Door flags.
| Name | Value | Description |
|---|---|---|
| SF_DOOR_ROTATE_Y | 0 | |
| SF_DOOR_START_OPEN | 1 | |
| SF_DOOR_ROTATE_BACKWARDS | 2 | |
| SF_DOOR_PASSABLE | 8 | |
| SF_DOOR_ONEWAY | 16 | |
| SF_DOOR_NO_AUTO_RETURN | 32 | |
| SF_DOOR_ROTATE_Z | 64 | |
| SF_DOOR_ROTATE_X | 128 | |
| SF_DOOR_USE_ONLY | 256 | door must be opened by player's use button. |
| SF_DOOR_NOMONSTERS | 512 | Monster can't open |
| SF_DOOR_SILENT | -2147483648 | |
| SF_DOOR_NO_LINK_CHECKING | 1024 | Don't make sure the doors are in-sync. |