tutorialoutline.txt

A simple program:

-

trace("hello world");

-

While loops:

-

var x = 5;
while (x<10) {
	x++;
	trace(x);
}

-

For loops:

-

for (i in 0 ... 100)
	trace((100-i)+"bottles of beer on the wall");

-

For loops can only go up. Sorry.

More for loops:

-

var exclamation = ["I","like","big","zeedonks"];
for (s in exclamation)
  trace(s);

-

<a class="tutoriallink"  href="https://en.wikipedia.org/wiki/Fibonacci_number">Fibonacci number</a> printer

-

function f(n) {
    if (n<2) return 1;
    else return f(n-1)+f(n-2);
}

/* if you make the value at all big,  */
/* your browser will explode.         */
/* So don't do that!                  */
trace(f(5));

-

If you make an update function, it will be call every frame. That's how you draw things.

-

function update(){
  Gfx.fillbox(10,10,20,20,Col.RED);
}

-

At any time, you can press ctrl/cmd+space to bring up autocomplete.  Here's how to do input:

-

function update()	{
  if (Input.justpressed(Key.UP)){
    trace("pressed up, innit");
  }
}

-

Here's how you display text on-screen:

-

function update() {
    Text.display(0,0,"Hello, sailor!");
}

-

Switch cases in Zeedonk look like this:

-
var animal = "zeedonk";

//Note that you can have multiple patterns,
//and that break commands are not used.
switch (animal) {
  case "zebra", "donkey":
    trace("zeedonkish");
  case "zeedonk":
    trace("zeedonk");
  default:
    trace ("not zeedonk");
}
-

You can use && for AND and || for OR in if statements:

-
var animal1 = "zebra";
var animal2 = "donkey";

if((animal1 == "zebra" || animal1 == "donkey") && 
   (animal2 == "zebra" || animal2 == "donkey") && 
   animal1 != animal2){
  trace("ZEEDONK");
}else{
  trace("NOT ZEEDONK");
}
-

You can use the keyword <b>null</b> to check for unset variables.

-
var nothing;
trace(nothing);
if(nothing == null) nothing = "something";
trace(nothing);
-

For more, browse the examples via the examples dropdown in <a class="tutoriallink" href="../editor.html">the editor</a>, or browse the many examples in the <a class="tutoriallink" href="index.html">library reference</a>.

Good luck!