用方向鍵控制方向，空白鍵換場景
不過之後空白鍵想拿掉，要拿來當發射飛彈使用
看書學的，用方向鍵控制方向，空白鍵換場景
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namespace WindowsFormsApplication4
{
public partial class Form1 : Form
{
Image[]BG = new Image[3];
int dx = 0, dy = 0;
int k = 0;
int dir = 2;
public Form1()
{
InitializeComponent();
BG[0] = new Bitmap (Properties.Resources.A01);
BG[1] = new Bitmap (Properties.Resources.A02);
BG[2] = new Bitmap (Properties.Resources.A03);
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void Form1_Paint(object sender, PaintEventArgs e)
{
for (int i= -1; i <= this.ClientSize.Width / BG[k].Width +1; i++)
for (int j = -1; j <= this.ClientSize.Height/BG[k].Height +1; j++)
e.Graphics.DrawImage(BG[k], i * BG[k].Width + (dx % BG[k].Width), j * BG[k].Height + (dy % BG[k].Height));
}
private void Form1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyData == Keys.Down)
dir = 0;
else if (e.KeyData == Keys.Up)
dir = 1;
else if (e.KeyData == Keys.Right)
dir = 2;
else if (e.KeyData == Keys.Left)
dir = 3;
else if (e.KeyData == Keys.Space)
k = ++k % 3;
}
private void timer1_Tick(object sender, EventArgs e)
{
if (dir == 0) dy = dy - 5;
else if (dir == 1) dy = dy + 5;
else if (dir == 2) dx = dx - 5;
else if (dir == 3) dx = dx + 5;
this.Invalidate();
}
}
}
