GameManager.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
using System;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO;
using Random = UnityEngine.Random;

[Serializable]
public class PlayerData
{
	public int coins;
	public int[] max;
	public int[] progress;
	public int[] currentProgress;
	public int[] reward;
	public string[] missionType;
	public int[] characterCost;
}

public class GameManager : MonoBehaviour {

	public static GameManager gm;
	public int coins;
	public int[] characterCost;

	public int characterIndex;

	private MissionBase[] missions;
	private string filePath;

	private void Awake()
	{
		if(gm == null)
		{
			gm = this;
		}
		else if(gm != this)
		{
			Destroy(gameObject);
		}
		DontDestroyOnLoad(gameObject);

		filePath = Application.persistentDataPath + "/save.sav";

		missions = new MissionBase[2];

		if (File.Exists(filePath))
		{
			Load();
		}

		else
		{
			for (int i = 0; i < missions.Length; i++)
			{
				GameObject newMission = new GameObject("Mission" + i);
				newMission.transform.SetParent(transform);
				MissionType[] missionType = { MissionType.SingleRun, MissionType.TotalMeter, MissionType.FishesSingleRun };
				int randomType = Random.Range(0, missionType.Length);
				if (randomType == (int)MissionType.SingleRun)
				{
					missions[i] = newMission.AddComponent<SingleRun>();

				}
				else if (randomType == (int)MissionType.TotalMeter)
				{
					missions[i] = newMission.AddComponent<TotalMeters>();

				}
				else if (randomType == (int)MissionType.FishesSingleRun)
				{
					missions[i] = newMission.AddComponent<FishesSingleRun>();

				}

				missions[i].Created();
			}
		}
		
	}

	public void Save()
	{
		BinaryFormatter bf = new BinaryFormatter();
		FileStream file = File.Create(filePath);

		PlayerData data = new PlayerData();

		data.coins = coins;

		data.max = new int[2];
		data.progress = new int[2];
		data.currentProgress = new int[2];
		data.reward = new int[2];
		data.missionType = new string[2];
		data.characterCost = new int[characterCost.Length];

		for (int i = 0; i < 2; i++)
		{
		data.max[i] = missions[i].max;
		data.progress[i] = missions[i].progress;
		data.currentProgress[i] = missions[i].currentProgress;
		data.reward[i] = missions[i].reward;
		data.missionType[i] = missions[i].missionType.ToString();
		}

		for (int i = 0; i < characterCost.Length; i++)
		{
		data.characterCost[i] = characterCost[i];
		}

		bf.Serialize(file, data);
		file.Close();
	}

	void Load()
	{
		BinaryFormatter bf = new BinaryFormatter();
		FileStream file = File.Open(filePath, FileMode.Open);

		PlayerData data = (PlayerData)bf.Deserialize(file);
		file.Close();

		coins = data.coins;

		for (int i = 0; i < 2; i++)
		{
			GameObject newMission = new GameObject("Mission" + i);
			newMission.transform.SetParent(transform);
			if(data.missionType[i] == MissionType.SingleRun.ToString())
			{
				missions[i] = newMission.AddComponent<SingleRun>();
				missions[i].missionType = MissionType.SingleRun;
			}
			else if (data.missionType[i] == MissionType.TotalMeter.ToString())
			{
				missions[i] = newMission.AddComponent<TotalMeters>();
				missions[i].missionType = MissionType.TotalMeter;
			}
			else if (data.missionType[i] == MissionType.FishesSingleRun.ToString())
			{
				missions[i] = newMission.AddComponent<FishesSingleRun>();
				missions[i].missionType = MissionType.FishesSingleRun;
			}

			missions[i].max = data.max[i];
			missions[i].progress = data.progress[i];
			missions[i].currentProgress = data.currentProgress[i];
			missions[i].reward = data.reward[i];
		}

		for (int i = 0; i < data.characterCost.Length; i++)
		{
			characterCost[i] = data.characterCost[i];
		}
	}

	// Use this for initialization
	void Start () {
		
	}
	
	// Update is called once per frame
	void Update () {
		
	}

	public void StartRun(int charIndex)
	{
		characterIndex = charIndex;
		SceneManager.LoadScene("Game");
	}

	public void EndRun()
	{
		SceneManager.LoadScene("Menu");
	}

	public MissionBase GetMission(int index)
	{
		return missions[index];
	}

	public void StartMissions()
	{
		for (int i = 0; i < 2; i++)
		{
			missions[i].RunStart();
		}
	}

	public void GenerateMission(int i)
	{
		Destroy(missions[i].gameObject);

		GameObject newMission = new GameObject("Mission" + i);
		newMission.transform.SetParent(transform);
		MissionType[] missionType = { MissionType.SingleRun, MissionType.TotalMeter, MissionType.FishesSingleRun };
		int randomType = Random.Range(0, missionType.Length);
		if (randomType == (int)MissionType.SingleRun)
		{
			missions[i] = newMission.AddComponent<SingleRun>();

		}
		else if (randomType == (int)MissionType.TotalMeter)
		{
			missions[i] = newMission.AddComponent<TotalMeters>();

		}
		else if (randomType == (int)MissionType.FishesSingleRun)
		{
			missions[i] = newMission.AddComponent<FishesSingleRun>();

		}

		missions[i].Created();

		FindObjectOfType<Menu>().SetMission();
	}
}