96 lines
3.4 KiB
C#
96 lines
3.4 KiB
C#
using Unity.VisualScripting;
|
||
/// <summary>
|
||
/// BPM组单元，用于储存对应时间组的物件速度变化，与乐曲相关
|
||
/// </summary>
|
||
public class BPMGroup
|
||
{
|
||
/*关于时间组与BPM变换的机制
|
||
*BPM变换是一种用来完成适应中间有BPM变换的歌曲的一种机制
|
||
*其原理是通过控制当前BPM的基准BPM的比值，使得NoteSpeed得以变化
|
||
*当BPM变换到比原定的数值更大时，那么音符的速度将会更快
|
||
*当BPM变换到比原定的数值更小时，那么音符的速度将会更慢
|
||
*
|
||
*但是将这种变换设置为全局的是不合适的，因此我们从数据上为Note划分组别
|
||
*使得每一个时间组都可以被单独控制
|
||
*我们将在控制器重创建一个列表，统一管理列表中的所有时间组单元
|
||
*在每一个物件被实例化时，它将被传递对应的时间组单元的引用
|
||
*
|
||
*每一个时间组单元通过更新自身存储的NoteSpeed以达到控制Note的效果
|
||
*因为每一个被创建的物件实例都会不断的通过NoteSpeed更新自身位置
|
||
*
|
||
*由于时间组条数通常在100这个数量级以内，选择字典结构去管理是相对合适的
|
||
*/
|
||
|
||
/// <summary>
|
||
/// 当前BPM组的NoteSpeed
|
||
/// </summary>
|
||
public float CurrentNoteSpeed
|
||
{
|
||
get
|
||
{
|
||
if (CurrentBPM == 0) return 0;
|
||
//单位向量*基础速度*音符流速*BPM/基准BPM
|
||
return _noteStream * CurrentBPM * _baseSpeed / _baseBPM;
|
||
}
|
||
}
|
||
private float _noteStream;
|
||
private float _baseSpeed;
|
||
private float _baseBPM;
|
||
/// <summary>
|
||
/// 每拍的时间长度（秒）
|
||
/// </summary>
|
||
public float Beat
|
||
{
|
||
get
|
||
{
|
||
return CurrentBPM > 0 ? 60f / CurrentBPM : 0f;
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 音符相对当前BPM的抵达下落目标所需时间,单位:ms
|
||
/// </summary>
|
||
public float InitializeOffset
|
||
{
|
||
get
|
||
{
|
||
if (CurrentNoteSpeed == 0) return 0;
|
||
//到达目标点的时间
|
||
return TrackLength / CurrentNoteSpeed;
|
||
}
|
||
}
|
||
/// <summary>
|
||
/// 轨道长度,该值应当添加至游戏主控变成玩家偏好设置
|
||
/// </summary>
|
||
private float TrackLength;
|
||
public float CurrentBPM { set; get; }
|
||
public int GroupNum { get; }
|
||
public BPMGroup(float currentBPM, int groupNum, float noteStream, float baseSpeed, float baseBPM, float trackLength)
|
||
{
|
||
CurrentBPM = currentBPM;
|
||
GroupNum = groupNum;
|
||
_noteStream = noteStream;
|
||
_baseSpeed = baseSpeed;
|
||
_baseBPM = baseBPM;
|
||
TrackLength = trackLength;
|
||
}
|
||
public void UpdatePlayerSetting(float noteStream, float baseSpeed, float baseBPM, float trackLength)
|
||
{
|
||
_noteStream = noteStream;
|
||
_baseSpeed = baseSpeed;
|
||
_baseBPM = baseBPM;
|
||
TrackLength = trackLength;
|
||
}
|
||
public override string ToString()
|
||
{
|
||
return $"BPMGroup [Group: {GroupNum}]\n" +
|
||
$"BPM: {CurrentBPM}\n" +
|
||
$"Beat: {Beat:F3}s\n" +
|
||
$"NoteSpeed: {CurrentNoteSpeed:F2}\n" +
|
||
$"Stream: {_noteStream}\n" +
|
||
$"BaseSpeed: {_baseSpeed}\n" +
|
||
$"BaseBPM: {_baseBPM}\n" +
|
||
$"InitializeOffset:{InitializeOffset}\n"+
|
||
$"当前速度:{CurrentNoteSpeed}"
|
||
;
|
||
}
|
||
} |