Function CelBlitWidth

Source/engine.cpp:495–524

* @brief Blit to a buffer at given coordinates * @param pBuff Target buffer * @param x Cordinate in pBuff buffer * @param y Cordinate in pBuff buffer * @param wdt Width of pBuff * @param pCelBuff Cel data * @param nCel CEL frame number * @param nWidth Width of cel */

 * @param nWidth Width of cel
 */
void CelBlitWidth(BYTE *pBuff, int x, int y, int wdt, BYTE *pCelBuff, int nCel, int nWidth)
{
	BYTE *pRLEBytes, *dst, *end;

	assert(pCelBuff != NULL);
	assert(pBuff != NULL);

	int i, nDataSize;
	BYTE width;

	pRLEBytes = CelGetFrame(pCelBuff, nCel, &nDataSize);
	end = &pRLEBytes[nDataSize];
	dst = &pBuff[y * wdt + x];

	for (; pRLEBytes != end; dst -= wdt + nWidth) {
		for (i = nWidth; i;) {
			width = *pRLEBytes++;
			if (!(width & 0x80)) {
				i -= width;
				memcpy(dst, pRLEBytes, width);
				dst += width;
				pRLEBytes += width;
			} else {
				width = -(char)width;
				dst += width;
				i -= width;
			}
		}
	}
}

/**
 * @brief Blit a solid colder shape one pixel larger then the given sprite shape, to the back buffer at the given coordianates