Box2d wallstick

[Nsmurf]

Hi,

I'm in the process of making a box2d platformer (don't look at me like that! I have good reasons, I swear!). I's going well, except that there's a bit of wallstick.

See image:

NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO!

Screenshot 2013-12-03 19.22.41.png (23.84 KiB) Viewed 2053 times

How can I avoid this?

Thanks,

Nsmurf.

[ejmr]

Please upload/attach a '*.love' file so that we can see the code. That really, really helps debugging.

[Nsmurf]

Here's the .love, but I'm fairly certain it's a box2d issue, not a coding issue.

[bekey]

-snip-

[Nsmurf]

That looks like it'll fix it, but I'm gonna wait until tomorrow to try it. Thanks!

[ivan]

I believe this is caused by the "inside edges" problem where objects get stuck between the ledges of box shapes. It could happen when moving on top of horizontal platforms as well:

Code: Select all

        __
   <---/  \
__ ____\__/___
  |    |    |
  |    |    |

I read somewhere a simple and hacky solution to this problem - make your INSIDE tiles overlapping hexagons:

Code: Select all

  _____________
  | a | b | c |
  |   |   |   |
  -------------

b is an inside tile and a & c are outside tiles.
So basically you have to create a hexagon shape for inside tiles (like b):

Code: Select all

  _________
 /         \
/           \
\           /
 \_________/

This would push the player away from the platform so he wouldn't get stuck:

Code: Select all

 _____ ________ _____
|     /|      |\     |
|a   / |  b   | \  c |
|    \ |      | /    |
|_____\|______|/_____|