Algodoo

thank you, MoBuilds, Gravitation is very interesting.
Yes, it is prossible to do what you want.
Did you ever use collision-groups?
The white ring should not be attracted but be able to react on collision, right?
one way to do it: duplicate the ring, give the second one negative attraction ( a minus-sign, so it's repulsion) and put both rings on top of each other, and fix them with the F-fixation-tool
A more sophisticated way is to use different collision-groups, i used such to model attraction and repulsion of electric charges (particles of positive and negative charge), so + and + repulse, - and - repulse, + and - attract, - and + attract.

nice!
If you want, you can have a look at my aspheric lense, which has
(for the specified color)
a real focus, i.e. all laserbeams cross at the SAME point, which is called F, Focus.
it is scene 72210.
Even better is the work of noonan: scene 43943
you can find both , if you search the algobox with for the word "aspheric"

@noonan: how did you make your aspheric lens?

thank you, noonan!

funny
I have 150 as score

not much time here to alter things, sorry, but i like it!!

I had some problems after a year to select the circle
and after half an hour i found a way how it works for
me:

1) Rightclick the blue polygon.
2) Move mouse down to CSG. A submenu "Polygon",
i call it for the descrption here "PolyCSC", appears.
3) Leftclick in the letters of "Polygon", keep leftmouse down
and "drag" the submenu PolyCSG to the right, until the main
menu of the polygon vanishes.
4) Rightclick the circle, just below of the "display graph" is
an entry "Selection" (in german: Auswahl), move mouse on it,
there a submenu für the circle appears
i call it for the description here "Circlesub",
in the top line "Circle" (in german: Kreis) is written there
it contains: Select equal, Select invert, unselect,
selected to back, selected to front etc.
5) Leftclick on the Letters "Circle" in the topline of the
submenu "Circlesub", keep mouse down and drag it to the right
until the main circlemenue vanishes.
6) Run the simulation. At my computer, the circle is no more selected
even if you selected it before... ok. But now you can Leftklick
on "Select equal" of the submenu "Circlesub", to select the circle
while simulation is running!
7) Leftklick on "Subtract" (in german: Differenz) of the
Polygon-submenu "PolyCSC", frequently while simulation is running
to shape the circle according to matto's description.

I like your self-made gears so much, that i had to add this super-
detailed description for people like me which are no wizards of
algodoo, you are surely a wizard, thanks 1000 times mille gracie!

The mechanics is so nice, thanks!

Thanks to both of you , s_noonan and Xray! Both for work, thoughts and youtube-links, i like both!

i like physics

inventions really come by playing. good one!

thanks! i like it
specially if the border is a wall with bricks, then its so meaningfull
good work!

nice! i like the colaboaration of the two pushing wheels to bring the next cube into action-position.
One wish: can you make the numbers on the left larger? maybe 6 times larger?
i give it an 8 of 10 for the actual state.

Hello Giorgos,
its a good idea to use minions as an algodoo-object. Today i made my own prototype of a guy which looks like that, but differs to prevent copyright-problems.
If you have fun, then join the collaboration-group
i must first get my "ok" from xray first of cause.
cu,

Hi GMtester
i made my own prototype of a minion, but a bit different, to prevent
copyright-problems. If you want, you can join the collaboration project,
my prototype is
165103
and i plan to do math-adventures with the "mathions".
i need to get permission first by xray.
cu,

Very nice! I will show this to others, if i may. Thanks!

Nice work, thank you!
it is good to have tools, which one can use in scenes, and actuators are good to have. Please, if you can and have the time, comment more inside the scene, like: "use the arrow-keys (up and down) from the keyboard to interact with the springs", in my first humble try i didnt know that i had to use them.

thanks, thats great!

thanks a lot! i like it; your earth is very detailled too, and with the half-transparent-overlay to simulate shadow-side. Also nice idea to hide the pieces of larger objects behind destroyable-ones.



did you see my 4-wins-game? (if you like games)
if you want, we can forge some larger games together, even with dice or strategic ones.

ok, to fast-link to 4 wins:
[scene]150853[/scene]
http://www.algodoo.com/algobox/details.php?id=150853
cu later

Great, you are an expert!!
It works for me. I used the python-version.
I had to install python 3.6.4 , then i followed the other
links of the youtube description
https://www.youtube.com/watch?v=ki_5uS4bOgQ
to install also pygame and then the same way
also numpy.
first, i didnt get it right to install gtts, but then i used
in the console the syntax
pip install gtts
to get it finally installed.
After that, your scene worked, and i was glad
Thanks!!!

congrats, this is sooo good work. Thanks!

Not an easy task to solve it. I found out that many configurations are unsolvable! Can you add in the description that you need to seek for
configurations, that have (R=red=on, B=Black=off)
all black(off) in the upper 4 lines and in the bottom-line
one of the following configurations:
RBBBR
BRBRB
RRRBB
BBRRR
RBRRB
BRRBR
RRBRR

cause only then one can solve it.

If you have time, add a "help"-button, where you
give help-strategies for solving it.
For example: "Try to put all lights in the top 4 lines to black"

or: "start with a board, where all are black, and try
to see, which impact it has if you .... (reverse-
direction-strategy for mazes)"


Thanks for this great game!

i like it!

Excellent work!
If more mathmaticians were in here at algodoo, they all would enjoy its functionality.
You are an expert, FRA32!

ps: bewundernswert! Vielen Dank!

I like it, as it worked with speed 10 at my pc and then it appears to be quite 3-dimensional due to the fading-effect. Very aesthetic results!

Well done! How did you set the moon-velocity to make him orbit around the planet? Please set a hint in the scene that the moon is a the planet in 4 o'clock starting position relatively to the sun. And add some contrast (planets relatively to the background) please.

s_noonan, thank you a lot! nice tutorial-work!
best wishes for 2019, provide us in same way with more excellent work

thanks, s_Noonan and FRA32!
It can be done without activating playmode:
using
GUI.Skin.Borders.ToolIcon.width = [-40, -20, -40, -30]
the usual diasplay of tools disappears.
A slight drawback is the appearance of pan and the
magnifying-glass(zoom), but i can live with that.
This way i can click on the prepared objects and all
is well!!!

To activate the GUI-command above,
even if i typed it into the console (F10) or by clicking
on an object with the script onclick,
i have to open the option-menue, then move the slider
of menue-scaling a bit.

Question: can one force Algodoo to activate
GUI-commands in a more elegant way, maybe also
by a thyme-command?
After leaving the scene, the settings remain, so
i think it has to do with the config-file.
maybe one can execute the config-file again while
algodoo is running?

update: FRA32 fund a better solution:
GUI.skin.toolIconSize = 1;
and
GUI.skin.borders.toolIcon.width = 0;

thanks!!!

Nice!
It works well on my pc. I can use it probably for students, so: thanks!

Thank you, s_noonan!!
so many good ideas inside, usefull also for other scenes, like: layers
and size of items, connected with position of mouse to check if on a
layer a click happened, but saving the objects from moving or beeing
destroyed!
Also the recreation of hotkeys i used now in the update of my scene,
which i will post very soon. I will destroy all hotkeys there in the
hidden-mode, as well as the removal of the original sidepanel.
In my version each click on a tool will be recorded sequentially and
saved in a file, usefull to check wether or not a student was able
to really fulfill a quest, which was set by the teacher.

Now we have good answers to the question of dobili in the forum
http://www.algodoo.com/forum/viewtopic.php?f=11&t=11127

Best regards, DrBalk