Trigger Refactor (#39034)

Content.Shared/Trigger/Systems/EmitSoundOnTriggerSystem.cs

@@ -0,0 +1,55 @@
+using Content.Shared.Trigger.Components.Effects;
+using Robust.Shared.Audio.Systems;
+using Robust.Shared.Network;
+
+namespace Content.Shared.Trigger.Systems;
+
+public sealed class EmitSoundOnTriggerSystem : EntitySystem
+{
+    [Dependency] private readonly INetManager _netMan = default!;
+    [Dependency] private readonly SharedAudioSystem _audio = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<EmitSoundOnTriggerComponent, TriggerEvent>(OnTrigger);
+    }
+
+    private void OnTrigger(Entity<EmitSoundOnTriggerComponent> ent, ref TriggerEvent args)
+    {
+        if (args.Key != null && !ent.Comp.KeysIn.Contains(args.Key))
+            return;
+
+        var target = ent.Comp.TargetUser ? args.User : ent.Owner;
+
+        if (target == null)
+            return;
+
+        args.Handled |= TryEmitSound(ent, target.Value, args.User);
+    }
+
+    private bool TryEmitSound(Entity<EmitSoundOnTriggerComponent> ent, EntityUid target, EntityUid? user = null)
+    {
+        if (ent.Comp.Sound == null)
+            return false;
+
+        if (ent.Comp.Positional)
+        {
+            var coords = Transform(target).Coordinates;
+            if (ent.Comp.Predicted)
+                _audio.PlayPredicted(ent.Comp.Sound, coords, user);
+            else if (_netMan.IsServer)
+                _audio.PlayPvs(ent.Comp.Sound, coords);
+        }
+        else
+        {
+            if (ent.Comp.Predicted)
+                _audio.PlayPredicted(ent.Comp.Sound, target, user);
+            else if (_netMan.IsServer)
+                _audio.PlayPvs(ent.Comp.Sound, target);
+        }
+
+        return true;
+    }
+}