[游戏开发]郑轻软件21-08 庞翔文 unity 3D作品--坦克大战

一、游戏目的及实现

1.完成自身坦克的移动，炮弹预设体的发射。

2.敌方坦克在场景内随机生成。

3.敌方坦克的移动，自动攻击玩家，在前方20m处无玩家时自动巡逻。

4.当炮弹触碰到敌人，敌人被摧毁。

5.主摄像机的自动跟随--3d俯视or第三人称。

?二、源码上传

1.自身坦克移动.

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

public class tankmove : MonoBehaviour
{
    public GameObject myprefab;
    public float moveSpeed = 1;
    public float returnSpeed = 1;
    public float paodanfly = 10f;
    float ho;
    float vr;
    private Transform gunpoint;
    // Start is called before the first frame update
    void Start()
    {
        gunpoint = transform.Find("Cylinder/gunpoint");
    }

    // Update is called once per frame
    void Update()
    {
        //移动-转向
        ho = Input.GetAxis("Horizonal");
        vr = Input.GetAxis("Vertical");
        transform.position += transform.forward * vr * Time.deltaTime * moveSpeed;
        transform.eulerAngles += new Vector3(0, 1 * ho * returnSpeed, 0);
        if (Input.GetKeyDown(KeyCode.Space))
        {
            Fire();
        }
    }

    private void Fire()
    {
        //发射预设体
        GameObject paodan = Instantiate(myprefab,gunpoint.position, Quaternion.identity);
        // paodan.GetComponent<paodandong>().vdr = transform.forward;
        paodan.GetComponent<Rigidbody>().velocity = transform.forward * paodanfly;
        Destroy(paodan, 5f);
       // paodan.transform.position = transform.position + new Vector3(0, transform.forward.y, 0);
    }
}

2.随机生成，此脚本挂载在空对象中

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

public class enemytank : MonoBehaviour
{
    [Header("敌方坦克预设体")]
    public GameObject enemytankprefab;
    [Header("时间限制")]
    public float interval = 3f;
    [Range(20,100)]
    public int maxenemy = 50;
    //计时器
    private float timer;
    //计数器
    private int  counter=0;
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        timer += Time.deltaTime;
        if (timer > interval)
        {
            if (counter <= maxenemy)
            {
                createtank();
            }
            counter++;
            //计时器归零
            timer = 0;
        }
    }
      private void createtank()
    {
        //范围
            float x = Random.Range(-40f, 40f);
            float z = Random.Range(-40f, 40f);
          
        int y = Random.Range(0, 360);

        Quaternion qua= Quaternion.Euler(new Vector3(0, y, 0));
           GameObject direntank= Instantiate(enemytankprefab, new Vector3(x, 0, z), qua);
    }
}

3.此脚本挂载至敌方坦克预设体上.

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

public class enemytankmove : MonoBehaviour
{
    private Transform player;
    private float distance;
    private RaycastHit hit;
    private Transform gunpoint;
    private float timer;
    private float y = 0;
    public float turnspeed = 2f;
    public float movespeed = 5f;
    public float fireinterval = 3f;
    public float paodanfly = 30f;
    public GameObject myprefab;

    // Start is called before the first frame update
    void Start()
    {
        player = GameObject.FindWithTag("Player").transform;
        gunpoint = transform.Find("Cylinder/gunpoint");
    }

    // Update is called once per frame
    void Update()
    {
        timer += Time.deltaTime;
        //计算距离
        distance = Vector3.Distance(transform.position, player.position);
        if(distance<10)
        {
            //开炮
            fire();
        }
        else if(distance<20)
        {
            //向前逼近
            MoveToPlayer();
        }
        else
        {
            MoveFree();
            //瞎走，逛街
        }
    }
   
    private void fire()
    {
        RotateToPlayer();
      
        if(timer>fireinterval)
        {
            //计时器归零
            timer = 0;
            GameObject paodan = Instantiate(myprefab, gunpoint.position, Quaternion.identity);
           //炮弹移动
            paodan.GetComponent<Rigidbody>().velocity = transform.forward * paodanfly;
            Destroy(paodan, 5f);
        }
    }
    private void MoveToPlayer()
    {
        RotateToPlayer();
       
            transform.position += transform.forward * Time.deltaTime * movespeed;
       
    }
    private void MoveFree()
    {
        transform.position += transform.forward * Time.deltaTime * movespeed;
        rotate(Quaternion.Euler(Vector3.up * y));
        if (timer>fireinterval)
        {
           y = Random.Range(0, 360);
            //转向
            
            timer = 0;
        }
    }
    private void Rotateto(Vector3 dir)
    {
        Quaternion qur = Quaternion.LookRotation(dir);
        rotate(qur);
    }
    private void RotateToPlayer()
    {
        Vector3 dir = player.position - transform.position;
        Rotateto(dir);
    }
    private void rotate(Quaternion n)
    {
        transform.rotation = Quaternion.Lerp(transform.rotation, n, Time.deltaTime * turnspeed);
    }
}

4.摧毁敌人

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

public class destory : MonoBehaviour
{
    // Start is called before the first frame update
    private void OnTriggerEnter(Collider other)
    {
        if(other.gameObject.tag=="diren1")
        {
            other.gameObject.SetActive(false);
        }
    }
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        
    }
}

5.摄像机跟随

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

public class camerafollow : MonoBehaviour
{
    //跟随的目标
    public Transform followTarget;
    private Vector3 dir;

    // Start is called before the first frame update
    void Start()
    {
        //计算方向向量
        dir = followTarget.position - transform.position;
    }

    // Update is called once per frame
    void Update()
    {
        //时刻保持方向向量
        transform.position = followTarget.position - dir;
    }
}

三、总结

在编译过程中出现了种种错误和难以解决的报错，同时也体现了我对编译的不熟练及开荒试错的艰难。也感谢实验室的学长学姐。