MoverComponent.cpp

// Fill out your copyright notice in the Description page of Project Settings.


#include "MoverComponent.h"
#include "Math/UnrealMathUtility.h"


UMoverComponent::UMoverComponent()
{
    PrimaryComponentTick.bCanEverTick = true;

}


// Called when the game starts
void UMoverComponent::BeginPlay()
{
    Super::BeginPlay();

    Owner = GetOwner();

    if (bMoveOnlyMeshComponent)
    {
        MeshComponent = Owner->FindComponentByClass<UStaticMeshComponent>();

        if (MeshComponent)
        {
            StartLocation = MeshComponent->GetComponentLocation();
        }
        else
        {
            bMoveOnlyMeshComponent = false;
        }

    }

    if(!bMoveOnlyMeshComponent)
    {
        StartLocation = Owner->GetActorLocation();
    }

    TargetLocation = StartLocation;
}


// Called every frame
void UMoverComponent::TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction)
{
    Super::TickComponent(DeltaTime, TickType, ThisTickFunction);

    RecalculateTarget();

    if (bMoveOnlyMeshComponent)
    {
        FVector CurrentLocation = MeshComponent->GetComponentLocation();
        if (!CurrentLocation.Equals(TargetLocation))
        {
            MeshComponent->SetWorldLocation(FMath::VInterpConstantTo(CurrentLocation, TargetLocation, DeltaTime, MovingSpeed));
        }
    }
    else
    {
        FVector CurrentLocation = Owner->GetActorLocation();

        if (!CurrentLocation.Equals(TargetLocation))
        {
            Owner->SetActorLocation(FMath::VInterpConstantTo(CurrentLocation, TargetLocation, DeltaTime, MovingSpeed));
        }
    }
}

void UMoverComponent::Trigger(bool bNewState)
{
    bOpen = bNewState;
}

void UMoverComponent::RecalculateTarget()
{
    if (bOpen != bOpenPrevState)
    {
        bOpenPrevState = bOpen;

        if (bOpen)
        {
            TargetLocation = StartLocation + MoveDirection.GetSafeNormal() * MaxTravelDist;
        }
        else
        {
            TargetLocation = StartLocation;
        }
    }
}