Unity2d 子弹袋的实现

步骤

一、制作子弹袋预制体

二、设置玩家刚体组件的碰撞检测永不休眠

三、给子弹袋添加动画

四、给拾取子弹袋的动作添加粒子系统特效（小星星）

五、最后给子弹袋绑定BulletGet脚本即可

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拾取子弹袋增加子弹

每拾取一个，增加一颗子弹（调用玩家脚本）

拾取过程播放特效

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class BulletGet : MonoBehaviour
{
    public int bulletCount=1;
 
    public ParticleSystem collectEffect;
 
    private void OnTriggerEnter2D(Collider2D collision)
    {
        PlayerControl pc = collision.GetComponent<PlayerControl>();
        if(pc!=null)
        {
            if(pc.MyCurBulletCount<pc.MyMaxBulletCount)
            {
                pc.ChangeBulletCount(bulletCount);
                Instantiate(collectEffect, transform.position, Quaternion.identity);
                Destroy(this.gameObject);
            }
        }
    }
}

玩家脚本

using System.Collections;
using System.Collections.Generic;
using UnityEditor;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;
 
public class PlayerControl : MonoBehaviour
{
    //主角速度
    public float speed = 8f;
    //定义2d刚体
    Rigidbody2D rbody;
    //定义动画
    Animator anim;
    //初始屏幕看
    Vector2 lookDirection = new Vector2(0, -1);
 
    //定义一个机器人对象
    GameObject robotObj;
    //最大健康值
    private int maxHealth = 2;//改为2;
    //当前健康值
    private int currentHealth;
    //其他脚本可获取最大健康值
    public int MyMaxHealth { get { return maxHealth; } }
    //其他脚本可获取当前健康值
    public int MyCurrentHealth { get { return currentHealth; } }
 
    //无敌时间
    private float wuditime = 2f;
    //无敌计时器
    private float wuditimer;
    //无敌状态
    private bool isWudi;
 
    //子弹数量
    [SerializeField]
    private int curBulletCount=1;
 
    private int maxBulletCount=6;
 
    public float gametime=0;
 
    public int MyCurBulletCount { get { return curBulletCount; } }
    public int MyMaxBulletCount { get { return maxBulletCount; } }
    //子弹预制体
    public GameObject bulletPrefab;
 
    //敌人剩余数量
    public static int enemyleft;
    //public int curEnemyleft { get { return enemyleft; } }
 
    //游戏结束提示
    public GameObject GameOver;
    //指定为主角并销毁
    public GameObject GameOverPlayer;
    //任务完成提示
    public GameObject MissionCompleted;
    //无法实现在其他脚本中销毁提示，故在此脚本中限时销毁
    public float showTime = 3;
    private float showTimer;
 
    //智能提示框计时器
    public float tiptime = 6;
    private float tiptimer;
 
    //任务完成标记，显示标志，一场游戏中只显示一次
    public static int showflag=0;
 
    //玩家音效
    public AudioClip hitClip;
    public AudioClip launchClip;
 
    //智能提示文本
    public Text tips;
    public GameObject tipsframe;
 
    // Start is called before the first frame update
    void Start()
    {
        //操作方式选择
        ctrlway();
        //任务完成状态的初始化
        showflag = 0;
        //隐藏任务完成提示
        MissionCompleted.SetActive(false);
        //提示计时器设置为负值
        showTimer = -1;
        tiptimer = -1;
        //开始游戏后初始化敌人数量
        SetEnemyNum();
 
 
        //获取2d刚体
        rbody = GetComponent<Rigidbody2D>();
        //获取动画组件
        anim = GetComponent<Animator>();
 
 
        //初始化生命值
        currentHealth = 1;
        //初始化无敌时间
        wuditimer = 0;
        //更新生命条与子弹数量
        UIManager.instance.UpdateHealthBar(currentHealth, maxHealth);
        UIManager.instance.UpdateBulletCount(curBulletCount, maxBulletCount);
    }
 
    // Update is called once per frame
    void Update()
    {
        if(showflag!=1)
        {
            UpdateTime();
        }
        UpdateEnemyLeft();
 
        //任务完成显示 计时器
        showTimer -= Time.deltaTime;
        //提示框显示 计时器
        tiptimer -= Time.deltaTime;
 
        //超过时间就取消显示任务完成
        if (showTimer < 0)
        {   
            MissionCompleted.SetActive(false);
        }
        
        /*//超过时间就取消显示提示文本
        if(tiptimer<0)
        {
            tipsframe.SetActive(false);
        }*/
        
        //取消显示提示文本
        if(showTimer+5<0)
        {
            tipsframe.SetActive(false);
        }
 
