How can I fix my ground raycasting script?
I have a module script that is supposed to detect the ground by having several origins and looping through them. However, the script doesn't detect anything. I don't really understand raycasting well, so I have no idea what I'm missing here.
Module for Detecting Ground
function groundDetection:set(Character)
local raycastParams = RaycastParams.new()
raycastParams.FilterType = Enum.RaycastFilterType.Blacklist
raycastParams.FilterDescendantsInstances = {Character}
raycastParams.IgnoreWater = true
local humanoidRoot = Character.HumanoidRootPart
local xRange = 0.95
local yRange = 3.05
local zRange = 0.475
local origins =
{ humanoidRoot.Position,
humanoidRoot.CFrame.RightVector*xRange, humanoidRoot.CFrame.RightVector*-xRange,
humanoidRoot.CFrame.LookVector*zRange, humanoidRoot.CFrame.LookVector*-zRange,
}
local hitParts = {}
for i,origin in pairs(origins) do
local newOrigin = Vector3.new(origin)
local destination = CFrame.new(origin).UpVector * -yRange
local raycastResult = workspace:Raycast(newOrigin, destination, raycastParams)
if raycastResult then
local distance = (origin - raycastResult.Position).Magnitude
local p = Instance.new("Part")
p.Anchored = true
p.CanCollide = false
p.Size = Vector3.new(0.1, 0.1, distance)
p.CFrame = CFrame.lookAt(origin, raycastResult.Position)*CFrame.new(0, 0, -distance/2)
table.insert(hitParts, raycastResult.Instance:GetFullName())
end
end
print(hitParts)
end
2 answers
It seems to me (although I may be mistaken) that your yRange is too small of a number.
I whipped up this script after seeing this post, and it works:
game.Players.PlayerAdded:Connect(function(player)
player.CharacterAdded:Connect(function(char)
local params = RaycastParams.new()
params.FilterType = Enum.RaycastFilterType.Blacklist
params.FilterDescendantsInstances = {char}
params.IgnoreWater = true
local humanoidRoot = char:WaitForChild("HumanoidRootPart")
local xRange = 0.95
local yRange = 6.05
local zRange = 0.475
local hitParts = {}
while true do
local origins =
{ humanoidRoot.Position,
humanoidRoot.CFrame.RightVector*xRange, humanoidRoot.CFrame.RightVector*-xRange,
humanoidRoot.CFrame.LookVector*zRange, humanoidRoot.CFrame.LookVector*-zRange,
}
for _,v in pairs(origins) do
local ray = workspace:Raycast(v, (v - Vector3.new(0,1000,0)).unit * yRange, params)
-- ==== VISUAL DEBUGGING ==== --
local display = Instance.new("Part")
display.Anchored = true
display.CanCollide = false
display.Position = v
display.Size = Vector3.new(1,1,1)
display.Parent = workspace
display.Name = "Display"
local display2 = display:Clone()
display2.Position = v-Vector3.new(0,yRange,0)
display2.Color = Color3.fromRGB(255,0,0)
display2.Parent = workspace
display2.Name = "Display2"
game:GetService("Debris"):AddItem(display,1.5)
game:GetService("Debris"):AddItem(display2,1.5)
-- ==== VISUAL DEBUGGING END ==== --
if ray then
print(tostring(ray.Instance)) -- Output: Baseplate (tested in a new baseplate)
table.insert(hitParts,ray.Instance)
end
end
wait(5)
end
end)
end)
Some mentions here:
local ray = workspace:Raycast(v, (v - Vector3.new(0,1000,0)).unit * yRange, params)
More specifically this:
(v - Vector3.new(0,1000,0)).unit -- the direction, straight down
multiplied by the range of the ray:
(v - Vector3.new(0,1000,0)).unit * yRange -- the direction, and magnitude of the ray
If you have any further questions, you can feel free to contact me on Discord (phxntxsmic#2021)
EDIT
In addition to everything I have said, JustinWe12 is correct.
"To run a module script, you have to require() from a local script or a server script and fire it from there."
To run a module script, you have to require() from a local script or a server script and fire it from there.