Function DrawObject

Source/scrollrt.cpp:458–505

* @brief Render an object sprite * @param x dPiece coordinate * @param y dPiece coordinate * @param ox Back buffer coordinate * @param oy Back buffer coordinate * @param pre Is the sprite in the background */

 * @param pre Is the sprite in the background
 */
static void DrawObject(int x, int y, int ox, int oy, BOOL pre)
{
	int sx, sy, xx, yy, nCel, frames;
	char bv;
	BYTE *pCelBuff;

	if (dObject[x][y] == 0 || light_table_index >= lightmax)
		return;

	if (dObject[x][y] > 0) {
		bv = dObject[x][y] - 1;
		if (object[bv]._oPreFlag != pre)
			return;
		sx = ox - object[bv]._oAnimWidth2;
		sy = oy;
	} else {
		bv = -(dObject[x][y] + 1);
		if (object[bv]._oPreFlag != pre)
			return;
		xx = object[bv]._ox - x;
		yy = object[bv]._oy - y;
		sx = (xx << 5) + ox - object[bv]._oAnimWidth2 - (yy << 5);
		sy = oy + (yy << 4) + (xx << 4);
	}

	assert((unsigned char)bv < MAXOBJECTS);

	pCelBuff = object[bv]._oAnimData;
	if (!pCelBuff) {
		// app_fatal("Draw Object type %d: NULL Cel Buffer", object[bv]._otype);
		return;
	}

	nCel = object[bv]._oAnimFrame;
	frames = SDL_SwapLE32(*(DWORD *)pCelBuff);
	if (nCel < 1 || frames > 50 || nCel > (int)frames) {
		// app_fatal("Draw Object: frame %d of %d, object type==%d", nCel, frames, object[bv]._otype);
		return;
	}

	if (bv == pcursobj)
		CelBlitOutline(194, sx, sy, object[bv]._oAnimData, object[bv]._oAnimFrame, object[bv]._oAnimWidth);
	if (object[bv]._oLight) {
		CelClippedDrawLight(sx, sy, object[bv]._oAnimData, object[bv]._oAnimFrame, object[bv]._oAnimWidth);
	} else {
		CelClippedDraw(sx, sy, object[bv]._oAnimData, object[bv]._oAnimFrame, object[bv]._oAnimWidth);
	}
}

static void scrollrt_draw_dungeon(int sx, int sy, int dx, int dy, int eflag);