ai_tree.h

/* 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef SCUMM_HE_MOONBASE_AI_TREE_H
#define SCUMM_HE_MOONBASE_AI_TREE_H

#include "common/array.h"
#include "scumm/he/moonbase/ai_node.h"

namespace Scumm {

const int MAX_DEPTH = 100;
const int MAX_NODES = 1000000;

class AI;

struct TreeNode {
    float value;
    Node *node;

    TreeNode(float v, Node *n) { value = v; node = n; }
};

class Tree {
private:
    Node *pBaseNode;

    int _maxDepth;
    int _maxNodes;

    int _currentChildIndex;

    Common::SortedArray<TreeNode *> *_currentMap;
    Node *_currentNode;

    AI *_ai;

public:
    Tree(AI *ai);
    Tree(IContainedObject *contents, AI *ai);
    Tree(IContainedObject *contents, int maxDepth, AI *ai);
    Tree(IContainedObject *contents, int maxDepth, int maxNodes, AI *ai);
    Tree(const Tree *sourceTree, AI *ai);
    ~Tree();

    void duplicateTree(Node *sourceNode, Node *destNode);

    Node *getBaseNode() const { return pBaseNode; }
    void setMaxDepth(int maxDepth) { _maxDepth = maxDepth; }
    int getMaxDepth() const { return _maxDepth; }

    void setMaxNodes(int maxNodes) { _maxNodes = maxNodes; }
    int getMaxNodes() const { return _maxNodes; }

    Node *aStarSearch();

    Node *aStarSearch_singlePassInit();
    Node *aStarSearch_singlePass();

    int IsBaseNode(Node *thisNode);
};

} // End of namespace Scumm

#endif