62 lines
1.5 KiB
C#
62 lines
1.5 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2017 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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[Desc("A dictionary of buildings placed on the map. Attach this to the world actor.")]
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public class BuildingInfluenceInfo : ITraitInfo
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{
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public object Create(ActorInitializer init) { return new BuildingInfluence(init.World); }
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}
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public class BuildingInfluence
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{
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readonly Map map;
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readonly CellLayer<Actor> influence;
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public BuildingInfluence(World world)
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{
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map = world.Map;
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influence = new CellLayer<Actor>(map);
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world.ActorAdded += a =>
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{
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var b = a.Info.TraitInfoOrDefault<BuildingInfo>();
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if (b == null)
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return;
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foreach (var u in b.Tiles(a.Location))
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if (influence.Contains(u) && influence[u] == null)
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influence[u] = a;
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};
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world.ActorRemoved += a =>
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{
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var b = a.Info.TraitInfoOrDefault<BuildingInfo>();
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if (b == null)
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return;
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foreach (var u in b.Tiles(a.Location))
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if (influence.Contains(u) && influence[u] == a)
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influence[u] = null;
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};
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}
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public Actor GetBuildingAt(CPos cell)
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{
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return influence.Contains(cell) ? influence[cell] : null;
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}
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}
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}
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