102 lines
3.0 KiB
C#
102 lines
3.0 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2015 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;
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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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public abstract class AffectsShroudInfo : ITraitInfo
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{
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public readonly WDist Range = WDist.Zero;
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[Desc("Possible values are CenterPosition (measure range from the center) and ",
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"Footprint (measure range from the footprint)")]
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public readonly VisibilityType Type = VisibilityType.Footprint;
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public abstract object Create(ActorInitializer init);
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}
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public abstract class AffectsShroud : ITick, ISync, INotifyAddedToWorld, INotifyRemovedFromWorld
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{
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static readonly PPos[] NoCells = { };
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readonly AffectsShroudInfo info;
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[Sync] CPos cachedLocation;
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[Sync] bool cachedDisabled;
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protected abstract void AddCellsToPlayerShroud(Actor self, Player player, PPos[] uv);
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protected abstract void RemoveCellsFromPlayerShroud(Actor self, Player player);
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protected virtual bool IsDisabled(Actor self) { return false; }
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public AffectsShroud(Actor self, AffectsShroudInfo info) { this.info = info; }
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PPos[] ProjectedCells(Actor self)
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{
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var map = self.World.Map;
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var range = Range;
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if (range == WDist.Zero)
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return NoCells;
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if (info.Type == VisibilityType.Footprint)
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return self.OccupiesSpace.OccupiedCells()
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.SelectMany(kv => Shroud.ProjectedCellsInRange(map, kv.First, range))
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.Distinct().ToArray();
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return Shroud.ProjectedCellsInRange(map, self.CenterPosition, range)
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.ToArray();
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}
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public void Tick(Actor self)
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{
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if (!self.IsInWorld)
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return;
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var centerPosition = self.CenterPosition;
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var projectedPos = centerPosition - new WVec(0, centerPosition.Z, centerPosition.Z);
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var projectedLocation = self.World.Map.CellContaining(projectedPos);
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var disabled = IsDisabled(self);
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if (cachedLocation == projectedLocation && cachedDisabled == disabled)
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return;
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cachedLocation = projectedLocation;
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cachedDisabled = disabled;
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var cells = ProjectedCells(self);
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foreach (var p in self.World.Players)
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{
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RemoveCellsFromPlayerShroud(self, p);
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AddCellsToPlayerShroud(self, p, cells);
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}
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}
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public void AddedToWorld(Actor self)
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{
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var centerPosition = self.CenterPosition;
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var projectedPos = centerPosition - new WVec(0, centerPosition.Z, centerPosition.Z);
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cachedLocation = self.World.Map.CellContaining(projectedPos);
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cachedDisabled = IsDisabled(self);
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var cells = ProjectedCells(self);
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foreach (var p in self.World.Players)
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AddCellsToPlayerShroud(self, p, cells);
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}
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public void RemovedFromWorld(Actor self)
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{
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foreach (var p in self.World.Players)
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RemoveCellsFromPlayerShroud(self, p);
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}
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public WDist Range { get { return cachedDisabled ? WDist.Zero : info.Range; } }
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}
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}
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