TicTacToeCell

using UnityEngine;

public class TicTacToeCell : MonoBehaviour {

    public SpriteRenderer sprite;
    public Color redPlayerColor = Color.red;
    public Color greenPlayerColor = Color.green;

    private int playerNumber;
    private TicTacToe game;
    private int x;
    private int y;

    public void Init(TicTacToe controller, int xCoord, int yCoord) {
        game = controller;
        x = xCoord;
        y = yCoord;
    }

    public int GetNumber() {
        return playerNumber;
    }

    public void Claim(bool isRedPlayer) {
        if (isRedPlayer) {
            playerNumber = 1;
            sprite.color = redPlayerColor;
        } else {
            playerNumber = -1;
            sprite.color = greenPlayerColor;
        }
    }

    public void Restart() {
        playerNumber = 0;
        sprite.color = Color.white;
    }

    private void OnMouseDown() {
        if (playerNumber == 0) {
            game.CellPressed(x, y);
        }
    }
}