You can write your topic however you want, but you need to answer these questions:
What do you want to achieve? i want to create a real scale tank simulation
What is the issue? when I minus the launching pos from the mouse.hit.p,The .magnitude returns around 10000,While the real distance of the building that im shooting is around 12000 stud,When i print it it return as 10000 instead,Even when use a custom .Magnitude function
**What solutions have you tried so far?**Firstly,When the real …Magnitude dont work,I’ve created a new function which does math.abs on xyz and add it up,And also seems that the raycast has limit,Idk is this matter or not
heres the script
local d = abs(hrpcf * Vector3.new(0, 2, -2) - pos)
Custom magnitude func
local function abs(pos)
local x = math.abs(pos.X)
local y = math.abs(pos.Y)
local z = math.abs(pos.Z)
return x+z+y
end
Well, as you’re saying, it’s probably the maximum yeah. What you could try to do is use ScreenPointToRay() to remove the limit. I’m not sure if this works but you can try.
Just to confirm this, yeah there’s a maximum length for every raycast:
The mouse’s internal ray extends for 1000 studs. If the mouse is not pointing at an object in 3D space (for example when pointing at the sky), this property will be 1000 studs away from the Workspace.CurrentCamera .
- Mouse | Roblox Creator Documentation
Annoyingly the wiki says 1000 when OP is clearly getting a result of 10,000 :-/ @tin_nim please double check your results and post in this wiki correction thread:
It technically specifies that factually incorrect API docs don’t belong there, but only regulars can post actual bug reports so unless you’re regular it’s your best bet AFAIK At least this thread will turn up when other people have the same issue.
To work around the limit, you can create a function that chains together several “small” raycasts to form one long raycast:
local RAYCAST_MAX_DISTANCE = 5000
function longRaycast(origin: Vector3, direction: Vector3, raycastParams: RaycastParams): RaycastResult
local result = game:GetService("Workspace"):Raycast(origin, direction, raycastParams)
if result then
return result
elseif direction.Magnitude > RAYCAST_MAX_DISTANCE then
return longRaycast(origin + direction, direction - direction.UNIT * RAYCAST_MAX_DISTANCE)
else --This one strictly unnecessary, you can remove it if you understand why the function would return nil either way
return nil
end
end
I haven’t tested this to see if there are any errors, but the idea works. One thing I’m not sure about is what happens if a surface on the long ray is exactly between the end of one short ray and the start of the next short ray. I.e. if a surface doesn’t get detected if the ray is cast from a point on that surface or if the ray ends exactly at that surface. Testing is needed to find out. If it’s an issue, an easy work around is to make the rays slightly overlap.
I have been summoned! Readers – you can message me directly with Developer Hub corrections if you are otherwise unable to post in that topic/megathread. I implore you to make my job easy by providing some code to demonstrate the actually correct behavior. I’ll be more than happy to make the correction
Hello,It actually works I’ve made some modification to it to make it work with mouse.hit
Raycasting Code
local function longRaycast(origin: Vector3, direction: Vector3, raycastParams: RaycastParams): RaycastResult
local result = game:GetService("Workspace"):Raycast(origin, direction, raycastParams)
if result then
return result
elseif direction.Magnitude > 4500 then
local left = direction.Magnitude -4500
print("!")
return longRaycast(origin + direction, direction - direction.Unit * left,raycastParams)
else --This one strictly unnecessary, you can remove it if you understand why the function would return nil either way
return nil
end
end
Mouse Detection Stuff
local unitRayDirection = mouse.UnitRay.Direction
local rtx = longRaycast(script.Parent.Handle.Position,unitRayDirection*12000,raycastparam)--12000 is the distance,Max
At least this thread will turn up when other people have the same issue.