public BeatmapInfo(string filename)
{
List <Note> notes;
List <LongNote> lns;
// Load, and parse.
if (File.Exists(filename))
{
if (filename.Split('.')[filename.Split('.').Length - 1] != "osu")
{
throw new InvalidBeatmapException("Unknown file format.");
}
Data = MetadataParser.Parse(filename);
HitObjectParser.Parse(filename, out notes, out lns, Data.Keys);
}
else
{
throw new FileNotFoundException();
}
// Calculate densities.
JenksDensity = DensityCalculator.GetJenksDensity(ref notes, ref lns, Data.Keys);
JenksSpeed = DensityCalculator.GetJenksSpeed(ref notes, ref lns);
// Copy data.
Notes = notes;
LNs = lns;
}
protected override int[] GetTickLocations()
{
double length = Math.Round(Double.Parse(HitObjectParser.GetProperty(id, "pixelLength"), CultureInfo.InvariantCulture), 4);
int sliderruns = Int32.Parse(HitObjectParser.GetProperty(id, "repeat"));
//Only need ticks for one slider length (no repeats needed)
//Also no need for double conversion since TickCount is always divisible by sliderruns
int tickcount = this.GetTickCount() / sliderruns;
double slidervelocity = this.GetSliderVelocity();
double tickrate = Double.Parse(map.GetTag("Difficulty", "SliderTickRate"), CultureInfo.InvariantCulture);
double ticklength = Math.Round(slidervelocity * (100 / tickrate), 4);
if (length <= ticklength)
{
return(new int[0]);
}
Point[] ticklocs = curve.GetTickLocations(ticklength, tickcount);
List <int> xcoords = new List <int>();
foreach (Point i in ticklocs)
{
xcoords.Add(i.IntX());
}
return(xcoords.ToArray());
}
public BeatmapInfo(string filename)
{
List <Note> notes;
List <LongNote> lns;
// Load, and parse.
if (File.Exists(filename))
{
if (filename.Split('.')[filename.Split('.').Length - 1] != "osu")
{
throw new InvalidBeatmapException("Unknown file format.");
}
Data = MetadataParser.Parse(filename);
HitObjectParser.Parse(filename, out notes, out lns, Data.Keys);
}
else
{
throw new FileNotFoundException();
}
// Calculate densities.
var orgDen = DensityCalculator.GetDensity(ref notes, ref lns);
var corDen = DensityCalculator.GetCorrectedDensity(ref notes, ref lns, Data.Keys);
// Copy data.
Notes = notes;
LNs = lns;
MaxDen = orgDen.Item1;
AvgDen = orgDen.Item2;
CorMaxDen = corDen.Item1;
CorAvgDen = corDen.Item2;
}
protected override int[] GetTickLocations()
{
double length = Math.Round(Double.Parse(HitObjectParser.GetProperty(id, "pixelLength"), CultureInfo.InvariantCulture), 4);
double slidervelocity = this.GetSliderVelocity();
double tickrate = Double.Parse(map.GetTag("Difficulty", "SliderTickRate"), CultureInfo.InvariantCulture);
double ticklength = Math.Round(slidervelocity * (100 / tickrate), 4);
if (length <= ticklength)
{
return(new int[0]);
}
List <int> ticks = new List <int>();
//Will represent where the next tick is in the slider
double calclength = ticklength;
//While we haven't fallen off the end of the slider
while (calclength < length)
{
ticks.Add(curve.GetPointAlong(calclength).IntX());
//Move down the slider by a ticklength
calclength += ticklength;
}
return(ticks.ToArray());
}
//Calculates the Milliseconds per Beat at a specified time by searching
//through the entire timing points section
//Timing points inside sliders don't affect the slider itself
protected double GetMpB()
{
int ms = Int32.Parse(HitObjectParser.GetProperty(id, "time"));
//Get all the timing sections of the beatmap
string[] timings = this.map.GetSection("TimingPoints");
//Will hold the relevant timing point
string timingpoint = null;
//Store the index of the timing point just in case we need to iterate backwards later
int index;
//Find the section that applies to the given time
for (index = 0; index < timings.Length; index++)
{
//Split the string by commas to get all the relevant times
string[] attributes = timings[index].Split(',');
//Trim each string just in case
attributes = LibFuncs.TrimStringArray(attributes);
