Text extension, Image extension, Primitives Extension

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Sephnroth

22

Years of Service

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Joined: 10th Oct 2002

Location: United Kingdom

Posted: 28th Jul 2005 20:33

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Here are a few extensions I have written for DarkSDK to do some additional tasks. This is mainly simple stuff and tatters of them have been seen around the boards before but I figured it would be nice for me to put what I have in its entirity here to share

Some still need a little more work perhaps, I will put them all in my DarkSDK Collection post in the code snippets when I am content with them.

For now simply open up the code tags and place the code into appropriate files (header and cpp provided)

First the text extension - I have to thank Cloggy for this, its the text portion of his d3dextras dll he wrote for dbp. He shared the source with me on msn and I set about porting it to DarkSDK.

Text.h:

+ Code Snippet

enum {
	ALIGN_LEFT = 0,
	ALIGN_CENTER,
	ALIGN_RIGHT
};

void InitText();
void SetFont(int nFont, LPSTR pFont, int nFontSize, int nFontBold, int nFontItalic);
void StartText(void);
void EndText(void);
void AAText(int nFont, int x, int y, int nAlign, LPSTR pString);
void SetTextCol(int r, int g, int b, int a);

Text.cpp:

//#######################################
//	Fast Antialiased Text
//	Use instead of normal dbText()
//
//	Thanks to Cloggy from tgc forums for
//	the original dll code.
//
//  Converted from dbp dll to DarkSDK
//  addon by Sephnroth
//#######################################

#include "DarkSDK.h"
#include "d3d9.h"

int							g_nRed=255;
int							g_nGreen=255;
int							g_nBlue=255;
int							g_nAlpha=255;
int							g_nFontSize;
bool						g_Bold = false;
bool						g_Italic = false;
char						g_strFont[LF_FACESIZE];
ID3DXFont*					g_pFont[20];
ID3DXFont*					g_pFont2 = NULL;
ID3DXFont*					g_pStatsFont = NULL;
IDirect3DDevice9*			g_pd3dDevice = NULL;
ID3DXSprite*				g_pTextSprite = NULL;

void InitText() {
	g_pd3dDevice = dbGetDirect3DDevice();
}

void SetTextCol(int r, int g, int b, int a) {
	g_nRed = r;
	g_nGreen = g;
	g_nBlue = b;
	g_nAlpha = a;
}

void SetFont(int nFont, LPSTR pFont, int nFontSize, int nFontBold, int nFontItalic) {
    HRESULT hr;

if (nFont > 20)	{
		return;
	}

HDC hDC = GetDC(NULL);

int nLogPixelsY = GetDeviceCaps(hDC, LOGPIXELSY);
    ReleaseDC(NULL, hDC);

int g_nFontSize = -nFontSize * nLogPixelsY / 72;

if (nFont == 1)
		lstrcpy(g_strFont, pFont);

if (nFontBold == 1)	{
		g_Bold = true;
	} else {
		g_Bold = false;
	}

if (nFontItalic == 1) {
		g_Italic = true;
	} else {
		g_Italic = false;
	}

hr = D3DXCreateFont( g_pd3dDevice,					// D3D device
                         g_nFontSize,				    // Height
                         0,								// Width
                         g_Bold ? FW_BOLD : FW_NORMAL,  // Weight
                         1,								// MipLevels, 0 = autogen mipmaps
                         g_Italic,						// Italic
                         DEFAULT_CHARSET,				// CharSet
                         OUT_DEFAULT_PRECIS,			// OutputPrecision
                         DEFAULT_QUALITY,				// Quality
                         DEFAULT_PITCH | FF_DONTCARE,	// PitchAndFamily
                         pFont,							// pFaceName
                         &g_pFont[nFont]);              // ppFont

g_pFont[nFont]->PreloadGlyphs(32,180);

if (g_pTextSprite == NULL)
		hr = D3DXCreateSprite( g_pd3dDevice, &g_pTextSprite );

}

void StartText(void) {
	g_pTextSprite->Begin(D3DXSPRITE_ALPHABLEND | D3DXSPRITE_SORT_TEXTURE);
}

void EndText(void) {
	g_pTextSprite->End();
}

void AAText(int nFont, int x, int y, int nAlign, LPSTR pString) {
    RECT rc;

if (nFont > 20)
		return;
	
    SetRect(&rc, x, y, 0, 0 );

switch (nAlign) {
		case 1:
		{
			g_pFont[nFont]->DrawText( g_pTextSprite, pString, -1, &rc, DT_CALCRECT, D3DCOLOR_ARGB( g_nAlpha, g_nRed, g_nGreen, g_nBlue ));
			rc.left=x-((rc.right-x)/2);
			rc.right=x+((rc.right-x)/2);
			break;
		}

case 2:
		{
			g_pFont[nFont]->DrawText( g_pTextSprite, pString, -1, &rc, DT_CALCRECT, D3DCOLOR_ARGB( g_nAlpha, g_nRed, g_nGreen, g_nBlue ));
			rc.left=x-(rc.right-x);
			rc.right=x+(rc.right-x);
			break;
		}
	}

g_pFont[nFont]->DrawText( g_pTextSprite, pString, -1, &rc, DT_NOCLIP, D3DCOLOR_ARGB( g_nAlpha, g_nRed, g_nGreen, g_nBlue ));
}

+ Code Snippet

//#######################################
//	Fast Antialiased Text
//	Use instead of normal dbText()
//
//	Thanks to Cloggy from tgc forums for
//	the original dll code.
//
//  Converted from dbp dll to DarkSDK
//  addon by Sephnroth
//#######################################

#include "DarkSDK.h"
#include "d3d9.h"


int							g_nRed=255;
int							g_nGreen=255;
int							g_nBlue=255;
int							g_nAlpha=255;
int							g_nFontSize;
bool						g_Bold = false;
bool						g_Italic = false;
char						g_strFont[LF_FACESIZE];
ID3DXFont*					g_pFont[20];
ID3DXFont*					g_pFont2 = NULL;
ID3DXFont*					g_pStatsFont = NULL;
IDirect3DDevice9*			g_pd3dDevice = NULL;
ID3DXSprite*				g_pTextSprite = NULL;

void InitText() {
	g_pd3dDevice = dbGetDirect3DDevice();
}

void SetTextCol(int r, int g, int b, int a) {
	g_nRed = r;
	g_nGreen = g;
	g_nBlue = b;
	g_nAlpha = a;
}

void SetFont(int nFont, LPSTR pFont, int nFontSize, int nFontBold, int nFontItalic) {
    HRESULT hr;

    if (nFont > 20)	{
		return;
	}

	HDC hDC = GetDC(NULL);

    int nLogPixelsY = GetDeviceCaps(hDC, LOGPIXELSY);
    ReleaseDC(NULL, hDC);

    int g_nFontSize = -nFontSize * nLogPixelsY / 72;

	if (nFont == 1)
		lstrcpy(g_strFont, pFont);

	if (nFontBold == 1)	{
		g_Bold = true;
	} else {
		g_Bold = false;
	}

	if (nFontItalic == 1) {
		g_Italic = true;
	} else {
		g_Italic = false;
	}

    hr = D3DXCreateFont( g_pd3dDevice,					// D3D device
                         g_nFontSize,				    // Height
                         0,								// Width
                         g_Bold ? FW_BOLD : FW_NORMAL,  // Weight
                         1,								// MipLevels, 0 = autogen mipmaps
                         g_Italic,						// Italic
                         DEFAULT_CHARSET,				// CharSet
                         OUT_DEFAULT_PRECIS,			// OutputPrecision
                         DEFAULT_QUALITY,				// Quality
                         DEFAULT_PITCH | FF_DONTCARE,	// PitchAndFamily
                         pFont,							// pFaceName
                         &g_pFont[nFont]);              // ppFont

	g_pFont[nFont]->PreloadGlyphs(32,180);

	if (g_pTextSprite == NULL)
		hr = D3DXCreateSprite( g_pd3dDevice, &g_pTextSprite );

}


void StartText(void) {
	g_pTextSprite->Begin(D3DXSPRITE_ALPHABLEND | D3DXSPRITE_SORT_TEXTURE);
}

void EndText(void) {
	g_pTextSprite->End();
}

void AAText(int nFont, int x, int y, int nAlign, LPSTR pString) {
    RECT rc;

    if (nFont > 20)
		return;
	
    SetRect(&rc, x, y, 0, 0 );

    switch (nAlign) {
		case 1:
		{
			g_pFont[nFont]->DrawText( g_pTextSprite, pString, -1, &rc, DT_CALCRECT, D3DCOLOR_ARGB( g_nAlpha, g_nRed, g_nGreen, g_nBlue ));
			rc.left=x-((rc.right-x)/2);
			rc.right=x+((rc.right-x)/2);
			break;
		}

		case 2:
		{
			g_pFont[nFont]->DrawText( g_pTextSprite, pString, -1, &rc, DT_CALCRECT, D3DCOLOR_ARGB( g_nAlpha, g_nRed, g_nGreen, g_nBlue ));
			rc.left=x-(rc.right-x);
			rc.right=x+(rc.right-x);
			break;
		}
	}

	g_pFont[nFont]->DrawText( g_pTextSprite, pString, -1, &rc, DT_NOCLIP, D3DCOLOR_ARGB( g_nAlpha, g_nRed, g_nGreen, g_nBlue ));
}

You only need to InitText() once at the start of your program. Setup some fonts like you would create objects (you may want to make some constants for your font id's) and then simply call AAText() passing a font id to draw your text. You must call AAText() between StartText() and EndText() functions. Try and batch all your text in one go using only one Start/End block and you will get the best speed. You can use multiple blocks but the less you use the faster it will go - this is much faster than normal dbText(). You may use SetTextCol() to set the colour of the text at any time and you can set its alpha for transparent text! The header includes some constants for align codes which I recommend you use instead of passing just numbers to the AAText() function - makes it easier to read. Oh, and dont call any sdk commands which perform a drawing operation (dbBox() for example) inbetween StartText() and EndText() - it will only end in tears.

Primitives Extension - not many people may find a use for this one but I have. Adds a few extra objects which you can create. A ramp (you might want to call it a wedge), a paralellogram (like a ramp but has equal sized ends rather than one being a point) and also a 3d line which I cant take credit for because its from the Code Snippets forum, I simply ported it to darksdk.

