How can i say "if this is bigger than that" in LSL?

[Philip Elegy]

Example:

I have two integer variables, "x" and "y". And I want to tell my script that if x is bigger than y say "x is bigger than y" else (if y is bigger or equal to x) say "y is bigger or equal to x".

[Peewee Musytari]

< <= > >= Less Than, Less Than Or Equal To, Greater Than, Greater Than or Equal To

http://lslwiki.net/lslwiki/wakka.php?wakka=operators

state_entry()
{

integer x = 10;
integer y = 20;

if(x > y)

{
llSay(0,"X is greater than Y");
}

else

{
llSay(0,"Y is greater than or equal to X");
}
}

[Philip Elegy]

Then what is wrong with my script?

I am trying to make two elevators. This is the script from what I call the "Elevator control panel". It is supposed to receive commands from the caller-buttons, calculate the difference they have from both elevators and then, if the left one has a bigger difference from the right one, send the right one to the caller's floor or else send the left one to the caller's floor.

This is my script so far...

integer RLevel; // Right elevator's level

integer LLevel; // Left elevator's level

integer CLevel; // Caller's level

string sRLevel; // Right elevator's level (string)

string sLLevel; // Left elevator's level (string)

string sCLevel; // Caller's level (string)

integer RDiff; // Right elevator's difference from caller's level

integer LDiff; // Left elevator's difference from caller's level

default

{

    state_entry()

    {

        ShowText = 1;

        llSetText("Starting up", <1,1,0>, 1);

        llRegionSay(-1, "R90"); // This tells the right elevator to go to ground level

        RLevel = 0;

        llRegionSay(-1, "L90"); // This tells the left elevator to go to ground level

        LLevel = 0;

        llRegionSay(-1, "0D190"); // This opens the right ground level's door

        llRegionSay(-1, "0D290"); // This opens the left ground level's door

        llRegionSay(-1, "1D191"); //*

        llRegionSay(-1, "1D291"); //*

        llRegionSay(-1, "2D191"); //*

        llRegionSay(-1, "2D291"); //*

//* = Closes a door

        llListen(-1, "", "", "");

        llSetText("Waiting for command", <0,1,0>, 1);

    }

    listen(integer channel, string name, key id, string message)

    {

        llSetText("Got command", <0,1,0>, 1);

        if (message == "901") // This is from caller button the digit in the middle (0 in this case) indicates the level

        {

            CLevel = 0;

        }

        else if (message == "911")

        {

            CLevel = 1;

        }

        else if (message ==  "921")

        {

            CLevel = 2;

        }

        llSetText("Finding nearest elevator", <0,1,0>, ShowText);

        if (LLevel < CLevel)

        {

            LDiff = CLevel - LLevel;

        }

        else if (LLevel > CLevel)

        {

            LDiff = LLevel - CLevel;

        }

        if (RLevel < CLevel)

        {

            RDiff = CLevel - RLevel;

        }

        else if (RLevel > CLevel)

        {

            RDiff = RLevel - CLevel;

        }

        llSetText("Changing variables to strings", <0,1,0>, 1);

        sRLevel = (string)RLevel;

        sLLevel = (string)LLevel;

        sCLevel = (string)CLevel;

        llSetText("Calling elevator", <0,1,0>, 1);

        if (RDiff < LDiff)

        {

            llRegionSay(-1, sRLevel + "D191"); // Right elevator's door close

            llRegionSay(-1, sCLevel + "911"); // Tell the caller that the right elevator is comming

            llRegionSay(-1, "R9" + sCLevel); // Right elevator go to caller level

            RLevel = CLevel;

            llRegionSay(-1, sCLevel + "D190"); // Door open

        }

        else

        {

            llRegionSay(-1, sLLevel + "D291"); // Left elevator's door close

            llRegionSay(-1, sCLevel + "912"); // Tell the caller that the left elevator is coming

            llRegionSay(-1, "L9" + sCLevel); // Left elevator go to caller level

            LLevel = CLevel;

            llRegionSay(-1, sCLevel + "D290"); // Door open

        }

        llSetText("Waiting for command", <0,1,0>, 1);

    }

}

[Hector Greenspan]

There's nothing obviously wrong in there, apart from the logic being a little overcomplicated.  Without having the whole system it's going to be difficult for us to debug this in the forum.  Feel free to contact me inworld if you get really stuck.

The best way for you to troubleshoot this is to insert outputs into the significant parts of the logic so you can see what's going on (use llOwnerSay()), so you know when certain conditions are being met.  For example...

if(x > y)

{

     llOwnerSay("x is greater than y");

     <existing code>

}

else

{

     llOwnerSay("x is NOT greater than y");

}

Hope that helps.

[Philip Elegy]

My script didn't use one of the elevators but everything is fine now and I 've made my script even more comlicated.

[Hector Greenspan]

Making it more complicated isn't a good thing, especially in your case

Oh, and by the way, you're welcome.