//If the timing point is a higher time, then we want the previous timing section
if (Double.Parse(attributes[0]) > ms)
{
//avoid accessing a negative timing point
if (index == 0)
{
timingpoint = timings[0];
}
else
{
timingpoint = timings[index - 1];
}
break;
}
}
//If the timing point needed is the very last one
if (timingpoint == null)
{
timingpoint = timings[timings.Length - 1];
}
//If the mpb is negative, then we need to search backwards to find a positive one
if (Double.Parse(timingpoint.Split(',')[1], CultureInfo.InvariantCulture) < 0)
{
for (int i = index - 1; i >= 0; i--)
{
//Split the string by commas to get all the relevant times
string[] attributes = timings[i].Split(',');
//Trim each string just in case
attributes = LibFuncs.TrimStringArray(attributes);
if (Double.Parse(attributes[1]) > 0)
{
timingpoint = timings[i];
break;
}
}
}
return(Double.Parse(timingpoint.Split(',')[1], CultureInfo.InvariantCulture));
}
protected override Point GetLastPoint()
{
//Necessary to avoid cases where the pixellength is something like 105.000004005432
int length = Convert.ToInt32(Math.Floor(Double.Parse(HitObjectParser.GetProperty(id, "pixelLength"), CultureInfo.InvariantCulture)));
return(curve.GetPointAlong(length));
}
protected override int[] GetTickLocations()
{
//Necessary to avoid cases where the pixellength is something like 105.000004005432
int length = Convert.ToInt32(Math.Floor(Double.Parse(HitObjectParser.GetProperty(id, "pixelLength"), CultureInfo.InvariantCulture)));
double slidervelocity = this.GetSliderVelocity();
double tickrate = Double.Parse(map.GetTag("Difficulty", "SliderTickRate"), CultureInfo.InvariantCulture);
int ticklength = (int)Math.Round(slidervelocity * (100 / tickrate));
if (length <= ticklength)
{
return(new int[0]);
}
List <int> ticks = new List <int>();
//Will represent where the next tick is in the slider
int calclength = ticklength;
//While we haven't fallen off the end of the slider
while (calclength < length)
{
ticks.Add(curve.GetPointAlong(calclength).IntX());
//Move down the slider by a ticklength
calclength += ticklength;
}
return(ticks.ToArray());
}
public CatmullSlider(string id, Beatmap amap) : base(id, amap)
{
Point initialcoord = new Point();
initialcoord.x = Int32.Parse(HitObjectParser.GetProperty(id, "x"));
initialcoord.y = Int32.Parse(HitObjectParser.GetProperty(id, "y"));
curve = new CatmullCurve(initialcoord, this.controlpoints);
}
public int[] GetHitLocations()
{
//There is only one hit location for a circle, so just return an array
//that holds that hit location
string loc = HitObjectParser.GetProperty(circleid, "X");
return(new int[1] {
Convert.ToInt32(loc)
});
}
public int[] GetHitTimes()
{
//There is only one hit time for a circle, so just return an array
//that holds that hit time
string time = HitObjectParser.GetProperty(circleid, "time");
return(new int[1] {
Convert.ToInt32(time)
});
}
//TODO: Throw error if somethings messed up with the timing section
//Calculates the slider velocity at a specified time using the default
//velocity and the relevant timing section
//Timing points inside sliders don't affect the slider itself
protected double GetSliderVelocity()
{
int ms = Int32.Parse(HitObjectParser.GetProperty(id, "time"));
//Get the default slider velocity of the beatmap
double slidervelocity = Double.Parse(map.GetTag("Difficulty", "SliderMultiplier"), CultureInfo.InvariantCulture);
//Get all the timing sections of the beatmap
string[] timings = this.map.GetSection("TimingPoints");
//Will hold the relevant timing point
string timingpoint = null;
//Find the section that applies to the given time
for (int i = 0; i < timings.Length; i++)
{
//Split the string by commas to get all the relevant times
string[] attributes = timings[i].Split(',');
//Trim each string just in case
attributes = LibFuncs.TrimStringArray(attributes);
