Prt5 - "Hello World"

//Main header file for the XDK

#include <xtl.h>

 

//NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW

#include <xfont.h> //used for directX textout

#include <stdio.h> //used for swprintf

//NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW

 

LPDIRECT3D8 g_pD3D = NULL;                      // DirectX Object

LPDIRECT3DDEVICE8 g_pD3DDevice = NULL;          // Screen Object

 

void InitialiseD3D()

{

    //First of all, create the main D3D object. If it is created successfully we

    //should get a pointer to an IDirect3D8 interface.

    g_pD3D = Direct3DCreate8(D3D_SDK_VERSION);

 

    //Create a structure to hold the settings for our device

    D3DPRESENT_PARAMETERS d3dpp;

    ZeroMemory(&d3dpp, sizeof(d3dpp));

 

    //Fill the structure.

    // Set fullscreen 640x480x32 mode

 

      d3dpp.BackBufferWidth = 640;

      d3dpp.BackBufferHeight = 480;

      d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8;

 

 

      // Create one backbuffer and a zbuffer

      d3dpp.BackBufferCount = 1;

 

      // Set up how the backbuffer is "presented" to the frontbuffer each time

      d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;

 

    //Create a Direct3D device.

    g_pD3D->CreateDevice(0, D3DDEVTYPE_HAL, NULL,

                                   D3DCREATE_HARDWARE_VERTEXPROCESSING,

                                                   &d3dpp, &g_pD3DDevice);

 

    g_pD3DDevice->SetRenderState(D3DRS_LIGHTING, FALSE);

}

 

 

 

void CleanUp()

{

    g_pD3DDevice->Release();

    g_pD3D->Release();

}

//Application entry point

void __cdecl main()

{

      InitialiseD3D();

      while(true)

      {

            //Clear the backbuffer to black

            g_pD3DDevice->Clear(0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER, D3DCOLOR_XRGB(0, 0, 255), 1.0f, 0);

            //Begin the scene

            g_pD3DDevice->BeginScene();

 

 

                  //NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW NEW

                  DisplayText();

 

            //End the scene

            g_pD3DDevice->EndScene();

 

            //Filp the back and front buffers so that whatever has been rendered on the back buffer

            //will now be visible on screen (front buffer).

 

            g_pD3DDevice->Present(NULL, NULL, NULL, NULL);

      }    

      CleanUp();

}

void DisplayText()

{

      //Create some DirectX text buffers

      XFONT*      m_pArial18BitmapFont;    // Pointer to the Arial18Normal Bitmap font   

      LPDIRECT3DSURFACE8 g_pFrontBuffer;

 

    //InitialiseFonts

    g_pD3DDevice->GetBackBuffer(-1,D3DBACKBUFFER_TYPE_MONO,&g_pFrontBuffer);

      DWORD dwFontCacheSize = 16 * 1024;

 

      //Load our font in - have to sepcify its loacation

      XFONT_OpenBitmapFont( L"D:\\Arial18Normal.bmf",

                           dwFontCacheSize, &m_pArial18BitmapFont );

 

      WCHAR szbuff[200] = {0};

      swprintf(szbuff, L"Hello World");

      //Top left corner of where we want to draw our text.

      float xpos = 100.0f;

      float ypos = 100.0f;

 

      //Display our text.

      m_pArial18BitmapFont->SetTextColor(D3DCOLOR_XRGB(30,255,20));

 

      m_pArial18BitmapFont->TextOut( g_pFrontBuffer, szbuff, -1, (long)xpos, (long)ypos );

 

      //Release our TextBuffers

      m_pArial18BitmapFont->Release();

      g_pFrontBuffer->Release();

 

}