#953 Walls should block, stairs should elevate

[Elias Hinrichsen]

Make the character in 3D view stop at walls and other obstacles. Also, when approaching a stairway, go upwards along it into the next level, don't walk through it.

[Emmanuel Puybaret]

Stopping at walls would make it very difficult to go room to room, because the would be obliged to use wide open doors.
Going upwards along stairway could be interesting but complicated to program.

[Elias Hinrichsen]

Just make it optional.