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diff --git a/engines/scumm/he/moonbase/ai_node.h b/engines/scumm/he/moonbase/ai_node.h
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+++ b/engines/scumm/he/moonbase/ai_node.h
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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef SCUMM_HE_MOONBASE_AI_NODE_H
+#define SCUMM_HE_MOONBASE_AI_NODE_H
+
+#include "common/list.h"
+
+namespace Scumm {
+
+const float SUCCESS = -1;
+const float FAILURE = 1e20;
+
+class IContainedObject {
+private:
+	int objID;
+	float valueG;
+
+protected:
+	virtual float getG() const { return valueG; }
+	virtual float calcH() { return 0; }
+
+
+public:
+	IContainedObject() { valueG = 0; }
+	IContainedObject(float inG) { valueG = inG; }
+	IContainedObject(IContainedObject &sourceContainedObject);
+	virtual ~IContainedObject() {}
+
+	virtual IContainedObject *duplicate() = 0;
+
+	void setValueG(float inG) { valueG = inG; }
+	float getValueG() { return valueG; }
+
+	int getObjID() const { return objID; }
+	void setObjID(int inputObjID) { objID = inputObjID; }
+
+	virtual int numChildrenToGen() = 0;
+	virtual IContainedObject *createChildObj(int index, int &completionFlag) = 0;
+
+	virtual int checkSuccess() = 0;
+	virtual float calcT() { return getG(); }
+
+	float returnG() const { return getG(); }
+};
+
+class Node {
+private:
+	Node *pParent;
+	Common::List<Node *> vpChildren;
+
+	int m_depth;
+	static int m_nodeCount;
+
+	IContainedObject *pContents;
+
+public:
+	Node();
+	Node(Node *sourceNode);
+	~Node();
+
+	void setParent(Node *parentPtr) { pParent = parentPtr; }
+	Node *getParent() const { return pParent; }
+
+	void setDepth(int depth) { m_depth = depth; }
+	int getDepth() const { return m_depth; }
+
+	static int getNodeCount() { return m_nodeCount; }
+
+	void setContainedObject(IContainedObject *pValue) { pContents = pValue; }
+	IContainedObject *getContainedObject() { return pContents; }
+
+	Common::List<Node *> getChildren() const { return vpChildren; }
+	int generateChildren();
+	int generateNextChild();
+	Node *popChild();
+
+	float getObjectT() { return pContents->calcT(); }
+
+	Node *getFirstStep();
+
+	void printPath();
+};
+
+} // End of namespace Scumm
+
+#endif