trade.py

import spess.client
import spess.models

def extract_cycle(c, ship):
    ext = ship.extract_resources().extraction.yield_
    print(f'got {ext.units} units of {ext.symbol}')
    ship.wait()
    if ext.symbol != 'IRON_ORE':
        ship.jettison_cargo(ext.symbol, ext.units)
    print(ship.cargo)

def extract_loop(c, ship):
    while ship.cargo.units < ship.cargo.capacity:
        print('-- mining', datetime.datetime.now().isoformat())
        extract_cycle(c, ship)

def contract(c):
    m = c.ship('AGRIF-3')
    cont, = c.contracts()
    contwp = c.waypoint(m.nav, cont.terms.deliver[0].destinationSymbol)
    roid, = c.system_waypoints(m.nav, type='ENGINEERED_ASTEROID')

    while True:
        # fly to asteroid
        if m.nav.waypointSymbol != roid.symbol:
            print('flying to asteroid')
            m.navigate(roid)
            m.wait()

        # do the mining loop
        extract_loop(c, m)

        # fly to dropoff
        if m.nav.waypointSymbol != contwp.symbol:
            print('flying to dropoff')
            m.navigate(contwp)
            m.wait()

        # dock to refuel and dropoff
        amt = cont.terms.deliver[0].unitsRequired - cont.terms.deliver[0].unitsFulfilled
        print(f'{amt} remains in contract')
        amt = min(amt, 15)
        print(f'dropping off {omt}')
        m.dock()
        m.refuel()
        cont.deliver(m, 'IRON_ORE', amt)
        m.orbit()

        # break if we didn't drop off a full load
        if amt < 15:
            break
    print('done!')