blaster/Source/Blaster/Character/BlasterAnimInstance.cpp

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#include "BlasterAnimInstance.h"

#include "BlasterCharacter.h"
#include "GameFramework/CharacterMovementComponent.h"
#include "Kismet/KismetMathLibrary.h"

void UBlasterAnimInstance::NativeInitializeAnimation()
{
	Super::NativeInitializeAnimation();

	BlasterCharacter = Cast<ABlasterCharacter>(TryGetPawnOwner());
}

void UBlasterAnimInstance::NativeUpdateAnimation(float DeltaSeconds)
{
	Super::NativeUpdateAnimation(DeltaSeconds);

	if (BlasterCharacter == nullptr)
	{
		BlasterCharacter = Cast<ABlasterCharacter>(TryGetPawnOwner());
	}

	if (BlasterCharacter == nullptr) return;

	FVector Velocity = BlasterCharacter->GetVelocity();
	Velocity.Z = 0.f;
	Speed = Velocity.Size();

	bIsInAir = BlasterCharacter->GetCharacterMovement()->IsFalling();
	bIsAccelerating = BlasterCharacter->GetCharacterMovement()->GetCurrentAcceleration().Size() > 0.f;
	bWeaponEquipped = BlasterCharacter->IsWeaponEquipped();
	bIsCrouched = BlasterCharacter->bIsCrouched;
	bAiming = BlasterCharacter->IsAiming();

	// Offset Yaw for Strafing
	FRotator AimRotation = BlasterCharacter->GetBaseAimRotation();
	FRotator MovementRotation = UKismetMathLibrary::MakeRotFromX(BlasterCharacter->GetVelocity());
	FRotator DeltaRot = UKismetMathLibrary::NormalizedDeltaRotator(MovementRotation, AimRotation);
	DeltaRotation = FMath::RInterpTo(DeltaRotation, DeltaRot, DeltaSeconds, 6.f);
	YawOffset = DeltaRotation.Yaw;
	
	CharacterRotationLastFrame = CharacterRotation;
	CharacterRotation = BlasterCharacter->GetActorRotation();
	const FRotator Delta = UKismetMathLibrary::NormalizedDeltaRotator(CharacterRotation, CharacterRotationLastFrame);
	const float Target = Delta.Yaw / DeltaSeconds;
	const float Interp = FMath::FInterpTo(Lean, Target, DeltaSeconds, 6.f);
	Lean = FMath::Clamp(Interp, -90.f, 90.f);
}