88 lines
2.7 KiB
C#
88 lines
2.7 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2019 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;
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using OpenRA.Primitives;
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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("Reserve landing places for aircraft.")]
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class ReservableInfo : TraitInfo<Reservable> { }
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public class Reservable : ITick, INotifyOwnerChanged, INotifySold, INotifyActorDisposing
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{
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Actor reservedFor;
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Aircraft reservedForAircraft;
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void ITick.Tick(Actor self)
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{
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// Nothing to do.
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if (reservedFor == null)
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return;
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if (!Target.FromActor(reservedFor).IsValidFor(self))
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{
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// Not likely to arrive now.
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reservedForAircraft.UnReserve();
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reservedFor = null;
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reservedForAircraft = null;
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}
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}
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public IDisposable Reserve(Actor self, Actor forActor, Aircraft forAircraft)
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{
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if (reservedForAircraft != null && reservedForAircraft.MayYieldReservation)
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reservedForAircraft.UnReserve();
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reservedFor = forActor;
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reservedForAircraft = forAircraft;
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// NOTE: we really don't care about the GC eating DisposableActions that apply to a world *other* than
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// the one we're playing in.
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return new DisposableAction(
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() => { reservedFor = null; reservedForAircraft = null; },
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() => Game.RunAfterTick(() =>
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{
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if (Game.IsCurrentWorld(self.World))
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throw new InvalidOperationException(
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"Attempted to finalize an undisposed DisposableAction. {0} ({1}) reserved {2} ({3})".F(
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forActor.Info.Name, forActor.ActorID, self.Info.Name, self.ActorID));
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}));
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}
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public static bool IsReserved(Actor a)
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{
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var res = a.TraitOrDefault<Reservable>();
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return res != null && res.reservedForAircraft != null && !res.reservedForAircraft.MayYieldReservation;
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}
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public static bool IsAvailableFor(Actor reservable, Actor forActor)
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{
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var res = reservable.TraitOrDefault<Reservable>();
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return res == null || res.reservedForAircraft == null || res.reservedForAircraft.MayYieldReservation || res.reservedFor == forActor;
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}
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private void UnReserve()
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{
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if (reservedForAircraft != null)
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reservedForAircraft.UnReserve();
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}
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void INotifyActorDisposing.Disposing(Actor self) { UnReserve(); }
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void INotifyOwnerChanged.OnOwnerChanged(Actor self, Player oldOwner, Player newOwner) { UnReserve(); }
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void INotifySold.Selling(Actor self) { UnReserve(); }
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void INotifySold.Sold(Actor self) { UnReserve(); }
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}
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}
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