Summer vacation study record

1. Map making

By means of windows=>2D=>Tilemap Put the desired map in this box , You can click the brush to add a map to the world map . And you need to create the game object first Tilemap.
Add the required game objects to the map .

2. The enemy made

Animate the enemy , And make corresponding animation state machine control .

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

public class Enemy : MonoBehaviour
{
    
    public float speed = 1f; // Movement speed 
    Animator animator;
    Rigidbody2D rigBody;
    public Vector2 movePlay; // Move the vector 
    public float moveTimer; // Move timer 
    public float moveTime = 1; //  Move time 
    bool IsMove = false;
    Vector3 originPos;
    Vector3 endPos;
    float timers = 0;
    int direction = 1;
    public int Bloodvalue;
    // Must be in FixedUpdate in 
    IEnumerator TestIfTurn()
    {
    
        originPos = transform.position;
        yield return new WaitForSeconds(0.05f);
        endPos = transform.position;
        if (Vector3.Distance(originPos, endPos) <= 0.001f)
        {
    
            direction = direction * (-1);
        }
    }
    void Start()
    {
    
        rigBody = GetComponent<Rigidbody2D>();
        animator = GetComponent<Animator>();
        // Use a function that switches the direction vector 
        moveAuto();
    }

    // Update is called once per frame
    void Update()
    {
    
        moveTimer -= Time.deltaTime;
        // Judge whether the timer has finished 
        if (moveTimer >= 2)
        {
    
            Vector3 thisScale = this.transform.localScale;
            Vector2 position = rigBody.position;
            position += movePlay * speed * Time.deltaTime;
            rigBody.MovePosition(position); // Call the method of rigid body position assignment 

        }
        else if (moveTimer <= 2 && moveTimer >= 0)
        {
    
            animator.SetFloat("TransformX", 0);
            animator.SetFloat("TransformY", 0);
        }
        else if (moveTimer <= 0)
        {
    
            // When finished, call again , Regain direction 
            moveAuto();
            // The timer is reassigned 
            moveTimer = moveTime;
        }

    }


    void moveAuto()
    {
    
        // Random generation -1,0,1 The number of , Because of the random number Next Do not take the maximum value , This is used here （-1,2）
        // Here, a random motion vector is generated 
        System.Random rd = new System.Random();
        float x = rd.Next(-1, 2);
        float y = rd.Next(-1, 2);
        movePlay = new Vector2(x, y);
        // Switch direction 
        Vector3 thisScale = this.transform.localScale;
        if (x != 0)
        {
    
            thisScale.x = Math.Abs(thisScale.x) * x;
            transform.localScale = thisScale;
        }
        animator.SetFloat("TransformX", x);
        animator.SetFloat("TransformY", y);
    }
    private void OnTriggerEnter(Collider other)
    {
    
        if (other.CompareTag("Bullet"))
        {
    
            Destroy(other.gameObject);
        }
    }
    void Blood(int value)
    {
    
        Bloodvalue -= value;
    }
}

3. Protagonist production

It is similar to the enemy , Make animation first , Adding animation to the animation state machine

The code is as follows

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

public class Player : MonoBehaviour
{
    
    public Animator anim;
    public float runSpeed;
    public bool run;
    private float stopX,stopY;
    private Rigidbody2D rigidbody;
    void Start()
    {
    
        rigidbody = GetComponent<Rigidbody2D>();
        anim = GetComponent<Animator>();
    }

    // Update is called once per frame
    void Update()
    {
    
        Run();
    }
    void Run()
    {
    
       
        float moveDir = Input.GetAxis("Horizontal");
        float moveDer = Input.GetAxis("Vertical");
        Vector2 platerVel = new Vector2(moveDir * runSpeed, moveDer * runSpeed);
        rigidbody.velocity = platerVel;
        if (platerVel != Vector2.zero)
        {
    
            anim.SetBool("Run", true);
            stopX = moveDir;
            stopY = moveDer;
        }
        else
        {
    
            anim.SetBool("Run", false);
        }
        anim.SetFloat("InputX", stopX);
        anim.SetFloat("InputY", stopY);
    }
}

Gun code

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

public class Gun : MonoBehaviour
{
    
    public GameObject Prefab;
    public Transform Shoottransform;
    public GameObject Player;
    private float m_nextFire;

    /// <summary>
    ///  Firing rate 
    /// </summary>
    public float FireRate = 2.0f;

    /// <summary>
    ///  The target of the bullet 
    /// </summary>
    public GameObject Bullet;

    /// <summary>
    ///  Bullet speed 
    /// </summary>
    public float BulletSpeed;
    void FixedUpdate()
    {
    
        Shoot();
        //  Get mouse coordinates and convert them to world coordinates 
        Vector3 m_mousePosition = Input.mousePosition;
        m_mousePosition = Camera.main.ScreenToWorldPoint(m_mousePosition);
        //  the reason being that 2D, In less than z Axis . Make z The value of the axis is 0, So the coordinates of the mouse are (x,y) On the plane 
        m_mousePosition.z = 0;

        //  Weapon orientation angle 
        float m_weaponAngle = Vector2.Angle(m_mousePosition - this.transform.position, Vector2.right);
        if (transform.position.x < m_mousePosition.x)
        {
    
            m_weaponAngle = -m_weaponAngle;
        }

        // Judge the pros and cons of weapons 
        if ( transform.localScale.x > 0)
        {
    
            transform.localScale = new Vector3(-transform.localScale.x, transform.localScale.y, transform.localScale.z);
        }
        else if ( transform.localScale.x < 0)
        {
    
            transform.localScale = new Vector3(-transform.localScale.x, transform.localScale.y, transform.localScale.z);
        }

        //  Change the final angle 
        transform.eulerAngles = new Vector3(0, 0, m_weaponAngle);
    }
    void Shoot()
    {
    
        m_nextFire = m_nextFire + Time.fixedDeltaTime;
 
        if(Input.GetMouseButton(0) && m_nextFire>FireRate)
        {
    
            //  Get mouse coordinates and convert them to world coordinates 
            Vector3 m_mousePosition = Input.mousePosition;
            m_mousePosition = Camera.main.ScreenToWorldPoint(m_mousePosition);
            //  the reason being that 2D, In less than z Axis . Make z The value of the axis is 0, So the coordinates of the mouse are (x,y) On the plane 
            m_mousePosition.z = 0;
 
            //  Bullet angle 
            float m_fireAngle = Vector2.Angle(m_mousePosition - this.transform.position, Vector2.up);
 
            if(m_mousePosition.x>this.transform.position.x)
            {
    
                m_fireAngle = -m_fireAngle;
            }
 
            //  Zero the timer 
            m_nextFire = 0;
 
            //  Generate bullets 
            GameObject m_bullet = Instantiate(Bullet, transform.position, Quaternion.identity) as GameObject;
 
            //  Speed 
            m_bullet.GetComponent<Rigidbody2D>().velocity = ((m_mousePosition-transform.position).normalized * BulletSpeed);
 
            //  angle 
            m_bullet.transform.eulerAngles = new Vector3(0, 0, m_fireAngle);
 
        }
    }
}

Camera follow code

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

public class MainCamera : MonoBehaviour
{
    
    public Transform target;
    public float smoothing;
    internal static readonly object main;

    // Define two positions to limit camera movement 
    // Start is called before the first frame update
    void Start()
    {
    

    }
    void Update()
    {
    

    }
    void LateUpdate()
    {
    
        if (target != null)
        {
    
            Vector3 targetPos = target.position;
            transform.position = Vector3.Lerp(transform.position, targetPos, smoothing);
        }
    }
}