pen-devel

Re: [Pen-devel] can you test drag.py?

[Michael G. <mdg...@cs...>]

Joe Strout wrote:
>> 4. python setup.py build in pen
>
> This did too, and they sound more serious:
> bitmask.c:71: warning: right shift count >= width of type
>
bitmask.c is copied directly from the pygame source, so also not my 
bugs.  I might look into them though.
>
>> 5. copy build/whatever/maskutils.whatever into src/
>> 6. python drag.py in src/
>> 7. if it works, tell me how awesome it is (you can press space to get 
>> some more objects to play with) :)
>
> It works, and it's awesome!  Nicely done.
>
:).  I also borrowed a windows laptop for the weekend and got it to 
build there (http://pen.sf.net/windows.html if you're curious), so I 
think I'll start integrating this into the editor.

Also, here's a teaser of what I'm working on for the ropes:


      *ooo*           ##
     o#####oo        ####     *oooooo
    *# ####  oo     ######  oo#      oooooooooooooo
    o## ###    oo   ###### o ###                   ooooooo*
    o### ##      oo  #### o #####                  ########*
    o#### #        oo ##oo   ###                   ########o
    *#####           o**      #                    ########o
    o                     ###                      ########o
    o                ###  ###                      ########o
    o               # ##  ###                      ########*
    o   ##          ## #       #                          o
    o   ##          ###       ##                         o
    o   ##                   ###                        o
     o ####                 ####                       *
     o ####
     o ####        o*
     o######     oo
     o######   oo
     *###### oo
      *oooo*o


It's still pretty fragile, but you can play with it in cursesropes.py
> I think for the game, we should just draw the collision bodies (which 
> are always either circles or convex polygons) into the drag mask.  As 
> you say, that should be close enough, or so I hope.  Come to think of 
> it, it'd be a very handy debugging feature to draw the collision 
> bodies on screen during play too.  That'd be a great way to make sure 
> the collision bodies are a good fit for the sprite.
>
I wonder if we might want to allow unions of these.  For example, the 
balloon might best be modelled by a big circle at the top plus a 
triangle or trapezoid for the bottom.  Also, this would allow us to have 
concave shapes.

Also, I'm wondering if we should write a little tool for drawing the 
boundary on top of the image and capturing the coordinates, just to make 
our lives easier.
> Best,
> - Joe
>
>
>

Re: [Pen-devel] can you test drag.py?

[Joe S. <jo...@st...>]

On Dec 7, 2008, at 10:49 AM, Michael George wrote:

> I wonder if we might want to allow unions of these.  For example, the
> balloon might best be modelled by a big circle at the top plus a
> triangle or trapezoid for the bottom.  Also, this would allow us to  
> have
> concave shapes.

Yes, we certainly need that.

> Also, I'm wondering if we should write a little tool for drawing the
> boundary on top of the image and capturing the coordinates, just to  
> make
> our lives easier.

Wouldn't hurt -- I've been using a graphics program for that, but a  
custom tool could spit out the Python code with less effort.

Best,
- Joe

Re: [Pen-devel] can you test drag.py?

[Valerie G. <val...@gm...>]

Are we dealing with friction at all? E.g., rope on a pulley has less
friction that rope around a corner.

On Sun, Dec 7, 2008 at 12:49 PM, Michael George <mdg...@cs...>wrote:

> Joe Strout wrote:
> >> 4. python setup.py build in pen
> >
> > This did too, and they sound more serious:
> > bitmask.c:71: warning: right shift count >= width of type
> >
> bitmask.c is copied directly from the pygame source, so also not my
> bugs.  I might look into them though.
> >
> >> 5. copy build/whatever/maskutils.whatever into src/
> >> 6. python drag.py in src/
> >> 7. if it works, tell me how awesome it is (you can press space to get
> >> some more objects to play with) :)
> >
> > It works, and it's awesome!  Nicely done.
> >
> :).  I also borrowed a windows laptop for the weekend and got it to
> build there (http://pen.sf.net/windows.html if you're curious), so I
> think I'll start integrating this into the editor.
>
> Also, here's a teaser of what I'm working on for the ropes:
>
>
>      *ooo*           ##
>     o#####oo        ####     *oooooo
>    *# ####  oo     ######  oo#      oooooooooooooo
>    o## ###    oo   ###### o ###                   ooooooo*
>    o### ##      oo  #### o #####                  ########*
>    o#### #        oo ##oo   ###                   ########o
>    *#####           o**      #                    ########o
>    o                     ###                      ########o
>    o                ###  ###                      ########o
>    o               # ##  ###                      ########*
>    o   ##          ## #       #                          o
>    o   ##          ###       ##                         o
>    o   ##                   ###                        o
>     o ####                 ####                       *
>     o ####
>     o ####        o*
>     o######     oo
>     o######   oo
>     *###### oo
>      *oooo*o
>
>
> It's still pretty fragile, but you can play with it in cursesropes.py
> > I think for the game, we should just draw the collision bodies (which
> > are always either circles or convex polygons) into the drag mask.  As
> > you say, that should be close enough, or so I hope.  Come to think of
> > it, it'd be a very handy debugging feature to draw the collision
> > bodies on screen during play too.  That'd be a great way to make sure
> > the collision bodies are a good fit for the sprite.
> >
> I wonder if we might want to allow unions of these.  For example, the
> balloon might best be modelled by a big circle at the top plus a
> triangle or trapezoid for the bottom.  Also, this would allow us to have
> concave shapes.
>
> Also, I'm wondering if we should write a little tool for drawing the
> boundary on top of the image and capturing the coordinates, just to make
> our lives easier.
> > Best,
> > - Joe
> >
> >
> >
>
>
>
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