Dan Albert 507b217065 Clean up custom loadout interface.
Wraps the pydcs data in a real type so we don't need to spread the
reflection all over.
2021-01-04 15:13:40 -08:00

81 lines
2.4 KiB
Python

from __future__ import annotations
import inspect
from dataclasses import dataclass
from typing import Dict, Iterator, Set, Tuple, Type, Union, cast
from dcs.unitgroup import FlyingGroup
from dcs.unittype import FlyingType
PydcsWeapon = Dict[str, Union[int, str]]
PydcsWeaponAssignment = Tuple[int, PydcsWeapon]
@dataclass(frozen=True)
class Weapon:
"""Wraps a pydcs weapon dict in a hashable type."""
cls_id: str
name: str
weight: int
@property
def as_pydcs(self) -> PydcsWeapon:
return {
"clsid": self.cls_id,
"name": self.name,
"weight": self.weight,
}
@classmethod
def from_pydcs(cls, weapon_data: PydcsWeapon) -> Weapon:
return cls(
cast(str, weapon_data["clsid"]),
cast(str, weapon_data["name"]),
cast(int, weapon_data["weight"])
)
@dataclass(frozen=True)
class Pylon:
number: int
allowed: Set[Weapon]
def can_equip(self, weapon: Weapon) -> bool:
return weapon in self.allowed
def equip(self, group: FlyingGroup, weapon: Weapon) -> None:
if not self.can_equip(weapon):
raise ValueError(f"Pylon {self.number} cannot equip {weapon.name}")
group.load_pylon(self.make_pydcs_assignment(weapon), self.number)
def make_pydcs_assignment(self, weapon: Weapon) -> PydcsWeaponAssignment:
return self.number, weapon.as_pydcs
@classmethod
def for_aircraft(cls, aircraft: Type[FlyingType], number: int) -> Pylon:
# In pydcs these are all arbitrary inner classes of the aircraft type.
# The only way to identify them is by their name.
pylons = [v for v in aircraft.__dict__.values() if
inspect.isclass(v) and v.__name__.startswith("Pylon")]
# And that Pylon class has members with irrelevant names that have
# values of (pylon number, allowed weapon).
allowed = set()
for pylon in pylons:
for key, value in pylon.__dict__.items():
if key.startswith("__"):
continue
pylon_number, weapon = value
if pylon_number != number:
continue
allowed.add(Weapon.from_pydcs(weapon))
return cls(number, allowed)
@classmethod
def iter_pylons(cls, aircraft: Type[FlyingType]) -> Iterator[Pylon]:
for pylon in sorted(list(aircraft.pylons)):
yield cls.for_aircraft(aircraft, pylon)