UPDATE: the WGA script (confirmed as legit on Reddit) does confirm that he is tortured - by his past, presumably - but looks at Rey kindly. Yet his looks says he knows why she came and that she's about to offer him the lightsaber, to call him back to action:
Standing forty feet away from her, his back to us, is a MAN, in a
CLOAK AND ROBE.
Rey stares, knowing exactly who it is. But she just
stares for what seems like forever. Until he finally TURNS, SLOWLY, to
her. Pulls back his hood.
IT IS LUKE SKYWALKER.
Older now, white hair,
bearded. He looks at Rey.
A kindness in his eyes, but there's
something tortured, too.
He doesn't need to ask her who she is, or what she is doing here. His look says it all.
In response, Rey pulls something from the pack.
And she holds it out to him. An offer. A plea. The galaxy's only hope.
The Foster novelization does NOT offer much evidence. Just that he's generally haunted, and doesn't talk first.
She halted abruptly. There was—something. She turned sharply.
Some distance from her, at the periphery of the forest, stood a figure shrouded in a simple cloak and robe. It did not matter that it was facing away from her. She knew instantly who it was. Yet all she could do was stare in silence.
Whether motivated by her stare or by something unknown, the figure finally turned toward her and pulled back his hood.
His hair and beard were white, and his countenance was haunted. He did not speak, nor did she.
Remembering, Rey reached into her pack and removed his lightsaber. Taking several steps forward, she held it out to him. An offer. A plea. The galaxy’s only hope.
She wondered what would happen next.
END OF BOOK :)
Perhaps you can interpret his silence as not being happy to be found.
Frankly, if I ran away and hid heck-knows-where for a (to me) good reason, I'm sure I'd be unhappy if some overly-enthusiastic teenager found me too.