Add another bell clothing item

Content.Shared/_NF/Clothing/Components/EmitsSoundOnMoveComponent.cs

@@ -0,0 +1,35 @@
+using Robust.Shared.Audio;
+using Robust.Shared.GameStates;
+using Robust.Shared.Map;
+
+namespace Content.Shared._NF.Clothing.Components;
+
+/// <summary>
+///   Indicates that the clothing entity emits sound when it moves.
+/// </summary>
+[RegisterComponent, NetworkedComponent, AutoGenerateComponentState]
+public sealed partial class EmitsSoundOnMoveComponent : Component
+{
+    [ViewVariables(VVAccess.ReadWrite)]
+    [DataField(required: true), AutoNetworkedField]
+    public SoundSpecifier SoundCollection = default!;
+
+    [ViewVariables(VVAccess.ReadWrite)]
+    [DataField("requiresGravity"), AutoNetworkedField]
+    public bool RequiresGravity = true;
+
+    [ViewVariables(VVAccess.ReadOnly)]
+    public EntityCoordinates LastPosition = EntityCoordinates.Invalid;
+
+    /// <summary>
+    ///   The distance moved since the played sound.
+    /// </summary>
+    [ViewVariables(VVAccess.ReadOnly)]
+    public float SoundDistance = 0f;
+
+    /// <summary>
+    ///   Whether this item is equipped in a inventory item slot.
+    /// </summary>
+    [ViewVariables(VVAccess.ReadOnly)]
+    public bool IsSlotValid = true;
+}

Content.Shared/_NF/Clothing/Systems/EmitsSoundOnMoveSystem.cs

@@ -0,0 +1,99 @@
+using System.Numerics;
+using Content.Shared._NF.Clothing.Components;
+using Content.Shared.Clothing.Components;
+using Content.Shared.Gravity;
+using Content.Shared.Inventory;
+using Content.Shared.Inventory.Events;
+using Content.Shared.Mobs.Components;
+using Content.Shared.Movement.Components;
+using Robust.Shared.Physics.Components;
+using Robust.Shared.Timing;
+
+namespace Content.Shared._NF.Clothing.Systems;
+
+public sealed class EmitsSoundOnMoveSystem : EntitySystem
+{
+    [Dependency] private readonly SharedAudioSystem _audio = default!;
+    [Dependency] private readonly SharedMapSystem _grid = default!;
+    [Dependency] private readonly SharedGravitySystem _gravity = default!;
+    [Dependency] private readonly IGameTiming _timing = default!;
+
+    private EntityQuery<InputMoverComponent> _moverQuery;
+    private EntityQuery<PhysicsComponent> _physicsQuery;
+    private EntityQuery<TransformComponent> _xformQuery;
+    private EntityQuery<ClothingComponent> _clothingQuery;
+
+    public override void Initialize()
+    {
+        _moverQuery = GetEntityQuery<InputMoverComponent>();
+        _physicsQuery = GetEntityQuery<PhysicsComponent>();
+        _xformQuery = GetEntityQuery<TransformComponent>();
+        _clothingQuery = GetEntityQuery<ClothingComponent>();
+
+        SubscribeLocalEvent<EmitsSoundOnMoveComponent, GotEquippedEvent>(OnEquipped);
+        SubscribeLocalEvent<EmitsSoundOnMoveComponent, GotUnequippedEvent>(OnUnequipped);
+    }
+
+    private void OnEquipped(EntityUid uid, EmitsSoundOnMoveComponent component, GotEquippedEvent args)
+    {
+        component.IsSlotValid = !args.SlotFlags.HasFlag(SlotFlags.POCKET);
+    }
+
+    private void OnUnequipped(EntityUid uid, EmitsSoundOnMoveComponent component, GotUnequippedEvent args)
+    {
+        component.IsSlotValid = true;
+    }
+
+    public override void Update(float frameTime)
+    {
+        var query = EntityQueryEnumerator<EmitsSoundOnMoveComponent>();
+        while (query.MoveNext(out var uid, out var comp))
+        {
+            UpdateSound(uid, comp);
+        }
+        query.Dispose();
+    }
+
+    private void UpdateSound(EntityUid uid, EmitsSoundOnMoveComponent component)
+    {
+        if (!_xformQuery.TryGetComponent(uid, out var xform) ||
+            !_physicsQuery.TryGetComponent(uid, out var physics))
+            return;
+
+        // Space does not transmit sound
+        if (xform.GridUid == null)
+            return;
+
+        if (component.RequiresGravity && _gravity.IsWeightless(uid, physics, xform))
+            return;
+
+        var parent = xform.ParentUid;
+
+        var isWorn = parent is { Valid: true } &&
+                     _clothingQuery.TryGetComponent(uid, out var clothing)
+                     && clothing.InSlot != null
+                     && component.IsSlotValid;
+        // If this entity is worn by another entity, use that entity's coordinates
+        var coordinates = isWorn ? Transform(parent).Coordinates : xform.Coordinates;
+        var distanceNeeded = (isWorn && _moverQuery.TryGetComponent(parent, out var mover) && mover.Sprinting)
+            ? 1.5f // The parent is a mob that is currently sprinting
+            : 2f; // The parent is not a mob or is not sprinting
+
+        if (!coordinates.TryDistance(EntityManager, component.LastPosition, out var distance) || distance > distanceNeeded)
+            component.SoundDistance = distanceNeeded;
+        else
+            component.SoundDistance += distance;
+
+        component.LastPosition = coordinates;
+        if (component.SoundDistance < distanceNeeded)
+            return;
+        component.SoundDistance -= distanceNeeded;
+
+        var sound = component.SoundCollection;
+        var audioParams = sound.Params
+            .WithVolume(sound.Params.Volume)
+            .WithVariation(sound.Params.Variation ?? 0f);
+
+        _audio.PlayPredicted(sound, uid, uid, audioParams);
+    }
+}