ExtendedPrimitives.h:

+ Code Snippet

#define vpx(x) dbGetVertexDataPositionX(x)
#define vpy(x) dbGetVertexDataPositionY(x)
#define vpz(x) dbGetVertexDataPositionZ(x)
#define LockVertex(o) dbLockVertexDataForLimb(o, 0)
#define UnlockVertex() dbUnlockVertexData()
#define SetVertex(v, xp, yp, zp) dbSetVertexDataPosition(v, xp, yp, zp)


void MakeObjectRamp(int id, float width, float height, float depth);
void MakeObjectParallelogram(int id, float width, float height, float depth);
void Make3DLine(int id, float X1, float Y1, float Z1, float X2, float Y2, float Z2, int col);

ExtendedPrimitives.cpp:

#include "DarkSDK.h"
#include "ExtendedPrimitives.h"

void MakeObjectRamp(int id, float width, float height, float depth) {
   if (dbObjectExist(id)) 
	   dbDeleteObject(id);
   
	dbMakeObjectBox(id, width, height, depth);
	
	LockVertex(id);
	SetVertex(0, vpx(0), vpy(3), vpz(0));
	SetVertex(10, vpx(10), vpy(3), vpz(0));
	SetVertex(20, vpx(20), vpy(3), vpz(20));

SetVertex(1, vpx(1), vpy(2), vpz(1));
	SetVertex(11, vpx(11), vpy(2), vpz(11));
	SetVertex(16, vpx(16), vpy(2), vpz(16));
	UnlockVertex();	
	
	dbMakeMeshFromObject(1, id);
	dbMakeObject(id, 1, 0);
}

void MakeObjectParallelogram(int id, float width, float height, float depth) {
   if (dbObjectExist(id)) 
	   dbDeleteObject(id);

dbMakeObjectBox(id, width, height, depth);

LockVertex(id);
	SetVertex(0, vpx(0), vpy(0) + height, vpz(0));
	SetVertex(10, vpx(10), vpy(10) + height, vpz(10));
	SetVertex(20, vpx(20), vpy(20) + height, vpz(20));

SetVertex(1, vpx(1), vpy(1) + height, vpz(1));
	SetVertex(11, vpx(11), vpy(11) + height, vpz(11));
	SetVertex(16, vpx(16), vpy(16) + height, vpz(16));

SetVertex(2, vpx(2), vpy(2) + height, vpz(2));
	SetVertex(3, vpx(3), vpy(3) + height, vpz(3));

SetVertex(19, vpx(19), vpy(19) + height, vpz(19));
	SetVertex(21, vpx(21), vpy(21) + height, vpz(21));

SetVertex(13, vpx(13), vpy(13) + height, vpz(13));
	SetVertex(14, vpx(14), vpy(14) + height, vpz(14));
	UnlockVertex();

dbMakeMeshFromObject(1, id);
	dbMakeObject(id, 1, 0);
}

void Make3DLine(int id, float X1, float Y1, float Z1, float X2, float Y2, float Z2, int col) {
   if (dbObjectExist(id)) 
	   dbDeleteObject(id);

dbMakeObjectTriangle(id, X1, Y1, Z1, X2, Y2, Z2, X2, Y2, Z2);
   dbColorObject(id, col);
   dbSetObjectWireframe(id, 1);
}

+ Code Snippet

#include "DarkSDK.h"
#include "ExtendedPrimitives.h"

void MakeObjectRamp(int id, float width, float height, float depth) {
   if (dbObjectExist(id)) 
	   dbDeleteObject(id);
   
	dbMakeObjectBox(id, width, height, depth);
	
	LockVertex(id);
	SetVertex(0, vpx(0), vpy(3), vpz(0));
	SetVertex(10, vpx(10), vpy(3), vpz(0));
	SetVertex(20, vpx(20), vpy(3), vpz(20));

	SetVertex(1, vpx(1), vpy(2), vpz(1));
	SetVertex(11, vpx(11), vpy(2), vpz(11));
	SetVertex(16, vpx(16), vpy(2), vpz(16));
	UnlockVertex();	
	
	dbMakeMeshFromObject(1, id);
	dbMakeObject(id, 1, 0);
}

void MakeObjectParallelogram(int id, float width, float height, float depth) {
   if (dbObjectExist(id)) 
	   dbDeleteObject(id);

	dbMakeObjectBox(id, width, height, depth);

	LockVertex(id);
	SetVertex(0, vpx(0), vpy(0) + height, vpz(0));
	SetVertex(10, vpx(10), vpy(10) + height, vpz(10));
	SetVertex(20, vpx(20), vpy(20) + height, vpz(20));

	SetVertex(1, vpx(1), vpy(1) + height, vpz(1));
	SetVertex(11, vpx(11), vpy(11) + height, vpz(11));
	SetVertex(16, vpx(16), vpy(16) + height, vpz(16));

	SetVertex(2, vpx(2), vpy(2) + height, vpz(2));
	SetVertex(3, vpx(3), vpy(3) + height, vpz(3));

	SetVertex(19, vpx(19), vpy(19) + height, vpz(19));
	SetVertex(21, vpx(21), vpy(21) + height, vpz(21));

	SetVertex(13, vpx(13), vpy(13) + height, vpz(13));
	SetVertex(14, vpx(14), vpy(14) + height, vpz(14));
	UnlockVertex();

	dbMakeMeshFromObject(1, id);
	dbMakeObject(id, 1, 0);
}

void Make3DLine(int id, float X1, float Y1, float Z1, float X2, float Y2, float Z2, int col) {
   if (dbObjectExist(id)) 
	   dbDeleteObject(id);

   dbMakeObjectTriangle(id, X1, Y1, Z1, X2, Y2, Z2, X2, Y2, Z2);
   dbColorObject(id, col);
   dbSetObjectWireframe(id, 1);
}

Finally, ExtendedImage. This will allow you to perform drawing operations into darkbasic Image types - usually you would have to call your drawing commands like Box etc onto a bitmap and then use GetImage() to make a texture out of it, you can draw streight to the image with these. The image must, naturally, exist.

You can draw pixels, lines and circles. Its pretty fast (fast enough for the dynamic texture generation in Iro) as it uses breshams-based integer maths functions instead of floating point.

ExtendedImage.h:

+ Code Snippet

void PutImagePixel(int Dest, int x, int y, DWORD c);
void DrawImageLine(int Dest, int x1, int y1, int x2, int y2, DWORD c2);
void DrawImageCircle(int Dest, int CX, int CY, int R, DWORD c);
int GetMemOffset(int format);

ExtendedImage.cpp:

#include "DarkSDK.h"
#include "d3d9.h"
#include "ExtendedImage.h"

void PutImagePixel(int Dest, int x, int y, DWORD c) {	
    
	LPDIRECT3DSURFACE9 DestSurface = 0; 
	D3DLOCKED_RECT DestRect;          
	D3DSURFACE_DESC DestDesc;

int dmem_loc;
	int w, h, b;
	unsigned char *DestAddr;

dbGetImagePointer(Dest)->GetSurfaceLevel(0, &DestSurface);

DestSurface->GetDesc(&DestDesc);
	DestSurface->LockRect(&DestRect, 0, 0);

DestAddr = (unsigned char*)DestRect.pBits; 	
	w = dbGetImageWidth(Dest);
	h = dbGetImageHeight(Dest);

b = GetMemOffset(DestDesc.Format);

if (x >= 0 && x < w-1 && y >= 0 && y < h-1) {
		dmem_loc = (x * b) + ((y) * DestRect.Pitch);
		*(DWORD*)(DestAddr + dmem_loc) = c;
	}

DestSurface->UnlockRect();
	DestSurface->Release();
	DestSurface = 0;
    
}

void DrawImageLine(int Dest, int x1, int y1, int x2, int y2, DWORD c2) {

LPDIRECT3DSURFACE9 DestSurface = 0; 
	D3DLOCKED_RECT DestRect;          
	D3DSURFACE_DESC DestDesc;

int dmem_loc;
	int w, h, b;
	unsigned char *DestAddr;

dbGetImagePointer(Dest)->GetSurfaceLevel(0, &DestSurface);
	DestSurface->GetDesc(&DestDesc);
	DestSurface->LockRect(&DestRect, 0, 0);

DestAddr = (unsigned char*)DestRect.pBits; 	    
	w = dbGetImageWidth(Dest);
	h = dbGetImageHeight(Dest);
	
	b = GetMemOffset(DestDesc.Format);

int u = 0;
    int dx, dy, c, M, xinc = 1, yinc = 1;
	int hits=0;
    int x3 = x1;
    int y3 = y1;
    dx = x2 - x1;
    dy = y2 - y1;

if (dx < 0) { xinc = -1; dx = -dx; }
    if (dy < 0) { yinc = -1; dy = -dy; }

if (dy < dx) {
        c = 2 * dx; 
		M = 2 * dy;

while (x3 != x2) {
			if (x3 >= 0 && x3 < w-1 && y3 >= 0 && y3 < h-1) {
				dmem_loc = (x3 * b) + ((y3) * DestRect.Pitch);
				*(DWORD*)(DestAddr + dmem_loc) = c2;
			}

x3 += xinc; 
			u += M;

if (u > dx) { y3 += yinc; u -= c; }
        }

} else {
        c = 2 * dy; 
		M = 2 * dx;

while(y3 != y2) {
			if (x3 >= 0 && x3 < w-1 && y3 >= 0 && y3 < h-1) {
				dmem_loc = (x3 * b) + ((y3) * DestRect.Pitch);
				*(DWORD*)(DestAddr + dmem_loc) = c2;
			}

y3 += yinc; 
			u += M;

if(u > dy) { x3 += xinc; u -= c; }
        }
    }

if (x3 >= 0 && x3 < w-1 && y3 >= 0 && y3 < h-1) {
		dmem_loc = (x3 * b) + ((y3) * DestRect.Pitch);
		*(DWORD*)(DestAddr + dmem_loc) = c2;
	}

DestSurface->UnlockRect();
	DestSurface->Release();
	DestSurface = 0;

}

void DrawImageCircle(int Dest, int CX, int CY, int R, DWORD c) {
	LPDIRECT3DSURFACE9 DestSurface = 0; 
	D3DLOCKED_RECT DestRect;          
	D3DSURFACE_DESC DestDesc;

int dmem_loc;
	int w, h;
	unsigned char *DestAddr;

dbGetImagePointer(Dest)->GetSurfaceLevel(0, &DestSurface);
	DestSurface->GetDesc(&DestDesc);
	DestSurface->LockRect(&DestRect, 0, 0);

