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124 lines
3.3 KiB
Python
124 lines
3.3 KiB
Python
import itertools
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from typing import TextIO, Iterable, Tuple, Set
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from aoc2019.intcode import read_program, Computer
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def powerset(iterable: Iterable) -> Iterable[Tuple]:
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s = list(iterable)
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return itertools.chain.from_iterable(itertools.combinations(s, r) for r in range(len(s) + 1))
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def print_output(computer: Computer) -> str:
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output = ""
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while len(computer.output):
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output += chr(computer.get_output())
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print(output, end='')
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return output
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def load_save(save, computer: Computer):
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computer.pointer, computer.relative_base, computer.program = save
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def create_save(computer: Computer):
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return computer.pointer, computer.relative_base, computer.program.copy()
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def send_command(computer: Computer, command: str):
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for c in command:
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computer.send_input(ord(c))
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computer.send_input(10) # manually send newline
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def force(computer: Computer, direction: str, items: Set[str]):
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# First, drop everything
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for item in items:
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send_command(computer, f"drop {item}")
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holding = tuple()
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for combination in powerset(items):
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# drop everything we don't want to keep holding
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for item in holding:
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if item not in combination:
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send_command(computer, f"drop {item}")
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# pick up what we want to pick up
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for item in combination:
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if item not in holding:
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send_command(computer, f"take {item}")
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send_command(computer, direction)
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try:
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computer.run()
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print_output(computer)
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return True
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except IndexError:
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print_output(computer)
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holding = combination
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return False
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def part1(data: TextIO):
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print("This day must use a file as input as it requires the stdin for other things.")
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computer = Computer(read_program(data))
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items = set()
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saves = {}
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while True:
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try:
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computer.run()
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print_output(computer)
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print("detected a death, loading auto save...")
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load_save(saves['auto'], computer)
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print("Command?")
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except IndexError:
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pass
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print_output(computer)
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saves['auto'] = create_save(computer)
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try:
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command = input().strip()
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except EOFError:
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return "exiting"
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if command == "exit":
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return "exiting"
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elif command == "items":
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print(items)
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continue
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elif command.startswith("save "):
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save_name = command.removeprefix("save ")
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saves[save_name] = create_save(computer)
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print(f"Saved game state as {save_name}")
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continue
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elif command.startswith("load "):
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save_name = command.removeprefix("load ")
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load_save(saves[save_name], computer)
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print(f"Loaded game state from {save_name}")
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continue
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elif command.startswith("take "):
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items.add(command.removeprefix("take "))
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elif command.startswith("drop "):
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items.remove(command.removeprefix("drop "))
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elif command.startswith("force "):
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direction = command.removeprefix("force ")
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if force(computer, direction, items):
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return "success"
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continue
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send_command(computer, command)
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