342 lines
12 KiB
C#
342 lines
12 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2018 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.Collections.Generic;
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using System.Drawing;
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using System.IO;
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using System.Linq;
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using OpenRA.Graphics;
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namespace OpenRA.Mods.Common.Graphics
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{
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public class DefaultSpriteSequenceLoader : ISpriteSequenceLoader
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{
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public Action<string> OnMissingSpriteError { get; set; }
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public DefaultSpriteSequenceLoader(ModData modData) { }
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public virtual ISpriteSequence CreateSequence(ModData modData, TileSet tileSet, SpriteCache cache, string sequence, string animation, MiniYaml info)
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{
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return new DefaultSpriteSequence(modData, tileSet, cache, this, sequence, animation, info);
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}
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public IReadOnlyDictionary<string, ISpriteSequence> ParseSequences(ModData modData, TileSet tileSet, SpriteCache cache, MiniYamlNode node)
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{
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var sequences = new Dictionary<string, ISpriteSequence>();
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var nodes = node.Value.ToDictionary();
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MiniYaml defaults;
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try
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{
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if (nodes.TryGetValue("Defaults", out defaults))
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{
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nodes.Remove("Defaults");
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foreach (var n in nodes)
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{
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n.Value.Nodes = MiniYaml.Merge(new[] { defaults.Nodes, n.Value.Nodes });
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n.Value.Value = n.Value.Value ?? defaults.Value;
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}
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}
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}
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catch (Exception e)
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{
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throw new InvalidDataException("Error occurred while parsing {0}".F(node.Key), e);
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}
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foreach (var kvp in nodes)
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{
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using (new Support.PerfTimer("new Sequence(\"{0}\")".F(node.Key), 20))
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{
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try
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{
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sequences.Add(kvp.Key, CreateSequence(modData, tileSet, cache, node.Key, kvp.Key, kvp.Value));
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}
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catch (FileNotFoundException ex)
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{
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// Eat the FileNotFound exceptions from missing sprites
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OnMissingSpriteError(ex.Message);
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}
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}
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}
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return new ReadOnlyDictionary<string, ISpriteSequence>(sequences);
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}
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}
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public class DefaultSpriteSequence : ISpriteSequence
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{
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static readonly WDist DefaultShadowSpriteZOffset = new WDist(-5);
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protected Sprite[] sprites;
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readonly bool reverseFacings, transpose, useClassicFacingFudge;
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protected readonly ISpriteSequenceLoader Loader;
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public string Name { get; private set; }
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public int Start { get; private set; }
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public int Length { get; private set; }
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public int Stride { get; private set; }
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public int Facings { get; private set; }
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public int Tick { get; private set; }
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public int ZOffset { get; private set; }
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public float ZRamp { get; private set; }
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public int ShadowStart { get; private set; }
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public int ShadowZOffset { get; private set; }
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public int[] Frames { get; private set; }
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public Rectangle Bounds { get; private set; }
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protected virtual string GetSpriteSrc(ModData modData, TileSet tileSet, string sequence, string animation, string sprite, Dictionary<string, MiniYaml> d)
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{
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return sprite ?? sequence;
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}
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protected static T LoadField<T>(Dictionary<string, MiniYaml> d, string key, T fallback)
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{
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MiniYaml value;
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if (d.TryGetValue(key, out value))
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return FieldLoader.GetValue<T>(key, value.Value);
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return fallback;
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}
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protected static Rectangle FlipRectangle(Rectangle rect, bool flipX, bool flipY)
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{
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var left = flipX ? rect.Right : rect.Left;
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var top = flipY ? rect.Bottom : rect.Top;
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var right = flipX ? rect.Left : rect.Right;
