From d17d51e8fb2e73027afc4440a89424e37826a834 Mon Sep 17 00:00:00 2001
From: Hirek <polomarket73@gmail.com>
Date: Mon, 20 Oct 2025 21:25:32 +0200
Subject: [PATCH] Direction relay sounds

---
 DynObj.cpp | 17 +++++++++++++++++
 DynObj.h   |  3 +++
 Train.cpp  | 33 +++++++++++++++++++++++++++++++++
 Train.h    |  4 ++++
 4 files changed, 57 insertions(+)

diff --git a/DynObj.cpp b/DynObj.cpp
index d259b0c9..e5f046d5 100644
--- a/DynObj.cpp
+++ b/DynObj.cpp
@@ -6790,6 +6790,23 @@ void TDynamicObject::LoadMMediaFile( std::string const &TypeName, std::string co
                     m_powertrainsounds.dsbWejscie_na_bezoporow.deserialize( parser, sound_type::single );
                     m_powertrainsounds.dsbWejscie_na_bezoporow.owner( this );
                 }
+                // przekazniki od kierunku jazdy
+                else if (token == "directionrelay_d:") {
+                    // przekaznik od kierunku jazdy do przodu
+					sDirectionRelayD.deserialize(parser, sound_type::single);
+                    sDirectionRelayD.owner(this);
+                }
+                else if (token == "directionrelay_r:") {
+					// przekaznik od kierunku jazdy do tylu
+					sDirectionRelayR.deserialize(parser, sound_type::single);
+					sDirectionRelayR.owner(this);
+                }
+				else if (token == "directionrelay_n:")
+				{
+					// przekaznik od kierunku jazdy do tylu
+					sDirectionRelayN.deserialize(parser, sound_type::single);
+					sDirectionRelayN.owner(this);
+				}
                 else if( token == "wejscie_na_drugi_uklad:" ) {
                     m_powertrainsounds.motor_parallel.deserialize( parser, sound_type::single );
                     m_powertrainsounds.motor_parallel.owner( this );
diff --git a/DynObj.h b/DynObj.h
index c24b942f..1f6c8c75 100644
--- a/DynObj.h
+++ b/DynObj.h
@@ -516,6 +516,9 @@ private:
     std::vector<axle_sounds> m_axlesounds;
     // engine sounds
     powertrain_sounds m_powertrainsounds;
+    sound_source sDirectionRelayD { sound_placement::engine }; // przekaznik kierunkowy do przodu
+    sound_source sDirectionRelayN { sound_placement::engine }; // przekaznik kierunkowy neutral
+    sound_source sDirectionRelayR { sound_placement::engine }; // przekaznik kierunkowy wstecz
     sound_source sConverter { sound_placement::engine };
 	sound_source sBRVent {sound_placement::engine};
     sound_source sCompressor { sound_placement::engine }; // NBMX wrzesien 2003
diff --git a/Train.cpp b/Train.cpp
index c656f630..1fdaec8f 100644
--- a/Train.cpp
+++ b/Train.cpp
@@ -8476,12 +8476,45 @@ bool TTrain::Update( double const Deltatime )
     if (!FreeFlyModeFlag && simulation::Train == this) // don't bother if we're outside
         update_screens(Deltatime);
 
+    // update direction relay
+	if (prevBatState != mvOccupied->Power24vIsAvailable)
+        SetupDirectionRelays();
+	if (prevDirection != mvOccupied->DirActive)
+		UpdateDirectionRelays();
+
+    prevBatState = mvOccupied->Power24vIsAvailable;
+	prevDirection = mvOccupied->DirActive;
+
+
+
+
     // sounds
     update_sounds( Deltatime );
 
     return true; //(DynamicObject->Update(dt));
 } // koniec update
 
+void TTrain::UpdateDirectionRelays() {
+	if (mvOccupied->DirActive < 0 && mvOccupied->Power24vIsAvailable) // wstecz
+		Dynamic()->sDirectionRelayR.play();
+	if (mvOccupied->DirActive == 0 && mvOccupied->Power24vIsAvailable) // neutral
+		Dynamic()->sDirectionRelayN.play();
+	if (mvOccupied->DirActive > 0 && mvOccupied->Power24vIsAvailable) // przod
+		Dynamic()->sDirectionRelayD.play();
+}
+
+void TTrain::SetupDirectionRelays() {
+    if (mvOccupied->Power24vIsAvailable)
+    {
+		if (mvOccupied->DirActive < 0 && mvOccupied->Power24vIsAvailable) // wstecz
+			Dynamic()->sDirectionRelayR.play();
+		if (mvOccupied->DirActive > 0 && mvOccupied->Power24vIsAvailable) // przod
+			Dynamic()->sDirectionRelayD.play();
+    }
+	else if (mvOccupied->DirActive != 0)  // neutral
+		Dynamic()->sDirectionRelayN.play();
+}
+
 void
 TTrain::update_sounds( double const Deltatime ) {
 
diff --git a/Train.h b/Train.h
index 47c21866..7ea49776 100644
--- a/Train.h
+++ b/Train.h
@@ -164,6 +164,10 @@ class TTrain {
         return m_controlmapper.find( Control ); }
     void UpdateCab();
     bool Update( double const Deltatime );
+	void UpdateDirectionRelays();
+	void SetupDirectionRelays();
+	bool prevBatState = false;
+	int prevDirection = 0;
     void add_distance( double const Distance );
     // McZapkie-310302: ladowanie parametrow z pliku
     bool LoadMMediaFile(std::string const &asFileName);