using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Sirenix.OdinInspector;

public class Foot : MonoBehaviour
{
    [FoldoutGroup("×é¼þ")] public Rigidbody rb;
    [FoldoutGroup("×é¼þ")] public MoveCharacter moveCharacter;

    public bool haveGravity = true;
    public bool TrigGround
    {
        get
        {
            return trigGroundList.Count > 0;
        }
    }

    public List<GameObject> trigGroundList;

    private void Awake()
    {
        rb = GetComponentInParent<Rigidbody>();
        moveCharacter = rb.transform.GetComponent<MoveCharacter>();
    }

    private void FixedUpdate()
    {
        if (trigGroundList.Count == 0)
        {
            if (!haveGravity|| moveCharacter.platformY != 0)
            {
                rb.useGravity = true;
                haveGravity = true;
                moveCharacter.velocityAddition = 0;
                moveCharacter.platformY = 0;
            }
        }
        else
        {
            Platform platform = null;
            foreach (var item in trigGroundList)
            {
                platform = item.GetComponent<Platform>();
                if (platform!=null)
                {
                    if (moveCharacter.transform.position.x < platform.right.position.x 
                        && moveCharacter.transform.position.x > platform.left.position.x)
                    {
                        break;
                    }
                }
                else
                {
                    break;
                }
            }
            

            if (platform != null)
            {
                if (haveGravity)
                {
                    if (rb.velocity.y <= 0)
                    {
                        rb.useGravity = false;
                        rb.velocity = new Vector3(rb.velocity.x, 0, rb.velocity.z);
                        moveCharacter.platformY = platform.GetPosY(rb.transform.position);
                        rb.transform.position = new Vector3(rb.transform.position.x, moveCharacter.platformY, rb.transform.position.z);
                        haveGravity = false;

                    }
                }
                else
                {
                    if (platform.rb != null)
                    {
                        moveCharacter.velocityAddition = platform.rb.velocity.x;
                    }
                    moveCharacter.platformY = platform.GetPosY(rb.transform.position);

                }
            }
            else
            {
                if (!haveGravity)
                {
                    rb.useGravity = true;
                    haveGravity = true;
                }
            }
        }
    }

    private void OnTriggerEnter(Collider other)
    {
        if (other.CompareTag("Ground")|| other.CompareTag("Platform"))
        {
            if (!trigGroundList.Exists(t => t == other.gameObject))
            {
                trigGroundList.Add(other.gameObject);
            }
        }
    }

    private void OnTriggerExit(Collider other)
    {
        for (int i = 0; i < trigGroundList.Count; i++)
        {
            if (trigGroundList[i] == other.gameObject)
            {
                trigGroundList.RemoveAt(i);
                i--;
            }
        }
    }
}