www.pudn.com > IntroductionTo3DGameEngineDesign.rar > UserInterface.cs
using System;
using System.Drawing;
using System.Collections;
using Microsoft.DirectX;
using Microsoft.DirectX.Direct3D;
namespace GameEngine
{
///
/// Summary description for the Image class.
/// This class encapsulates a bitmap image as a Direct3D Surface.
///
public class Image : IDisposable
{
private Texture m_image = null;
private ImageInformation m_info = new ImageInformation();
private string m_sFilename;
public Image( string filename )
{
m_sFilename = filename;
Load();
}
public Size GetSize()
{
return new Size(m_info.Width, m_info.Height);
}
///
/// Dispose of the surface when we are done with it to free up video card memory
///
public void Dispose()
{
m_image.Dispose();
}
///
/// load the surface
///
public void Load()
{
try
{
m_info = new ImageInformation();
m_info = TextureLoader.ImageInformationFromFile(m_sFilename);
m_image = TextureLoader.FromFile(CGameEngine.Device3D ,m_sFilename);
}
catch (DirectXException d3de)
{
Console.AddLine("Unable to load image " + m_sFilename);
Console.AddLine( d3de.ErrorString );
}
catch ( Exception e )
{
Console.AddLine("Unable to load image " + m_sFilename);
Console.AddLine( e.Message );
}
}
///
/// Get the texture for rendering
///
///
/// Summary description for ImageButton.
///
public delegate void ButtonFunction( );
public class ImageButton : IDisposable
{
private int m_X = 0; // X position of buton on screen
private int m_Y = 0; // Y position of the button on the screen
private Image m_OffImage = null; // what the button looks like when off
private Image m_OnImage = null; // what the button looks like when on
private Image m_HoverImage = null; // what the button looks like when on
private bool m_bOn = false;
private bool m_bHoverOn = false;
private ButtonFunction m_Function = null;
private Rectangle m_Rect;
private VertexBuffer m_vb = null;
private CustomVertex.TransformedTextured[] data;
public Size GetSize() { return m_Rect.Size; }
public ImageButton(int nX, int nY, string sOffFilename, string sOnFilename ,
string sHoverFilename, ButtonFunction pFunc )
{
m_X = nX;
m_Y = nY;
m_OffImage = new Image( sOffFilename );
m_OnImage = new Image( sOnFilename );
m_HoverImage = new Image( sHoverFilename );
m_Rect = m_OffImage.GetRect();
m_Rect.X += m_X;
m_Rect.Y += m_Y;
m_Function = pFunc;
m_vb = new VertexBuffer( typeof(CustomVertex.TransformedTextured), 4,
CGameEngine.Device3D, Usage.WriteOnly, CustomVertex.TransformedTextured.Format,
Pool.Default );
}
public void Render()
{
try
{
data = new CustomVertex.TransformedTextured[4];
data[0].X = (float)m_Rect.X;
data[0].Y = (float)m_Rect.Y;
data[0].Z = 1.0f;
data[0].Tu = 0.0f;
data[0].Tv = 0.0f;
data[1].X = (float)(m_Rect.X+m_Rect.Width);
data[1].Y = (float)m_Rect.Y;
data[1].Z = 1.0f;
data[1].Tu = 1.0f;
data[1].Tv = 0.0f;
data[2].X = (float)m_Rect.X;
data[2].Y = (float)(m_Rect.Y+m_Rect.Height);
data[2].Z = 1.0f;
data[2].Tu = 0.0f;
data[2].Tv = 1.0f;
data[3].X = (float)(m_Rect.X+m_Rect.Width);
data[3].Y = (float)(m_Rect.Y+m_Rect.Height);
data[3].Z = 1.0f;
data[3].Tu = 1.0f;
data[3].Tv = 1.0f;
m_vb.SetData(data, 0, 0);
CGameEngine.Device3D.SetStreamSource( 0, m_vb, 0 );
CGameEngine.Device3D.VertexFormat = CustomVertex.TransformedTextured.Format;
// Set the texture
CGameEngine.Device3D.SetTexture(0, GetTexture() );
// Render the face
CGameEngine.Device3D.DrawPrimitives( PrimitiveType.TriangleStrip, 0, 2 );
}
catch (DirectXException d3de)
{
Console.AddLine( "Unable to display imagebutton " );
Console.AddLine( d3de.ErrorString );
}
catch ( Exception e )
{
Console.AddLine( "Unable to display imagebutton " );
Console.AddLine( e.Message );
}
}
///
/// dispose of the surfaces to free up video card memory
///
public void Dispose()
{
m_OffImage.Dispose();
m_OnImage.Dispose();
m_HoverImage.Dispose();
}
public void Restore()
{
m_OffImage.Load();
m_OnImage.Load();
m_HoverImage.Load();
}
///
/// Get the texture for rendering
///
///
/// Summary description for the SplashScreen class.
