localAnimator.addDrawable not rendering correctly because of x coordinate of player's position

[plucky birch]

How do I work with localAnimator and world coordinates? Depending on where I am the UI elements I rendered disappear. I've observed this even with my prior mod, Project 42. I need help understanding the coordinate system and how localAnimator.addDrawable() works with it.

I've come up with a finicky solution specifically for project 42, worldifying the coors of the line indicator for the alt ability, where alfa and beta are the vectors to worldify:

function worldify(alfa, beta)
  local a = alfa
  local b = beta
  local xmax = world.size()[1]
  local dispvec = vec2.sub(b, a)
  if a[1] > xmax/2 then 
    a[1] = -1 * (xmax - a[1])
  end
  b = vec2.add(a, dispvec)
  return {a, b}
end

I forgot why this works, could someone help me understand? thanks

It's 3am and we have 7am classes tomorrow so I just typed away my question and hope for an answer tomorrow (i'll add more details and clarifications when i get up 💀)

[flint merlin]

vec2.sub doesnt work well on world border sometimes

[plucky birch]

i've mostly been using vec2.add tho

haven't really used vec2.sub in my localanimator calculations so far nvm im blind

[plucky birch]

also not just the world border; sometimes it doesn't render anything in entire sections of worlds

what does a world's coordinate system look like? given an x-size x?

[regal knoll]

uhhhhhhhh, go use world.xwrap(x) to have x within world buondaries

for example with x being 1337 in a world size of 1000, it'll give you 337

and what is dispvec even, or what does the vec sub do there

use world.magnitude(vecA, vecB) to get distance between points, and world.distance(vecA, vecB) to get the separation between those two values as {X, Y}

[lean lava]

i think just using world.distance instead of vec2.sub works

i think world.nearestTo also might be useful

i dont remember lol

[plucky birch]

aight, will try

also hi pat i remade the hitscan mechanic of one of your guns if u dont mind