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

public class OptionController : MonoBehaviour
{
    public GameObject[] options;
    private bool moveOK = false;
    private Vector3 playerPos;
    private List<Vector3> playerPosRecord = new List<Vector3>();

    // ★追加
    private int optionCount = 0;

    void Start()
    {
        playerPos = transform.position;

        for (int i = 0; i < 40; i++)
        {
            playerPosRecord.Add(playerPos);
        }

        // ★追加
        // ゲーム開始時は、全Optionをオフ状態にしておく。
        foreach(GameObject g in options)
        {
            g.SetActive(false);
        }
    }

    void Update()
    {
        playerPos = transform.position;

        float h = Mathf.Abs(Input.GetAxis("Horizontal"));
        float v = Mathf.Abs(Input.GetAxis("Vertical"));

        if (h > 0.5f || v > 0.5f)
        {
            moveOK = true;
        }
        else
        {
            moveOK = false;
        }

        if(moveOK)
        {
            playerPosRecord.Insert(0, playerPos);
            playerPosRecord.RemoveAt(playerPosRecord.Count - 1);
        }

        options[0].transform.position = playerPosRecord[9];
        options[1].transform.position = playerPosRecord[19];
        options[2].transform.position = playerPosRecord[29];
        options[3].transform.position = playerPosRecord[39];
    }

    // ★追加
    public void AddOptionCount()
    {
        optionCount += 1;

        // optionCountの数字によって、各Optionをオンにする。
        switch (optionCount)
        {
            case 1:
                options[0].SetActive(true);
                break;

            case 2:
                options[1].SetActive(true);
                break;

            case 3:
                options[2].SetActive(true);
                break;

            case 4:
                options[3].SetActive(true);
                break;
        }
    }
}

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

public class OptionItem : ItemBase
{
    private void OnTriggerEnter(Collider other)
    {
        if (other.CompareTag("Player"))
        {
            ItemGet();

            other.GetComponent<OptionController>().AddOptionCount();
        }
    }
}