Moving through the invisible

[Gwiber]

I was confronted with a situation where a rogue in the party was trying to pursue a enemy cleric.

At the start of his round. he started to move, and was immediately running into an invisible Choral Angel that was guarding the Cleric (evil party here).

Mechanically seeking I was expecting to force him to stop right there because he had no way of knowing the Angel was there until it appeared and stopped him.

The player was clearly annoyed by the situation. and said he should get the rest of his movement, which I allowed with a penalty of the movement he tried. plus backing up, then he could take the rest of his move.

Is there a rule concerning this I missed? Should I have stopped him in place? Or did I do right in letting him continue moving?

[wraithstrike]

You can't move through an enemy square without an acrobatics check, but since the angel was invisible the rules don't cover how to handle this.
The angel should have remained invisible though. I would have let him know he bumped into a creature and then given him a chance to acrobatics past it.

[Gwiber]

The Angel was definitely going to attack the Rogue, to try and stop him from going after the cleric he was defending.

You may have been right, maybe I should have gone to an Acrobatics check.

[toportime]

Why not a Bullrush attempt? Maybe give the Angel the miss chance due to being invisible.

I think it would make sense to do that because he has the momentum due to intending to move beyond where he meets resistance.. and of course it would provoke an AoO because he is not aware of the Angel.

I could see that or the Acrobatics check... but I would give the Angel a free AoO regardless for the simple fact the Angel has the element of surprise.te the name of this action, you don't actually have to leave combat entirely.

Restricted Withdraw: If you are limited to taking only a standard action each round you can withdraw as a standard action. In this case, you may move up to your speed.

[toportime]

Why not a Bullrush attempt? Maybe give the Angel the miss chance due to being invisible.

I think it would make sense to do that because he has the momentum due to intending to move beyond where he meets resistance.. and of course it would provoke an AoO because he is not aware of the Angel.

I could see that or the Acrobatics check... but I would give the Angel a free AoO regardless for the simple fact the Angel has the element of surprise.

[Derklord]

I'd go for the existing rules for moving through an opponent's square: Overrun.

The invisible creature has to options: Let the enemy pass (in order to stay undetected), or try to stop the enemy. If it goes for the latter, the enemy has to make an overrun maneuver to continue it's movement.

[Carson Jarroc]

If the angel wants to let the rogue by, I'd just say the rogue follows. If the angel is attempting to block passage, the angel gets attacks of opportunity, or held actions, if applicable. No chance for acrobatics unless the rogue somehow knew there was an invisible opponent.

[Gauss]

Holy Deja Vu Batman! Didn't this exact topic come up less than 2 months ago?

[CampinCarl9127]

It's a bit of a hairy situation, the rules don't cover it exactly. When this comes up I always ask the following questions.

1) Who is aware of who?
2) For the people that are aware, what is their intentions?

To me it seems the angel was aware of the rogue, but the rogue was not aware of the angel. It also seems that the angel would want to stop the rogue. In this case, the angel would probably take an AoO or do some form of combat maneuver to stop the rogue. That would interrupt movement, and once the attack resolved the rogue can choose what to do with the rest of his movement.

So interrupt his movement once the angel breaks invisibility and he runs into it, then let him decide what he wants to do from there. Easily handled.