new Check1;

public OnPlayerSpawn(playerid){
Check1 = SetPlayerCheckpoint(playerid, -1671.22, 685.87, 30.60, 4);
return 1;
}

public OnPlayerEnterCheckpoint(playerid) {
if (Check1){ // Si le joueur est dans le CheckPoint définis :
SendClientMessage(playerid,0xFFFF00AA, "> CheckPoint atteint.");
}
return 1;
}