added control of wether an AI can be loaded from NBT

api/buildcraft/api/boards/RedstoneBoardRobot.java

@@ -25,4 +25,9 @@ public abstract class RedstoneBoardRobot extends AIRobot implements IRedstoneBoa
 
 	}
 
+	@Override
+	public boolean canLoadFromNBT() {
+		return true;
+	}
+
 }

api/buildcraft/api/robots/AIRobot.java

@@ -64,6 +64,10 @@ public class AIRobot {
 		return 0.1;
 	}
 
+	public boolean canLoadFromNBT() {
+		return false;
+	}
+
 	/**
 	 * Tries to receive items in parameters, return items that are left after
 	 * the operation.
@@ -150,7 +154,7 @@ public class AIRobot {
 		writeSelfToNBT(data);
 		nbt.setTag("data", data);
 
-		if (delegateAI != null) {
+		if (delegateAI != null && delegateAI.canLoadFromNBT()) {
 			NBTTagCompound sub = new NBTTagCompound();
 
 			delegateAI.writeToNBT(sub);
@@ -167,8 +171,11 @@ public class AIRobot {
 			try {
 				delegateAI = (AIRobot) Class.forName(sub.getString("class")).getConstructor(EntityRobotBase.class)
 						.newInstance(robot);
-				delegateAI.parentAI = this;
+
-				delegateAI.loadFromNBT(sub);
+				if (delegateAI.canLoadFromNBT()) {
+					delegateAI.parentAI = this;
+					delegateAI.loadFromNBT(sub);
+				}
 			} catch (Throwable e) {
 				e.printStackTrace();
 			}

common/buildcraft/core/robots/AIRobotGotoBlock.java

@@ -133,6 +133,11 @@ public class AIRobotGotoBlock extends AIRobotGoto {
 		}
 	}
 
+	@Override
+	public boolean canLoadFromNBT() {
+		return true;
+	}
+
 	@Override
 	public void writeSelfToNBT(NBTTagCompound nbt) {
 		super.writeSelfToNBT(nbt);

common/buildcraft/core/robots/AIRobotGotoSleep.java

@@ -31,4 +31,9 @@ public class AIRobotGotoSleep extends AIRobot {
 			terminate();
 		}
 	}
+
+	@Override
+	public boolean canLoadFromNBT() {
+		return true;
+	}
 }

common/buildcraft/core/robots/AIRobotGotoStation.java

@@ -79,6 +79,11 @@ public class AIRobotGotoStation extends AIRobot {
 		return docked;
 	}
 
+	@Override
+	public boolean canLoadFromNBT() {
+		return true;
+	}
+
 	@Override
 	public void writeSelfToNBT(NBTTagCompound nbt) {
 		NBTTagCompound indexNBT = new NBTTagCompound();

common/buildcraft/core/robots/AIRobotMain.java

@@ -55,4 +55,9 @@ public class AIRobotMain extends AIRobot {
 	public AIRobot getOverridingAI() {
 		return overridingAI;
 	}
+
+	@Override
+	public boolean canLoadFromNBT() {
+		return true;
+	}
 }