1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class Player : MonoBehaviour
6. {
7.     // configuration parameters
8.     [SerializeField] float moveSpeed = 10f;
9.     [SerializeField] float padding = 1f;
10.     [SerializeField] GameObject laserPrefab;
11.     [SerializeField] float projectileSpeed = 10f;
12.  
13.     float xMin;
14.     float xMax;
15.     float yMin;
16.     float yMax;
17.  
18.     // Start is called before the first frame update
19.     void Start()
20.     {
21.         transform.position = new Vector3(0, -8, 0);
22.         SetUpMoveBoundaries();
23.     }
24.  
25.     // Update is called once per frame
26.     void Update()
27.     {
28.         Move();
29.         Fire();
30.     }
31.  
32.     private void Fire()
33.     {
34.         if (Input.GetButtonDown("Fire1"))
35.         {
36.             GameObject laser = Instantiate
37.                 (
38.                 laserPrefab,
39.                 transform.position,
40.                 Quaternion.identity
41.                 ) as GameObject ;
42.             laser.GetComponent<Rigidbody2D>().velocity = new Vector2(0, projectileSpeed);
43.         }
44.     }
45.  
46.     private void Move()
47.     {
48.         float deltaX = Input.GetAxis("Horizontal") * Time.deltaTime * moveSpeed;
49.         float deltaY = Input.GetAxis("Vertical") * Time.deltaTime * moveSpeed;
50.  
51.         float newXPos = Mathf.Clamp(transform.position.x + deltaX, xMin, xMax);
52.         float newYPos = Mathf.Clamp(transform.position.x + deltaY, yMin, yMax);
53.  
54.         transform.position = new Vector2(newYPos, newXPos);
55.     }
56.  
57.     private void SetUpMoveBoundaries()
58.     {
59.         Camera gameCamera = Camera.main;
60.         xMin = gameCamera.ViewportToWorldPoint(new Vector3(0, 0, 0)).x + padding;
61.         xMax = gameCamera.ViewportToWorldPoint(new Vector3(1, 0, 0)).x - padding;
62.         yMin = gameCamera.ViewportToWorldPoint(new Vector3(0, 0, 0)).y + padding;
63.         yMax = gameCamera.ViewportToWorldPoint(new Vector3(0, 1, 0)).y - padding;
64.     }
65. }