Cleanup: Remove unnecessary VehicleRandomBits()

Simple Random() assignment to byte does the same.

src/aircraft_cmd.cpp

@@ -344,8 +344,8 @@ CommandCost CmdBuildAircraft(DoCommandFlag flags, TileIndex tile, const Engine *
 		v->sprite_cache.sprite_seq.Set(SPR_IMG_QUERY);
 		u->sprite_cache.sprite_seq.Set(SPR_IMG_QUERY);
 
-		v->random_bits = VehicleRandomBits();
-		u->random_bits = VehicleRandomBits();
+		v->random_bits = Random();
+		u->random_bits = Random();
 
 		v->vehicle_flags = 0;
 		if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
@@ -375,7 +375,7 @@ CommandCost CmdBuildAircraft(DoCommandFlag flags, TileIndex tile, const Engine *
 			w->spritenum = 0xFF;
 			w->subtype = AIR_ROTOR;
 			w->sprite_cache.sprite_seq.Set(SPR_ROTOR_STOPPED);
-			w->random_bits = VehicleRandomBits();
+			w->random_bits = Random();
 			/* Use rotor's air.state to store the rotor animation frame */
 			w->state = HRS_ROTOR_STOPPED;
 			w->UpdateDeltaXY();

src/articulated_vehicles.cpp

@@ -8,6 +8,7 @@
 /** @file articulated_vehicles.cpp Implementation of articulated vehicles. */
 
 #include "stdafx.h"
+#include "core/random_func.hpp"
 #include "train.h"
 #include "roadveh.h"
 #include "vehicle_func.h"
@@ -405,7 +406,7 @@ void AddArticulatedParts(Vehicle *first)
 		v->engine_type = engine_type;
 		v->value = 0;
 		v->sprite_cache.sprite_seq.Set(SPR_IMG_QUERY);
-		v->random_bits = VehicleRandomBits();
+		v->random_bits = Random();
 
 		if (flip_image) v->spritenum++;
 

src/roadveh_cmd.cpp

@@ -303,7 +303,7 @@ CommandCost CmdBuildRoadVehicle(DoCommandFlag flags, TileIndex tile, const Engin
 		v->build_year = TimerGameCalendar::year;
 
 		v->sprite_cache.sprite_seq.Set(SPR_IMG_QUERY);
-		v->random_bits = VehicleRandomBits();
+		v->random_bits = Random();
 		v->SetFrontEngine();
 
 		v->roadtype = rt;

src/ship_cmd.cpp

@@ -905,7 +905,7 @@ CommandCost CmdBuildShip(DoCommandFlag flags, TileIndex tile, const Engine *e, V
 		v->date_of_last_service = TimerGameCalendar::date;
 		v->build_year = TimerGameCalendar::year;
 		v->sprite_cache.sprite_seq.Set(SPR_IMG_QUERY);
-		v->random_bits = VehicleRandomBits();
+		v->random_bits = Random();
 
 		v->UpdateCache();
 

src/train_cmd.cpp

@@ -656,7 +656,7 @@ static CommandCost CmdBuildRailWagon(DoCommandFlag flags, TileIndex tile, const
 		v->date_of_last_service = TimerGameCalendar::date;
 		v->build_year = TimerGameCalendar::year;
 		v->sprite_cache.sprite_seq.Set(SPR_IMG_QUERY);
-		v->random_bits = VehicleRandomBits();
+		v->random_bits = Random();
 
 		v->group_id = DEFAULT_GROUP;
 
@@ -721,7 +721,7 @@ static void AddRearEngineToMultiheadedTrain(Train *v)
 	u->date_of_last_service = v->date_of_last_service;
 	u->build_year = v->build_year;
 	u->sprite_cache.sprite_seq.Set(SPR_IMG_QUERY);
-	u->random_bits = VehicleRandomBits();
+	u->random_bits = Random();
 	v->SetMultiheaded();
 	u->SetMultiheaded();
 	v->SetNext(u);
@@ -786,7 +786,7 @@ CommandCost CmdBuildRailVehicle(DoCommandFlag flags, TileIndex tile, const Engin
 		v->date_of_last_service = TimerGameCalendar::date;
 		v->build_year = TimerGameCalendar::year;
 		v->sprite_cache.sprite_seq.Set(SPR_IMG_QUERY);
-		v->random_bits = VehicleRandomBits();
+		v->random_bits = Random();
 
 		if (e->flags & ENGINE_EXCLUSIVE_PREVIEW) SetBit(v->vehicle_flags, VF_BUILT_AS_PROTOTYPE);
 		v->SetServiceIntervalIsPercent(Company::Get(_current_company)->settings.vehicle.servint_ispercent);

src/vehicle.cpp

@@ -359,15 +359,6 @@ Vehicle::Vehicle(VehicleType type)
 	this->last_loading_station = INVALID_STATION;
 }
 
-/**
- * Get a value for a vehicle's random_bits.
- * @return A random value from 0 to 255.
- */
-byte VehicleRandomBits()
-{
-	return GB(Random(), 0, 8);
-}
-
 /* Size of the hash, 6 = 64 x 64, 7 = 128 x 128. Larger sizes will (in theory) reduce hash
  * lookup times at the expense of memory usage. */
 const int HASH_BITS = 7;

src/vehicle_func.h

@@ -50,7 +50,6 @@ uint8 CalcPercentVehicleFilled(const Vehicle *v, StringID *colour);
 
 void VehicleLengthChanged(const Vehicle *u);
 
-byte VehicleRandomBits();
 void ResetVehicleHash();
 void ResetVehicleColourMap();