Question

我很抱歉有关这个游戏的常见问题，但我不知道在我的游戏中何处以及如何实现游戏循环。我希望游戏循环能够像这样工作：

Settings();
if (startClicked == true)
{
    Spawn();
}
while (enemyKilled == true)
{
    Spawn();
}

这是我的代码：

public partial class Form1 : Form
{
    public int score1 = 0;
    public PictureBox enemy = new PictureBox();
    public PictureBox missile = new PictureBox();
    public int enemyX;
    public int enemyY;
    public int missileX;
    public int missileY;
    public bool enemyKilled;
    public bool startClicked;
    public Form1()
    {
        InitializeComponent();
        logo.Visible = false;
        startbutton.Visible = false;
        spaceship.Visible = false;
        score.Visible = false;
        labelEnemyX.Visible = false;
        labelEnemyY.Visible = false;
        labelMissileX.Visible = false;
        labelMissileY.Visible = false;

    }

    private void Settings()
    {
        logo.Visible = true;
        startbutton.Visible = true;
        score.Text = Convert.ToString(score1);
    }

    private void Spawn()
    {
        enemy.Visible = true;
        missile.Visible = true;
        System.Timers.Timer enemyMove = new System.Timers.Timer();
        enemyMove.Interval = 100;
        Random enemyPosition = new Random();
        int enemyX = enemyPosition.Next(30, 400);
        int enemyY = enemy.Location.Y;
        enemy.Location = new Point(enemyX, 0);
        enemy.Image = WindowsFormsApplication16.Properties.Resources.Enemy2;
        enemy.Width = 36;
        enemy.Height = 29;
        this.Controls.Add(enemy);
        enemyMove.Elapsed += (sender, args) =>
            {
                enemy.Location = new Point(enemyX, enemy.Location.Y + 2);
                enemyX = enemy.Location.X;
                enemyY = enemy.Location.Y;
                labelEnemyX.Text = Convert.ToString(enemyX);
                labelEnemyY.Text = Convert.ToString(enemyY);
                if (enemyY <= -10)
                {
                    enemyKilled = false;
                }
            }; enemyMove.Start();
    }

    private void AddScore()
    {
        if (enemyKilled == true)
        {
            score1++;
            score.Text = Convert.ToString(score1);
        }
    }

    private void MissileMove()
    {
        System.Timers.Timer missileMove = new System.Timers.Timer();
        missileMove.Interval = 30;
        missileMove.Elapsed += (sender, args) =>
            {
                if (missile.Location.Y >= -30)
                {
                    missile.Location = new Point(missile.Location.X, missile.Location.Y - 15);
                    missileX = missile.Location.X;
                    missileY = missile.Location.Y;
                    labelMissileX.Text = Convert.ToString(missileX);
                    labelMissileY.Text = Convert.ToString(missileY);
                    int enemyToMissileLocationX = Convert.ToInt32(labelEnemyX.Text);
                    int enemyToMissileLocationY = Convert.ToInt32(labelEnemyY.Text);
                    if ((missileX - enemyToMissileLocationX <= 20 && missileY - enemyToMissileLocationY <= 20 && missileX - enemyToMissileLocationX >= 0 && missileY - enemyToMissileLocationY >= 0) || (enemyToMissileLocationX - missileX <= 20 && enemyToMissileLocationY - missileY <= 20 && enemyToMissileLocationX - missileX >= 0 && enemyToMissileLocationY - missileY >= 0))
                    {
                        missile.Visible = false;
                        enemy.Visible = false;
                        enemyKilled = true;
                    }
                }
            }; missileMove.Start();

    }

    void Form1_Load(object sender, EventArgs e)
    {
        Settings();
        if (startClicked == true)
        {
            Spawn();
        }
        while (enemyKilled == true)
        {
            Spawn();
        }
    }

    private void startbutton_Click(object sender, EventArgs e)
    {
        this.startClicked = true;
        logo.Visible = false;
        startbutton.Visible = false;
        spaceship.Visible = true;
        score.Visible = true;
        startbutton.Enabled = false;

    }

    private void Form1_KeyDown(object sender, KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Right)
        {
            if (spaceship.Location.X <= 370)
            {
                spaceship.Location = new Point(spaceship.Location.X + 10, spaceship.Location.Y);
            }
        }
        if (e.KeyCode == Keys.Left)
        {
            if (spaceship.Location.X >= 0)
            {
                spaceship.Location = new Point(spaceship.Location.X - 10, spaceship.Location.Y);
            }
        }
        if (e.KeyCode == Keys.Space)
        {
            missile.Image = WindowsFormsApplication16.Properties.Resources.Missile;
            missile.Height = 42;
            missile.Width = 12;
            missile.Location = new Point(spaceship.Location.X + 28, spaceship.Location.Y + 15);
            this.Controls.Add(missile);
            MissileMove();

        }
    }
}

更新

    private void MissileMove()
    {
        System.Timers.Timer missileMove = new System.Timers.Timer();
        missileMove.Interval = 30;
        missileMove.Elapsed += (sender, args) =>
            {
                if (missile.Location.Y >= -30)
                {
                    missile.Location = new Point(missile.Location.X, missile.Location.Y - 15);
                    missileX = missile.Location.X;
                    missileY = missile.Location.Y;
                    labelMissileX.Text = Convert.ToString(missileX);
                    labelMissileY.Text = Convert.ToString(missileY);
                    int enemyToMissileLocationX = Convert.ToInt32(labelEnemyX.Text);
                    int enemyToMissileLocationY = Convert.ToInt32(labelEnemyY.Text);
                    if ((missileX - enemyToMissileLocationX <= 20 && missileY - enemyToMissileLocationY <= 20 && missileX - enemyToMissileLocationX >= 0 && missileY - enemyToMissileLocationY >= 0) || (enemyToMissileLocationX - missileX <= 20 && enemyToMissileLocationY - missileY <= 20 && enemyToMissileLocationX - missileX >= 0 && enemyToMissileLocationY - missileY >= 0))
                    {
                        missile.Visible = false;
                        enemy.Visible = false;
                        enemyKilled = true;
                        System.Threading.Thread.Sleep(100);
                        Application.DoEvents();
                        Spawn();
                    }
                }
            }; missileMove.Start();

尝试用这个类来做这个，是的，它再一次产生了敌人，但动画被窃听，我可以看到敌人从一个位置跳到另一个位置。谢谢你的帮助。

Answer 1

我的建议是在Form_Load（或main函数中使用函数实现游戏循环，如果您熟悉将其集成到Windows窗体应用程序中），但添加调用在循环内部Application.DoEvents以确保窗口仍然响应移动和大小调整以及按钮单击等事件。除此之外，您可能需要澄清当前解决方案遇到的问题，以便获得更完整和详细的答案。

Answer 2

这看起来像Windows窗体。因此，我建议您有一个后台线程，该线程在while循环中运行并处理游戏的所有移动/更新逻辑。复杂的部分将管理Windows表单线程和游戏线程之间的状态。您将需要确保您是按钮点击等的事件处理程序，更新游戏状态是以线程安全的方式执行，因为它们将在GUI线程上。游戏循环线程需要在GUI上更新状态，这将需要所谓的marshelling，因为只允许GUI线程访问窗体上存在的控件，如按钮等。

线程管理，线程安全和marshelling的主题我将留给你研究。

这假设它是某种实时游戏，而不是基于回合。如果它是基于回合的，那么你真的不需要游戏循环。您可以通过使用状态图和纯粹的事件驱动设计来实现相同的目标。

在Windows窗体中实现游戏循环

2 个答案: