AI开挖策略修复

assets/script/battle/ai/decision/AiShovelPlanner.ts

@@ -44,7 +44,13 @@ export class AiShovelPlanner {
     private _pickDig(ctx: AiPlannerContext, digs: MapGrid[]): MapGrid | null {
         const policy = ctx.personality.shovelPolicy;
         if (policy === AiShovelPolicyType.Type1) {
+            // 用「剩余可铲集合」作盐，避免整局死盯 digs[固定下标]
             let x = (Math.floor(Number(ctx.profile.seed) || 0) >>> 0) || 1;
+            let salt = digs.length >>> 0;
+            for (let i = 0; i < digs.length; i++) {
+                salt = (salt * 131 + ((digs[i].Index | 0) + 1)) >>> 0;
+            }
+            x ^= salt;
             x ^= x << 13;
             x ^= x >>> 17;
             x ^= x << 5;