2.1

Unity

Speed Down小游戏

添加背景，使背景运动，添加尖刺

背景图X:Y比例为9:16

背景动画设计代码：

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

public class AnimationBackGround : MonoBehaviour
{
    Material material;
    public Vector2 movement;
    public Vector2 speed;

    void Start()
    {
        material= GetComponent<Renderer>().material;
    }

    // Update is called once per frame
    void Update()
    {
        //deltaTime一秒钟运行50次左右
        movement += speed * Time.deltaTime;
        material.mainTextureOffset = movement;
    }
}

由此可以得知，通过脚本可以获得所有组件及其操作

泛型：一个方法，适用于所有类型，且类型安全

T GetComponent<T>() where T : Component
{
    return (T)foundComponent;
}

//泛型的使用
Renderer r = MyMethod<Renderer>();  // T 被替换为 Renderer
AudioSource a = MyMethod<AudioSource>();  // T 被替换为 AudioSource

由此可知，若要得到Materials，需要先得到Renderer

mainTextureOffset：

mainTextureOffset这是材质的主纹理（Main Texture/Albedo）的UV偏移量

每一帧都让背景偏移一段，用以制造循环效果

代码

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

public class GameManager : MonoBehaviour
{
    static GameManager instance;
    public Text timeScore;
    public GameObject gameoverUI;


    private void Awake()
    {
        if (instance != null)
        {
            Destroy(gameObject);
        }
        instance = this;
    }

    
    void Update()
    {
        timeScore.text=Time.timeSinceLevelLoad.ToString("00");
    }

    public void RestartGame()
    {
        SceneManager.LoadScene(SceneManager.GetActiveScene().name);
        Time.timeScale = 1;
    }
    public void Quit()
    {
        Application.Quit();
    }

    public static void GameOver(bool dead)
    {
        if (dead)
        {
            instance.gameoverUI.SetActive(true);
            Time.timeScale = 0f;
        }
    }
}

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

public class StartLine : MonoBehaviour
{
    public List<GameObject> platforms = new List<GameObject>();

    public float spwanTime;
    private float countTime;
    private Vector3 spwanPosition;

    int spikeNum = 0;

    //随机生成函数

    void Update()
    {
        SpawnPlatform();
    }

    public void SpawnPlatform()
    {
        countTime += Time.deltaTime;
        spwanPosition = transform.position;
        spwanPosition.x = Random.Range(-3.5f, 3.5f);

        if (countTime >= spwanTime)
        {
            CreatePlatform();
            countTime = 0;
        }
    }

    public void CreatePlatform()
    {
        //platforms[];
        int index = Random.Range(0, platforms.Count);
        if (index == 5)
        {
            spikeNum++;
        }
        if (spikeNum > 1)
        {
            spikeNum = 0;
            countTime = spwanTime;
            return;
        }

        GameObject newPlatform=Instantiate(platforms[index], spwanPosition, Quaternion.identity);
        newPlatform.transform.SetParent(this.gameObject.transform);
    }
}

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

public class LineRender : MonoBehaviour
{
    LineRenderer line;
    public Transform startPoint;
    public Transform endPoint;
    void Start()
    {
        line = GetComponent<LineRenderer>();
    }

    // Update is called once per frame
    void Update()
    {
        line.SetPosition(0, startPoint.position);
        line.SetPosition(1, endPoint.position);
    }
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Assertions.Must;

public class PlayerController : MonoBehaviour
{
    Rigidbody2D rb;
    Animator animator;
    public float speed;
    float xVlocity;
    float yVlocity;

    public bool isOnGround;
    public float checkRadius;
    public LayerMask platform;
    public GameObject groundCheck;

    bool playerdead;

    void Start()//通常用于获取组件
    {
        rb = GetComponent<Rigidbody2D>();
        animator = GetComponent<Animator>();
    }

    // Update is called once per frame
    void Update()
    {
        isOnGround = Physics2D.OverlapCircle(groundCheck.transform.position, checkRadius, platform);
        animator.SetBool("isonground",isOnGround);
        Movement();
    }

    void Movement()
    {
        xVlocity = Input.GetAxisRaw("Horizontal");//水平横轴移动
        rb.velocity = new Vector2(xVlocity*speed,rb.velocity.y);

        animator.SetFloat("speed", Mathf.Abs(rb.velocity.x));//跑动动画

        if (xVlocity != 0)
        {
            transform.localScale = new Vector3(xVlocity,1,1);
        }
    }

    private void OnCollisionEnter2D(Collision2D other)
    {
        if (other.gameObject.CompareTag("Fan"))
        {
            rb.velocity = new Vector2(rb.velocity.x, 10f);
        }
        else if (other.gameObject.CompareTag("Jump"))
        {
            rb.velocity = new Vector2(rb.velocity.x, 10f);
        }
    }

    private void OnTriggerEnter2D(Collider2D other)
    {
        if (other.CompareTag("Spike"))
        {
            animator.SetTrigger("Hit");

        }
    }

    public void PlayerDead()
    {
        playerdead = true;
        GameManager.GameOver(playerdead);
    }

    private void OnDrawGizmosSelected()
    {
        Gizmos.color = Color.blue;
        Gizmos.DrawWireSphere(groundCheck.transform.position,checkRadius);
    }
}

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

public class JumpPlatform : MonoBehaviour
{
    Animator Animator;
    void Start()
    {
        Animator=GetComponent<Animator>();
    }

    private void OnCollisionEnter2D(Collision2D other)
    {
        if (other.gameObject.CompareTag("Player"))
        {
            Animator.Play("JumpOn");
        }
    }
}

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

public class FanPlatform : MonoBehaviour
{
    Animator Animator;
    void Start()
    {
        Animator=GetComponent<Animator>();
    }

    private void OnCollisionEnter2D(Collision2D other)
    {
        if (other.gameObject.CompareTag("Player"))
        {
            Animator.Play("Fan_on");
        }
    }
}

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

public class Platform : MonoBehaviour
{
    Vector3 movement;
    public float speed;
    GameObject topLine;
    // Start is called before the first frame update
    void Start()
    {
        movement.y = speed;
        topLine = GameObject.Find("Topline");
    }

    // Update is called once per frame
    void Update()
    {
        MovePlatform();
    }

    void MovePlatform()
    {
        transform.position += movement * Time.deltaTime;
        if(transform.position.y >= topLine.transform.position.y)
        {
            Destroy(gameObject);
        }
    }
}

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

public class FanPlatform : MonoBehaviour
{
    Animator Animator;
    void Start()
    {
        Animator=GetComponent<Animator>();
    }

    private void OnCollisionEnter2D(Collision2D other)
    {
        if (other.gameObject.CompareTag("Player"))
        {
            Animator.Play("Fan_on");
        }
    }
}