控制台特定按键输入，无阻塞

本文关键字：输入 控制台 | 更新日期: 2024-10-21 13:06:34

我需要在控制台应用程序中输入特定的键（arrows.left和arrows.right），而不阻塞循环。

这是代码：

while (fuel>0) {
    moveAndGenerate();
    for (int i=0;i<road.GetLength(0); i++)
    {
        for (int j = 0; j < road.GetLength(1); j++)
        {
            Console.Write(string.Format("{0} ", road[i, j]));
        }
        Console.Write(Environment.NewLine + Environment.NewLine);
    }
    Console.WriteLine("Paliwo: "+ (fuel=fuel-5) + "%");
    moveAndGenerate();
    replaceArrays();            
    Thread.Sleep(1000);
    Console.Clear();
}

它生成了一个简单的游戏：

| :x|
| : |
|x: |
| :↑|

只要有燃料就在回路内。我希望箭头在不等待Console.ReadKey()的情况下向右/向左移动。有可能吗？

控制台特定按键输入，无阻塞

正如RB所说，你可以为按键设置一个监听器，并检查是否为true，如果是这样，你可以将按键重置为null，并将汽车向该方向移动

在.NET控制台应用程序中收听按键

另一种可能的解决方法是使用BackgroundWorker来侦听输入。通过这种方式，您可以同时处理用户输入和主代码。它类似于一个单独的线程。

您需要将using System.ComponentModel;添加到您的程序中。

static BackgroundWorker backgroundWorker1 = new BackgroundWorker(); // Create the background worker
static string input = ""; // where the user command is stored
public static void Main()
{
    // All the code preceding the main while loop is here
    // Variable declarations etc.

    //Setup a background worker
    backgroundWorker1.DoWork += BackgroundWorker1_DoWork; // This tells the worker what to do once it starts working
    backgroundWorker1.RunWorkerCompleted += BackgroundWorker1_RunWorkerCompleted;  // This tells the worker what to do once its task is completed
    backgroundWorker1.RunWorkerAsync(); // This starts the background worker
    // Your main loop
    while (fuel>0) 
    {
        moveAndGenerate();
        for (int i=0;i<road.GetLength(0); i++)
        {
            for (int j = 0; j < road.GetLength(1); j++)
            {
                Console.Write(string.Format("{0} ", road[i, j]));
            }
            Console.Write(Environment.NewLine + Environment.NewLine);
        }
        Console.WriteLine("Paliwo: "+ (fuel=fuel-5) + "%");
        moveAndGenerate();
        replaceArrays();            
        Thread.Sleep(1000);
        Console.Clear();
    }
    // This is what the background worker will do in the background
    private static void BackgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
    {
        if (Console.KeyAvailable == false)
        {
            System.Threading.Thread.Sleep(100); // prevent the thread from eating too much CPU time
        }
        else
        {
            input = Console.In.ReadLine();
            // Do stuff with input here or, since you can make it a static
            // variable, do stuff with it in the while loop.
        }
    }
    // This is what will happen when the worker completes reading
    // a user input; since its task was completed, it will need to restart
    private static void BackgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs 
    {
        if(!backgroundWorker1.IsBusy)
        {
            backgroundWorker1.RunWorkerAsync(); // restart the worker
        }
    }
}
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