Algodoo

s_noonan - Good points!

In the box on the right, change the onHitByLaser code to this:

scene.my.angvel < 94.2 ? {
scene.my.angvel = scene.my.angvel + 0.5
} : {
scene.my.angvel = 94.2
}

And in the box on the left, delete the onHitByLaser code. You should never change a variable from two or more different places at the same time because that will cause a conflict.

Also, you can simplify the script in the green box that displays the angvel value by deleting the script in onHitByLaser, and placing the following script in text =

{
"" + scene.my.angvel
}

NP!

Hi jcharlesk's mom,

Algodoo is a physics simulation type of program. In other words, it simulates motion and the interaction between objects as they rotate, accelerate, or change other physical properties. Algobox (This website) is a place where people can show off their creations, and also is a place where people can learn new things, and learn different ways of producing various scenes.

Unfortunately, some people, especially new users, use the program as if it were an art drawing program, and then they upload their scenes which display no motion or any kind of physical interactions between objects. For the most part, Algodoo users enjoy downloading other user's creations which they can learn from or simply have fun with them. They typically do not want to take the time to download a scene just to find out that it's a picture of a cartoon character, or someone's new marble creation. The Algodoo servers do not have unlimited space, and so we Admins try to keep certain scenes off the server, especially if they are in violation of the Terms of Service, or if they appear to have no value as an active or interactive scene.

If your son wants to create new types of marbles, rather than show them as a static image, show them actually being used in a marble race, or some other type of action scene. If he does that, then his scenes will not get deleted.

We Admins try our best to keep Algobox a safe and fun website that everyone of all ages can enjoy, and sometimes we have to do things that not everyone will agree to or be happy with, but it's part of our responsibilities. We also enjoy uploading scenes of our own.

Thank you for understanding, and let me know in the future if you have other questions or concerns.

Xray

Messiah - Which of your scenes did this user copy? Be specific.

What is it that you don't know?

It won't be so bouncy if you increase the damping on both springs to about 0.8

Please delete your old scene if you no longer need it. Thanks

In the future, when you make changes to a scene, please use the EDIT feature instead of uploading a new scene.

The Linkage -- Apparently, it does nothing other than move back and forth. It's just a joystick without a purpose!

Oh, then you must use the Algodoo built-in browser. You can edit a scene when you use Internet Explorer or some other website browser, but not when you use the Algodoo browser. I see that you deleted the older scene. Thanks!

Just cross your eyes, pull your lips apart, and stick out your tongue. Easy!

This doesn't TWIST anything! What's the point in putting balls in the top and then they drop out at the bottom?

I cannot figure out how it works. Would you mind explaining the "magic" behind what makes it work?

Very clever! Thanks for the detailed explanation! (All this time I thought you were only the best gun mechanic on Algobox. Now I know that you are much more than that! )

What's the point of this scene?

Um.... the girl who sits behind you in class doesn't like you?

I don't think this will work because you placed a fixate (also called a fixjoint) on the final gear which will prevent it from turning. But I am not going to stare at this scene for 4.25 years in order to confirm if what I said is accurate!

Nice looking and well made mechanical design!

Kitty crash - Oh, Okay.

sssssssss!

Wow! I feel like I'm five years old again, playing with blocks in my sandbox!

This is cool! I've seen quite a few scenes here on Algobox of water pillars, but never one with a box balanced on top of it!

By the way, the box collapses the pillar very quickly because of its mass, but if you reduce the mass to about 0.35 Kg, then it stays up indefinitely!

This pinball game needs a lot of work to get it right. First of all, the flippers fall off if they spin around too far. Also, they don't have enough power to kick the ball far enough. The opening between the flippers is too wide, which makes it nearly impossible to keep the ball in play for very long. My list of problems is actually much longer than just these few things, but I didn't want to overwhelm you!

Welcome back to Algobox!

That's what I originally thought when I first saw it, but it IS going in the correct direction.

I'm not that good with making mechanical devices with Algodoo, but there are lots of guys who are. That's why I rely on script so much!

One issue that I have with this scene is the fact that you made it at the extreme zoomed out position. So, now, no one can zoom out any further which is very frustrating. You can do what you want with it, of course, but I'm just giving you my two cents worth.

Use this equation instead:

text = {
"" + (180 + angle * (180) / math.pi)
}

Also, place a hinge (axle) in the box so that it can rotate, and then you'll be able to see the angle (in degrees) change as you rotate it.

No magic. There are many other scenes that show the same thing, and this behavior has been known since 2009. You probably never bothered to search for it, right?

Did you know that you can EDIT your description and correct the misspelled word? You cannot edit from the Algodoo built-in browser, but you CAN edit if you log in using Internet Explorer or some other regular browser.

Very nice job! But, there are two things I don't like about it.
1. The springs that you used as engine mounts (looks pretty lame).
2. The timing chain is very sloppy (I know that it's very difficult
to make tight/strong chains with Algodoo).

Except for those two issues, you did a fabulous job on the engine. It looks fantastic!

You're right, lethalsquirrel. Even the timing chains seem to be more stable at the higher sim freq. Good call!