/**
* Get location and rotation of camera. Sets players view point to camera location and rotation.
* Sets where the trace will start, which direction, and where it ends. Traceparms setup to return details of whats collided.
* Traces a ray against the world, returning the first blocking hit.
*
* @params location to store hit info, distance of trace ray, the collision channel
* @return return the hit actor.
**/
bool APlayerCharacter::TraceFromSelf(FHitResult& OutResult, const float TraceDistance, ECollisionChannel const CollisionChannel)
{
if (Controller)
{
FVector CameraLoc;
FRotator CameraRot;
Controller->GetPlayerViewPoint(CameraLoc, CameraRot); //Location to cast ray (from player)
FVector const BeginTrace = CameraLoc;
FVector const ShootDir = CameraRot.Vector();
FVector const TraceEnd = BeginTrace + ShootDir * TraceDistance;
FCollisionQueryParams TraceParms(FName(TEXT("TraceFromSelf")), true, this); //returns what collided
bool bHitReturned = false; //to determine if anything hit
UWorld* const World = GetWorld();
if (World)
{
bHitReturned = World->LineTraceSingleByChannel(OutResult, BeginTrace, TraceEnd, CollisionChannel, TraceParms);
}
TraceParms.bTraceAsyncScene = true; //Whether we should perform the trace in the asynchronous scene.Default is false.
TraceParms.bReturnPhysicalMaterial = false; //Only fill in the PhysMaterial field
TraceParms.bTraceComplex = true; //Whether we should trace against complex collision
return bHitReturned;
}
return false; //if there is no controller, nothing traced.
}
const FHitResult UGrabber::GetFirstPhysicsBodyInReach()
{
// Line trace
FHitResult HitResult;
FCollisionQueryParams TraceParms(FName(TEXT("")), false, GetOwner());
GetWorld()->LineTraceSingleByObjectType(OUT HitResult, GetReachLineStart(), GetReachLineEnd(), FCollisionObjectQueryParams(ECollisionChannel::ECC_PhysicsBody), TraceParms);
return HitResult;
}