//If the timing point is a higher time, then we want the previous timing section
if (Double.Parse(attributes[0]) > ms)
{
//avoid accessing a negative timing point
if (i == 0)
{
timingpoint = timings[0];
}
else
{
timingpoint = timings[i - 1];
}
break;
}
}
//If the timing point needed is the very last one
if (timingpoint == null)
{
timingpoint = timings[timings.Length - 1];
}
string[] properties = timingpoint.Split(',');
//If the offset is positive, then there is no slider multiplication
if (Double.Parse(properties[1], CultureInfo.InvariantCulture) > 0)
{
return(slidervelocity);
}
//Otherwise the slider multiplier is 100 / abs(offset)
else
{
double offset = Double.Parse(properties[1], CultureInfo.InvariantCulture);
return(slidervelocity * (100 / Math.Abs(offset)));
}
}
private void handleGeneral(Sheetmusic sheetmusic, string line) // general區塊
{
var pair = splitKeyVal(line, ':');
var metadata = sheetmusic.SheetmusicInfo.Metadata;
switch (pair.Key)
{
case @"AudioFilename":
metadata.AudioFile = pair.Value;
break;
case @"AudioLeadIn":
sheetmusic.SheetmusicInfo.AudioLeadIn = int.Parse(pair.Value);
break;
case @"PreviewTime":
metadata.PreviewTime = int.Parse(pair.Value);
break;
//case @"Countdown":
// sheetmusic.SheetmusicInfo.Countdown = int.Parse(pair.Value) == 1;
// break;
//case @"SampleSet":
// defaultSampleBank = (LegacySampleBank)Enum.Parse(typeof(LegacySampleBank), pair.Value);
// break;
//case @"SampleVolume":
// defaultSampleVolume = int.Parse(pair.Value);
// break;
//case @"StackLeniency":
// beatmap.BeatmapInfo.StackLeniency = float.Parse(pair.Value, NumberFormatInfo.InvariantInfo);
// break;
case @"Mode":
sheetmusic.SheetmusicInfo.RulesetID = int.Parse(pair.Value);
switch (sheetmusic.SheetmusicInfo.RulesetID)
{
case 0:
parser = new Base.Rulesets.Straight.Rulesets.Objects.Parsers.ConvertHitObjectParser();
break;
}
break;
//case @"LetterboxInBreaks":
// beatmap.BeatmapInfo.LetterboxInBreaks = int.Parse(pair.Value) == 1;
// break;
//case @"SpecialStyle":
// beatmap.BeatmapInfo.SpecialStyle = int.Parse(pair.Value) == 1;
// break;
//case @"WidescreenStoryboard":
// beatmap.BeatmapInfo.WidescreenStoryboard = int.Parse(pair.Value) == 1;
// break;
}
}
//Get the correct type of hitobject to put into the hitobject variable
public GenericHitObject(string id, Beatmap map)
{
HitObjectType objecttype = HitObjectParser.GetHitObjectType(id);
if (objecttype == HitObjectType.Circle)
{
hitobject = new Circle(id);
}
else if (objecttype == HitObjectType.Slider)
{
string slidertype = HitObjectParser.GetProperty(id, "slidertype");
if (slidertype == "L")
{
hitobject = new LinearSlider(id, map);
}
//Special behavior is needed for passthrough sliders
else if (slidertype == "P")
{
//Treat the slider differently depending on the number of control points
string[] sliderpoints = HitObjectParser.GetProperty(id, "controlpoints").Split('|');
if (sliderpoints.Length == 1)
{
hitobject = new LinearSlider(id, map);
}
else if (sliderpoints.Length == 2)
{
hitobject = new PassthroughSlider(id, map);
}
else
{
hitobject = new BezierSlider(id, map);
}
}
else if (slidertype == "B")
{
hitobject = new BezierSlider(id, map);
}
else if (slidertype == "C")
{
hitobject = new CatmullSlider(id, map);
}
}
else if (objecttype == HitObjectType.Spinner)
{
hitobject = new Spinner();
}
else
{
throw new ArgumentException("Error: id is invalid");
}
}
//Constructs a slider given an id
//The beatmap given is the beatmap that the slider resides in
//Used to make calculations related to timing
protected GenericSlider(string tempid, Beatmap amap)
{
id = tempid;
map = amap;
//Checks that the hitobject given is actually a slider
if (HitObjectParser.GetHitObjectType(id) != HitObjectType.Slider)
{
throw new ArgumentException("Hitobject provided to slider class is not a slider");
}
//Gets the control points of the slider in a formatted array of Points
controlpoints = FormatControlPoints();
