Minecraft - Hour of Code - REPEAT LOOPS

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I'm Lydia Winters, Mojang's brand director
and we made a little game called Minecraft.

My favorite thing to do in Minecraft is explore.
I love adventuring in caves and seeing what

I can find. As someone who isn't a programmer,
I'm really excited to go through the Minecraft

lessons and actually learn some coding myself.

The last level needed lots of moveForward(); blocks. It would be easier if we could just tell the computer to perform the move forward

command four or five times. Luckily for us,
computers are really good at repeating commands

with repeat loops. When building Minecraft,
we use repeat loops to place all the initial

materials for creating a new world. That's
thousands and thousands of blocks. We also

use loops in little ways, for example to make
Alex's feet move back and forth as she walks.

Repeat loops are a powerful part of programming.

Night is coming so in the next couple of levels,we're going to build a house to stay safe.
We're going to use the repeat block to do

this very easily. To build a wall of our house,
we can either tell Alex to move forward and

place planks four times or we can tell her
to move forward and place one plank, then

take this command and use the repeat block
to have her perform the action multiple times.

Now we'll click on the repeat block and tell
her how many times we want her to perform

this action. Now let's build our house before
night falls! Have fun.