ISEbd-22_Nugaev_D.N._DoubleDeckerBus_Base/Bus/Bus/DrawingBus.cs

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

namespace Bus
{
    public class DrawingBus
    {
        public EntityBus Bus { get; protected set; }
        protected float _startPosX;
        protected float _startPosY;
        private int? _pictureWidth = null;
        private int? _pictureHeight = null;
        protected readonly int _busWidth = 157;
        protected readonly int _busHeight = 65;
        
        public DrawingBus(int speed, float weight, Color bodyColor)
        {
            Bus = new EntityBus(speed, weight, bodyColor);
        }


        protected DrawingBus(int speed, float weight, Color bodyColor, int busWidth, int busHeight) :
            this(speed, weight, bodyColor)
        {
            _busWidth = busWidth;
            _busHeight = busHeight;
        }

        public void SetPosition(int x, int y, int width, int height)
        {
            if (x < 0 || y < 0 || width < x+_busWidth || height < y + _busHeight)
            {
                _pictureHeight = null;
                _pictureWidth = null;
                return;
            }
            _startPosX = x;
            _startPosY = y;
            _pictureWidth = width;
            _pictureHeight = height;
        }

        public void MoveTransport(Direction direction)
        {
            if (!_pictureWidth.HasValue || !_pictureHeight.HasValue)
            {
                return;
            }
            switch (direction)
            {
                case Direction.Right:
                    if (_startPosX + _busWidth + Bus.Step < _pictureWidth)
                    {
                        _startPosX += Bus.Step;
                    }
                    break;
                case Direction.Left:
                    if (_startPosX - Bus.Step >= 0)
                    {
                        _startPosX -= Bus.Step;
                    }
                    break;
                case Direction.Up:
                    if (_startPosY - Bus.Step >= 0)
                    {
                        _startPosY -= Bus.Step;
                    }
                    break;
                case Direction.Down:
                    if (_startPosY + _busHeight + Bus.Step < _pictureHeight)
                    {
                        _startPosY += Bus.Step;
                    }
                    break;
            }

        }

        public virtual void DrawTransport(Graphics g)
        {
             if (_startPosX < 0 || _startPosY < 0 || !_pictureHeight.HasValue || !_pictureWidth.HasValue)
            {
                return;
            }
            //границы автобуса
            Pen pen = new(Color.Black);
            g.DrawRectangle(pen, _startPosX + 10, _startPosY + 10, 150, 50);

            //кузов
            Brush br = new SolidBrush(Bus?.BodyColor ?? Color.Black);
            g.FillRectangle(br, _startPosX+  11, _startPosY + 11, 149, 49);
            
            //колеса
            Brush brBlack = new SolidBrush(Color.Black);
            g.FillEllipse(brBlack, _startPosX + 20, _startPosY + 50, 20, 20);
            g.FillEllipse(brBlack, _startPosX + 130, _startPosY + 50, 20, 20);
            Brush brGray = new SolidBrush(Color.Gray);
            g.FillEllipse(brGray, _startPosX + 25, _startPosY + 55, 10, 10);
            g.FillEllipse(brGray, _startPosX + 135, _startPosY + 55, 10, 10);

            //стекла
            Brush brBlue = new SolidBrush(Color.LightBlue);
            g.FillRectangle(brBlue, _startPosX + 10, _startPosY + 20, 10, 20);
            g.DrawRectangle(pen, _startPosX + 10, _startPosY + 20, 10, 20);
            g.FillRectangle(brBlue, _startPosX + 30, _startPosY + 20, 30, 20);
            g.DrawRectangle(pen, _startPosX + 30, _startPosY + 20, 30, 20);
            g.FillRectangle(brBlue, _startPosX + 70, _startPosY + 20, 15, 40);
            g.DrawRectangle(pen, _startPosX + 70, _startPosY + 20, 15, 40);
            g.FillRectangle(brBlue, _startPosX + 85, _startPosY + 20, 15, 40);
            g.DrawRectangle(pen, _startPosX + 85, _startPosY + 20, 15, 40);
            g.FillRectangle(brBlue, _startPosX + 110, _startPosY + 20, 30, 20);
            g.DrawRectangle(pen, _startPosX + 110, _startPosY + 20, 30, 20);
            g.FillRectangle(brBlue, _startPosX + 150, _startPosY + 20, 10, 20);
            g.DrawRectangle(pen, _startPosX + 150, _startPosY + 20, 10, 20);
        }

        public void ChangeBorbers(int width, int height)
        {
            _pictureWidth = width;
            _pictureHeight = height;
            if (_pictureWidth <= _busWidth || _pictureHeight <= _busHeight)
            {
                _pictureWidth = null;
                _pictureHeight = null;
                return;
            }
            if (_startPosX + _busWidth > _pictureWidth)
            {
                _startPosX = _pictureWidth.Value - _busWidth;
            }
            if (_startPosY + _busHeight > _pictureHeight)
            {
                _startPosY = _pictureHeight.Value - _busHeight;
            }
        }
        public (float Left, float Right, float Top, float Bottom) GetCurrentPosition()
        {
            return (_startPosX, _startPosY, _startPosX + _busWidth, _startPosY + _busHeight);
        }

    }
}