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Cache coloring delegate in AppearsOnRadar.RadarSignatureCells.

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RoosterDragon
2017-01-12 21:28:51 +00:00
parent 9c59d7e255
commit 2428b967bf
1 changed files with 12 additions and 1 deletions
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13
OpenRA.Mods.Common/Traits/Radar/AppearsOnRadar.cs
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@@ -9,6 +9,7 @@
*/
#endregion
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
@@ -29,6 +30,9 @@ namespace OpenRA.Mods.Common.Traits.Radar
readonly AppearsOnRadarInfo info;
IRadarColorModifier modifier;
Color currentColor = Color.Transparent;
Func<Pair<CPos, SubCell>, Pair<CPos, Color>> cellToSignature;
public AppearsOnRadar(AppearsOnRadarInfo info)
{
this.info = info;
@@ -48,7 +52,14 @@ namespace OpenRA.Mods.Common.Traits.Radar
if (info.UseLocation)
return new[] { Pair.New(self.Location, color) };
return self.OccupiesSpace.OccupiedCells().Select(c => Pair.New(c.First, color));
// PERF: Cache cellToSignature delegate to avoid allocations as color does not change often.
if (currentColor != color)
{
currentColor = color;
cellToSignature = c => Pair.New(c.First, color);
}
return self.OccupiesSpace.OccupiedCells().Select(cellToSignature);
}
}
}