osu/osu.Game/Overlays/Mods/UserModSelectOverlay.cs

52 lines
2.0 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.
using System.Collections.Generic;
using System.Linq;
using osu.Game.Rulesets.Mods;
using osu.Game.Utils;
namespace osu.Game.Overlays.Mods
{
public class UserModSelectOverlay : ModSelectOverlay
{
public UserModSelectOverlay(OverlayColourScheme colourScheme = OverlayColourScheme.Green)
: base(colourScheme)
{
}
protected override ModColumn CreateModColumn(ModType modType) => new UserModColumn(modType, false);
protected override IReadOnlyList<Mod> ComputeNewModsFromSelection(IReadOnlyList<Mod> oldSelection, IReadOnlyList<Mod> newSelection)
{
var addedMods = newSelection.Except(oldSelection);
var removedMods = oldSelection.Except(newSelection);
IEnumerable<Mod> modsAfterRemoval = newSelection.Except(removedMods).ToList();
// the preference is that all new mods should override potential incompatible old mods.
// in general that's a bit difficult to compute if more than one mod is added at a time,
// so be conservative and just remove all mods that aren't compatible with any one added mod.
foreach (var addedMod in addedMods)
{
if (!ModUtils.CheckCompatibleSet(modsAfterRemoval.Append(addedMod), out var invalidMods))
modsAfterRemoval = modsAfterRemoval.Except(invalidMods);
modsAfterRemoval = modsAfterRemoval.Append(addedMod).ToList();
}
return modsAfterRemoval.ToList();
}
private class UserModColumn : ModColumn
{
public UserModColumn(ModType modType, bool allowIncompatibleSelection)
: base(modType, allowIncompatibleSelection)
{
}
protected override ModPanel CreateModPanel(ModState modState) => new IncompatibilityDisplayingModPanel(modState);
}
}
}