Feature: Hotkey to honk a vehicle's horn (#10110)

src/newgrf_sound.cpp

@@ -181,11 +181,12 @@ SoundID GetNewGRFSoundID(const GRFFile *file, SoundID sound_id)
  * Checks whether a NewGRF wants to play a different vehicle sound effect.
  * @param v Vehicle to play sound effect for.
  * @param event Trigger for the sound effect.
+ * @param force Should we play the sound effect even if vehicle sound effects are muted?
  * @return false if the default sound effect shall be played instead.
  */
-bool PlayVehicleSound(const Vehicle *v, VehicleSoundEvent event)
+bool PlayVehicleSound(const Vehicle *v, VehicleSoundEvent event, bool force)
 {
-	if (!_settings_client.sound.vehicle) return true;
+	if (!_settings_client.sound.vehicle && !force) return true;
 
 	const GRFFile *file = v->GetGRF();
 	uint16 callback;

src/newgrf_sound.h

@@ -34,7 +34,7 @@ bool LoadNewGRFSound(SoundEntry *sound);
 SoundID GetNewGRFSoundID(const struct GRFFile *file, SoundID sound_id);
 SoundEntry *GetSound(SoundID sound_id);
 uint GetNumSounds();
-bool PlayVehicleSound(const Vehicle *v, VehicleSoundEvent event);
+bool PlayVehicleSound(const Vehicle *v, VehicleSoundEvent event, bool force  = false);
 void PlayTileSound(const struct GRFFile *file, SoundID sound_id, TileIndex tile);
 
 #endif /* NEWGRF_SOUND_H */

src/ship.h

@@ -38,7 +38,7 @@ struct Ship FINAL : public SpecializedVehicle<Ship, VEH_SHIP> {
 	void MarkDirty();
 	void UpdateDeltaXY();
 	ExpensesType GetExpenseType(bool income) const { return income ? EXPENSES_SHIP_REVENUE : EXPENSES_SHIP_RUN; }
-	void PlayLeaveStationSound() const;
+	void PlayLeaveStationSound(bool force = false) const;
 	bool IsPrimaryVehicle() const { return true; }
 	void GetImage(Direction direction, EngineImageType image_type, VehicleSpriteSeq *result) const;
 	int GetDisplaySpeed() const { return this->cur_speed / 2; }

src/ship_cmd.cpp

@@ -272,16 +272,10 @@ void Ship::MarkDirty()
 	this->UpdateCache();
 }
 
-static void PlayShipSound(const Vehicle *v)
+void Ship::PlayLeaveStationSound(bool force) const
 {
-	if (!PlayVehicleSound(v, VSE_START)) {
-		SndPlayVehicleFx(ShipVehInfo(v->engine_type)->sfx, v);
-	}
-}
-
-void Ship::PlayLeaveStationSound() const
-{
-	PlayShipSound(this);
+	if (PlayVehicleSound(this, VSE_START, force)) return;
+	SndPlayVehicleFx(ShipVehInfo(this->engine_type)->sfx, this);
 }
 
 TileIndex Ship::GetOrderStationLocation(StationID station)
@@ -398,7 +392,7 @@ static bool CheckShipLeaveDepot(Ship *v)
 	v->UpdateViewport(true, true);
 	SetWindowDirty(WC_VEHICLE_DEPOT, v->tile);
 
-	PlayShipSound(v);
+	v->PlayLeaveStationSound();
 	VehicleServiceInDepot(v);
 	InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);
 	SetWindowClassesDirty(WC_SHIPS_LIST);

src/sound.cpp

@@ -235,6 +235,7 @@ void SndCopyToPool()
 
 /**
  * Decide 'where' (between left and right speaker) to play the sound effect.
+ * Note: Callers must determine if sound effects are enabled. This plays a sound regardless of the setting.
  * @param sound Sound effect to play
  * @param left   Left edge of virtual coordinates where the sound is produced
  * @param right  Right edge of virtual coordinates where the sound is produced
@@ -243,8 +244,6 @@ void SndCopyToPool()
  */
 static void SndPlayScreenCoordFx(SoundID sound, int left, int right, int top, int bottom)
 {
-	if (_settings_client.music.effect_vol == 0) return;
-
 	/* Iterate from back, so that main viewport is checked first */
 	for (const Window *w : Window::IterateFromBack()) {
 		const Viewport *vp = w->viewport;

src/train.h

@@ -110,7 +110,7 @@ struct Train FINAL : public GroundVehicle<Train, VEH_TRAIN> {
 	void MarkDirty() override;
 	void UpdateDeltaXY() override;
 	ExpensesType GetExpenseType(bool income) const override { return income ? EXPENSES_TRAIN_REVENUE : EXPENSES_TRAIN_RUN; }
-	void PlayLeaveStationSound() const override;
+	void PlayLeaveStationSound(bool force = false) const override;
 	bool IsPrimaryVehicle() const override { return this->IsFrontEngine(); }
 	void GetImage(Direction direction, EngineImageType image_type, VehicleSpriteSeq *result) const override;
 	int GetDisplaySpeed() const override { return this->gcache.last_speed; }

src/train_cmd.cpp

@@ -2100,7 +2100,7 @@ bool Train::FindClosestDepot(TileIndex *location, DestinationID *destination, bo
 }
 
