fn upgrade(env: soroban_sdk::Env, new_wasm_hash: soroban_sdk::BytesN<32>)
fn get_chunk(env: soroban_sdk::Env, chunk_id: u32) -> Chunk
fn claim_pixel(
env: soroban_sdk::Env,
user: soroban_sdk::Address,
chunk_id: u32,
idx: u32,
colour: u32,
)
fn claim_pixels(
env: soroban_sdk::Env,
user: soroban_sdk::Address,
pixels: soroban_sdk::Vec,
)
fn create_chunk(env: soroban_sdk::Env) -> u32
fn __constructor(
env: soroban_sdk::Env,
admin: soroban_sdk::Address,
currency: soroban_sdk::Address,
)