirty();
world.setItemData(data.mapName, data);
return id;
}
@Override
protected void readFromStream(DataInput input) throws IOException {
int length = ByteUtils.readVLI(input);
for (int i = 0; i < length; i++) {
int id = ByteUtils.readVLI(input);
HeightMapData data = new HeightMapData(id, false);
data.readFromStream(input);
maps.put(id, data);
}
}
@Override
protected void writeToStream(DataOutput output) throws IOException {
int size = 0;
for (HeightMapData data : maps.values()) if (data.isValid()) size++;
ByteUtils.writeVLI(output, size);
for (Map.Entry<Integer, HeightMapData> e : maps.entrySet()) {
HeightMapData map = e.getValue();
if (map.isValid()) {
ByteUtils.writeVLI(output, e.getKey());
map.writeToStream(output);
} else Log.warn("Trying to propagate invalid map data %d", e.getKey());
}
}
public static HeightMapData getMapData(World world, int mapId) {
if (mapId < 0) return HeightMapData.INVALID;
String name = HeightMapData.getMapName(mapId);
HeightMapData result = (HeightMapData) world.loadItemData(HeightMapData.class, name);
return result != null ? result : HeightMapData.EMPTY;
}
public void markDataUpdated(World world, int mapId) {
HeightMapData data = getMapData(world, mapId);
data.markDirty();
mapsToUpdate.add(mapId);
}