Move some Warheads to Mods.Common

OpenRA.Mods.Common/Warheads/HealthPercentageDamageWarhead.cs

@@ -0,0 +1,48 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
+ * 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. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using OpenRA.Effects;
+using OpenRA.GameRules;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common
+{
+	public class HealthPercentageDamageWarhead : DamageWarhead
+	{
+		[Desc("Size of the area. Damage will be applied to this area.", "If two spreads are defined, the area of effect is a ring, where the second value is the inner radius.")]
+		public readonly WRange[] Spread = { new WRange(43) };
+
+		public override void DoImpact(WPos pos, Actor firedBy, IEnumerable<int> damageModifiers)
+		{
+			var world = firedBy.World;
+			var range = Spread[0];
+			var hitActors = world.FindActorsInCircle(pos, range);
+			if (Spread.Length > 1 && Spread[1].Range > 0)
+				hitActors = hitActors.Except(world.FindActorsInCircle(pos, Spread[1]));
+
+			foreach (var victim in hitActors)
+				DoImpact(victim, firedBy, damageModifiers);
+		}
+
+		public override void DoImpact(Actor victim, Actor firedBy, IEnumerable<int> damageModifiers)
+		{
+			var healthInfo = victim.Info.Traits.GetOrDefault<HealthInfo>();
+			if (healthInfo == null)
+				return;
+
+			// Damage is measured as a percentage of the target health
+			var damage = Util.ApplyPercentageModifiers(healthInfo.HP, damageModifiers.Append(Damage, DamageVersus(victim.Info)));
+			victim.InflictDamage(firedBy, damage, this);
+		}
+	}
+}