public GeoDriverArray() {
// load region files
_blocks = new byte[GeoStructure.GEO_BLOCKS_X][GeoStructure.GEO_BLOCKS_Y][];
// prepare null block
_nullBlock = new byte[] {GeoStructure.NULL};
// default null and flat block NSWE
_nswe = Config.GEODATA_FORMAT != GeoFormat.L2D ? 0x0F : (byte) 0xFF;
// load geo files according to geoengine config setup
final ExProperties props = Config.load(Config.GEOENGINE_FILE);
int loaded = 0;
for (int rx = L2World.TILE_X_MIN; rx <= L2World.TILE_X_MAX; rx++) {
for (int ry = L2World.TILE_Y_MIN; ry <= L2World.TILE_Y_MAX; ry++) {
if (props.containsKey(String.valueOf(rx) + "_" + String.valueOf(ry))) {
// region file is load-able, try to load it
if (loadGeoBlocks(rx, ry)) loaded++;
} else {
// region file is not load-able, load null blocks
loadNullBlocks(rx, ry);
}
}
}
_log.info(
"GeoDriverArray: Loaded "
+ loaded
+ " "
+ Config.GEODATA_FORMAT.toString()
+ " region files.");
// release the bytebuffer for loading of multilayer blocks
_list = null;
}
/**
* Loads geodata from a file. When diagonal strategy is enabled, precalculates diagonal flags for
* whole file. When file does not exist, is corrupted or not consistent, loads none geodata.
*
* @param regionX : Geodata file region X coordinate.
* @param regionY : Geodata file region Y coordinate.
* @return boolean : True, when geodata file was loaded without problem.
*/
private final boolean loadGeoBlocks(int regionX, int regionY) {
final String filename = String.format(Config.GEODATA_FORMAT.getFilename(), regionX, regionY);
// standard load
try (RandomAccessFile raf = new RandomAccessFile(Config.GEODATA_PATH + filename, "r");
FileChannel fc = raf.getChannel()) {
// initialize file buffer
MappedByteBuffer buffer = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size()).load();
buffer.order(ByteOrder.LITTLE_ENDIAN);
// load 18B header for L2off geodata (1st and 2nd byte...region X and Y)
if (Config.GEODATA_FORMAT == GeoFormat.L2OFF) {
for (int i = 0; i < 18; i++) buffer.get();
}
// get block indexes
final int blockX = (regionX - L2World.TILE_X_MIN) * GeoStructure.REGION_BLOCKS_X;
final int blockY = (regionY - L2World.TILE_Y_MIN) * GeoStructure.REGION_BLOCKS_Y;
// loop over region blocks
for (int ix = 0; ix < GeoStructure.REGION_BLOCKS_X; ix++) {
for (int iy = 0; iy < GeoStructure.REGION_BLOCKS_Y; iy++) {
if (Config.GEODATA_FORMAT != GeoFormat.L2OFF) {
// get block type
final byte type = buffer.get();
// load block according to block type
switch (type) {
case GeoStructure.TYPE_FLAT_L2J_L2OFF:
case GeoStructure.TYPE_FLAT_L2D:
_blocks[blockX + ix][blockY + iy] = loadFlatBlock(buffer);
break;
case GeoStructure.TYPE_COMPLEX_L2J:
case GeoStructure.TYPE_COMPLEX_L2D:
_blocks[blockX + ix][blockY + iy] = loadComplexBlock(buffer);
break;
case GeoStructure.TYPE_MULTILAYER_L2J:
case GeoStructure.TYPE_MULTILAYER_L2D:
_blocks[blockX + ix][blockY + iy] = loadMultilayerBlock(buffer);
break;
default:
throw new IllegalArgumentException("Unknown block type: " + type);
}
} else {
// get block type
final short type = buffer.getShort();
// load block according to block type
switch (type) {
case GeoStructure.TYPE_FLAT_L2J_L2OFF:
_blocks[blockX + ix][blockY + iy] = loadFlatBlock(buffer);
break;
case GeoStructure.TYPE_COMPLEX_L2OFF:
_blocks[blockX + ix][blockY + iy] = loadComplexBlock(buffer);
break;
default:
_blocks[blockX + ix][blockY + iy] = loadMultilayerBlock(buffer);
break;
}
}
}
}
// check data consistency
if (buffer.remaining() > 0)
_log.warning(
"GeoDriverArray: Region file "
+ filename
+ " can be corrupted, remaining "
+ buffer.remaining()
+ " bytes to read.");
// loading was successful
return true;
} catch (Exception e) {
// an error occured while loading, load null blocks
_log.warning("GeoDriverArray: Error while loading " + filename + " region file.");
_log.warning(e.getMessage());
// replace whole region file with null blocks
loadNullBlocks(regionX, regionY);
// loading was not successful
return false;
}
}