C# 别踩白块小游戏(有点瑕疵)

 Random r = new Random();
        Timer luo = new Timer();
        Timer hk = new Timer(); 
        Label ks = new Label();
        Label jf = new Label();
        int n = 0;
        private void Form2_Load(object sender, EventArgs e)
        {
            //布置背景
            this.BackgroundImage = Image.FromFile(@"../../img/01.jpg");
            this.BackgroundImageLayout = ImageLayout.Stretch;
            //让界面居中
            this.Left = Screen.PrimaryScreen.WorkingArea.Width / 2 - this.Width / 2;
            this.Top = Screen.PrimaryScreen.WorkingArea.Height / 2 - this.Height / 2;
            //开始按钮
            //Label ks = new Label();
            ks.Text = "开始游戏";
            ks.Size = new Size(125, 35);
            ks.Font = new Font("", 20);
            ks.Location = new Point(panel1.Width + 30, 500);
            ks.Click += Ks_Click;
            this.Controls.Add(ks);
            //计分板
            jf.Size = new Size(125, 125);
            jf.Font = new Font("", 15);
            jf.BackColor = Color.White;
            jf.Text = "点击的黑块" + n+"个";
            jf.Location = new Point(panel1.Width + 30, 100);
            this.Controls.Add(jf);
            //黑块的生成
            //Timer hk = new Timer();
            hk.Interval = 930;
            hk.Tick += Hk_Tick;
            //黑块下落
            //Timer luo = new Timer();
            luo.Interval = 30;
            luo.Tick += Luo_Tick;
        }

        private void Ks_Click(object sender, EventArgs e)
        {
            if (ks.Text=="开始游戏")
            {
                luo.Start();
                hk.Start();
                ks.Text = "结束游戏";
            }
            else if (ks.Text=="结束游戏")
            {
                luo.Stop();
                hk.Stop();
                ks.Text = "开始游戏";
            }
            
        }
        //下落事件
        private void Luo_Tick(object sender, EventArgs e)
        {
            foreach (Control item in panel1.Controls)
            {
                item.Top += 5;
                if (item.Top >= panel1.Height)
                {
                    
                    if (item.BackColor == Color.Black)
                    {
                        luo.Stop();
                        hk.Stop();
                        MessageBox.Show("GG");
                    }
                     else 
                     {
                         item.Dispose();
                     }
                }
            }
        }
        //生成黑块
        private void Hk_Tick(object sender, EventArgs e)
        {
            Label blackKuai = new Label();
            int p = r.Next(0,4) * 100;
            blackKuai.Location = new Point(p, -150);
            blackKuai.BorderStyle = BorderStyle.FixedSingle;
            blackKuai.Size = new Size(100,150);
            blackKuai.BackColor = Color.Black;
            panel1.Controls.Add(blackKuai);
            blackKuai.MouseClick += BlackKuai_MouseClick;
            Label whitekuia1 = kuai();
            Label whitekuia2 = kuai();
            Label whitekuia3 = kuai();
            switch (p)
            {
                case 0:
                    whitekuia1.Location = new Point(1 * 100, -150);
                    whitekuia2.Location = new Point(2 * 100, -150);
                    whitekuia3.Location = new Point(3 * 100, -150);
                    break;
                case 100:
                   whitekuia1.Location = new Point(0, -150);
                   whitekuia2.Location = new Point(2 * 100, -150);
                   whitekuia3.Location = new Point(3 * 100, -150);
                    break;
                case 200:
                    whitekuia1.Location = new Point(0, -150);
                    whitekuia2.Location = new Point(1 * 100, -150);
                    whitekuia3.Location = new Point(3 * 100, -150);
                    break;
                case 300:
                    whitekuia1.Location = new Point(0, -150);
                    whitekuia2.Location = new Point(1 * 100, -150);
                    whitekuia3.Location = new Point(2 * 100, -150);
                    break;
                default:
                    break;
            }
        }
        //点击事件
        private void BlackKuai_MouseClick(object sender, MouseEventArgs e)
        {
            n++;
            jf.Text = "点击的黑块" + n + "个";

            Label label = sender as Label;
            label.BackColor = Color.White;
        }
        //白块事件
        private Label kuai()
        {
            Label lab = new Label();
            lab.Size = new Size(100, 150);
            lab.BorderStyle = BorderStyle.FixedSingle;
            lab.BackColor = Color.White;
            panel1.Controls.Add(lab);
            lab.MouseClick += Lab_MouseClick;
            return lab;
        }
        //点击白块事件
        private void Lab_MouseClick(object sender, MouseEventArgs e)
        {
            luo.Stop();
            hk.Stop();
            MessageBox.Show("GG");
        }
    }
}