Method: toString()

1: /*
2: * Copyright © 2021-2023 Fachhochschule für die Wirtschaft (FHDW) Hannover
3: *
4: * This file is part of ipspiel24-GD.
5: *
6: * ipspiel24-GD is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
7: * License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later
8: * version.
9: *
10: * ipspiel24-GD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
11: * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
12: *
13: * You should have received a copy of the GNU General Public License along with ipspiel24-GD. If not, see
14: * <http://www.gnu.org/licenses/>.
15: */
16: package de.fhdw.gaming.GefangenenDilemma.strategy.stratsWithBrain;
17:
18: import java.util.List;
19: import java.util.Map.Entry;
20: import java.util.Optional;
21:
22: import de.fhdw.gaming.GefangenenDilemma.domain.GDPlayer;
23: import de.fhdw.gaming.GefangenenDilemma.domain.GDState;
24: import de.fhdw.gaming.GefangenenDilemma.domain.GDStrategy;
25: import de.fhdw.gaming.GefangenenDilemma.moves.GDMove;
26: import de.fhdw.gaming.GefangenenDilemma.moves.factory.GDMoveFactory;
27: import de.fhdw.gaming.GefangenenDilemma.moves.impl.GDSnitchMove;
28: import de.fhdw.gaming.core.domain.Move;
29: import de.fhdw.gaming.memory.Key;
30: import de.fhdw.gaming.memory.impl.MemoryBrainImpl;
31: import de.fhdw.gaming.memory.impl.MemoryKeyImpl;
32: import de.fhdw.gaming.memory.impl.MemorySaveEntryImpl;
33:
34: /**
35: * Implements {@link GDStrategy} using the Grim Trigger strategy.
36: * Starts by cooperating and continues to cooperate unless the opponent defects.
37: * One defection leads to permanent defection.
38: */
39: public final class GDGrimTriggerStrategy implements GDStrategy {
40:
41: /**
42: * The factory for creating Gefangenen-Dilemma moves.
43: */
44: private final GDMoveFactory moveFactory;
45:
46: /**
47: * Creates an {@link GDGrimTriggerStrategy}.
48: *
49: * @param moveFactory The factory for creating Gefangenen-Dilemma moves.
50: */
51: GDGrimTriggerStrategy(final GDMoveFactory moveFactory) {
52: this.moveFactory = moveFactory;
53: }
54:
55: @Override
56: public Optional<GDMove> computeNextMove(
57: final int gameId,
58: final GDPlayer player,
59: final GDState state,
60: final long maxComputationTimePerMove) {
61:
62: GDPlayer opponent = null;
63: for (Entry<String, GDPlayer> entry : state.getPlayers().entrySet()) {
64: if (!entry.getValue().equals(player)) {
65: opponent = entry.getValue();
66: }
67: }
68:
69: final Key key = new MemoryKeyImpl(player, opponent, this);
70:
71: List<MemorySaveEntryImpl> check = null;
72: if (MemoryBrainImpl.getInstance().getMemory(key) != null) {
73: check = MemoryBrainImpl.getInstance().getMemory(key).show();
74: }
75:
76: if (check == null || check.isEmpty()) {
77: return Optional.of(this.moveFactory.createRemainSilentMove());
78: }
79:
80: for (MemorySaveEntryImpl memoryPair : check) {
81: final Move<?, ?> lastMoveUsed = memoryPair.getOpponentMove();
82: if (lastMoveUsed.getClass().equals(GDSnitchMove.class)) {
83: return Optional.of(this.moveFactory.createSnitchMove());
84: }
85: }
86:
87: return Optional.of(this.moveFactory.createRemainSilentMove());
88: }
89:
90: @Override
91: public String toString() {
92: return GDGrimTriggerStrategy.class.getSimpleName();
93: }
94: }