스네이크 게임 - 게임 오버 판정

 

스네이크 머리가 벽에 닿이거나 꼬리에 닿인 경우,
게임 오버 판정이 되도록 코드를 추가하였다.

게임 오버가 되었을 경우,
게임을 재시작하거나 메인 메뉴로 돌아갈 수 있도록 구성하였고
그에 대한 코드를 GameManager에 작성하여 관리하였다.

게임 오버 화면 + RetryButton Inspector

"재시도" 버튼을 클릭하면 게임이 초기화된 상태로 다시 시작하고
"메인으로" 버튼을 클릭하면 메인 화면으로 이동한다.

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

public class GameManager : MonoBehaviour
{
    // for Setting
    public GameObject inSetting;
    public GameObject mainButton;

    // Snake Var
    public GameObject snake;

    // Score Var
    public Text scoreText;

    // Pause Var
    bool isPause = false;
    public Text pauseText;

    // for Game Over
    public GameObject gameOver;

    void Update()
    {
        // Run in GameScene
        if (SceneManager.GetActiveScene().name == "GameScene")
        {
            // Load Score from Snake Script
            Snake snakeLogic = snake.GetComponent<Snake>();
            scoreText.text = string.Format("{0:n0}", snakeLogic.score); // {0:n0}: 세자리마다 쉼표로 나눠주는 숫자 양식
        }
    }

    // Start Button
    public void GameStart()
    {
        // Change Scene
        SceneManager.LoadScene(1);
    }

    // Setting Button
    public void GameSetting()
    {
        // On or Off the Object
        inSetting.SetActive(true);
        mainButton.SetActive(false);
    }

    // Back Button in Setting
    public void SettingBack()
    {
        // On or Off the Object
        inSetting.SetActive(false);
        mainButton.SetActive(true);
    }

    // Pause Game
    public void TimePause()
    {
        if (isPause)
        {
            // Resume
            Time.timeScale = 1;
            pauseText.text = "일시정지";
            isPause = false;
        }
        else
        {
            // Pause
            Time.timeScale = 0;
            pauseText.text = "다시시작";
            isPause = true;
        }
    }

    // Game Over
    public void GameOver()
    {
        Time.timeScale = 0;
        gameOver.SetActive(true);
    }

    // Game Retry
    public void GameRetry()
    {
        SceneManager.LoadScene(1);
        Time.timeScale = 1;
    }

    // to Main Menu
    public void GameToMain()
    {
        // Change Scene
        SceneManager.LoadScene(0);
        Time.timeScale = 1;
    }
}

 

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

public class Snake : MonoBehaviour
{
    // Game Manager
    public GameManager manager;

    // Snake Movement Var
    Vector2 dir = 1 * Vector2.right;
    Vector2 dirTemp = 1 * Vector2.right;
    private float size = 1;

    // Snake Direction Var
    float h;
    float v;
    bool isHorizonMove;

    // Mobile Key Var
    int up_Value;
    int down_Value;
    int left_Value;
    int right_Value;
    bool up_Down;
    bool down_Down;
    bool left_Down;
    bool right_Down;
    bool up_Up;
    bool down_Up;
    bool left_Up;
    bool right_Up;

    // Snake Tail Var & Prefab
    List<Transform> tail = new List<Transform>();
    public GameObject tailPrefab;

    // for Check that Snake Eat
    bool ate = false;

    // Score Var
    public int score = 0;

    void Start()
    {
        InvokeRepeating("Move", 1f, 0.05f);
    }

    void Update()
    {
        // Move Value (PC + Mobile)
        h = Input.GetAxisRaw("Horizontal") + (right_Value + left_Value);
        v = Input.GetAxisRaw("Vertical") + (up_Value + down_Value);

        // Check Button Down & Up (PC || Mobile)
        bool hDown = Input.GetButtonDown("Horizontal") || right_Down || left_Down;
        bool vDown = Input.GetButtonDown("Vertical") || up_Down || down_Down;
        bool hUp = Input.GetButtonUp("Horizontal") || right_Up || left_Up;
        bool vUp = Input.GetButtonUp("Vertical") || up_Up || down_Up;

        // Check Horizontal Move
        if (hDown)
            isHorizonMove = true;
        else if (vDown)
            isHorizonMove = false;
        else if (hUp || vUp)
            isHorizonMove = (h != 0);

        // Determine Direction
        if (h != 0 || v != 0)
        {
            dirTemp = dir;
            dir = (isHorizonMove ? new Vector2(h, 0) : new Vector2(0, v));

            // Check Snake Direction (Reverse)
            if (dir == -dirTemp)
            {
                dir = dirTemp;
            }
        }

        // Mobile Var Init
        up_Down = false;
        down_Down = false;
        left_Down = false;
        right_Down = false;
        up_Up = false;
        down_Up = false;
        left_Up = false;
        right_Up = false;
    }

    void Move()
    {
        // Store Present Position
        Vector2 v = transform.position;

        // Move
        transform.Translate(size * dir);

        // Check whether Snake Eats Food or Not
        if (ate)
        {
            // Copy the Tail in Present Position
            GameObject g = (GameObject)Instantiate(tailPrefab, v, Quaternion.identity);

            // Store the Tail
            tail.Insert(0, g.transform);

            ate = false;
        }
        // Move the Tail to the Head
        else if (tail.Count > 0)
        {
            tail.Last().position = v;

            tail.Insert(0, tail.Last());
            tail.RemoveAt(tail.Count - 1);
        }
    }

    // Button Down (Mobile)
    public void ButtonDown(string type)
    {
        switch (type)
        {
            case "U":
                up_Value = 1;
                up_Down = true;
                break;
            case "D":
                down_Value = -1;
                down_Down = true;
                break;
            case "L":
                left_Value = -1;
                left_Down = true;
                break;
            case "R":
                right_Value = 1;
                right_Down = true;
                break;
        }
    }

    // Button Up (Mobile)
    public void ButtonUp(string type)
    {
        switch (type)
        {
            case "U":
                up_Value = 0;
                up_Up = true;
                break;
            case "D":
                down_Value = 0;
                down_Up = true;
                break;
            case "L":
                left_Value = 0;
                left_Up = true;
                break;
            case "R":
                right_Value = 0;
                right_Up = true;
                break;
        }
    }

    void OnTriggerEnter2D(Collider2D col)
    {
        // Eat Food
        if (col.gameObject.tag == "Food")
        {
            ate = true;

            Destroy(col.gameObject);

            // Add Score
            Food foodLogic = col.gameObject.GetComponent<Food>();
            score += foodLogic.point;
        }
        else
        {

        }

        // Touch Border or Tail
        if (col.gameObject.tag == "Border" || col.gameObject.tag == "Snake")
        {
            manager.GameOver();
        }
    }
}

 

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