going-rogue/erynrl/actions/action.py
Eryn Wells ae1c7f5ce2 Refactor events into their own package
Most of the existing actions are game actions (they control the player character)
so they live in actions.game. Eventually, there will be modules for different
kinds of actions that only apply to, e.g. modal UI.
2022-05-28 08:52:54 -07:00

45 lines
1.2 KiB
Python

# Eryn Wells <eryn@erynwells.me>
from typing import TYPE_CHECKING, Optional
from ..object import Actor
from .result import ActionResult
if TYPE_CHECKING:
from ..engine import Engine
class Action:
'''An action that an Entity should perform.'''
def __init__(self, actor: Optional[Actor] = None):
self.actor = actor
def perform(self, engine: 'Engine') -> ActionResult:
'''Perform this action.
Parameters
----------
engine : Engine
The game engine
Returns
-------
ActionResult
A result object reflecting how the action was handled, and what follow-up actions, if any, are needed to
complete the action.
'''
raise NotImplementedError()
def failure(self) -> ActionResult:
'''Create an ActionResult indicating failure with no follow-up'''
return ActionResult(self, success=False)
def success(self) -> ActionResult:
'''Create an ActionResult indicating success with no follow-up'''
return ActionResult(self, success=True)
def __str__(self) -> str:
return f'{self.__class__.__name__} for {self.actor!s}'
def __repr__(self):
return f'{self.__class__.__name__}({self.actor!r})'