dcs-retribution/gen/flights/closestairfields.py
Dan Albert 2ac818dcdd Convert to new unit APIs, remove old APIs.
There are probably plenty of raw ints around that never used the old
conversion APIs, but we'll just need to fix those when we see them.

Fixes https://github.com/Khopa/dcs_liberation/issues/558
2020-12-19 22:08:57 -08:00

53 lines
1.8 KiB
Python

"""Objective adjacency lists."""
from typing import Dict, Iterator, List, Optional
from game.theater import ConflictTheater, ControlPoint, MissionTarget
from game.utils import Distance
class ClosestAirfields:
"""Precalculates which control points are closes to the given target."""
def __init__(self, target: MissionTarget,
all_control_points: List[ControlPoint]) -> None:
self.target = target
self.closest_airfields: List[ControlPoint] = sorted(
all_control_points, key=lambda c: self.target.distance_to(c)
)
def airfields_within(self, distance: Distance) -> Iterator[ControlPoint]:
"""Iterates over all airfields within the given range of the target.
Note that this iterates over *all* airfields, not just friendly
airfields.
"""
for cp in self.closest_airfields:
if cp.distance_to(self.target) < distance.meters:
yield cp
else:
break
class ObjectiveDistanceCache:
theater: Optional[ConflictTheater] = None
closest_airfields: Dict[str, ClosestAirfields] = {}
@classmethod
def set_theater(cls, theater: ConflictTheater) -> None:
if cls.theater is not None:
cls.closest_airfields = {}
cls.theater = theater
@classmethod
def get_closest_airfields(cls, location: MissionTarget) -> ClosestAirfields:
if cls.theater is None:
raise RuntimeError(
"Call ObjectiveDistanceCache.set_theater before using"
)
if location.name not in cls.closest_airfields:
cls.closest_airfields[location.name] = ClosestAirfields(
location, cls.theater.controlpoints
)
return cls.closest_airfields[location.name]