Modifying vehicle properties at runtime

Development Programming & Scripting
6

VehicleGame.Build.cs

		PrivateDependencyModuleNames.AddRange(
			new string[] {
				"Slate",
				"SlateCore",
				"PhysX",
			}
		);




class UVehicleMovementComponentBoosted4w

VehicleMovementComponentBoosted4w.h

	/** Wheel Lat Stiff */
	UFUNCTION(BlueprintCallable, Category = "Wheel")
	void SetWheelLatStiff(int32 WheelIndex, float LatStiffValue, float LatStiffMaxLoad, float LongStiffValue, class UTireType* TireType);

	/** Wheel Friction*/
	UFUNCTION(BlueprintCallable, Category = "Wheel")
	void SetWheelFrictionScale(int32 WheelIndex, class UTireType* TireType);

	
VehicleMovementComponentBoosted4w.cpp
	
#if WITH_PHYSX
#include "PxVehicleWheels.h"
#endif //WITH_PHYSX


void UVehicleMovementComponentBoosted4w::SetWheelLatStiff(int32 WheelIndex, float LatStiffValue, float LatStiffMaxLoad, float LongStiffValue, class UTireType* TireType)
{

	if (WheelIndex >= 0 && LatStiffValue > 0.01 && LatStiffMaxLoad > 0.01 && LongStiffValue > 0.01 && Wheels.Num() > WheelIndex)
	{
		Wheels[WheelIndex]->LatStiffValue = LatStiffValue;
		Wheels[WheelIndex]->LatStiffMaxLoad = LatStiffMaxLoad;
		Wheels[WheelIndex]->LongStiffValue = LongStiffValue;
		Wheels[WheelIndex]->TireType = TireType;

		// init tire data
		// physx::PxVehicleTireData PTireData;
		physx::PxVehicleTireData PTireData;
		PTireData.mType = Wheels[WheelIndex]->TireType ? Wheels[WheelIndex]->TireType->GetTireTypeID() : GEngine->DefaultTireType->GetTireTypeID();
		PTireData.mLatStiffX = Wheels[WheelIndex]->LatStiffMaxLoad;
		PTireData.mLatStiffY = Wheels[WheelIndex]->LatStiffValue;
		PTireData.mLongitudinalStiffnessPerUnitGravity = Wheels[WheelIndex]->LongStiffValue;
		
		PVehicle->mWheelsSimData.setTireData(WheelIndex, PTireData);
	}

	
}

void UVehicleMovementComponentBoosted4w::SetWheelFrictionScale(int32 WheelIndex, class UTireType* TireType)
{
	if (WheelIndex >= 0 && Wheels.Num() > WheelIndex)
	{
		Wheels[WheelIndex]->TireType = TireType;
		// init tire data
		// physx::PxVehicleTireData PTireData;
		physx::PxVehicleTireData PTireData;
		PTireData.mType = Wheels[WheelIndex]->TireType ? Wheels[WheelIndex]->TireType->GetTireTypeID() : GEngine->DefaultTireType->GetTireTypeID();
		PTireData.mLatStiffX = Wheels[WheelIndex]->LatStiffMaxLoad;
		PTireData.mLatStiffY = Wheels[WheelIndex]->LatStiffValue;
		PTireData.mLongitudinalStiffnessPerUnitGravity = Wheels[WheelIndex]->LongStiffValue;

		PVehicle->mWheelsSimData.setTireData(WheelIndex, PTireData);
	}
}