bool DrawTiles(){	int x, y, i;	RECT rcDest;	BYTE byTile;	// Tile location of the upper left corner of the screen	int xStart = mapData.xScreen / 44; // xScreen is the pixel coordinate for movement	int yStart = mapData.yScreen / 44; // yScreen is the pixel coordinate for movement	// Set the RECT of the first tile to be drawn	rcDest.left = xStart * 44 - mapData.xScreen;	rcDest.top = yStart * 44 - mapData.yScreen;	rcDest.right = rcDest.left + 44;	rcDest.bottom = rcDest.top + 44;	RECT rcTemp = rcDest; // Will need a backup!	for(x=0; x<30; x++)	{		// if we are on an odd row, i will be TRUE		i = (x+2)%2;				// increment the RECT for the next tile		rcDest.top += 22;		rcDest.bottom += 22;		rcDest.left = rcTemp.left;		rcDest.right = rcTemp.right;		if(i)		{			// offset the RECT and tile coord for an odd row			yStart += 1;			rcDest.left -= 22;			rcDest.right -= 22;		}		else		{			// on an even row, increment the coord down 1 full tile			if(x > 0)				xStart += 1;		}		for(y=0; y<18; y++)		{			// current tile coords being drawn			xCurr = xStart + y;			yCurr = yStart - y;						// increment the bounding RECT			rcDest.left += 44;			rcDest.right += 44;			// make sure we arent drawing past the map limits			if(xCurr >= 0 && xCurr <= mapData.xMax && yCurr >= 0 && yCurr <= mapData.yMax)			{				// this is just a makeshift linked list for testing, it works for now				i = mapLoc[xCurr][yCurr].nNumTiles-1;				byTile = mapLoc[xCurr][yCurr].tileData[i].byTile;				// if there is a tile in that spot, BLT it!!				if(byTile > 0)						g_pDDSBack->Blt(&rcDest, mapData.pDDSTileset, &lptileInfo[byTile]->rcLocation, DDBLT_WAIT | DDBLT_KEYSRC, NULL);			}		}	}	return true;}