ported from perforce

RobotAndDonkey.Game/Modifiers/UnreliableModifier.cs

@@ -0,0 +1,49 @@
+using RobotAndDonkey.Game.Board;
+using RobotAndDonkey.Game.Cards;
+using RobotAndDonkey.Game.Data;
+using RobotAndDonkey.Game.Execution;
+using RobotAndDonkey.Game.Execution.Results;
+using RobotAndDonkey.Game.GameState;
+using RobotAndDonkey.Game.Intents;
+
+namespace RobotAndDonkey.Game.Modifiers;
+
+
+public record UnreliableCardModifier(EModifierDuration Duration) : UnreliableModifierBase(EModifierKind.Card, Duration)
+{
+    protected override UnreliableCardModifier CreateInstance() => new(Duration);
+
+    public override string ToolTip => $"Has a {Balancing.Instance.UnreliableChance * 100:N0}% chance of doing nothing";
+}
+
+public record UnreliableCellModifier(EModifierDuration Duration) : UnreliableModifierBase(EModifierKind.Cell, Duration)
+{
+    protected override UnreliableCellModifier CreateInstance() => new(Duration);
+
+    public override string ToolTip => $"While in this area, instructions have a {Balancing.Instance.UnreliableChance * 100:N0}% chance of doing nothing";
+}
+
+public abstract record UnreliableModifierBase(EModifierKind Kind, EModifierDuration Duration) : Modifier(Kind, EModifierId.Unreliable, Duration)
+{
+    public override void Before(Guid requestId, ReadOnlySpan<Intent> intents, CoreLoop coreLoop, Entity owner, List<Intent> newIntents, List<Result> results)
+    {
+        if (coreLoop.RunPhase != ERunPhase.ExecuteProgram)
+            return;
+
+        if (coreLoop.Random.NextSingle() <= Balancing.Instance.UnreliableChance)
+        {
+            if (owner is Card card)
+                results.Add(new ModifyCardResult(requestId, card.DeepClone(), EModifierId.Unreliable, ECardLocation.Tape));
+            if (owner is Cell cell)
+                results.Add(new ModifyCellResult(requestId, new(coreLoop.Board), EModifierId.Unreliable, cell.Hex));
+            foreach (var intent in intents)
+                intent.DebuffSources.Add(this);
+        }
+    }
+
+    public override void After(Guid requestId, ReadOnlySpan<Intent> intents, CoreLoop coreLoop, Entity owner, List<Intent> newIntents, List<Result> results)
+    {
+        foreach (var intent in intents)
+            intent.DebuffSources.Remove(this);
+    }
+}