# prg 5-8 箭頭控制並顯示次數在畫面上
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class ArrowController : MonoBehaviour
{
    // Start is called before the first frame update
    GameObject player;
    GameObject steak;
 
    void Start()
    {
        this.player = GameObject.Find("player");
        steak = GameObject.Find("Steak_txt");
    }

    // Update is called once per frame
    void Update()
    {
        transform.Translate(0, -0.1f, 0);

        if (transform.position.y < -5.0f) {
            Destroy(gameObject);
        }

        Vector2 p1 = transform.position;
        Vector2 p2 = this.player.transform.position;
        Vector2 dir = p1-p2;
        float d = dir.magnitude;
        float r1 = 0.5f;
        float r2 = 1.0f;

        if (d < r1+r2) {
            GameObject director = GameObject.Find("GameDirector");
            director.GetComponent<GameDirector>().DecreaseHp();

            ArrowGenerator.eat_steak += 1;
            steak.GetComponent<Text>().text = "吃了幾塊 "+ArrowGenerator.eat_steak.ToString("D5") + "牛排";

            Destroy(gameObject);
        }
    }
}