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made listeners auto-update in SoundEffectInstanceHandler

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Ell 2021-01-27 00:51:15 +01:00
parent c85666502c
commit 182f8eff7a
1 changed files with 21 additions and 13 deletions
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34
MLEM/Misc/SoundEffectInstanceHandler.cs
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@ -13,6 +13,7 @@ namespace MLEM.Misc {
public class SoundEffectInstanceHandler : GameComponent, IEnumerable<SoundEffectInstance> {
private readonly List<Entry> playingSounds = new List<Entry>();
private AudioListener[] listeners;
/// <summary>
/// Creates a new sound effect instance handler with the given settings
@ -21,13 +22,14 @@ namespace MLEM.Misc {
public SoundEffectInstanceHandler(Game game) : base(game) {
}
/// <inheritdoc />
/// <inheritdoc cref="Update()"/>
public override void Update(GameTime gameTime) {
this.Update();
}
/// <summary>
/// Updates this sound effect handler and manages all of the <see cref="SoundEffectInstance"/> objects in it.
/// If <see cref="SetListeners"/> has been called, all sounds will additionally be updated in 3D space.
/// This should be called each update frame.
/// </summary>
public void Update() {
@ -37,10 +39,20 @@ namespace MLEM.Misc {
entry.Instance.Stop(true);
entry.OnStopped?.Invoke(entry.Instance);
this.playingSounds.RemoveAt(i);
} else {
entry.TryApply3D(this.listeners);
}
}
}
/// <summary>
/// Sets the collection <see cref="AudioListener"/> objects that should be listening to the sounds in this handler in 3D space.
/// If there are one or more listeners, this handler applies 3d effects to all sound effect instances that have been added to this handler along with an <see cref="AudioEmitter"/> in <see cref="Update(Microsoft.Xna.Framework.GameTime)"/> automatically.
/// </summary>
public void SetListeners(params AudioListener[] listeners) {
this.listeners = listeners;
}
/// <summary>
/// Pauses all of the sound effect instances that are currently playing
/// </summary>
@ -57,17 +69,6 @@ namespace MLEM.Misc {
entry.Instance.Resume();
}
/// <summary>
/// Applies 3d effects to all sound effect instances that have been added to this handler along with an <see cref="AudioEmitter"/>
/// </summary>
/// <param name="listener">The audio listener that 3d sound should be applied for</param>
public void Apply3D(AudioListener listener) {
foreach (var entry in this.playingSounds) {
if (entry.Emitter != null)
entry.Instance.Apply3D(listener, entry.Emitter);
}
}
/// <summary>
/// Adds a new <see cref="SoundEffectInstance"/> to this handler.
/// This also starts playing the instance.
@ -77,7 +78,9 @@ namespace MLEM.Misc {
/// <param name="emitter">An optional audio emitter with which 3d sound can be applied</param>
/// <returns>The passed instance, for chaining</returns>
public SoundEffectInstance Add(SoundEffectInstance instance, Action<SoundEffectInstance> onStopped = null, AudioEmitter emitter = null) {
this.playingSounds.Add(new Entry(instance, onStopped, emitter));
var entry = new Entry(instance, onStopped, emitter);
entry.TryApply3D(this.listeners);
this.playingSounds.Add(entry);
instance.Play();
return instance;
}
@ -128,6 +131,11 @@ namespace MLEM.Misc {
this.Emitter = emitter;
}
public void TryApply3D(AudioListener[] listeners) {
if (listeners != null && listeners.Length > 0)
this.Instance.Apply3D(listeners, this.Emitter);
}
}
}