Rules.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Chess;

public class Rules : MonoBehaviour
{
    DragAndDrop dad;
    Chess.Chess  chess; // Во имя отца и сына и святого духа, Аминь, живи!! <3 НЕ ТРОГАТЬ 
    // пиши пока работает Аминь

    public Rules()
    {
        dad = new DragAndDrop();
        chess = new Chess.Chess();
        ShowFigures();
    }
    void Start()
    {
      
    }


    void Update()
    {
        dad.Action();

    }

    void ShowFigures()
    {
        int nr = 0;
        for (int y = 0; y < 8; y++)
            for (int x = 0; x < 8; x++)
            {
                string figure = chess.GetFigureAt(x, y).ToString();
                if (figure == ".") continue;
                PlaceFigure("box" + nr, figure, x, y);
                nr++;
            }
        for (; nr < 32; nr++)
            PlaceFigure("box" + nr, "q", 9, 9);
    }

    void PlaceFigure (string box, string figure, int x, int y)
    {
        Debug.Log(box + " " + figure + " " + x + y);
        GameObject goBox = GameObject.Find(box);
        GameObject goFigure = GameObject.Find(figure); // K P R n b
        GameObject goSquare = GameObject.Find("" + x + y);

        var spriteFigure = goFigure.GetComponent<SpriteRenderer>();
        var spriteBox = goBox.GetComponent<SpriteRenderer>();
        spriteBox.sprite = spriteFigure.sprite;
    }
}

//class Jesus
//{
//    return Jesus;
//}

class DragAndDrop //пиздецовый класс умоляю не трогайте, устрою холокост
{
    enum State
    {
        none,
        drag,
    }

    State state;
    GameObject item;
    Vector2 offset;


    public DragAndDrop()
    {
        state = State.none;
        item = null;
    }

    public bool Action()
    {
        switch (state)
        {
            case State.none:
                if (IsMouseButtonPressed())
                    PickUp();
                break;
            case State.drag:
                if (IsMouseButtonPressed())
                    Drag();
                else
                {
                    Drop();
                    return true;
                }

                break;
        }
        return false;
    }

    bool IsMouseButtonPressed()
    {
        return Input.GetMouseButton(0);
    }

    void PickUp()
    {
        Vector2 clickPosition = GetClickPosition();
        Transform clickedItem = GetItemAt(clickPosition);
        if (clickedItem == null) return;
        item = clickedItem.gameObject;
        state = State.drag;
        offset = (Vector2)clickedItem.position - clickPosition;
        Debug.Log("Picked up" + item.name);
    }

    Vector2 GetClickPosition()
    {
        return Camera.main.ScreenToWorldPoint(Input.mousePosition);
    }

    Transform GetItemAt(Vector2 position)
    {
        RaycastHit2D[] figures = Physics2D.RaycastAll(position, position, 0.5f); //захват коллайдера
        if (figures.Length == 0)
            return null;
        return figures[0].transform;
    }

    void Drag()
    {
        item.transform.position = GetClickPosition() + offset;
    }

    void Drop()
    {
        state = State.none;
        item = null;
    }
}