[JASS] Need help with angles

[dardas]

Hey everyone, i was playing Pudge wars..
and i saw that when you hit a wall for example with the hook,
it caculates diffrences in angles, and shoots it towards the next angle.

for example:

a hook is sent toward a wall, the wall is flat, (180 degrees ______),
the hook hits the wall, and the hook does this:

set angle = angle + 180, (makes him turn back) + ~70.
that makes it add a bit wide angle, and allso turn back.
but thats only flat.. how do i caculate every diffrence in the wall?
(if the wall is 100 degrees, 171 degrees, 50 degrees, just in a easy way)
and in Vjass/Jass if you could.

thanks in advance. (this is just out of curiosity.)

 

[BoneBreaker]

Okay, just use this formula I derived:

  function GetAngleOfReflection takes real incidence, real tangent returns real
    return 2*tangent+180-incidence
  endfunction

What you do is make sure the wall is a unit, not a doodad, and then

call GetAngleOfReflection(GetUnitFacing(projectile), GetUnitFacing(wall))

EDIT: Made it degrees, not radians.

 

[dardas]

well yeah.. i meant angles.. so i guess its radians.

btw, thanks alot and +rep.

Edit: gotta spread.. sry