VB.NET实现DirectDraw9 (1) 托管的DDraw
關(guān)鍵字: VB.NET DirectX DirectDraw 9???????????????????????????? 作者:董含君
轉(zhuǎn)載請注明來自: http://blog.csdn.net/a11s
================以下為廢話(記日記是好習慣)===============
本來應該繼續(xù)DirectSound 混音的,但是今天由于時間關(guān)系,完不成任務了.
發(fā)現(xiàn)國外的一個站點,里面的人比較牛X 直接自己用binaryreader讀取wav
自愧不如啊~~~
================End 廢話===============================
很多人都認為DirectDraw在DirectX7時代就終結(jié)了,到了VB.NET以及托管的DirectX
微軟要繼承舊的DirectDraw,又要托管.所以DDraw畢竟是有變化的.
現(xiàn)在拾起來.有點不適應.但是基本概念還是不會變化的.
國內(nèi)高手對此不屑,而且還有人會了3D后敵視2D,我就不發(fā)表評論了,倒是讓我有了填補國內(nèi)空白的機會了
首先說大體過程.我的學習筆記比較基礎,不是為了體現(xiàn)DDraw的性能,而是理清步驟(微軟的例子就麻煩4了)
0 工程添加DirectDraw的引用,代碼里面imports Microsoft.DirectX.DirectDraw
1 創(chuàng)建Device 設置合作級別 (只要是DirectX 都要這樣)
2 創(chuàng)建描述 (為了創(chuàng)建Surface做準備,跟DirectSound創(chuàng)建Buffer的描述一個道理)
3 利用描述創(chuàng)建主緩沖以及二級緩沖(就是BackSurface)
4 為主緩沖指定一個Clipper
=============加載完成==================
繪制過程比較簡單,你可以使用Timer設置時間間隔.但是一般人不會這么作,雖然實現(xiàn)過程簡單.
為了體現(xiàn)平滑的動畫,往往CPU能用就用,FPS越高越好(其實太高了也沒用,但是當動畫復雜的時候就有用了)
以下是參考大風給我的計時器.
??????? Dim tfp As Integer = 0????????????????????????????????????? '''fps<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
??????? Dim mytime As Date = DateTime.Now?????????????????????????? '''臨時用一下
??????? While (run = True)????????????????????????????????????????? '''如果游戲沒有結(jié)束
??????????? blt()?????????????????????????????????????????????????? '''主要繪制過程
??????????? tfp += 1??????????????????????????????????????????????? '''fps++
??????????? If tfp = 200 Then?????????????????????????????????????? '''200次的時候計算時間
??????????????? tfp = 0
??????????????? Dim ts As New TimeSpan
??????????????? ts = (DateTime.Now.Subtract(mytime))
??????????????? mytime = DateTime.Now
??????????????? If ts.TotalSeconds <> 0 Then
??????????????????? Dim qiqi As Double = 200 / (ts.TotalSeconds)
????????? ??????????Me.Text = qiqi.ToString("##.##") + "F c"
??????????????? End If
?
??????????? End If
?
??????????? TT.Sleep(20)??????????????????????????????????????????? '''硬性規(guī)定休息一下,當然可以去掉發(fā)揮MAX速度
??????? End While
需要知道,里面的變量都是臨時定義的,如果你對速度很在意,這樣做是不可取的,但是為了理解方便,所以才這么作,進行優(yōu)化的時候就要拿出來了.
有了計數(shù)器,用它建立了游戲循環(huán).循環(huán)自己管理主要的blt()過程,blt也很簡單
??? Sub blt()
?
??????? If PS Is Nothing Then Exit Sub
??????? Dim r1 As Rectangle
??????? Dim r2 As Rectangle
??????? r2.Height = desc2.Height
??????? r2.Width = desc2.Width
??????? r1.Height = P.Size.Height
??????? r1.X = 0
??????? r1.Y = 0
??????? r1.Width = P.Size.Width
??????? PS.Draw(r1, BS, r2, DrawFlags.Wait)
?
??? End Sub
就是設置好矩形區(qū)域然后繪制,這里不再是DDraw7的RECT了,里面多少有些變化.
調(diào)用游戲循環(huán)很簡單,直接main2就可以,但是不可取,這樣做會讓你的程序”卡死”,導致程序沒有響應
需要新開一個線程處理這件事情
??? Private Sub Label2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label2.Click
??????? run = Not run
??????? If TT Is Nothing Then
??????????? TT = New Threading.Thread(AddressOf main2)
??????????? TT.Start()
?????? ?End If
??? End Sub
ok,具體需要注意的就這么多,以下為全部源代碼
======================================
Imports Microsoft.DirectX.DirectDraw
Imports Microsoft.DirectX
Imports System.Drawing
?
?
Public Class Form1
??? Inherits System.Windows.Forms.Form
??? Dim Dev As Device
??? Dim PS As Surface
??? Dim BS As Surface
??? Dim desc As SurfaceDescription
??? Dim desc2 As SurfaceDescription
??? Dim Clip As Clipper
??? Dim T As New Date
??? Dim run As Boolean
??? Dim TT As Threading.Thread
??? Const fn = "d:\nerv.bmp"
?
#Region " Windows 窗體設計器生成的代碼 "
?
??? Public Sub New()
??????? MyBase.New()
?
??????? '該調(diào)用是 Windows 窗體設計器所必需的。
??????? InitializeComponent()
?
??????? '在 InitializeComponent() 調(diào)用之后添加任何初始化
?
??? End Sub
?
??? '窗體重寫 dispose 以清理組件列表。
??? Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
??????? If disposing Then
??????????? If Not (components Is Nothing) Then
??????????????? components.Dispose()
??????????? End If
??????? End If
??????? MyBase.Dispose(disposing)
??? End Sub
?
