How would i make spawned items area based?

Hey there, I'm new to scripting and would want to understand the following:

Script:

while true do
	wait(1)
local partadded = Instance.new("Part")
partadded.Name = "Block"
partadded.Parent = game.Workspace
	local x = math.random(-25, 25)
	local z = math.random(-25, 25)
	partadded.Position = Vector3.new(x,0,z)
end

currently its spawning at a random spot that I've defined but I'm wanting to know how i can make some sort of Spawn pad with an Offset position for each newly added Part.

Thanks!

There could be a lot of different ways to do this, but here's a simple one. I nested 2 for loops inside a while loop. So what this will do is create a part at (1,0,1), (1,0,2), (1,0,3), (2,0,1), etc. Until (3,0,3) and repeat. This is fairly flexible and very easy to understand.

I'd recommend adding a check to see if the previous block still exists in workplace though.

while true do
	for xx = 1, 3, 1 do
		for zz = 1, 3, 1 do
			wait(1)
			local partadded = Instance.new("Part")
			partadded.Name = "Block"
			partadded.Parent = game.Workspace
			partadded.Position = Vector3.new(xx,0,zz)
		end
	end
end

EDIT: This should do roughly what you're looking for.

local positions = {
	{['name'] = 'Part1', ['pos'] =  Vector3.new(1,0,1)},
	{['name'] = 'Part2', ['pos'] =  Vector3.new(1,0,2)},
	{['name'] = 'Part3', ['pos'] =  Vector3.new(3,0,3)},
	{['name'] = 'Part4', ['pos'] =  Vector3.new(4,0,2)},
	{['name'] = 'Part5', ['pos'] =  Vector3.new(5,0,3)},
}

while wait(3) do
	local rand = math.random(#positions)
	if not workspace:FindFirstChild(positions[rand]['name']) then
		local partadded = Instance.new("Part")
		partadded.Name = positions[rand]['name']
		partadded.Parent = workspace
		partadded.Position = positions[rand]['pos']
	end
end

local SPAWNPAD_POS = workspace.PARTNAMEHERE.Position
while true do
	wait(1)
	local partadded = Instance.new("Part")
	partadded.Name = "Block"
	partadded.Parent = game.Workspace
	local x = math.random(SPAWNPAD.POS.X - 25,SPAWNPAD.POS.X + 25)
	local y = math.random(SPAWNPAD.POS.Y,SPAWNPAD.POS.Y + 25)
	local z = math.random(SPAWNPAD.POS.Z - 25,SPAWNPAD.POS.Z + 25)
	partadded.Position = Vector3.new(x,y,z)
end