feat(mosstank): add VTank-style automation PoC

tests/AcDream.Plugins.MossTank.Tests/CombatFailureTrackerTests.cs

@@ -0,0 +1,106 @@
+using AcDream.Plugin.Abstractions;
+
+namespace AcDream.Plugins.MossTank.Tests;
+
+public sealed class CombatFailureTrackerTests
+{
+    [Fact]
+    public void HealthUpdateCancelsAccumulatedSuccessfulMisses()
+    {
+        var tracker = new CombatFailureTracker();
+        var settings = new CombatSettings
+        {
+            BlacklistMonsterAttemptCount = 2,
+            BlacklistMonsterTimeoutSeconds = 30,
+        };
+        tracker.ObserveTargets([Target(1)], 0, settings);
+        tracker.BeginAttack(10, 1);
+        tracker.RecordSuccessfulAttack(10, 1, settings);
+
+        tracker.ObserveTargets([Target(2)], 2, settings);
+        tracker.BeginAttack(10, 2);
+        tracker.RecordSuccessfulAttack(10, 3, settings);
+
+        Assert.Equal(
+            CombatSuppressionReason.None,
+            tracker.Reason(10, 3));
+    }
+
+    [Fact]
+    public void RepeatedSuccessfulMissesBlacklistUntilTimeout()
+    {
+        var tracker = new CombatFailureTracker();
+        var settings = new CombatSettings
+        {
+            BlacklistMonsterAttemptCount = 2,
+            BlacklistMonsterTimeoutSeconds = 20,
+        };
+        tracker.ObserveTargets([Target(1)], 0, settings);
+        tracker.BeginAttack(10, 1);
+        tracker.RecordSuccessfulAttack(10, 1, settings);
+        tracker.BeginAttack(10, 1);
+        tracker.RecordSuccessfulAttack(10, 2, settings);
+
+        Assert.Equal(
+            CombatSuppressionReason.Blacklisted,
+            tracker.Reason(10, 10));
+
+        tracker.ObserveTargets([Target(1)], 23, settings);
+        Assert.Equal(
+            CombatSuppressionReason.None,
+            tracker.Reason(10, 23));
+    }
+
+    [Fact]
+    public void FailedSpellStartsMarkPersistentGhost()
+    {
+        var tracker = new CombatFailureTracker();
+        var settings = new CombatSettings
+        {
+            DeleteGhostMonsters = true,
+            GhostMonsterSpellAttemptCount = 2,
+        };
+        tracker.ObserveTargets([Target(0)], 0, settings);
+
+        tracker.RecordSpellDidNotStart(10, settings);
+        Assert.Equal(CombatSuppressionReason.None, tracker.Reason(10, 0));
+        tracker.RecordSpellDidNotStart(10, settings);
+        Assert.Equal(CombatSuppressionReason.Ghost, tracker.Reason(10, 100));
+    }
+
+    [Fact]
+    public void HealthAgeDetectorRequiresEngagementAndConfiguredDelay()
+    {
+        var tracker = new CombatFailureTracker();
+        var settings = new CombatSettings
+        {
+            DeleteGhostMonstersByHealthTracker = true,
+            GhostDeleteHealthTrackerSeconds = 10,
+        };
+        PluginCombatTarget stale = Target(1) with
+        {
+            SecondsSinceHealthUpdate = 50,
+        };
+
+        tracker.ObserveTargets([stale], 0, settings);
+        Assert.Equal(CombatSuppressionReason.None, tracker.Reason(10, 0));
+        tracker.BeginEngagement(10, 0);
+        tracker.ObserveTargets([stale], 9.9, settings);
+        Assert.Equal(CombatSuppressionReason.None, tracker.Reason(10, 9.9));
+        tracker.ObserveTargets([stale], 10, settings);
+        Assert.Equal(CombatSuppressionReason.Ghost, tracker.Reason(10, 10));
+    }
+
+    private static PluginCombatTarget Target(long healthRevision) => new(
+        10,
+        "Drudge",
+        100,
+        5,
+        0,
+        true,
+        1f)
+    {
+        HealthRevision = healthRevision,
+        SecondsSinceHealthUpdate = 0,
+    };
+}