146 lines
3.8 KiB
C#
146 lines
3.8 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.Collections.Generic;
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using System.Linq;
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using OpenRA.FileFormats;
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using OpenRA.FileFormats.Graphics;
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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 bool reverseFacings, transpose;
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public readonly string Name;
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public readonly int Start;
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public readonly int Length;
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public readonly int Stride;
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public readonly int Facings;
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public readonly int Tick;
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public readonly int ZOffset;
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public readonly int ShadowStart;
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public readonly int ShadowZOffset;
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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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var blendMode = BlendMode.Alpha;
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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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if (d.ContainsKey("BlendMode"))
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blendMode = FieldLoader.GetValue<BlendMode>("BlendMode", d["BlendMode"].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, blendMode)).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("ShadowStart"))
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ShadowStart = int.Parse(d["ShadowStart"].Value);
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else
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ShadowStart = -1;
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if (d.ContainsKey("ShadowZOffset"))
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{
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WRange r;
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if (WRange.TryParse(d["ShadowZOffset"].Value, out r))
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ShadowZOffset = r.Range;
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}
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else
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ShadowZOffset = -5;
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if (d.ContainsKey("ZOffset"))
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{
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WRange r;
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if (WRange.TryParse(d["ZOffset"].Value, out r))
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ZOffset = r.Range;
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}
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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 || ShadowStart + 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(Start, 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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return GetSprite(Start, frame, facing);
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}
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public Sprite GetShadow(int frame, int facing)
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{
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return ShadowStart >= 0 ? GetSprite(ShadowStart, frame, facing) : null;
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}
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Sprite GetSprite(int start, 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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