Script to update rectangular regions on moonplace.io

moonplace_imgupdate.py

import base64
import json
import web3
from PIL import Image
import base64
from io import BytesIO


# Setup web3 things
nova_provider = web3.Web3(web3.HTTPProvider('https://nova.arbitrum.io/rpc'))
chain_id = 42170
moonplace_address = '0x934095513c1ff89592A4b8490e263da7a6a4CEAc'
with open('moonplace.json') as f:
    abi = json.load(f)
moonplace = nova_provider.eth.contract(address=moonplace_address, abi=abi)
# Your private key exported from Metamask (if you want to send transactions)
pk = "YOUR PRIVATE KEY HERE IF YOU ARE USING WEB3 TO UPDATE TILES"


data = []
txtout, b64out = '', ''
x,y=0,0
# This section defines the upper left corner of the image by tile position
xpos = 41   # X position of upper left corner of image
ypos = 82    # Y position of upper left corner of image
# This section defines the size of the image in tiles
xsize = 7   # X size of image in tiles
ysize = 4   # Y size of image in tiles
with Image.open("image.png") as im:
    ypos_init = ypos
    while x < xsize:
        while y < ysize:
            img = im.crop((x*10, y*10, (x+1)*10, (y+1)*10))
            buffered = BytesIO()
            img.save(buffered, format="PNG")
            #img.save(f"imgout{xpos}{ypos}.png", format="PNG")  # Uncomment this line to save the images to disk
            img_str = str(base64.b64encode(buffered.getvalue()), 'utf-8')
            tmp_dict = {
                "title": "Moon Pixel Map",
                "description": f"Block: ({xpos}, {ypos})",
                "image": f"data:image/png;base64,{img_str}"
            }
            txtout += json.dumps(tmp_dict)+'\n'
            base64_str = 'data:application/json;base64,'+str(base64.b64encode(json.dumps(tmp_dict).encode('utf-8')), 'utf-8')
            b64out += base64_str+'\n'
            data.append([xpos, ypos, base64_str])
            y += 1
            ypos += 1
        y = 0
        ypos = ypos_init
        x += 1
        xpos += 1
with open('txtout.txt', 'w') as f:
    f.write(txtout)
with open('b64out.txt', 'w') as f:
    f.write(b64out)


# This section makes txs to update the moonplace contract
# Comment this section out or delete it if you don't want to send the transactions
for i in data:
    print(f"*********************************************\n Processing x: {i[0]}, y: {i[1]}")
    tx = moonplace.functions.update(i[0], i[1], i[2]).buildTransaction({
        'chainId': chain_id,
        'gas': 1000000,
        'gasPrice': nova_provider.toWei('0.0000000001', 'ether'),
        'nonce': nova_provider.eth.getTransactionCount(nova_provider.eth.account.from_key(pk).address)
    })
    signed_tx = nova_provider.eth.account.sign_transaction(tx, private_key=pk)
    tx_hash = nova_provider.eth.sendRawTransaction(signed_tx.rawTransaction)
    print(nova_provider.toHex(tx_hash))
    tx_receipt = nova_provider.eth.waitForTransactionReceipt(tx_hash)
    print(tx_receipt)