        //敌人数量为0，并且是第一次达到0，之前没有完成任务，任务完成
        if (enemyleft==0 && showflag != 1)
        {
            //给倒计时器赋值，以此显示提示
            showTimer = showTime;
            //已经完成任务了，标记一下，之后不再显示
            showflag = 1;
            //显示任务完成提示
            MissionCompleted.SetActive(true);
            //显示前往下一关的提示
            tip();
        }
        
        //如果生命值为0，显示游戏结束字样，并销毁主角
        if (currentHealth==0)
        {
            GameOver.SetActive(true);
            tip();
            GameObject.Find("Ruby").GetComponent<PlayerControl>().enabled = false;
            //gameObject.SetActive(false);
            //Destroy(GameOverPlayer);
        }
 
        //如果没有子弹了，则进行提示
        if(curBulletCount==0 && currentHealth!=0)
        {
            tip();
        }
 
        //如果游戏超时，则进行提示
        if (gametime > 180)
        {
            tip();
        }
 
        float moveX=0;
        float moveY=0;
 
        //如果没有禁用键盘
        if (UIEntry.ctrlflag != 2)
        {
            //获取运动矢量
            moveX = Input.GetAxisRaw("Horizontal");
            moveY = Input.GetAxisRaw("Vertical");
        }
 
        Vector2 moveVector = new Vector2(moveX, moveY);
 
        if(moveX!=0||moveY!=0)
        {
            lookDirection = moveVector;
        }
 
        Vector2 position = transform.position;
        position.x += moveX * speed * Time.deltaTime;
        position.y += moveY * speed * Time.deltaTime;
 
        transform.position = new Vector2(position.x, position.y);
        //用刚体移动可以消除画面抖动
        rbody.MovePosition(position);
 
        //为动画集赋值
        //状态集的切换由运动矢量决定
        anim.SetFloat("move X",lookDirection.x);
        anim.SetFloat("move Y",lookDirection.y);
        anim.SetFloat("runspeed", moveVector.magnitude);
        //赋值必须与状态集命名一样
 
        
        //如果处于无敌状态，就计时
        if(isWudi)
        {
            wuditimer -= Time.deltaTime;
            //计时器归0，就不处于无敌状态了
            if(wuditimer<0)
            {
                isWudi = false;
            }
        }
        
        //当按下J，并且子弹大于0，开火（没有禁用键盘）
        if(Input.GetKeyDown(KeyCode.J) && curBulletCount>0 && UIEntry.ctrlflag != 2)
        {
            ChangeBulletCount(-1);
            anim.SetTrigger("Launch");
            AudioManager.instance.AudioPlay(launchClip);
            GameObject bullet = Instantiate(bulletPrefab, rbody.position+Vector2.up*0.5f, Quaternion.identity);
            BulletControl bc = bullet.GetComponent<BulletControl>();
            if(bc!=null)
            {
                bc.Shoot(lookDirection, 300);
            }
        }
        //按下鼠标左键，开枪(没有禁用鼠标)
        if (Input.GetMouseButtonDown(1) && curBulletCount > 0 && UIEntry.ctrlflag != 3)
        {
            RaycastHit2D raycast = Physics2D.Raycast(Camera.main.ScreenToWorldPoint(Input.mousePosition), Vector2.zero);
            Vector2 hitPoint = new Vector2(raycast.point.x, raycast.point.y);
            Vector2 curposition = new Vector2(gameObject.transform.position.x, gameObject.transform.position.y);
            Vector2 ShootDirection = hitPoint - curposition;
            ChangeBulletCount(-1);
            anim.SetTrigger("Launch");
            AudioManager.instance.AudioPlay(launchClip);
            GameObject bullet = Instantiate(bulletPrefab, rbody.position + Vector2.up * 0.5f, Quaternion.identity);
            BulletControl bc = bullet.GetComponent<BulletControl>();
            if (bc != null)
            {
                bc.Shoot(ShootDirection, 300);//lookDirection
            }
        }
        //按E与npc交互
        if (Input.GetKeyDown(KeyCode.E))
        {
            RaycastHit2D hit = Physics2D.Raycast(rbody.position, lookDirection, 2f, LayerMask.GetMask("NPC"));
            if(hit.collider!=null)
            {
                Debug.Log("hit npc!");
                NPCManager npc = hit.collider.GetComponent<NPCManager>();
                if(npc!=null)
                {
                    npc.ShowDialog();
                }
            }
        }
    }
 
    private void OnTriggerEnter2D(Collider2D collision)
    {
        //踩到雷区，自动生成僵尸
        float robotX = Random.Range(-3, 5);
        float robotY = Random.Range(-3, 5);
        Vector2 position_robot = new Vector2(robotX, robotY);
 
