bms parser

RhythmKata/Assets/SteamVR/Input/Editor/Resources.meta → RhythmKata/Assets/Resources.meta

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RhythmKata/Assets/Scenes/PlayEngineScene.unity.meta

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RhythmKata/Assets/Scripts/BmsImporter.cs

+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEditor.Experimental.AssetImporters;
+using System.IO;
+
+[ScriptedImporter(1, "bms")]
+public class BmsImporter : ScriptedImporter
+{
+    public override void OnImportAsset(AssetImportContext ctx)
+    {
+        var textAsset = new TextAsset(File.ReadAllText(ctx.assetPath));
+
+        ctx.AddObjectToAsset(ctx.assetPath, textAsset);
+        ctx.SetMainObject(textAsset);
+    }
+}

RhythmKata/Assets/Scripts/BmsImporter.cs.meta

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RhythmKata/Assets/SteamVR/Resources.meta → RhythmKata/Assets/Scripts/Core.meta

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RhythmKata/Assets/Scripts/Core/BMS.cs

+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using UnityEngine;
+
+class BMS
+{
+    // metadata
+
+    public string title;
+    public double bpm;
+    public string genre;
+    public string author;
+
+    public List<BmsNote> notes = new List<BmsNote>();
+
+    public Level ToLevel()
+    {
+        return new Level();
+    }
+}
+
+class BmsNote
+{
+    public string num;
+    public string lane;
+    public double barTime;
+}
+
+class BmsParser
+{
+    private static char[] SEP_NEWLINE = { '\n' };
+    private static char[] SEP_SPACE = { ' ' };
+    private static char[] SEP_COLON = { ':' };
+
+    private static Regex RX_DATALINE = new Regex(@"#[0-9]{5}");
+
+    public BMS Parse(string raw)
+    {
+        var lines = raw.Split(SEP_NEWLINE);
+
+        var bms = new BMS();
+
+        foreach (var line in lines)
+        {
+            // metadata
+            if (line.StartsWith("#TITLE"))
+                bms.title = line.Substring(line.IndexOf(' ') + 1);
+
+            if (line.StartsWith("#GENRE"))
+                bms.genre = line.Substring(line.IndexOf(' ') + 1);
+
+            if (line.StartsWith("#BPM"))
+                bms.bpm = double.Parse(line.Substring(line.IndexOf(' ') + 1));
+
+            if (line.StartsWith("#ARTIST"))
+                bms.author = line.Substring(line.IndexOf(' ') + 1);
+
+            // data lane
+            if (RX_DATALINE.IsMatch(line))
+            {
+                var bar = int.Parse(line.Substring(1, 3));
+                var lane = line.Substring(4, 2);
+                var data = line.Substring(7).Trim();
+
+                // no support for variable bar length or bpm yet
+                if ((data.Length & 1) == 1 || data.Contains("."))
+                {
+                    // ignore these lines
+                }
+
+                var denominator = data.Length / 2;
+
+                // process notes in the bar
+                for (int i = 0; i < data.Length; i += 2)
+                {
+                    var num = line.Substring(i, 2);
+                    var barTime = bar + i / (double)denominator;
+
+                    // ignore empty notes
+                    if (num != "00")
+                    {
+                        var note = new BmsNote();
+
+                        note.num = num;
+                        note.lane = lane;
+                        note.barTime = barTime;
+
+                        bms.notes.Add(note);
+                    }
+                }
+            }
+        }
+
+        Debug.Log(bms.author);
+        Debug.Log(bms.bpm);
+        Debug.Log(bms.title);
+        Debug.Log(bms.genre);
+        return bms;
+    }
+}
\ No newline at end of file

RhythmKata/Assets/Scripts/Core/BMS.cs.meta

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RhythmKata/Assets/Scripts/Core/Level.cs

+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+class Level
+{
+}

RhythmKata/Assets/Scripts/Core/Level.cs.meta

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RhythmKata/Assets/Scripts/PlayEngine.cs

+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class PlayEngine : MonoBehaviour
+{
+    public void Awake()
+    {
+        loadAndPlay("Level/test");
+    }
+    public void loadAndPlay(string assetPath)
+    {
+        Debug.Log(string.Format("LOADING LEVEL: {0}", assetPath));
+
+        var raw = Resources.Load<TextAsset>(assetPath);
+        var bms = new BmsParser().Parse(raw.text);
+        var level = bms.ToLevel();
+    }
+}

RhythmKata/Assets/Scripts/PlayEngine.cs.meta

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RhythmKata/Assets/SteamVR_Resources/Resources.meta

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