Vehicles (#7336)

Content.Server/Vehicle/HonkSystem.cs

@@ -0,0 +1,57 @@
+using Content.Shared.Vehicle.Components;
+using Content.Shared.Vehicle;
+using Content.Shared.Toggleable;
+using Content.Shared.Audio;
+using Robust.Shared.Player;
+using Robust.Shared.Audio;
+
+namespace Content.Server.Vehicle
+{
+    /// <summary>
+    /// Controls all the vehicle horns.
+    /// </summary>
+    public sealed class HonkSystem : EntitySystem
+    {
+        public override void Initialize()
+        {
+            base.Initialize();
+            SubscribeLocalEvent<VehicleComponent, HonkActionEvent>(OnHonk);
+            SubscribeLocalEvent<VehicleComponent, ToggleActionEvent>(OnSirenToggle);
+        }
+
+        /// <summary>
+        /// This fires when the rider presses the honk action
+        /// </summary>
+        private void OnHonk(EntityUid uid, VehicleComponent vehicle, HonkActionEvent args)
+        {
+            if (args.Handled)
+                return;
+            if (vehicle.HornSound != null)
+            {
+                SoundSystem.Play(Filter.Pvs(uid), vehicle.HornSound.GetSound(), uid, AudioHelpers.WithVariation(0.1f).WithVolume(8f));
+                args.Handled = true;
+            }
+        }
+
+        /// <summary>
+        /// For vehicles with horn sirens (like the secway) this uses different logic that makes the siren
+        /// loop instead of using a normal honk.
+        /// </summary>
+        private void OnSirenToggle(EntityUid uid, VehicleComponent vehicle, ToggleActionEvent args)
+        {
+            if (args.Handled || !vehicle.HornIsLooping)
+                return;
+
+            if (!vehicle.LoopingHornIsPlaying)
+            {
+                vehicle.SirenPlayingStream?.Stop();
+                vehicle.LoopingHornIsPlaying = true;
+                if (vehicle.HornSound != null)
+                    vehicle.SirenPlayingStream = SoundSystem.Play(Filter.Pvs(uid), vehicle.HornSound.GetSound(), uid, AudioParams.Default.WithLoop(true).WithVolume(1.8f));
+                return;
+            }
+            vehicle.SirenPlayingStream?.Stop();
+            vehicle.LoopingHornIsPlaying = false;
+        }
+    }
+}