146 lines
3.9 KiB
C#
146 lines
3.9 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.Collections.Generic;
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using System.Linq;
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using OpenRA.Activities;
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using OpenRA.Mods.Common.Traits;
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using OpenRA.Traits;
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namespace OpenRA.Mods.Common.Activities
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{
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public class UnloadCargo : Activity
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{
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readonly Actor self;
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readonly Cargo cargo;
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readonly INotifyUnload[] notifiers;
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readonly bool unloadAll;
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readonly Aircraft aircraft;
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readonly Mobile mobile;
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readonly bool assignTargetOnFirstRun;
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readonly WDist unloadRange;
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Target destination;
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bool takeOffAfterUnload;
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public UnloadCargo(Actor self, WDist unloadRange, bool unloadAll = true)
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: this(self, Target.Invalid, unloadRange, unloadAll)
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{
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assignTargetOnFirstRun = true;
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}
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public UnloadCargo(Actor self, in Target destination, WDist unloadRange, bool unloadAll = true)
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{
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this.self = self;
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cargo = self.Trait<Cargo>();
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notifiers = self.TraitsImplementing<INotifyUnload>().ToArray();
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this.unloadAll = unloadAll;
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aircraft = self.TraitOrDefault<Aircraft>();
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mobile = self.TraitOrDefault<Mobile>();
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this.destination = destination;
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this.unloadRange = unloadRange;
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}
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public (CPos Cell, SubCell SubCell)? ChooseExitSubCell(Actor passenger)
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{
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var pos = passenger.Trait<IPositionable>();
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return cargo.CurrentAdjacentCells
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.Shuffle(self.World.SharedRandom)
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.Select(c => (c, pos.GetAvailableSubCell(c)))
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.Cast<(CPos, SubCell SubCell)?>()
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.FirstOrDefault(s => s.Value.SubCell != SubCell.Invalid);
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}
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IEnumerable<CPos> BlockedExitCells(Actor passenger)
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{
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var pos = passenger.Trait<IPositionable>();
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// Find the cells that are blocked by transient actors
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return cargo.CurrentAdjacentCells
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.Where(c => pos.CanEnterCell(c, null, BlockedByActor.All) != pos.CanEnterCell(c, null, BlockedByActor.None));
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}
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protected override void OnFirstRun(Actor self)
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{
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if (assignTargetOnFirstRun)
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destination = Target.FromCell(self.World, self.Location);
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// Move to the target destination
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if (aircraft != null)
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{
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// Queue the activity even if already landed in case self.Location != destination
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QueueChild(new Land(self, destination, unloadRange));
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takeOffAfterUnload = !aircraft.AtLandAltitude;
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}
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else if (mobile != null)
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{
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var cell = self.World.Map.Clamp(this.self.World.Map.CellContaining(destination.CenterPosition));
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QueueChild(new Move(self, cell, unloadRange));
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}
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QueueChild(new Wait(cargo.Info.BeforeUnloadDelay));
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}
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public override bool Tick(Actor self)
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{
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if (IsCanceling || cargo.IsEmpty())
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return true;
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if (cargo.CanUnload())
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{
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foreach (var inu in notifiers)
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inu.Unloading(self);
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var actor = cargo.Peek();
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var spawn = self.CenterPosition;
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var exitSubCell = ChooseExitSubCell(actor);
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if (exitSubCell == null)
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{
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self.NotifyBlocker(BlockedExitCells(actor));
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QueueChild(new Wait(10));
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return false;
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}
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cargo.Unload(self);
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self.World.AddFrameEndTask(w =>
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{
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if (actor.Disposed)
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return;
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var move = actor.Trait<IMove>();
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var pos = actor.Trait<IPositionable>();
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pos.SetPosition(actor, exitSubCell.Value.Cell, exitSubCell.Value.SubCell);
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pos.SetCenterPosition(actor, spawn);
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actor.CancelActivity();
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w.Add(actor);
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});
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}
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if (!unloadAll || !cargo.CanUnload())
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{
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if (cargo.Info.AfterUnloadDelay > 0)
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QueueChild(new Wait(cargo.Info.AfterUnloadDelay, false));
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if (takeOffAfterUnload)
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QueueChild(new TakeOff(self));
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return true;
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}
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return false;
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}
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}
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}
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