42 lines
1.2 KiB
Python
42 lines
1.2 KiB
Python
from __future__ import annotations
|
|
|
|
from typing import TYPE_CHECKING
|
|
|
|
if TYPE_CHECKING:
|
|
from engine import Engine
|
|
from entity import Entity
|
|
|
|
|
|
class Action:
|
|
def perform(self, engine: Engine, entity: Entity) -> None:
|
|
"""Perform this action with the objects needed to determine its scope
|
|
|
|
'engine' is the scope this action is being perfrmed in.
|
|
|
|
'entity is the object performing the action.
|
|
|
|
This method must be overridden by Action subclasses
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
class EscapeAction(Action):
|
|
def perform(self, engine: Engine, entity: Entity) -> None:
|
|
raise SystemExit()
|
|
|
|
class MovementAction(Action):
|
|
def __init__(self, dx: int, dy: int):
|
|
super().__init__()
|
|
|
|
self.dx = dx
|
|
self.dy = dy
|
|
|
|
def perform(self, engine: Engine, entity: Entity) -> None:
|
|
dest_x = entity.x + self.dx
|
|
dest_y = entity.y + self.dy
|
|
|
|
if not engine.game_map.in_bounds(dest_x, dest_y):
|
|
return # Destination is out of bounds.
|
|
if not engine.game_map.tiles["walkable"][dest_x, dest_y]:
|
|
return # Destination is blocked by a tile
|
|
|
|
entity.move(self.dx, self.dy) |