ActionTowerDefense/ActionTowerDefense/Assets/Scripts/Foot.cs

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

public class Foot : MonoBehaviour
{
    public Rigidbody rb;
    public bool haveGravity = true;
    public bool TrigGround
    {
        get
        {
            return trigGroundList.Count > 0;
        }
    }

    public List<GameObject> trigGroundList;

    private void Awake()
    {
        rb = GetComponentInParent<Rigidbody>();
    }
    private void Update()
    {
        if (trigGroundList.Count == 0)
        {
            if (!haveGravity)
            {
                rb.useGravity = true;
                haveGravity = true;
                rb.GetComponent<MoveCharacter>().velocityAddition = Vector3.zero;
            }
        }
        else
        {
            if (haveGravity)
            {
                if (rb.velocity.y < 0)
                {
                    foreach (GameObject i in trigGroundList)
                    {
                        if (i.layer == 13)
                        {
                            rb.useGravity = false;
                            rb.velocity = new Vector3(rb.velocity.x, 0, rb.velocity.z);
                            haveGravity = false;
                            rb.transform.position = new Vector3
                                (rb.transform.position.x, i.transform.position.y, rb.transform.position.z);
                            break;
                        }
                    }

                }

            }
            else
            {
                Platform platform = trigGroundList[0].GetComponent<Platform>();
                if (platform != null)
                {
                    rb.GetComponent<MoveCharacter>().velocityAddition = rb.velocity;
                }
            }

        }

        
    }
    private void FixedUpdate()
    {
        for (int i = 0; i < trigGroundList.Count; i++)
        {
            if (trigGroundList[i] == null)
            {
                trigGroundList.RemoveAt(i);
                i--;
            }
        }
    }

    private void OnTriggerEnter(Collider other)
    {
        if (other.CompareTag("Plane"))
        {
            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--;
            }
        }
    }
}