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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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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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 = (uint)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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