Angle bounce?

[PandaExplosion]

Hi, I have an object that I want to bounce foward when hitting the wall. Pretty much how light work when reflecting in a mirror.

I would like to know if there's a math for that, right now I am just adding +45° when the object bounces, which is lame I think.

Thanks beforehand.

[Corlen]

Change direction to (object's direction) - 16 ? Or if you're using the bouncing ball movement, just use bounce in the movement actions?

[PandaExplosion]

Its working as a "static" object, I am using some heavy coding here xD

[Corlen]

I don't know the specific code to do a custom bouncing ball type movement but perhaps try that direction - 16 if I am understanding your request correctly that you want it to bounce in the exact opposite direction.

[Xinok]

I have returned after five years just to help you out.

I actually figured this out a few years ago and I uploaded the files here: http://www.multiupload.com/F8HVDT5UIS

They're MMF 1.5 files which use extensions which may not be available for MMF2 (Angle Calculator, Maths Army Knife), so I included a screenshot of the events that matter.

[PandaExplosion]

Thanks a lot!

I almost read "I came from five years into the future to help you out"

Your help was epic!

[Pixelthief]

If you want to reflect an object off a surface, you need to do a linear reflection off that, which requires you to know the normal angle of that surface. Once you know its normal angle, its very simple vector math. But while in a 3d vertex'd application, its very easy to retrieve a normal angle, in a 2d sprite'd application, its not a trivial hunt. I developed an algorithm for finding these normal angles that is quite efficient:

http://www.clickteam.com/epicenter/ubbthreads.php?ubb=showflat&Number=207486#Post2074 86

Heres the vector math once you know that normal angle:

http://mathworld.wolfram.com/Reflection.html