mirror of https://github.com/ppy/osu
105 lines
3.3 KiB
C#
105 lines
3.3 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using System;
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using System.Linq;
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using osu.Framework.Bindables;
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using osu.Game.Graphics;
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using osuTK.Graphics;
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namespace osu.Game.Screens.Edit
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{
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public class BindableBeatDivisor : BindableInt
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{
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public static readonly int[] VALID_DIVISORS = { 1, 2, 3, 4, 6, 8, 12, 16 };
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public BindableBeatDivisor(int value = 1)
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: base(value)
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{
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}
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public void Next() => Value = VALID_DIVISORS[Math.Min(VALID_DIVISORS.Length - 1, Array.IndexOf(VALID_DIVISORS, Value) + 1)];
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public void Previous() => Value = VALID_DIVISORS[Math.Max(0, Array.IndexOf(VALID_DIVISORS, Value) - 1)];
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public override int Value
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{
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get => base.Value;
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set
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{
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if (!VALID_DIVISORS.Contains(value))
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{
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// If it doesn't match, value will be 0, but will be clamped to the valid range via DefaultMinValue
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value = Array.FindLast(VALID_DIVISORS, d => d < value);
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}
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base.Value = value;
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}
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}
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protected override int DefaultMinValue => VALID_DIVISORS.First();
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protected override int DefaultMaxValue => VALID_DIVISORS.Last();
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protected override int DefaultPrecision => 1;
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protected override Bindable<int> CreateInstance() => new BindableBeatDivisor();
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/// <summary>
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/// Retrieves the appropriate colour for a beat divisor.
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/// </summary>
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/// <param name="beatDivisor">The beat divisor.</param>
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/// <param name="colours">The set of colours.</param>
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/// <returns>The applicable colour from <paramref name="colours"/> for <paramref name="beatDivisor"/>.</returns>
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public static Color4 GetColourFor(int beatDivisor, OsuColour colours)
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{
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switch (beatDivisor)
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{
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case 1:
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return Color4.White;
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case 2:
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return colours.Red;
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case 4:
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return colours.Blue;
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case 8:
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return colours.Yellow;
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case 16:
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return colours.PurpleDark;
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case 3:
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return colours.Purple;
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case 6:
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return colours.YellowDark;
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case 12:
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return colours.YellowDarker;
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default:
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return Color4.Red;
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}
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}
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/// <summary>
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/// Retrieves the applicable divisor for a specific beat index.
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/// </summary>
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/// <param name="index">The 0-based beat index.</param>
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/// <param name="beatDivisor">The beat divisor.</param>
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/// <returns>The applicable divisor.</returns>
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public static int GetDivisorForBeatIndex(int index, int beatDivisor)
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{
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int beat = index % beatDivisor;
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foreach (var divisor in BindableBeatDivisor.VALID_DIVISORS)
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{
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if ((beat * divisor) % beatDivisor == 0)
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return divisor;
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}
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return 0;
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}
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}
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}
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