---

Player.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class Player : MonoBehaviour
{
    public int points;
 
    public Projectile projectilePrefab;
 
    public float shootInterval;
    public float shootTimer;
 
    public Transform shootPoint;
 
    void Update()
    {
        Move();
 
        shootTimer -= Time.deltaTime;
 
        Shoot();
    }
 
    void Shoot()
    {
        if(shootTimer <= 0)
        {
            Instantiate(projectilePrefab, shootPoint.position, Quaternion.identity);
            shootTimer = shootInterval;
        }
    }
 
    void Move()
    {
        if (Input.GetMouseButton(0))
        {
            Vector2 mousePos = Input.mousePosition;
            Vector2 realPos = Camera.main.ScreenToWorldPoint(mousePos);
            transform.position = realPos;
        }
    }
}














Mover.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class Mover : MonoBehaviour
{
    public float speed = 2f;
 
    void Start()
    {
       Destroy(gameObject, 5f);
    }
 
    void Update()
    {
        transform.position = (Vector2)transform.position + Vector2.down * (speed + GameController.gameSpeed) * Time.deltaTime;
    }
 
}

Obstacle.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class Obstacle : MonoBehaviour
{
    private void OnTriggerEnter2D(Collider2D collision)
    {
        if(collision.tag == "Player")
        {
            Destroy(collision.gameObject);
        }
    }
}

Item.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class Item : MonoBehaviour
{
    private void OnTriggerEnter2D(Collider2D collision)
    {
        if (collision.tag == "Player")
        {
            Player player = collision.GetComponent<Player>();
            player.points++;
            Destroy(this.gameObject);
        }
    }
}





Projectile.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class Projectile : MonoBehaviour
{
    public float speed = 10f;
 
    void Start()
    {
        Destroy(gameObject, 1f);
    }
 
    void Update()
    {
        transform.position = (Vector2)transform.position + Vector2.up * speed * Time.deltaTime;
    }
 
    private void OnTriggerEnter2D(Collider2D collision)
    {
        if (collision.tag == "Obstacle")
        {
            Destroy(collision.gameObject);
            Destroy(gameObject);
        }
    }
}
 

GameController.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class GameController : MonoBehaviour
{
    public static float gameSpeed;
 
    [Range(0, 5)]
    public float gameSpeedRegulator;
    public float speedRate = 0.5f;
    public float gameSpeedMax = 5;
 
    void Update()
    {
        if (gameSpeedRegulator <= gameSpeedMax)
        {
            gameSpeedRegulator += speedRate * Time.deltaTime;
        }
        gameSpeed = gameSpeedRegulator;
    }
}

 
 





Spawner.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class Spawner : MonoBehaviour
{
    public GameObject prefab;
 
    public Transform borderRight;
    public Transform borderLeft;
 
    public float spawnInterval;
    public float spawnTimer;
 
 
    void Update()
    {
        spawnTimer -= Time.deltaTime;
 
        if(spawnTimer <= 0)
        {
            Spawn();
        }
    }
 
    void Spawn() {
 
        float randomX = Random.Range(borderLeft.position.x, borderRight.position.x);
 
        Vector2 newPosition = transform.position;
        newPosition.x = randomX;
 
        Instantiate(prefab, newPosition, Quaternion.identity);
        spawnTimer = spawnInterval;
    }
 
}