literally half of the game

Assets/Scripts/GameManager.cs

@@ -0,0 +1,63 @@
+using System;
+using UnityEngine;
+
+public class GameManager : MonoBehaviour
+{
+	#region Statication
+
+	public static GameManager instance;
+
+	private void Awake()
+	{
+		if (instance != null && instance != this)
+		{
+			Destroy(gameObject);
+			return;
+		}
+		DontDestroyOnLoad(this);
+		instance = this;
+	}
+
+	#endregion
+	//this is just for general functions and variables that will be reused
+	public Camera camera;
+	public GameObject pauseMenu;
+	public Vector3 GetMouseWorldPos()
+	{
+		return camera.ScreenToWorldPoint(Input.mousePosition);
+	}
+	
+	public void SetPause(bool state)
+	{
+		if (state)
+		{
+			Time.timeScale = 0f;
+		}
+		else
+		{
+			Time.timeScale = 1f;
+		}
+	}
+
+	public void SetPauseMenu()
+	{
+		if (!pauseMenu.activeSelf)
+		{
+			SetPause(true);
+			pauseMenu.SetActive(true);
+		}
+		else
+		{
+			pauseMenu.SetActive(false);
+			SetPause(false);
+		}
+	}
+
+	private void Update()
+	{
+		if (Input.GetKeyDown(KeyCode.Escape))
+		{
+			SetPauseMenu();
+		}
+	}
+}