The Turtle class can be used to create new turtles.
To make a Turtle, use t = new Turtle. (Here t can be any variable
name we choose). A Turtle is always created at the center home position,
so you may not notice the new Turtle if there is already a turtle
at that spot: they pile on top of each other perfectly.
To use the turtle, put a dot between the variable name and the method:
t = new Turtle t.pen green t.fd 100 t.rt 270, 100 t.bk 200
All the turtle functions that you are familiar with work as
methods on the turtle: you can use pen, dot, label, play,
and so on.
Turtle animations follow the jQuery animation model: every turtle has its own animation queue.
When you tell a turtle t.fd 100, it will not move right away:
it will add the command "fd 100" to its animation queue,
and it will do the forward motion after all the queued animations
have already finished.
Every turtle and every element on the screen has its own animation queue. That means if you have two turtles and you tell them both to move, they will move simultaneously to each other.
To synchronize motion between turtles, try using sync, plan,
or done.
Any element can be moved like a turtle. Built-in turtle alternatives
include Piano and Webcam, but using jQuery, you can treat
any element on the screen (such as an <img> or <p>) as a turtle.
The built-in Sprite class is a "blank" turtle that you can draw
on yourself using the drawon method.