119 lines
3.4 KiB
C#
119 lines
3.4 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2020 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 System.Collections.Generic;
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using OpenRA.Graphics;
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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("Palette effect used for sprinkle \"animations\".")]
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class RotationPaletteEffectInfo : ITraitInfo
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{
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[Desc("Defines to which palettes this effect should be applied to.",
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"If none specified, it applies to all palettes not explicitly excluded.")]
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public readonly HashSet<string> Palettes = new HashSet<string>();
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[Desc("Defines for which tileset IDs this effect should be loaded.",
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"If none specified, it applies to all tileset IDs not explicitly excluded.")]
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public readonly HashSet<string> Tilesets = new HashSet<string>();
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[Desc("Defines which palettes should be excluded from this effect.")]
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public readonly HashSet<string> ExcludePalettes = new HashSet<string>();
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[Desc("Don't apply the effect for these tileset IDs.")]
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public readonly HashSet<string> ExcludeTilesets = new HashSet<string>();
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[Desc("Palette index of first RotationRange color.")]
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public readonly int RotationBase = 0x60;
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[Desc("Range of colors to rotate.")]
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public readonly int RotationRange = 7;
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[Desc("Step towards next color index per tick.")]
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public readonly float RotationStep = .25f;
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public object Create(ActorInitializer init) { return new RotationPaletteEffect(init.World, this); }
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}
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class RotationPaletteEffect : ITick, IPaletteModifier
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{
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readonly RotationPaletteEffectInfo info;
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readonly uint[] rotationBuffer;
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readonly bool validTileset;
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readonly string tilesetId;
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float t = 0;
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public RotationPaletteEffect(World world, RotationPaletteEffectInfo info)
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{
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this.info = info;
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rotationBuffer = new uint[info.RotationRange];
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tilesetId = world.Map.Rules.TileSet.Id;
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validTileset = IsValidTileset();
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}
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bool IsValidTileset()
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{
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if (info.Tilesets.Count == 0 && info.ExcludeTilesets.Count == 0)
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return true;
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if (info.Tilesets.Count == 0 && !info.ExcludeTilesets.Contains(tilesetId))
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return true;
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return info.Tilesets.Contains(tilesetId) && !info.ExcludeTilesets.Contains(tilesetId);
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}
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void ITick.Tick(Actor self)
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{
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if (!validTileset)
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return;
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t += info.RotationStep;
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}
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public void AdjustPalette(IReadOnlyDictionary<string, MutablePalette> palettes)
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{
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if (!validTileset)
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return;
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var rotate = (int)t % info.RotationRange;
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if (rotate == 0)
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return;
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foreach (var kvp in palettes)
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{
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if ((info.Palettes.Count > 0 && !StartsWithAny(kvp.Key, info.Palettes))
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|| (info.ExcludePalettes.Count > 0 && StartsWithAny(kvp.Key, info.ExcludePalettes)))
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continue;
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var palette = kvp.Value;
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for (var i = 0; i < info.RotationRange; i++)
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rotationBuffer[(rotate + i) % info.RotationRange] = palette[info.RotationBase + i];
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for (var i = 0; i < info.RotationRange; i++)
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palette[info.RotationBase + i] = rotationBuffer[i];
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}
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}
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static bool StartsWithAny(string name, HashSet<string> prefixes)
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{
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// PERF: Avoid LINQ.
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foreach (var pref in prefixes)
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if (name.StartsWith(pref))
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return true;
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return false;
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}
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}
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}
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