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BmsLoader.cs
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BmsLoader.cs
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using System.Text.Json.Nodes;
using CustomAlbums.Data;
using CustomAlbums.Managers;
using CustomAlbums.Utilities;
using Il2Cpp;
using Il2CppAssets.Scripts.GameCore;
using Il2CppAssets.Scripts.GameCore.Managers;
using Il2CppAssets.Scripts.PeroTools.Commons;
using Il2CppAssets.Scripts.PeroTools.Managers;
using Il2CppFormulaBase;
using Il2CppGameLogic;
using Il2CppPeroPeroGames.GlobalDefines;
using Il2CppPeroTools2.Resources;
using Il2CppSpine.Unity;
using UnityEngine;
using static CustomAlbums.Data.BmsStates;
using Animation = Il2CppSpine.Animation;
using Decimal = Il2CppSystem.Decimal;
using Logger = CustomAlbums.Utilities.Logger;
namespace CustomAlbums
{
internal static class BmsLoader
{
private static readonly Dictionary<string, NoteConfigData> NoteData = new();
private static readonly Dictionary<string, Dictionary<string, NoteConfigData>> BossData = new();
private static Decimal _delay;
private static readonly Logger Logger = new(nameof(BmsLoader));
/// <summary>
/// Creates a Bms object from a BMS file.
/// </summary>
/// <param name="stream">MemoryStream of BMS file.</param>
/// <param name="bmsName">Name of BMS score.</param>
/// <returns>Loaded Bms object.</returns>
internal static Bms Load(Stream stream, string bmsName)
{
Logger.Msg($"Loading bms {bmsName}...");
var bpmDict = new Dictionary<string, float>();
var notePercents = new Dictionary<int, JsonObject>();
var dataList = new List<JsonObject>();
var notesArray = new JsonArray();
var info = new JsonObject();
using var streamReader = new StreamReader(stream);
while (streamReader.ReadLine()?.Trim() is { } line)
{
if (string.IsNullOrEmpty(line) || !line.StartsWith("#")) continue;
// Remove # from beginning of line
line = line[1..];
if (line.Contains(' '))
{
// Parse header
var split = line.Split(' ');
var key = split[0];
var value = split[1];
info[key] = value;
if (!key.Contains("BPM")) continue;
var bpmKey = string.IsNullOrEmpty(key[3..]) ? "00" : key[3..];
bpmDict.Add(bpmKey, value.ParseAsFloat());
if (bpmKey != "00") continue;
var freq = 60f / value.ParseAsFloat() * 4f;
var obj = new JsonObject
{
{ "tick", 0f },
{ "freq", freq }
};
dataList.Add(obj);
}
else if (line.Contains(':'))
{
// Parse data field
var split = line.Split(':');
var key = split[0];
var value = split[1];
var beat = key[..3].ParseAsInt();
var typeCode = key.Substring(3, 2);
if (!Bms.Channels.TryGetValue(typeCode, out var type)) continue;
if (type is Bms.ChannelType.SpTimesig)
{
var obj = new JsonObject
{
{ "beat", beat },
{ "percent", value.ParseAsFloat() }
};
notePercents.Add(beat, obj);
}
else
{
var objLength = value.Length / 2;
for (var i = 0; i < objLength; i++)
{
var note = value.Substring(i * 2, 2);
if (note is "00") continue;
var tick = (float)i / objLength + beat;
if (type is Bms.ChannelType.SpBpmDirect or Bms.ChannelType.SpBpmLookup)
{
// Handle BPM changes
var freqDivide = type == Bms.ChannelType.SpBpmLookup &&
bpmDict.TryGetValue(note, out var bpm)
? bpm
: Convert.ToInt32(note, 16);
var freq = 60f / freqDivide * 4f;
var obj = new JsonObject
{
{ "tick", tick },
{ "freq", freq }
};
dataList.Add(obj);
dataList.Sort((l, r) =>
{
var tickL = l["tick"].GetValue<float>();
var tickR = r["tick"].GetValue<float>();
return tickR.CompareTo(tickL);
});
}
else
{
// Parse other note data
var time = 0f; // num3
var totalOffset = 0f; // num4
var data = dataList.FindAll(d => d["tick"].GetValue<float>() < tick);
for (var j = data.Count - 1; j >= 0; j--)
{
var obj = data[j];
var offset = 0f; // num5
var freq = obj["freq"].GetValue<float>(); // num6
if (j - 1 >= 0)
{
var prevObj = data[j - 1];
offset = prevObj["tick"].GetValue<float>() - obj["tick"].GetValue<float>();
}
if (j == 0) offset = tick - obj["tick"].GetValue<float>();
var localOffset = totalOffset; // num7
totalOffset += offset;
var floorOffset = Mathf.FloorToInt(localOffset); // num8
