Why does Unreal Engine crash when I try to do a switch statement?

Development Programming & Scripting C++
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1

I’ve been trying to do a raycast and seeing what physical material it hits and doing damage based on the physical material hit on a player but every time I hit the player Unreal Engine crashes.
Any ideas on how I could implement this without it crashing?

Player.CPP

//Health is the UHealthComponent and HP is the health value of the component on the player
//Target is the player hit reference and Hit is the FHitResult hit info
switch (Hit.PhysMaterial.Get()->SurfaceType)
		{
		case 1:
			UGameplayStatics::ApplyPointDamage(Target, 10.0f, Hit.TraceStart, Hit, GetInstigatorController(), this, UDamageType::StaticClass());
			GEngine->AddOnScreenDebugMessage(-1, 1.0f, FColor::Green, FString::SanitizeFloat(Target->Health->HP));
			break;
		case 2:
			UGameplayStatics::ApplyPointDamage(Target, 20.0f, Hit.TraceStart, Hit, GetInstigatorController(), this, UDamageType::StaticClass());
			GEngine->AddOnScreenDebugMessage(-1, 1.0f, FColor::Green, FString::SanitizeFloat(Target->Health->HP));
			break;
		default:
			UGameplayStatics::ApplyPointDamage(Target, 30.0f, Hit.TraceStart, Hit, GetInstigatorController(), this, UDamageType::StaticClass());
			GEngine->AddOnScreenDebugMessage(-1, 1.0f, FColor::Green, FString::SanitizeFloat(Target->Health->HP));
		}

Thanks in advance.

2

Most likely the PhysMaterial is NULL and you’re dereferencing it which causes crash (unlike BP where it just logs an error message).

3

BTW your code should be shortened to the form:

auto Amount = FMath::Clamp(Hit.PhysMaterial.Get()->SurfaceType * 10.0f, 10.0f, 30.0f);
UGameplayStatics::ApplyPointDamage(Target, Amount, Hit.TraceStart, Hit, GetInstigatorController(), this, UDamageType::StaticClass());
GEngine->AddOnScreenDebugMessage(-1, 1.0f, FColor::Green, FString::SanitizeFloat(Target->Health->HP);
4

Thanks for the recommendation I’ll implement it now.

5

Thanks I also think that’s the problem but how do I access the PhysMaterial?(It’s a custom PhysMaterial)