Blocks cant be built outside the given space

[EekPlayz09 (PVP_ImUnclePeteInBed)]

Im making a build system and i want it so you cant build outside a the given space, i dont know how to do this (i want to be able to check if the block is within this space befor it is placed)

[xjust1nu (ジャスティン)]

Heres and example:

local minX = -50
local maxX = 50
local minY = 0
local maxY = 30
local minZ = -50
local maxZ = 50

local function isPositionWithinBuildArea(position)
    return position.x >= minX and position.x <= maxX and
           position.y >= minY and position.y <= maxY and
           position.z >= minZ and position.z <= maxZ
end
local function handleBlockPlacement(player, block, position)
    if isPositionWithinBuildArea(position) then        block.Parent = workspace
    else
        warn("Cannot place block outside the valid build area.")
    end
end

local player = game.Players.LocalPlayer
local block = Instance.new("Part")
block.Size = Vector3.new(1, 1, 1)
local position = Vector3.new(10, 5, 10)
handleBlockPlacement(player, block, position)

Change want you want to change, and make sure everything is customized to your needs.

[EekPlayz09 (PVP_ImUnclePeteInBed)]

it always prints, Cannot place block outside the valid build area.

local function isPositionWithinBuildArea(position)
	return position.x >= game.Workspace.End.Position.X and position.x <= game.Workspace.Start.Position.X and
		position.y >= game.Workspace.End.Position.Y and position.y <= game.Workspace.Start.Position.Y and
		position.z >= game.Workspace.End.Position.Z and position.z <= game.Workspace.Start.Position.Z
end

[EekPlayz09 (PVP_ImUnclePeteInBed)]

Fixed it,
here is fixed code

local function isPositionWithinBuildArea(position)
	
	local XTable = {game.Workspace.End.Position.X, game.Workspace.Start.Position.X}
	local YTable = {game.Workspace.End.Position.Y, game.Workspace.Start.Position.Y}
	local ZTable = {game.Workspace.End.Position.Z, game.Workspace.Start.Position.Z}
	
	local minX = math.min(table.unpack(XTable))
	local minY = math.min(table.unpack(YTable))
	local minZ = math.min(table.unpack(ZTable))
	local maxX = math.max(table.unpack(XTable))
	local maxY = math.max(table.unpack(YTable))
	local maxZ = math.max(table.unpack(ZTable))
	
	return position.x >= minX and position.x <= maxX and
		position.y >= minY and position.y <= maxY and
		position.z >= minZ and position.z <= maxZ
end

[xjust1nu (ジャスティン)]

Happy to help. Feel free to reach out to me if you have anymore questions.