[Serbish]

This callback will help you.

https://sampwiki.blast.hk/wiki/OnPlayerInteriorChange

Also, when the callback is called you should freeze the player with

pawn Код:

TogglePlayerControllable(playerid, 0);

and put a timer to unfreeze

pawn Код:

TogglePlayerControllable(playerid, 1);

the player.

EDIT: Help for timers:

https://sampwiki.blast.hk/wiki/SetTimer