描述

在這個(gè)項(xiàng)目中，您將使用 Netduino、不同顏色的 LED、按鈕和壓電揚(yáng)聲器構(gòu)建一個(gè)受流行邏輯游戲 Simon 啟發(fā)的游戲，您將使用Netduino.Foundation創(chuàng)建邏輯。

按鈕（或瞬時(shí)觸覺按鈕）是用于在按下時(shí)完成電路并在釋放時(shí)斷開電路的物理按鈕。按鈕的尺寸和配置范圍很廣，我們將使用帶有四 (4) 條引線的通用類型，這些引線旨在適合標(biāo)準(zhǔn)原型板。按下按鈕時(shí)，所有四根導(dǎo)線都已連接。您可以在此處閱讀有關(guān)按鈕的更多信息。

壓電揚(yáng)聲器（或壓電揚(yáng)聲器）是一種利用壓電效應(yīng)產(chǎn)生聲音的揚(yáng)聲器。最初的機(jī)械運(yùn)動(dòng)是通過向壓電材料施加電壓產(chǎn)生的，并且這種運(yùn)動(dòng)通常使用隔膜和諧振器轉(zhuǎn)換為可聽聲音。

Netduino.Foundation是一個(gè)使用 Netduino 上的 .NET MicroFramework 快速輕松地構(gòu)建連接事物的平臺(tái)。它由 Wilderness Labs 創(chuàng)建，完全開源并由 Netduino 社區(qū)維護(hù)。

如果您是 Netduino 開發(fā)新手，我建議您轉(zhuǎn)到 Netduino 入門項(xiàng)目以正確設(shè)置您的開發(fā)環(huán)境。

第 1 步 - 組裝電路

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西蒙游戲的電路組裝連接到 Netduino

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第 2 步 - 創(chuàng)建 Netduino 項(xiàng)目

在 Visual Studio 2015 for Windows 或最新的 Visual Studio for Mac 中創(chuàng)建 Netduino 項(xiàng)目；由于我們的游戲是游戲 Simon 的變體，所以我們稱它為Simone 。

第 3 步 - 添加 Netduino.Foundation NuGet 包

視窗

右鍵單擊您的Simone項(xiàng)目，然后單擊Manage NuGet Packages 。在瀏覽選項(xiàng)卡中，搜索Netduino.Foundation；它應(yīng)該是第一個(gè)搜索結(jié)果。單擊安裝按鈕。

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將 Netduino.Foundation NuGet 包添加到您的項(xiàng)目中

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蘋果系統(tǒng)

在解決方案資源管理器中按住 Alt 鍵單擊您的Simone項(xiàng)目，然后單擊添加 => 添加 NuGet 包以打開 NuGet 包窗口。搜索Netduino.Foundation包并單擊Add Package將其添加到您的項(xiàng)目中。

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將 Netduino.Foundation NuGet 包添加到您的項(xiàng)目中

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第 4 步 - 為 Simon 項(xiàng)目編寫代碼

添加 SimonGame類

我們要添加到項(xiàng)目中的第一個(gè)類包含西蒙游戲的主要邏輯。為您的項(xiàng)目添加一個(gè)名為SimonGame的新類并添加以下代碼：

using System;
using Microsoft.SPOT;
namespace Simone
{
   public enum GameState
   {
       Start,
       NextLevel,
       Win,
       GameOver,
   }
   public class SimonEventArgs : EventArgs
   {
       public GameState GameState { get; set; }
       public SimonEventArgs (GameState state)
       {
           GameState = state;
       }
   }
   public class SimonGame
   {
       public delegate void GameStateChangedDelegate(object sender, SimonEventArgs e);
       public event GameStateChangedDelegate OnGameStateChanged = delegate { };
       static int MAX_LEVELS = 25;
       static int NUM_BUTTONS = 4;
       int[] Steps = new int[MAX_LEVELS];
       public int Level { get; set; }
       int currentStep;
       Random rand = new Random((int)DateTime.Now.Ticks);
       public void Reset ()
       {
           OnGameStateChanged(this, new SimonEventArgs(GameState.Start));
           Level = 1;
           currentStep = 0;
           NextLevel();
       }
       public int[] GetStepsForLevel ()
       {
           var steps = new int[Level];
           for (int i = 0; i < Level; i++)
               steps[i] = Steps[i];
           return steps;
       }
       public void EnterStep(int step)
       {
           if (Steps[currentStep] == step)
           {
               Debug.Print("Correct step: " + step + " Current step: " + currentStep);
               currentStep++;
           }
           else
           {
               Debug.Print("wrong step: " + step + " should be: " + Steps[currentStep]);
               OnGameStateChanged(this, new SimonEventArgs(GameState.GameOver));
               Reset();
           }
           if(currentStep == Level)
           {
               NextLevel();
           }
       }
       void NextLevel ()
       {
           currentStep = 0;
           Level++;
           if(Level >= MAX_LEVELS)
           {
               OnGameStateChanged(this, new SimonEventArgs(GameState.Win));
               Reset();
               return;
           }
           var level = string.Empty;
           for (int i = 0; i < Level; i++)
           {
               Steps[i] = rand.Next(NUM_BUTTONS);
               level += Steps[i] + ", ";
           }
           Debug.Print(level);
           OnGameStateChanged(this, new SimonEventArgs(GameState.NextLevel));
       }
   }
}

