Returns 1 if a player with the specified ID number exists, 0 otherwise. This ID number is obtained using the "ID" trigger (see ID). Do not confuse PlayerID with TargetID.
Format: PlayerIDExist(ID_number)
Arguments:
Return type: boolean (1 if true or 0 if false)
Error conditions: Returns 'Bottom' if exprn evaluates to 'Bottom'.
Example:
trigger1 = PlayerIDExist(var(4))
; Triggers if a player with an ID number equal to the value of var(4) exists.