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var bottom = flipY ? rect.Top : rect.Bottom;
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return Rectangle.FromLTRB(left, top, right, bottom);
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}
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public DefaultSpriteSequence(ModData modData, TileSet tileSet, SpriteCache cache, ISpriteSequenceLoader loader, string sequence, string animation, MiniYaml info)
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{
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Name = animation;
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Loader = loader;
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var d = info.ToDictionary();
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try
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{
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Start = LoadField(d, "Start", 0);
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ShadowStart = LoadField(d, "ShadowStart", -1);
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ShadowZOffset = LoadField(d, "ShadowZOffset", DefaultShadowSpriteZOffset).Length;
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ZOffset = LoadField(d, "ZOffset", WDist.Zero).Length;
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ZRamp = LoadField(d, "ZRamp", 0);
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Tick = LoadField(d, "Tick", 40);
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transpose = LoadField(d, "Transpose", false);
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Frames = LoadField<int[]>(d, "Frames", null);
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useClassicFacingFudge = LoadField(d, "UseClassicFacingFudge", false);
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var flipX = LoadField(d, "FlipX", false);
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var flipY = LoadField(d, "FlipY", false);
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Facings = LoadField(d, "Facings", 1);
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if (Facings < 0)
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{
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reverseFacings = true;
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Facings = -Facings;
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}
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if (useClassicFacingFudge && Facings != 32)
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throw new InvalidOperationException(
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"{0}: Sequence {1}.{2}: UseClassicFacingFudge is only valid for 32 facings"
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.F(info.Nodes[0].Location, sequence, animation));
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var offset = LoadField(d, "Offset", float3.Zero);
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var blendMode = LoadField(d, "BlendMode", BlendMode.Alpha);
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MiniYaml combine;
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if (d.TryGetValue("Combine", out combine))
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{
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var combined = Enumerable.Empty<Sprite>();
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foreach (var sub in combine.Nodes)
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{
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var sd = sub.Value.ToDictionary();
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// Allow per-sprite offset, flipping, start, and length
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var subStart = LoadField(sd, "Start", 0);
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var subOffset = LoadField(sd, "Offset", float3.Zero);
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var subFlipX = LoadField(sd, "FlipX", false);
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var subFlipY = LoadField(sd, "FlipY", false);
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var subSrc = GetSpriteSrc(modData, tileSet, sequence, animation, sub.Key, sd);
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var subSprites = cache[subSrc].Select(
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s => new Sprite(s.Sheet,
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FlipRectangle(s.Bounds, subFlipX, subFlipY), ZRamp,
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new float3(subFlipX ? -s.Offset.X : s.Offset.X, subFlipY ? -s.Offset.Y : s.Offset.Y, s.Offset.Z) + subOffset + offset,
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s.Channel, blendMode));
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var subLength = 0;
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MiniYaml subLengthYaml;
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if (sd.TryGetValue("Length", out subLengthYaml) && subLengthYaml.Value == "*")
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subLength = subSprites.Count() - subStart;
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else
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subLength = LoadField(sd, "Length", 1);
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combined = combined.Concat(subSprites.Skip(subStart).Take(subLength));
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}
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sprites = combined.ToArray();
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}
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else
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{
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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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var src = GetSpriteSrc(modData, tileSet, sequence, animation, info.Value, d);
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sprites = cache[src].Select(
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s => new Sprite(s.Sheet,
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FlipRectangle(s.Bounds, flipX, flipY), ZRamp,
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new float3(flipX ? -s.Offset.X : s.Offset.X, flipY ? -s.Offset.Y : s.Offset.Y, s.Offset.Z) + offset,
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s.Channel, blendMode)).ToArray();
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}
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var depthSprite = LoadField<string>(d, "DepthSprite", null);
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if (!string.IsNullOrEmpty(depthSprite))
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{
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var depthSpriteFrame = LoadField(d, "DepthSpriteFrame", 0);
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var depthOffset = LoadField(d, "DepthSpriteOffset", float2.Zero);
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var depthSprites = cache.AllCached(depthSprite)
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.Select(s => s[depthSpriteFrame]);
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sprites = sprites.Select(s =>
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{
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// The depth sprite must live on the same sheet as the main sprite
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var ds = depthSprites.FirstOrDefault(dss => dss.Sheet == s.Sheet);
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if (ds == null)
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{
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// The sequence has probably overflowed onto a new sheet.
