I’m pleased to announce a new release of Kojo. Highlights include:
As always, the new version is available from the Kojo Download Page.
Enjoy!
I’m pleased to announce a new release of Kojo. Highlights include:
As always, the new version is available from the Kojo Download Page.
Enjoy!
I’m pleased to announce a new release of Kojo. Highlights include:
As you can see, there’s a whole bunch of exciting new stuff in this release. Watch out for samples of this stuff in the coming weeks. In the meantime, there’s a new book in the works — Kojo Programming Quick-Ref, which describes a lot of the new features. You can download this book from the Kojo beta books page.
As always, the new version is available from the Kojo Download Page.
Enjoy!
I’m pleased to announce a new release of Kojo. Highlights include:
As always, the new version is available from the Kojo Download Page.
Enjoy!
I’m pleased to announce a new release of Kojo. Highlights include:
Try running the code below to see that in action:
val size = 100
def S = PicShape.circle(100)
def stem =
scale(0.13, 1) * penColor(noColor) * fillColor(black) -> S
clear()
setBackground(Color(255, 170, 29))
invisible()
def drawing(n: Int): Picture = {
if (n == 1)
stem
else
GPics(stem,
trans(0, size-5) * brit(0.05) -> GPics(
rot(25) * scale(0.72) -> drawing(n-1),
rot(-50) * scale(0.55) -> drawing(n-1)
)
)
}
val pic = trans(0, -100) -> drawing(10)
draw(pic)
The new versions of the shapes continue to participate in collision detection. Try the code below to see that in action:
def p = Picture {
right(60)
repeat(3) {
forward(3)
right(120)
}
}
def p2 = PicShape.arc(1, 140)
clearWithUL(Cm)
axesOn()
gridOn()
invisible()
val pic1 = p
val pic2 = trans(4, 4) * rotp(-10, 1, 0) * flip -> HPics(
p2,
p2
).withGap(1)
draw(pic1, pic2)
animate {
if (pic1.collidesWith(pic2)) {
pic1.translate(-0.1, -0.1)
}
pic1.translate(.025, .025)
pic2.translate(-.01, 0)
}
Note – If you are upgrading from Version 140813-2 of Kojo, and you are on either Windows or Mac, you need to get rid of a file in your Kojo2/lib directory — jdi-win.jar (Windows) or jdi-mac.jar (Mac). You can either do this manually, or by uninstalling the older version of Kojo before you install the new version.
As always, the new version is available from the Kojo Download Page.
Enjoy!
I’m pleased to announce a new release of Kojo. This release includes a couple of big features:
This feature is based on work done by Sami Jaber during GSOC’13.
Here’s how you use Tracing. Copy the program below into the Script Editor:
def square(n: Int) {
repeat(4) {
forward(n)
right()
}
}
clear()
square(100)
Now click on the Trace button 
in the Script Editor Toolbar.
This will run the program in Trace mode and bring up the Program Trace window:
The new window shows you a trace of all the important command/function Calls and Returns in your program. If you click on a trace element, the line in the script editor which generated that element gets highlighted (see below), and a marker appears in the drawing canvas showing you the contribution of that element to the drawing inside the canvas:
Tracing works well for non-visual programs, too. Try it with this program:
def factorial(n: Int): Int =
if (n == 0) 1 else n * factorial(n - 1)
factorial(4)
Hopefully, that is enough information to get you started with tracing. I’ll do a more detailed post on this topic later…
With this feature, you can make scripts refer to other scripts by using #includes. So, for example, you might define a function in a file called script1.kojo:
def sum(n1: Int, n2: Int) = n1 + n2
And then, in another script, you can start using the sum function like this:
// #include script1.kojo sum(2,3)
This allows you to start writing libraries of useful commands/functions that can be reused across scripts.
Many thanks to Björn Regnell for his contributions to the #include feature and his feedback on the Tracing feature.
As always, the new version is available from the Kojo Download Page.
Enjoy!
I’m pleased to announce a new release of Kojo. The main highlight of this release is the addition of Arithmetic Aerobics. This is an area of Kojo where kids can practice (and improve) their math calculation skills, which are an important part of math and science proficiency in the school curriculum.
As always, the new version is available from the Kojo Download Page.
Enjoy!
I’m pleased to announce a new release of Kojo. Highlights include:
As always, the new version is available from the Kojo Download Page.
Enjoy!
I’m pleased to announce a new release of Kojo.
The release introduces the Kojo Scratchpad, which is an instance of Kojo that you can fire up from within Kojo to do scratch work – without disturbing what you are doing in your main Kojo instance. A Kojo Scratchpad has all the functionality of Kojo except for one thing – it does not save a history of the work you do within it; work history is available within a session, but disappears as soon as you shut down the Scratchpad. You can work with files as usual within a Scratchpad.
You can fire up a Scratchpad from the File menu.
As always, the new version is available from the Kojo Download Page.
Enjoy!
I’m pleased to announce a new release of Kojo. Highlights include:
As always, the new version is available from the Kojo Download Page.
Enjoy!
I’m pleased to announce a new release of Kojo. Highlights include:
As always, the new version is available from the Kojo Download Page.
Enjoy!
I’m pleased to announce the first Kojo release in the 2.1 series. Highlights include:
Feedback welcome. As always, the new version is available from the Kojo Download Page.
Note – If you have Kojo 2.0 installed, please uninstall it before installing this version.
Enjoy!
The Kojo Learning Environment 