osu/osu.Game/Beatmaps/Formats/LegacyStoryboardDecoder.cs
2020-03-12 23:29:11 -07:00

347 lines
14 KiB
C#

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using System;
using System.Collections.Generic;
using System.IO;
using osu.Framework.Graphics;
using osu.Framework.Utils;
using osu.Game.Beatmaps.Legacy;
using osu.Game.IO;
using osu.Game.Storyboards;
using osuTK;
using osuTK.Graphics;
namespace osu.Game.Beatmaps.Formats
{
public class LegacyStoryboardDecoder : LegacyDecoder<Storyboard>
{
private StoryboardSprite storyboardSprite;
private CommandTimelineGroup timelineGroup;
private Storyboard storyboard;
private readonly Dictionary<string, string> variables = new Dictionary<string, string>();
public LegacyStoryboardDecoder()
: base(0)
{
}
public static void Register()
{
// note that this isn't completely correct
AddDecoder<Storyboard>(@"osu file format v", m => new LegacyStoryboardDecoder());
AddDecoder<Storyboard>(@"[Events]", m => new LegacyStoryboardDecoder());
SetFallbackDecoder<Storyboard>(() => new LegacyStoryboardDecoder());
}
protected override void ParseStreamInto(LineBufferedReader stream, Storyboard storyboard)
{
this.storyboard = storyboard;
base.ParseStreamInto(stream, storyboard);
}
protected override void ParseLine(Storyboard storyboard, Section section, string line)
{
line = StripComments(line);
switch (section)
{
case Section.Events:
handleEvents(line);
return;
case Section.Variables:
handleVariables(line);
return;
}
base.ParseLine(storyboard, section, line);
}
private void handleEvents(string line)
{
var depth = 0;
foreach (char c in line)
{
if (c == ' ' || c == '_')
depth++;
else
break;
}
line = line.Substring(depth);
decodeVariables(ref line);
string[] split = line.Split(',');
if (depth == 0)
{
storyboardSprite = null;
if (!Enum.TryParse(split[0], out LegacyEventType type))
throw new InvalidDataException($@"Unknown event type: {split[0]}");
switch (type)
{
case LegacyEventType.Video:
{
var offset = Parsing.ParseInt(split[1]);
var filename = CleanFilename(split[2]);
storyboard.GetLayer("Video").Add(new StoryboardVideo(filename, offset));
break;
}
case LegacyEventType.Sprite:
{
var layer = parseLayer(split[1]);
var origin = parseOrigin(split[2]);
var path = CleanFilename(split[3]);
var x = Parsing.ParseFloat(split[4], Parsing.MAX_COORDINATE_VALUE);
var y = Parsing.ParseFloat(split[5], Parsing.MAX_COORDINATE_VALUE);
storyboardSprite = new StoryboardSprite(path, origin, new Vector2(x, y));
storyboard.GetLayer(layer).Add(storyboardSprite);
break;
}
case LegacyEventType.Animation:
{
var layer = parseLayer(split[1]);
var origin = parseOrigin(split[2]);
var path = CleanFilename(split[3]);
var x = Parsing.ParseFloat(split[4], Parsing.MAX_COORDINATE_VALUE);
var y = Parsing.ParseFloat(split[5], Parsing.MAX_COORDINATE_VALUE);
var frameCount = Parsing.ParseInt(split[6]);
var frameDelay = Parsing.ParseDouble(split[7]);
var loopType = split.Length > 8 ? (AnimationLoopType)Enum.Parse(typeof(AnimationLoopType), split[8]) : AnimationLoopType.LoopForever;
storyboardSprite = new StoryboardAnimation(path, origin, new Vector2(x, y), frameCount, frameDelay, loopType);
storyboard.GetLayer(layer).Add(storyboardSprite);
break;
}
case LegacyEventType.Sample:
{
var time = Parsing.ParseDouble(split[1]);
var layer = parseLayer(split[2]);
var path = CleanFilename(split[3]);
var volume = split.Length > 4 ? Parsing.ParseFloat(split[4]) : 100;
storyboard.GetLayer(layer).Add(new StoryboardSampleInfo(path, time, (int)volume));
break;
}
}
}
else
{
if (depth < 2)
timelineGroup = storyboardSprite?.TimelineGroup;
var commandType = split[0];
switch (commandType)
{
case "T":
{
var triggerName = split[1];
var startTime = split.Length > 2 ? Parsing.ParseDouble(split[2]) : double.MinValue;
var endTime = split.Length > 3 ? Parsing.ParseDouble(split[3]) : double.MaxValue;
var groupNumber = split.Length > 4 ? Parsing.ParseInt(split[4]) : 0;
timelineGroup = storyboardSprite?.AddTrigger(triggerName, startTime, endTime, groupNumber);
break;
}
case "L":
{
var startTime = Parsing.ParseDouble(split[1]);
var loopCount = Parsing.ParseInt(split[2]);
timelineGroup = storyboardSprite?.AddLoop(startTime, loopCount);
break;
}
default:
{
if (string.IsNullOrEmpty(split[3]))
split[3] = split[2];
var easing = (Easing)Parsing.ParseInt(split[1]);
var startTime = Parsing.ParseDouble(split[2]);