}
//Calculated the same regardless of slider type, but depends on GetTickLocations and GetLastPoint
public int[] GetHitLocations()
{
List <int> hitpoints = new List <int>();
List <int> ticklocs = new List <int>();
//Subtracting 1 returns the actual number of repeats
int repeats = Int32.Parse(HitObjectParser.GetProperty(id, "repeat")) - 1;
//Get the initial hit point of the slider
//Split into three lines for readibility
Point initialcoord = new Point();
initialcoord.x = Int32.Parse(HitObjectParser.GetProperty(id, "x"));
initialcoord.y = Int32.Parse(HitObjectParser.GetProperty(id, "y"));
//Get the first and last x-coordinates of the slider
int beginpoint = initialcoord.IntX();
ticklocs.AddRange(this.GetTickLocations());
int endpoint = this.GetLastPoint().IntX();
hitpoints.Add(beginpoint);
hitpoints.AddRange(ticklocs);
hitpoints.Add(endpoint);
if (repeats > 0)
{
for (int i = 1; i <= repeats; i++)
{
ticklocs.Reverse();
hitpoints.AddRange(ticklocs);
/// Add the endpoint or the beginpoint depending on whether
/// the slider is going forwards or backwards (repeat is even
/// or odd)
//even
if (i % 2 == 0)
{
hitpoints.Add(endpoint);
}
//odd
else
{
hitpoints.Add(beginpoint);
}
}
}
//Return the hitpoints
return(hitpoints.ToArray());
}
public PassthroughSlider(string id, Beatmap amap) : base(id, amap)
{
if (controlpoints.Length != 2)
{
throw new ArgumentException("Error: Passthrough slider does not have 2 control points\n" +
"controlpoints.Length=" + controlpoints.Length);
}
Point initialcoord = new Point();
initialcoord.x = Int32.Parse(HitObjectParser.GetProperty(id, "x"));
initialcoord.y = Int32.Parse(HitObjectParser.GetProperty(id, "y"));
double length = Math.Round(Double.Parse(HitObjectParser.GetProperty(id, "pixelLength"), CultureInfo.InvariantCulture), 4);
curve = new CircleCurve(initialcoord, controlpoints[0], controlpoints[1], length);
}
//Uses the given list of control points to construct a list of curves
//to account for red points
public LinearSlider(string id, Beatmap amap) : base(id, amap)
{
//Get the initial hit point of the slider
//Split into three lines for readibility
Point initialcoord = new Point();
initialcoord.x = Int32.Parse(HitObjectParser.GetProperty(id, "x"));
initialcoord.y = Int32.Parse(HitObjectParser.GetProperty(id, "y"));
//List<Point> curvepoints = new List<Point>();
List <LinearCurve> accumulatedcurves = new List <LinearCurve>();
//Normal linear slider
if (controlpoints.Length == 1)
{
accumulatedcurves.Add(new LinearCurve(initialcoord, controlpoints[0]));
}
else
{
List <Point> allcontrolpoints = new List <Point>();
//Add first point only if it's not repeated in the control points (old maps)
if (initialcoord.IntX() != controlpoints[0].IntX() || initialcoord.IntY() != controlpoints[0].IntY())
{
allcontrolpoints.Add(initialcoord);
}
allcontrolpoints.AddRange(controlpoints);
Point[][] curvepoints = LibFuncs.SplitPointList(allcontrolpoints.ToArray());
foreach (Point[] curve in curvepoints)
{
if (curve.Length > 2)
{
for (int i = 1; i < curve.Length; i++)
{
accumulatedcurves.Add(new LinearCurve(curve[i - 1], curve[i]));
}
}
else
{
accumulatedcurves.Add(new LinearCurve(curve[0], curve[1]));
}
}
}
curves = accumulatedcurves.ToArray();
}
protected override Point GetLastPoint()
{
//Necessary to avoid cases where the pixellength is something like 105.000004005432
int length = Convert.ToInt32(Math.Floor(Double.Parse(HitObjectParser.GetProperty(id, "pixelLength"), CultureInfo.InvariantCulture)));
//how many steps to travel through the curve
//divide by curves.Length to scale this with the number of curves
double steps = length * 2 / curves.Length;
//how much to increment t by with every loop
double increment = 1 / steps;
//how much along the curve we have traveled so far
double travelled = 0;
//where to get the next point on a given curve
//assign increment to get the next intended point
double t = increment;
Point prev = new Point();
prev.x = Int32.Parse(HitObjectParser.GetProperty(id, "x"));
prev.y = Int32.Parse(HitObjectParser.GetProperty(id, "y"));
//which curve we are looking at
int curvenumber = 0;
while (curvenumber < curves.Length)
{
Point next = curves[curvenumber].Bezier(t);
double distance = Dewlib.GetDistance(prev.x, prev.y, next.x, next.y);
travelled += distance;
prev = next;
if (travelled >= length)
{
return(next);
}
t += increment;
if (t > 1)
{
curvenumber++;
t -= 1;
}
}
//If we reached the end of the slider without accumulated sliderlength distance,
//just assume that the last point is the last point of the bezier curve
return(curves[curves.Length - 1].Bezier(1));
}
protected override int[] GetTickLocations()
{
//Necessary to avoid cases where the pixellength is something like 105.000004005432
int length = Convert.ToInt32(Math.Floor(Double.Parse(HitObjectParser.GetProperty(id, "pixelLength"), CultureInfo.InvariantCulture)));
double slidervelocity = this.GetSliderVelocity();
double tickrate = Double.Parse(map.GetTag("Difficulty", "SliderTickRate"), CultureInfo.InvariantCulture);
int ticklength = (int)Math.Round(slidervelocity * (100 / tickrate));
List <int> ticks = new List <int>();
if (length <= ticklength)
{
return(new int[0]);
}
//How far along a single curve we have traveled
//Initialize to ticklength to make the while loop work for the first curve
int accumulatedlength = ticklength;
//How much along the entire slider we have traveled
//Necessary to keep track of in case there are more curves than the slider length allows
int totalaccumulatedlength = ticklength;
//Special case for last curve, hence the curves.Length-1
for (int i = 0; i < curves.Length; i++)
{
//Keep traveling down the curve accumulating ticks until we reach the length of the curve
while (accumulatedlength < curves[i].DistanceBetween())
{
ticks.Add(curves[i].GetPointAlong(accumulatedlength).IntX());
accumulatedlength += ticklength;
totalaccumulatedlength += ticklength;
//>= since ticks can't appear on slider ends
if (totalaccumulatedlength >= length)
{
//Don't want to bother with trying to break out of two loops
return(ticks.ToArray());
}
}
accumulatedlength -= (int)Math.Round(curves[i].DistanceBetween());
}
return(ticks.ToArray());
}
//Formats a string of control points into an array of points
//Does NOT include the first hit point
private Point[] FormatControlPoints()
{
//Control point string will look like: B|380:120|332:96|332:96|304:124
//Gets a list of strings containing each control point by splitting up the control point string
string[] sliderpoints = HitObjectParser.GetProperty(id, "controlpoints").Split('|');
List <Point> temppoints = new List <Point>();
//Parse each point as a Point object
foreach (string point in sliderpoints)
{
string[] pair = point.Split(':');
temppoints.Add(new Point(Double.Parse(pair[0], CultureInfo.InvariantCulture), Double.Parse(pair[1], CultureInfo.InvariantCulture)));
}
//Return this list of points as an array
return(temppoints.ToArray());
}
//Gets the number of slider ticks, including slider repeats (but not slider ends)
//Calculated the same regardless of slider type
protected int GetTickCount()
{
double slidervelocity = this.GetSliderVelocity();
double tickrate = Double.Parse(map.GetTag("Difficulty", "SliderTickRate"), CultureInfo.InvariantCulture);
double length = Math.Round(Double.Parse(HitObjectParser.GetProperty(id, "pixelLength"), CultureInfo.InvariantCulture), 4);
int sliderruns = Int32.Parse(HitObjectParser.GetProperty(id, "repeat"));
double ticklength = Math.Round(slidervelocity * (100 / tickrate), 4);
int tickcount = (int)Math.Floor(length / ticklength);
if (Math.Abs(length % ticklength) < Double.Epsilon)
{
tickcount--;
}
return(tickcount * sliderruns);
}
//Gets the number of slider ticks, including slider repeats (but not slider ends)
