Unreal Engine C++ Developer: Learn C++ and Make Video Games | Udemy UE4.25 Simple Shooterで自分なりに理解したこと。00300 ～プレイヤーの視点取得～

UEソースコードを読むためのC＋＋の勉強なので、パスを書いておく

UE_4.25\Engine\Source\Runtime\Engine\Public\DrawDebugHelpers.hの
DrawDebugCamera()を使うための

/** Draw a debug camera shape.  FOV is full angle in degrees. */ENGINE_API void
/ **デバッグカメラの形状を描画します。 FOVは度単位の全角です。 * /エンジンのAPI
DrawDebugCamera(const UWorld* InWorld, FVector const& Location, FRotator const& Rotation, float FOVDeg, float Scale=1.f, FColor const& Color=FColor::White, bool bPersistentLines=false, float LifeTime=-1.f, uint8 DepthPriority = 0);

UE_4.25\Engine\Source\Runtime\Engine\Classes\GameFramework\Controller.hのGetPlayerViewPoint()

    /**     
* Returns Player’s Point of View     
* For the AI this means the Pawn’s ‘Eyes’ ViewPoint     
* For a Human player, this means the Camera’s ViewPoint     
*     
* @output  out_Location, view location of player     
* @output  out_rotation, view rotation of player     
*/   

/ *
プレイヤーの視点を返します
AIの場合、これはポーンの「目」ビューポイントを意味します
人間のプレイヤーの場合、これはカメラのビューポイントを意味します

@output out_Location、プレーヤーの場所を表示
@output out_rotation、プレーヤーの回転を表示
*/
virtual void GetPlayerViewPoint( FVector& Location, FRotator& Rotation ) const;

Gun.cpp

#include "DrawDebugHelpers.h"
void AGun::PullTrigger()
{
	UE_LOG(LogTemp,Warning,TEXT("You have been shot!! "));
	//MuzzleFlashSocket
	UGameplayStatics::SpawnEmitterAttached(MuzzleFlash, Mesh, TEXT("MuzzleFlashSocket"));
    
	APawn* OwnerPawn = Cast<APawn>(GetOwner());
	if(OwnerPawn==nullptr)
	{
		return;
	}
	AController* OwnerController= OwnerPawn ->GetController();
	if(OwnerController==nullptr)
	{
		return;
	}
	FVector Location;
	FRotator Rotation;
	OwnerController->GetPlayerViewPoint(  Location, Rotation );
	
	//DrawDebugCamera(UWorld, Location, Rotation, float FOVDeg, float Scale=1.f, FColor const& Color=FColor::White, bool bPersistentLines=false, float LifeTime=-1.f, uint8 DepthPriority = 0);
	float FOVDeg=90;
	float Scale=2.f;
	FColor const& Color=FColor::Blue;
	bool bPersistentLines=true;
	float LifeTime=-1.f;
	uint8 DepthPriority = 0;
	DrawDebugCamera(GetWorld(), Location, Rotation, FOVDeg, Scale, Color, bPersistentLines, LifeTime, DepthPriority);

	
}