/// This class encapsulates a Splash Screen
///
public class SplashScreen : IDisposable
{
private Image image = null;
private float m_StartTime;
private float m_EndTime = 0.0f;
private VertexBuffer m_vb;
public bool m_bInitialized = false;
public float fTimeLeft;
public SplashScreen( string filename, int nDuration)
{
image = new Image( filename );
m_StartTime = DXUtil.Timer( TIMER.GETABSOLUTETIME );
m_EndTime = m_StartTime + nDuration;
m_vb = new VertexBuffer( typeof(CustomVertex.TransformedTextured), 4,
CGameEngine.Device3D, Usage.WriteOnly, CustomVertex.TransformedTextured.Format,
Pool.Default );
}
public void Restore()
{
if ( image != null )
{
image.Load();
}
}
public bool Render()
{
try
{
bool fog_state = CGameEngine.Device3D.RenderState.FogEnable;
CGameEngine.Device3D.RenderState.FogEnable = false;
CustomVertex.TransformedTextured[] data = new CustomVertex.TransformedTextured[4];
data[0].X = 0.0f;
data[0].Y = 0.0f;
data[0].Z = 0.0f;
data[0].Tu = 0.0f;
data[0].Tv = 0.0f;
data[1].X = CGameEngine.Device3D.Viewport.Width;
data[1].Y = 0.0f;
data[1].Z = 0.0f;
data[1].Tu = 1.0f;
data[1].Tv = 0.0f;
data[2].X = 0.0f;
data[2].Y = CGameEngine.Device3D.Viewport.Height;
data[2].Z = 0.0f;
data[2].Tu = 0.0f;
data[2].Tv = 1.0f;
data[3].X = CGameEngine.Device3D.Viewport.Width;
data[3].Y = CGameEngine.Device3D.Viewport.Height;
data[3].Z = 0.0f;
data[3].Tu = 1.0f;
data[3].Tv = 1.0f;
m_vb.SetData(data, 0, 0);
CGameEngine.Device3D.SetStreamSource( 0, m_vb, 0 );
CGameEngine.Device3D.VertexFormat = CustomVertex.TransformedTextured.Format;
// Set the texture
CGameEngine.Device3D.SetTexture(0, image.GetTexture() );
// Render the face
CGameEngine.Device3D.DrawPrimitives( PrimitiveType.TriangleStrip, 0, 2 );
CGameEngine.Device3D.RenderState.FogEnable = fog_state;
}
catch (DirectXException d3de)
{
Console.AddLine( "Unable to display SplashScreen " );
Console.AddLine( d3de.ErrorString );
}
catch ( Exception e )
{
Console.AddLine( "Unable to display SplashScreen " );
Console.AddLine( e.Message );
}
// check for timeout
float fCurrentTime = DXUtil.Timer( TIMER.GETABSOLUTETIME );
fTimeLeft = m_EndTime - fCurrentTime;
return ( fCurrentTime > m_EndTime );
}
///
/// dispose of the image
///
public void Dispose()
{
image.Dispose();
}
}
///
/// Summary description for the OptionScreen class.
/// This class encapsulates a Option Screen
///
public class OptionScreen : IDisposable
{
#region Attributes
private Image m_Background = null;
private Image m_Cursor = null;
public bool m_bInitialized = false;
private ArrayList m_buttons = new ArrayList();
private Point m_MousePoint = new Point(0,0);
private bool m_bMouseIsDown = false;
private bool m_bMouseWasDown = false;
private VertexBuffer m_vb;
#endregion
public OptionScreen( string filename)
{
try
{
m_Background = new Image( filename );
m_Cursor = new Image(@"..\..\Resources\Cursor.dds");
m_vb = new VertexBuffer( typeof(CustomVertex.TransformedTextured), 4,
CGameEngine.Device3D, Usage.WriteOnly, CustomVertex.TransformedTextured.Format,
Pool.Default );
}
catch (DirectXException d3de)
{
Console.AddLine( "Error creating Option Screen " + filename );
Console.AddLine( d3de.ErrorString );
}
catch ( Exception e )
{
Console.AddLine( "Error creating Option Screen " + filename );
Console.AddLine( e.Message );
}
}
public void Restore()
{
m_Background.Load();
foreach ( ImageButton button in m_buttons )
{
button.Restore();
}
}
public void AddButton(int nX, int nY, string sOffFilename, string sOnFilename , string sHoverFilename, ButtonFunction pFunc )
{
ImageButton button = new ImageButton( nX, nY, sOffFilename, sOnFilename, sHoverFilename, pFunc );
m_buttons.Add(button);
}
public void Render()
{
try
{
bool fog_state = CGameEngine.Device3D.RenderState.FogEnable;
CGameEngine.Device3D.RenderState.FogEnable = false;
CustomVertex.TransformedTextured[] data = new CustomVertex.TransformedTextured[4];
data[0].X = 0.0f;
data[0].Y = 0.0f;
data[0].Z = 1.0f;
data[0].Tu = 0.0f;
data[0].Tv = 0.0f;
data[1].X = CGameEngine.Device3D.Viewport.Width;
data[1].Y = 0.0f;
data[1].Z = 1.0f;
data[1].Tu = 1.0f;
data[1].Tv = 0.0f;
data[2].X = 0.0f;
data[2].Y = CGameEngine.Device3D.Viewport.Height;
data[2].Z = 1.0f;
data[2].Tu = 0.0f;
data[2].Tv = 1.0f;
data[3].X = CGameEngine.Device3D.Viewport.Width;
data[3].Y = CGameEngine.Device3D.Viewport.Height;
data[3].Z = 1.0f;
data[3].Tu = 1.0f;
data[3].Tv = 1.0f;
m_vb.SetData(data, 0, 0);
CGameEngine.Device3D.SetStreamSource( 0, m_vb, 0 );
CGameEngine.Device3D.VertexFormat = CustomVertex.TransformedTextured.Format;
// Set the texture
CGameEngine.Device3D.SetTexture(0, m_Background.GetTexture() );
// Render the screen background
CGameEngine.Device3D.DrawPrimitives( PrimitiveType.TriangleStrip, 0, 2 );
// Set diffuse blending for alpha set in vertices.
