89 lines
2.9 KiB
C#
89 lines
2.9 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2020 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System.Collections.Generic;
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using System.Linq;
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using OpenRA.GameRules;
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using OpenRA.Mods.Common.Traits;
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using OpenRA.Primitives;
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using OpenRA.Traits;
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namespace OpenRA.Mods.Common.Warheads
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{
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public abstract class DamageWarhead : Warhead
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{
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[Desc("How much (raw) damage to deal.")]
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public readonly int Damage = 0;
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[Desc("Types of damage that this warhead causes. Leave empty for no damage types.")]
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public readonly BitSet<DamageType> DamageTypes = default(BitSet<DamageType>);
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[Desc("Damage percentage versus each armortype.")]
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public readonly Dictionary<string, int> Versus = new Dictionary<string, int>();
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public override bool IsValidAgainst(Actor victim, Actor firedBy)
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{
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// Cannot be damaged without a Health trait
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if (!victim.Info.HasTraitInfo<IHealthInfo>())
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return false;
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return base.IsValidAgainst(victim, firedBy);
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}
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public override void DoImpact(in Target target, WarheadArgs args)
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{
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var firedBy = args.SourceActor;
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// Used by traits or warheads that damage a single actor, rather than a position
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if (target.Type == TargetType.Actor)
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{
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var victim = target.Actor;
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if (!IsValidAgainst(victim, firedBy))
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return;
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var closestActiveShape = victim.TraitsImplementing<HitShape>().Where(Exts.IsTraitEnabled)
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.MinByOrDefault(t => t.DistanceFromEdge(victim, victim.CenterPosition));
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// Cannot be damaged without an active HitShape
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if (closestActiveShape == null)
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return;
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InflictDamage(victim, firedBy, closestActiveShape, args);
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}
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else if (target.Type != TargetType.Invalid)
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DoImpact(target.CenterPosition, firedBy, args);
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}
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protected virtual int DamageVersus(Actor victim, HitShape shape, WarheadArgs args)
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{
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// If no Versus values are defined, DamageVersus would return 100 anyway, so we might as well do that early.
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if (Versus.Count == 0)
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return 100;
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var armor = victim.TraitsImplementing<Armor>()
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.Where(a => !a.IsTraitDisabled && a.Info.Type != null && Versus.ContainsKey(a.Info.Type) &&
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(shape.Info.ArmorTypes.IsEmpty || shape.Info.ArmorTypes.Contains(a.Info.Type)))
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.Select(a => Versus[a.Info.Type]);
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return Util.ApplyPercentageModifiers(100, armor);
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}
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protected virtual void InflictDamage(Actor victim, Actor firedBy, HitShape shape, WarheadArgs args)
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{
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var damage = Util.ApplyPercentageModifiers(Damage, args.DamageModifiers.Append(DamageVersus(victim, shape, args)));
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victim.InflictDamage(firedBy, new Damage(damage, DamageTypes));
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}
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protected abstract void DoImpact(WPos pos, Actor firedBy, WarheadArgs args);
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}
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}
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