Jump mesh if add new mesh under first

[Snow Bars]

Hello!

I am have a problem with understand physics in babylon. If I add new mesh under existing then existing mesh jump instead change it position of y-axis on height lower object.

Example: http://playground.babylonjs.com/#4OULE

What am I do wrong?

P.S.: sorry for my English...

[dbawel]

@Snow Bars -

Sorry that something appears to be lost in the translation, as everything you've coded appears to be working as expected. If possible, can you try and rephrase the question to make it clearer to understand specifically what behavior you are looking for on a per object basis? Perhaps make the question much longer and more thorough so that one of us might understand what you are expecting to see happen.

Thanks,

DB

[adam]

You are overlapping the boxes.  Try this:

http://playground.babylonjs.com/#4OULE#1

[Snow Bars]

dbawel, thanks for comment.

Try to clarify the idea.

I have many meshes which I need them in lines one on one. I.e. one line of object exists on scene. I add one object under this line. I want this line automatically lifted up on the bottom object height. And if I delete bottom object the line must fall down. I may use arrays of objects and the cycles but there may be a huge amount of objects. And a huge amount of object lines too. I would like to simplify algorithm and I think that the physics engine may do all (or some) of these things.

Adam, thank you very much for the demo. Blocks lift down just as I need on the demo. What I would like to gain is to lift them up in the same way.

[Wingnut]

Hi guys.  I did another version:  http://playground.babylonjs.com/#4OULE#4

It inserts/adds thin mesh at the bottom of the stack.. every 2 secs.

I have solved nothing... but... its something new to stare-at, and think about how to solve this challenge.  hmm - scratch scratch.

This ALMOST seems like a job for non-physics, if that is possible.

Add box TO bottom of stack, then move entire stack up == height of new box.

Remove box FROM bottom of stack, then move entire stack down == height of new box.

But maybe stacks are supposed to tip-over sideways, sometimes?  (in the game)  If so, then physics engine is a sure requirement... I think.

How to insert/remove any-size box from bottom, without much bounce/spring.  hmm.   Difficult.  I have ideas, still. 

[adam]

http://playground.babylonjs.com/#4OULE#7

[Wingnut]

Not bad at all, Adam!  Not bad.  I sort of lost focus... http://playground.babylonjs.com/#4OULE#6

I got lost in the playing. 

http://playground.babylonjs.com/#4OULE#8

You would think that a stack of spheres would be far more wobbly than a stack of planes.  But nope... spheres stack very nice.  hmm.

I think we know why the stack of flat boxes tips over so easy, and often to the same side.  It's because of the same side-slide jitter that Steffan is experiencing with his load handler... me thinks.

[dbawel]

@Snow Bars -

As usual, I got beat to the punch. I hope that @adam and @Wingnut answered your question. I'll be curious to see what kind of game you're building, as this could be allot of fun!

DB

 

[Wingnut]

Hi DB!  Jump on in!    I don't think we're anywhere near a perfect solution, yet.

I was thinking about making an invisible mass-less ground ABOVE the stack... repeatedly moving that upward the same amount as the height of the each newly-added box, and then reversing gravity. 

How innovative, eh?  (snicker)  New boxes will fall upward, and the mass 0 ground... atop the stack, will keep boxes from exiting into outer space.  Wha-da-ya-think, guys?  Crazy, huh?  When its time to remove boxes, normalize the gravity and remove from the bottom of the stack (true bottom).  Then move the invisible top-ground... downward... the same amount as the height of the removed box, and then reverse gravity again.  Wow! 

Toggling gravity direction... depending-upon add box or remove box.  Scary!  Might work.