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// Allocating a new depth sprite on this sheet will almost certainly work
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ds = cache.Reload(depthSprite)[depthSpriteFrame];
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depthSprites = cache.AllCached(depthSprite)
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.Select(ss => ss[depthSpriteFrame]);
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// If that doesn't work then we may be referencing a cached sprite from an earlier sheet
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// TODO: We could try and reallocate the main sprite, but that requires more complicated code and a perf hit
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// We'll only cross that bridge if this becomes a problem in reality
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if (ds.Sheet != s.Sheet)
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throw new SheetOverflowException("Cross-sheet depth sprite reference: {0}.{1}: {2}");
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}
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var cw = (ds.Bounds.Left + ds.Bounds.Right) / 2 + (int)(s.Offset.X + depthOffset.X);
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var ch = (ds.Bounds.Top + ds.Bounds.Bottom) / 2 + (int)(s.Offset.Y + depthOffset.Y);
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var w = s.Bounds.Width / 2;
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var h = s.Bounds.Height / 2;
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var r = Rectangle.FromLTRB(cw - w, ch - h, cw + w, ch + h);
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return new SpriteWithSecondaryData(s, r, ds.Channel);
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}).ToArray();
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}
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MiniYaml length;
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if (d.TryGetValue("Length", out length) && length.Value == "*")
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Length = sprites.Length - Start;
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else
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Length = LoadField(d, "Length", 1);
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// Plays the animation forwards, and then in reverse
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if (LoadField(d, "Reverses", false))
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{
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var frames = Frames ?? Exts.MakeArray(Length, i => Start + i);
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Frames = frames.Concat(frames.Skip(1).Take(frames.Length - 2).Reverse()).ToArray();
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Length = 2 * Length - 2;
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}
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Stride = LoadField(d, "Stride", Length);
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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, sequence, animation));
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if (Frames != null && Length > Frames.Length)
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throw new InvalidOperationException(
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"{0}: Sequence {1}.{2}: Length must be <= Frames.Length"
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.F(info.Nodes[0].Location, sequence, animation));
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if (Start < 0 || Start + Facings * Stride > sprites.Length)
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throw new InvalidOperationException(
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"{5}: Sequence {0}.{1} uses frames [{2}..{3}], but only 0..{4} actually exist"
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.F(sequence, animation, Start, Start + Facings * Stride - 1, sprites.Length - 1,
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info.Nodes[0].Location));
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if (ShadowStart + Facings * Stride > sprites.Length)
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throw new InvalidOperationException(
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"{5}: Sequence {0}.{1}'s shadow frames use frames [{2}..{3}], but only [0..{4}] actually exist"
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.F(sequence, animation, ShadowStart, ShadowStart + Facings * Stride - 1, sprites.Length - 1,
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info.Nodes[0].Location));
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var boundSprites = SpriteBounds(sprites, Frames, Start, Facings, Length, Stride, transpose);
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if (ShadowStart > 0)
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boundSprites = boundSprites.Concat(SpriteBounds(sprites, Frames, ShadowStart, Facings, Length, Stride, transpose));
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if (boundSprites.Any())
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{
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Bounds = boundSprites.First();
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foreach (var b in boundSprites.Skip(1))
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Bounds = Rectangle.Union(Bounds, b);
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}
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}
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catch (FormatException f)
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{
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throw new FormatException("Failed to parse sequences for {0}.{1} at {2}:\n{3}".F(sequence, animation, info.Nodes[0].Location, f));
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}
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}
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/// <summary>Returns the bounds of all of the sprites that can appear in this animation</summary>
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static IEnumerable<Rectangle> SpriteBounds(Sprite[] sprites, int[] frames, int start, int facings, int length, int stride, bool transpose)
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{
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for (var facing = 0; facing < facings; facing++)
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{
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for (var frame = 0; frame < length; frame++)
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{
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var i = transpose ? (frame % length) * facings + facing :
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(facing * stride) + (frame % length);
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var s = frames != null ? sprites[frames[i]] : sprites[start + i];
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if (!s.Bounds.IsEmpty)
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yield return new Rectangle(
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(int)(s.Offset.X - s.Size.X / 2),
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(int)(s.Offset.Y - s.Size.Y / 2),
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s.Bounds.Width, s.Bounds.Height);
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}
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}
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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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protected virtual Sprite GetSprite(int start, int frame, int facing)
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{
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var f = Util.QuantizeFacing(facing, Facings, useClassicFacingFudge);
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if (reverseFacings)
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f = (Facings - f) % Facings;
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var i = transpose ? (frame % Length) * Facings + f :
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(f * Stride) + (frame % Length);
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if (Frames != null)
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return sprites[Frames[i]];
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return sprites[start + i];
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}
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}
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}
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