From f32b1efb1896723b47103a4a85db3d7add4597cf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kr=C3=B3lik=20Uszasty?= <bunny@awril.pl>
Date: Sun, 3 Jan 2021 19:46:04 +0100
Subject: [PATCH] Additional parameters for cooling fans

---
 McZapkie/MOVER.h   |  3 +++
 McZapkie/Mover.cpp | 25 +++++++++++++++++++++++--
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/McZapkie/MOVER.h b/McZapkie/MOVER.h
index 68fc4bed..5b44f128 100644
--- a/McZapkie/MOVER.h
+++ b/McZapkie/MOVER.h
@@ -821,8 +821,11 @@ private:
     struct cooling_fan : public basic_device {
         // config
         float speed { 0.f }; // cooling fan rpm; either fraction of parent rpm, or absolute value if negative
+		float sustain_time { 0.f }; // time of sustaining work of cooling fans after stop
+		float min_start_velocity { -1.f }; // minimal velocity of vehicle, when cooling fans activate
         // ld outputs
         float revolutions { 0.f }; // current fan rpm
+		float stop_timer { 0.f }; // current time, when shut off condition is active
     };
 
     // basic approximation of a fuel pump
diff --git a/McZapkie/Mover.cpp b/McZapkie/Mover.cpp
index 95764ae0..f612f759 100644
--- a/McZapkie/Mover.cpp
+++ b/McZapkie/Mover.cpp
@@ -1997,7 +1997,26 @@ void TMoverParameters::OilPumpCheck( double const Timestep ) {
 void TMoverParameters::MotorBlowersCheck( double const Timestep ) {
     // activation check
     for( auto &blower : MotorBlowers ) {
-
+		auto disable = blower.is_disabled;
+		if (blower.min_start_velocity >= 0)
+		{
+			if ( Vel < 0.5 && Im < 0.5 )
+			{
+				blower.stop_timer += Timestep;
+				if (blower.stop_timer > blower.sustain_time)
+				{
+					disable = true;
+				}
+			}
+			else if (Vel >= blower.min_start_velocity && Im > 0.5)
+			{
+				blower.stop_timer = 0;
+			}
+			else
+			{
+				disable |= !blower.is_active;
+			}
+		}
         blower.is_active = (
             // TODO: bind properly power source when ld is in place
             ( blower.start_type == start_t::battery ? Power24vIsAvailable :
@@ -2005,7 +2024,7 @@ void TMoverParameters::MotorBlowersCheck( double const Timestep ) {
               Mains ) // power source
             // breaker condition disabled until it's implemented in the class data
 //         && ( true == blower.breaker )
-         && ( false == blower.is_disabled )
+         && ( false == disable)
          && ( ( true == blower.is_active )
            || ( blower.start_type == start_t::manual ?
                     blower.is_enabled :
@@ -10743,6 +10762,8 @@ void TMoverParameters::LoadFIZ_Engine( std::string const &Input ) {
 
     // traction motors
     extract_value( MotorBlowers[ end::front ].speed, "MotorBlowersSpeed", Input, "" );
+	extract_value( MotorBlowers[ end::front ].sustain_time, "MotorBlowersSustainTime", Input, "" );
+	extract_value( MotorBlowers[ end::front ].min_start_velocity, "MotorBlowersStartVelocity", Input, "" );
     MotorBlowers[ end::rear ] = MotorBlowers[ end::front ];
     // pressure switch
     extract_value( HasControlPressureSwitch, "PressureSwitch", Input, ( TrainType != dt_EZT ? "yes" : "no" ) );