var ceilOffset = Mathf.CeilToInt(totalOffset); // num9
for (var k = floorOffset; k < ceilOffset; k++)
{
var off = 1f; // num10
if (k == floorOffset)
off = k + 1 - localOffset;
if (k == ceilOffset - 1)
off = totalOffset - (ceilOffset - 1);
if (ceilOffset == floorOffset + 1)
off = totalOffset - localOffset;
notePercents.TryGetValue(k, out var node);
var percent = node?["percent"].GetValue<float>() ?? 1f;
time += Mathf.RoundToInt(off * percent * freq / 1E-06f) * 1E-06F;
}
}
var noteObj = new JsonObject
{
{ "time", time },
{ "value", note },
{ "tone", typeCode }
};
notesArray.Add(noteObj);
}
}
}
}
}
var list = notesArray.ToList();
list.Sort((l, r) =>
{
var lTime = l["time"]!.GetValue<float>();
var rTime = r["time"]!.GetValue<float>();
var lTone = l["tone"]!.GetValue<string>();
var rTone = r["tone"]!.GetValue<string>();
// Accurate for note sorting up to 6 decimal places
var lScore = (long)(lTime * 1000000) * 10 + (lTone == "15" ? 0 : 1);
var rScore = (long)(rTime * 1000000) * 10 + (rTone == "15" ? 0 : 1);
return Math.Sign(lScore - rScore);
});
notesArray.Clear();
list.ForEach(notesArray.Add);
var percentsArray = new JsonArray();
notePercents.Values.ToList().ForEach(percentsArray.Add);
var bms = new Bms
{
Info = info,
Notes = notesArray,
NotesPercent = percentsArray,
Md5 = stream.GetHash()
};
bms.Info["NAME"] = bmsName;
bms.Info["NEW"] = true;
if (bms.Info.TryGetPropertyValue("BANNER", out var banner))
bms.Info["BANNER"] = "cover/" + banner;
else
bms.Info["BANNER"] = "cover/none_cover.png";
Logger.Msg($"Loaded bms {bmsName}.");
return bms;
}
/// <summary>
/// Transmutes Bms data into StageInfo data.
/// </summary>
/// <param name="bms">The Bms object to transmute.</param>
/// <returns>The transmuted StageInfo object.</returns>
internal static StageInfo TransmuteData(Bms bms)
{
if (NoteData.Count == 0) InitNoteData();
MusicDataManager.Clear();
_delay = 0;
var noteData = bms.GetNoteData();
Logger.Msg("Got note data");
LoadMusicData(noteData);
MusicDataManager.Sort();
ProcessBossData(bms);
ProcessDelay(bms);
MusicDataManager.Sort();
ProcessGeminis();
// Process the delay for each MusicData
foreach (var mData in MusicDataManager.Data)
{
mData.tick -= _delay;
mData.showTick = Decimal.Round(mData.tick - mData.dt, 2);
if (mData.isLongPressType)
mData.endIndex -= (int)(_delay / (Decimal)0.001f);
}
// Transmute the MusicData to a new StageInfo object
var stageInfo = ScriptableObject.CreateInstance<StageInfo>();
stageInfo.musicDatas = new Il2CppSystem.Collections.Generic.List<MusicData>();
foreach (var musicData in MusicDataManager.Data)
stageInfo.musicDatas.Add(musicData);
stageInfo.delay = _delay;
MusicDataManager.Clear();
return stageInfo;
}
private static void InitNoteData()
{
foreach (var nData in SingletonScriptableObject<NoteDataMananger>.instance.noteDatas)
{
NoteData.TryAdd(nData.uid, nData);
NoteData.TryAdd(Bms.GetNoteDataKey(nData.ibms_id, nData.pathway, nData.speed, nData.scene), nData);
if (nData.GetNoteType() != NoteType.None || string.IsNullOrEmpty(nData.boss_action) ||
nData.boss_action == "0") continue;
BossData.TryAdd(nData.scene, new Dictionary<string, NoteConfigData>());
BossData[nData.scene].TryAdd(nData.boss_action, nData);
}
}
private static void LoadMusicData(JsonArray noteData)
{
short noteId = 1;
foreach (var node in noteData)
{
if (noteId == short.MaxValue)
{
Logger.Warning(
$"Cannot process full chart, there are too many objects. Max objects is {short.MaxValue}.");
break;
}
var configData = node.ToMusicConfigData();
if (configData.time < 0) continue;
// Create a new note for each configData
var newNote = Interop.CreateTypeValue<MusicData>();
newNote.objId = noteId++;
newNote.tick = Decimal.Round(configData.time, 3);
newNote.configData = configData;
newNote.isLongPressEnd = false;
newNote.isLongPressing = false;
if (NoteData.TryGetValue(newNote.configData.note_uid, out var newNoteData))
newNote.noteData = newNoteData;
MusicDataManager.Add(newNote);
// Create ticks for hold notes. If it isn't a hold note, there is no need to continue.
