// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using OpenTK;
using OpenTK.Graphics;
using osu.Framework.Graphics;
using osu.Framework.IO.File;
using osu.Game.Storyboards;
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());
}
protected override void ParseStreamInto(StreamReader 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;
while (line.StartsWith(" ", StringComparison.Ordinal) || line.StartsWith("_", StringComparison.Ordinal))
{
++depth;
line = line.Substring(1);
}
decodeVariables(ref line);
string[] split = line.Split(',');
if (depth == 0)
{
storyboardSprite = null;
EventType type;
if (!Enum.TryParse(split[0], out type))
throw new InvalidDataException($@"Unknown event type {split[0]}");
switch (type)
{
case EventType.Sprite:
{
var layer = parseLayer(split[1]);
var origin = parseOrigin(split[2]);
var path = cleanFilename(split[3]);
var x = float.Parse(split[4], NumberFormatInfo.InvariantInfo);
var y = float.Parse(split[5], NumberFormatInfo.InvariantInfo);
storyboardSprite = new StoryboardSprite(path, origin, new Vector2(x, y));
storyboard.GetLayer(layer).Add(storyboardSprite);
}
break;
case EventType.Animation:
{
var layer = parseLayer(split[1]);
var origin = parseOrigin(split[2]);
var path = cleanFilename(split[3]);
var x = float.Parse(split[4], NumberFormatInfo.InvariantInfo);
var y = float.Parse(split[5], NumberFormatInfo.InvariantInfo);
var frameCount = int.Parse(split[6]);
var frameDelay = double.Parse(split[7], NumberFormatInfo.InvariantInfo);
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 EventType.Sample:
{
var time = double.Parse(split[1], CultureInfo.InvariantCulture);
var layer = parseLayer(split[2]);
var path = cleanFilename(split[3]);
var volume = split.Length > 4 ? float.Parse(split[4], CultureInfo.InvariantCulture) : 100;
storyboard.GetLayer(layer).Add(new StoryboardSample(path, time, 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 ? double.Parse(split[2], CultureInfo.InvariantCulture) : double.MinValue;
var endTime = split.Length > 3 ? double.Parse(split[3], CultureInfo.InvariantCulture) : double.MaxValue;
var groupNumber = split.Length > 4 ? int.Parse(split[4]) : 0;
timelineGroup = storyboardSprite?.AddTrigger(triggerName, startTime, endTime, groupNumber);
}
break;
case "L":
{
var startTime = double.Parse(split[1], CultureInfo.InvariantCulture);
var loopCount = int.Parse(split[2]);
timelineGroup = storyboardSprite?.AddLoop(startTime, loopCount);
}
break;
default:
{
if (string.IsNullOrEmpty(split[3]))
split[3] = split[2];
var easing = (Easing)int.Parse(split[1]);
var startTime = double.Parse(split[2], CultureInfo.InvariantCulture);
var endTime = double.Parse(split[3], CultureInfo.InvariantCulture);
switch (commandType)
{
case "F":
{
var startValue = float.Parse(split[4], CultureInfo.InvariantCulture);
var endValue = split.Length > 5 ? float.Parse(split[5], CultureInfo.InvariantCulture) : startValue;
timelineGroup?.Alpha.Add(easing, startTime, endTime, startValue, endValue);
}
break;
case "S":
{
var startValue = float.Parse(split[4], CultureInfo.InvariantCulture);
var endValue = split.Length > 5 ? float.Parse(split[5], CultureInfo.InvariantCulture) : startValue;
timelineGroup?.Scale.Add(easing, startTime, endTime, new Vector2(startValue), new Vector2(endValue));
}
break;
case "V":
{
var startX = float.Parse(split[4], CultureInfo.InvariantCulture);
var startY = float.Parse(split[5], CultureInfo.InvariantCulture);
var endX = split.Length > 6 ? float.Parse(split[6], CultureInfo.InvariantCulture) : startX;
var endY = split.Length > 7 ? float.Parse(split[7], CultureInfo.InvariantCulture) : startY;
timelineGroup?.Scale.Add(easing, startTime, endTime, new Vector2(startX, startY), new Vector2(endX, endY));
}
break;
case "R":
{
var startValue = float.Parse(split[4], CultureInfo.InvariantCulture);
var endValue = split.Length > 5 ? float.Parse(split[5], CultureInfo.InvariantCulture) : startValue;
timelineGroup?.Rotation.Add(easing, startTime, endTime, MathHelper.RadiansToDegrees(startValue), MathHelper.RadiansToDegrees(endValue));
}
break;
case "M":
{
var startX = float.Parse(split[4], CultureInfo.InvariantCulture);
var startY = float.Parse(split[5], CultureInfo.InvariantCulture);
var endX = split.Length > 6 ? float.Parse(split[6], CultureInfo.InvariantCulture) : startX;
var endY = split.Length > 7 ? float.Parse(split[7], CultureInfo.InvariantCulture) : startY;
timelineGroup?.X.Add(easing, startTime, endTime, startX, endX);
timelineGroup?.Y.Add(easing, startTime, endTime, startY, endY);
}
break;
case "MX":
{
var startValue = float.Parse(split[4], CultureInfo.InvariantCulture);
var endValue = split.Length > 5 ? float.Parse(split[5], CultureInfo.InvariantCulture) : startValue;
timelineGroup?.X.Add(easing, startTime, endTime, startValue, endValue);
}
break;
case "MY":
{
var startValue = float.Parse(split[4], CultureInfo.InvariantCulture);
var endValue = split.Length > 5 ? float.Parse(split[5], CultureInfo.InvariantCulture) : startValue;
timelineGroup?.Y.Add(easing, startTime, endTime, startValue, endValue);
}
break;
case "C":
{
var startRed = float.Parse(split[4], CultureInfo.InvariantCulture);
var startGreen = float.Parse(split[5], CultureInfo.InvariantCulture);
var startBlue = float.Parse(split[6], CultureInfo.InvariantCulture);
var endRed = split.Length > 7 ? float.Parse(split[7], CultureInfo.InvariantCulture) : startRed;
var endGreen = split.Length > 8 ? float.Parse(split[8], CultureInfo.InvariantCulture) : startGreen;
var endBlue = split.Length > 9 ? float.Parse(split[9], CultureInfo.InvariantCulture) : 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?.BlendingMode.Add(easing, startTime, endTime, BlendingMode.Additive, startTime == endTime ? BlendingMode.Additive : BlendingMode.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(StoryLayer), 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;
}
}
private string cleanFilename(string path) => FileSafety.PathStandardise(FileSafety.PathSanitise(path.Trim('\"')));
}
}