我正在尝试用C#(windows窗体)制作迷你游戏,就像太空入侵者一样。航天器飞得很好,但是我没有多次拍摄,我有一个方法timer_Tick
来制作动画,当我按空间拍摄时,第一次拍摄效果很好,但是第二次拍摄。这一半位置的第一杆消失了。镜头为pictureBox
,我尝试了pictureBox
列表,但没有成功。
我有这样的事情:
public void Form1_Load(object sender, EventArgs e)
{
shootP = new PictureBox();
shootP.Image = Properties.Resources.shoot_1;
shootP.SizeMode = PictureBoxSizeMode.Zoom;
shootP.Size = new Size(10, 72);
ListShoot = new List<PictureBox>();
int i = -1;
}
private void Form1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Space)
{
control = false;
i++;
ListShoot.Add(shootP);
timeShoot.Start();
}
private void timeShoot_Tick(object sender, EventArgs e)
{
if (control == false)
{
ListShoot[i].Location = new Point(spacecraft._imageBox.Location.X + 50, spacecraft._imageBox.Location.Y - 55); // align the shoot with spacecraft
control = true;
}
ListShoot[i].Top -= 40;
}
我做错了什么?
答案 0 :(得分:3)
每次都需要创建一个新图像,就像aliassce的回答一样。
private void Form1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Space)
{
control = false;
shootP = new PictureBox();
shootP.Image = Properties.Resources.shoot_1;
shootP.SizeMode = PictureBoxSizeMode.Zoom;
shootP.Size = new Size(10, 72);
ListShoot.Add(shootP);
timeShoot.Start();
}
}
然后,您需要更新列表中所有图像的位置。使用foreach循环并抛弃int迭代器。
private void timeShoot_Tick(object sender, EventArgs e)
{
if (control == false)
{
foreach PictureBox shot in ListShot
{
shot.Location = new Point(spacecraft._imageBox.Location.X + 50, spacecraft._imageBox.Location.Y - 55); // align the shoot with spacecraft
shot.Top -= 40;
}
control = true;
}
}
您可能必须更新绘制图像的代码以循环遍历List。有类似的东西:
foreach PictureBox shot in ListShoot
{
draw(shot);
}
最后,您可能希望不时清理列表,然后摆脱屏幕上不再显示的任何镜头,不再需要更新或绘制。
答案 1 :(得分:1)
您正在添加相同的PictureBox。您可以尝试创建一个新的。
将此圆锥体添加到Form1_KeyDown
。
shootP = new PictureBox();
shootP.Image = Properties.Resources.shoot_1;
shootP.SizeMode = PictureBoxSizeMode.Zoom;
shootP.Size = new Size(10, 72);
另一方面,你应该尽快使用OOP