//Calculated the same regardless of slider type
protected int GetTickCount()
{
double slidervelocity = this.GetSliderVelocity();
double tickrate = Double.Parse(map.GetTag("Difficulty", "SliderTickRate"), CultureInfo.InvariantCulture);
//Necessary to avoid cases where the pixellength is something like 105.000004005432
int length = Convert.ToInt32(Math.Floor(Double.Parse(HitObjectParser.GetProperty(id, "pixelLength"), CultureInfo.InvariantCulture)));
int sliderruns = Int32.Parse(HitObjectParser.GetProperty(id, "repeat"));
int ticklength = (int)Math.Round(slidervelocity * (100 / tickrate));
int tickcount = length / ticklength;
if (length % ticklength == 0)
{
tickcount--;
}
return(tickcount * sliderruns);
}
protected override Point GetLastPoint()
{
double length = Math.Round(Double.Parse(HitObjectParser.GetProperty(id, "pixelLength"), CultureInfo.InvariantCulture), 4);
//Only one curve
if (curves.Length == 1)
{
return(curves[0].GetPointAlong(length));
}
else
{
double accumulatedlength = 0;
//Special behavior is needed for the last curve, hence the curves.Length-1
for (int i = 0; i < curves.Length - 1; i++)
{
accumulatedlength += curves[i].DistanceBetween();
}
double lengthdifference = length - accumulatedlength;
return(curves[curves.Length - 1].GetPointAlong(lengthdifference));
}
}
//Calculates the Milliseconds per Beat at a specified time by searching
//through the entire timing points section
//Timing points inside sliders don't affect the slider itself
protected double GetMpB()
{
int ms = Int32.Parse(HitObjectParser.GetProperty(id, "time"));
//Get all the timing sections of the beatmap
string[] timings = this.map.GetSection("TimingPoints");
//Just in case there is only one timing point
string timingpoint = timings[0];
//Find the section that applies to the given time
for (int i = 0; i < timings.Length; i++)
{
//Split the string by commas to get all the relevant times
string[] attributes = timings[i].Split(',');
//Trim each string just in case
attributes = Dewlib.TrimStringArray(attributes);
if (Int32.Parse(attributes[0]) > ms)
{
break;
}
else if (Double.Parse(attributes[1], CultureInfo.InvariantCulture) > 0)
{
timingpoint = timings[i];
}
else
{
continue;
}
}
if (timingpoint == null)
{
throw new Exception("Error, no relevant timing point\nms=" + ms);
}
string[] properties = timingpoint.Split(',');
return(Double.Parse(properties[1], CultureInfo.InvariantCulture));
}
protected override Point GetLastPoint()
{
//Necessary to avoid cases where the pixellength is something like 105.000004005432
int length = Convert.ToInt32(Math.Floor(Double.Parse(HitObjectParser.GetProperty(id, "pixelLength"), CultureInfo.InvariantCulture)));
//Only one curve
if (curves.Length == 1)
{
return(curves[0].GetPointAlong(length));
}
else
{
double accumulatedlength = 0;
//Special behavior is needed for the last curve, hence the curves.Length-1
for (int i = 0; i < curves.Length - 1; i++)
{
accumulatedlength += curves[i].DistanceBetween();
}
double lengthdifference = length - accumulatedlength;
return(curves[curves.Length - 1].GetPointAlong(lengthdifference));
}
}
//Uses the given list of control points to construct a list of bezier curves
//to account for red points
public BezierSlider(string id, Beatmap amap) : base(id, amap)
{
//Get the initial hit point of the slider
//Split into three lines for readibility
Point initialcoord = new Point();
initialcoord.x = Int32.Parse(HitObjectParser.GetProperty(id, "x"));
initialcoord.y = Int32.Parse(HitObjectParser.GetProperty(id, "y"));
List <BezierCurve> accumulatedcurves = new List <BezierCurve>();
List <Point> allcontrolpoints = new List <Point>();
allcontrolpoints.Add(initialcoord);
allcontrolpoints.AddRange(controlpoints);
Point[][] curvepoints = LibFuncs.SplitPointList(allcontrolpoints.ToArray());
foreach (Point[] curve in curvepoints)
{
accumulatedcurves.Add(new BezierCurve(curve));
