PIbd-22_Tsukanova_I.V._AircraftCarrier_Base/AircraftCarrier/AircraftCarrier/AbstractMap.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AircraftCarrier
{
    internal abstract class AbstractMap
    {
        private IDrawingObject _drawingObject = null;
        protected int[,] _map = null;
        protected int _width;
        protected int _height;
        protected float _size_x;
        protected float _size_y;
        protected readonly Random _random = new();
        protected readonly int _freeRoad = 0;
        protected readonly int _barrier = 1;

        public Bitmap CreateMap(int width, int height, IDrawingObject drawningObject)
        {
            _width = width;
            _height = height;
            _drawingObject = drawningObject;
            GenerateMap();
            while (!SetObjectOnMap())
            {
                GenerateMap();
            }
            return DrawMapWithObject();
        }
        public Bitmap MoveObject(Direction direction)
        {
            if (_drawingObject != null)
            {
                if (true)
                {
                    _drawingObject.MoveObject(direction);
                }
                (float Left, float Right, float Top, float Bottom) = _drawingObject.GetCurrentPosition();

                if (Check(Left, Right, Top, Bottom) != 0)
                {
                    _drawingObject.MoveObject(GetOpositDirection(direction));
                }
                return DrawMapWithObject();
            }
            return null;
            
        }

        private Direction GetOpositDirection(Direction dir)
        {
            switch (dir)
            {
                case Direction.None:
                    return Direction.None;
                case Direction.Up:
                    return Direction.Down;
                case Direction.Down:
                    return Direction.Up;
                case Direction.Left:
                    return Direction.Right;
                case Direction.Right:
                    return Direction.Left;
            }
            return Direction.None;
        }

        private bool SetObjectOnMap()
        {
            if (_drawingObject == null || _map == null)
            {
                return false;
            }
            int x = _random.Next(0, 10);
            int y = _random.Next(0, 10);
            _drawingObject.SetObject(x, y, _width, _height);
            (float Left, float Right, float Top, float Bottom) = _drawingObject.GetCurrentPosition();
            float nowX = Left;
            float nowY = Right;
            float lenX = Top - Left;
            float lenY = Bottom - Right;
            while (Check(nowX, nowY, nowX + lenX, nowY + lenY) != 2)
            {
                int result;
                do
                {
                    result = Check(nowX, nowY, nowX + lenX, nowY + lenY);
                    if (result == 0)
                    {
                        _drawingObject.SetObject((int)nowX, (int)nowY, _width, _height);
                        return true;
                    }
                    else
                    {
                        nowX += _size_x;
                    }
                } while (result != 2);
                nowX = x;
                nowY += _size_y;
            }
            return false;
        }

        private int Check(float Left, float Right, float Top, float Bottom)
        {
            int startX = (int)(Left / _size_x);
            int startY = (int)(Right / _size_y);
            int endX = (int)(Top / _size_x);
            int endY = (int)(Bottom / _size_y);
            if (startX < 0 || startY < 0 || endX >= _map.GetLength(0) || endY >= _map.GetLength(0))
            {
                return 2;
            }
            for (int i = startX; i <= endX; i++)
            {
                for (int j = startY; j <= endY; j++)
                {
                    if (_map[i, j] == _barrier)
                    {
                        return 1;
                    }
                }
            }
            return 0;
        }

        private Bitmap DrawMapWithObject()
        {
            Bitmap bmp = new(_width, _height);
            if (_drawingObject == null || _map == null)
            {
                return bmp;
            }
            Graphics gr = Graphics.FromImage(bmp);
            for (int i = 0; i < _map.GetLength(0); ++i)
            {
                for (int j = 0; j < _map.GetLength(1); ++j)
                {
                    if (_map[i, j] == _freeRoad)
                    {
                        DrawRoadPart(gr, i, j);
                    }
                    else if (_map[i, j] == _barrier)
                    {
                        DrawBarrierPart(gr, i, j);
                    }
                }
            }
            _drawingObject.DrawningObject(gr);
            return bmp;
        }

        protected abstract void GenerateMap();
        protected abstract void DrawRoadPart(Graphics g, int i, int j);
        protected abstract void DrawBarrierPart(Graphics g, int i, int j);
    }
}