FishToEat1.cs

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

namespace Fishy
{
    class FishToEat1
    {
        /// <summary>
        /// 一级小鱼类
        /// </summary>
        public Rectangle Rectangle { get; set; }
        //定义左右上下的移动速度
        private int SpeedX;
        private int SpeedY;
        //定义矩形
        public FishToEat1(Rectangle rectangle)
        {
            Rectangle = rectangle;
            SpeedX = +8;
            SpeedY = 0;
        }
        /// <summary>
        /// 画小鱼并定义转向
        /// </summary>
        /// <returns></returns>
         private Image OtherImage()
        {
            //向左
            if(SpeedX>0)
                return (Image)Properties.Resources.FishToEat1.Clone();
            Image img = (Image)Properties.Resources.FishToEat1.Clone();
            //向右
           img.RotateFlip(RotateFlipType.RotateNoneFlipX);
            return img;
        }
        //画小鱼
        public void Draw(Graphics g)
        {
            g.DrawImage(OtherImage(), Rectangle);
        }

        /// <summary>
        /// 时钟控制小鱼移动以及转向
        /// </summary>
        /// <param name="size"></param>
        public void Move(Size size)
        {
            //向左
            this.Rectangle = new Rectangle(this.Rectangle.X + SpeedX,
                                                             this.Rectangle.Y + SpeedY,
                                                             Rectangle.Width,
                                                             Rectangle.Height);
            //向右
            if (this.Rectangle.X - this.Rectangle.Width > size.Width)
            {
                Random random = new Random();