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

namespace KairoEngine.CharacterSystem
{
    /// <summary>
    /// Action to move a character in a certain direction and speed.
    /// </summary>
    public class CharacterMoveAction : IAction
    {
        CharacterController character; // Reference to the character that will move
        Vector2 direction;
        Vector2 lookDirection;
        bool done = false;

        float speed = 1f;

        // Constructor
        public CharacterMoveAction(CharacterController character, Vector2 direction, Vector2 lookDirection, float speed)
        {
            this.character = character;
            this.direction = direction;
            this.lookDirection = lookDirection;
            this.speed = speed;
            
        }

        public void Start()
        {
            UpdateLookDirection();
            GenericEvents.StartListening(character.unique_name + "-AnimationStepDone", End);
            character.animator.SetFloat("horizontal", (int)lookDirection.x);
            character.animator.SetFloat("vertical", (int)lookDirection.y);
            character.transform.Translate(new Vector3(direction.x * speed * Time.deltaTime, 0, direction.y * speed * Time.deltaTime));
        }

        public void Update()
        {
            UpdateLookDirection();
            character.animator.SetFloat("horizontal", (int)lookDirection.x);
            character.animator.SetFloat("vertical", (int)lookDirection.y);
            character.transform.Translate(new Vector3(direction.x * speed * Time.deltaTime, 0, direction.y * speed * Time.deltaTime));
        }

        public void End()
        {
            if(direction.x > 0.1f || direction.y > 0.1f || direction.x < -0.1f || direction.y < -0.1f) return;
            character.animator.SetFloat("horizontal", 0);
            character.animator.SetFloat("vertical", 0);
            GenericEvents.StopListening(character.unique_name + "-AnimationStepDone", End);
            done = true;
        }

        public bool IsDone()
        {
            return done;
        }

        public void UpdateLookDirection()
        {
            if(speed == 1.25f)
            {
                if(lookDirection.x > 0.1f) lookDirection.x = 1;
                else if(lookDirection.x < -0.1f) lookDirection.x = -1;
                else lookDirection.x = 0;
                if(lookDirection.y > 0.1f) lookDirection.y = 1;
                else if(lookDirection.y < -0.1f) lookDirection.y = -1;
                else lookDirection.y = 0;
            }
            else
            {
                if(lookDirection.x > 0.9f) lookDirection.x = 2;
                else if(lookDirection.x < -0.9f) lookDirection.x = -2;
                else lookDirection.x = 0;
                if(lookDirection.y > 0.9f) lookDirection.y = 2;
                else if(lookDirection.y < -0.9f) lookDirection.y = -2;
                else lookDirection.y = 0;
            }
        }
    }
}