如何在 C# 控制台应用程序中正确实现声音?

Question

我创建了一个控制台应用程序，该应用程序可以在控制台屏幕中的任何位置创建文本。我想创建一个类似打字机的效果，所以我从打字机导入了击键声音，并在我的项目中使用它。在屏幕中键入角色时，很难同步声音以准确播放，因此我创建了一个名为 Sound 的类，该类为我想在后台运行的每个声音创建一个背景线程。

现在我的字符已同步到打字机的声音，我添加了一个新的声音文件。只要有新行，就应该播放此文件。我现在面临的问题是，新的打字机回车声正在播放并突然停止。为了解决这个问题，我在 SoundPlayer 实例上添加了 PlaySync() 命令。这允许我在后台播放新文件，但是当执行下一条消息时，在控制台键入字符时，回车声音仍在播放。回车结束后，击键声音恢复正常。

我想出了为什么会发生这种情况：PlaySync() 将确保加载和播放声音，然后恢复正常操作。如果我使用PlaySync以外的任何东西，回车是快速甚至被听到。我试图添加延迟，但它仍然不完美。我希望能够在键入字符后立即听到正在播放的击键声音。当执行新行时，我希望能够听到回车声音。所有进程都必须等待此回车声音完成其循环。同步这些声音的正确方法是什么？我的逻辑有缺陷吗？

屏幕.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace CanizHospital
{
public class Screen
{
private Sounds sounds;
private const int delay = 300;
private static int _leftPos;
private static int _topPos;
public Screen(int leftPos, int topPos, int screenWidth, int screenHeight)
{
_leftPos = leftPos;
_topPos = topPos;
sounds = new Sounds();
SetUpScreen(screenWidth, screenHeight);
}
private static void SetUpScreen(int width, int height)
{
IntPtr ptr = GetConsoleWindow();
MoveWindow(ptr, 0, 0, 1000, 400, true);
Console.SetWindowSize(width, height);
}
public void WriteAt(string message, int x, int y, bool typeWritter)
{
try
{
Console.SetCursorPosition(_leftPos + x, _topPos + y);
if(typeWritter && message != null)
{
TypeWritter(message, delay);
}
}
catch(ArgumentOutOfRangeException e)
{
Console.Clear();
Console.Beep(37, 500);
Console.Write(e.Message);
}
}
public void TypeWritter(string message, int delay, bool newLine = true)
{
foreach (char c in message)
{
Console.Write(c);
sounds.LoadTypewriterSound();
Thread.Sleep(delay);
}

if(newLine)
{    
Console.Write(Environment.NewLine);
sounds.LoadCarriageReturn();
Thread.Sleep(delay);
}    
}
[DllImport("kernel32.dll", SetLastError = true)]
static extern IntPtr GetConsoleWindow();
[DllImport("user32.dll", SetLastError = true)]
internal static extern bool MoveWindow(IntPtr hWnd, int X, int Y, int nWidth, int nHeight, bool bRepaint);
}
}

声音.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Media;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace CanizHospital
{
class Sounds
{
public void LoadTypewriterSound()
{
Thread backgroundSound = new Thread(new ThreadStart(PlayKey));
backgroundSound.IsBackground = true;
backgroundSound.Start();
}
public void LoadCarriageReturn()
{
Thread backgroundSound = new Thread(new ThreadStart(PlayCarriageReturn));
backgroundSound.IsBackground = true;
backgroundSound.Start();
}
private static void PlayKey()
{
SoundPlayer player = new SoundPlayer();
player.SoundLocation = @"C:UsersErickDesktopC#CanizHospitalCanizHospitaltypewriter-key-1.wav";
player.Play();
}
private static void PlayCarriageReturn()
{
SoundPlayer player = new SoundPlayer();
player.SoundLocation = @"C:UsersErickDesktopC#CanizHospitalCanizHospitaltypewriter-return-1.wav";
player.PlaySync();
}
}
}

主要

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.Threading;
using Console = Colorful.Console;
using Colorful;
namespace CanizHospital
{
class Program
{
static void Main(string[] args)
{
Screen screen = new Screen(Console.CursorLeft, Console.CursorTop, 
Console.LargestWindowWidth, Console.LargestWindowHeight);

screen.WriteAt("Hi whats up", 0, 0, true);
//Thread.sleep(500);  //Delay here wont stop process
screen.WriteAt("Hi whats up", 1, 1, true);
}
}
}

Answer 1

首先，您不需要创建新线程来保存要调用Play()的SoundPlayer实例。您可以在Console.Write之前呼叫Play()，并在延迟一段时间后呼叫Stop()(或者由于停止太快而无法听到任何声音)。从 MSDN，Play()方法

使用新线程播放.wav文件，如果尚未加载.wav文件，则首先加载该文件。

其次，PlaySync()在执行完成之前阻止执行，这完全符合您的要求：

PlaySync 方法使用当前线程播放.wav文件，防止线程在加载完成之前处理其他消息。

以下是按照您需要的方式工作的代码片段：

public void TypeWritter(string message, int delay, bool newLine = true)
{
var player = new SoundPlayer
{
SoundLocation = @"C:UsersErickDesktopC#CanizHospitalCanizHospitaltypewriter-key-1.wav"
};
foreach (char c in message)
{
player.Play();
Console.Write(c);
Thread.Sleep(delay);
player.Stop();
}
if (newLine)
{
Console.Write(Environment.NewLine);
player.SoundLocation = @"C:UsersErickDesktopC#CanizHospitalCanizHospitaltypewriter-return-1.wav";
player.PlaySync();
//Thread.Sleep(delay); // Might not be necessary
}
}