How to check if there is already something at certain position?

[scavengingbot]

hello,

so i’m making something were it would spawn random cubes on different positions without placing multiple at the same position.

now…
i don’t exactly know how to do this.
so let’s say you have:

local Position = Vector3.New(0,0,0)

and you spawn a cube on that position like this:

while true do
local Cube = Instance.New("Part")
Cube.Parent = workspace--If statement would begin here 
Cube.Position = Position
Task.Wait(3)--end here
end

Now let’s say you add an if then part in your code that says:

if then --statement not filled because i have to explain this yet
Position = Position + Vector3.New(32,0,0)
Cube.Position = Position
else
Cube.Position = Position
end

How do i check if there is a part already at that position (That’s why the statement is empty)
because if i can check it i can change the position with 32 (On X Axis) and else place a cube there.

Thanks In Advance!

[keremMCT (Pepsi_Cat)]

make a table with vector3 values called usedpositions or smth, and check if the random position is equal to any vector3. if it is, then make a repeat loop that changes the position until its not a value in the table. then, add that random vector3 to the table

[Maxiimized (Maximized)]

first off you need to keep track of every spawned cube, I will assume that all cubes spawned will be done by this script, and that no “pre spawned” cubes exist.

local spawnedCubes = {}

local function checkIfOccupied(position: Vector3): Boolean
	for _, cube in pairs(spawnedCubes) do
		if cube.Position == position then return true end -- return true if position is occupied.
	end
end

while true do
	if checkIfOccupied(Position) then
		-- code to run if position is already occupied.
	else
		--code to run if position is not already occupied.
	end
	task.wait(3)
end

I left some empty spaces because I’m confused as to what you want to do exactly, so I left it up to you.

[keremMCT (Pepsi_Cat)]

Dont put the cube itself, put its position, since the cube MOVES a few tiny studs while spawning

[Maxiimized (Maximized)]

my bad, I didn’t realize the cube was unanchored.

edited the script:

local spawnedCubePositions = {}

local function checkIfOccupied(position: Vector3): Boolean
	for _, cubePosition in pairs(spawnedCubes) do
		if cubePosition == position then return true end -- return true if position is occupied.
	end
end

while true do
	if checkIfOccupied(Position) then
		-- code to run if position is already occupied.
	else
		--code to run if position is not already occupied.
	end
	task.wait(3)
end

-- IMPORTANT: at cube creation, put it's position into the spawnedCubePositions table
-- table.Insert(spawnedCubePositions, [the position you used])