For my game I want to make a thicker beam type thing that would damage any players caught in it. (Think Lux ult from League of Legends.) But I’m wondering what the best method of doing this would be?
Would it be good to do like 3-5 raycasts to mirror the visual thing, or is there something else I can do? I had something like this in mind:
I’m not super sure how to approach this because I’ve never done anything like it before, so my apologies if this was the wrong place to post or anything or if this is a duplicate of a topic I couldn’t find. ^^
Raycast to every single player simultaneously and then consider them ‘hit’ if the angle at which the ray was cast from the origin of the beam is within a certain threshold
You could just raycast a bunch, that would be easy to do and probably work fine. Didn’t test it, but this is an example of sending a rectangle of rays:
-- makes a (width*height)-grid of raycasts in the given direction
-- returns a table of all the RaycastResults which hit something
-- widthRays and heightRays are option, they represent how many rays to cast in each
-- axis - defaults to 1 per stud.
local function ThickRaycast(origin, dir, width, height, widthRays, heightRays)
widthRays = widthRays or width
heightRays = heightRays or height
local cframe = CFrame.new(origin, origin+dir) -- there are better ways to get this but w/e
local hitResults = {}
for row = 1, heightRays do
for col = 1, widthRays do
local x = width * ((col - 1) / (widthRays - 1) - 0.5)
local y = height * ((row - 1) / (heightRays - 1) - 0.5)
local rayOrigin = cframe + cframe.RightVector * x + cframe.UpVector * y
-- add params if you want
local result = workspace:Raycast(rayOrigin, dir)
if result ~= nil then
table.insert(hitResults, result)
end
end
end
return hitResults
end
Another fun option might be to treat other players as spheres and perform some kind of cylinder-sphere intersection on them.
I would bet that twenty simple c-side raycasts are faster than the lua-side GJK intersection checks that the rotated region3 module uses internally. Not knocking that module, it’s really cool and well made, but I think it’s overkill for this.
You think so? RR3’s been pretty speedy no matter which end I require it from. I definitely have a bias against rays, though - bane of my existence for the years I’ve spent needing them in creating fighting games.
Actually I changed my mind, rr3 or a similar approach would be better for this application because raycasts return the first hit thing and presumably OP wants the behavior to be more AOE.
