我正在尝试通过制作一个tetris控制台应用程序来学习c#。我有一个gameBoard类(代码中的“gb”)和一个块类(代码中的“bl”)。下面的代码是我到目前为止左右移动一个块的代码,但我不能包装我的在我接受用户输入的同时,如何让块下降。
while ((keyInfo = Console.ReadKey(true)).Key != ConsoleKey.Escape)
{
switch (keyInfo.Key)
{
case ConsoleKey.LeftArrow:
currCol = bl.getCol();
if (currCol - 1 >= 0)
{
gb.removeBlock(bl.getCol(), bl.getRow());
bl.setCol(currCol - 1);
gb.putBlock(bl.getCol(), bl.getRow());
Console.Clear();
Console.WriteLine(gb.makeGrid());
}
break;
case ConsoleKey.RightArrow:
currCol = bl.getCol();
if (currCol + 1 <= 9)
{
gb.removeBlock(bl.getCol(), bl.getRow());
bl.setCol(currCol + 1);
gb.putBlock(bl.getCol(), bl.getRow());
Console.Clear();
Console.WriteLine(gb.makeGrid());
}
break;
}
}
我假设Timer可能是这样做的,但我不知道如何将我的实例传递给ElapsedEventHandler的OnTimedEvent函数
public static void Main()
{
System.Timers.Timer aTimer = new System.Timers.Timer();
aTimer.Elapsed+=new ElapsedEventHandler(OnTimedEvent);
// Set the Interval to 5 seconds.
aTimer.Interval=5000;
aTimer.Enabled=true;
Console.WriteLine("Press \'q\' to quit the sample.");
while(Console.Read()!='q');
}
// Specify what you want to happen when the Elapsed event is raised.
private static void OnTimedEvent(object source, ElapsedEventArgs e)
{
Console.WriteLine("Hello World!");
}
计时器是可行的,还是我应该使用其他东西?如果定时器是我应该使用的,我应该从哪里开始学习如何使用它们?
谢谢!
答案 0 :(得分:0)
BackgroundWorker
或Task
或Thread
,根据您的需要,每个人都有不同的控制级别。
以下是一些参考文献BackgroundWorker,Thread,Task-Parallel-Library,以便您了解如何使用这三个提示。
好的,现在解释为什么你的代码没有按预期工作。现在你要求从控制台输入中读取一个键。这将阻止对控制台的所有执行,直到它读取密钥。看看这个,以解释为什么会发生这种情况,ReadKey()。
但是,有其他方法可以在不使用ReadKey()
的情况下执行此操作,请查看此网站以设置低级键盘挂钩Low-Level Key Hook。此方法允许您在不对控制台进行任何阻止的情况下读取密钥。但是,这并不意味着它会阻止密钥进入控制台。因此,在设计挂钩时请记住这一点。我希望这有助于了解正在发生的事情。
另外,只需了解更多信息,请查看此Console.ReadKey canceling,它将为您提供有关修改ReadKey()
行为的其他方法的更多信息。
所以,如果关于低级键盘钩子的网站被取消,这是显示在那里的代码:
using System;
using System.Diagnostics;
using System.Windows.Forms;
using System.Runtime.InteropServices;
class InterceptKeys
{
private const int WH_KEYBOARD_LL = 13;
private const int WM_KEYDOWN = 0x0100;
private static LowLevelKeyboardProc _proc = HookCallback;
private static IntPtr _hookID = IntPtr.Zero;
public static void Main()
{
_hookID = SetHook(_proc);
Application.Run();
UnhookWindowsHookEx(_hookID);
}
private static IntPtr SetHook(LowLevelKeyboardProc proc)
{
using (Process curProcess = Process.GetCurrentProcess())
using (ProcessModule curModule = curProcess.MainModule)
{
return SetWindowsHookEx(WH_KEYBOARD_LL, proc,
GetModuleHandle(curModule.ModuleName), 0);
}
}
private delegate IntPtr LowLevelKeyboardProc(
int nCode, IntPtr wParam, IntPtr lParam);
private static IntPtr HookCallback(
int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN)
{
int vkCode = Marshal.ReadInt32(lParam);
Console.WriteLine((Keys)vkCode);
}
return CallNextHookEx(_hookID, nCode, wParam, lParam);
}
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr SetWindowsHookEx(int idHook,
LowLevelKeyboardProc lpfn, IntPtr hMod, uint dwThreadId);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool UnhookWindowsHookEx(IntPtr hhk);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode,
IntPtr wParam, IntPtr lParam);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr GetModuleHandle(string lpModuleName);
}
答案 1 :(得分:0)
似乎最简单的方法是计时器(也可以在更复杂的情况下使用不同的线程) 要将参数传递给OnTimedEvent函数,您可以使用不同的解决方案。
1 - 您可以在班级中使用计时器,而OnTimedEvent是您班级的一项功能,因此您可以轻松使用班级字段。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Timers;
namespace ConsoleApplication1
{
class Program
{
public static void Main()
{
GameManager gameManager = new GameManager();
gameManager.StartGame();
}
public class GameManager
{
System.Timers.Timer aTimer;
int Parameter
{
get;
set;
}
public GameManager()
{
}
public void StartGame()
{
aTimer = new System.Timers.Timer();
aTimer.Elapsed += new ElapsedEventHandler(OnTimedEvent);
// Set the Interval to 5 seconds.
aTimer.Interval = 1000;
aTimer.Enabled = true;
Console.WriteLine("Press \'q\' to quit the sample.");
Parameter = 200;
while (Console.Read() != 'q')
{
Parameter =+ 10;
}
}
private void OnTimedEvent(object source, ElapsedEventArgs e)
{
Parameter++;
Console.WriteLine("Hello World!" + Parameter.ToString());
}
}
}
}
2-使用代表
public static void Main()
{
System.Timers.Timer aTimer = new System.Timers.Timer();
aTimer.Elapsed += delegate(object source, ElapsedEventArgs e) {
OnTimedEvent(source, e, "Say Hello");
};
// Set the Interval to 5 seconds.
aTimer.Interval = 1000;
aTimer.Enabled = true;
Console.WriteLine("Press \'q\' to quit the sample.");
while (Console.Read() != 'q') ;
}
// Specify what you want to happen when the Elapsed event is raised.
private static void OnTimedEvent(object source, ElapsedEventArgs e, string parameter)
{
Console.WriteLine("parameter");
}
3-您也可以使用静态全局变量
答案 2 :(得分:0)
尝试这个简单的例子,看看当你点击左右箭头时会发生什么,然后是escape:
class Program
{
static void Main(string[] args)
{
const int delay = 100;
DateTime nextMove = DateTime.Now.AddMilliseconds(delay);
bool quit = false;
bool gameOver = false;
while (!quit && !gameOver)
{
if (Console.KeyAvailable)
{
ConsoleKeyInfo key = Console.ReadKey(true); // read key without displaying it
switch (key.Key)
{
case ConsoleKey.LeftArrow:
Console.Write("L");
break;
case ConsoleKey.RightArrow:
Console.Write("R");
break;
case ConsoleKey.Escape:
quit = true;
break;
}
}
if (!quit && !gameOver && DateTime.Now > nextMove)
{
// ... move the pieces ...
Console.Write(".");
nextMove = DateTime.Now.AddMilliseconds(delay);
}
System.Threading.Thread.Sleep(50);
}
}
}