unity2D备忘志(二)

随着程序越来越复杂,一下章节不能再贴全部代码了,只贴涉及到的部分,但全部代码会在文末给出

子弹这一部分涉及多个知识点:简单归纳如下 1.给刚体施加力量让其移动 2.利用public一个对象,然后界面绑定的方法传递预制体 3.预制体实例化

十四. 子弹

public void BulletMove(Vector2 moveDirection,float moveForce)
    {
        bulletRigid.AddForce(moveDirection*moveForce);//给子弹添加一个力,它就会受力移动
    }

public GameObject bulletPreb;

        if (Input.GetKeyDown(KeyCode.J))
        {
            GameObject bullet= Instantiate(bulletPreb,rubyBody.position,Quaternion.identity);
            bullet.GetComponent<bullet>().BulletMove(lookVector,300);
        }

1.Awake()是在脚本对象实例化时被调用的，而Start()是在对象的第一帧时被调用的，而且是在Update()之前,先执行Awake方法，再执行Start方法 2.脚本的一些成员，如果想在创建之后的代码中立即使用，则必须写在Awake()里面； 3.当脚本设置为不可用时,Awake方法仍然会执行一次，而Start方法则不会执行！ 所以我们可以简单理解为:实例物体创建后就awake,执行脚本开始时start, awake是实例对象的初始化,start是脚本的初始化

错误的

    private void Awake() 
    {
        bulletRigid=GetComponent<Rigidbody2D>();
    }

Destroy(gameObject,2f);  //写在awake里即可  awake两秒后就会自毁

    private void OnCollisionEnter2D(Collision2D other) 
    {
        Destroy(gameObject);
    }

        if (Input.GetKeyDown(KeyCode.J))
        {
            GameObject bullet= Instantiate(bulletPreb,rubyBody.position,Quaternion.identity);
            bullet.GetComponent<bullet>().BulletMove(lookVector,300);
            anim.SetTrigger("launch");  //触发发射动画
        }

private bool fixedState;//角色被击中否,为被击中:false 击中了:true

fixedState=false;

    public void BeFixed()
    {
        anim.SetTrigger("fixed");    //播放击中动画
        fixedState=true;             //将敌人的状态修改为被击中
        Destroy(gameObject,1f);      //1秒后自爆
    }

    private void OnCollisionEnter2D(Collision2D other) {
        Destroy(gameObject); 
        if(other.gameObject.tag=="Enemy"){                     //判断一下打中的是不是敌人
            other.gameObject.GetComponent<enemy1>().BeFixed(); //敌人被击中调用BeFixed函数
        }
    }

十五. 敌人特效

public ParticleSystem effectSmoke;   //机器人冒烟特效

    public void BeFixed()
    {
        anim.SetTrigger("fixed");
        fixedState=true;
        Destroy(gameObject,2f);
        if(effectSmoke.isPlaying) effectSmoke.Stop();
    }

十六 吃草莓特效

public ParticleSystem strawEffect;

    private void OnTriggerEnter2D(Collider2D other) {
        if (other.tag=="Player")
        {
            if (other.GetComponent<MyRuby>().getHp()<other.GetComponent<MyRuby>().getMaxHp())
            {
                other.GetComponent<MyRuby>().changeHp(1);
                Instantiate(strawEffect,transform.position,Quaternion.identity);  //角色吃草莓时实例化一个特效预制件
                Destroy(this.gameObject);
            }
        }
    }

十七. 血条

using UnityEngine.UI;

public static UIcontroller instance{get;private set;}
void Start()
    {
        instance=this;
    }

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

public class UIcontroller : MonoBehaviour
{
    public Image hpBar;   //注意:hpbar采用的绑定法传递
    public static UIcontroller instance{get;private set;}
    // Start is called before the first frame update
    void Start()
    {
        instance=this;
    }
    public void HpShow(int nowHp,int maxHp){
        Debug.Log(nowHp+"?"+maxHp);
        hpBar.fillAmount=(float) nowHp / maxHp;
    }
}

    public void changeHp(int change){
        RubyHp=Mathf.Clamp(RubyHp+change,RubyMinHp,RubyMaxHp);
        UIcontroller.instance.HpShow(RubyHp,RubyMaxHp);
    }

