Do not charge vehicle running costs when waiting in depot due to timetable

See: #202

src/aircraft_cmd.cpp

@@ -2152,7 +2152,7 @@ bool Aircraft::Tick()
 
 	this->tick_counter++;
 
-	if (!(this->vehstatus & VS_STOPPED)) this->running_ticks++;
+	if (!((this->vehstatus & VS_STOPPED) || this->IsWaitingInDepot())) this->running_ticks++;
 
 	if (this->subtype == AIR_HELICOPTER) HelicopterTickHandler(this);
 

src/roadveh_cmd.cpp

@@ -2119,7 +2119,7 @@ bool RoadVehicle::Tick()
 	UpdateStateChecksum((((uint64) this->x_pos) << 32) | this->y_pos);
 	UpdateStateChecksum((((uint64) this->state) << 32) | this->frame);
 	if (this->IsFrontEngine()) {
-		if (!(this->IsRoadVehicleStopped())) this->running_ticks++;
+		if (!(this->IsRoadVehicleStopped() || this->IsWaitingInDepot())) this->running_ticks++;
 		return RoadVehController(this);
 	}
 

src/ship_cmd.cpp

@@ -972,7 +972,7 @@ reverse_direction:
 bool Ship::Tick()
 {
 	UpdateStateChecksum((((uint64) this->x_pos) << 32) | this->y_pos);
-	if (!(this->vehstatus & VS_STOPPED)) this->running_ticks++;
+	if (!((this->vehstatus & VS_STOPPED) || this->IsWaitingInDepot())) this->running_ticks++;
 
 	ShipController(this);
 

src/train_cmd.cpp

@@ -5162,7 +5162,7 @@ bool Train::Tick()
 {
 	UpdateStateChecksum((((uint64) this->x_pos) << 32) | (this->y_pos << 16) | this->track );
 	if (this->IsFrontEngine()) {
-		if (!(this->vehstatus & VS_STOPPED) || this->cur_speed > 0) this->running_ticks++;
+		if (!((this->vehstatus & VS_STOPPED) || this->IsWaitingInDepot()) || this->cur_speed > 0) this->running_ticks++;
 
 		this->current_order_time++;
 

src/vehicle_base.h

@@ -584,6 +584,11 @@ public:
 		return this->IsChainInDepot();
 	}
 
+	bool IsWaitingInDepot() const {
+		assert(this == this->First());
+		return this->current_order.IsType(OT_WAITING) && this->IsChainInDepot();
+	}
+
 	/**
 	 * Calls the tick handler of the vehicle
 	 * @return is this vehicle still valid?