if (!newNote.isLongPressStart) continue;
// Calculate the index in which the hold note ends
var endIndex = (int)(Decimal.Round(
newNote.tick + newNote.configData.length - newNote.noteData.left_great_range -
newNote.noteData.left_perfect_range,
3) / (Decimal)0.001f);
for (var i = 1; i <= newNote.longPressCount; i++)
{
var holdTick = Interop.CreateTypeValue<MusicData>();
holdTick.objId = noteId++;
holdTick.tick = i == newNote.longPressCount
? newNote.tick + newNote.configData.length
: newNote.tick + (Decimal)0.1f * i;
holdTick.configData = newNote.configData;
// ACTUALLY REQUIRED TO WORK
var dataCopy = holdTick.configData;
dataCopy.length = 0;
holdTick.configData = dataCopy;
holdTick.isLongPressing = i != newNote.longPressCount;
holdTick.isLongPressEnd = i == newNote.longPressCount;
holdTick.noteData = newNote.noteData;
holdTick.longPressPTick = newNote.configData.time;
holdTick.endIndex = endIndex;
MusicDataManager.Add(holdTick);
}
}
Logger.Msg("Loaded music data!");
}
private static void ProcessBossData(Bms bms)
{
var scene = bms.Info["GENRE"]?.GetValue<string>() ?? string.Empty;
var bossData = MusicDataManager.Data.Where(mData => mData.isBossNote).ToList();
// If the boss is not used for some reason, no need to process animations.
if (bossData.Count == 0) return;
// Add a boss exit animation if it is missing.
var finalData = bossData[^1];
if (AnimStatesRight[finalData.noteData.boss_action] != BossState.OffScreen)
{
var finalNote = MusicDataManager.Data[^1];
var tick = finalNote.tick;
if (finalNote.isBossNote)
{
var startDelay = Decimal.Round((Decimal)GetStartDelay(finalNote.noteData.prefab_name), 3);
var duration = (Decimal)GetAnimationDuration(scene, finalNote.noteData.boss_action);
tick += Decimal.Round(-startDelay + duration, 3);
}
tick = Decimal.Round(tick + (Decimal)0.1f, 3);
var exitNoteData = BossData[scene]["out"];
var exitConfig = Interop.CreateTypeValue<MusicConfigData>();
exitConfig.note_uid = exitNoteData.uid;
exitConfig.time = tick;
var exitMusicData = Interop.CreateTypeValue<MusicData>();
exitMusicData.objId = 0;
exitMusicData.tick = exitConfig.time;
exitMusicData.configData = exitConfig;
exitMusicData.noteData = exitNoteData;
MusicDataManager.Add(exitMusicData);
bossData.Add(exitMusicData);
Logger.Msg("Added missing boss exit at " + exitConfig.time);
}
// Fix incorrect phase gears
var phaseGearConfig = Interop.CreateTypeValue<NoteConfigData>();
phaseGearConfig.ibms_id = "";
for (var i = 0; i < bossData.Count; i++)
{
var data = bossData[i];
if (data.noteData.GetNoteType() != NoteType.Block) continue;
// Find the next boss animation that is not a gear
var bossAnimAhead = Interop.CreateTypeValue<MusicData>();
bossAnimAhead.configData.time = Decimal.MinValue;
for (var j = i + 1; j < bossData.Count; j++)
{
var dataAhead = bossData[j];
if (dataAhead.noteData.GetNoteType() == NoteType.Block) continue;
bossAnimAhead = dataAhead;
break;
}
MusicData bossAnimBefore;
if (i > 0)
{
bossAnimBefore = bossData[i - 1];
}
else
{
bossAnimBefore = Interop.CreateTypeValue<MusicData>();
bossAnimBefore.configData.time = Decimal.MinValue;
}
var diffToAhead = Math.Abs((float)data.configData.time - (float)bossAnimAhead.configData.time);
var diffToBefore = Math.Abs((float)data.configData.time - (float)bossAnimBefore.configData.time);
var ahead = diffToAhead < diffToBefore;
var stateBehind = i > 0 ? AnimStatesRight[bossAnimBefore.noteData.boss_action] : BossState.OffScreen;
var stateAhead = AnimStatesLeft.TryGetValue(bossAnimAhead.noteData.boss_action, out var state)
? state
: BossState.OffScreen;
var usedState = ahead ? stateAhead : stateBehind;
