OppaiSharp
OppaiSharp is a C# port of oppai-ng by Francesco149, based on its Java port Koohii. It allows you to calculate star ratings and PP values for any osu!standard map, just like oppai(-ng) does.
It is "licensed" under the Unlicense, so you're free to do whatever you want with it. But giving me or Francesco149 a bit of credit doesn't hurt, and I would appreciate it if you didn't claim it as your own :)
Warning
This repo is not up-to-date with the latest changes to the PP and SR algorithm, and has been superseded by the official implementation at ppy/osu. Please switch to using it.
Example usage
v2:
//create a StreamReader for your beatmap
byte[] data = new WebClient().DownloadData("https://osu.ppy.sh/osu/774965");
var stream = new MemoryStream(data, false);
var reader = new StreamReader(stream);
//read a beatmap
var beatmap = Beatmap.Read(reader);
//calculate star ratings for HDDT
Mods mods = Mods.Hidden | Mods.DoubleTime;
var diff = new DiffCalc().Calc(beatmap, mods);
Console.WriteLine(string.Format("Star rating: {0:F2} (aim stars: {1:F2}, speed stars: {2:F2})",
diff.Total, diff.Aim, diff.Speed));
//calculate the PP for a play on this map
//the play has no misses or 50's, so we don't specify them
var pp = new PPv2(new PPv2Parameters(beatmap, diff, c100: 8, mods: mods));
Console.WriteLine(string.Format("Play is worth {0:F2}pp ({1:F2} aim pp, {2:F2} acc pp, {3:F2} speed pp) " +
"and has an accuracy of {4:F2}%",
pp.Total, pp.Aim, pp.Acc, pp.Speed, pp.ComputedAccuracy.Value() * 100));v1 (old):
//create a StreamReader for your beatmap
byte[] data = new WebClient().DownloadData("https://osu.ppy.sh/osu/774965");
var stream = new MemoryStream(data, false);
var reader = new StreamReader(stream);
//parse the beatmap
var beatmap = new Parser().Map(reader);
//calculate star ratings for HDDT
Mods mods = Mods.Hidden | Mods.DoubleTime;
var stars = new DiffCalc().Calc(beatmap, mods);
Console.WriteLine(string.Format("Star rating: {0:F2} (aim stars: {1:F2}, speed stars: {2:F2})",
stars.Total, stars.Aim, stars.Speed));
//calculate the PP value for a play
var pp = new PPv2(new PPv2Parameters {
Beatmap = beatmap,
AimStars = stars.Aim,
SpeedStars = stars.Speed,
Mods = mods,
Count100 = 8,
Count50 = 0,
CountMiss = 0,
});
Console.WriteLine(string.Format("Play is worth {0:F2}pp ({1:F2} aim pp, {2:F2} acc pp, {3:F2} speed pp) " +
"and has an accuracy of {4:F2}%",
pp.Total, pp.Aim, pp.Acc, pp.Speed, pp.ComputedAccuracy.Value() * 100));