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Implement behaviour for classic selection style

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Bartłomiej Dach 2022-06-21 14:24:30 +02:00
parent 234120ff43
commit 7b7b8c1892
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1 changed files with 65 additions and 1 deletions
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66
osu.Game/Overlays/Mods/Input/ClassicModHotkeyHandler.cs
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@ -1,8 +1,13 @@
// 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.
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using osu.Framework.Input.Events;
using osu.Game.Rulesets.Mods;
using osuTK.Input;
namespace osu.Game.Overlays.Mods.Input
{
@ -11,6 +16,65 @@ namespace osu.Game.Overlays.Mods.Input
/// </summary>
public class ClassicModHotkeyHandler : IModHotkeyHandler
{
public bool HandleHotkeyPressed(KeyDownEvent e, IEnumerable<ModState> availableMods) => false; // TODO
private static readonly Dictionary<Key, Type[]> mod_type_lookup = new Dictionary<Key, Type[]>
{
[Key.Q] = new[] { typeof(ModEasy) },
[Key.W] = new[] { typeof(ModNoFail) },
[Key.E] = new[] { typeof(ModHalfTime) },
[Key.A] = new[] { typeof(ModHardRock) },
[Key.S] = new[] { typeof(ModSuddenDeath), typeof(ModPerfect) },
[Key.D] = new[] { typeof(ModDoubleTime), typeof(ModNightcore) },
[Key.F] = new[] { typeof(ModHidden) },
[Key.G] = new[] { typeof(ModFlashlight) },
[Key.Z] = new[] { typeof(ModRelax) },
[Key.V] = new[] { typeof(ModAutoplay), typeof(ModCinema) }
};
public bool HandleHotkeyPressed(KeyDownEvent e, IEnumerable<ModState> availableMods)
{
if (!mod_type_lookup.TryGetValue(e.Key, out var typesToMatch))
return false;
var matchingMods = availableMods.Where(modState => matches(modState, typesToMatch)).ToArray();
if (matchingMods.Length == 0)
return false;
if (matchingMods.Length == 1)
{
matchingMods.Single().Active.Toggle();
return true;
}
// we're assuming that only one mod from the group can be active at a time.
// this is mostly ensured by `IncompatibleMods` definitions, but let's make sure just in case.
Debug.Assert(matchingMods.Count(modState => modState.Active.Value) <= 1);
int currentSelectedIndex = Array.FindIndex(matchingMods, modState => modState.Active.Value);
// `FindIndex` will return -1 if it doesn't find the item.
// this is convenient in the forward direction, since if we add 1 then we'll end up at the first item,
// but less so in the backwards direction.
// for convenience, detect this situation and set the index to one index past the last item.
// this makes it so that if we subtract 1 then we'll end up at the last item again.
if (currentSelectedIndex < 0 && e.ShiftPressed)
currentSelectedIndex = matchingMods.Length;
int indexToSelect = e.ShiftPressed ? currentSelectedIndex - 1 : currentSelectedIndex + 1;
// `currentSelectedIndex` and `indexToSelect` can both be equal to -1 or `matchingMods.Length`.
// if the former is beyond array range, it means nothing was previously selected and so there's nothing to deselect.
// if the latter is beyond array range, it means that either the previous selection was first and we're going backwards,
// or it was last and we're going forwards.
// in either case there is nothing to select.
if (currentSelectedIndex >= 0 && currentSelectedIndex <= matchingMods.Length - 1)
matchingMods[currentSelectedIndex].Active.Value = false;
if (indexToSelect >= 0 && indexToSelect <= matchingMods.Length - 1)
matchingMods[indexToSelect].Active.Value = true;
return true;
}
private static bool matches(ModState modState, Type[] typesToMatch)
=> typesToMatch.Any(typeToMatch => typeToMatch.IsInstanceOfType(modState.Mod));
}
}