Linden Scripting Language Notes

Burger Flipper

Ken Girard 8th July 2023 at 1:55am

// NOT WORKING

// This script will make an object say a random phrase from a list every 100 seconds.

// Define the list of phrases.

phrases = ["I am an auto chef.", "Burger ready.", "Whoops, burnt that one.", "Who needs a burger?", "Flippin' burgers here, boss."];

// Create a timer that will trigger randomly between 20 & 199 seconds.
timer = new Timer(rand(20,199);

// When the timer triggers, say a random phrase from the list.
timer.onTimer = function() {
  phraseIndex = rand(0, phrases.length - 1);
  say(phrases[phraseIndex]);
};

// Start the timer.
timer.start();

llOwnerSay

Ken Girard 22nd June 2023 at 9:34pm

llOwnerSay is a function that will send a message only to the owner of the object.

default
{
  touch_start()
    {
      llOwnerSay("You own this");
    }
}

How To Create A New Script

Ken Girard 22nd June 2023 at 9:30pm

Right-click somewhere
Right-click on the object
Choose Edit
Left-click Content
Left-click New Script
Double-click New Script file
Type your script in the file
Left-click Save

Next Making Your First Script

Functions

Ken Girard 22nd June 2023 at 7:56pm

Mutability

All types in LSL are immutable (they can't be mutated by side effect), variables can only be changed by being overwritten. There is no way to indirectly modify a variable's value; the only way is through direct interaction with a storing operator (=, +=, -=, *=, /=, %=, ++, –).

Built-in functions will never modify the variables used as parameters. User functions that change the values of parameters inside the function scope will not have those changes applied to the variables that supplied those parameters.

For more information, and a complete list of all functions: https://wiki.secondlife.com/wiki/Category:LSL_Functions

llSetText

Ken Girard 22nd June 2023 at 9:27pm

llSetText(string message, vector color, float alpha);

default { { state_entry() { llSetText("Hi", <1.0,1.0,1.0>,1.0); } } }

Events

Basics

Making Your First Script

Ken Girard 23rd June 2023 at 3:39am

default
{
    state_entry()
    {
        llSay(0, "Hello, Avatar!");
    }

    touch_start(integer total_number)
    {
        llSay(0, "Touched.");
    }
    
}

This will say "Hello, Avatar!" when rendered, and 'Touched" when someone touces it.

default is used at the start of every script

touch_start is an event that will be triggered when someone touches the object

integer total_number is a variable. integer means it is a whole number (1, 2, 3,...). total_number is the name of the variable. You can name it anything you want.

llOwnerSay is a function that will send a message only to the owner of the object.

Use your Tab button to indent the code.

Next Expand Your First Script

Expand Your First Script

Ken Girard 23rd June 2023 at 3:34pm

Let's edit the script:

default
{
    state_entry()
    {
        llSay(0, "Hello, Avatar!");
    }

    touch_start(integer total_number)
    {
        // Says "Touched." in public channel
        llSay(0, "Touched.");

        // Changes the color of the item to red on all sides
        llSetColor(<1.0, 1.0, 0.0>, ALL_SIDES);

        // Makes green text to appear over the item
        llSetText("Nice to meet you!", <0.0, 1.0, 0.0>, 1.0);

        // Makes the item 50% transparent
        llSetAlpha(0.5, ALL_SIDES);

        // Makes the item be covered in the texture
        llSetTexture("a4e6ce5f-7df0-56b2-a74a-2dffe1519185", ALL_SIDES);

        // if the owner touches the item it says says "You own this." only to the owner in public channel
        llOwnerSay("You own this");
    }
}

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Norbert Stelzer 15th January 2023 at 11:59am

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