/**
* @param is
* @throws IOException
*/
public void parse(InputStream is) throws IOException {
DataInputStream dis = new DataInputStream(is);
if (dis.readInt() != 0x4d52474e) {
throw new IOException("Invalid file magic");
}
int format = dis.readByte();
if (format > 1 || format < 1) {
throw new IOException("Unsupported format");
}
int locHash = dis.readUnsignedShort();
int regionX = locHash >> 8;
int regionY = locHash & 0xff;
if (x != regionX || y != regionY) {
throw new IOException("Location mismatch");
}
int chk;
while ((chk = dis.readUnsignedByte()) != chk_EOF) {
switch (chk) {
case chk_LOCALE:
{
int config = dis.readUnsignedShort();
int loc = dis.readUnsignedShort();
int x = loc >> 6 & 0x3f;
int y = loc & 0x3f;
int plane = loc >> 12;
int ori = dis.readUnsignedByte();
int type = ori >> 2;
int orientation = ori & 0x3;
int group = GameObjectGroup.getGroupForType(type);
int chunkX = x >> 3, chunkY = y >> 3;
int localX = x & 0x7, localY = y & 0x7;
Block block = getBlock(plane, chunkX, chunkY);
BlockTile tile = block.getTile(localX, localY);
GameObject gameObject = new GameObject(config, type, orientation, true);
tile.setLocale(group, gameObject);
}
break;
case chk_CLIP:
{
int lhash;
while ((lhash = dis.readUnsignedShort()) != clip_EOD) {
int x = lhash >> 8 & 0x3f;
int y = lhash >> 2 & 0x3f;
int p = lhash & 0x3;
int first = dis.readUnsignedByte();
int value = first & 0x3f;
int length = first >> 6 & 0x3;
if (length >= 2) {
value |= dis.readUnsignedByte() << 6;
}
if (length >= 3) {
value |= dis.readUnsignedByte() << 14;
}
TraversalMap traversalMap = traversalMaps[p];
traversalMap.set(x, y, value);
}
}
break;
case chk_NPC:
{
int type = dis.readUnsignedShort();
int loc = dis.readUnsignedByte();
int x = loc >> 6 & 0x3f;
int y = loc & 0x3f;
int plane = loc >> 12;
}
break;
default:
throw new IOException("Bad config code");
}
}
}