81 lines
2.4 KiB
C#
81 lines
2.4 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 System.Linq;
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using OpenRA.Traits;
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namespace OpenRA.Mods.Common.Traits
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{
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[Desc("Grants a condition to the actor this is attached to when prerequisites are available.")]
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public class GrantConditionOnPrerequisiteInfo : TraitInfo
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{
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[FieldLoader.Require]
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[GrantedConditionReference]
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[Desc("The condition to grant.")]
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public readonly string Condition = null;
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[FieldLoader.Require]
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[Desc("List of required prerequisites.")]
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public readonly string[] Prerequisites = { };
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public override object Create(ActorInitializer init) { return new GrantConditionOnPrerequisite(init.Self, this); }
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}
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public class GrantConditionOnPrerequisite : INotifyCreated, INotifyAddedToWorld, INotifyRemovedFromWorld, INotifyOwnerChanged
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{
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readonly GrantConditionOnPrerequisiteInfo info;
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bool wasAvailable;
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GrantConditionOnPrerequisiteManager globalManager;
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int conditionToken = Actor.InvalidConditionToken;
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public GrantConditionOnPrerequisite(Actor self, GrantConditionOnPrerequisiteInfo info)
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{
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this.info = info;
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}
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void INotifyCreated.Created(Actor self)
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{
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globalManager = self.Owner.PlayerActor.Trait<GrantConditionOnPrerequisiteManager>();
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}
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void INotifyAddedToWorld.AddedToWorld(Actor self)
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{
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if (info.Prerequisites.Any())
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globalManager.Register(self, this, info.Prerequisites);
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}
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void INotifyRemovedFromWorld.RemovedFromWorld(Actor self)
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{
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if (info.Prerequisites.Any())
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globalManager.Unregister(self, this, info.Prerequisites);
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}
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void INotifyOwnerChanged.OnOwnerChanged(Actor self, Player oldOwner, Player newOwner)
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{
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globalManager = newOwner.PlayerActor.Trait<GrantConditionOnPrerequisiteManager>();
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}
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public void PrerequisitesUpdated(Actor self, bool available)
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{
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if (available == wasAvailable)
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return;
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if (available && conditionToken == Actor.InvalidConditionToken)
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conditionToken = self.GrantCondition(info.Condition);
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else if (!available && conditionToken != Actor.InvalidConditionToken)
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conditionToken = self.RevokeCondition(conditionToken);
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wasAvailable = available;
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}
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}
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}
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