}
curves = accumulatedcurves.ToArray();
}
//Calculated the same regardless of slider type so can already be implemented
public int[] GetHitTimes()
{
List <int> times = new List <int>();
//When slider starts
int starttime = Int32.Parse(HitObjectParser.GetProperty(id, "time"));
double MpB = this.GetMpB();
//How long the slider is in existance (without considering repeats)
//slidertime = (pixellength / (slidervelocity * 100)) * MillisecondsPerBeat
//(Order of operations is important kids! Otherwise you end up with slidertimes of 5000000 :o)
int slidertime = Convert.ToInt32((Double.Parse(HitObjectParser.GetProperty(id, "pixellength"), CultureInfo.InvariantCulture) / (this.GetSliderVelocity() * 100)) * MpB);
//How long each tick is apart from each other
//ticktime = MillisecondsPerBeat / tickrate
int ticktime = Convert.ToInt32(MpB / Double.Parse(map.GetTag("difficulty", "slidertickrate"), CultureInfo.InvariantCulture));
//How many times the slider runs
int sliderruns = Int32.Parse(HitObjectParser.GetProperty(id, "repeat"));
//How many ticks are in the slider (without repeats)
//This is because later we use tickcount to tell how many times to add a time
//for a given slider run
int tickcount = this.GetTickCount() / sliderruns;
//The time from the last tick to the slider end
//If there are no ticks, then this just become slidertime
int sliderenddiff = (slidertime) - (tickcount * ticktime);
//Keeps track of what time we are at when travelling through the slider
int currenttime = starttime;
for (int runnum = 1; runnum <= sliderruns; runnum++)
{
if (runnum == 1)
{
//Add the initial slider hit
times.Add(currenttime);
//Add the tick times
for (int ticknum = 0; ticknum < tickcount; ticknum++)
{
currenttime += ticktime;
times.Add(currenttime);
}
//Add the slider end
currenttime += sliderenddiff;
times.Add(currenttime);
}
else if (runnum % 2 == 0)
{
//Add the first tick after the slider end
currenttime += sliderenddiff;
times.Add(currenttime);
//Don't skip the first tick since we need to include the slider head too
for (int ticknum = 0; ticknum < tickcount; ticknum++)
{
currenttime += ticktime;
times.Add(currenttime);
}
}
else if (runnum % 2 == 1)
{
//Add the tick times
for (int ticknum = 0; ticknum < tickcount; ticknum++)
{
currenttime += ticktime;
times.Add(currenttime);
}
//Add the slider end
currenttime += sliderenddiff;
times.Add(currenttime);
}
}
return(times.ToArray());
}
protected override Beatmap ParseFile(TextReader stream)
{
var beatmap = new Beatmap
{
HitObjects = new List <HitObject>(),
ControlPoints = new List <ControlPoint>(),
ComboColors = new List <Color4>(),
BeatmapInfo = new BeatmapInfo
{
Metadata = new BeatmapMetadata(),
BaseDifficulty = new BaseDifficulty(),
},
};
HitObjectParser parser = null;
var section = Section.None;
string line;
while (true)
{
line = stream.ReadLine();
if (line == null)
{
break;
}
if (string.IsNullOrEmpty(line))
{
continue;
}
if (line.StartsWith(@"osu file format v"))
{
continue;
}
if (line.StartsWith(@"[") && line.EndsWith(@"]"))
{
if (!Enum.TryParse(line.Substring(1, line.Length - 2), out section))
{
throw new InvalidDataException($@"Unknown osu section {line}");
}
continue;
}
string val = line, key = null;
if (section != Section.Events && section != Section.TimingPoints && section != Section.HitObjects)
{
key = val.Remove(val.IndexOf(':')).Trim();
val = val.Substring(val.IndexOf(':') + 1).Trim();
}
switch (section)
{
case Section.General:
handleGeneral(beatmap, key, val);
parser = Ruleset.GetRuleset(beatmap.BeatmapInfo.Mode).CreateHitObjectParser();
break;
case Section.Editor:
handleEditor(beatmap, key, val);
break;
case Section.Metadata:
handleMetadata(beatmap, key, val);
break;
case Section.Difficulty:
handleDifficulty(beatmap, key, val);
break;
case Section.Events:
handleEvents(beatmap, val);
break;
case Section.TimingPoints:
