using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;


public class Movement : MonoBehaviour
{
    //variables

    public Animator anim; // sets variable for animator
    private bool movingleft; //anim bool
    private bool movingright;//anim bool
    private bool movingup;//anim bool
    private bool movingdown;//anim bool
    public float movespeed; //movement speed slider

    //edited by dlich
    public float movementSpeed = 1f;
    private Vector2 oldPos;
    private Vector2 newpos;// new position for movement destination
    private float lerpValue = 0;
    public enum State{idle, movement};
    public State state = State.idle;

    void Start() //start of game trigger
    {
        anim = GetComponent<Animator>(); //get the animator for the player object
    }


    void FixedUpdate() //fixed update runs in sync with the physics machine, which keeps fps good
    {

        if(state == State.idle)
        {
            if(HandleInput())
            {
                lerpValue = 0;
                oldPos = transform.position;
                state = State.movement;
            }
        }
        if(state == State.movement)
        {
            if(lerpValue < 1)
            {
                transform.position = Vector2.Lerp(oldPos, newpos, lerpValue);
                lerpValue += Time.deltatime * movementSpeed
            }
            else state = State.idle;
        }
        HandleAnimation();
    }

    //added by dlich
    public bool HandleMovement()
    {
        newpos = transform.position;
        if (Input.GetKeyDown(KeyCode.W))//move up
        {
            newpos.y = newpos.y + 5; // increments y by 5 (moving up by 5)
            return true;
        }
        if (Input.GetKeyDown(KeyCode.A))// move left
        {
            newpos.x = newpos.x - 5;
            return true;
        }
        if (Input.GetKeyDown(KeyCode.D))// move right
        {
            newpos.x = newpos.x + 5;
            return true;
        }
        if (Input.GetKeyDown(KeyCode.S)) // move down
        {
            newpos.y = newpos.y - 5;
            return true;
        }
        return false;
    }

        ////////////////////////////////////////////////////////////////
        ////Animation
        ////////////////////////////////////////////////////////////////
    HandleAnimation()
    {
        movingleft = Input.GetKey(KeyCode.A);
        movingright = Input.GetKey(KeyCode.D);
        movingup = Input.GetKey(KeyCode.W);
        movingdown = Input.GetKey(KeyCode.S);
        if (movingleft)
        {
            anim.SetBool("moving_left", true);
        }
        if (!movingleft)
        {
            anim.SetBool("moving_left", false);
        }

        //
        if (movingright)
        {
            anim.SetBool("moving_right", true);
        }
        if (!movingright)
        {
            anim.SetBool("moving_right", false);
        }

        //
        if (movingup)
        {
            anim.SetBool("moving_up", true);
        }
        if (!movingup)
        {
            anim.SetBool("moving_up", false);
        }

        //
        if (movingdown)
        {
            anim.SetBool("moving_down", true);
        }
        if (!movingdown)
        {
            anim.SetBool("moving_down", false);
        }
    }
}