hello somthing out of the manual
IGNORE_YOU Ignores the you entity on collision detection.
IGNORE_PASSABLE Ignores all passable blocks and entities, including all water entities.
IGNORE_PASSENTS Ignores passable model and sprite entities, but still detects water entities (rectangular passable maps, or passable terrain). It sets the predefined flags in_passable and on_passable . The predefined passable_ent pointer is set to the detected water entity. This can be used, for example, to switch the player behavior to swimming.
IGNORE_MAPS Ignores all map and terrain entities.
IGNORE_MODELS Ignores all models.
IGNORE_SPRITES Ignores all sprites.
IGNORE_PUSH Ignores all entities with lower push values than the me entity.
IGNORE_CONTENT Ignores the content of the move origin. The function is faster, but water entities (see above) are not detected.
ore use my.passable = on;