var correctState = usedState is BossState.Phase1 or BossState.Phase2;
if (!correctState)
{
ahead = !ahead;
usedState = ahead ? stateAhead : stateBehind;
correctState = usedState is BossState.Phase1 or BossState.Phase2;
}
if (!correctState) continue;
if (usedState is not (BossState.Phase1 or BossState.Phase2)) continue;
if ((ahead && AnimStatesLeft[data.noteData.boss_action] == usedState) ||
(!ahead && AnimStatesRight[data.noteData.boss_action] == usedState))
continue;
var phase = usedState == BossState.Phase1 ? 1 : 2;
var noteData = SingletonScriptableObject<NoteDataMananger>.instance.noteDatas;
if (phaseGearConfig.ibms_id != data.noteData.ibms_id
|| phaseGearConfig.pathway != data.noteData.pathway
|| phaseGearConfig.scene != data.noteData.scene
|| phaseGearConfig.speed != data.noteData.speed
|| !phaseGearConfig.boss_action.StartsWith($"boss_far_atk_{phase}"))
foreach (var d in noteData)
{
if (d.ibms_id != data.noteData.ibms_id
|| d.pathway != data.noteData.pathway
|| d.scene != data.noteData.scene
|| d.speed != data.noteData.speed
|| !d.boss_action.StartsWith($"boss_far_atk_{phase}")) continue;
phaseGearConfig = d;
break;
}
var fixedConfigData = Interop.CreateTypeValue<MusicConfigData>();
fixedConfigData.blood = data.configData.blood;
fixedConfigData.id = data.configData.id;
fixedConfigData.length = data.configData.length;
fixedConfigData.note_uid = phaseGearConfig.uid;
fixedConfigData.pathway = data.configData.pathway;
fixedConfigData.time = data.configData.time;
var fixedGear = Interop.CreateTypeValue<MusicData>();
fixedGear.objId = data.objId;
fixedGear.tick = data.tick;
fixedGear.configData = fixedConfigData;
fixedGear.isLongPressEnd = data.isLongPressEnd;
fixedGear.isLongPressing = data.isLongPressing;
fixedGear.noteData = phaseGearConfig;
MusicDataManager.Set(fixedGear.objId, fixedGear);
bossData[i] = fixedGear;
Logger.Msg($"Fixed gear at tick {data.tick}.");
}
// Resolve state changes in list
var bossState = BossState.OffScreen;
for (var i = 0; i < bossData.Count; i++)
{
var anim = bossData[i].noteData.boss_action;
var nextState = AnimStatesLeft[anim];
if (bossState != nextState)
{
var transfer = StateTransferAnims[bossState][nextState];
var transferNoteData = BossData[scene][transfer];
var alignment = TransferAlignment[transfer];
var alignData = alignment == AnimAlignment.Right ? bossData[i] : bossData[i - 1];
var rightDelay = (Decimal)GetStartDelay(bossData[i].noteData.prefab_name);
var leftDelay = i == 0 ? 0 : (Decimal)GetStartDelay(bossData[i - 1].noteData.prefab_name);
var alignDelay = alignment == AnimAlignment.Left ? leftDelay : rightDelay;
var duration = (Decimal)GetAnimationDuration(scene, transfer);
var mConfig = Interop.CreateTypeValue<MusicConfigData>();
mConfig.note_uid = transferNoteData.uid;
mConfig.time = Decimal.Round(alignData.tick - alignDelay - duration * (int)alignment, 3);
var mData = Interop.CreateTypeValue<MusicData>();
mData.tick = mConfig.time;
mData.configData = mConfig;
mData.noteData = transferNoteData;
var tolerance = (Decimal)0.300f;
var fits = alignment switch
{
AnimAlignment.Left => mData.tick + duration < bossData[i].tick - rightDelay + tolerance,
_ => i == 0 || mData.tick > bossData[i - 1].tick - leftDelay
};
if (!fits)
{
bossState = AnimStatesRight[bossData[i].noteData.boss_action];
continue;
}
MusicDataManager.Add(mData);
bossData.Insert(i, mData);
i--;
}
else
{
bossState = AnimStatesRight[bossData[i].noteData.boss_action];
}
}
Logger.Msg("Processed boss animations!");
}
private static void ProcessDelay(Bms bms)
{
var scene = bms.Info["GENRE"]?.GetValue<string>() ?? string.Empty;
var sceneIndex = scene.Split('_')[1].ParseAsInt();
