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

namespace DS
{
    public class AnimatorHandler : MonoBehaviour
    {
        public PlayerLocomotion playerLocomotion;
        public Animator animator;
        private int _vertical;
        private int _horizontal;
        public bool canRotate;

        public void Initialize()
        {
            animator = GetComponent<Animator>();
            _vertical = Animator.StringToHash("Vertical");
            _horizontal = Animator.StringToHash("Horizontal");
        }

        public void UpdateAnimatorValues(float verticalMovement, float horizontalMovement)
        {
            #region Vertical

            float v = 0;

            if (verticalMovement > 0 && verticalMovement < 0.55f)
            {
                v = 0.5f;
            }
            else if(verticalMovement > 0.55f)
            {
                v = 1;
            }
            else if (verticalMovement < 0 && verticalMovement > -0.55f)
            {
                v = -0.5f;
            }
            else if(verticalMovement < -0.55f)
            {
                v = -1;
            }
            else
            {
                v = 0;
            }
            
            #endregion
            
            #region Horizontal

            float h = 0;

            if (horizontalMovement > 0 && horizontalMovement < 0.55f)
            {
                h = 0.5f;
            }
            else if(horizontalMovement > 0.55f)
            {
                h = 1;
            }
            else if (horizontalMovement < 0 && horizontalMovement > -0.55f)
            {
                h = -0.5f;
            }
            else if(horizontalMovement < -0.55f)
            {
                h = -1;
            }
            else
            {
                h = 0;
            }
            
            #endregion
            
            animator.SetFloat(_vertical,v,0.1f,Time.deltaTime);
            animator.SetFloat(_horizontal,h,0.1f,Time.deltaTime);
        }

        public void CanRotate()
        {
            canRotate = true;
        }

        public void StopRotation()
        {
            canRotate = false;
        }

        private void OnAnimatorMove()
        {
            var rootMotion = GetRootMotion();
            Debug.Log(rootMotion);
            playerLocomotion.rootMotion = rootMotion;
        }

        private void OnDrawGizmos()
        {
            Gizmos.DrawLine(transform.position, transform.position + GetRootMotion() * 2f);
        }

        private Vector3 GetRootMotion()
        {
            // 我们先假定 地板永远是朝上的
            var normalVector = Vector3.up;
            return Vector3.ProjectOnPlane(animator.velocity, normalVector);
        }
    }

}