DestAddr = (unsigned char*)DestRect.pBits;

int X, Y;
	int XChange, YChange;
	int RadiusError;

X = R;
	Y = 0;

XChange = 1 - 2 * R;
	YChange = 1;
	RadiusError = 0;

w = dbGetImageWidth(Dest);
	h = dbGetImageHeight(Dest);

while(X > Y) {
	
		/*
		dbDot(CX+X, CY+Y);// {point in octant 1}
		dbDot(CX-X, CY+Y);// {point in octant 4}
	//	dbDot(CX-X, CY-Y);// {point in octant 5}
	//	dbDot(CX+X, CY-Y);// {point in octant 8}
	//	dbDot(CX+Y, CY+X);// {point in octant 2}
	//	dbDot(CX-Y, CY+X);// {point in octant 3}
		dbDot(CX-Y, CY-X);// {point in octant 6}
		dbDot(CX+Y, CY-X);
		*/

if (CX+X >= 0 && CX+X < w-1 && CY+Y >= 0 && CY+Y < h-1) {
			dmem_loc = ((CX+X) * 4) + ((CY +Y) * DestRect.Pitch);
			*(DWORD*)(DestAddr + dmem_loc) = c;
		}

if (CX-X >= 0 && CX-X < w-1 && CY+Y >= 0 && CY+Y < h-1) {
			dmem_loc = ((CX-X) * 4) + ((CY +Y) * DestRect.Pitch);
			*(DWORD*)(DestAddr + dmem_loc) = c;
		}

if (CX-X >= 0 && CX-X < w-1 && CY-Y >= 0 && CY-Y < h-1) {
			dmem_loc = ((CX-X) * 4) + ((CY -Y) * DestRect.Pitch);
			*(DWORD*)(DestAddr + dmem_loc) = c;
		}

if (CX+X >= 0 && CX+X < w-1 && CY-Y >= 0 && CY-Y < h-1) {
			dmem_loc = ((CX+X) * 4) + ((CY -Y) * DestRect.Pitch);
			*(DWORD*)(DestAddr + dmem_loc) = c;
		}

if (CX+Y >= 0 && CX+Y < w-1 && CY+X >= 0 && CY+X < h-1) {
			dmem_loc = ((CX+Y) * 4) + ((CY +X) * DestRect.Pitch);
			*(DWORD*)(DestAddr + dmem_loc) = c;
		}

if (CX-Y >= 0 && CX-Y < w-1 && CY+X >= 0 && CY+X < h-1) {
			dmem_loc = ((CX-Y) * 4) + ((CY +X) * DestRect.Pitch);
			*(DWORD*)(DestAddr + dmem_loc) = c;
		}

if (CX-Y >= 0 && CX-Y < w-1 && CY-X >= 0 && CY-X < h-1) {
			dmem_loc = ((CX-Y) * 4) + ((CY -X) * DestRect.Pitch);
			*(DWORD*)(DestAddr + dmem_loc) = c;
		}

if (CX+Y >= 0 && CX+Y < w-1 && CY-X >= 0 && CY-X < h-1) {
			dmem_loc = ((CX+Y) * 4) + ((CY -X) * DestRect.Pitch);
			*(DWORD*)(DestAddr + dmem_loc) = c;
		}

Y++;

RadiusError += YChange;
		YChange += 2;

if (2 * RadiusError + XChange > 0 ) {
			X--;
			RadiusError += XChange;
			XChange += 2;
		}
	}

DestSurface->UnlockRect();
	DestSurface->Release();
	DestSurface = 0;
}

int GetMemOffset(int format) {

//if (dbScreenDepth() == 16)
		//return 3;

switch(format) {
			
		case D3DFMT_R8G8B8:
			return 3;
			break;

case D3DFMT_A8R8G8B8:
			return 4;
			break;

case D3DFMT_X8R8G8B8:
			return 4;
			break;

case D3DFMT_R5G6B5:
			return 2;
			break;

case D3DFMT_X1R5G5B5:
			return 2;
			break;

case D3DFMT_A1R5G5B5:
			return 2;
			break;

case D3DFMT_A4R4G4B4:
			return 2;
			break;

case D3DFMT_R3G3B2:
			return 1;
			break;

case D3DFMT_A8:
			return 1;
			break;

case D3DFMT_A8R3G3B2:
			return 2;
			break;

case D3DFMT_X4R4G4B4:
			return 2;
			break;

case D3DFMT_A2B10G10R10:
			return 4;
			break;

case D3DFMT_A8B8G8R8:
			return 4;
			break;

case D3DFMT_X8B8G8R8:
			return 4;
			break;

case D3DFMT_G16R16:
			return 4;
			break;

case D3DFMT_A2R10G10B10:
			return 4;
			break;
	}
	return 0;
}

+ Code Snippet

#include "DarkSDK.h"
#include "d3d9.h"
#include "ExtendedImage.h"

void PutImagePixel(int Dest, int x, int y, DWORD c) {	
    
	LPDIRECT3DSURFACE9 DestSurface = 0; 
	D3DLOCKED_RECT DestRect;          
	D3DSURFACE_DESC DestDesc;         

	int dmem_loc;
	int w, h, b;
	unsigned char *DestAddr;
	
	

	dbGetImagePointer(Dest)->GetSurfaceLevel(0, &DestSurface);

	DestSurface->GetDesc(&DestDesc);
	DestSurface->LockRect(&DestRect, 0, 0);

	DestAddr = (unsigned char*)DestRect.pBits; 	
	w = dbGetImageWidth(Dest);
	h = dbGetImageHeight(Dest);

	b = GetMemOffset(DestDesc.Format);

	if (x >= 0 && x < w-1 && y >= 0 && y < h-1) {
		dmem_loc = (x * b) + ((y) * DestRect.Pitch);
		*(DWORD*)(DestAddr + dmem_loc) = c;
	}

	DestSurface->UnlockRect();
	DestSurface->Release();
	DestSurface = 0;
    
}


void DrawImageLine(int Dest, int x1, int y1, int x2, int y2, DWORD c2) {

	LPDIRECT3DSURFACE9 DestSurface = 0; 
	D3DLOCKED_RECT DestRect;          
	D3DSURFACE_DESC DestDesc;         

	int dmem_loc;
	int w, h, b;
	unsigned char *DestAddr;



	dbGetImagePointer(Dest)->GetSurfaceLevel(0, &DestSurface);
	DestSurface->GetDesc(&DestDesc);
	DestSurface->LockRect(&DestRect, 0, 0);

	DestAddr = (unsigned char*)DestRect.pBits; 	    
	w = dbGetImageWidth(Dest);
	h = dbGetImageHeight(Dest);
	
	b = GetMemOffset(DestDesc.Format);

	int u = 0;
    int dx, dy, c, M, xinc = 1, yinc = 1;
	int hits=0;
    int x3 = x1;
    int y3 = y1;
    dx = x2 - x1;
    dy = y2 - y1;

    if (dx < 0) { xinc = -1; dx = -dx; }
    if (dy < 0) { yinc = -1; dy = -dy; }

    if (dy < dx) {
        c = 2 * dx; 
		M = 2 * dy;

        while (x3 != x2) {
			if (x3 >= 0 && x3 < w-1 && y3 >= 0 && y3 < h-1) {
				dmem_loc = (x3 * b) + ((y3) * DestRect.Pitch);
				*(DWORD*)(DestAddr + dmem_loc) = c2;
			}

            x3 += xinc; 
			u += M;

            if (u > dx) { y3 += yinc; u -= c; }
        }

    } else {
        c = 2 * dy; 
		M = 2 * dx;

        while(y3 != y2) {
			if (x3 >= 0 && x3 < w-1 && y3 >= 0 && y3 < h-1) {
				dmem_loc = (x3 * b) + ((y3) * DestRect.Pitch);
				*(DWORD*)(DestAddr + dmem_loc) = c2;
			}

            y3 += yinc; 
			u += M;

            if(u > dy) { x3 += xinc; u -= c; }
        }
    }


	if (x3 >= 0 && x3 < w-1 && y3 >= 0 && y3 < h-1) {
		dmem_loc = (x3 * b) + ((y3) * DestRect.Pitch);
		*(DWORD*)(DestAddr + dmem_loc) = c2;
	}


	DestSurface->UnlockRect();
	DestSurface->Release();
	DestSurface = 0;

}


void DrawImageCircle(int Dest, int CX, int CY, int R, DWORD c) {
	LPDIRECT3DSURFACE9 DestSurface = 0; 
	D3DLOCKED_RECT DestRect;          
	D3DSURFACE_DESC DestDesc;         

	int dmem_loc;
	int w, h;
	unsigned char *DestAddr;

	dbGetImagePointer(Dest)->GetSurfaceLevel(0, &DestSurface);
	DestSurface->GetDesc(&DestDesc);
	DestSurface->LockRect(&DestRect, 0, 0);

	DestAddr = (unsigned char*)DestRect.pBits; 	

	int X, Y;
	int XChange, YChange;
	int RadiusError;

	X = R;
	Y = 0;

