bool LoadSprite(LPDIRECTDRAWSURFACE7& rpDDSImage, LPDIRECTDRAWSURFACE7& rpDDSSprite,
int nSpriteWidth, int nSpriteHeight, int nSpriteX, int nSpriteY)
{
// Struktur vorbereiten
DDSURFACEDESC2 ddsd;
memset(&ddsd, 0, sizeof(ddsd));
ddsd.dwWidth = sizeof(ddsd);
// Image locken
if(rpDDSImage->Lock(NULL, &ddsd, DDLOCK_WAIT | DDLOCK_SURFACEMEMORYPTR, NULL))
return(false);
int nImageWidth = (int)ddsd.dwWidth;
int nImageHeight = (int)ddsd.dwHeight;
int nImagePitch = (int)ddsd.lPitch;
int nStartX = nSpriteX*nSpriteWidth;
int nStartY = nSpriteY*nSpriteHeight;
BYTE* pbyImage = (BYTE*)ddsd.lpSurface;
// Bild ist groß genug?
if(nSpriteWidth*nSpriteX > nImageWidth || nSpriteHeight*nSpriteY > nImageHeight)
{
rpDDSImage->Unlock(NULL);
return(false);
}
// Speicher für das Sprite bereitstellen
BYTE* pbyTemp = new BYTE[nSpriteWidth*nSpriteHeight];
for(int nY=nStartY;nY<nSpriteHeight+nStartY; nY++)
{
for(int nX=nStartX;nX<nSpriteWidth+nStartX;nX++)
{
pbyTemp[nX + (nY * nSpriteWidth)] = pbyImage[nX + (nY * nImagePitch)];
}
}
// Image freigeben
if(rpDDSImage->Unlock(NULL))
return(false);
// Struktur vorbereiten
memset(&ddsd, 0, sizeof(ddsd));
ddsd.dwSize = sizeof(ddsd);
// Sprite Surface locken
if(rpDDSSprite->Lock(NULL, &ddsd, DDLOCK_WAIT |DDLOCK_SURFACEMEMORYPTR, NULL))
return(false);
int nSpritePitch = (int)ddsd.lPitch;
BYTE* pbySprite = (BYTE*)ddsd.lpSurface;
// Daten umkopieren
for(int nY=0;nY<nSpriteHeight; nY++)
{
for(int nX=0;nX<nSpriteWidth;nX++)
{
pbySprite[nX + (nY * nSpritePitch)] = pbyTemp[nX + (nY * nSpriteWidth)];
}
}
// Surface freigeben
if(rpDDSSprite->Unlock(NULL))
return(false);
// Speicher freigeben
delete pbyTemp;
pbyTemp =NULL;
return(true);
}Sprite Loader SOLVED
Author
Hi all,
I made a function that loads a Part of a Surface and stores it in a new Surface.
But it don't work. The new created Surface is always full of black and some white pixels.
NOTE: I use 8BPP Mode
Please help, otherwise my project will never finish [tears]
[Edited by - m4ster on January 14, 2007 12:42:07 PM]
This doesn't realy answer your question - But why don't you lock both surfaces and just copy directly between them? You should be able to copy a row at a time (width_of_the_sprite bytes) too, which would save you the inner loop.
Author
I don't lock both surfaces the same time, because I don't like it. I tryed to make clean and easy code and in my opinion locking 2 surfaces the same time seems to be too complex. [lol]
Author
Hey,
I found the mistake by myself.
It's pretty easy and very very very stupid [lol].
[Edited by - m4ster on January 14, 2007 12:24:27 PM]
I found the mistake by myself.
It's pretty easy and very very very stupid [lol].
// Struktur vorbereitenDDSURFACEDESC2 ddsd;memset(&ddsd, 0, sizeof(ddsd));ddsd.dwWidth = sizeof(ddsd);// Has to be: ddsd.dwSize[Edited by - m4ster on January 14, 2007 12:24:27 PM]
This topic is closed to new replies.
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