Can a rogue use cover or concealment in order to Hide, and thereafter make sneak attacks against enemies he is hidden from?
- A rogue sneak attacks an ogre in melee, then runs behind a wall and hides. Having successfully hidden, the rogue runs out the next round and attacks the ogre again. Can he make Sneak Attack?
- The party is walking through the woods when one is hit by a rogue sniper, who remains hidden. The sniper deals sneak attack damage. The party is now aware of the sniper, but all fail their Spot checks and can't see him. Do the rogue's subsequent attacks deal sneak attack damage?
Edit: Rules-as-written, does hiding due to concealment, total concealment or cover explicitly allow you to make sneak attacks? Invisibility or a blinded opponent specifically do, but is there a rule somewhere that you lose Dexterity to AC against opponents who are merely hidden?