Initial commit to allow configuring running costs as a fraction (1/1 default thru 1/4) independently for both vehicles stopped in depots (doesn't work for planes, I'm not smart enuff), or vehicles that are stationary.

src/aircraft_cmd.cpp

@@ -463,6 +463,14 @@ Money Aircraft::GetRunningCost() const
 {
 	const Engine *e = this->GetEngine();
 	uint cost_factor = GetVehicleProperty(this, PROP_AIRCRAFT_RUNNING_COST_FACTOR, e->u.air.running_cost);
+
+	/* running costs if in depot -- I haven't gotten this one working yet, can't figure out how to tell if plane is in the depot */
+	if (this->current_order.IsType(OT_GOTO_DEPOT)) cost_factor /= _settings_game.difficulty.vehicle_costs_in_depot;
+
+	/* running costs if stopped */
+	if ((this->cur_speed == 0) && !(this->current_order.IsType(OT_GOTO_DEPOT))) cost_factor /= _settings_game.difficulty.vehicle_costs_when_stopped;
+
+
 	return GetPrice(PR_RUNNING_AIRCRAFT, cost_factor, e->GetGRF());
 }
 

src/lang/english.txt

@@ -1265,6 +1265,14 @@ STR_CONFIG_SETTING_INTEREST_RATE_HELPTEXT                       :Loan interest r
 STR_CONFIG_SETTING_RUNNING_COSTS                                :Running costs: {STRING2}
 STR_CONFIG_SETTING_RUNNING_COSTS_HELPTEXT                       :Set level of maintenance and running costs of vehicles and infrastructure
 
+STR_CONFIG_SETTING_RUNNING_COSTS_IN_DEPOT                       :Running costs of Vehicles in Depot: {STRING2}
+STR_CONFIG_SETTING_RUNNING_COSTS_IN_DEPOT_HELPTEXT              :Set level of maintenance and running costs of vehicles while waiting in depots (not stopped)
+STR_CONFIG_SETTING_RUNNING_COSTS_IN_DEPOT_VALUE                 :1 / {COMMA}
+
+STR_CONFIG_SETTING_RUNNING_COSTS_WHEN_STOPPED                   :Running costs of Stationary Vehicles: {STRING2}
+STR_CONFIG_SETTING_RUNNING_COSTS_WHEN_STOPPED_HELPTEXT          :Set level of maintenance and running costs of vehicles while stationary and not in a depot
+STR_CONFIG_SETTING_RUNNING_COSTS_WHEN_STOPPED_VALUE             :1 / {COMMA}
+
 STR_CONFIG_SETTING_CONSTRUCTION_SPEED                           :Construction speed: {STRING2}
 STR_CONFIG_SETTING_CONSTRUCTION_SPEED_HELPTEXT                  :Limit the amount of construction actions for AIs
 

src/roadveh_cmd.cpp

@@ -2131,6 +2131,12 @@ Money RoadVehicle::GetRunningCost() const
 	uint cost_factor = GetVehicleProperty(this, PROP_ROADVEH_RUNNING_COST_FACTOR, e->u.road.running_cost);
 	if (cost_factor == 0) return 0;
 
+	/* running costs if in depot */
+	if (IsRoadDepotTile(this->tile)) cost_factor /= _settings_game.difficulty.vehicle_costs_in_depot;
+
+	/* running costs if stopped */
+	if ((this->cur_speed == 0) && !(IsRoadDepotTile(this->tile))) cost_factor /= _settings_game.difficulty.vehicle_costs_when_stopped;
+
 	return GetPrice(e->u.road.running_cost_class, cost_factor, e->GetGRF());
 }
 

src/settings_gui.cpp

@@ -1930,6 +1930,8 @@ static SettingsContainer &GetSettingsTree()
 			accounting->Add(new SettingEntry("economy.feeder_payment_share"));
 			accounting->Add(new SettingEntry("economy.infrastructure_maintenance"));
 			accounting->Add(new SettingEntry("difficulty.vehicle_costs"));
+			accounting->Add(new SettingEntry("difficulty.vehicle_costs_in_depot"));
+			accounting->Add(new SettingEntry("difficulty.vehicle_costs_when_stopped"));
 			accounting->Add(new SettingEntry("difficulty.construction_cost"));
 		}
 

