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SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
48 lines
1.2 KiB
C++
48 lines
1.2 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Function.h>
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#include <AK/NonnullOwnPtrVector.h>
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#include <LibChess/Chess.h>
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#include <math.h>
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class MCTSTree {
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public:
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enum EvalMethod {
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Simulation,
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Heuristic,
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};
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MCTSTree(const Chess::Board& board, double exploration_parameter = sqrt(2), MCTSTree* parent = nullptr);
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MCTSTree& select_leaf();
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MCTSTree& expand();
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int simulate_game() const;
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int heuristic() const;
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void apply_result(int game_score);
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void do_round();
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Chess::Move best_move() const;
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double expected_value() const;
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double uct(Chess::Color color) const;
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bool expanded() const;
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EvalMethod eval_method() const { return m_eval_method; }
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void set_eval_method(EvalMethod method) { m_eval_method = method; }
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private:
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NonnullOwnPtrVector<MCTSTree> m_children;
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MCTSTree* m_parent { nullptr };
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int m_white_points { 0 };
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int m_simulations { 0 };
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bool m_moves_generated { false };
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double m_exploration_parameter;
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EvalMethod m_eval_method { EvalMethod::Simulation };
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Chess::Board m_board;
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};
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