	XChange = 1 - 2 * R;
	YChange = 1;
	RadiusError = 0;

	w = dbGetImageWidth(Dest);
	h = dbGetImageHeight(Dest);

	while(X > Y) {
	
		/*
		dbDot(CX+X, CY+Y);// {point in octant 1}
		dbDot(CX-X, CY+Y);// {point in octant 4}
	//	dbDot(CX-X, CY-Y);// {point in octant 5}
	//	dbDot(CX+X, CY-Y);// {point in octant 8}
	//	dbDot(CX+Y, CY+X);// {point in octant 2}
	//	dbDot(CX-Y, CY+X);// {point in octant 3}
		dbDot(CX-Y, CY-X);// {point in octant 6}
		dbDot(CX+Y, CY-X);
		*/

		if (CX+X >= 0 && CX+X < w-1 && CY+Y >= 0 && CY+Y < h-1) {
			dmem_loc = ((CX+X) * 4) + ((CY +Y) * DestRect.Pitch);
			*(DWORD*)(DestAddr + dmem_loc) = c;
		}

		if (CX-X >= 0 && CX-X < w-1 && CY+Y >= 0 && CY+Y < h-1) {
			dmem_loc = ((CX-X) * 4) + ((CY +Y) * DestRect.Pitch);
			*(DWORD*)(DestAddr + dmem_loc) = c;
		}

		if (CX-X >= 0 && CX-X < w-1 && CY-Y >= 0 && CY-Y < h-1) {
			dmem_loc = ((CX-X) * 4) + ((CY -Y) * DestRect.Pitch);
			*(DWORD*)(DestAddr + dmem_loc) = c;
		}

		if (CX+X >= 0 && CX+X < w-1 && CY-Y >= 0 && CY-Y < h-1) {
			dmem_loc = ((CX+X) * 4) + ((CY -Y) * DestRect.Pitch);
			*(DWORD*)(DestAddr + dmem_loc) = c;
		}

		if (CX+Y >= 0 && CX+Y < w-1 && CY+X >= 0 && CY+X < h-1) {
			dmem_loc = ((CX+Y) * 4) + ((CY +X) * DestRect.Pitch);
			*(DWORD*)(DestAddr + dmem_loc) = c;
		}

		if (CX-Y >= 0 && CX-Y < w-1 && CY+X >= 0 && CY+X < h-1) {
			dmem_loc = ((CX-Y) * 4) + ((CY +X) * DestRect.Pitch);
			*(DWORD*)(DestAddr + dmem_loc) = c;
		}

		if (CX-Y >= 0 && CX-Y < w-1 && CY-X >= 0 && CY-X < h-1) {
			dmem_loc = ((CX-Y) * 4) + ((CY -X) * DestRect.Pitch);
			*(DWORD*)(DestAddr + dmem_loc) = c;
		}

		if (CX+Y >= 0 && CX+Y < w-1 && CY-X >= 0 && CY-X < h-1) {
			dmem_loc = ((CX+Y) * 4) + ((CY -X) * DestRect.Pitch);
			*(DWORD*)(DestAddr + dmem_loc) = c;
		}

		Y++;

		RadiusError += YChange;
		YChange += 2;

		if (2 * RadiusError + XChange > 0 ) {
			X--;
			RadiusError += XChange;
			XChange += 2;
		}
	}


	DestSurface->UnlockRect();
	DestSurface->Release();
	DestSurface = 0;
}


int GetMemOffset(int format) {

	//if (dbScreenDepth() == 16)
		//return 3;

	switch(format) {
			
		case D3DFMT_R8G8B8:
			return 3;
			break;

		case D3DFMT_A8R8G8B8:
			return 4;
			break;

		case D3DFMT_X8R8G8B8:
			return 4;
			break;

		case D3DFMT_R5G6B5:
			return 2;
			break;

		case D3DFMT_X1R5G5B5:
			return 2;
			break;

		case D3DFMT_A1R5G5B5:
			return 2;
			break;

		case D3DFMT_A4R4G4B4:
			return 2;
			break;

		case D3DFMT_R3G3B2:
			return 1;
			break;

		case D3DFMT_A8:
			return 1;
			break;

		case D3DFMT_A8R3G3B2:
			return 2;
			break;

		case D3DFMT_X4R4G4B4:
			return 2;
			break;

		case D3DFMT_A2B10G10R10:
			return 4;
			break;

		case D3DFMT_A8B8G8R8:
			return 4;
			break;

		case D3DFMT_X8B8G8R8:
			return 4;
			break;

		case D3DFMT_G16R16:
			return 4;
			break;

		case D3DFMT_A2R10G10B10:
			return 4;
			break;
	}
	return 0;
}

Despite my attempt at checking the format (as you can see) it still seems to have problems when the screen depth is set to 16 - not entirely sure why :/

Anyway! Hope they are usful to someone. I will add/improve as time goes by - if you make your own additions and improvments then let me know! Maybe we will one day end up with a big set of community made extensions

DarkSDK/WinAPI Tutorial

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IanM

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Joined: 11th Sep 2002

Location: In my moon base

Posted: 29th Jul 2005 02:05 Edited at: 3rd Dec 2005 13:25

Link

Heres a little key-stroke handler I've been using recently

KeyEvent.hpp

+ Code Snippet

#pragma once

#include <wtypes.h>
#include <list>

class KeyEvent
{
public:
    virtual bool KeyDown(BYTE VirtualKey) = 0;
    virtual bool KeyUp(BYTE VirtualKey) = 0;
};

class Key
{
public:
    Key();
    virtual ~Key();

    void Update();

    void Register(KeyEvent*);
    void Unregister(KeyEvent*);

    bool KeyIsDown(BYTE VirtualKey);

protected:
    static void DrainMessagePump();

private:
    BYTE KeyStates[256];
    BYTE PreviousKeyStates[256];

    typedef std::list<KeyEvent*> EventList;
    typedef EventList::iterator  EventListPtr;

    EventList Events;
};

KeyEvent.cpp

#include "KeyEvents.hpp"

Key::Key()
{
    DrainMessagePump();
    ::GetKeyboardState(KeyStates);
    ::memcpy(PreviousKeyStates, KeyStates, sizeof(KeyStates));
}

Key::~Key()
{
}

void Key::Update()
{
    DrainMessagePump();
    GetKeyboardState(KeyStates);
    for (int i = 0; i < 256; ++i)
    {
        if (PreviousKeyStates[i] != KeyStates[i])
        {
            PreviousKeyStates[i] = KeyStates[i];

for (EventListPtr P = Events.begin(); P != Events.end(); ++P)
            {
                if (  (KeyStates[i] & 0x80) ? (*P)->KeyDown(i) : (*P)->KeyUp(i) )
                {
                    // If the keyup/keydown call returns 'true' then no more processing needs to be done
                    break;
                }
            }
        }
    }
}

void Key::Register(KeyEvent* E)
{
    Events.push_front(E);
}

void Key::Unregister(KeyEvent* E)
{
    Events.remove(E);
}

bool Key::KeyIsDown(BYTE VirtualKey)
{
    return (KeyStates[ VirtualKey ] & 0x80) != 0;
}

void Key::DrainMessagePump()
{
    // Ensure that the message pump is empty, so that
    // all key presses have been recorded correctly
    MSG Msg;
    while ( PeekMessage(&Msg, 0, 0, 0, PM_REMOVE) )
    {
        TranslateMessage(&Msg); 
        DispatchMessage(&Msg); 
    }
}

+ Code Snippet

#include "KeyEvents.hpp"

Key::Key()
{
    DrainMessagePump();
    ::GetKeyboardState(KeyStates);
    ::memcpy(PreviousKeyStates, KeyStates, sizeof(KeyStates));
}


Key::~Key()
{
}


void Key::Update()
{
    DrainMessagePump();
    GetKeyboardState(KeyStates);
    for (int i = 0; i < 256; ++i)
    {
        if (PreviousKeyStates[i] != KeyStates[i])
        {
            PreviousKeyStates[i] = KeyStates[i];

            for (EventListPtr P = Events.begin(); P != Events.end(); ++P)
            {
                if (  (KeyStates[i] & 0x80) ? (*P)->KeyDown(i) : (*P)->KeyUp(i) )
                {
                    // If the keyup/keydown call returns 'true' then no more processing needs to be done
                    break;
                }
            }
        }
    }
}


void Key::Register(KeyEvent* E)
{
    Events.push_front(E);
}


void Key::Unregister(KeyEvent* E)
{
    Events.remove(E);
}


bool Key::KeyIsDown(BYTE VirtualKey)
{
    return (KeyStates[ VirtualKey ] & 0x80) != 0;
}

    
void Key::DrainMessagePump()
{
    // Ensure that the message pump is empty, so that
    // all key presses have been recorded correctly
    MSG Msg;
    while ( PeekMessage(&Msg, 0, 0, 0, PM_REMOVE) )
    {
        TranslateMessage(&Msg); 
        DispatchMessage(&Msg); 
    }
}

Simple usage:

+ Code Snippet

#include <DarkSDK.h>

#include "KeyEvents.hpp"

class DisplayKeyEvent : public KeyEvent
{
public:
    bool KeyDown(BYTE VK)
    {
        DisplayEvent("Down", VK);
        return true;
    }
    bool KeyUp(BYTE VK)
    {
        DisplayEvent("Up", VK);
        return true;
    }
    void DisplayEvent(char* KeyDir, BYTE VK)
    {
        char Buffer[256];
        sprintf(Buffer, "Key %d is %s", VK, KeyDir);
        dbPrint(Buffer);
    }
};

void DarkSDK()
{
    DisplayKeyEvent* Handler( new DisplayKeyEvent);
    Key KeyHandler;

    KeyHandler.Register( Handler );

    while ( ! KeyHandler.KeyIsDown(VK_ESCAPE) && LoopSDK() )
    {
        KeyHandler.Update();
        dbSync();
    }

    KeyHandler.Unregister( Handler );
    delete Handler;
}

Registered handlers are called on a newest-first type basis.

I use the boost smart pointer rather than the raw pointers I've shown here, but the effect is the same. When the usage count of the smart pointer is reduced to 1, I free the handler object.

I've also considered putting together a per-key type event handler together ... maybe sometime soon.

[edit]fix to code

For free Plug-ins and source code http://www.matrix1.demon.co.uk

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Morcilla

21

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Joined: 1st Dec 2002

Location: Spain

Posted: 9th Oct 2005 23:16

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Sephnroth,
Excellent work, congratulations

It is a very useful code, I'll credit Cloggy and you in my program.

Ian,
I suppose that your code is for replacing dbInkey/dbScanCode. I get this error at the "Simple usage" code when compiling:

In this line:

+ Code Snippet

    DisplayKeyEvent* Handler( new Handler );

It says:

+ Code Snippet

error C2061: syntax error : identifier 'Handler'
fatal error C1903: unable to recover from previous error(s); stopping compilation

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IanM

Retired Moderator

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Joined: 11th Sep 2002

Location: In my moon base

Posted: 10th Oct 2005 19:42

Link

Oops, typo! That line should be:

+ Code Snippet

DisplayKeyEvent* Handler( new DisplayKeyEvent);

Yes, it is a simple replacement for dbKeyState, dbScanCode or dbInkey - all of those check the current state of the key, which can change between syncs. This code uses windows functionality to get the current state of the keyboard in a snapshot, and then calls the registered objects with the changes.

As an example, you might derive your own class from the KeyEvent class that allows you to control your player. As the code also passes the keypresses onto the most recently registered handler first, you could have a console that registers itself when opened and gets the first bite at all keypresses that take place.

For free Plug-ins and source code http://www.matrix1.demon.co.uk

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miko

19

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Joined: 2nd Oct 2005

Location: Germany

Posted: 11th Oct 2005 21:22

Link

Now this is what I call a very interesting thread.
Hopefully, I will be able to contribute one day, too.
Thank you all. Valuable code!!

