Python script for MCPI to create a 2 dimensional 8 color blocks based on a Python array.

icon_builder.py

import sys
import mcpi.block as block
from mcpi.minecraft import Minecraft
from math import *

# Data structure representing icon as a 2D grid
# Copy the generated array from the BlockCraft chat
image = [[7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7],
 [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7],
 [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7],
 [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 2, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7],
 [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 0, 0, 2, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7],
 [7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 0, 0, 2, 0, 1, 6, 7, 7, 7, 7, 7, 7, 7, 7],
 [7, 7, 7, 7, 7, 7, 7, 7, 5, 0, 0, 4, 7, 3, 0, 1, 6, 7, 7, 7, 7, 7, 7, 7],
 [7, 7, 7, 7, 7, 7, 7, 6, 0, 0, 3, 5, 5, 5, 2, 0, 1, 7, 7, 7, 7, 7, 7, 7],
 [7, 7, 7, 7, 7, 7, 6, 0, 0, 4, 6, 1, 2, 2, 6, 2, 0, 1, 7, 7, 7, 7, 7, 7],
 [7, 7, 7, 7, 7, 5, 0, 0, 3, 7, 6, 3, 5, 3, 7, 6, 2, 0, 1, 6, 7, 7, 7, 7],
 [7, 7, 7, 7, 5, 0, 0, 3, 7, 7, 7, 4, 4, 4, 7, 7, 6, 2, 0, 1, 7, 7, 7, 7],
 [7, 7, 7, 4, 0, 0, 4, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 0, 1, 6, 7, 7],
 [7, 7, 7, 3, 0, 2, 3, 4, 3, 5, 7, 7, 7, 7, 7, 4, 3, 4, 3, 1, 0, 5, 7, 7],
 [7, 7, 7, 7, 5, 3, 2, 1, 1, 4, 5, 2, 3, 2, 6, 2, 2, 1, 3, 3, 6, 7, 7, 7],
 [7, 7, 7, 7, 6, 4, 4, 3, 3, 4, 4, 2, 3, 2, 5, 3, 4, 3, 5, 3, 7, 7, 7, 7],
 [7, 7, 7, 7, 6, 4, 4, 3, 3, 4, 4, 5, 6, 4, 5, 3, 3, 2, 5, 3, 7, 7, 7, 7],
 [7, 7, 7, 5, 5, 4, 4, 3, 3, 4, 4, 5, 7, 3, 5, 3, 3, 2, 4, 3, 5, 5, 7, 7],
 [7, 7, 6, 4, 4, 2, 4, 4, 4, 5, 4, 5, 7, 3, 5, 4, 4, 4, 4, 3, 5, 4, 7, 7],
 [7, 7, 4, 2, 3, 3, 6, 6, 6, 7, 3, 5, 7, 4, 4, 7, 6, 6, 5, 2, 3, 2, 5, 7],
 [7, 6, 3, 2, 1, 3, 5, 5, 4, 5, 3, 5, 6, 4, 4, 5, 4, 5, 5, 2, 1, 2, 3, 7],
 [7, 6, 2, 0, 0, 1, 2, 1, 1, 2, 4, 5, 5, 5, 4, 1, 1, 1, 2, 0, 0, 0, 3, 7],
 [7, 7, 5, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 5, 6, 7],
 [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7],
 [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7]]

address="localhost"
mc = Minecraft.create(address,4711)
gradient_blocks = {
    7: 0,    # Air Block for white
    6: 82,   # Clay for light gray
    5: 4,    # Cobblestone for gray
    4: 1,    # Stone for medium gray
    3: 98,   # Stone Bricks for dark gray
    2: 112,  # Nether Brick for darker gray
    1: 173,  # Coal Block for nearly black
    0: 49    # Obsidian for black
}

def put(x, y, z, block_id):
    # Placeholder function to simulate placing a block in Minecraft.
    # Replace this with the actual command to place a block in your Minecraft setup.
    print(f"Placing block at ({x}, {y}, {z}) with block ID {block_id}")
    mc.setBlock(x, y, z, block_id)

def build_image_from_data(center_x, center_y, center_z, data):
    height = len(data)
    width = len(data[0])

    for y in range(height):
        for x in range(width):
            # Convert grid coordinates to Minecraft world coordinates
            world_x = center_x + x - width // 2
            world_y = center_y - y + height // 2  # In Minecraft, the Y coordinate is height
            world_z = center_z
            put(world_x, world_y, world_z, gradient_blocks[data[y][x]])
            
pos = mc.player.getPos()
center_x, center_y, center_z = map(floor, [pos.x, pos.y, pos.z])  # Starting coordinates for the "G"
build_image_from_data(center_x, center_y, center_z, image)

read_image_24x24_convert_to_array.py

from PIL import Image

def pixel_to_gray_scale_value(pixel):
    """Convert a pixel to grayscale using the luminosity method."""
    # If the image is in RGBA, pixel will be a tuple of 4 values (R, G, B, A).
    # If the image is in RGB, pixel will be a tuple of 3 values (R, G, B).
    # We convert it to grayscale assuming RGB or RGBA:
    if len(pixel) == 4:  # RGBA
        r, g, b, _ = pixel
    else:  # RGB
        r, g, b = pixel
    # Luminosity method:
    return int(0.3 * r + 0.59 * g + 0.11 * b)

def map_gray_scale_to_range(value):
    """Map grayscale value (0-255) to 0-7 scale."""
    # Divide the 256 grayscale levels into 8 segments (0-7).
    # Adjust the range as needed to map grayscale values to 0-7.
    return value // 32

def convert_image_to_array(filename):
    # Load the image
    img = Image.open(filename)
    img_resized = img.resize((24, 24), Image.LANCZOS)
    # Convert the image to RGB if it's in a different mode (e.g., palette)
    if img_resized.mode != 'RGB' and img_resized.mode != 'RGBA':
        img_resized = img_resized.convert('RGB')
    width, height = img_resized.size
    # Initialize the 2D array
    array = [[0 for _ in range(width)] for _ in range(height)]

    # Iterate through each pixel
    for y in range(height):
        for x in range(width):
            # Get the pixel value
            pixel = img_resized.getpixel((x, y))
            gray_value = pixel_to_gray_scale_value(pixel)
            mapped_value = map_gray_scale_to_range(gray_value)
            # Assign the mapped value to the array
            array[y][x] = mapped_value

    return array

# Example usage:
filename = "c:/temp/house_b.png"
array = convert_image_to_array(filename)
print(array)