Coin Factory

Part of the Roblox Game Scripting section of Coddy's Lua journey. Lesson 8 of 24.

A table holds a list of values in curly braces, and a for loop can visit each one:

local heights = { 4, 8, 12 }
for _, h in heights do
	print(h)
end

This prints 4, 8 and 12. Each round, h holds the next value. The _ is the position in the list, which this loop does not need.

Combine a table with a function and you get a factory: one call per value.

local function makeTree(x)
	-- build a tree at x
end
for _, x in { -10, 0, 10 } do
	makeTree(x)
end

CanCollide = false lets players walk through a part; it is still there and still visible.

A Folder groups parts, like workspace.Coins. Setting a part's Parent to a folder puts it in the world inside that folder.

Challenge

Easy

Fill in makeCoin(z) so it makes one coin, then call it for every number in spots.

Each coin is a Part that:

is named Coin
is a ball (Enum.PartType.Ball), size 2, 2, 2, and gold: Color3.fromRGB(255, 200, 40)
lets players walk through it (CanCollide is false) and does not fall
is at Position 0, 3, z
goes in the workspace.Coins folder

The coins do nothing yet. You will make them collectable in a later lesson.

Try it yourself

local spots = { 12, 6, 0, -6, -12 }

local function makeCoin(z)
	-- Make a gold ball named Coin at (0, 3, z)
	-- and put it in workspace.Coins
end

-- Call makeCoin for every spot

Test yourself

This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Roblox Game Scripting

1Scripts and Parts

Hello, Roblox Paint a Part Stretch the Bridge Build a Platform

4Game Mechanics

Speed Pad Jump Pad Click Me The Button Door Moving Platform Checkpoints Finish Line

2Loops and Functions

Row of Pillars Staircase Builder Tower BuilderCoin FactoryBlinking Light Vanishing Bridge

5Your First Game

Your First Obby

3Events and Players

Touch Pad Lava Floor Leaderstats Who Touched It?Coin Collector Coin Door

Practice on your own: Online Lua compiler