cache: add blocking mask to object definition

cache/src/main/java/net/runelite/cache/definitions/ObjectDefinition.java

@@ -55,6 +55,7 @@ public class ObjectDefinition
 	private String[] actions = new String[5];
 	private int interactType = 2;
 	private int mapSceneID = -1;
+	private int blockingMask = 0;
 	private short[] recolorToReplace;
 	private boolean shadow = true;
 	private int modelSizeX = 128;

cache/src/main/java/net/runelite/cache/definitions/loaders/ObjectLoader.java

@@ -220,7 +220,7 @@ public class ObjectLoader
 		}
 		else if (opcode == 69)
 		{
-			is.readByte();
+			def.setBlockingMask(is.readByte());
 		}
 		else if (opcode == 70)
 		{

cache/src/main/java/net/runelite/cache/definitions/savers/ObjectSaver.java

@@ -146,6 +146,11 @@ public class ObjectSaver
 			out.writeByte(68);
 			out.writeShort(obj.getMapSceneID());
 		}
+		if (obj.getBlockingMask() != 0)
+		{
+			out.writeByte(69);
+			out.writeByte(obj.getBlockingMask());
+		}
 		out.writeByte(70);
 		out.writeShort(obj.getOffsetX());
 		out.writeByte(71);