Resources/Prototypes/Catalog/VendingMachines/Inventories/theater.yml

@@ -6,6 +6,7 @@
     ClothingHeadHatJesterAlt: 8
     ClothingUniformJumpsuitJesterAlt: 8
     ClothingShoesJester: 8
+    ClothingNeckBellCollar: 8
     ClothingOuterWinterClown: 4
     ClothingOuterWinterMime: 4
     ClothingOuterWinterMusician: 4

Resources/Prototypes/_NF/Entities/Clothing/Neck/misc.yml

@@ -18,3 +18,17 @@
     tags:
     - ObjectOfSpiritualSignificance
     - Crucifix
+
+- type: entity
+  parent: ClothingNeckBase
+  id: ClothingNeckBellCollar
+  name: bell collar
+  description: A way to inform others about your presence, or just to annoy everyone around you!
+  components:
+  - type: Sprite
+    sprite: _NF/Clothing/Neck/bellcollar.rsi
+  - type: Clothing
+    sprite: _NF/Clothing/Neck/bellcollar.rsi
+  - type: EmitsSoundOnMove
+    soundCollection:
+      collection: FootstepJester

Resources/Textures/_NF/Clothing/Neck/bellcollar.rsi/meta.json

@@ -0,0 +1,26 @@
+{
+  "version": 1,
+  "license": "CC-BY-SA-3.0",
+  "copyright": "Made by mnemotechnician (GitHub, Frontier) for Frontier Station 14",
+  "size": {
+    "x": 32,
+    "y": 32
+  },
+  "states": [
+    {
+      "name": "icon"
+    },
+    {
+      "name": "equipped-NECK",
+      "directions": 4
+    },
+    {
+      "name": "inhand-left",
+      "directions": 4
+    },
+    {
+      "name": "inhand-right",
+      "directions": 4
+    }
+  ]
+}