[Nero_3D]

At first lets define some checkpoints

pawn Код:

enum {
    CP_SPAWN,
    CP_COMMAND
}

Than we create our own SetPlayerCheckpoint function with ids

pawn Код:

stock SetPlayerCheckpointEx(playerid, checkpointid, Float: x, Float: y, Float: z, Float: size)
{
    if(SetPlayerCheckpoint(playerid, x, y, z, size)) {
        SetPVarInt(playerid, "checkpointid", checkpointid);
        return true;
    }
    return false;
}
stock DisablePlayerCheckpointEx(playerid)
{
    if(GetPVarInt(playerid, "checkpointid") && DisablePlayerCheckpoint(playerid)) {
        DeletePVar(playerid, "checkpointid");
        return true;
    }
    return false;
}
// \/ Tells the compiler that DisablePlayerCheckpoint will be replaced with DisablePlayerCheckpointEx
#define DisablePlayerCheckpoint DisablePlayerCheckpointEx

pawn Код:

//OnPlayerSpawn as example
SetPlayerCheckpointEx(playerid, CP_SPAWN, 0.0, 0.0, 0.0, 5.0);
//in some command
SetPlayerCheckpointEx(playerid, CP_COMMAND, 0.0, 0.0, 0.0, 5.0);

And now at the end we can check what checkpoint the player is in

pawn Код:

public OnPlayerEnterCheckpoint(playerid)
{
    switch(GetPVarInt(playerid, "checkpointid")) {
        case CP_SPAWN: {
        }
        case CP_COMMAND: {
        }
    }
    return true;
}

A streamer does actually the same it just saves the checkpoint data and shows always the nearest