Message #434545

[Lys Sanglepied(ushoran)]

C'est la même que la mienne presque ! Pour moi la base vient de là :

Glossary

A creature can generally notice the presence of an active invisible creature within 30 feet with a DC 20 Perception check. The observer gains a hunch that “something's there” but can't see it or target it accurately with an attack. It's practically impossible (+20 DC) to pinpoint an invisible creature's location with a Perception check. Even once a character has pinpointed the square that contains an invisible creature, the creature still benefits from total concealment (50% miss chance). There are a number of modifiers that can be applied to this DC if the invisible creature is moving or engaged in a noisy activity.

Invisible creature is...   Perception
In combat or speaking   –20
Moving at half speed   –5
Moving at full speed   –10
Running or charging   –20
Not moving   +20
Using Stealth   Stealth check +20
Some distance away   +1 per 10 feet
Behind an obstacle (door)   +5
Behind an obstacle (stone wall)   +15