 /** Play a sound for a train leaving the station. */
-void Train::PlayLeaveStationSound() const
+void Train::PlayLeaveStationSound(bool force) const
 {
 	static const SoundFx sfx[] = {
 		SND_04_DEPARTURE_STEAM,
@@ -2110,10 +2110,9 @@ void Train::PlayLeaveStationSound() const
 		SND_41_DEPARTURE_MAGLEV
 	};
 
-	if (PlayVehicleSound(this, VSE_START)) return;
+	if (PlayVehicleSound(this, VSE_START, force)) return;
 
-	EngineID engtype = this->engine_type;
-	SndPlayVehicleFx(sfx[RailVehInfo(engtype)->engclass], this);
+	SndPlayVehicleFx(sfx[RailVehInfo(this->engine_type)->engclass], this);
 }
 
 /**

src/vehicle_base.h

@@ -450,8 +450,9 @@ public:
 
 	/**
 	 * Play the sound associated with leaving the station
+	 * @param force Should we play the sound even if sound effects are muted? (horn hotkey)
 	 */
-	virtual void PlayLeaveStationSound() const {}
+	virtual void PlayLeaveStationSound(bool force = false) const {}
 
 	/**
 	 * Whether this is the primary vehicle in the chain.

src/vehicle_gui.cpp

@@ -41,6 +41,7 @@
 #include "order_cmd.h"
 #include "roadveh_cmd.h"
 #include "train_cmd.h"
+#include "hotkeys.h"
 
 #include "safeguards.h"
 
@@ -2686,26 +2687,6 @@ static const NWidgetPart _nested_vehicle_view_widgets[] = {
 	EndContainer(),
 };
 
-/** Vehicle view window descriptor for all vehicles but trains. */
-static WindowDesc _vehicle_view_desc(
-	WDP_AUTO, "view_vehicle", 250, 116,
-	WC_VEHICLE_VIEW, WC_NONE,
-	0,
-	_nested_vehicle_view_widgets, lengthof(_nested_vehicle_view_widgets)
-);
-
-/**
- * Vehicle view window descriptor for trains. Only minimum_height and
- *  default_height are different for train view.
- */
-static WindowDesc _train_view_desc(
-	WDP_AUTO, "view_vehicle_train", 250, 134,
-	WC_VEHICLE_VIEW, WC_NONE,
-	0,
-	_nested_vehicle_view_widgets, lengthof(_nested_vehicle_view_widgets)
-);
-
-
 /* Just to make sure, nobody has changed the vehicle type constants, as we are
 	 using them for array indexing in a number of places here. */
 static_assert(VEH_TRAIN == 0);
@@ -3151,6 +3132,20 @@ public:
 		}
 	}
 
+	EventState OnHotkey(int hotkey) override
+	{
+		/* If the hotkey is not for any widget in the UI (i.e. for honking) */
+		if (hotkey == WID_VV_HONK_HORN) {
+			const Window* mainwindow = FindWindowById(WC_MAIN_WINDOW, 0);
+			const Vehicle* v = Vehicle::Get(window_number);
+			/*Only play the sound if we're following this vehicle */
+			if (mainwindow->viewport->follow_vehicle == v->index) {
+				v->PlayLeaveStationSound(true);
+			}
+		}
+		return Window::OnHotkey(hotkey);
+	}
+
 	void OnQueryTextFinished(char *str) override
 	{
 		if (str == nullptr) return;
@@ -3225,8 +3220,36 @@ public:
 	{
 		::ShowNewGRFInspectWindow(GetGrfSpecFeature(Vehicle::Get(this->window_number)->type), this->window_number);
 	}
+
+	static HotkeyList hotkeys;
 };
 
+static Hotkey vehicleview_hotkeys[] = {
+	Hotkey('H', "honk", WID_VV_HONK_HORN),
+	HOTKEY_LIST_END
+};
+HotkeyList VehicleViewWindow::hotkeys("vehicleview", vehicleview_hotkeys);
+
+/** Vehicle view window descriptor for all vehicles but trains. */
+static WindowDesc _vehicle_view_desc(
+	WDP_AUTO, "view_vehicle", 250, 116,
+	WC_VEHICLE_VIEW, WC_NONE,
+	0,
+	_nested_vehicle_view_widgets, lengthof(_nested_vehicle_view_widgets),
+	&VehicleViewWindow::hotkeys
+);
+
+/**
+ * Vehicle view window descriptor for trains. Only minimum_height and
+ *  default_height are different for train view.
+ */
+static WindowDesc _train_view_desc(
+	WDP_AUTO, "view_vehicle_train", 250, 134,
+	WC_VEHICLE_VIEW, WC_NONE,
+	0,
+	_nested_vehicle_view_widgets, lengthof(_nested_vehicle_view_widgets),
+	&VehicleViewWindow::hotkeys
+);
 
 /** Shows the vehicle view window of the given vehicle. */
 void ShowVehicleViewWindow(const Vehicle *v)

src/widgets/vehicle_widget.h

@@ -27,6 +27,7 @@ enum VehicleViewWidgets {
 	WID_VV_SELECT_REFIT_TURN,  ///< Selection widget between 'refit' and 'turn around' buttons.
 	WID_VV_TURN_AROUND,        ///< Turn this vehicle around.
 	WID_VV_FORCE_PROCEED,      ///< Force this vehicle to pass a signal at danger.
+	WID_VV_HONK_HORN,          ///< Honk the vehicles horn (not drawn on UI, only used for hotkey).
 };
 
 /** Widgets of the #RefitWindow class. */