CGameEngine.Device3D.RenderState.AlphaBlendEnable = true;
CGameEngine.Device3D.RenderState.SourceBlend = Blend.SourceAlpha;
CGameEngine.Device3D.RenderState.DestinationBlend = Blend.InvSourceAlpha;
// Enable alpha testing (skips pixels with less than a certain alpha.)
if( CGameEngine.Device3D.DeviceCaps.AlphaCompareCaps.SupportsGreaterEqual )
{
CGameEngine.Device3D.RenderState.AlphaTestEnable = true;
CGameEngine.Device3D.RenderState.ReferenceAlpha = 0x08;
CGameEngine.Device3D.RenderState.AlphaFunction = Compare.GreaterEqual;
}
// copy on the buttons
foreach ( ImageButton button in m_buttons )
{
button.HoverTest( m_MousePoint );
if ( m_bMouseIsDown && !m_bMouseWasDown )
{
button.ClickTest( m_MousePoint );
}
button.Render();
}
m_bMouseWasDown = m_bMouseIsDown;
// draw cursor
Rectangle mouserect = new Rectangle(m_MousePoint,m_Cursor.GetSize());
try
{
data[0].X = (float)mouserect.X;
data[0].Y = (float)mouserect.Y;
data[0].Z = 0.0f;
data[0].Tu = 0.0f;
data[0].Tv = 0.0f;
data[1].X = (float)(mouserect.X+mouserect.Width);
data[1].Y = (float)mouserect.Y;
data[1].Z = 0.0f;
data[1].Tu = 1.0f;
data[1].Tv = 0.0f;
data[2].X = (float)mouserect.X;
data[2].Y = (float)(mouserect.Y+mouserect.Height);
data[2].Z = 0.0f;
data[2].Tu = 0.0f;
data[2].Tv = 1.0f;
data[3].X = (float)(mouserect.X+mouserect.Width);
data[3].Y = (float)(mouserect.Y+mouserect.Height);
data[3].Z = 0.0f;
data[3].Tu = 1.0f;
data[3].Tv = 1.0f;
m_vb.SetData(data, 0, 0);
CGameEngine.Device3D.SetStreamSource( 0, m_vb, 0 );
CGameEngine.Device3D.VertexFormat = CustomVertex.TransformedTextured.Format;
// Set the texture
CGameEngine.Device3D.SetTexture(0, m_Cursor.GetTexture() );
// Set diffuse blending for alpha set in vertices.
CGameEngine.Device3D.RenderState.AlphaBlendEnable = true;
CGameEngine.Device3D.RenderState.SourceBlend = Blend.SourceAlpha;
CGameEngine.Device3D.RenderState.DestinationBlend = Blend.InvSourceAlpha;
// Enable alpha testing (skips pixels with less than a certain alpha.)
if( CGameEngine.Device3D.DeviceCaps.AlphaCompareCaps.SupportsGreaterEqual )
{
CGameEngine.Device3D.RenderState.AlphaTestEnable = true;
CGameEngine.Device3D.RenderState.ReferenceAlpha = 0x08;
CGameEngine.Device3D.RenderState.AlphaFunction = Compare.GreaterEqual;
}
// Render the face
CGameEngine.Device3D.DrawPrimitives( PrimitiveType.TriangleStrip, 0, 2 );
}
catch (DirectXException d3de)
{
Console.AddLine( "Unable to display cursor " );
Console.AddLine( d3de.ErrorString );
}
catch ( Exception e )
{
Console.AddLine( "Unable to display cursor " );
Console.AddLine( e.Message );
}
CGameEngine.Device3D.RenderState.FogEnable = fog_state;
}
catch (DirectXException d3de)
{
Console.AddLine( "Error rendering Option Screen " );
Console.AddLine( d3de.ErrorString );
}
catch ( Exception e )
{
Console.AddLine( "Error rendering Option Screen " );
Console.AddLine( e.Message );
}
}
public void SetMousePosition( int x, int y, bool bDown )
{
m_MousePoint.X = x;
m_MousePoint.Y = y;
m_bMouseIsDown = bDown;
}
public void Dispose()
{
m_Background.Dispose();
m_Cursor.Dispose();
m_vb.Dispose();
}
}
}