Fix shuttle audio clipping (#27527)

Changed engine to use grid local-center and very high maxdistance / refdistance values so it's seamless.

Author: metalgearsloth

Content.Server/Shuttles/Systems/ShuttleSystem.FasterThanLight.cs

@@ -406,6 +406,17 @@ private void UpdateFTLStarting(Entity<FTLComponent, ShuttleComponent> entity)
                 clippedAudio.Value.Component.Flags |= AudioFlags.NoOcclusion;
         }
 
+        // Leave audio at the old spot
+        // Just so we don't clip
+        if (fromMapUid != null && TryComp(comp.StartupStream, out AudioComponent? startupAudio))
+        {
+            var clippedAudio = _audio.PlayStatic(_startupSound, Filter.Broadcast(),
+                new EntityCoordinates(fromMapUid.Value, _maps.GetGridPosition(entity.Owner)), true, startupAudio.Params);
+
+            _audio.SetPlaybackPosition(clippedAudio, entity.Comp1.StartupTime);
+            clippedAudio.Value.Component.Flags |= AudioFlags.NoOcclusion;
+        }
+
         // Offset the start by buffer range just to avoid overlap.
         var ftlStart = new EntityCoordinates(ftlMap, new Vector2(_index + width / 2f, 0f) - shuttleCenter);
 

Content.Server/Shuttles/Systems/ShuttleSystem.cs

@@ -43,6 +43,7 @@ public sealed partial class ShuttleSystem : SharedShuttleSystem
     [Dependency] private readonly MetaDataSystem _metadata = default!;
     [Dependency] private readonly PvsOverrideSystem _pvs = default!;
     [Dependency] private readonly SharedAudioSystem _audio = default!;
+    [Dependency] private readonly SharedMapSystem _maps = default!;
     [Dependency] private readonly SharedPhysicsSystem _physics = default!;
     [Dependency] private readonly SharedTransformSystem _transform = default!;
     [Dependency] private readonly ShuttleConsoleSystem _console = default!;

Content.Shared/Shuttles/Components/FTLComponent.cs

@@ -56,6 +56,9 @@ public sealed partial class FTLComponent : Component
         Params = AudioParams.Default.WithVolume(-3f).WithLoop(true)
     };
 
+    [DataField]
+    public EntityUid? StartupStream;
+
     [DataField]
     public EntityUid? TravelStream;
 }