YOUR OFFICIAL RASPBERRY PI MAGAZINE

Feature
The first step in hacking
Pi is to program it in Python
CODE:
Teleport
here are a few ways to
program Minecraft on
Raspberry Pi, and we’ll be
talking about those in the rest of
the feature. The most popular way
to mod it, however, is by using the
included Python library. If you’ve
ever used Python, the syntax and
logic of the code remains the same,
only now there are functions that
link directly into Minecraft!
As we’re programming in
Python, we can also connect
Minecraft to the real world via
the GPIO pins or any attached
hardware that works with Python,
such as the Pi Camera or Sense
HAT. Here’s how to get started...
USAGE:
.setPos(x,y,z)
EXAMPLE:
mc.player.
setPos(0.0,
0.0, 0.0) will
teleport the
player to the
centre of the map
CODE:
Block type
USAGE:
getBlock(x,y,z)
EXAMPLE:
block = mc.
getBlock(0,0,0)
sets variable block
as the type of block
at the centre of
the map
mc.player.setPos(10.0,12.0,5.0)
mc.player.setPos(10.0,12.0,-5.0)
Using the same coordinate system of X, Y
and Z from getPos(), you can move the
player around the map as you see fit. You’ll
have to figure out the coordinates you want
to move to via testing, or by using getPos()
at the desired spot.
print mc.getBlock(10.0,3.0,-5.0)
3
print mc.getBlack(5,-1,7)
12
Each block type has a name and
identification number for it; for example,
AIR has the ID of 0. Using the getBlock
function, you can figure out what kind of
block is at certain coordinates: this is useful
for figuring out where a player is in your
code if you need to trigger a certain event.
CODE:
Location
USAGE:
getPos()
from mcpi.minecraft import Minecraft
mc = Minecraft.create()
print mc.player.getPos()
Vec3(5.67561,0.0,6.55693)
CODE:
Create a block
USAGE:
.setBlock(x,y,z)
mc.setBlock(10.0,0.0,-1.0, block.
OBSIDIAN.id)
mc.setBlock(10.0,0.0,-2.0, block.
OBSIDIAN.id)
mc.setBlock(9.0,2.0,-2.0, block.ICE.id)
EXAMPLE:
position =
mc.player.
getPos() will give
a list of coordinates
for the player’s
current position
This returns the player’s position in the world
as three numbers. The first number on the
X-axis indicates how far forward or back
the player is from the centre. The second
number is how far left or right they are, or
the Y-axis. The last number, the Z-axis, is the
height in blocks from ground level.
EXAMPLE:
mc.setBlock(0,0,0,
block.OBSIDIAN.id)
will create a block
of obsidian in the
centre of the map
Create any kind of block wherever you want
it in the world. You can see how this works in
CrazySqueak’s code on the page before this,
as he has created lava, water, and empty
spaces as part of the Natural Disasters
program. You can also create a chunk of
blocks with a range of coordinates.
raspberrypi.org/magpi
January 2016
17