C# 超级玛丽（WinForm）跳过就得分

声明变量与初始化：

private const int MarioSize = 50;
        private const int ObjectSize = 50;
        private const int ObjectSpeed = 10;

        private int marioY;
        private int objectX;
        private int objectY;
        private bool isJumping;
        private int jumpSpeed;
        private bool gameOver;

        private int score;
        public Form1()
        {
            InitializeComponent();
            DoubleBuffered = true;
            marioY = ClientSize.Height - MarioSize;
            objectX = ClientSize.Width;
            objectY = ClientSize.Height - ObjectSize;
            isJumping = false;
            jumpSpeed = 10;
            gameOver = false;
            score = 0;

            timer1.Interval = 1000 / 60; // 每秒60帧
            timer1.Enabled = true;
        }           

按下空格键起跳：

private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Space && !isJumping && !gameOver)
            {
                
                jumpSpeed = -10;
            }

        }
        private void Form1_Paint(object sender, PaintEventArgs e)
        {
            e.Graphics.FillRectangle(Brushes.SkyBlue, 0, 0, ClientSize.Width, ClientSize.Height);
            e.Graphics.DrawImage(Properties.Resources._1, 50, marioY, MarioSize, MarioSize);//图片
            e.Graphics.FillRectangle(Brushes.Red, objectX, objectY, ObjectSize, ObjectSize);
            e.Graphics.DrawString(#34;得分：{score}", Font, Brushes.Black, 10, 10);
        }           

时间控件：

private void timer1_Tick(object sender, EventArgs e)
        {
            if (!gameOver)
            {
                objectX -= ObjectSpeed;

                if (objectX < -ObjectSize)
                {
                    objectX = ClientSize.Width + ObjectSize;
                    objectY = ClientSize.Height - ObjectSize - new Random().Next(50, 150);
                    score++;
                }

                if (isJumping)
                {
                    marioY -= jumpSpeed;
                    jumpSpeed--;

                    if (marioY >= ClientSize.Height - MarioSize)
                    {
                        isJumping = false;
                        marioY = ClientSize.Height - MarioSize;
                        jumpSpeed = 10;
                    }
                }
                else
                {
                    marioY += jumpSpeed;
                    jumpSpeed = Math.Min(jumpSpeed + 1, 20);
                    if (marioY + MarioSize > ClientSize.Height)//停在底部
                    {
                        marioY = ClientSize.Height - MarioSize;
                    }
                }

                if (objectX < 100 && objectX > 0 && marioY + MarioSize > objectY)
                {
                    gameOver = true;
                    timer1.Enabled = false;
                    MessageBox.Show(#34;游戏结束！得分：{score}");
                }
                

                Invalidate();
            }           

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