請注意，SimonGame類實(shí)現(xiàn)了以下方法：

• 重置- 從第一關(guān)開始游戲

• int[] GetStepsForLevel - 返回某個(gè)級(jí)別的一系列步驟

• EnterStep - 驗(yàn)證用戶按下的按鈕是正確的選項(xiàng)

• NextLevel - 用于為新級(jí)別生成新的步驟序列

它還包含GameStates和SimonEventArgs ，用于在游戲更改為任何狀態(tài)時(shí)觸發(fā)事件。更多關(guān)于下一個(gè)。

添加應(yīng)用類

對于這個(gè)項(xiàng)目，我們實(shí)現(xiàn)了一個(gè)通用的App軟件模式來管理所有的外圍設(shè)備和主要邏輯。

將一個(gè)新的App類添加到您的項(xiàng)目中，然后粘貼以下代碼：

using System;
using System.Threading;
using Microsoft.SPOT;
using N = SecretLabs.NETMF.Hardware.Netduino;
using Netduino.Foundation.LEDs;
using Netduino.Foundation.Audio;
using Netduino.Foundation.Sensors.Buttons;
namespace Simone
{
   public class App
   {
       int ANIMATION_DELAY = 200;
       Led[] leds = new Led[4];
       float[] notes = new float[] { 261.63f, 329.63f, 392, 523.25f };
       PushButton[] buttons = new PushButton[4];
       PiezoSpeaker speaker;
       bool isAnimating = false;
       SimonGame game = new SimonGame();
       public void Run()
       {
           Debug.Print("Welcome to Simon");
           InitializePeripherals();
           SetAllLEDs(true);
           game.OnGameStateChanged += OnGameStateChanged;
           game.Reset();
       }
       private void InitializePeripherals()
       {
           leds[0] = new Led(N.Pins.GPIO_PIN_D0);
           leds[1] = new Led(N.Pins.GPIO_PIN_D1);
           leds[2] = new Led(N.Pins.GPIO_PIN_D2);
           leds[3] = new Led(N.Pins.GPIO_PIN_D3);
           buttons[0] = new PushButton(N.Pins.GPIO_PIN_D10, Netduino.Foundation.CircuitTerminationType.High);
           buttons[1] = new PushButton(N.Pins.GPIO_PIN_D11, Netduino.Foundation.CircuitTerminationType.High);
           buttons[2] = new PushButton(N.Pins.GPIO_PIN_D12, Netduino.Foundation.CircuitTerminationType.High);
           buttons[3] = new PushButton(N.Pins.GPIO_PIN_D13, Netduino.Foundation.CircuitTerminationType.High);
           buttons[0].PressStarted += OnButton0;
           buttons[1].PressStarted += OnButton1;
           buttons[2].PressStarted += OnButton2;
           buttons[3].PressStarted += OnButton3;
           speaker = new PiezoSpeaker(N.PWMChannels.PWM_PIN_D5);
           SetAllLEDs(false);
       }
       private void OnGameStateChanged(object sender, SimonEventArgs e)
       {
           var th = new Thread(() =>
           {
               switch (e.GameState)
               {
                   case GameState.Start:
                       break;
                   case GameState.NextLevel:
                       ShowStartAnimation();
                       ShowNextLevelAnimation(game.Level);
                       ShowSequenceAnimation(game.Level);
                       break;
                   case GameState.GameOver:
                       ShowGameOverAnimation();
                       game.Reset();
                       break;
                   case GameState.Win:
                       ShowGameWonAnimation();
                       break;
               }
           });
           th.Start();
       }
       private void SetAllLEDs(bool isOn)
       {
           leds[0].IsOn = isOn;
           leds[1].IsOn = isOn;
           leds[2].IsOn = isOn;
           leds[3].IsOn = isOn;
       }
       private void ShowStartAnimation()
       {
           if (isAnimating)
               return;
           isAnimating = true;
           SetAllLEDs(false);
           for (int i = 0; i < 4; i++)
           {