handleTimingPoints(beatmap, val);
break;
case Section.Colours:
handleColours(beatmap, key, val);
break;
case Section.HitObjects:
var obj = parser?.Parse(val);
if (obj != null)
{
obj.SetDefaultsFromBeatmap(beatmap);
beatmap.HitObjects.Add(obj);
}
break;
}
}
return(beatmap);
}
protected override void ParseFile(StreamReader stream, Sheetmusic sheetmusic) // 解碼
{
sheetmusic.SheetmusicInfo.SheetmusicVersion = sheetmusicVersion;
Section section = Section.None;
bool hasCustomColours = false;
string line;
while ((line = stream.ReadLine()) != null)
{
if (line.Equals(" ") || line.Equals(""))
{
continue;
}
if (line.StartsWith("//"))
{
continue;
}
if (line.StartsWith(@"straight file format v"))
{
sheetmusic.SheetmusicInfo.SheetmusicVersion = int.Parse(line.Substring(13));
continue;
}
if (line.StartsWith(@"[") && line.EndsWith(@"]"))
{
section = (Section)Enum.Parse(typeof(Section), line.Substring(1, line.Length - 2));
continue;
}
switch (section)
{
case Section.General:
handleGeneral(sheetmusic, line);
break;
case Section.Metadata:
handleMetadata(sheetmusic, line);
break;
case Section.Difficulty:
handleDifficulty(sheetmusic, line);
break;
//case Section.Events:
// handleEvents(sheetmusic, line, ref storyboardSprite, ref timelineGroup);
// break;
case Section.TimingPoints:
handleTimingPoints(sheetmusic, line);
break;
//case Section.Colours:
// handleColours(sheetmusic, line, ref hasCustomColours);
// break;
case Section.HitObjects:
// If the ruleset wasn't specified, assume the osu!standard ruleset.
if (parser == null)
{
parser = new Rulesets.Objects.Parsers.ConvertHitObjectParser();
}
var obj = parser.Parse(line);
if (obj != null)
{
sheetmusic.HitObjects.Add(obj);
}
break;
//case Section.Variables:
// handleVariables(line);
// break;
}
}
foreach (var hitObject in sheetmusic.HitObjects)
{
hitObject.ApplyDefaults(sheetmusic.ControlPointInfo, sheetmusic.SheetmusicInfo.BaseDifficulty);
}
}
protected override int[] GetTickLocations()
{
double length = Math.Round(Double.Parse(HitObjectParser.GetProperty(id, "pixelLength"), CultureInfo.InvariantCulture), 4);
int sliderruns = Int32.Parse(HitObjectParser.GetProperty(id, "repeat"));
//Only need ticks for one slider length (no repeats needed)
//Also no need for double conversion since TickCount is always divisible by sliderruns
int tickcount = this.GetTickCount() / sliderruns;
double slidervelocity = this.GetSliderVelocity();
double tickrate = Double.Parse(map.GetTag("Difficulty", "SliderTickRate"), CultureInfo.InvariantCulture);
double ticklength = Math.Round(slidervelocity * (100 / tickrate), 4);
if (length <= ticklength)
{
return(new int[0]);
}
List <Point> ticks = new List <Point>();
//how many steps to travel through the curve
//divide by curves.Length to scale this with the number of curves
double steps = length * 2 / curves.Length;
//how much to increment t by with every loop
double increment = 1 / steps;
//how much along the curve we have traveled so far
double travelled = 0;
//where to get the next point on a given curve
//assign increment to get the next intended point
double t = increment;
Point prev = new Point();
prev.x = Int32.Parse(HitObjectParser.GetProperty(id, "x"));
prev.y = Int32.Parse(HitObjectParser.GetProperty(id, "y"));
//which curve we are looking at
int curvenumber = 0;
while (curvenumber < curves.Length)
{
Point next = curves[curvenumber].Bezier(t);
double distance = LibFuncs.GetDistance(prev.x, prev.y, next.x, next.y);
travelled += distance;
prev = next;
if (travelled >= ticklength)
{
ticks.Add(next);
travelled = 0;
if (ticks.Count == tickcount)
{
break;
}
}
t += increment;
if (t > 1)
{
curvenumber++;
t -= 1;
}
}
if (travelled > 0)
{
throw new Exception("Error, too many ticks to get in bezier curve, travelled=" + travelled);
}
List <int> locations = new List <int>();
foreach (Point i in ticks)
{
locations.Add(i.IntX());
}
return(locations.ToArray());
}