63 lines
2.1 KiB
C#
63 lines
2.1 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2021 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 OpenRA.Traits;
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namespace OpenRA.Mods.Common.Traits
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{
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public abstract class GrantConditionOnLayerInfo : ConditionalTraitInfo
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{
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[FieldLoader.Require]
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[GrantedConditionReference]
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[Desc("The condition to grant to self when changing to specific custom layer.")]
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public readonly string Condition = null;
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}
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public abstract class GrantConditionOnLayer<InfoType> : ConditionalTrait<InfoType>, INotifyCustomLayerChanged where InfoType : GrantConditionOnLayerInfo
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{
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protected readonly byte ValidLayerType;
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protected int conditionToken = Actor.InvalidConditionToken;
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public GrantConditionOnLayer(Actor self, InfoType info, byte validLayer)
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: base(info)
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{
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ValidLayerType = validLayer;
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}
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void INotifyCustomLayerChanged.CustomLayerChanged(Actor self, byte oldLayer, byte newLayer)
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{
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UpdateConditions(self, oldLayer, newLayer);
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}
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protected virtual void UpdateConditions(Actor self, byte oldLayer, byte newLayer)
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{
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if (newLayer == ValidLayerType && oldLayer != ValidLayerType && conditionToken == Actor.InvalidConditionToken)
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conditionToken = self.GrantCondition(Info.Condition);
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else if (newLayer != ValidLayerType && oldLayer == ValidLayerType && conditionToken != Actor.InvalidConditionToken)
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conditionToken = self.RevokeCondition(conditionToken);
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}
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protected override void TraitEnabled(Actor self)
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{
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if (self.Location.Layer == ValidLayerType && conditionToken == Actor.InvalidConditionToken)
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conditionToken = self.GrantCondition(Info.Condition);
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}
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protected override void TraitDisabled(Actor self)
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{
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if (conditionToken == Actor.InvalidConditionToken)
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return;
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conditionToken = self.RevokeCondition(conditionToken);
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}
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}
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}
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