??? 'Windows 窗體設計器所必需的
??? Private components As System.ComponentModel.IContainer
?
??? '注意: 以下過程是 Windows 窗體設計器所必需的
??? '可以使用 Windows 窗體設計器修改此過程。
??? '不要使用代碼編輯器修改它。
??? Friend WithEvents P As System.Windows.Forms.PictureBox
??? Friend WithEvents Label1 As System.Windows.Forms.Label
??? Friend WithEvents Label2 As System.Windows.Forms.Label
??? <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
??????? Me.P = New System.Windows.Forms.PictureBox
??????? Me.Label1 = New System.Windows.Forms.Label
??????? Me.Label2 = New System.Windows.Forms.Label
??????? Me.SuspendLayout()
??????? '
??????? 'P
??????? '
??????? Me.P.Location = New System.Drawing.Point(40, 48)
??????? Me.P.Name = "P"
??????? Me.P.Size = New System.Drawing.Size(640, 480)
??????? Me.P.TabIndex = 0
??????? Me.P.TabStop = False
??????? '
??????? 'Label1
??? ????'
??????? Me.Label1.Location = New System.Drawing.Point(16, 16)
??????? Me.Label1.Name = "Label1"
??????? Me.Label1.Size = New System.Drawing.Size(72, 24)
??????? Me.Label1.TabIndex = 1
??????? Me.Label1.Text = "init"
??????? '
??????? 'Label2
??????? '
??????? Me.Label2.Location = New System.Drawing.Point(112, 16)
??????? Me.Label2.Name = "Label2"
??????? Me.Label2.Size = New System.Drawing.Size(80, 16)
??????? Me.Label2.TabIndex = 2
??????? Me.Label2.Text = "draw"
??????? '
??????? 'Form1
??????? '
??????? Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
??????? Me.ClientSize = New System.Drawing.Size(728, 541)
??????? Me.Controls.Add(Me.Label2)
??????? Me.Controls.Add(Me.Label1)
??????? Me.Controls.Add(Me.P)
??????? Me.Name = "Form1"
??????? Me.Text = "Form1"
??????? Me.ResumeLayout(False)
?
??? End Sub
?
#End Region
?
??? Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label1.Click
??????? initDD()
??? End Sub
?
??? Sub initDD()
??????? Dev = New Device(CreateFlags.Default)
??????? Dev.SetCooperativeLevel(Me, CooperativeLevelFlags.Normal)
?
??????? Dim caps As New SurfaceCaps
??????? Dim caps2 As New SurfaceCaps
??????? caps.PrimarySurface = True
??????? caps.VideoMemory = True
??????? caps2.OffScreenPlain = True
?
??????? desc = New SurfaceDescription(caps)
??????? desc2 = New SurfaceDescription(caps2)
??????? desc2.EmptyFaceColor = RGB(0, 0, 255)
?
??????? Clip = New Clipper(Dev)
??????? Clip.Window = P
??????? BS = New Surface(fn, desc2, Dev)
??????? PS = New Surface(desc, Dev)
??????? PS.Clipper = Clip
??????? Me.Text = "loaded"
?
??? End Sub
?
??? Private Sub Label2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label2.Click
??????? run = Not run
????? ??If TT Is Nothing Then
??????????? TT = New Threading.Thread(AddressOf main2)
??????????? TT.Start()
??????? End If
??? End Sub
??? Sub blt()
?
??????? If PS Is Nothing Then Exit Sub
??????? Dim r1 As Rectangle
??????? Dim r2 As Rectangle
??????? r2.Height = desc2.Height
??????? r2.Width = desc2.Width
??????? r1.Height = P.Size.Height
??????? r1.X = 0
??????? r1.Y = 0
??????? r1.Width = P.Size.Width
??????? PS.Draw(r1, BS, r2, DrawFlags.Wait)
?
??? End Sub
?
??? Sub main2()
??????? Dim tfp As Integer = 0????????????????????????????????????? '''fps
??????? Dim mytime As Date = DateTime.Now?????????????????????????? '''臨時用一下
??????? While (run = True)????????????????????????????????????????? '''如果游戲沒有結(jié)束
??????????? blt()???????????????????????? ??????????????????????????'''主要繪制過程
??????????? tfp += 1??????????????????????????????????????????????? '''fps++
??????????? If tfp = 200 Then?????????????????????????????????????? '''200次的時候計算時間
??????????????? tfp = 0
??????????????? Dim ts As New TimeSpan
??????????????? ts = (DateTime.Now.Subtract(mytime))
??????????????? mytime = DateTime.Now
??????????????? If ts.TotalSeconds <> 0 Then
??????????????????? Dim qiqi As Double = 200 / (ts.TotalSeconds)
??????????????????? Me.Text = qiqi.ToString("##.##") + "F c"
??????????????? End If
?
??????????? End If
?
??????????? TT.Sleep(20)??????????????????????????????????????????? '''硬性規(guī)定休息一下,當然可以去掉發(fā)揮MAX速度
??????? End While
??? End Sub
?
??? Private Sub Form1_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
??????? End
??? End Sub
End Class
?
====================================================
需要注意的是,這里進行繪制的時候,圖片的位置是相對屏幕左上角的,只要你改變響應的rect就可
因為獲得坐標牽扯到其他地方,不宜于降低本文難度,所以沒加.
下一步的DirectDraw?? 全屏幕的動畫 以及出現(xiàn)角色繪制
DirectSound混音好像很麻煩.....
轉(zhuǎn)載于:https://www.cnblogs.com/a11s/archive/2005/12/31/309082.html
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