private void Form1_KeyDown(object sender, KeyEventArgs e) //各按键对应的响应，每次按键后刷新界面、判断胜负
{
switch (e.KeyCode)
{
case Keys.W:
c.Up();
if (c.change) //成功移动便随机一个位置添加数字，下同
{
c.Add();
}
break;
case Keys.S:
c.Down();
if (c.change)
{
c.Add();
}
break;
case Keys.A:
c.Left();
if (c.change)
{
c.Add();
}
break;
case Keys.D:
c.Right();
if (c.change)
{
c.Add();
}
break;
case Keys.F1:
Screen();
message mes3 = new message();
mes3.a = "Saved successfully！";
mes3.b = "保存位置：" + Directory.GetCurrentDirectory() + "\\screenshot.png";
mes3.StartPosition = FormStartPosition.CenterParent;
mes3.ShowDialog();
break;
case Keys.Escape:
this.Close();
break;
}
draw();
pictureBox1.Refresh();
score.Text = c.score.ToString();
for (int x = 1; x <= 4; x++)
{
for (int y = 1; y <= 4; y++)
{
if (c.i[x, y] == 2048 && c.First2048 == true)
{
isWin();
c.First2048 = false;
}
}
}
if (c.die)
{
Gameover();
}
}