Function path_solid_pieces

Source/path.cpp:147–165

* @brief check if stepping from pPath to (dx,dy) cuts a corner. * * If you step from A to B, both Xs need to be clear: * * AX * XB * * @return true if step is allowed */

 *  @return true if step is allowed
 */
BOOL path_solid_pieces(PATHNODE *pPath, int dx, int dy)
{
	BOOL rv = TRUE;
	switch (path_directions[3 * (dy - pPath->y) + 3 - pPath->x + 1 + dx]) {
	case 5:
		rv = !nSolidTable[dPiece[dx][dy + 1]] && !nSolidTable[dPiece[dx + 1][dy]];
		break;
	case 6:
		rv = !nSolidTable[dPiece[dx][dy + 1]] && !nSolidTable[dPiece[dx - 1][dy]];
		break;
	case 7:
		rv = !nSolidTable[dPiece[dx][dy - 1]] && !nSolidTable[dPiece[dx - 1][dy]];
		break;
	case 8:
		rv = !nSolidTable[dPiece[dx + 1][dy]] && !nSolidTable[dPiece[dx][dy - 1]];
		break;
	}
	return rv;
}

/**
 * @brief perform a single step of A* bread-first search by trying to step in every possible direction from pPath with goal (x,y). Check each step with PosOk