Fix biome rendering

src/main/java/org/dynmap/MapTile.java

@@ -46,9 +46,9 @@ public abstract class MapTile {
     
     public abstract String getKey();
     
-    public boolean isBiomeDataNeeded() { return false; }
+    public abstract boolean isBiomeDataNeeded();
-    public boolean isHightestBlockYDataNeeded() { return false; }
+    public abstract boolean isHightestBlockYDataNeeded();
-    public boolean isRawBiomeDataNeeded() { return false; }
+    public abstract boolean isRawBiomeDataNeeded();
-    public boolean isBlockTypeDataNeeded() { return true; }
+    public abstract boolean isBlockTypeDataNeeded();
 
 }

src/main/java/org/dynmap/flat/FlatMap.java

@@ -498,7 +498,9 @@ public class FlatMap extends MapType {
         }
         
         public boolean isHightestBlockYDataNeeded() { return true; }
-
+        public boolean isBiomeDataNeeded() { return false; }
+        public boolean isRawBiomeDataNeeded() { return false; }
+        public boolean isBlockTypeDataNeeded() { return true; }
     }
     
     @Override

src/main/java/org/dynmap/hdmap/IsoHDPerspective.java

@@ -330,9 +330,13 @@ public class IsoHDPerspective implements HDPerspective {
             }
             double mtend = Math.min(t_next_x, Math.min(t_next_y, t_next_z));
             while(mt < mtend) {
-                if(model[modscale*modscale*my + modscale*mz + mx] > 0) {
+            	try {
-                    return false;
+            		if(model[modscale*modscale*my + modscale*mz + mx] > 0) {
-                }
+            			return false;
+            		}
+            	} catch (ArrayIndexOutOfBoundsException aioobx) {	/* We're outside the model, so miss */
+            		return true;
+            	}
                 /* If X step is next best */
                 if((mt_next_x <= mt_next_y) && (mt_next_x <= mt_next_z)) {
                     mx += x_inc;

src/main/java/org/dynmap/kzedmap/KzedMapTile.java

@@ -86,4 +86,10 @@ public class KzedMapTile extends MapTile {
     public MapTile[] getAdjecentTiles() {
         return map.getAdjecentTiles(this);
     }
+    
+    public boolean isBiomeDataNeeded() { return map.isBiomeDataNeeded(); }
+    public boolean isHightestBlockYDataNeeded() { return false; }
+    public boolean isRawBiomeDataNeeded() { return map.isRawBiomeDataNeeded(); }
+    public boolean isBlockTypeDataNeeded() { return true; }
+
 }

src/main/java/org/dynmap/kzedmap/KzedZoomedMapTile.java

@@ -98,4 +98,9 @@ public class KzedZoomedMapTile extends MapTile {
         return null;
     }
 
+    public boolean isBiomeDataNeeded() { return originalTile.isBiomeDataNeeded(); }
+    public boolean isHightestBlockYDataNeeded() { return false; }
+    public boolean isRawBiomeDataNeeded() { return originalTile.isRawBiomeDataNeeded(); }
+    public boolean isBlockTypeDataNeeded() { return true; }
+    
 }