var endTime = Parsing.ParseDouble(split[3]);
switch (commandType)
{
case "F":
{
var startValue = Parsing.ParseFloat(split[4]);
var endValue = split.Length > 5 ? Parsing.ParseFloat(split[5]) : startValue;
timelineGroup?.Alpha.Add(easing, startTime, endTime, startValue, endValue);
break;
}
case "S":
{
var startValue = Parsing.ParseFloat(split[4]);
var endValue = split.Length > 5 ? Parsing.ParseFloat(split[5]) : startValue;
timelineGroup?.Scale.Add(easing, startTime, endTime, startValue, endValue);
break;
}
case "V":
{
var startX = Parsing.ParseFloat(split[4]);
var startY = Parsing.ParseFloat(split[5]);
var endX = split.Length > 6 ? Parsing.ParseFloat(split[6]) : startX;
var endY = split.Length > 7 ? Parsing.ParseFloat(split[7]) : startY;
timelineGroup?.VectorScale.Add(easing, startTime, endTime, new Vector2(startX, startY), new Vector2(endX, endY));
break;
}
case "R":
{
var startValue = Parsing.ParseFloat(split[4]);
var endValue = split.Length > 5 ? Parsing.ParseFloat(split[5]) : startValue;
timelineGroup?.Rotation.Add(easing, startTime, endTime, MathUtils.RadiansToDegrees(startValue), MathUtils.RadiansToDegrees(endValue));
break;
}
case "M":
{
var startX = Parsing.ParseFloat(split[4]);
var startY = Parsing.ParseFloat(split[5]);
var endX = split.Length > 6 ? Parsing.ParseFloat(split[6]) : startX;
var endY = split.Length > 7 ? Parsing.ParseFloat(split[7]) : startY;
timelineGroup?.X.Add(easing, startTime, endTime, startX, endX);
timelineGroup?.Y.Add(easing, startTime, endTime, startY, endY);
break;
}
case "MX":
{
var startValue = Parsing.ParseFloat(split[4]);
var endValue = split.Length > 5 ? Parsing.ParseFloat(split[5]) : startValue;
timelineGroup?.X.Add(easing, startTime, endTime, startValue, endValue);
break;
}
case "MY":
{
var startValue = Parsing.ParseFloat(split[4]);
var endValue = split.Length > 5 ? Parsing.ParseFloat(split[5]) : startValue;
timelineGroup?.Y.Add(easing, startTime, endTime, startValue, endValue);
break;
}
case "C":
{
var startRed = Parsing.ParseFloat(split[4]);
var startGreen = Parsing.ParseFloat(split[5]);
var startBlue = Parsing.ParseFloat(split[6]);
var endRed = split.Length > 7 ? Parsing.ParseFloat(split[7]) : startRed;
var endGreen = split.Length > 8 ? Parsing.ParseFloat(split[8]) : startGreen;
var endBlue = split.Length > 9 ? Parsing.ParseFloat(split[9]) : startBlue;
timelineGroup?.Colour.Add(easing, startTime, endTime,
new Color4(startRed / 255f, startGreen / 255f, startBlue / 255f, 1),
new Color4(endRed / 255f, endGreen / 255f, endBlue / 255f, 1));
break;
}
case "P":
{
var type = split[4];
switch (type)
{
case "A":
timelineGroup?.BlendingParameters.Add(easing, startTime, endTime, BlendingParameters.Additive, startTime == endTime ? BlendingParameters.Additive : BlendingParameters.Inherit);
break;
case "H":
timelineGroup?.FlipH.Add(easing, startTime, endTime, true, startTime == endTime);
break;
case "V":
timelineGroup?.FlipV.Add(easing, startTime, endTime, true, startTime == endTime);
break;
}
break;
}
default:
throw new InvalidDataException($@"Unknown command type: {commandType}");
}
break;
}
}
}
}
private string parseLayer(string value) => Enum.Parse(typeof(LegacyStoryLayer), value).ToString();
private Anchor parseOrigin(string value)
{
var origin = (LegacyOrigins)Enum.Parse(typeof(LegacyOrigins), value);
switch (origin)
{
case LegacyOrigins.TopLeft:
return Anchor.TopLeft;
case LegacyOrigins.TopCentre:
return Anchor.TopCentre;
case LegacyOrigins.TopRight:
return Anchor.TopRight;
case LegacyOrigins.CentreLeft:
return Anchor.CentreLeft;
case LegacyOrigins.Centre:
return Anchor.Centre;
case LegacyOrigins.CentreRight:
return Anchor.CentreRight;
case LegacyOrigins.BottomLeft:
return Anchor.BottomLeft;
case LegacyOrigins.BottomCentre:
return Anchor.BottomCentre;
case LegacyOrigins.BottomRight:
return Anchor.BottomRight;
default:
return Anchor.TopLeft;
}
}
private void handleVariables(string line)
{
var pair = SplitKeyVal(line, '=');
variables[pair.Key] = pair.Value;
}
/// <summary>
/// Decodes any beatmap variables present in a line into their real values.
/// </summary>
/// <param name="line">The line which may contains variables.</param>
private void decodeVariables(ref string line)
{
while (line.IndexOf('$') >= 0)
{
string origLine = line;
foreach (var v in variables)
line = line.Replace(v.Key, v.Value);
if (line == origLine)
break;
}
}
}
}