WPF + DxLib (C#) - その２

前回のコードをゲーム開発に使いやすいよう改造

1. FPS調整クラス作成

	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Text;
	using System.Threading.Tasks;
	using System.Diagnostics;
	namespace WpfApplication1
	{
	/// <summary>
	/// フレーム調整
	/// </summary>
	public class FpsTicker : Stopwatch
	{
	public double Fps { get; private set; }
	public int SkipTimes { get; private set; }
	public double ElpasedSec { get { return ElapsedTicks / (double)Stopwatch.Frequency; } }
	private double prevSec = 0.0;
	/// <summary>
	/// 開始
	/// </summary>
	public new void Start()
	{
	SkipTimes = 0;
	prevSec = ElpasedSec;
	base.Start();
	}
	/// <summary>
	/// フレーム待ち処理
	/// </summary>
	/// <param name="fps"></param>
	/// <returns>true:描画実行 false:描画スキップ</returns>
	public bool Wait(int fps = 60)
	{
	double waitSec = 1.0 / fps;
	double nowSec = ElpasedSec;
	double diffSec = nowSec - prevSec;
	if (diffSec > waitSec)
	{
	SkipTimes++;
	prevSec = nowSec;
	return false;
	}
	SkipTimes = 0;
	while (diffSec < waitSec)
	{
	nowSec = ElpasedSec;
	diffSec = nowSec - prevSec;
	}
	prevSec = nowSec - (diffSec - waitSec);
	Fps = 1.0 / diffSec;
	return true;
	}
	public override string ToString()
	{
	return string.Format("{0:#0.00} ({1})", Fps, SkipTimes);
	}
	}
	}

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2. DxLibImageクラスにゲームループ追加

	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Text;
	using System.Threading.Tasks;
	using System.Windows;
	using System.Windows.Controls;
	using System.Windows.Interop;
	using System.Windows.Media;
	using System.Windows.Threading;
	using System.Diagnostics;
	using DxLibDLL;
	namespace WpfApplication1
	{
	public class DxLibImage : D3DImage
	{
	private DX.SetRestoreGraphCallbackCallback RestoreGraphCallback;
	private FpsTicker fpsTicker = new FpsTicker();
	public event EventHandler Reset;
	public event EventHandler Update;
	public event EventHandler Render;
	public int BufferWidth { get; set; }
	public int BufferHeight { get; set; }
	public string Fps { get { return fpsTicker.ToString(); } }
	/// <summary>
	/// コンストラクタ
	/// </summary>
	public DxLibImage()
	{
	BufferWidth = 800;
	BufferHeight = 600;
	}
	/// <summary>
	/// DxLibの初期化
	/// </summary>
	public void Init_DxLib()
	{
	if (DX.DxLib_IsInit() == DX.TRUE)
	DX.DxLib_End();
	HwndSource hwnd = new HwndSource(0, 0, 0, 0, 0, "DxLib", IntPtr.Zero);
	DX.SetUserWindow(hwnd.Handle); // 描画ウィンドウの設定
	DX.SetGraphMode(BufferWidth, BufferHeight, 32); // グラフィックモードの設定
	DX.SetAlwaysRunFlag(DX.TRUE); // 非アクティブ時も処理続行
	DX.SetDrawScreen(DX.DX_SCREEN_BACK); // 描画先をバックバッファへ設定
	DX.SetUseFPUPreserveFlag(DX.TRUE); // FPUの精度を落とさない
	DX.SetWaitVSyncFlag(DX.FALSE); // VSync同期を無効
	DX.SetOutApplicationLogValidFlag(DX.FALSE); // ログ出力停止
	DX.SetDoubleStartValidFlag(DX.TRUE); // 多重起動を許可
	DX.SetUseIMEFlag(DX.TRUE); // IMEを有効
	DX.SetBackgroundColor(0, 0, 0);
	if (DX.DxLib_Init() == -1)
	{
	throw new Exception("Dxlib_Init");
	}
	// GC対策(不要?)
	DX.SetUseGraphBaseDataBackup(DX.FALSE); // 自分ででデバイスロスト時の処理を行う
	RestoreGraphCallback = RestoreGraph;
	DX.SetRestoreGraphCallback(RestoreGraphCallback); // デバイスリセット時のイベントを設定
	// メインループ
	ComponentDispatcher.ThreadIdle += ComponentDispatcher_ThreadIdle;
	// 描画ループ
	CompositionTarget.Rendering += CompositionTarget_Rendering;
	IsFrontBufferAvailableChanged += d3dImage_IsFrontBufferAvailableChanged;
	SetBackBuffer();
	fpsTicker.Start();
	}
	/// <summary>
	/// メインループ
	/// </summary>
	/// <param name="sender"></param>
	/// <param name="e"></param>
	void ComponentDispatcher_ThreadIdle(object sender, EventArgs e)
	{
	OnUpdate();
	if (fpsTicker.Wait())
	{
	DX.ClearDrawScreen();
	OnRender();
	DX.ScreenFlip();
	}
	}
	/// <summary>
	/// デバイスリセット発生
	/// </summary>
	void RestoreGraph()
	{
	OnReset();
	}
	/// <summary>
	/// バックバッファの設定
	/// </summary>
	void SetBackBuffer()
	{
	Lock();
	SetBackBuffer(D3DResourceType.IDirect3DSurface9, DX.GetUseDirect3D9BackBufferSurface());
	Unlock();
	}
	/// <summary>
	/// 表示の更新
	/// </summary>
	/// <param name="sender"></param>
	/// <param name="e"></param>
	void CompositionTarget_Rendering(object sender, EventArgs e)
	{
	try
	{
	if (IsFrontBufferAvailable)
	{
	Lock();
	SetBackBuffer(D3DResourceType.IDirect3DSurface9, DX.GetUseDirect3D9BackBufferSurface());
	AddDirtyRect(new Int32Rect(0, 0, PixelWidth, PixelHeight));
	Unlock();
	}
	}
	catch (Exception ex)
	{
	Trace.WriteLine(ex.ToString());
	}
	}
	/// <summary>
	/// フロントバッファの更新
	/// </summary>
	/// <param name="sender"></param>
	/// <param name="e"></param>
	void d3dImage_IsFrontBufferAvailableChanged(object sender, DependencyPropertyChangedEventArgs e)
	{
	fpsTicker.Stop();
	if (IsFrontBufferAvailable)
	{
	CompositionTarget.Rendering += CompositionTarget_Rendering;
	}
	else
	{
	CompositionTarget.Rendering -= CompositionTarget_Rendering;
	}
	fpsTicker.Start();
	}
	/// <summary>
	/// デバイスロスト発生
	/// </summary>
	public virtual void OnReset()
	{
	if (Reset != null)
	Reset(null, EventArgs.Empty);
	}
	/// <summary>
	/// プログラム更新処理
	/// </summary>
	public virtual void OnUpdate()
	{
	if (Update != null)
	Update(null, EventArgs.Empty);
	}
	/// <summary>
	/// 描画処理
	/// </summary>
	public virtual void OnRender()
	{
	if (Render != null)
	Render(null, EventArgs.Empty);
	}
	/// <summary>
	/// DxLibの開放
	/// </summary>
	public void End_DxLib()
	{
	if (DX.DxLib_IsInit() != DX.TRUE)
	return;
	DX.DxLib_End();
	}
	}
	}

