Hi I’m currently trying to make my Helicopter have wind dusts like this:
So basically when a Helicopter is very close to the ground the Particle Emmiter will be enabled
I have tried using Cframe Position to detect if the Helicopter is close to the ground but it didn’t worked and there’s no related posts about this.
use
workspace:Raycast()
You can cast a raycast to check weather there is ground under, and then check the distance in order to emit particles or not.
You can look more into it in the docs
local partvector = script.Parent.Position -- Position of your part
local direction = Vector3.new(0, -100, 0) -- Angle to look at
local result = workspace:Raycast(partvector, direction)
if result then
print("Instance:", result.Instance.Name)
print("Distance:", result.Distance)
-- And then whatever you want to check.
end
And how do I detect if the part is like 10 studs up?
Tried to set if the distance is 10 but still didn’t worked.
Raycasting is like a beam. First variable is the beginning point and the second is the direction. You can make the first one the Position of the vehicle, and the other one something like Vector3.new(0,-20,0)
and if the raycast isnt nil it’ll return the object, the position of impact and the Normal. Please also look into RaycastParams for blocking objects or only whitelisting them for your raycast.
This only goes 20 studs down for when searching for impacts.
Shiawase has a perfect reply for you. The studs don’t matter. Set that up fly where you want to be and check the number. That or lower is the trigger to the effect. If that is a bit lower then you wished just go with it. You could just simply check the Helicopter height and trigger the effect from any height. The advantage here is you can tell you’re over sand, do a sand effect or cement do no effect. To me that outweighs being totally perfectly where you want the height … gl
Yea this isn’t really working for me. I’m gonna go find another alternative
You haven’t posted any code that people can help you with. Did you print any output so we can see why it isn’t working?
You have to loop and check again and again, the ray cast just checks one point in time, you have to check again and again. Maybe that is the point you have missed?
I still haven’t found any solutions to detect if it’s like 5 or 10 studs in the air.
This will work. If you post your code and the result you see, someone can tell you why it isn’t working for you.
Try to use print statements to see what it is doing.
Try adding this to your code so you can see what is happening from the output. Change the rayOrigin to whatever part’s position on your vehicle where you want the ray to start.
local rayOrigin = Vector3.zero
local rayDirection = Vector3.new(0, -100, 0)
local raycastResult = workspace:Raycast(rayOrigin, rayDirection)
if raycastResult then
print("Instance:", raycastResult.Instance)
print("Position:", raycastResult.Position)
print("Distance:", raycastResult.Distance)
print("Material:", raycastResult.Material)
print("Normal:", raycastResult.Normal)
else
warn("No raycast result!")
end
this is from:
You can use an attachment position if needed to start the raycast outside of the vehicle part.
This script constantly checks the distance from a part named “Part” to the ground using a raycast. If the distance is less than or equal to 10 studs, it prints the distance. The script utilizes the RunService to repeatedly update the part’s CFrame (position and rotation) and trigger the raycast check.
It won’t continuously print the result when the distance goes below 10 studs, but it serves as a stepping stone to guide you in the right direction.
local RunService = game:GetService("RunService")
local part = workspace.Part
local CFrameValue = Instance.new("CFrameValue")
CFrameValue.Name = "PartCFrame"
CFrameValue.Value = part.CFrame
local function onChanged()
local partPosition = part.Position
local direction = Vector3.new(0, -100, 0)
local result = workspace:Raycast(partPosition, direction)
if result and result.Distance <= 10 then
print("Distance to ground:", result.Distance)
else
print("Not below 10 studs") -- Testing purposes, u can delete it
end
end
local function onHeartbeat()
CFrameValue.Value = part.CFrame
end
CFrameValue.Changed:Connect(onChanged)
RunService.Heartbeat:Connect(onHeartbeat)
It’s not detecting the parts position.
However this did worked but can’t seem to detect the studs.
local partvector = script.Parent.Parent.Wind
local direction = Vector3.new(0, -100, 0)
local result = workspace:Raycast(partvector, direction)
while true do
wait()
if result then
print("Instance:", result.Instance.Name)
print("Distance:", result.Distance)
end
end
It’s still saying “Not below 10 studs”
And It’s still not reacting even if the Helicopter is like 10 or even 1 feet above like this:
You’re only raycasting once, also your direction is -100 studs down so it’ll be active from way higher than you want (?)
Try something like this and adjust for whatever else purpose:
local partvector = script.Parent.Parent.Wind
local direction = Vector3.new(0, -10, 0)
local result = workspace:Raycast(partvector.Position, direction)
while task.wait(0.5) do
result = workspace:Raycast(partvector.Position, direction)
if result then
print("Instance:", result.Instance.Name)
print("Distance:", result.Distance)
end
end
You should really read the documentation for raycasting by going to the docs Shiawase replied with.
You can look more into it in the docs
PS: if it starts hitting the helicopter itself please bring that up
Hey,
I was able to something that I think is like what you mean:
I created a topic for it but based on your question
if you want to measure the distance between 2 points use magnitude. This is way quicker than raycasting