src/settings_type.h

@@ -78,6 +78,8 @@ struct DifficultySettings {
 	uint32 max_loan;                         ///< the maximum initial loan
 	byte   initial_interest;                 ///< amount of interest (to pay over the loan)
 	byte   vehicle_costs;                    ///< amount of money spent on vehicle running cost
+	uint8  vehicle_costs_in_depot;           ///< amount of money spent on vehicle running cost when in depot
+	uint8  vehicle_costs_when_stopped;       ///< amount of money spent on vehicle running cost when vehicle is stopped
 	byte   competitor_speed;                 ///< the speed at which the AI builds
 	byte   vehicle_breakdowns;               ///< likelihood of vehicles breaking down
 	byte   subsidy_multiplier;               ///< payment multiplier for subsidized deliveries

src/ship_cmd.cpp

@@ -229,6 +229,13 @@ Money Ship::GetRunningCost() const
 {
 	const Engine *e = this->GetEngine();
 	uint cost_factor = GetVehicleProperty(this, PROP_SHIP_RUNNING_COST_FACTOR, e->u.ship.running_cost);
+
+	/* running costs if in depot */
+	if (IsShipDepotTile(this->tile)) cost_factor /= _settings_game.difficulty.vehicle_costs_in_depot;
+
+	/* running costs if stopped */
+	if ((this->cur_speed == 0) && !(IsShipDepotTile(this->tile))) cost_factor /= _settings_game.difficulty.vehicle_costs_when_stopped;
+
 	return GetPrice(PR_RUNNING_SHIP, cost_factor, e->GetGRF());
 }
 

src/table/settings/settings.ini

@@ -272,6 +272,30 @@ strhelp  = STR_CONFIG_SETTING_RUNNING_COSTS_HELPTEXT
 strval   = STR_SEA_LEVEL_LOW
 cat      = SC_BASIC
 
+[SDT_VAR]
+var      = difficulty.vehicle_costs_in_depot
+type     = SLE_UINT8
+from     = SLV_97
+flags    = SF_NEWGAME_ONLY | SF_SCENEDIT_TOO
+def      = 1
+min      = 1
+max      = 4
+str      = STR_CONFIG_SETTING_RUNNING_COSTS_IN_DEPOT
+strhelp  = STR_CONFIG_SETTING_RUNNING_COSTS_IN_DEPOT_HELPTEXT
+strval   = STR_CONFIG_SETTING_RUNNING_COSTS_IN_DEPOT_VALUE
+
+[SDT_VAR]
+var      = difficulty.vehicle_costs_when_stopped
+type     = SLE_UINT8
+from     = SLV_97
+flags    = SF_NEWGAME_ONLY | SF_SCENEDIT_TOO
+def      = 1
+min      = 1
+max      = 4
+str      = STR_CONFIG_SETTING_RUNNING_COSTS_WHEN_STOPPED
+strhelp  = STR_CONFIG_SETTING_RUNNING_COSTS_WHEN_STOPPED_HELPTEXT
+strval   = STR_CONFIG_SETTING_RUNNING_COSTS_WHEN_STOPPED_VALUE
+
 [SDT_VAR]
 var      = difficulty.competitor_speed
 type     = SLE_UINT8

src/train_cmd.cpp

@@ -6456,6 +6456,12 @@ Money Train::GetRunningCost() const
 		/* Halve running cost for multiheaded parts */
 		if (v->IsMultiheaded()) cost_factor /= 2;
 
+		/* running costs if in depot */
+		if (v->track == TRACK_BIT_DEPOT) cost_factor /= _settings_game.difficulty.vehicle_costs_in_depot;
+
+		/* running costs if stopped */
+		if ((v->cur_speed == 0) && !(v->track == TRACK_BIT_DEPOT)) cost_factor /= _settings_game.difficulty.vehicle_costs_when_stopped;
+
 		cost += GetPrice(e->u.rail.running_cost_class, cost_factor, e->GetGRF());
 	} while ((v = v->GetNextVehicle()) != nullptr);