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Lampton Worm

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Joined: 4th Sep 2002

Location: United Kingdom

Posted: 12th Oct 2005 16:10

Link

Hi,

Can you provide a simple usage for the Text extension please?

Cheers

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Sephnroth

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Joined: 10th Oct 2002

Location: United Kingdom

Posted: 12th Oct 2005 18:40

Link

Certainly

In your project make a new source file and a new header file, copy the respective code from the code blocks into them. Recommend you name them Text.cpp and Text.h.

OR

If you already have those files on your hd with the code copied in then add them to your project instead.

When your project contains Text.h and Text.cpp with the right code inside, goto your main.cpp and add at the top:

#include "Text.h"

Then just before your main game loop add:

InitText();

so in a typical empty DarkSDK application it would all look like:

+ Code Snippet

#include "DarkSDK.h"
#include "text.h"

void DarkSDK(void) {
	dbSyncOn();
	dbSyncRate(0);

	InitText();
	
	while (LoopSDK()) {
		if (dbEscapeKey())
			return;

		dbSync();
	}
}

Now you need to setup some fonts to use. The function you need and its parameters are:

void SetFont(int nFont, LPSTR pFont, int nFontSize, int nFontBold, int nFontItalic);

nFont is an integer number and its the font id, just like a darkbasic object ID. pFont is a string saying the name of the font you would like to use, like Arial. The font must of course be installed on the system running the program. nFontSize is the size of the text that will be printed using this font, standard font point size. nFontBold is wether the text should be bold or not, set it as 0 for normal or 1 for bold. nFontItalic works the same way but for italics.

To setup a font with an id of 1 that uses arial, a point size of 12 and is not bold or italic we add this:

SetFont(1, "Arial", 12, 0, 0);

Anywhere after InitText() and before the main game loop is a good place for it. If you need to setup alot of fonts for your game you could make a function called SetupFonts(); and just add all the SetFont lines to it and have it called after the InitText line.

Anyway, to eventually print some text to the screen you use AAText(), but you must call ALL AAText() lines between a StartText() and EndText() block. For Example, add this to your main loop:

StartText();
AAText(1, 10, 10, ALIGN_LEFT, "Hello World!");
EndText();

That would output the text "Hello World!" to position x: 10 y: 10 on the screen using font id 1 and the text will be left aligned. I made some simple constants for text alignment, valid ones are:

ALIGN_LEFT
ALIGN_RIGHT
ALIGN_CENTER

If you want to print more than one line its VERY advisiable to try and do it in the same start/end block as the rest of your text, for example you should do this:

+ Code Snippet

StartText();
AAText(1, 10, 10, ALIGN_LEFT, "Hello World!");
AAText(1, 10, 20, ALIGN_LEFT, "How are you?");
EndText();

and NOT this:

+ Code Snippet

StartText();
AAText(1, 10, 10, ALIGN_LEFT, "Hello World!");
EndText();

StartText();
AAText(1, 10, 20, ALIGN_LEFT, "How are you?");
EndText();

they both work but the last example is much slower. it wont be too bad with 2 start/end blocks like that, upto 4/5 maybe - but the more you use the slower you can get - the most effcient program will only use one (but i know thats sometimes impossiable).

This is the main reason this text extension is so much faster than darkbasics, it appears that every time you call dbText() its doing the equivilent of opening another start/end block.

HOWEVER, the thing that makes it hard to use only one start/end block is that you MUST NOT use ANY darksdk commands that draw to the screen whilst you are in the middle of a start/end block. example:

+ Code Snippet

StartText();
AAText(1, 10, 20, ALIGN_LEFT, "How are you?");
dbBox(10, 10, 20, 20);
EndText();

BIG NO NO. Try it and see why

(actually, i just tested that and it worked fine >.>;; but i know from experiance in iro its a bad idea when you have a full game running, the screen gets corrupted and it all gets messy, avoid it)

When doing things like making dialog boxes it does mean you have to think very carfully where to put the text, sometimes i found i had to use 2 blocks - but do your best

Anyway, thats pretty much it. you can use SetTextCol() to set the colour and transparancy value of text at any point (yes its fine in and out of start/end blocks). When you AAText() it uses the last set value with SetTextCol().

Any more questions just ask, sorry if this came out a bit long xD

full source:

+ Code Snippet

#include "DarkSDK.h"
#include "text.h"

void DarkSDK(void) {
	dbSyncOn();
	dbSyncRate(0);

	InitText();
	SetFont(1, "Arial", 12, 0, 0);


	while (LoopSDK()) {
		if (dbEscapeKey())
			return;


		StartText();
		AAText(1, 10, 10, ALIGN_LEFT, "Hello World!");		
		EndText();

		dbSync();
	}
}

DarkSDK/WinAPI Tutorial

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miko

19

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Joined: 2nd Oct 2005

Location: Germany

Posted: 13th Oct 2005 20:29

Link

Wel, here are my 2cents

Based on the text extension above, I made a class (CText). Fiddled a bit with the code, too (hoping that it would run a few ticks faster).

For a usage example, please see the demo app code below.

Okay, here we go:

This is the header

+ Code Snippet

// Text.h

#pragma once

typedef enum E_TEXT_ALIGN_TYPE
{
	ALIGN_LEFT,
	ALIGN_CENTER,
	ALIGN_RIGHT

 } TEXT_ALIGN_TYPE;

class CText
{
public:
	
	CText(void);
	~CText(void);
	
	static void InitTextOnce();
	void SetFont(char *pFont, int nFontSize, int nFontBold, int nFontItalic);
	void SetTextColor(BYTE r, BYTE g, BYTE b, BYTE a);
	
	static void StartText(void);
	static void EndText(void);
	void TextOut(int x, int y, TEXT_ALIGN_TYPE nAlign, char *pString);

private:

	static IDirect3DDevice9* s_pDevice;
	static ID3DXSprite*		 s_pTextSprite;
	static int               s_iSpriteRefCount;

	BYTE m_cRed;  
	BYTE m_cGreen;
	BYTE m_cBlue;
	BYTE m_cAlpha;
	
	ID3DXFont* m_pFont;	
};

The code itself

// Text.cpp

#include "GlobalHeader.h"

IDirect3DDevice9* CText::s_pDevice     = NULL;
ID3DXSprite*	  CText::s_pTextSprite = NULL;
int               CText::s_iSpriteRefCount = 0;

CText::CText(void) // Constructor
{
	m_pFont       = NULL;
	
	m_cRed		= 0xff; // Standard color/alpha values
	m_cGreen	= 0xff;
	m_cBlue		= 0xff;
	m_cAlpha	= 0xff;

CText::s_iSpriteRefCount++;
}

CText::~CText(void) // Destructor
{
	if (m_pFont) { m_pFont->Release(); m_pFont = NULL; }

CText::s_iSpriteRefCount--;
	if (s_iSpriteRefCount>0) return;
	
	if (s_pTextSprite) { s_pTextSprite->Release(); s_pTextSprite = NULL; }
}

void CText::InitTextOnce() // Call once, to receive the Device pointer
{
	CText::s_pDevice = dbGetDirect3DDevice();
}

void CText::SetTextColor(BYTE r, BYTE g, BYTE b, BYTE a)
{
	m_cRed	 = r;
	m_cGreen = g;
	m_cBlue	 = b;
	m_cAlpha = a;
}

void CText::SetFont(char *pFont, int iFontSize, int iFontBold, int iFontItalic)
{
    if (m_pFont)
	{
		m_pFont->Release();
		m_pFont = NULL;
	}
	
	HRESULT hr;

HDC hDC = GetDC(NULL);
    int nLogPixelsY = GetDeviceCaps(hDC, LOGPIXELSY);
    ReleaseDC(NULL, hDC);

int iRealSize = -iFontSize * nLogPixelsY / 72;

hr = D3DXCreateFont( CText::s_pDevice,				// D3D device
                         iRealSize,						// Height
                         0,								// Width
                         (iFontBold?FW_BOLD:FW_NORMAL), // Weight
                         1,								// MipLevels, 0 = autogen mipmaps
                         (iFontItalic?true:false),		// Italic
                         DEFAULT_CHARSET,				// CharSet
                         OUT_DEFAULT_PRECIS,			// OutputPrecision
                         DEFAULT_QUALITY,				// Quality
                         DEFAULT_PITCH | FF_DONTCARE,	// PitchAndFamily
                         pFont,							// pFaceName
                         &m_pFont);						// ppFont

if (hr != S_OK) return; // Error, do not create Sprite.
    
	m_pFont->PreloadGlyphs(32,180);

if (!CText::s_pTextSprite) D3DXCreateSprite(CText::s_pDevice, &CText::s_pTextSprite);
}

void CText::StartText(void) // Call before one or more TextOut blocks
{
	if (!CText::s_pTextSprite) return;
	CText::s_pTextSprite->Begin(D3DXSPRITE_ALPHABLEND | D3DXSPRITE_SORT_TEXTURE);
}

void CText::EndText(void) // Call after one or more TextOut blocks
{
	if (!CText::s_pTextSprite) return; 
	CText::s_pTextSprite->End();
}

void CText::TextOut(int x, int y, TEXT_ALIGN_TYPE nAlign, char *pString)
{
    if ((!CText::s_pTextSprite)||(!m_pFont)) return;

RECT rc; 
    SetRect(&rc, x, y, 0, 0 );

D3DCOLOR dwColor = D3DCOLOR_ARGB(m_cAlpha, m_cRed, m_cGreen, m_cBlue);

switch (nAlign)
	{
		case ALIGN_LEFT: break; // align left is standard
	
		case ALIGN_CENTER:
		{
			m_pFont->DrawText(CText::s_pTextSprite, pString, -1, &rc, DT_CALCRECT, dwColor);
			rc.left  = x-((rc.right-x)/2); // only set rc.left. drawing NO_CLIP
			break;
		}

case ALIGN_RIGHT:
		{
			m_pFont->DrawText(CText::s_pTextSprite, pString, -1, &rc, DT_CALCRECT, dwColor);
			rc.left  = x-(rc.right-x); // only set rc.lect. drawing NO_CLIP
			break;
		}
	}

m_pFont->DrawText(CText::s_pTextSprite, pString, -1, &rc, DT_NOCLIP, dwColor);
}

+ Code Snippet

// Text.cpp

#include "GlobalHeader.h"

