minecraft python adventures 2024

2024_preparing_minecraft_python_for_marin_ohanlon_adventures_in_minecraft_2nd_edition.sh

# some notes on installing minecraft to follow along the book.
# raspberryJuice is not updated anymore (stops at minecraft 1.12 or something)
# I got JuicyRaspberryPi  instead.
# installation instructions here:
# https://github.com/wensheng/JuicyRaspberryPie/blob/master/doc/using-api-spigot.md

# steps that worked for me:  


# Installed Java SDK 17 (exactly 17, not more, not less).  Got it from adoptium:
#https://adoptium.net/fr/

# create a directory called "minecraft_py" somewhere
# inside that directory, create directories  "build" and "server".

# get the spigot buildtools latest version here:
#  https://hub.spigotmc.org/jenkins/job/BuildTools/
# save BuildTools.jar  in   minecraft_py/build

# start a powershell terminal at   "minecraft_py/build" by :
#  -navigating to that directory in windows explorer, 
# - then "shift-right click" somewhere empty ,
# - choose "start new powershell terminal here"

#run this in the powershell terminal, replacing "simon"  in JAVA_HOME with your username 
$env:JAVA_HOME = "C:\Users\simon\AppData\Local\Programs\Eclipse Adoptium\jdk-17.0.13.11-hotspot"
$env:PATH = "$env:JAVA_HOME\bin;$env:PATH"
java -jar BuildTools.jar --rev 1.18.1

# this will generate a bunch of files, including something called spigot-1.18.1.jar  
# copy that file to minecraft_py/server  and rename it spigot.jar

# also create file eula.txt in minecraft_py/server and add the following content in it:
eula=true

# also create file run.bat ine minecraft_py/server and add the following content in it:
@echo off
set "JAVA_HOME=C:\Users\simon\AppData\Local\Programs\Eclipse Adoptium\jdk-17.0.13.11-hotspot"
set "PATH=%JAVA_HOME%\bin;%PATH%"
java -Xms8G -Xmx8G  -jar spigot.jar
pause

# download juicyraspberrypi for for spigot 1.18.1 from releases here (juicyraspberrypie-1.18.1.jar)
#https://github.com/wensheng/JuicyRaspberryPie/releases/tag/v0.3
# then copy juicyraspberrypie-1.18.1.jar to minecraft_py/server/plugins



# start the spigot server by double-clikcing run.bat


# start the minecraft launcher
# create a new installation
# select release 1.18.1

# start a new minecratft game using the installation you just made
# pick multiplayer, "localhost"
# you'Re in!!

# in server terminal type
op YOURUSERNAME

# in minecraft chat type
/gamemode creative

#  in game press F3 to show location,  facing east

from mcpi.minecraft import minecraft
mc = minecraft.create()
pos = mc.player.getTilePos()
x,y,z = pos.x, pos.y, pos.z

mc.spawnEntity( x+2, y, z , "donkey")

panda = mc.spawnEntity( x+2, y, z , "panda")
panda.setPos(x+2,y,z+10)

#  rainbow.py
import mcpi.minecraft as minecraft
import mcpi.block as block
from math import *

colors = [14, 1, 4, 5, 3, 11, 10]

mc = minecraft.Minecraft.create()
height = 60

mc.setBlocks(-64, 0, 0, 64, height + len(colors), 0, 0)
for x in range(0, 128):
    for colourindex in range(0, len(colors)):
        y = sin((x / 128.0) * pi) * height + colourindex
        mc.setBlock(x - 64, y, 0, block.WOOL.id, colors[len(colors) - 1 - colourindex])

# to disable pausing on loss of focus: 
hold f3, press p