Relocate Source to proper directory.

src/main/java/appeng/services/helpers/CompassRegion.java

@@ -0,0 +1,172 @@
+package appeng.services.helpers;
+
+import java.io.File;
+import java.io.RandomAccessFile;
+import java.nio.ByteBuffer;
+import java.nio.channels.FileChannel;
+
+import appeng.core.AELog;
+
+public class CompassRegion
+{
+
+	final int low_x;
+	final int low_z;
+
+	final int hi_x;
+	final int hi_z;
+
+	final int world;
+
+	boolean hasFile = false;
+	final File rootFolder;
+	RandomAccessFile raf = null;
+	ByteBuffer buffer;
+
+	public void close()
+	{
+		try
+		{
+			if ( hasFile )
+			{
+				buffer = null;
+				raf.close();
+				raf = null;
+				hasFile = false;
+			}
+		}
+		catch (Throwable t)
+		{
+			throw new CompassException( t );
+		}
+	}
+
+	public CompassRegion(int cx, int cz, int worldID, File rootFolder) {
+
+		world = worldID;
+		this.rootFolder = rootFolder;
+
+		int region_x = cx >> 10;
+		int region_z = cz >> 10;
+
+		low_x = region_x << 10;
+		low_z = region_z << 10;
+
+		hi_x = low_x + 1024;
+		hi_z = low_z + 1024;
+
+		openFile( false );
+	}
+
+	public boolean hasBeacon(int cx, int cz)
+	{
+		if ( hasFile )
+		{
+			cx = cx & 0x3FF;
+			cz = cz & 0x3FF;
+
+			int val = read( cx, cz );
+			if ( val != 0 )
+				return true;
+		}
+
+		return false;
+	}
+
+	public void setHasBeacon(int cx, int cz, int cdy, boolean hasBeacon)
+	{
+		cx &= 0x3FF;
+		cz &= 0x3FF;
+
+		openFile( hasBeacon );
+
+		if ( hasFile )
+		{
+			int val = read( cx, cz );
+			int originalVal = val;
+
+			if ( hasBeacon )
+				val |= 1 << cdy;
+			else
+				val &= ~(1 << cdy);
+
+			if ( originalVal != val )
+				write( cx, cz, val );
+		}
+	}
+
+	private void write(int cx, int cz, int val)
+	{
+		try
+		{
+			buffer.put( cx + cz * 0x400, (byte) val );
+			// raf.seek( cx + cz * 0x400 );
+			// raf.writeByte( val );
+		}
+		catch (Throwable t)
+		{
+			throw new CompassException( t );
+		}
+	}
+
+	private int read(int cx, int cz)
+	{
+		try
+		{
+			return buffer.get( cx + cz * 0x400 );
+			// raf.seek( cx + cz * 0x400 );
+			// return raf.readByte();
+		}
+		catch (IndexOutOfBoundsException outofBounds)
+		{
+			return 0;
+		}
+		catch (Throwable t)
+		{
+			throw new CompassException( t );
+		}
+	}
+
+	private void openFile(boolean create)
+	{
+		File fName = getFileName();
+		if ( hasFile )
+			return;
+
+		if ( create || fileExists( fName ) )
+		{
+			try
+			{
+				raf = new RandomAccessFile( fName, "rw" );
+				FileChannel fc = raf.getChannel();
+				buffer = fc.map( FileChannel.MapMode.READ_WRITE, 0, 0x400 * 0x400 );// fc.size() );
+				hasFile = true;
+			}
+			catch (Throwable t)
+			{
+				throw new CompassException( t );
+			}
+		}
+
+	}
+
+	private boolean fileExists(File name)
+	{
+		return name.exists() && name.isFile();
+	}
+
+	private File getFileName()
+	{
+		String folder = rootFolder.getPath() + File.separatorChar + "compass";
+		File folderFile = new File( folder );
+
+		if ( !folderFile.exists() || !folderFile.isDirectory() )
+		{
+			if ( !folderFile.mkdir() )
+				AELog.info( "Failed to created AE2/compass/" );
+		}
+
+		return new File( folder + File.separatorChar + world + "_" + low_x + "_" + low_z + ".dat" );
+	}
+
+}