               leds[i].IsOn = true;
               Thread.Sleep(ANIMATION_DELAY);
           }
           for (int i = 0; i < 4; i++)
           {
               leds[3 - i].IsOn = false;
               Thread.Sleep(ANIMATION_DELAY);
           }
           isAnimating = false;
       }
       private void ShowNextLevelAnimation(int level)
       {
           if (isAnimating)
               return;
           isAnimating = true;
           SetAllLEDs(false);
           for (int i = 0; i < level; i++)
           {
               Thread.Sleep(ANIMATION_DELAY);
               SetAllLEDs(true);
               Thread.Sleep(ANIMATION_DELAY * 3);
               SetAllLEDs(false);
           }
           isAnimating = false;
       }
       private void ShowSequenceAnimation(int level)
       {
           if (isAnimating)
               return;
           isAnimating = true;
           var steps = game.GetStepsForLevel();
           SetAllLEDs(false);
           for (int i = 0; i < level; i++)
           {
               Thread.Sleep(200);
               TurnOnLED(steps[i], 400);
           }
           isAnimating = false;
       }
       private void ShowGameOverAnimation()
       {
           if (isAnimating)
               return;
           isAnimating = true;
           speaker.PlayTone(123.47f, 750);
           for (int i = 0; i < 20; i++)
           {
               SetAllLEDs(false);
               Thread.Sleep(50);
               SetAllLEDs(true);
               Thread.Sleep(50);
           }
           isAnimating = false;
       }
       private void ShowGameWonAnimation()
       {
           ShowStartAnimation();
           ShowStartAnimation();
           ShowStartAnimation();
           ShowStartAnimation();
       }
       private void TurnOnLED(int index, int durration = 400)
       {
           leds[index].IsOn = true;
           speaker.PlayTone(notes[index], durration);
           leds[index].IsOn = false;
       }
        DateTime lastPressed;
       private void OnButton(int buttonIndex)
       {
           if (DateTime.Now - lastPressed < TimeSpan.FromTicks(5000000)) //0.5s
               return;
           Debug.Print("Button tapped: " + buttonIndex);
           if (isAnimating == false)
           {
               lastPressed = DateTime.Now;
               TurnOnLED(buttonIndex);
               game.EnterStep(buttonIndex);
           }
       }
       private void OnButton0(object sender, EventArgs e)
       {
           OnButton(0);
       }
       private void OnButton1(object sender, EventArgs e)
       {
           OnButton(1);
       }
       private void OnButton2(object sender, EventArgs e)
       {
           OnButton(2);
       }
       private void OnButton3(object sender, EventArgs e)
       {
           OnButton(3);
       }
   }
}

這堂課發(fā)生了幾件事。這里最需要注意的是，Simone 是作為狀態(tài)機(jī)工作的，這意味著在開始游戲時(shí)，傳遞到下一個(gè)關(guān)卡，游戲的輸贏都是游戲狀態(tài)，當(dāng)改變狀態(tài)時(shí)，會(huì)觸發(fā)一個(gè)事件和OnGameStateChanged事件處理程序?qū)⒏鶕?jù)游戲狀態(tài)運(yùn)行適當(dāng)?shù)睦獭?/font>

using System.Threading;
namespace Simone
{
   public class Program
   {
       public static void Main ()
       {
           App app = new App();
           app.Run();
           Thread.Sleep(Timeout.Infinite);
       }
   }
}
namespace System.Diagnostics
{
   public enum DebuggerBrowsableState
   {
       Never = 0,
       Collapsed = 2,
       RootHidden = 3
   }
}