update GEOEngine with the Code from https://github.com/zzsort/monono2

AL-Game/src/com/aionemu/gameserver/geoEngine/GeoWorldLoader.java

@@ -89,7 +89,7 @@ public static Map<String, Spatial> loadMeshs(String fileName) throws IOException
 			for (int c = 0; c < modelCount; c++) {
 				Mesh m = new Mesh();
 
-				int vectorCount = (geo.getShort()) * 3;
+				int vectorCount = (geo.getInt()) * 3;
 				ByteBuffer floatBuffer = ByteBuffer.allocateDirect(vectorCount * 4);
 				FloatBuffer vertices = floatBuffer.asFloatBuffer();
 				for (int x = 0; x < vectorCount; x++) {
@@ -157,15 +157,26 @@ public static boolean loadWorld(int worldId, Map<String, Spatial> models, GeoMap
 		geo = roChannel.map(FileChannel.MapMode.READ_ONLY, 0, (int) roChannel.size()).load();
 		geo.order(ByteOrder.LITTLE_ENDIAN);
 		if (geo.get() == 0) {
-			map.setTerrainData(new short[] { geo.getShort() });
-		}
-		else {
+			// no terrain
+			map.setTerrainData(new short[]{geo.getShort()});
+			/*int cutoutSize =*/ geo.getInt();
+		} else {
 			int size = geo.getInt();
 			short[] terrainData = new short[size];
 			for (int i = 0; i < size; i++) {
 				terrainData[i] = geo.getShort();
 			}
 			map.setTerrainData(terrainData);
+
+			// read list of terrain indexes to remove.
+			int cutoutSize = geo.getInt();
+			if (cutoutSize > 0) {
+				int[] cutoutData = new int[cutoutSize];
+				for (int i = 0; i < cutoutSize; i++) {
+					cutoutData[i] = geo.getInt();
+				}
+				map.setTerrainCutouts(cutoutData); 
+			}
 		}
 
 		while (geo.hasRemaining()) {
@@ -179,6 +190,7 @@ public static boolean loadWorld(int worldId, Map<String, Spatial> models, GeoMap
 				matrix[i] = geo.getFloat();
 			}
 			float scale = geo.getFloat();
+			geo.get(); // TODO : use the data: EventType eventType = EventType.fromByte(geo.get());
 			Matrix3f matrix3f = new Matrix3f();
 			matrix3f.set(matrix);
 			Spatial node = models.get(name.toLowerCase().intern());

AL-Game/src/com/aionemu/gameserver/geoEngine/models/GeoMap.java

@@ -17,6 +17,7 @@
 package com.aionemu.gameserver.geoEngine.models;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
@@ -317,10 +318,18 @@ private Vector3f terraionCollision(float x, float y, Ray ray) {
 		else {
 			int size = (int) Math.sqrt(terrainData.length);
 			try {
-				p1 = terrainData[(yInt + (xInt * size))] / 32f;
-				p2 = terrainData[((yInt + 1) + (xInt * size))] / 32f;
-				p3 = terrainData[((yInt) + ((xInt + 1) * size))] / 32f;
-				p4 = terrainData[((yInt + 1) + ((xInt + 1) * size))] / 32f;
+				int index = yInt + (xInt * size);
+				p1 = terrainData[index] / 32f;
+				p2 = terrainData[index + 1] / 32f;
+				p3 = terrainData[index + size] / 32f;
+				p4 = terrainData[index + size+ 1] / 32f;
+
+				// check if the terrain quad is removed.
+				if (terrainCutoutData != null) {
+					if (Arrays.binarySearch(terrainCutoutData, index) >= 0) {
+					//return false;
+					}
+				}
 			}
 			catch (Exception e) {
 				return null;
@@ -392,4 +401,11 @@ public void updateModelBound() {
 		}
 		super.updateModelBound();
 	}
+
+	private int[] terrainCutoutData;
+		public void setTerrainCutouts(int[] cutoutData) {
+			int[] arr = cutoutData.clone();
+			Arrays.sort(arr);
+			this.terrainCutoutData = arr;
+		}
 }