查看“Non possum vivi”的源代码

{{Languages|zh|欲生不能}}
'''''Non possum vivi''''' (Latin for "(I) can't live") or '''Wrong ball''' is a softlock where the player is unable to make progress due to having the wrong ball material with no way to [[transformer|change the ball]]. ''Non possum vivi'' can only be resolved by restarting the level; a [[suicider]] cannot solve the problem, since dying does not change the ball. ''Non possum vivi'' is a serious flaw in the design of [[mapping]] (even worse than ''Non possum mori''), but can generally be easily avoided by the map maker's careful inspection of the map logic.

''Non possum vivi'' appears in both [[original level]]s and [[custom level]]s.

== Examples from original level ==

* In level 4, section 2, it is possible to [[gheto]] the last wooden transformer with a stone ball. However, the stone ball is unable to climb up the steep slope, and one would get into a ''non possum vivi''.
* For level 13, section 4, if one enters with a stone ball, or changes into a stone ball at the end of the section and then dies, one would be stuck in a ''non possum vivi'', as a paper ball is required to complete this section.

== See also ==

* Another type of softlock: [[Non possum mori]]