Method: VierConnectsMoveGeneratorImpl()

1: /*
2: * Copyright © 2021-2023 Fachhochschule für die Wirtschaft (FHDW) Hannover
3: *
4: * This file is part of ipspiel24-demo.
5: *
6: * Ipspiel24-demo 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-demo 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-demo. If not, see
14: * <http://www.gnu.org/licenses/>.
15: */
16: package de.fhdw.gaming.ipspiel24.VierConnects.core.domain.impl;
17:
18: import java.util.ArrayList;
19: import java.util.List;
20: import java.util.Optional;
21: import java.util.Random;
22:
23: import de.fhdw.gaming.ipspiel24.VierConnects.core.domain.VierConnectsField;
24: import de.fhdw.gaming.ipspiel24.VierConnects.core.domain.VierConnectsFieldState;
25: import de.fhdw.gaming.ipspiel24.VierConnects.core.domain.VierConnectsMoveGenerator;
26: import de.fhdw.gaming.ipspiel24.VierConnects.core.domain.VierConnectsPlayer;
27: import de.fhdw.gaming.ipspiel24.VierConnects.core.domain.VierConnectsState;
28: import de.fhdw.gaming.ipspiel24.VierConnects.core.moves.VierConnectsMove;
29: import de.fhdw.gaming.ipspiel24.VierConnects.core.moves.factory.VierConnectsMoveFactory;
30: import de.fhdw.gaming.ipspiel24.VierConnects.core.moves.impl.VierConnectsDefaultMoveFactory;
31:
32: /**
33: * Implements the {@link VierConnectsMoveGenerator} interface.
34: */
35: final class VierConnectsMoveGeneratorImpl implements VierConnectsMoveGenerator {
36:
37: /**
38: * The random number generator.
39: */
40: private static final Random RANDOM = new Random();
41:
42: /**
43: * The move factory.
44: */
45: private final VierConnectsMoveFactory moveFactory = new VierConnectsDefaultMoveFactory();
46:
47: @Override
48: public Optional<VierConnectsMove> generate(final VierConnectsPlayer player, final VierConnectsState state) {
49: final List<VierConnectsField> fields = new ArrayList<>(
50: state.getBoard().getFieldsBeing(VierConnectsFieldState.EMPTY).values());
51:
52: if (fields.isEmpty()) {
53: return Optional.empty();
54: }
55: final int index = RANDOM.nextInt(fields.size());
56: final VierConnectsField field = fields.get(index);
57: return Optional
58: .of(this.moveFactory.createPlaceMarkMove(player.isUsingCrosses(), field.getPosition().getColumn()));
59: }
60: }