LSL 101/Simple Script Skeleton

LSL 101: The Wikibook

• A Gentle Introduction
• The Structure of a Script
  • Simple Script Skeleton
  • Comments, White-space and Formatting
• Events & Event Handlers
  • The touch start Event
• Variables
  • Strings and Simple Output
    • String Concatenation
  • Integers
  • Using Variables
    • Global vs Local Variables
    • Variable Initialization
• Functions
  • Functions That Return a Value

The End Game

• Creating a Script
• Compile Time Errors
• Logic
• Conclusion

The Linden Scripting Language (or LSL) is a relatively simple computer programming language specifically designed for controlling objects in the SL environment. More specifically, it is a language for instructing a computer (the SL server) to take some action. Modeled loosely after natural human language, a computer language has words, punctuation, grammatical rules and meaning. These language rules are are much simpler for a computer language than for a natural human language. But unlike a natural language, the rules are ruthlessly enforced. The computer that executes the instructions in the script is not expected to be anything more than the big dumb machine that it it is. One consequence of this is that there are certain formalities that always have to be followed.

Here is the simplest possible valid LSL script. In fact, it is entirely formalities; it actually doesn't ask the computer to do anything.

<lsl> default {

    state_entry()
    {
    }

} </lsl>