十八 添加音效

1. 添加背景音乐

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

public class audioManager : MonoBehaviour
{
    public static audioManager instance{get;private set;}
    // Start is called before the first frame update
    void Start()
    {
        instance=this;
    }
    public void AudioPlay(AudioClip clip){
        GetComponent<AudioSource>().PlayOneShot(clip);
    }
}

public AudioClip eatAudioClip;

 audioManager.instance.AudioPlay(eatAudioClip);

    private AudioSource walkAudioSource;
    private void Start() {
        walkAudioSource=GetComponent<AudioSource>();
    }
    void Update()
    {
         if(moveVector.magnitude!=0){
            lookVector=moveVector;
            anim.SetFloat("lookX",lookVector.x);
            anim.SetFloat("lookY",lookVector.y);
            if(!walkAudioSource.isPlaying){
                walkAudioSource.Play();
            }
        }
        else
        {
            walkAudioSource.Stop();
        }
    }

十九 NPC交互

private RaycastHit2D rubyRay;

rubyRay=Physics2D.Raycast(rubyBody.position,lookVector,1f,LayerMask.GetMask("NPC"));
if (rubyRay.collider!=null)
        {
            Debug.Log("NPC");
        }

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

public class NPC : MonoBehaviour
{
    public void ShowDialogue(){
        transform.Find("showCanvas").gameObject.SetActive(true);
        transform.Find("hideCanvas").gameObject.SetActive(false);
        Invoke("hideDialogue",4f);                      //对话框会在4秒后自动消失
    }
    public void hideDialogue(){
        transform.Find("showCanvas").gameObject.SetActive(false);
        transform.Find("hideCanvas").gameObject.SetActive(true);
    }
}

        if (Input.GetKeyDown(KeyCode.E))
        {
            if (rubyRay.collider!=null)
                {
                    rubyRay.collider.gameObject.GetComponent<NPC>().ShowDialogue();
                }
        }

二十 子弹数量及UI

    private int currentBullet=10;
    private int maxBullet=99;

    public void changeBullet(int bullet)
    {
        currentBullet =Mathf.Clamp(currentBullet+bullet,0,maxBullet);
        UIcontroller.instance.SetBulletTxt(currentBullet,maxBullet);
    }

        if (Input.GetKeyDown(KeyCode.J))
        {
            if(currentBullet>0)
            {
                GameObject bullet= Instantiate(bulletPreb,rubyBody.position+new Vector2(0,0.5f),Quaternion.identity);
                bullet.GetComponent<bullet>().BulletMove(lookVector,300);
                anim.SetTrigger("launch");
                audioManager.instance.AudioPlay(lunachAudioClip);
                changeBullet(-1);
            }
            else
            {
                Debug.Log("Out of Bullet!!!");
            }
        }

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

public class collectThings : MonoBehaviour
{
    // Start is called before the first frame update
    public ParticleSystem strawEffect;
    public AudioClip eatAudioClip;
    private void OnTriggerEnter2D(Collider2D other) {
        if (other.tag=="Player")
        {
            if (other.GetComponent<MyRuby>().getHp()<other.GetComponent<MyRuby>().getMaxHp())
            {
                if(gameObject.name=="CollectibleBullet")
                {
                    other.GetComponent<MyRuby>().changeBullet(10);
                }
                else
                {
                    other.GetComponent<MyRuby>().changeHp(1);
                }
                
                Instantiate(strawEffect,transform.position,Quaternion.identity);
                audioManager.instance.AudioPlay(eatAudioClip);
                Destroy(this.gameObject);
            }
        }
    }
}

    public void SetBulletTxt(int currentBullet,int maxBullet){
        if(currentBullet<=maxBullet & currentBullet>=0){
            bulletTxt.text=currentBullet+" / "+maxBullet;
        }        
    }