Minecraft Building Miscellanea

We’re doing some more computer science workshops demonstrating building stuff in minecraft on the Raspberry Pi. Here are few of the examples.

Trampoline

Stand on some grass and bounce!


import mcpi.minecraft as minecraft
import mcpi.block as block

world = minecraft.Minecraft.create()

while True:

    position = world.player.getTilePos()
    block = world.getBlock(position.x, position.y - 1, position.z)
    
    # standing on grass?
    if block == block.GRASS:
        world.player.setPos(position.x, position.y + 20, position.z)



Treasure Hunt


import mcpi.minecraft as minecraft
import mcpi.block as block
import random
import time

world = minecraft.Minecraft.create()

world.postToChat("I have hidden a diamond...")

x = 0
y = 0
z = 0

# random position?
# x = random.randrange(-50, 50)
# y = random.randrange(0, 20)
# z = random.randrange(-50, 50)

world.setBlock(x, y, z, block.DIAMOND)
world.camera.setFixed()

world.camera.setPos(x, y + 5, z)
time.sleep(10)

world.postToChat("Treasure hunt!")
world.camera.setNormal() 
# or 
# world.camera.setFollow()


Frozen


import mcpi.minecraft as minecraft
import mcpi.block as block
import time

world = minecraft.Minecraft.create()

while True:
    time.sleep(0.2)

    x, y, z = world.player.getPos()
    # change the block type ?
    world.setBlock(x, y - 1, z, block.ICE)

    # block_below = world.getBlock(x, y - 1, z)
    # if block_below == block.WATER:
    #   world.setBlock(x, y - 1, z, block.ICE)


Pyramid


import mcpi.minecraft as minecraft
import mcpi.block as block
import time
import math


def build_pyramid(x, y, z, width, material):
    if width % 2 == 0:
        width = width + 1

    height = int((width + 1) / 2)     
    layer_width = int(math.floor(width/2))

    world.setBlocks(x - layer_width - 2, y - 1, z - layer_width - 2, x + layer_width + 2, y - 1, z + layer_width + 2, block.DIRT)

    for level in range(y, y + height):
       world.setBlocks(x - layer_width, level, z - layer_width, x + layer_width, level, z + layer_width, material)
       layer_width = layer_width - 1


world = minecraft.Minecraft.create()

# Customise with different block types
x = 0
y = 1
z = 0
width = 20

build_pyramid(x, y, z, width, block.ICE) 


Castle


import mcpi.minecraft as minecraft
import mcpi.block as block
import time
import math

def build_tower(x, y, z, width, height, material):
    # tower
    world.setBlocks(x, y, z, x + width, y + height, z + width, material)

    # create crennelations
    for dx in range(width + 1):
            for dz in range(width + 1):
                    if dx % 2 == 0 and dz % 2 == 0:
                        world.setBlock(x + dx, y + height + 1, z + dz, material)

    # carve out top of tower
    world.setBlocks(x + 1, y + height, z + 1, x + width - 1, y + height + 1, z + width - 1, block.AIR)
    world.setBlocks(x + 2, y + height - 1, z + 2, x + width - 2, y + height + 1, z + width - 2, block.AIR)


def build_wall(x, y, z, length, height, material, plane):
        
    if plane == "x":
        # wall
        world.setBlocks(x, y, z, x + length, y + height, z, material)

        # create crennelations
        for i in range(length + 2):
            if i % 2 == 0:
                world.setBlock(x + i, y + height, z, block.AIR)

    if plane == "z":
        # wall
        world.setBlocks(x, y, z, x, y + height, z + length, material)
        
        # crennelations
        for i in range(length + 2):
            if i % 2 == 0:
                world.setBlock(x, y + height, z + i, block.AIR)


def build_castle(x, y, z, length, height, material):
    build_wall(x, y, z, length, height, material, "x")
    time.sleep(1)
    build_wall(x, y, z, length, height, material, "z")
    time.sleep(1)
    build_wall(x, y, z + length, length, height, material, "x")
    time.sleep(1)
    build_wall(x + length, y, z, length, height, material, "z")
    time.sleep(1)

    tower_width = int(length /5)
    if tower_width % 2 > 0:
        tower_width = tower_width + 1

    tower_height = int(height * 1.75)
    build_tower(x, y, z, tower_width, tower_height, material)
    time.sleep(1)
    build_tower(x, y, z + length - tower_width, tower_width, tower_height, material)
    time.sleep(1)
    build_tower(x + length - tower_width, y, z, tower_width, tower_height, material)
    time.sleep(1)
    build_tower(x + length - tower_width, y, z + length - tower_width, tower_width, tower_height, material)

def create_moat(x, y, z, width, depth, island):
    world.setBlocks(x - width, y - depth, z - width, x + island + width, y, z + island + width, block.WATER)
    world.setBlock(x, y - depth, z, x + island, y, z + island, block.GRASS)

world = minecraft.Minecraft.create()

x = z = 10
y = 0

moat_width = 3
moat_depth = 5

island_size = 60
castle_size = island_size - 2
wall_height = 10

create_moat(x, y, z, moat_width, moat_depth, island_size)
build_castle(x + 1, y, z + 1, castle_size, wall_height, block.STONE)




Clearing Changes


import mcpi.minecraft as minecraft
import mcpi.block as block

world = minecraft.Minecraft.create()

# clear all buildings
world.postToChat("blanking...")
world.setBlocks(-128, 0, -128, 128, 60, 128, block.AIR)
world.setBlocks(-128, -10, -128, 128, -1, 128, block.DIRT)
world.setBlocks(-128, 0, -128, 128, 0, 128, block.GRASS)

# world.player.setPos(0, 1, 0)
world.postToChat("blanked.")