var sceneInfo = Singleton<StageBattleComponent>.instance.sceneInfo;
var delayCache = new Dictionary<string, Decimal>();
for (var i = 0; i < MusicDataManager.Data.Count; i++)
{
var mData = MusicDataManager.Data[i];
if (!string.IsNullOrEmpty(mData.noteData.ibms_id))
{
var type = mData.noteData.GetNoteType();
if (type == NoteType.SceneChange) sceneIndex = sceneInfo[mData.noteData.ibms_id];
var prefabName = mData.noteData.prefab_name;
if (!string.IsNullOrEmpty(prefabName))
{
// If not a pickup type, convert to most recent scene
if (type != NoteType.Hp && type != NoteType.Music)
{
var prefix = prefabName[..2];
if (!new[] { "00", "em", "bo" }.Contains(prefix))
prefabName = prefabName.Remove(0, 2).Insert(0, $"{sceneIndex:D2}");
}
if (!delayCache.ContainsKey(prefabName))
{
var gameObject = ResourcesManager.instance.LoadFromName<GameObject>(prefabName);
if (gameObject != null)
{
var spineActionController = gameObject.GetComponent<SpineActionController>();
delayCache[prefabName] = (Decimal)spineActionController.startDelay;
}
}
if (delayCache.TryGetValue(prefabName, out var delay))
{
mData.dt = delay;
MusicDataManager.Set(i, mData);
}
}
}
var showTick = mData.tick - mData.dt;
_delay = showTick < _delay ? showTick : _delay;
}
// Round delay
_delay = Decimal.Round(_delay, 3);
Logger.Msg("Processed delay!");
}
private static void ProcessGeminis()
{
var geminiCache = new Dictionary<Decimal, List<MusicData>>();
for (var i = 1; i < MusicDataManager.Data.Count; i++)
{
var mData = MusicDataManager.Data[i];
mData.doubleIdx = -1;
MusicDataManager.Set(i, mData);
if (mData.noteData.GetNoteType() != NoteType.Monster && mData.noteData.GetNoteType() != NoteType.Hide)
continue;
if (geminiCache.TryGetValue(mData.tick, out var geminiList))
{
var isNoteGemini = Bms.BmsIds[mData.noteData.ibms_id ?? "00"] == Bms.BmsId.Gemini;
var isTargetGemini = false;
var target = Interop.CreateTypeValue<MusicData>();
foreach (var gemini in geminiList.Where(gemini => mData.isAir != gemini.isAir))
{
target = gemini;
isTargetGemini = Bms.BmsIds[gemini.noteData.ibms_id ?? "00"] == Bms.BmsId.Gemini;
if (isNoteGemini && isTargetGemini) break;
if (!isNoteGemini) break;
}
if (target.objId > 0)
{
mData.isDouble = isNoteGemini && isTargetGemini;
mData.doubleIdx = target.objId;
target.isDouble = isNoteGemini && isTargetGemini;
target.doubleIdx = mData.objId;
MusicDataManager.Set(mData.objId, mData);
MusicDataManager.Set(target.objId, target);
}
}
else
{
geminiCache[mData.tick] = new List<MusicData>();
}
geminiCache[mData.tick].Add(mData);
}
Logger.Msg("Processed geminis!");
}
private static float GetStartDelay(string prefab)
{
return ResourcesManager.instance.LoadFromName<GameObject>(prefab).GetComponent<SpineActionController>()
.startDelay;
}
private static float GetAnimationDuration(string scene, string animation)
{
var resourceName =
Singleton<ConfigManager>.instance.GetConfigStringValue("boss", "scene_name", "boss_name", scene);
var controller = ResourcesManager.instance.LoadFromName<GameObject>(resourceName)
.GetComponent<SpineActionController>();
var animations = controller.gameObject.GetComponent<SkeletonAnimation>().skeletonDataAsset
.GetSkeletonData(true).Animations;
var arr = new SkeletActionData[controller.actionData.Count];
controller.actionData.CopyTo(arr, 0);
var actionData = new List<SkeletActionData>(arr).Find(dd => dd.name == animation);
var animName = animation;
if (actionData is { actionIdx: not null } && actionData.actionIdx.Length != 0)
animName = actionData.actionIdx[0];
return animations.Find((Il2CppSystem.Predicate<Animation>)((Animation a) => a.Name == animName)).Duration;
}
}
}