Method: setPlayerStrategyHook(Consumer)

1: package de.fhdw.gaming.ipspiel23.c4.domain.impl;
2:
3: import java.util.Optional;
4: import java.util.function.Consumer;
5:
6: import de.fhdw.gaming.core.domain.GameException;
7: import de.fhdw.gaming.ipspiel23.c4.domain.IC4Player;
8: import de.fhdw.gaming.ipspiel23.c4.domain.IC4PlayerBuilder;
9: import de.fhdw.gaming.ipspiel23.c4.strategies.IC4Strategy;
10:
11: /**
12: * The default implementation of {@link IC4PlayerBuilder}.
13: */
14: final class C4PlayerBuilder implements IC4PlayerBuilder {
15:
16: /**
17: * The token that uniquely identifies the player.
18: */
19: private final int token;
20:
21: /**
22: * The name of the player.
23: */
24: private Optional<String> name;
25:
26: /**
27: * The hook that is used to inject the strategy into the player object when the player is added to the game.
28: */
29: private Consumer<IC4Strategy> playerStrategyHook;
30:
31: /**
32: * Creates a new instance of {@link C4PlayerBuilder}.
33: *
34: * @param id The token that uniquely identifies the player.
35: */
36: C4PlayerBuilder(final int id) {
37: this.token = id;
38: this.name = Optional.empty();
39: }
40:
41: /**
42: * Sets the hook that is used to inject the strategy into the player object when the player is added to the game.
43: *
44: * @param value The hook that is used to inject the strategy into the player object when the player is
45: * added to the game.
46: */
47: void setPlayerStrategyHook(final Consumer<IC4Strategy> value) {
48: this.playerStrategyHook = value;
49: }
50:
51: /**
52: * Injects the strategy into the player object.
53: *
54: * @param strategy The strategy that is injected into the player object.
55: */
56: void injectPlayerStrategyUsingHook(final IC4Strategy strategy) {
57: if (playerStrategyHook == null) {
58: throw new IllegalStateException("Attempted to inject strategy into player object before "
59: + "hook was configured!");
60: }
61: // we don't want to expose the strategy setter to anyone, so it's done via this
62: // hook kindly provided to us by the C4Player constructor.
63: playerStrategyHook.accept(strategy);
64: }
65:
66: @Override
67: public IC4PlayerBuilder changeName(final String newName) {
68: this.name = Optional.of(newName);
69: return this;
70: }
71:
72: @Override
73: public IC4Player build() throws GameException {
74: return new C4Player(this, this.token, this.name.orElseThrow());
75: }
76:
77: @Override
78: public int getToken() {
79: return this.token;
80: }
81: }