User:Jesse Barnett/Script Anatomy

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<lsl> ///////////////////////////////////////////////////////////////////////////////////////// //////////////////////////////ANATOMY OF A SCRIPT///////////////////////////////////

//////GLOBAL VARIABLES //Variables declared here can be used throughout the script //Global Variables make the script easier to read and edit //Global Variables use less memory if used multiple times in a script //Global Variables use more memory if only used once or twice, balance this with readability //Name a variable so that you can remember what it is and references //This becomes more important as the script grows in length

string strExample = "I am a string"; list lstExample = ["I am a string in a list"]; //lists start at 0 vector vecExample;// Global Variables need to be declared but do not need to be defined yet

//////USER DEFINED FUNCTIONS //Please see the wiki section on User Defined Functions for more info

my_function(){ llOwnerSay("I am called from a User Defined Function"); }

/////STATES //Every script has to have at least one state //The first state is named default and does not need to be declared as a state //except to call it from another state //Any other states need to be declared //Example: "state next" w/o qoutation marks //Wherever it is used it will always be both words: "state next" w/o quotation marks //Declaring state next and calling just "next" will not work //Multiple states can make a script easier to read and maintain //It is better to stay within one state if at all possible

default{ //notice that "state" is not necessary /////EVENTS //Events are declared inside a state //You can not declare an event inside another event or User Defined Function

state_entry() { llOwnerSay(strExample + " called from within state_entry"); //Notice that i have just combined the two strings this will result in //this message: //"I am a string called from within state_entry"

my_function(); //Now I have just called the user defined function

vecExample = llGetPos(); //Now I have defined the vector I declared globally //This can now be used throught the script and //will stay the same unless it is redefined } touch_start(integer n) { llOwnerSay("I have just been touched");

/////Local Variables //Local Variables use less memory then Glabal Variables //But can only be used within the current event string lstExampleString = llList2String(lstExample, 0); llOwnerSay(lstExampleString);

llOwnerSay("I am a vector cast as a string: " + (string)vecExample); //llOwnerSay "says" strings and only strings to //"say" anything that is not a string it must be "cast" //Please see the wiki section on "typecasting" for more information //vecExample is a vector but here I have "cast" it as a string

state next; //Several things occur when you change states //Some porcesses are put on hold and you may //need to put some on hold yourself //to do this use state_exit() } state_exit() { llOwnerSay("I am called from state_exit"); } }//Brackets are used everywhere in a script //A closing bracket has to be used for every opening bracket

state next{ state_entry() { llOwnerSay("WOOHOO! I am called from a different state " + "Touch me again to switch back to state default"); //Notice how I broke the string into multiple parts to keep the line //from running off the end" } touch_start(integer n) { llOwnerSay("Switching back to the default state now"); state default; //Notice that here I have had to call default as a state } //If you do not need it, you do not have to call state_exit } </lsl>