5f97e2de5a
This is a more natural representation than int that allows removal of casts in many places that require uint. Additionally, we can change the internal representation from long to uint, making the Color struct smaller. Since arrays of colors are common, this can save on memory.
79 lines
2.4 KiB
C#
79 lines
2.4 KiB
C#
#region Copyright & License Information
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/*
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* Copyright (c) The OpenRA Developers and Contributors
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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;
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using System.Linq;
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using OpenRA.Graphics;
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using OpenRA.Primitives;
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using OpenRA.Traits;
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namespace OpenRA.Mods.Common.Traits
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{
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[TraitLocation(SystemActors.World | SystemActors.EditorWorld)]
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[Desc("Creates a single color palette without any base palette file.")]
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sealed class PaletteFromRGBAInfo : TraitInfo, ITilesetSpecificPaletteInfo
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{
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[PaletteDefinition]
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[FieldLoader.Require]
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[Desc("Internal palette name")]
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public readonly string Name = null;
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[Desc("If defined, load the palette only for this tileset.")]
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public readonly string Tileset = null;
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[Desc("red color component")]
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public readonly int R = 0;
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[Desc("green color component")]
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public readonly int G = 0;
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[Desc("blue color component")]
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public readonly int B = 0;
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[Desc("alpha channel (transparency)")]
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public readonly int A = 255;
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public readonly bool AllowModifiers = true;
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[Desc("Index set to be fully transparent/invisible.")]
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public readonly int TransparentIndex = 0;
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string ITilesetSpecificPaletteInfo.Tileset => Tileset;
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public override object Create(ActorInitializer init) { return new PaletteFromRGBA(init.World, this); }
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}
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sealed class PaletteFromRGBA : ILoadsPalettes
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{
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readonly World world;
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readonly PaletteFromRGBAInfo info;
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public PaletteFromRGBA(World world, PaletteFromRGBAInfo info)
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{
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this.world = world;
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this.info = info;
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}
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public void LoadPalettes(WorldRenderer wr)
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{
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// Enable palette only for a specific tileset
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if (info.Tileset != null && !string.Equals(info.Tileset, world.Map.Tileset, StringComparison.InvariantCultureIgnoreCase))
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return;
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var a = info.A / 255f;
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var r = (int)(a * info.R + 0.5f).Clamp(0, 255);
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var g = (int)(a * info.G + 0.5f).Clamp(0, 255);
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var b = (int)(a * info.B + 0.5f).Clamp(0, 255);
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var c = Color.FromArgb(info.A, r, g, b).ToArgb();
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wr.AddPalette(info.Name, new ImmutablePalette(Enumerable.Range(0, Palette.Size).Select(i => (i == info.TransparentIndex) ? 0 : c)), info.AllowModifiers);
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}
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}
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}
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