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osu-lazer/osu.Game/Rulesets/UI/RulesetInputManager.cs

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// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
using System.Collections.Generic;
using System.Linq;
using osu.Framework.Allocation;
using osu.Framework.Configuration;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Input;
using osu.Framework.Input.Bindings;
using osu.Framework.Timing;
using osu.Game.Configuration;
using osu.Game.Input.Bindings;
using osu.Game.Input.Handlers;
using osu.Game.Screens.Play;
using OpenTK.Input;
namespace osu.Game.Rulesets.UI
{
public abstract class RulesetInputManager<T> : PassThroughInputManager, ICanAttachKeyCounter, IHasReplayHandler
where T : struct
{
public class RulesetKeyBindingContainer : DatabasedKeyBindingInputManager<T>
{
public RulesetKeyBindingContainer(RulesetInfo ruleset, int variant, SimultaneousBindingMode unique)
: base(ruleset, variant, unique)
{
}
}
protected readonly KeyBindingContainer<T> KeyBindingContainer;
protected override Container<Drawable> Content => KeyBindingContainer;
protected RulesetInputManager(RulesetInfo ruleset, int variant, SimultaneousBindingMode unique)
{
InternalChild = KeyBindingContainer = new RulesetKeyBindingContainer(ruleset, variant, unique);
}
#region Action mapping (for replays)
private List<T> lastPressedActions = new List<T>();
protected override void HandleNewState(InputState state)
{
base.HandleNewState(state);
var replayState = state as ReplayInputHandler.ReplayState<T>;
if (replayState == null) return;
// Here we handle states specifically coming from a replay source.
// These have extra action information rather than keyboard keys or mouse buttons.
List<T> newActions = replayState.PressedActions;
foreach (var released in lastPressedActions.Except(newActions))
KeyBindingContainer.TriggerReleased(released);
foreach (var pressed in newActions.Except(lastPressedActions))
KeyBindingContainer.TriggerPressed(pressed);
lastPressedActions = newActions;
}
#endregion
#region IHasReplayHandler
private ReplayInputHandler replayInputHandler;
public ReplayInputHandler ReplayInputHandler
{
get
{
return replayInputHandler;
}
set
{
if (replayInputHandler != null) RemoveHandler(replayInputHandler);
replayInputHandler = value;
UseParentState = replayInputHandler == null;
if (replayInputHandler != null)
AddHandler(replayInputHandler);
}
}
#endregion
#region Clock control
protected override bool ShouldProcessClock => false; // We handle processing the clock ourselves
private ManualClock clock;
private IFrameBasedClock parentClock;
protected override void LoadComplete()
{
base.LoadComplete();
//our clock will now be our parent's clock, but we want to replace this to allow manual control.
parentClock = Clock;
Clock = new FramedClock(clock = new ManualClock
{
CurrentTime = parentClock.CurrentTime,
Rate = parentClock.Rate,
});
}
/// <summary>
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/// Whether we are running up-to-date with our parent clock.
/// If not, we will need to keep processing children until we catch up.
/// </summary>
private bool requireMoreUpdateLoops;
/// <summary>
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/// Whether we are in a valid state (ie. should we keep processing children frames).
/// This should be set to false when the replay is, for instance, waiting for future frames to arrive.
/// </summary>
private bool validState;
protected override bool RequiresChildrenUpdate => base.RequiresChildrenUpdate && validState;
private bool isAttached => replayInputHandler != null && !UseParentState;
private const int max_catch_up_updates_per_frame = 50;
public override bool UpdateSubTree()
{
requireMoreUpdateLoops = true;
validState = true;
int loops = 0;
while (validState && requireMoreUpdateLoops && loops++ < max_catch_up_updates_per_frame)
if (!base.UpdateSubTree())
return false;
return true;
}
protected override void Update()
{
if (parentClock == null) return;
clock.Rate = parentClock.Rate;
clock.IsRunning = parentClock.IsRunning;
if (!isAttached)
{
clock.CurrentTime = parentClock.CurrentTime;
}
else
{
double? newTime = replayInputHandler.SetFrameFromTime(parentClock.CurrentTime);
if (newTime == null)
{
// we shouldn't execute for this time value. probably waiting on more replay data.
validState = false;
return;
}
clock.CurrentTime = newTime.Value;
}
requireMoreUpdateLoops = clock.CurrentTime != parentClock.CurrentTime;
// The manual clock time has changed in the above code. The framed clock now needs to be updated
// to ensure that the its time is valid for our children before input is processed
Clock.ProcessFrame();
// Process input
base.Update();
}
#endregion
#region Setting application (disables etc.)
private Bindable<bool> mouseDisabled;
[BackgroundDependencyLoader]
private void load(OsuConfigManager config)
{
mouseDisabled = config.GetBindable<bool>(OsuSetting.MouseDisableButtons);
}
protected override void TransformState(InputState state)
{
base.TransformState(state);
// we don't want to transform the state if a replay is present (for now, at least).
if (replayInputHandler != null) return;
var mouse = state.Mouse as Framework.Input.MouseState;
if (mouse != null)
{
if (mouseDisabled.Value)
{
mouse.SetPressed(MouseButton.Left, false);
mouse.SetPressed(MouseButton.Right, false);
}
}
}
#endregion
#region Key Counter Attachment
public void Attach(KeyCounterCollection keyCounter)
{
var receptor = new ActionReceptor(keyCounter);
Add(receptor);
keyCounter.SetReceptor(receptor);
keyCounter.AddRange(KeyBindingContainer.DefaultKeyBindings.Select(b => b.GetAction<T>()).Distinct().Select(b => new KeyCounterAction<T>(b)));
}
public class ActionReceptor : KeyCounterCollection.Receptor, IKeyBindingHandler<T>
{
public ActionReceptor(KeyCounterCollection target)
: base(target)
{
}
public bool OnPressed(T action) => Target.Children.OfType<KeyCounterAction<T>>().Any(c => c.OnPressed(action));
public bool OnReleased(T action) => Target.Children.OfType<KeyCounterAction<T>>().Any(c => c.OnReleased(action));
}
#endregion
}
/// <summary>
/// Expose the <see cref="ReplayInputHandler"/> in a capable <see cref="InputManager"/>.
/// </summary>
public interface IHasReplayHandler
{
ReplayInputHandler ReplayInputHandler { get; set; }
}
/// <summary>
/// Supports attaching a <see cref="KeyCounterCollection"/>.
/// Keys will be populated automatically and a receptor will be injected inside.
/// </summary>
public interface ICanAttachKeyCounter
{
void Attach(KeyCounterCollection keyCounter);
}
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}