Unity3D基础项目（三）：水果忍者代码

• 创建刀光

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

public class CutFruit : MonoBehaviour {

    private GameObject knife;
    private Vector3 startPos;
    private Vector3 endPos;
    private GameObject canver;
    void Start () {
        knife =  (GameObject)Resources.Load("Prefabs/Knife");
        canver = GameObject.Find("Canvas");
        Debug.Log(knife.name);
    }
    
    
    void Update () {
        if (Input.GetMouseButtonDown(0))
        {
            startPos = Input.mousePosition;
        }
        if (Input.GetMouseButtonUp(0))
        {
            endPos = Input.mousePosition;

            if (endPos != startPos)
            {
                // 计算夹角
                float angle = (endPos.y - startPos.y) / (endPos.x - startPos.x);
                float angle1 = Mathf.Atan(angle);
                float angle2 = angle1 * 180 / Mathf.PI;

                // 计算位置
                Vector3 knifPos =(startPos + (endPos - startPos) / 2);

                // 实例化
                GameObject knif = Instantiate(knife);
                knif.transform.position = knifPos;
                knif.transform.rotation = Quaternion.AngleAxis(angle2, Vector3.forward);
                knif.transform.parent = canver.transform;
                Destroy(knif, 1.5f);
            }    
        }
    }
}

• 创建水果生成器

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

public class Friut : MonoBehaviour {

    public GameObject canvas;
    // 水果集合
    public  GameObject[] fruits;

    void Start () {
        canvas = GameObject.Find("Canvas");
        // 定时执行某个方法，（方法名，多少秒后执行，重复执行间隔）
        InvokeRepeating("Creat", 0f, 4f);
    }

    private void Creat()
    {
        int index = Random.Range(0, 4);
        GameObject fruit = Instantiate(fruits[index]) as GameObject;
        fruit.transform.parent = canvas.transform;
        fruit.GetComponent().position = new Vector3(Random.Range(35f, Screen.width - 35f), 50, 0);
        fruit.AddComponent().AddForce(new Vector3(0f, 90f, 0f), ForceMode.Impulse);
    }
}

using UnityEngine;
// 刀光对象检测物体
public class CutTrigger : MonoBehaviour {

    
    void Start () {
        
    }

    private void OnTriggerEnter(Collider other)
    {
        // 可以获取水果类型了
        Debug.Log(other.name);
        if (other.tag == "Pear")
        {   
            InitFruit("Prefabs/pear01", other.gameObject); 
            // 分数加1
        }
        if (other.tag == "Apple")
        {
            InitFruit("Prefabs/apple01", other.gameObject);
            // 分数加1
        }
        if (other.tag == "Banana")
        {
            InitFruitTwo("Prefabs/banana", other.gameObject);
            // 分数加2
        }
        if (other.tag == "Gapple")
        {
            InitFruit("Prefabs/gapple01", other.gameObject);
            // 分数加10
        }
        if (other.tag == "Life")
        {
            InitFruitTwo("Prefabs/life", other.gameObject);
            // 生命-1
        }

    }
    // 一种图片水果
    public void InitFruit(string path, GameObject obj)
    {
        // 切到水果了，创建切后的水果对象
        GameObject fruit = Instantiate(Resources.Load(path) as GameObject);
        fruit.transform.position = obj.transform.position;
        fruit.transform.parent = obj.transform.parent;
        fruit.transform.rotation = obj.transform.rotation;
        // 销毁原水果
        Destroy(obj);
        // 销毁切后的水果对象
        Destroy(fruit, 0.2f);
    }
    // 两种图片水果
    public void InitFruitTwo(string path, GameObject obj)
    {
        // 切到水果了，创建切后的水果对象
        GameObject fruit = Instantiate(Resources.Load(path + "02") as GameObject);
        fruit.transform.position = obj.transform.position - new Vector3(0,35,0);
        fruit.transform.parent = obj.transform.parent;
        fruit.transform.rotation = obj.transform.rotation;
        GameObject fruit1 = Instantiate(Resources.Load(path + "01" ) as GameObject);
        fruit1.transform.position = obj.transform.position - new Vector3(0, 65, 0);
        fruit1.transform.parent = obj.transform.parent;
        fruit1.transform.rotation = obj.transform.rotation;
        // 销毁原水果
        Destroy(obj);
        // 销毁切后的水果对象
        Destroy(fruit, 0.2f);
        Destroy(fruit1, 0.2f);
    }
}