mirror of
https://github.com/ppy/osu.git
synced 2024-12-15 05:02:55 +08:00
172 lines
5.6 KiB
C#
172 lines
5.6 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
|
|
// See the LICENCE file in the repository root for full licence text.
|
|
|
|
#nullable disable
|
|
|
|
using System.Linq;
|
|
using osu.Framework.Bindables;
|
|
using osu.Game.Graphics;
|
|
using osu.Game.Screens.Edit.Compose.Components;
|
|
using osuTK;
|
|
using osuTK.Graphics;
|
|
|
|
namespace osu.Game.Screens.Edit
|
|
{
|
|
public class BindableBeatDivisor : BindableInt
|
|
{
|
|
public static readonly int[] PREDEFINED_DIVISORS = { 1, 2, 3, 4, 6, 8, 12, 16 };
|
|
|
|
public Bindable<BeatDivisorPresetCollection> ValidDivisors { get; } = new Bindable<BeatDivisorPresetCollection>(BeatDivisorPresetCollection.COMMON);
|
|
|
|
public BindableBeatDivisor(int value = 1)
|
|
: base(value)
|
|
{
|
|
ValidDivisors.BindValueChanged(_ => updateBindableProperties(), true);
|
|
BindValueChanged(_ => ensureValidDivisor());
|
|
}
|
|
|
|
/// <summary>
|
|
/// Set a divisor, updating the valid divisor range appropriately.
|
|
/// </summary>
|
|
/// <param name="divisor">The intended divisor.</param>
|
|
public void SetArbitraryDivisor(int divisor)
|
|
{
|
|
// If the current valid divisor range doesn't contain the proposed value, attempt to find one which does.
|
|
if (!ValidDivisors.Value.Presets.Contains(divisor))
|
|
{
|
|
if (BeatDivisorPresetCollection.COMMON.Presets.Contains(divisor))
|
|
ValidDivisors.Value = BeatDivisorPresetCollection.COMMON;
|
|
else if (BeatDivisorPresetCollection.TRIPLETS.Presets.Contains(divisor))
|
|
ValidDivisors.Value = BeatDivisorPresetCollection.TRIPLETS;
|
|
else
|
|
ValidDivisors.Value = BeatDivisorPresetCollection.Custom(divisor);
|
|
}
|
|
|
|
Value = divisor;
|
|
}
|
|
|
|
private void updateBindableProperties()
|
|
{
|
|
ensureValidDivisor();
|
|
|
|
MinValue = ValidDivisors.Value.Presets.Min();
|
|
MaxValue = ValidDivisors.Value.Presets.Max();
|
|
}
|
|
|
|
private void ensureValidDivisor()
|
|
{
|
|
if (!ValidDivisors.Value.Presets.Contains(Value))
|
|
Value = 1;
|
|
}
|
|
|
|
public void Next()
|
|
{
|
|
var presets = ValidDivisors.Value.Presets;
|
|
Value = presets.Cast<int?>().SkipWhile(preset => preset != Value).ElementAtOrDefault(1) ?? presets[0];
|
|
}
|
|
|
|
public void Previous()
|
|
{
|
|
var presets = ValidDivisors.Value.Presets;
|
|
Value = presets.Cast<int?>().TakeWhile(preset => preset != Value).LastOrDefault() ?? presets[^1];
|
|
}
|
|
|
|
protected override int DefaultPrecision => 1;
|
|
|
|
public override void BindTo(Bindable<int> them)
|
|
{
|
|
// bind to valid divisors first (if applicable) to ensure correct transfer of the actual divisor.
|
|
if (them is BindableBeatDivisor otherBeatDivisor)
|
|
ValidDivisors.BindTo(otherBeatDivisor.ValidDivisors);
|
|
|
|
base.BindTo(them);
|
|
}
|
|
|
|
protected override Bindable<int> CreateInstance() => new BindableBeatDivisor();
|
|
|
|
/// <summary>
|
|
/// Retrieves the appropriate colour for a beat divisor.
|
|
/// </summary>
|
|
/// <param name="beatDivisor">The beat divisor.</param>
|
|
/// <param name="colours">The set of colours.</param>
|
|
/// <returns>The applicable colour from <paramref name="colours"/> for <paramref name="beatDivisor"/>.</returns>
|
|
public static Color4 GetColourFor(int beatDivisor, OsuColour colours)
|
|
{
|
|
switch (beatDivisor)
|
|
{
|
|
case 1:
|
|
return Color4.White;
|
|
|
|
case 2:
|
|
return colours.Red;
|
|
|
|
case 4:
|
|
return colours.Blue;
|
|
|
|
case 8:
|
|
return colours.Yellow;
|
|
|
|
case 16:
|
|
return colours.PurpleDark;
|
|
|
|
case 3:
|
|
return colours.Purple;
|
|
|
|
case 6:
|
|
return colours.YellowDark;
|
|
|
|
case 12:
|
|
return colours.YellowDarker;
|
|
|
|
default:
|
|
return Color4.Red;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Get a relative display size for the specified divisor.
|
|
/// </summary>
|
|
/// <param name="beatDivisor">The beat divisor.</param>
|
|
/// <returns>A relative size which can be used to display ticks.</returns>
|
|
public static Vector2 GetSize(int beatDivisor)
|
|
{
|
|
switch (beatDivisor)
|
|
{
|
|
case 1:
|
|
case 2:
|
|
return new Vector2(0.6f, 0.9f);
|
|
|
|
case 3:
|
|
case 4:
|
|
return new Vector2(0.5f, 0.8f);
|
|
|
|
case 6:
|
|
case 8:
|
|
return new Vector2(0.4f, 0.7f);
|
|
|
|
default:
|
|
return new Vector2(0.3f, 0.6f);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Retrieves the applicable divisor for a specific beat index.
|
|
/// </summary>
|
|
/// <param name="index">The 0-based beat index.</param>
|
|
/// <param name="beatDivisor">The beat divisor.</param>
|
|
/// <returns>The applicable divisor.</returns>
|
|
public static int GetDivisorForBeatIndex(int index, int beatDivisor)
|
|
{
|
|
int beat = index % beatDivisor;
|
|
|
|
foreach (int divisor in PREDEFINED_DIVISORS)
|
|
{
|
|
if ((beat * divisor) % beatDivisor == 0)
|
|
return divisor;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
}
|