feat(enemy): ApproachAttackEngagement——攻击改为起手即打完，不中途收招

寻路逼近↔到射程选招攻击的交战模块。招式射程/冷却/权重归 EnemyAttackSelector，本模块只决定何时逼近、何时出手。有意的行为变更：Attack 态去掉 leftAllZones 边，玩家在前摇中跑出感知区不再中途打断招式，招式完整打完后经 Approach 自然脱战。
2026-07-29 12:53:49 +08:00
parent 5771ac414e
commit a700bef352
4 changed files with 153 additions and 0 deletions
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+using NUnit.Framework;
+using BaseGames.AI;
+using BaseGames.Enemies;
+
+namespace BaseGames.Tests.EditMode.AI
+{
+    public class ApproachAttackEngagementTests
+    {
+        const string Rest = "Rest";
+
+        static AiRuntime RunAlone(FakeAiContext ctx)
+        {
+            var m = new ApproachAttackEngagement();
+            var b = new BrainBuilder();
+            AiStateFragments.Locomotion(b, Rest, LocomotionMode.Patrol);
+            m.Build(b, Rest);
+            b.Entry(m.EntryState);
+            return new AiRuntime(b.Build(), ctx);
+        }
+
+        [Test]
+        public void Approach_PursuesLastKnown()
+        {
+            var ctx = new FakeAiContext();
+            ctx.S.Chase = true;
+            ctx.S.Last = new UnityEngine.Vector2(5f, 1f);
+            RunAlone(ctx);
+            Assert.AreEqual(new UnityEngine.Vector2(5f, 1f), ctx.L.PursuedTo);
+        }
+
+        [Test]
+        public void Approach_ToAttack_WhenEligibleAttackExists()
+        {
+            var ctx = new FakeAiContext();
+            ctx.S.Chase = true;
+            var rt = RunAlone(ctx);
+            Assert.AreEqual(ApproachAttackEngagement.Approach, rt.CurrentStateName);
+            ctx.C.Eligible = true;
+            rt.Tick(0.1f);
+            Assert.AreEqual(ApproachAttackEngagement.Attack, rt.CurrentStateName);
+            CollectionAssert.Contains(ctx.C.Used, "best");
+        }
+
+        [Test]
+        public void Attack_BackToApproach_WhenAbilityDone()
+        {
+            var ctx = new FakeAiContext();
+            ctx.S.Chase = true; ctx.C.Eligible = true;
+            var rt = RunAlone(ctx);
+            rt.Tick(0.1f);
+            Assert.AreEqual(ApproachAttackEngagement.Attack, rt.CurrentStateName);
+            ctx.C.Running = null;                 // 招式打完
+            rt.Tick(0.1f);
+            Assert.AreEqual(ApproachAttackEngagement.Approach, rt.CurrentStateName);
+        }
+
+        [Test]
+        public void Approach_ExitsToRest_WhenAllZonesLost()
+        {
+            var ctx = new FakeAiContext();
+            ctx.S.Chase = true;
+            var rt = RunAlone(ctx);
+            ctx.S.Chase = false; ctx.S.Vision = false;
+            rt.Tick(0.1f);
+            Assert.AreEqual(Rest, rt.CurrentStateName);
+        }
+
+        // 有意的行为变更：攻击起手后打完，不中途收招
+        [Test]
+        public void Attack_CompletesEvenWhenPlayerLeavesAllZones()
+        {
+            var ctx = new FakeAiContext();
+            ctx.S.Chase = true; ctx.C.Eligible = true;
+            var rt = RunAlone(ctx);
+            rt.Tick(0.1f);
+            Assert.AreEqual(ApproachAttackEngagement.Attack, rt.CurrentStateName);
+
+            ctx.S.Chase = false; ctx.S.Vision = false;   // 前摇中玩家跑掉
+            rt.Tick(0.1f);
+            Assert.AreEqual(ApproachAttackEngagement.Attack, rt.CurrentStateName); // 不中途收招
+
+            ctx.C.Running = null;                         // 招式打完
+            rt.Tick(0.1f);
+            Assert.AreEqual(ApproachAttackEngagement.Approach, rt.CurrentStateName);
+            rt.Tick(0.1f);
+            Assert.AreEqual(Rest, rt.CurrentStateName);   // 再经 Approach 自然脱战
+        }
+    }
+}
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