Merge pull request #99 from neogeek/feature/csharp-song-class

[feat] Added new song class to C# libraries.

Author: neogeek

RhythmGameUtilities/Structs/Song.cs

@@ -0,0 +1,74 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace RhythmGameUtilities
+{
+
+    public class Song
+    {
+
+        private readonly Dictionary<string, KeyValuePair<string, string[]>[]> _sections;
+
+        public Dictionary<string, string> metaData { get; }
+
+        public int resolution { get; }
+
+        public Tempo[] tempoChanges { get; private set; }
+
+        public TimeSignature[] timeSignatureChanges { get; }
+
+        public Dictionary<Difficulty, Note[]> difficulties { get; private set; }
+
+        public BeatBar[] beatBars { get; private set; }
+
+        public Song(string contents)
+        {
+            _sections = Parsers.ParseSectionsFromChart(contents);
+
+            metaData = Parsers.ParseMetaDataFromChartSection(_sections
+                .First(section => section.Key == NamedSection.Song)
+                .Value);
+
+            resolution = int.Parse(metaData["Resolution"]);
+
+            tempoChanges = Parsers.ParseTempoChangesFromChartSection(_sections
+                .First(section => section.Key == NamedSection.SyncTrack)
+                .Value);
+
+            timeSignatureChanges = Parsers.ParseTimeSignatureChangesFromChartSection(_sections[NamedSection.SyncTrack]);
+
+            difficulties = Enum.GetValues(typeof(Difficulty))
+                .Cast<Difficulty>()
+                .Where(difficulty => _sections.ToDictionary(item => item.Key, item => item.Value)
+                    .ContainsKey($"{difficulty}Single"))
+                .ToDictionary(difficulty => difficulty,
+                    difficulty => Parsers.ParseNotesFromChartSection(_sections[$"{difficulty}Single"]));
+
+            beatBars = Utilities.CalculateBeatBars(tempoChanges, includeHalfNotes : true);
+        }
+
+        public void RecalculateBeatBarsWithSongLength(float songLength)
+        {
+            var lastTick = Utilities.ConvertSecondsToTicks(songLength, resolution, tempoChanges, timeSignatureChanges);
+
+            tempoChanges = Parsers.ParseTempoChangesFromChartSection(_sections
+                .First(section => section.Key == NamedSection.SyncTrack)
+                .Value);
+
+            tempoChanges = tempoChanges.Concat(new Tempo[]
+                {
+                    new()
+                    {
+                        Position = Utilities.RoundUpToTheNearestMultiplier(lastTick, resolution),
+                        BPM = tempoChanges.Last().BPM
+                    }
+                })
+                .ToArray();
+
+            beatBars = Utilities.CalculateBeatBars(tempoChanges, includeHalfNotes : true);
+        }
+
+    }
+
+}

UnityPackage/Samples~/SampleSong (URP)/Scripts/CommonUtilities.cs

@@ -0,0 +1,46 @@
+using System.IO;
+using System.Threading.Tasks;
+using UnityEngine;
+using UnityEngine.Networking;
+
+namespace RhythmGameUtilities
+{
+
+    public static class CommonUtilities
+    {
+
+        public static async Task<string> LoadTextFileFromPath(string path)
+        {
+            using var request = UnityWebRequest.Get(path);
+
+            request.downloadHandler = new DownloadHandlerBuffer();
+
+            await request.SendWebRequest();
+
+            if (request.result == UnityWebRequest.Result.Success)
+            {
+                return request.downloadHandler.text;
+            }
+
+            throw new FileNotFoundException(request.result.ToString());
+        }
+
+        public static async Task<AudioClip> LoadAudioFileFromPath(string path,
+            AudioType audioType = AudioType.OGGVORBIS)
+        {
+            using var request =
+                UnityWebRequestMultimedia.GetAudioClip(path, audioType);
+
+            await request.SendWebRequest();
+
+            if (request.result == UnityWebRequest.Result.Success)
+            {
+                return DownloadHandlerAudioClip.GetContent(request);
+            }
+
+            throw new FileNotFoundException(request.result.ToString());
+        }
+
+    }
+
+}