IDirect3DDevice9* CText::s_pDevice     = NULL;
ID3DXSprite*	  CText::s_pTextSprite = NULL;
int               CText::s_iSpriteRefCount = 0;

CText::CText(void) // Constructor
{
	m_pFont       = NULL;
	
	m_cRed		= 0xff; // Standard color/alpha values
	m_cGreen	= 0xff;
	m_cBlue		= 0xff;
	m_cAlpha	= 0xff;

	CText::s_iSpriteRefCount++;
}

CText::~CText(void) // Destructor
{
	if (m_pFont) { m_pFont->Release(); m_pFont = NULL; }

	CText::s_iSpriteRefCount--;
	if (s_iSpriteRefCount>0) return;
	
	if (s_pTextSprite) { s_pTextSprite->Release(); s_pTextSprite = NULL; }
}

void CText::InitTextOnce() // Call once, to receive the Device pointer
{
	CText::s_pDevice = dbGetDirect3DDevice();
}

void CText::SetTextColor(BYTE r, BYTE g, BYTE b, BYTE a)
{
	m_cRed	 = r;
	m_cGreen = g;
	m_cBlue	 = b;
	m_cAlpha = a;
}

void CText::SetFont(char *pFont, int iFontSize, int iFontBold, int iFontItalic)
{
    if (m_pFont)
	{
		m_pFont->Release();
		m_pFont = NULL;
	}
	
	HRESULT hr;

	HDC hDC = GetDC(NULL);
    int nLogPixelsY = GetDeviceCaps(hDC, LOGPIXELSY);
    ReleaseDC(NULL, hDC);

    int iRealSize = -iFontSize * nLogPixelsY / 72;

	hr = D3DXCreateFont( CText::s_pDevice,				// D3D device
                         iRealSize,						// Height
                         0,								// Width
                         (iFontBold?FW_BOLD:FW_NORMAL), // Weight
                         1,								// MipLevels, 0 = autogen mipmaps
                         (iFontItalic?true:false),		// Italic
                         DEFAULT_CHARSET,				// CharSet
                         OUT_DEFAULT_PRECIS,			// OutputPrecision
                         DEFAULT_QUALITY,				// Quality
                         DEFAULT_PITCH | FF_DONTCARE,	// PitchAndFamily
                         pFont,							// pFaceName
                         &m_pFont);						// ppFont

	if (hr != S_OK) return; // Error, do not create Sprite.
    
	m_pFont->PreloadGlyphs(32,180);

	if (!CText::s_pTextSprite) D3DXCreateSprite(CText::s_pDevice, &CText::s_pTextSprite);
}

void CText::StartText(void) // Call before one or more TextOut blocks
{
	if (!CText::s_pTextSprite) return;
	CText::s_pTextSprite->Begin(D3DXSPRITE_ALPHABLEND | D3DXSPRITE_SORT_TEXTURE);
}

void CText::EndText(void) // Call after one or more TextOut blocks
{
	if (!CText::s_pTextSprite) return; 
	CText::s_pTextSprite->End();
}

void CText::TextOut(int x, int y, TEXT_ALIGN_TYPE nAlign, char *pString)
{
    if ((!CText::s_pTextSprite)||(!m_pFont)) return;

	RECT rc; 
    SetRect(&rc, x, y, 0, 0 );

	D3DCOLOR dwColor = D3DCOLOR_ARGB(m_cAlpha, m_cRed, m_cGreen, m_cBlue);

    switch (nAlign)
	{
		case ALIGN_LEFT: break; // align left is standard
	
		case ALIGN_CENTER:
		{
			m_pFont->DrawText(CText::s_pTextSprite, pString, -1, &rc, DT_CALCRECT, dwColor);
			rc.left  = x-((rc.right-x)/2); // only set rc.left. drawing NO_CLIP
			break;
		}

		case ALIGN_RIGHT:
		{
			m_pFont->DrawText(CText::s_pTextSprite, pString, -1, &rc, DT_CALCRECT, dwColor);
			rc.left  = x-(rc.right-x); // only set rc.lect. drawing NO_CLIP
			break;
		}
	}

	m_pFont->DrawText(CText::s_pTextSprite, pString, -1, &rc, DT_NOCLIP, dwColor);
}

A basic text app would look like this

// TextTest.cpp : The main entrypoint for the application.

#include "GlobalHeader.h"

CText g_Text1;			// One text object as a member variable 
CText *g_Text2 = NULL;	// Pointer to create a text object dynamically

void DarkSDK (void)
{
	dbSyncOn();
	dbSyncRate(0);

CText::InitTextOnce(); // Call this once to prepare for text objects
	
	g_Text2 = new CText(); // Create a text object dynamically.

g_Text1.SetFont("Courier New",14,0,1); // Get a fancy font (1)
	g_Text1.SetTextColor(255,10,10,255);   // Color and transparency

g_Text2->SetFont("Arial",24,1,0); // Get a fancy font (2)
	// Note: g_Text2 will remain with standard colors. No SetTextColor here

// loop until the escape key is pressed
	while (LoopSDK())
	{		
		CText::StartText(); // Call this once when starting to write text.
		// <--- No calls to DarkSdk from here on 
		
		// The member object
		g_Text1.TextOut(300,10,ALIGN_RIGHT,"Hello, here I am");
		
		// The dynamic object
		g_Text2->TextOut(100,20,ALIGN_LEFT,"This is me, too");
		
		// No calls to DarkSdk until here --->
		CText::EndText(); // Call this once within rendering loop
			
		if (dbEscapeKey()) break;
		dbSync();
	}

delete(g_Text2); // Don't forget to delete objects created on the fly
}

+ Code Snippet

// TextTest.cpp : The main entrypoint for the application.

#include "GlobalHeader.h"

CText g_Text1;			// One text object as a member variable 
CText *g_Text2 = NULL;	// Pointer to create a text object dynamically

void DarkSDK (void)
{
	dbSyncOn();
	dbSyncRate(0);

	CText::InitTextOnce(); // Call this once to prepare for text objects
	
	g_Text2 = new CText(); // Create a text object dynamically. 

	g_Text1.SetFont("Courier New",14,0,1); // Get a fancy font (1)
	g_Text1.SetTextColor(255,10,10,255);   // Color and transparency

	g_Text2->SetFont("Arial",24,1,0); // Get a fancy font (2)
	// Note: g_Text2 will remain with standard colors. No SetTextColor here

	// loop until the escape key is pressed
	while (LoopSDK())
	{		
		CText::StartText(); // Call this once when starting to write text.
		// <--- No calls to DarkSdk from here on 
		
		// The member object
		g_Text1.TextOut(300,10,ALIGN_RIGHT,"Hello, here I am");
		
		// The dynamic object
		g_Text2->TextOut(100,20,ALIGN_LEFT,"This is me, too");
		
		// No calls to DarkSdk until here --->
		CText::EndText(); // Call this once within rendering loop
			
		if (dbEscapeKey()) break;
		dbSync();
	}

	delete(g_Text2); // Don't forget to delete objects created on the fly
}

Ah, in case you wonder: This is the GlobalHeader.h

+ Code Snippet

#include <stdio.h>
#include <stdlib.h>
#include <io.h>
#include <windows.h>
#include <tchar.h>

#include <D3dx9core.h>

#include "DarkSDK.h"
#include "resource.h"
#include "Text.h"

Curious what you think about that.

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Lampton Worm

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Posted: 14th Oct 2005 17:14

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Thanks for the usage + info

Cheers,

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Lampton Worm

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Posted: 14th Oct 2005 18:06

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Actually, its more than thanks for the usage + info, this it bloomin' useful! Especially the alpha, good work

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miko

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Posted: 1st Nov 2005 13:30

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On a short note: When using fullscreen ("dbSetWindowOff") and directly accessing DX routines (e.g. for text output as shown above), I got resource errors on alt-tab out/in the game. Obviously, this is caused by a lost device and resources that would need a call to OnDeviceLost/OnDeviceReset. I could not figure out how (read: when) to do this, tho.
A workaround would be to *not* use dbSetWindowOff, but create a window with no borders and size of the current desktop. Like here:

+ Code Snippet

// Check for current screen resolution and color.
// Set up DX "fullscreen" with same values
 HDC hDC = ::GetDC(NULL); 
 int iXsize  = GetDeviceCaps(hDC,HORZRES);
 int iYsize  = GetDeviceCaps(hDC,VERTRES);
 int iColors = GetDeviceCaps(hDC,BITSPIXEL);
 ::ReleaseDC(NULL, hDC);

 dbSetDisplayMode(iXsize, iYsize, iColors);

 // Switch to fullscreen. It is not a "real fullscreen DX.
 // Just a window with size of the screen
 // and with no borders. Full DX screen would be clamping fps
 // anyway and give errors on alt-tab

 dbSetWindowLayout(0,0,0);
 dbSetWindowPosition(0,0);

This bounds the "fullscreen" game screen to the current desktop screen resolution, tho.

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Morcilla

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Posted: 2nd Dec 2005 11:50

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Ian,

I'm using your key-stroke handler, I works fine with single-key press but I have problems checking two or more keys simultaneously.

I use it like this for crtl+home:

+ Code Snippet

if( KeyHandler.KeyIsDown(36)==true && KeyHandler.KeyIsDown(17)==true )
	{ //code}

Can you help me with this? Maybe this isn't the best way to use it

Also, is there a way to speed up a lot of checkings (like a switch statement for all keypress)?

Thanks in advance.

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IanM

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Posted: 3rd Dec 2005 13:40

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What problems are you having? That code looks perfectly reasonable to me.

If you find that you are using many if's or select's then you are using the code in the wrong way. You should create a new class derived from the KeyEvent class and register it - that class will be called for each and every keystate change that is made.

For free Plug-ins and source code http://www.matrix1.demon.co.uk

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Morcilla

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Posted: 3rd Dec 2005 17:37

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I guess I need a little "initial" help.
This is my class, but how should I add new methods for any other checks (like crtl+home) or avoiding too many if's? I cannot even imagine right now

+ Code Snippet

class MyKeyEvent : public KeyEvent
{
public:
    bool KeyDown(BYTE VK)
    {        
        return true;
    }
    bool KeyUp(BYTE VK)
    {
        return true;
    }	
};

The code that I posted before:

+ Code Snippet

if( KeyHandler.KeyIsDown(36)==true && KeyHandler.KeyIsDown(17)==true ){ //code}

is in the middle of main code, not inside any class.
And does not seem to work because once a key is down it does not send any more messages until it is up. So both keys should be pressed exactly at the same time.

