安卓拖动精灵代码 Unity 5.

Question

我是 Unity 的新手，一直在学习有关如何制作 Captain Blaster 2D 游戏的教程，但是我想将其转换为 Android，我想通过用一根手指在屏幕上拖动他来使玩家可控，但不明白我的代码出了什么问题，有什么帮助，谢谢

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
public class ShipControl : MonoBehaviour {
    public float playerSpeed = 10f;
    public GameControl gameController;
    public GameObject bulletPrefab;
    public float reloadTime = 1f;
    private float elapsedTime = 0;

    void Update()
    {
        elapsedTime += Time.deltaTime;
        if (Input.touchCount >= 1)
        {
            foreach (Touch touch in Input.touches) 
            {
                Ray ray = Camera.main.ScreenPointToRay (touch.position);
                RaycastHit hit;
                if (Physics.Raycast (ray, out hit, 100)) {
                }
            }
        if (elapsedTime > reloadTime)
        {
            Vector3 spawnPos = transform.position;
            spawnPos += new Vector3 (0, 1.2f, 0);
            Instantiate (bulletPrefab, spawnPos, Quaternion.identity);
                elapsedTime = 0f;
        }
        }
    }
    void OnTriggerEnter2D(Collider2D other)
    {
        gameController.PlayerDied ();
    }
}

Answer 1

我要做的是添加一个名为"拖动"的布尔值，在检查 Raycast 是否击中任何东西后，您还会检查命中对象是否是玩家游戏对象。如果是，那么只要用户不释放触摸 - 使玩家的僵硬身体向触摸位置移动(因此，如果有任何障碍物，它根本不会直接穿过它们(。

代码可能如下所示(您还应该添加一些计时器来检查玩家是否释放触摸并将拖动布尔值设置为 false(：

public float playerSpeed = 10f;
public GameControl gameController;
public GameObject bulletPrefab;
public float reloadTime = 1f;
private float elapsedTime = 0;
private bool dragging = false;

void Update()
{
    if (Input.touchCount >= 1)
    {
        foreach (Touch touch in Input.touches) 
        {
            Ray ray = Camera.main.ScreenPointToRay (touch.position);
            RaycastHit hit;
            if (Physics.Raycast (ray, out hit, 100)) 
            {
                if(hit.collider.tag == "Player") // check if hit collider has Player tag
                {
                    dragging = true;
                }
            }
            if(dragging)
            {
                //First rotate the player towards the touch (should do some checks if it's not too close so it doesn't glitch out)
                Vector3 _dir = Camera.main.ScreenToWorldPoint(touch.position) - transform.position;
                _dir.Normalize();
                float _rotZ = Mathf.Atan2(_dir.y, _dir.x) * Mathf.Rad2Deg;
                transform.rotation = Quaternion.Euler(0f, 0f, _rotZ - 90);
                //Move towards the touch
                transform.GetComponent<Rigidbody>().AddRelativeForce(direction.normalized * playerSpeed, ForceMode.Force);
            }
        }
    }
}