How can I prevent models from falling through the floor when they spawn?

[FLOOOPA_BEBRA6667775 (Onion)]

I tried to create a spawn from raycast, but the problem is still unsolved

Spawn Code:

`

local zone = game.Workspace.Spawns[math.random(1,2)]
local model = game.ReplicatedStorage.Brainrots:FindFirstChild(brainrot):Clone()
local infoTween = TweenInfo.new(1, Enum.EasingStyle.Cubic, Enum.EasingDirection.Out)
model.Parent = workspace
local x = zone.Position.X
local xS = zone.Size.X / 2
local y = zone.Position.Y + (zone.Size.Y / 2) + model.PrimaryPart.Size.Y
local z = zone.Position.Z
local zS = zone.Size.Z / 2
local EndPos = CFrame.new(math.random(math.min(x - xS), math.max(xS + x)), y, math.random(math.min(z - zS), math.max(zS + z)))
local StartPos = EndPos + Vector3.new(0,100,0)
local origin = StartPos.Position
local direction = StartPos.Position - Vector3.new(0,1000,0)
local ao = nil
local ray = workspace:Raycast(origin, direction)

if ray then
	print(ray.Position)
	ao = CFrame.new(ray.Position.X,ray.Position.Y,ray.Position.Z)
end

model.PrimaryPart.Anchored = true
model:PivotTo(StartPos)
local cV = Instance.new("CFrameValue")
cV.Value = model:GetPivot()
local t = game.TweenService:Create(cV, infoTween, {Value = ao})
t:Play()

cV.Changed:Connect(function()
	model:PivotTo(cV.Value)
end)

end

`

[athony2025 (heymar2025)]

you are using model:PivotTo() which puts the pivot of the model at the specified position. (which will position the whole model)

you want to position the pivot around the legs.

[happya_x (Happya)]

you can also just add model:GetExtentsSize().Y/2 to the target position

[simplygren (Gren)]

Hey, you should simply just add to the ray.Position.Y the Y size of the brainrot/2 as it is already halfway through the floor

Updated Bit:

ao = CFrame.new(ray.Position.X,ray.Position.Y+model.PrimaryPart.Size.Y/2,ray.Position.Z)

local zone = game.Workspace.Spawns[math.random(1,2)]
local model = game.ReplicatedStorage.Brainrots:FindFirstChild(brainrot):Clone()
local infoTween = TweenInfo.new(1, Enum.EasingStyle.Cubic, Enum.EasingDirection.Out)
model.Parent = workspace
local x = zone.Position.X
local xS = zone.Size.X / 2
local y = zone.Position.Y + (zone.Size.Y / 2) + model.PrimaryPart.Size.Y
local z = zone.Position.Z
local zS = zone.Size.Z / 2
local EndPos = CFrame.new(math.random(math.min(x - xS), math.max(xS + x)), y, math.random(math.min(z - zS), math.max(zS + z)))
local StartPos = EndPos + Vector3.new(0,100,0)
local origin = StartPos.Position
local direction = StartPos.Position - Vector3.new(0,1000,0)
local ao = nil
local ray = workspace:Raycast(origin, direction)

if ray then
	print(ray.Position)
	ao = CFrame.new(ray.Position.X,ray.Position.Y+model.PrimaryPart.Size.Y/2,ray.Position.Z)
end

model.PrimaryPart.Anchored = true
model:PivotTo(StartPos)
local cV = Instance.new("CFrameValue")
cV.Value = model:GetPivot()
local t = game.TweenService:Create(cV, infoTween, {Value = ao})
t:Play()

cV.Changed:Connect(function()
	model:PivotTo(cV.Value)
end)

[FLOOOPA_BEBRA6667775 (Onion)]

Thanks! Thats work but i should change HumanoidRootPart Position