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IanM

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Posted: 3rd Dec 2005 21:53

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When you use the KeyIsDown function you are not tapping into the event system at all. You are checking the flags directly to see what the key status is. So I really don't know why your code isn't working, unless it is being affected by the surrounding code.

This is untested, but here is an event class that will detect Ctrl-Home for you:

+ Code Snippet

class CtrlHomeEvent : public KeyEvent
{
public:
    CtrlHomeEvent() : ControlPressed(false), HomePressed(false) { }
    bool KeyDown(BYTE VK)
    {
        if (VK == VK_CONTROL)
            ControlPressed = true;
        else if (VK == VK_HOME)
            HomePressed = true;
        if (ControlPressed && HomePressed)
        {
            // Do Something ... run some code, set a flag etc.
        }
        return false;
    }
    bool KeyUp(BYTE VK)
    {
        if (VK == VK_CONTROL)
            ControlPressed = false;
        else if (VK == VK_HOME)
            HomePressed = false;
        return false;
    }
private:
    bool ControlPressed;
    bool HomePressed;
};

Here is a simple class that I use for simple directional control:

+ Code Snippet

#include "KeyEvent.hpp"

class KeyDownEvent : public KeyEventHandler
{
public:
    KeyDownEvent(BYTE KeyValue_)
        : Pressed(false), KeyValue(KeyValue_)
    { }

    virtual bool KeyDown(BYTE VirtualKey)
    {
        if (VirtualKey == KeyValue)
        {
            Pressed = true;
            return true;
        }

        return false;
    }

    virtual bool KeyUp(BYTE VirtualKey)
    {
        if (VirtualKey == KeyValue)
        {
            Pressed = false;
            return true;
        }

        return false;
    }

    bool Hit()
    {
        return Pressed;
    }

private:
    bool Pressed;
    BYTE KeyValue;
};

Which I use like so:

+ Code Snippet

KeyDownEvent LeftKey(VK_LEFT);
KeyDownEvent RightKey(VK_RIGHT);

// ... key detection ...
if (LeftKey.Hit())
    Pos-=4;

if (RightKey.Hit())
    Pos+=4;

I am thinking about a revamp for this code - my DBPro code for keyevents is far more flexible and advanced ATM. If you have any suggestions, let me know.

For free Plug-ins and source code http://www.matrix1.demon.co.uk

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Morcilla

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Posted: 4th Dec 2005 11:14

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All right, thanks a lot Ian.

As a suggestion, I always dreamt about using it like this (pseudocode):

+ Code Snippet

// ... key detection ...
select KeyHit
 case LeftKey.Hit()
      {code}
    
 case RightKey.Hit()
      {code}
 ...

So once the user press "right" you don't have to check "left" and many others.

Also in your simple class used for simple directional control, I assume that the class KeyDownEvent derives from KeyEvent

+ Code Snippet

 code class KeyDownEvent : public KeyEvent

or is it right when I read:

+ Code Snippet

class KeyDownEvent : public KeyEventHandler

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IanM

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Posted: 4th Dec 2005 13:17

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You are right - the code I'm using has evolved a little from what is posted above, and I simply copied&pasted.

It's not possible to get exactly like your pseudocode, but I'll see what I can do.

For free Plug-ins and source code http://www.matrix1.demon.co.uk

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Smithy

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Posted: 12th Dec 2005 18:22 Edited at: 12th Dec 2005 18:31

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//EDIT nevermind

Happy christmas DarkCoders!

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Lampton Worm

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Posted: 18th Dec 2005 19:20

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Hi,

Is there a prefered way to convert int/float/double/longlong etc. to work with AAText? Currently I've got my own function when non char/string converting that type (basically a number, e.g. convert double using _ecvt) to LPSTR and passing that in, might not be the best way, whaddya reckon?

Cheers

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Sephnroth

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Posted: 18th Dec 2005 19:25

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My way is probably not the most effcient or best by any means, but I tend to have one string global that I use for most of my output, say g_szData[512]; or g_szOutput[512];. then i'll just sprintf() any line im about to print into that string and then aatext it out - perfect variable conversion and the added bonus of formatting options

DarkSDK/WinAPI Tutorial

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Lampton Worm

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Posted: 19th Dec 2005 11:55

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Ah yeah, that's one idea. Cheers

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Lampton Worm

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Posted: 1st Jan 2006 16:03

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Hi,

Just something quick - it looks like when you do SetFont, that the second font inherits the first font's bold, italic (and colour) setting?

E.g.

SetFont(1,"Verdana",10,1,0);
SetFont(2,"Courier New",10,0,1);

..then using those font numbers, both come out with italic on, I'd expect only font 2 to have italic - any ideas?

Cheers

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Smithy

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Posted: 6th Jan 2006 09:40 Edited at: 6th Jan 2006 09:59

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@Lampton Worm

I don't know about the code of Sephnroth (Sorry, I had a quick look at the code but didnt found the problem), but it seems when you're using a class like the one provided by "miko" the problem doesnt occur.
(at least for me and my own class based upon the code of the DX SDK Tutorial Sample for Text which is the same code cloggy used for his dll as there are some variables still left that were used by the SDK sample code but not needed anymore in cloggys/Sep's code actually (like g_pFont2 and g_pStatsFont)

)

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Lampton Worm

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Posted: 7th Jan 2006 17:16

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Ah yeah, thanks. It's because Miko's code uses text objects, which thus have true individual properties set up,

Cheers

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Lampton Worm

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Posted: 7th Jan 2006 17:22

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Also, while I'm here - I'm having trouble getting the text to display over sprites that are assigned and created dynamically during my main loop, any thoughts? Sprites end up on top. I experimented with sprite first/last and priority but no joy there..

Cheers

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Smithy

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Posted: 7th Jan 2006 23:10

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Same problem here at the moment, though, I can live with it (aka there is other stuff I have to do before I can have a look at this problem)

Probably its because the text is not handled "inside" the SDK, instead its pure DX code.
( though, I hoped that CORE::dbDrawSpritesFirst/Last would work probably... but it seems this doesnt work either.)

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Lampton Worm

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Posted: 8th Jan 2006 13:52

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Hi,

I don't think DrawText can be given a priority, but someone may know otherwise.

Cheers

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Lampton Worm

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Posted: 8th Jan 2006 15:58

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Hi,

Quick solution to this... call dbDrawSpritesFirst() before your main loop, then don't use dbCLS() in your main loop - use dbSprite() to splat a background down instead (could just be a blank image).

Appears to work a treat for me, I've now got dynamically created sprites with alpha text over the top using Sephnroth's class, cool.

Cheers

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Cloggy

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Posted: 9th Jan 2006 23:31

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I've spent quite a bit of time looking at this, and it seems that you need to turn the backdrop off when using DrawSpritesFirst or the sprites don't even appear!

With DrawSpritesFirst and backdrop off Alpha text prints over the top without a problem.

As Smithy says it's to do with being pure DX code rather than DBPro.

I can't decide the order things are drawn, and this about as good as it gets.

BTW if anyone uses my 3DLine and 3DDot functions, I'll be releasing a new version soon that allows the use of multiple cameras. Although this is for DBP I'll post the source if anyone wants to use it.

Cheers,

Cloggy

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Smithy

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Posted: 10th Jan 2006 10:26

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Lampton Worm:

Quote: "
Sprites end up on top. I experimented with sprite first/last and priority but no joy there..
"

Quote: "
Quick solution to this... call dbDrawSpritesFirst() before your main loop, then don't use dbCLS() in your main loop...
"

Ahh very good, so dbDrawSpriteFirst() will do the job.

Thanks for pointing it out LamptonWorm!

ps: Cloggy, I am sure I will need such code later so it would be appreciated if you could post the snippet after you converted it.

The DARK Force Shall Lead You...
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Cloggy

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Posted: 11th Jan 2006 20:26

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I have just posted the latest version of my d3dfunc dll here http://forum.thegamecreators.com/?m=forum_view&t=69221&b=5&p=0 if anyone wants to convert any of it to work with DarkSDK.

Cheers,

Cloggy

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Morcilla

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Posted: 11th Jan 2006 20:51 Edited at: 11th Jan 2006 20:52

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Great! Thanks a lot Cloggy.

By the way, I'm trying to make the text output by DrawAAText zenabled, so it doesn't appear like a "hud", and get occluded by other objects.

I think it can be done like this at the StartText function:

+ Code Snippet

g_pTextSprite->Begin(D3DXSPRITE_OBJECTSPACE | D3DXSPRITE_BILLBOARD |  D3DXSPRITE_ALPHABLEND | D3DXSPRITE_SORT_DEPTH_BACKTOFRONT );

And then at the DrawAAText function, set any transforms to the device, as if it was transforming a regular 3D object.

However, I'm having some trouble making it work. If anybody can lend a hand, it would be great.

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Morcilla

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Posted: 1st Mar 2006 13:41 Edited at: 9th Mar 2006 17:56

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IanM, seems there is a problem in the key-stroke handler with the "F12" function key, number 123 in my keyboard. Pressing it raises this error:

"Unhandled exception at 0x7c911230 in Project.exe: User breakpoint."

Any idea about what's causing this?

Thanks in advance.

[EDIT]
Seems to be a SDK problem, since it happens to all the programs, so not related with key-stroke handler. Forget it.

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The Back Alley Media

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Joined: 22nd Nov 2005

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Posted: 2nd Mar 2006 19:23

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This is a very interesting thread on extending Dark SDK. I would like to also stick in my 2 cents. I have been interested for a while in creating a .flc loader for the Dark SDK. I am tired of handling discrete frames for my sprite animations. I am familiar with the flic file format.

If anyone could point me in the right direction, I would be much obliged. Loading in the flic data isn't the problem, it is mapping it to a Dark SDK image that I can animate. As I understand it the following has to occur:

Load/Parse the .flc
Render each frame and assign it a dark sdk image number
Play each frame as a dark sdk image

The question I have is how do I take each frame that I render and hook it into a dark sdk image? Is this the most optimized way of doing this or is there a better way?

Anyone done this before?

