Unity 2D 效应器与来回移动的实现

1.效应器

Point Effector 2D： 点效应器。进入区域，吸引或排斥物体

Area Effector 2D： 区域效应器，可以用来做马里奥的管道移动效果

Surface Effector 2D ：表面效应器。实现传送带效果

PlatForm Effector 2D：平台效应器。实现2D游戏里面的台阶效果

2.控制移动

1// Update is called once per frame
2    void Update () {
3        if (Input.GetKey(KeyCode.A))
4        {
5            MoveLeft();
6        }
7        if (Input.GetKey(KeyCode.D))
8        {
9            MoveRight();
10        }
11        if (Input.GetKeyDown(KeyCode.Space))
12        {
13            Jump();
14        }
15    }
16        void MoveLeft()
17    {
18        var v = rgbd.velocity;
19        v.x = -movespeed;
20        rgbd.velocity = v;
21        //gameObject.GetComponent<Rigidbody2D>().AddForce(Vector2.left * movespeed, ForceMode2D.Force);
22    }
23
24    void MoveRight()
25    {
26        var v = rgbd.velocity;
27        v.x = movespeed;
28        rgbd.velocity = v;
29        //gameObject.GetComponent<Rigidbody2D>().AddForce(Vector2.right * movespeed, ForceMode2D.Force);
30    }
31
32    public void Jump()
33    {
34        if (isground)
35        {
36            gameObject.GetComponent<Rigidbody2D>().AddForce(Vector2.up * jumpspeed, ForceMode2D.Impulse);
37            isground = false;
38        }
39        
40    }

3.敌人来回移动

1using System.Collections;
2using System.Collections.Generic;
3using UnityEngine;
4
5public class laihui : MonoBehaviour {
6
7    public float movespeed=3.0f;
8    private Vector2 currentposition;
9    public float distnation=10.0f;
10    private int face = 1;
11
12    // Use this for initialization
13    void Start () {
14        currentposition = gameObject.transform.position;
15    }
16    
17    // Update is called once per frame
18    void Update () {
19        if (face == 1)
20        {
21            gameObject.transform.Translate(Vector2.right * movespeed * Time.deltaTime);
22        }
23        if (face == 0)
24        {
25            gameObject.transform.Translate(Vector2.left * movespeed * Time.deltaTime);
26        }
27        if (gameObject.transform.position.x > currentposition.x+distnation)
28        {
29            face = 0;
30        }
31        if (gameObject.transform.position.x < currentposition.x)
32        {
33            face = 1;
34        }
35    }
36}