#![feature(vec_into_raw_parts)]
#![no_std]

use cultivar_common::{prelude::*, std_bis::*};
//use cultivar_runtime_interface::prelude::*;
use parity_scale_codec::Decode;

#[global_allocator]
static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
//static ALLOC: dlmalloc::GlobalDlmalloc = dlmalloc::GlobalDlmalloc;

/// # Safety
/// The pointer given in argument must be valid, or undefined data will be read.
#[export_name = "run"]
pub unsafe fn run(ptr: *mut u8, len: usize) -> u64 {
	let data = unsafe { Vec::from_raw_parts(ptr, len, len) };

	let sim_id = SimId::decode(&mut &data[..]).unwrap();

	run_inner(sim_id);

	let (ptr, len, _) = data.into_raw_parts();
	(len as u64) << 32 | ptr as u64
}

fn run_inner(sim_id: SimId) {
	say(&format!("{:?}", walk(sim_id, EntityId(0), Direction::East)));
}