Tnx

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Mr Squishy

18

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Joined: 25th Feb 2006

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Posted: 3rd Mar 2006 01:39

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miko i went ahead and added the variable length string thingy to your TextOut function, so you can:
int input=1;
g_Text1.TextOut(0,0,ALIGN_LEFT,"input = %d",input);

here is the code if anyone wants it

the header

+ Code Snippet

// Text.h

#pragma once


typedef enum E_TEXT_ALIGN_TYPE
{
	ALIGN_LEFT,
	ALIGN_CENTER,
	ALIGN_RIGHT

 } TEXT_ALIGN_TYPE;

class CText
{
public:
	
	CText(void);
	~CText(void);
	
	static void InitTextOnce();
	void SetFont(char *pFont, int nFontSize, int nFontBold, int nFontItalic);
	void SetTextColor(BYTE r, BYTE g, BYTE b, BYTE a);
	
	static void StartText(void);
	static void EndText(void);
	void TextOut(int x, int y, TEXT_ALIGN_TYPE nAlign, char *pString, ...);

private:

	static IDirect3DDevice9* s_pDevice;
	static ID3DXSprite*		 s_pTextSprite;
	static int               s_iSpriteRefCount;

	BYTE m_cRed;  
	BYTE m_cGreen;
	BYTE m_cBlue;
	BYTE m_cAlpha;
	
	ID3DXFont* m_pFont;	
};

the implementation

// Text.cpp

#include <stdio.h>
#include <stdlib.h>
#include <io.h>
#include <windows.h>
#include <tchar.h>	
#include <string.h>	
#include <stdarg.h>

#include <D3dx9core.h>

#include "DarkSDK.h"
#include "resource.h"
#include "Text.h"

IDirect3DDevice9* CText::s_pDevice     = NULL;
ID3DXSprite*	  CText::s_pTextSprite = NULL;
int               CText::s_iSpriteRefCount = 0;

CText::CText(void) // Constructor
{
	m_pFont       = NULL;
	
	m_cRed		= 0xff; // Standard color/alpha values
	m_cGreen	= 0xff;
	m_cBlue		= 0xff;
	m_cAlpha	= 0xff;

CText::s_iSpriteRefCount++;
}

CText::~CText(void) // Destructor
{
	if (m_pFont) { m_pFont->Release(); m_pFont = NULL; }

CText::s_iSpriteRefCount--;
	if (s_iSpriteRefCount>0) return;
	
	if (s_pTextSprite) { s_pTextSprite->Release(); s_pTextSprite = NULL; }
}

void CText::InitTextOnce() // Call once, to receive the Device pointer
{
	CText::s_pDevice = dbGetDirect3DDevice();
}

void CText::SetTextColor(BYTE r, BYTE g, BYTE b, BYTE a)
{
	m_cRed	 = r;
	m_cGreen = g;
	m_cBlue	 = b;
	m_cAlpha = a;
}

void CText::SetFont(char *pFont, int iFontSize, int iFontBold, int iFontItalic)
{
    if (m_pFont)
	{
		m_pFont->Release();
		m_pFont = NULL;
	}
	
	HRESULT hr;

HDC hDC = GetDC(NULL);
    int nLogPixelsY = GetDeviceCaps(hDC, LOGPIXELSY);
    ReleaseDC(NULL, hDC);

int iRealSize = -iFontSize * nLogPixelsY / 72;

hr = D3DXCreateFont( CText::s_pDevice,				// D3D device
                         iRealSize,						// Height
                         0,								// Width
                         (iFontBold?FW_BOLD:FW_NORMAL), // Weight
                         1,								// MipLevels, 0 = autogen mipmaps
                         (iFontItalic?true:false),		// Italic
                         DEFAULT_CHARSET,				// CharSet
                         OUT_DEFAULT_PRECIS,			// OutputPrecision
                         DEFAULT_QUALITY,				// Quality
                         DEFAULT_PITCH | FF_DONTCARE,	// PitchAndFamily
                         pFont,							// pFaceName
                         &m_pFont);						// ppFont

if (hr != S_OK) return; // Error, do not create Sprite.
    
	m_pFont->PreloadGlyphs(32,180);

if (!CText::s_pTextSprite) D3DXCreateSprite(CText::s_pDevice, &CText::s_pTextSprite);
}

void CText::StartText(void) // Call before one or more TextOut blocks
{
	if (!CText::s_pTextSprite) return;
	CText::s_pTextSprite->Begin(D3DXSPRITE_ALPHABLEND | D3DXSPRITE_SORT_TEXTURE);
}

void CText::EndText(void) // Call after one or more TextOut blocks
{
	if (!CText::s_pTextSprite) return; 
	CText::s_pTextSprite->End();
}

void CText::TextOut(int x, int y, TEXT_ALIGN_TYPE nAlign, char *pString, ...)
{
    if ((!CText::s_pTextSprite)||(!m_pFont)) return;

char		strText[256];
	va_list		argumentPtr;

va_start(argumentPtr, pString);
	vsprintf(strText, pString, argumentPtr);	
	va_end(argumentPtr);

RECT rc; 
    SetRect(&rc, x, y, 0, 0 );

D3DCOLOR dwColor = D3DCOLOR_ARGB(m_cAlpha, m_cRed, m_cGreen, m_cBlue);

switch (nAlign)
	{
		case ALIGN_LEFT: break; // align left is standard
	
		case ALIGN_CENTER:
		{
			m_pFont->DrawText(CText::s_pTextSprite, strText, -1, &rc, DT_CALCRECT, dwColor);
			rc.left  = x-((rc.right-x)/2); // only set rc.left. drawing NO_CLIP
			break;
		}

case ALIGN_RIGHT:
		{
			m_pFont->DrawText(CText::s_pTextSprite, strText, -1, &rc, DT_CALCRECT, dwColor);
			rc.left  = x-(rc.right-x); // only set rc.lect. drawing NO_CLIP
			break;
		}
	}

m_pFont->DrawText(CText::s_pTextSprite, strText, -1, &rc, DT_NOCLIP, dwColor);
}

+ Code Snippet

// Text.cpp

#include <stdio.h>
#include <stdlib.h>
#include <io.h>
#include <windows.h>
#include <tchar.h>	
#include <string.h>	
#include <stdarg.h>	

#include <D3dx9core.h>

#include "DarkSDK.h"
#include "resource.h"
#include "Text.h"

IDirect3DDevice9* CText::s_pDevice     = NULL;
ID3DXSprite*	  CText::s_pTextSprite = NULL;
int               CText::s_iSpriteRefCount = 0;

CText::CText(void) // Constructor
{
	m_pFont       = NULL;
	
	m_cRed		= 0xff; // Standard color/alpha values
	m_cGreen	= 0xff;
	m_cBlue		= 0xff;
	m_cAlpha	= 0xff;

	CText::s_iSpriteRefCount++;
}

CText::~CText(void) // Destructor
{
	if (m_pFont) { m_pFont->Release(); m_pFont = NULL; }

	CText::s_iSpriteRefCount--;
	if (s_iSpriteRefCount>0) return;
	
	if (s_pTextSprite) { s_pTextSprite->Release(); s_pTextSprite = NULL; }
}

void CText::InitTextOnce() // Call once, to receive the Device pointer
{
	CText::s_pDevice = dbGetDirect3DDevice();
}

void CText::SetTextColor(BYTE r, BYTE g, BYTE b, BYTE a)
{
	m_cRed	 = r;
	m_cGreen = g;
	m_cBlue	 = b;
	m_cAlpha = a;
}

void CText::SetFont(char *pFont, int iFontSize, int iFontBold, int iFontItalic)
{
    if (m_pFont)
	{
		m_pFont->Release();
		m_pFont = NULL;
	}
	
	HRESULT hr;

	HDC hDC = GetDC(NULL);
    int nLogPixelsY = GetDeviceCaps(hDC, LOGPIXELSY);
    ReleaseDC(NULL, hDC);

    int iRealSize = -iFontSize * nLogPixelsY / 72;

	hr = D3DXCreateFont( CText::s_pDevice,				// D3D device
                         iRealSize,						// Height
                         0,								// Width
                         (iFontBold?FW_BOLD:FW_NORMAL), // Weight
                         1,								// MipLevels, 0 = autogen mipmaps
                         (iFontItalic?true:false),		// Italic
                         DEFAULT_CHARSET,				// CharSet
                         OUT_DEFAULT_PRECIS,			// OutputPrecision
                         DEFAULT_QUALITY,				// Quality
                         DEFAULT_PITCH | FF_DONTCARE,	// PitchAndFamily
                         pFont,							// pFaceName
                         &m_pFont);						// ppFont

	if (hr != S_OK) return; // Error, do not create Sprite.
    
	m_pFont->PreloadGlyphs(32,180);

	if (!CText::s_pTextSprite) D3DXCreateSprite(CText::s_pDevice, &CText::s_pTextSprite);
}

void CText::StartText(void) // Call before one or more TextOut blocks
{
	if (!CText::s_pTextSprite) return;
	CText::s_pTextSprite->Begin(D3DXSPRITE_ALPHABLEND | D3DXSPRITE_SORT_TEXTURE);
}

void CText::EndText(void) // Call after one or more TextOut blocks
{
	if (!CText::s_pTextSprite) return; 
	CText::s_pTextSprite->End();
}

void CText::TextOut(int x, int y, TEXT_ALIGN_TYPE nAlign, char *pString, ...)
{
    if ((!CText::s_pTextSprite)||(!m_pFont)) return;

	char		strText[256];
	va_list		argumentPtr;

	va_start(argumentPtr, pString);
	vsprintf(strText, pString, argumentPtr);	
	va_end(argumentPtr);

	RECT rc; 
    SetRect(&rc, x, y, 0, 0 );

	D3DCOLOR dwColor = D3DCOLOR_ARGB(m_cAlpha, m_cRed, m_cGreen, m_cBlue);

    switch (nAlign)
	{
		case ALIGN_LEFT: break; // align left is standard
	
		case ALIGN_CENTER:
		{
			m_pFont->DrawText(CText::s_pTextSprite, strText, -1, &rc, DT_CALCRECT, dwColor);
			rc.left  = x-((rc.right-x)/2); // only set rc.left. drawing NO_CLIP
			break;
		}

		case ALIGN_RIGHT:
		{
			m_pFont->DrawText(CText::s_pTextSprite, strText, -1, &rc, DT_CALCRECT, dwColor);
			rc.left  = x-(rc.right-x); // only set rc.lect. drawing NO_CLIP
			break;
		}
	}

	m_pFont->DrawText(CText::s_pTextSprite, strText, -1, &rc, DT_NOCLIP, dwColor);
}

Some days the cascading moments which constitute my experience dissolve to reveal a sense of clarity which transcends reasoning.
And then there are days like today.

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Dark GDK / Text extension, Image extension, Primitives Extension