BoardManager.cs

using UnityEngine;
using UnityEngine.UI;
using System.Collections.Generic;
using ConnectFourGame;
using TMPro;

public class BoardManager : MonoBehaviour
{
    [Header("Prefabs")]
    public GameObject boardPrefab;      // Assign in Unity Editor
    public GameObject floorPrefab;      // Assign in Unity Editor
    public GameObject redCoinPrefab;    // Assign in Unity Editor
    public GameObject yellowCoinPrefab; // Assign in Unity Editor

    [Header("UI")]
    public TMP_Text messageText;           // Assign a UI Text for messages (optional)
    public Button[] columnButtons;      // Assign 7 UI buttons, one for each column
    public Button resetButton;          // Assign reset button
    //public Dropdown dropdown;           //dropdown for difficulty

    private GameObject boardObject;
    private GameObject floorObject;

    // Store coin GameObjects for each cell
    private GameObject[,] coins = new GameObject[6, 7];

    private Board board = new Board();
    private int currentPlayerId = 1; // 1: Yellow, 2: Red

    // Coin drop positions (center of each column above the board)
    private Vector3[] columnDropPositions = new Vector3[7];

    private bool gameOver = false;

    private float stationaryTime = 0f;

    private int dificulty = 7;

    private string player1Name = "Opponnent";
    private string player2Name = "Ramy";

    void Start()
    {
        // Instantiate board and floor at proper positions
        boardObject = boardPrefab;
        floorObject = floorPrefab;

        // Set up drop positions for coins (adjust values for your scene/board size)
        float startX = 36f; // Left-most column center
        float stepX = 5.7f;   // Distance between columns
        float dropY = 130f;   // Drop height above board
        for (int i = 0; i < 7; i++)
        {
            columnDropPositions[i] = new Vector3(startX + i * stepX, dropY, 100f);
        }

        // Hook up button events
        for (int col = 0; col < columnButtons.Length; col++)
        {
            int capturedCol = col; // Local copy for delegate
            columnButtons[col].onClick.AddListener(() => OnColumnButtonClicked(capturedCol));
        }

        resetButton.onClick.AddListener(() => ResetBoard());

        //changeDifficulty(dropdown.value + 1);

        ShowMessage(player1Name+"'s turn!",Color.yellow);
    }

    void changeDifficulty(int diff)
    {
        dificulty = diff;
        Debug.Log(diff);
    }

    void Update()
    {


        if (gameOver )
        {
            return;
        }

        if (currentPlayerId == 2)
        {
            stationaryTime += Time.deltaTime;
            if (stationaryTime >=2f)
            {
                int col = Player.MakeMove(ref board, dificulty);
                int row = board.Drop(currentPlayerId, col);
                // Instantiate the correct coin prefab and let physics handle the drop
                GameObject coinPrefab = (currentPlayerId == 1) ? yellowCoinPrefab : redCoinPrefab;
                Vector3 dropPosition = columnDropPositions[col];

                GameObject coinObject = Instantiate(coinPrefab, dropPosition, Quaternion.identity);
                coins[row, col] = coinObject;

                // Win/draw check after move
                if (board.IsWin(row, col))
                {
                    bool isYellow = currentPlayerId == 1;
                    ShowMessage((isYellow ? player1Name : player2Name) + " wins!", isYellow ? Color.yellow : Color.red);
                    DisableAllColumnButtons();
                    gameOver = true;
                    return;
                }
                else if (board.IsDraw())
                {
                    ShowMessage("Draw!");
                    DisableAllColumnButtons();
                    gameOver = true;
                    return;
                }

                // Switch player
                currentPlayerId = (currentPlayerId == 1) ? 2 : 1;
                ShowMessage(
                    currentPlayerId == 1 ? player1Name+"'s turn!" : player2Name+"'s turn!",
                    currentPlayerId == 1 ? Color.yellow : Color.red
                );
            }

        }
        else
        {
            stationaryTime = 0f; // Reset if moving
        }

    }

    public void OnColumnButtonClicked(int col)
    {
        int row = board.Drop(currentPlayerId, col);
        if (row == -1)
        {
            ShowMessage("Column full!");
            return;
        }

        // Instantiate the correct coin prefab and let physics handle the drop
        GameObject coinPrefab = (currentPlayerId == 1) ? yellowCoinPrefab : redCoinPrefab;
        Vector3 dropPosition = columnDropPositions[col];

        GameObject coinObject = Instantiate(coinPrefab, dropPosition, Quaternion.identity);
        coins[row, col] = coinObject;

        // Unity Physics handles coin falling and resting on floor/other coins.
        // Make sure your coin prefabs have Rigidbody2D and BoxCollider2D.
        // Floor prefab must have a static BoxCollider2D.

        // Win/draw check after move
        if (board.IsWin(row, col))
        {
            bool isYellow = currentPlayerId == 1;
            ShowMessage((isYellow ? player1Name : player2Name) + " wins!", isYellow ? Color.yellow : Color.red);
            DisableAllColumnButtons();
            return;
        }
        else if (board.IsDraw())
        {
            ShowMessage("Draw!");
            DisableAllColumnButtons();
            return;
        }

        // Switch player
        currentPlayerId = (currentPlayerId == 1) ? 2 : 1;
        ShowMessage(
            currentPlayerId == 1 ? player1Name+"'s turn!" : player2Name+"'s turn!",
            currentPlayerId == 1 ? Color.yellow : Color.red
        );
    }

    public void ResetBoard()
    {
        // Destroy all coin GameObjects
        for (int row = 0; row < 6; row++)
            for (int col = 0; col < 7; col++)
                if (coins[row, col] != null)
                {
                    Destroy(coins[row, col]);
                    coins[row, col] = null;
                }
        board.Reset();
        currentPlayerId = (currentPlayerId == 1) ? 2 : 1;
        ShowMessage(
            currentPlayerId == 1 ? player1Name + "'s turn!" : player2Name + "'s turn!",
            currentPlayerId == 1 ? Color.yellow : Color.red
        );
        EnableAllColumnButtons();
        gameOver = false;
    }

    private void ShowMessage(string msg)
    {
        if (messageText != null)
            messageText.text = msg;
        else
            Debug.Log(msg);
    }

    private void DisableAllColumnButtons()
    {
        foreach (var btn in columnButtons)
            btn.interactable = false;
    }

    private void EnableAllColumnButtons()
    {
        foreach (var btn in columnButtons)
            btn.interactable = true;
    }
    public void ShowMessage(string msg, Color color)
    {
        if (messageText != null)
        {
            messageText.text = msg;
            messageText.color = color;
        }
        else
        {
            Debug.Log(msg);
        }
    }
}