
Whale_Cancer |

Alright, simple question here. Came up during game yesterday. Any help appreciated.
How do you handle an invisible character moving through their equally invisible ally's square?
Normally, you can move through your ally's square without a problem because they let you through. But if your ally is unaware of you, what happens?
After some disagreement, it was ruled that there was a 50% chance that such characters bump into each other. They didn't, so we didn't even consider what bumping into each other would entail.
About 30 minutes of google-fu found nothing. A RAW answer would be great (but I believe impossible), so any RAI interpretations or how you would handle this situation (and why) would be great.
Cheers!

Stynkk |

While you can add a % chance to bump into your ally, the RAW is simply you can move through an ally's square without penalty - regardless of visibility.
You could also treat it as a square with an obstacle in it:
Obstacles: Like difficult terrain, obstacles can hamper movement. If an obstacle hampers movement but doesn't completely block it, each obstructed square or obstacle between squares counts as 2 squares of movement. You must pay this cost to cross the obstacle, in addition to the cost to move into the square on the other side. If you don't have sufficient movement to cross the obstacle and move into the square on the other side, you can't cross it. Some obstacles may also require a skill check to cross.
The obstacle simulates the extra care needed to avoid the ally.

Stynkk |

I believe that moving through an allys space cost 2 movement..
This is not the case...
Moving Through a Square
You can move through an unoccupied square without difficulty in most circumstances. Difficult terrain and a number of spell effects might hamper your movement through open spaces.
Friend: You can move through a square occupied by a friendly character, unless you are charging. When you move through a square occupied by a friendly character, that character doesn't provide you with cover.

Karlgamer |

Moving Through a Square
You can move through an unoccupied square without difficulty in most circumstances. Difficult terrain and a number of spell effects might hamper your movement through open spaces.Friend: You can move through a square occupied by a friendly character, unless you are charging. When you move through a square occupied by a friendly character, that character doesn't provide you with cover.
Okay, I would say it counts a 2 movement. they bump into each other say excuse me and move on

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Alright, simple question here. Came up during game yesterday. Any help appreciated.
How do you handle an invisible character moving through their equally invisible ally's square?
I think you handled it fairly.
I should have said 50% to go through without difficulty and 50% with difficulty (move cost x2)

Whale_Cancer |

While you can add a % chance to bump into your ally, the RAW is simply you can move through an ally's square without penalty - regardless of visibility.
You could also treat it as a square with an obstacle in it:
PRD - Combat - Movement wrote:Obstacles: Like difficult terrain, obstacles can hamper movement. If an obstacle hampers movement but doesn't completely block it, each obstructed square or obstacle between squares counts as 2 squares of movement. You must pay this cost to cross the obstacle, in addition to the cost to move into the square on the other side. If you don't have sufficient movement to cross the obstacle and move into the square on the other side, you can't cross it. Some obstacles may also require a skill check to cross.The obstacle simulates the extra care needed to avoid the ally.
Oh yeah, you are totally right! RAW would mean no bump chance, I guess my simulationist impulse made me overlook that. I'll inform my DM of your suggestions re: obstacles. I think that might be a good rule in the case of a 'bump'; if you pass through the same 5 ft square as another person without noticing them or touching them, I can't see why it would be difficult terrain. Thanks!

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You are in the middle of a fight or dangerous dungeon where you and your ally have weapons out and ready...and you dont expect to get stabbed when you sneak up on your friend? Either they are giving signals somehow, using telepathy, or are leaving themselves open if an invisible monster is near. How probably isn't important, but they should go over their plan better so it makes sense and they stick together.

Whale_Cancer |

You are in the middle of a fight or dangerous dungeon where you and your ally have weapons out and ready...and you dont expect to get stabbed when you sneak up on your friend? Either they are giving signals somehow, using telepathy, or are leaving themselves open if an invisible monster is near. How probably isn't important, but they should go over their plan better so it makes sense and they stick together.
The situation is two characters, travelling companions, and a third enter a ruined building in stealth mode. We know there are werewolves around. Find an NPC who is armed in an unlocked room. Third character begins talking to the NPC in a normal voice and carrying on a conversation. I invisible myself and then my travelling companion as I'm worried about werewolves attacking (due to giving away our stealth with normal conversation) and the possibility that this NPC we just encountered is on the enemy's side.
NPC and third PC leave the building. Werewolves come out of hiding spots and scent me and my companion. We withdraw while invisible and I have to cross his square at one point. We had no reason to suspect invisible foes.
And yeah, we are working on a system for coordinating while invisible; this was our first session with these characters (any thoughts?). Right now we just speak elven in emergencies and then move.

Stynkk |

And yeah, we are working on a system for coordinating while invisible; this was our first session with these characters (any thoughts?). Right now we just speak elven in emergencies and then move.
Use your Knowledge: Nature to simulate various bird calls?
Hold an invisible rope between your two invisible characters?Perception & Survival check for the tracks they might be leaving behind?
See Invisibility?
:)