93 lines
2.5 KiB
C#
93 lines
2.5 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2014 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. For more information,
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* 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.Mods.RA.Move;
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using OpenRA.Primitives;
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using OpenRA.Traits;
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namespace OpenRA.Mods.RA.Crates
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{
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class GiveUnitCrateActionInfo : CrateActionInfo
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{
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[ActorReference]
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[Desc("Unit to give")]
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public readonly string Unit = null;
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[Desc("Override the owner of the newly spawned unit: e.g Creeps or Neutral")]
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public readonly string Owner = null;
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[Desc("Races that are allowed to trigger this action")]
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public readonly string[] Race = null;
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public override object Create(ActorInitializer init) { return new GiveUnitCrateAction(init.self, this); }
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}
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class GiveUnitCrateAction : CrateAction
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{
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GiveUnitCrateActionInfo Info;
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public GiveUnitCrateAction(Actor self, GiveUnitCrateActionInfo info)
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: base(self, info) { Info = info; }
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public bool CanGiveTo(Actor collector)
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{
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if (Info.Race != null && !Info.Race.Contains(collector.Owner.Country.Race))
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return false;
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// avoid dumping tanks in the sea, and ships on dry land.
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if (!GetSuitableCells(collector.Location).Any())
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return false;
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return true;
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}
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public override int GetSelectionShares(Actor collector)
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{
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if (!CanGiveTo(collector)) return 0;
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return base.GetSelectionShares(collector);
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}
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public override void Activate(Actor collector)
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{
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var location = ChooseEmptyCellNear(collector);
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if (location != null)
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collector.World.AddFrameEndTask(
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w => w.CreateActor(Info.Unit, new TypeDictionary
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{
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new LocationInit(location.Value ),
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new OwnerInit(Info.Owner ?? collector.Owner.InternalName)
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}));
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base.Activate(collector);
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}
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IEnumerable<CPos> GetSuitableCells(CPos near)
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{
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var mi = self.World.Map.Rules.Actors[Info.Unit].Traits.Get<MobileInfo>();
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for (var i = -1; i < 2; i++)
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for (var j = -1; j < 2; j++)
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if (mi.CanEnterCell(self.World, self, near + new CVec(i, j), null, true, true))
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yield return near + new CVec(i, j);
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}
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CPos? ChooseEmptyCellNear(Actor a)
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{
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var possibleCells = GetSuitableCells(a.Location).ToArray();
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if (possibleCells.Length == 0)
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return null;
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return possibleCells.Random(self.World.SharedRandom);
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}
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}
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}
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