Initial commit: OpenRA game engine

Fork from OpenRA/OpenRA with one-click launch script (start-ra.cmd)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

OpenRA.Mods.Common/Traits/Infantry/ScaredyCat.cs

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+#region Copyright & License Information
+/*
+ * Copyright (c) The OpenRA Developers and Contributors
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System;
+using System.Collections.Frozen;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[Desc("Makes the unit automatically run around when taking damage.")]
+	sealed class ScaredyCatInfo : TraitInfo, Requires<MobileInfo>
+	{
+		[Desc("Chance (out of 100) the unit has to enter panic mode when attacked.")]
+		public readonly int PanicChance = 100;
+
+		[Desc("How long (in ticks) the actor should panic for.")]
+		public readonly int PanicDuration = 250;
+
+		[Desc("Panic movement speed as a percentage of the normal speed.")]
+		public readonly int PanicSpeedModifier = 200;
+
+		[Desc("Chance (out of 100) the unit has to enter panic mode when attacking.")]
+		public readonly int AttackPanicChance = 20;
+
+		[Desc("The terrain types that this actor should avoid running on to while panicking.")]
+		public readonly FrozenSet<string> AvoidTerrainTypes = FrozenSet<string>.Empty;
+
+		[SequenceReference(prefix: true)]
+		public readonly string PanicSequencePrefix = "panic-";
+
+		public override object Create(ActorInitializer init) { return new ScaredyCat(init.Self, this); }
+	}
+
+	sealed class ScaredyCat : ITick, INotifyIdle, INotifyDamage, INotifyAttack, ISpeedModifier, ISync, IRenderInfantrySequenceModifier
+	{
+		readonly ScaredyCatInfo info;
+		readonly Mobile mobile;
+		readonly Actor self;
+		readonly Func<CPos, bool> avoidTerrainFilter;
+
+		[VerifySync]
+		int panicStartedTick;
+		bool Panicking => panicStartedTick > 0;
+
+		bool IRenderInfantrySequenceModifier.IsModifyingSequence => Panicking;
+		string IRenderInfantrySequenceModifier.SequencePrefix => info.PanicSequencePrefix;
+
+		public ScaredyCat(Actor self, ScaredyCatInfo info)
+		{
+			this.self = self;
+			this.info = info;
+			mobile = self.Trait<Mobile>();
+
+			if (info.AvoidTerrainTypes.Count > 0)
+				avoidTerrainFilter = c => info.AvoidTerrainTypes.Contains(self.World.Map.GetTerrainInfo(c).Type);
+		}
+
+		public void Panic()
+		{
+			if (!Panicking)
+				self.CancelActivity();
+
+			panicStartedTick = self.World.WorldTick;
+		}
+
+		void ITick.Tick(Actor self)
+		{
+			if (!Panicking)
+				return;
+
+			if (self.World.WorldTick >= panicStartedTick + info.PanicDuration)
+			{
+				self.CancelActivity();
+				panicStartedTick = 0;
+			}
+		}
+
+		void INotifyIdle.TickIdle(Actor self)
+		{
+			if (!Panicking)
+				return;
+
+			// Note: This is just a modified copy of Mobile.Nudge
+			var cell = mobile.GetAdjacentCell(self.Location, avoidTerrainFilter);
+			if (cell != null)
+				self.QueueActivity(false, mobile.MoveTo(cell.Value, 0));
+		}
+
+		void INotifyDamage.Damaged(Actor self, AttackInfo e)
+		{
+			if (e.Damage.Value > 0 && self.World.SharedRandom.Next(100) < info.PanicChance)
+				Panic();
+		}
+
+		void INotifyAttack.Attacking(Actor self, in Target target, Armament a, Barrel barrel)
+		{
+			if (self.World.SharedRandom.Next(100) < info.AttackPanicChance)
+				Panic();
+		}
+
+		void INotifyAttack.PreparingAttack(Actor self, in Target target, Armament a, Barrel barrel) { }
+
+		int ISpeedModifier.GetSpeedModifier()
+		{
+			return Panicking ? info.PanicSpeedModifier : 100;
+		}
+	}
+}