54 lines
1.8 KiB
GDScript
54 lines
1.8 KiB
GDScript
# src/ai/l1_basic_ai.gd
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class_name L1BasicAI
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extends BaseAI
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const _C = preload("res://src/core/constants.gd")
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func _init():
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ai_name = "Basic AI"
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func decide(hand: Array, table: Array, current_rank: int, config: RuleConfig) -> HandEvaluator.EvaluatedPlay:
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var moves := MoveGenerator.generate(hand, current_rank, config)
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var last_play := _last_non_pass(table)
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if last_play == null:
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return _smallest_play(moves)
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var candidates: Array = []
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for m in moves:
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if m.type == -1:
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continue
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if m.type == last_play.type and m.primary_rank > last_play.primary_rank:
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candidates.append(m)
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elif (m.type == _C.TYPE_BOMB or m.type == _C.TYPE_ROCKET) and _beats(m, last_play, config):
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candidates.append(m)
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if candidates.is_empty():
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return _pass_move()
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return _smallest_play(candidates)
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func _smallest_play(moves: Array) -> HandEvaluator.EvaluatedPlay:
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var best: HandEvaluator.EvaluatedPlay = null
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for m in moves:
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if m.type <= 0:
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continue
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if best == null or m.cards.size() < best.cards.size():
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best = m
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elif m.cards.size() == best.cards.size() and m.primary_rank < best.primary_rank:
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best = m
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if best == null:
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return _pass_move()
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return best
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func _last_non_pass(table: Array) -> HandEvaluator.EvaluatedPlay:
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for i in range(table.size() - 1, -1, -1):
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if table[i].type != -1:
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return table[i]
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return null
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func _beats(a: HandEvaluator.EvaluatedPlay, b: HandEvaluator.EvaluatedPlay, config: RuleConfig) -> bool:
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return RuleEngine.compare(a, b, config) > 0
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func _pass_move() -> HandEvaluator.EvaluatedPlay:
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var p := HandEvaluator.EvaluatedPlay.new()
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p.type = -1
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p.primary_rank = 0
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return p
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