45 lines
1.1 KiB
Go
45 lines
1.1 KiB
Go
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package ai
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import (
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"math/rand"
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"nl-game-api-gin/internal/gamecore/xiangqi"
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)
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// ruleChessAI 本地规则象棋 AI：极大极小搜索，深度随难度提升
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type ruleChessAI struct {
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difficulty string // 难度：easy=1层+随机扰动 medium=2层 hard=3层
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name string // 显示名
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}
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// Name AI 显示名
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func (a *ruleChessAI) Name() string { return a.name }
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// searchDepth 难度对应的搜索深度
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func (a *ruleChessAI) searchDepth() int {
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switch a.difficulty {
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case DiffEasy:
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return 1
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case DiffHard:
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return 3
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default:
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return 2
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}
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}
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// DecideMove 走子：搜索最优着法；简单难度 40% 概率走随机合法着法（模拟新手失误）
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func (a *ruleChessAI) DecideMove(b *xiangqi.Board, side int) (xiangqi.Move, string) {
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if a.difficulty == DiffEasy && rand.Float64() < 0.4 {
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if m, ok := b.RandomMove(side); ok {
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return m, ""
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}
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}
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move, score := b.BestMove(side, a.searchDepth())
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say := ""
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// 分数大幅领先时补一句台词增加氛围
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if score > 800 {
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say = "这步棋你可要小心了。"
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}
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return move, say
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}
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