0d24ccc47a
Changed all currently present zero-length array allocations in the codebase to use `Array.Empty` instead.
103 lines
2.3 KiB
C#
103 lines
2.3 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2021 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;
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using System.IO;
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using OpenRA.Graphics;
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using OpenRA.Primitives;
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namespace OpenRA.Mods.Cnc.SpriteLoaders
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{
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public class TmpRALoader : ISpriteLoader
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{
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class TmpRAFrame : ISpriteFrame
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{
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public SpriteFrameType Type => SpriteFrameType.Indexed8;
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public Size Size { get; private set; }
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public Size FrameSize { get; private set; }
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public float2 Offset => float2.Zero;
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public byte[] Data { get; set; }
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public bool DisableExportPadding => false;
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public TmpRAFrame(byte[] data, Size size)
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{
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FrameSize = size;
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Data = data;
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if (data == null)
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Data = Array.Empty<byte>();
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else
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Size = size;
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}
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}
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bool IsTmpRA(Stream s)
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{
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var start = s.Position;
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s.Position += 20;
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var a = s.ReadUInt32();
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s.Position += 2;
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var b = s.ReadUInt16();
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s.Position = start;
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return a == 0 && b == 0x2c73;
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}
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TmpRAFrame[] ParseFrames(Stream s)
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{
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var start = s.Position;
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var width = s.ReadUInt16();
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var height = s.ReadUInt16();
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var size = new Size(width, height);
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s.Position += 12;
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var imgStart = s.ReadUInt32();
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s.Position += 8;
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var indexEnd = s.ReadInt32();
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s.Position += 4;
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var indexStart = s.ReadInt32();
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s.Position = indexStart;
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var count = indexEnd - indexStart;
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var tiles = new TmpRAFrame[count];
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var tilesIndex = 0;
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foreach (var b in s.ReadBytes(count))
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{
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if (b != 255)
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{
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s.Position = imgStart + b * width * height;
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tiles[tilesIndex++] = new TmpRAFrame(s.ReadBytes(width * height), size);
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}
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else
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tiles[tilesIndex++] = new TmpRAFrame(null, size);
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}
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s.Position = start;
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return tiles;
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}
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public bool TryParseSprite(Stream s, string filename, out ISpriteFrame[] frames, out TypeDictionary metadata)
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{
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metadata = null;
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if (!IsTmpRA(s))
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{
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frames = null;
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return false;
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}
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frames = ParseFrames(s);
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return true;
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}
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}
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}
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