mirror of
https://github.com/dcs-liberation/dcs_liberation.git
synced 2025-11-10 14:22:26 +00:00
9ab3430cc4
This isn't related to the missiongenerator, and importing this file from some places (such as runway data) will cause a circular reference when importing the rest of the missiongenerator package.
102 lines
2.9 KiB
Python
102 lines
2.9 KiB
Python
from __future__ import annotations
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import json
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from collections.abc import Iterator
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from dataclasses import dataclass
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from enum import IntEnum, auto
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from pathlib import Path
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from typing import Optional, TYPE_CHECKING
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from game.radio.radios import RadioFrequency
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from game.radio.tacan import TacanBand, TacanChannel
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if TYPE_CHECKING:
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from game.theater import ConflictTheater
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BEACONS_RESOURCE_PATH = Path("resources/dcs/beacons")
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class BeaconType(IntEnum):
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BEACON_TYPE_NULL = auto()
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BEACON_TYPE_VOR = auto()
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BEACON_TYPE_DME = auto()
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BEACON_TYPE_VOR_DME = auto()
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BEACON_TYPE_TACAN = auto()
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BEACON_TYPE_VORTAC = auto()
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BEACON_TYPE_RSBN = auto()
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BEACON_TYPE_BROADCAST_STATION = auto()
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BEACON_TYPE_HOMER = auto()
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BEACON_TYPE_AIRPORT_HOMER = auto()
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BEACON_TYPE_AIRPORT_HOMER_WITH_MARKER = auto()
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BEACON_TYPE_ILS_FAR_HOMER = auto()
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BEACON_TYPE_ILS_NEAR_HOMER = auto()
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BEACON_TYPE_ILS_LOCALIZER = auto()
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BEACON_TYPE_ILS_GLIDESLOPE = auto()
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BEACON_TYPE_PRMG_LOCALIZER = auto()
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BEACON_TYPE_PRMG_GLIDESLOPE = auto()
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BEACON_TYPE_ICLS_LOCALIZER = auto()
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BEACON_TYPE_ICLS_GLIDESLOPE = auto()
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BEACON_TYPE_NAUTICAL_HOMER = auto()
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@dataclass(frozen=True)
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class Beacon:
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name: str
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callsign: str
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beacon_type: BeaconType
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hertz: int
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channel: Optional[int]
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@property
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def frequency(self) -> RadioFrequency:
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return RadioFrequency(self.hertz)
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@property
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def is_tacan(self) -> bool:
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return self.beacon_type in (
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BeaconType.BEACON_TYPE_VORTAC,
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BeaconType.BEACON_TYPE_TACAN,
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)
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@property
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def tacan_channel(self) -> TacanChannel:
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assert self.is_tacan
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assert self.channel is not None
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return TacanChannel(self.channel, TacanBand.X)
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class Beacons:
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_by_terrain: dict[str, dict[str, Beacon]] = {}
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@classmethod
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def _load_for_theater_if_needed(cls, theater: ConflictTheater) -> None:
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if theater.terrain.name in cls._by_terrain:
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return
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beacons_file = BEACONS_RESOURCE_PATH / f"{theater.terrain.name.lower()}.json"
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if not beacons_file.exists():
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raise RuntimeError(f"Beacon file {beacons_file.resolve()} is missing")
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beacons = {}
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for bid, beacon in json.loads(beacons_file.read_text()).items():
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beacons[bid] = Beacon(**beacon)
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cls._by_terrain[theater.terrain.name] = beacons
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@classmethod
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def _dict_for_theater(cls, theater: ConflictTheater) -> dict[str, Beacon]:
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cls._load_for_theater_if_needed(theater)
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return cls._by_terrain[theater.terrain.name]
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@classmethod
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def iter_theater(cls, theater: ConflictTheater) -> Iterator[Beacon]:
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yield from cls._dict_for_theater(theater).values()
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@classmethod
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def with_id(cls, beacon_id: str, theater: ConflictTheater) -> Beacon:
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return cls._dict_for_theater(theater)[beacon_id]
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