Scratch
archived forums
#1 2011-04-12 11:35:36
- courtneyfay
- New Scratcher
- Registered: 2011-04-12
- Posts: 1
chemistry gaseous molecules simulation
Hi,
I'd like to make a gas simulation similar to the one found on this site http://intro.chem.okstate.edu/1314f00/laboratory/glp.htm
where the molecules bounce off the walls and off each other.
I know how to make them avoid each other (with the sensing options) but so far in order to get them to move I had to program them on particular paths. What I'd really like is for them to move more randomly.
Any suggestions?
Offline
#2 2011-04-12 13:57:48
- The_Dancing_Donut
- Scratcher
- Registered: 2010-08-03
- Posts: 1000+
Re: chemistry gaseous molecules simulation
On each particle...
[blocks]<when green flag clicked>
<forever>
<turn cw( <pick random( )to( )degrees>
<move( <pick random( )to( )steps>
<if on edge, bounce>
<when green flag clicked>
<forever>
<if><touching color[ Colour of the other particles
<turn cw( <pick random( )to( )degrees>
<move( <pick random( )to( )steps>[/blocks]
That should work...
If your particles are all different colours, then you will need to do it like
[blocks]
<when green flag clicked>
<forever>
<if><touching[ the particle sprite[blocks]
As above.
Make sure you list all the particles that each particle needs to repel using this block, [blocks]<< <and> >>[/blocks] . Hope this helped!
Offending strangers since 2010.
Offline
#3 2011-04-12 14:51:51
- yoshidude56
- Scratcher
- Registered: 2010-01-12
- Posts: 100+
Re: chemistry gaseous molecules simulation
The_Dancing_Donut wrote:
On each particle...
[blocks]<when green flag clicked>
<forever>
<turn cw( <pick random( )to( )degrees>
<move( <pick random( )to( )steps>
<if on edge, bounce>
<when green flag clicked>
<forever>
<if><touching color[ Colour of the other particles
<turn cw( <pick random( )to( )degrees>
<move( <pick random( )to( )steps>[/blocks]
That should work...
If your particles are all different colours, then you will need to do it like
[blocks]
<when green flag clicked>
<forever>
<if><touching[ the particle sprite[blocks]
As above.
Make sure you list all the particles that each particle needs to repel using this block, [blocks]<< <and> >>[/blocks] . Hope this helped!
This idea sounds pretty good. Donut's got it perfect!
Offline