view raw gistfile1.cs hosted with ❤ by GitHub

3. Windowのデザインをゲーム用に変更

	<Window x:Class="WpfApplication1.MainWindow"
	xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
	xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
	xmlns:me="clr-namespace:WpfApplication1"
	Title="MainWindow" Loaded="Window_Loaded" Closed="Window_Closed" SizeToContent="WidthAndHeight" ResizeMode="CanMinimize">
	<Canvas Width="800" Height="600">
	<Image>
	<Image.Source>
	<me:DxLibImage x:Name="dxImage" Render="dxImage_Render" Reset="dxImage_Reset" Update="dxImage_Update" />
	</Image.Source>
	</Image>
	<TextBlock x:Name="debugText" Height="600" Canvas.Left="600" TextWrapping="Wrap" Canvas.Top="0" Width="200" Foreground="Yellow" TextAlignment="Right"/>
	</Canvas>
	</Window>

view raw gistfile1.xml hosted with ❤ by GitHub

	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Text;
	using System.Threading.Tasks;
	using System.Windows;
	using System.Windows.Controls;
	using System.Windows.Data;
	using System.Windows.Documents;
	using System.Windows.Input;
	using System.Windows.Media;
	using System.Windows.Media.Imaging;
	using System.Windows.Navigation;
	using System.Windows.Shapes;
	using System.Windows.Interop;
	using System.Diagnostics;
	using DxLibDLL;
	namespace WpfApplication1
	{
	public partial class MainWindow : Window
	{
	public MainWindow()
	{
	InitializeComponent();
	}
	private void Window_Loaded(object sender, RoutedEventArgs e)
	{
	// DxLibの初期化
	dxImage.Init_DxLib();
	}
	private void Window_Closed(object sender, EventArgs e)
	{
	// DxLibの終了
	dxImage.End_DxLib();
	}
	private void dxImage_Reset(object sender, EventArgs e)
	{
	// グラフィックのリセット
	}
	private void dxImage_Update(object sender, EventArgs e)
	{
	// プログラムの更新処理
	debugText.Text = dxImage.Fps;
	}
	private void dxImage_Render(object sender, EventArgs e)
	{
	// 描画処理
	if (this.WindowState == WindowState.Minimized)
	return;
	DX.DrawBox(0, 0, 200, 200, DX.GetColor(255, 0, 0), DX.TRUE);
	}
	}
	}

view raw gistfile1.cs hosted with ❤ by GitHub