Tower Builder
Part of the Roblox Game Scripting section of Coddy's Lua journey. Lesson 7 of 24.
A function is a named piece of code you can run whenever you need it. Values you pass in are called parameters:
local function greet(name)
print("Welcome, " .. name)
end
greet("Ava")
greet("Leo").. joins two strings, so "Welcome, " .. "Ava" is Welcome, Ava. The code prints Welcome, Ava and Welcome, Leo. Defining the function only stores it; each call, like greet("Ava"), runs its code with name set to what you passed.
A function can take several parameters, separated by commas, and use them anywhere inside, like in a Size:
local function makeWall(width, height)
local wall = Instance.new("Part")
wall.Size = Vector3.new(width, height, 1)
wall.Anchored = true
wall.Parent = workspace
end
makeWall(10, 6)makeWall(10, 6) sets width to 10 and height to 6, in that order.
A part grows equally up and down from its Position, so a part that is h tall stands on the ground (Y 0) when its center is at h / 2.
Challenge
EasyFinish makeTower(x, height) and use it three times.
- Set the tower's Size to
4wide,heighttall and4deep. - Set its Position so it stands on the ground at
x:Vector3.new(x, height / 2, 0). - Call it for three towers:
(-10, 6),(0, 12)and(10, 18).
Try it yourself
local function makeTower(x, height)
local tower = Instance.new("Part")
tower.Name = "Tower"
tower.Anchored = true
-- Size: 4 wide, height tall, 4 deep
-- Position: at x, standing on the ground (center at height / 2)
tower.Parent = workspace
end
makeTower(-10, 6)
Test yourselfThis lesson includes a short quiz. Start the lesson to answer it and track your progress.
All lessons in Roblox Game Scripting
2Loops and Functions
Row of PillarsStaircase BuilderTower BuilderCoin FactoryBlinking LightVanishing Bridge5Your First Game
Your First ObbyPractice on your own: Online Lua compiler