Quote:

But isnn't that restrictive ? Anyway this is only if you use 3dgs's physics engine. Is there any such restricion if you use Newton ?





There is no limit on Newton. Newton is a 3rd party plugin and thus, has nothing to do with A6's physics engine. This is not a restrictive thing (1 physcis object). You can have multiple objects with physcis, but only one can be active at any time. So you could have a door that uses physics, and a barrel that also uses them. When the player is close to the door, the door's physics are enabled. When the player is further away from the door, its physics are turned off. When the player gets close to the barrel, the barrel's physics are turned on and then when the player is out of sight, the physics are turned off.