EnemyAI.cpp

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

#include "TD.h"
#include "EnemyAI.h"
#include "Waypoint.h"
#include "EnemyAIController.h"


// Sets default values
AEnemyAI::AEnemyAI()
{
 	// Set this character to call Tick() every frame.  You can turn this off to improve performance if you don't need it.
	PrimaryActorTick.bCanEverTick = true;

}

// Called when the game starts or when spawned
void AEnemyAI::BeginPlay()
{
	Super::BeginPlay();
  AIController = Cast<AEnemyAIController>(GetController());
  UGameplayStatics::GetAllActorsOfClass(GetWorld(), AWaypoint::StaticClass(), Waypoints);
  MoveToWaypoints();
}

// Called every frame
void AEnemyAI::Tick(float DeltaTime)
{
	Super::Tick(DeltaTime);
  CurrentVelocity = GetCharacterMovement()->Velocity;
}

// Called to bind functionality to input
void AEnemyAI::SetupPlayerInputComponent(UInputComponent* PlayerInputComponent)
{
	Super::SetupPlayerInputComponent(PlayerInputComponent);

}

void AEnemyAI::MoveToWaypoints()
{
  

  if (CurrentWaypoint > 1)
  {
    GetCharacterMovement()->Velocity = CurrentVelocity;
  }
  

  if (AIController)
  {
    if (CurrentWaypoint <= Waypoints.Num())
    {
      for (AActor* Waypoint : Waypoints)
      {
        AWaypoint* WaypointItr = Cast<AWaypoint>(Waypoint);

        if (Waypoint)
        {
          if (WaypointItr->GetWaypointNumber() == CurrentWaypoint)
          {
            AIController->MoveToActor(Waypoint, 5.f, false);
            
            break;
          }
        }
      }
    }
  }

  CurrentWaypoint++;

  
}

EnemyAIController.cpp

#include "TD.h"
#include "EnemyAI.h"
#include "EnemyAIController.h"


void AEnemyAIController::OnMoveCompleted(FAIRequestID RequestID, const FPathFollowingResult& Result)
{
  AEnemyAI* EnemyAI = Cast<AEnemyAI>(GetControlledPawn());

  if (EnemyAI)
  {
    EnemyAI->MoveToWaypoints();
  }
}