114 lines
3.1 KiB
C#
114 lines
3.1 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2011 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. For more information,
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* see COPYING.
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*/
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#endregion
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using System;
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using System.Xml;
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using System.Collections.Generic;
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using System.Linq;
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using OpenRA.FileFormats;
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namespace OpenRA.Graphics
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{
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public class Sequence
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{
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readonly Sprite[] sprites;
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readonly int start, length, stride, facings, tick;
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readonly bool reverseFacings, transpose;
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public readonly string Name;
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public int Start { get { return start; } }
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public int End { get { return start + length; } }
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public int Length { get { return length; } }
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public int Stride { get { return stride; } }
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public int Facings { get { return facings; } }
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public int Tick { get { return tick; } }
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public readonly int ZOffset;
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public Sequence(string unit, string name, MiniYaml info)
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{
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var srcOverride = info.Value;
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Name = name;
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var d = info.NodesDict;
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var offset = float2.Zero;
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start = int.Parse(d["Start"].Value);
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if (d.ContainsKey("Offset"))
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offset = FieldLoader.GetValue<float2>("Offset", d["Offset"].Value);
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// Apply offset to each sprite in the sequence
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// Different sequences may apply different offsets to the same frame
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sprites = Game.modData.SpriteLoader.LoadAllSprites(srcOverride ?? unit).Select(
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s => new Sprite(s.sheet, s.bounds, s.offset + offset, s.channel)).ToArray();
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if (!d.ContainsKey("Length"))
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length = 1;
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else if (d["Length"].Value == "*")
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length = sprites.Length - Start;
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else
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length = int.Parse(d["Length"].Value);
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if (d.ContainsKey("Stride"))
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stride = int.Parse(d["Stride"].Value);
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else
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stride = length;
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if (d.ContainsKey("Facings"))
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{
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var f = int.Parse(d["Facings"].Value);
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facings = Math.Abs(f);
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reverseFacings = f < 0;
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}
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else
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facings = 1;
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if (d.ContainsKey("Tick"))
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tick = int.Parse(d["Tick"].Value);
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else
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tick = 40;
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if (d.ContainsKey("Transpose"))
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transpose = bool.Parse(d["Transpose"].Value);
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if (d.ContainsKey("ZOffset"))
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ZOffset = int.Parse(d["ZOffset"].Value);
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if (length > stride)
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throw new InvalidOperationException(
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"{0}: Sequence {1}.{2}: Length must be <= stride"
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.F(info.Nodes[0].Location, unit, name));
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if (start < 0 || start + facings * stride > sprites.Length)
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throw new InvalidOperationException(
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"{6}: Sequence {0}.{1} uses frames [{2}..{3}] of SHP `{4}`, but only 0..{5} actually exist"
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.F(unit, name, start, start + facings * stride - 1, srcOverride ?? unit, sprites.Length - 1,
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info.Nodes[0].Location));
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}
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public Sprite GetSprite(int frame)
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{
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return GetSprite(frame, 0);
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}
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public Sprite GetSprite(int frame, int facing)
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{
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var f = Traits.Util.QuantizeFacing(facing, facings);
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if (reverseFacings)
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f = (facings - f) % facings;
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int i = transpose ? (frame % length) * facings + f :
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(f * stride) + (frame % length);
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return sprites[start + i];
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}
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}
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}
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