        if(collision.gameObject.tag=="bomb")//如果碰到雷区
        {
            print("other.tag=" + collision.gameObject.tag);//这句一定要有，不然出不来
            robotObj = Instantiate(Resources.Load("Prefabs/Robot"),position_robot,Quaternion.identity)as GameObject;//加载资源,生成一个预制体，做成一个对象
        }
    }
 
    private void OnTriggerExit2D(Collider2D collision)
    {
        //离开雷区，僵尸消失
        if(collision.gameObject.tag=="bomb")
        {
            Destroy(robotObj);
        }
    }
 
    public void changeHealth(int amount)
    {
        //可能是受到伤害，也可能是加血
        if(amount<0)
        {
            //如果是受伤，设置无敌状态，则2秒内不能受伤
            if(isWudi==true)
            {
                return;
            }
            isWudi = true;
            //播放受伤动画
            anim.SetTrigger("Hit");
            //播放受伤音效
            AudioManager.instance.AudioPlay(hitClip);
            //为无敌计时器赋值
            wuditimer = wuditime;
        }
        //更改健康值
        currentHealth = Mathf.Clamp(currentHealth+amount,0,maxHealth);
        //更新血条
        UIManager.instance.UpdateHealthBar(currentHealth, maxHealth);
        //调试
        Debug.Log(currentHealth + "/" + maxHealth);
    }
 
    public void ChangeBulletCount(int amount)
    {
        //改变子弹数
        curBulletCount = Mathf.Clamp(curBulletCount + amount, 0, maxBulletCount);
        //改变UI子弹数
        UIManager.instance.UpdateBulletCount(curBulletCount, maxBulletCount);
    }
 
    public void UpdateTime()
    {
        //游戏时间
        gametime += Time.deltaTime;
        //Debug.Log((int)gametime);
 
        //改变UI时间
        UIManager.instance.UpdateTimeBar((int)gametime);
    }
 
    public void UpdateEnemyLeft()
    {
        UIManager.instance.UpdateEnemyLeft(enemyleft);
    }
 
    void SetEnemyNum()
    {
        int index = SceneManager.GetActiveScene().buildIndex;
        if(index==1)
        {
            enemyleft = 2;
        }
        if(index==2)
        {
            enemyleft = 3;
        }
    }
 
    public void ctrlway()
    {
        if(UIEntry.ctrlflag==1)
        {
            GameObject.Find("Ruby").GetComponent<PlayerControl>().enabled = true;
            GameObject.Find("Ruby").GetComponent<Follow>().enabled = true;
        }
        else if(UIEntry.ctrlflag == 2)
        {
            //不能禁用这个脚本,改为在if语句中利用UIEntry.ctrlflag禁用操作
            //GameObject.Find("Ruby").GetComponent<PlayerControl>().enabled = false;
            GameObject.Find("Ruby").GetComponent<Follow>().enabled = true;
        }
        else if(UIEntry.ctrlflag == 3)
        {
            GameObject.Find("Ruby").GetComponent<PlayerControl>().enabled = true;
            GameObject.Find("Ruby").GetComponent<Follow>().enabled = false;
        }
    }
    public void tip()
    {
        //tiptimer = tiptime;
 
        if(showflag==1)
        {
            int index = SceneManager.GetActiveScene().buildIndex;
            if(index==1)
            {
                tipsframe.SetActive(true);
                tips.text = "Tips:\n快前往城堡，进行下一关吧!";
            }
            else if(index==2)
            {
                tipsframe.SetActive(true);
                tips.text = "Tips:\n亲亲、你已经通关了，请五星好评哦!";
            }
        }
        else if(currentHealth==0)
        {
            tipsframe.SetActive(true);
            int index = SceneManager.GetActiveScene().buildIndex;
            if(index==1)
            {
                tips.text = "Tips:\n该长教训了吧，哈哈!";
            }
            else if(index==2 && RobotControl.isFixed%2==1)
            {
                tips.text = "Tips:\n机器人被激怒，会主动攻击人哦。尝试着对它连续完成两次攻击吧!";
            }
            else if (index == 2 && RobotControl.isFixed % 2 != 1)
            {
                tips.text = "Tips:\n你可长点教训吧，哈哈!";
            }
            else
            {
                return;
            }
        }
        else if(curBulletCount==0 && currentHealth!=0)
        {
            tipsframe.SetActive(true);
            tips.text = "Tips:\n没有子弹了，快去拾取子弹吧!";
        }
        else if(gametime>180)
        {
            tipsframe.SetActive(true);
            tips.text = "Tips:\n游戏超时了哦";
        }
    }
}

附完整教程：

Unity2d Rubys Adventure 课程设计报告