DCSOlympus/scripts/python/API/data_extractor.py
Pax1601 4bcb5936b4 feat: Add initial API implementation and databases
Introduces a new Python API module with supporting scripts for data extraction, data types, unit management, and utility functions. Adds JSON databases for aircraft, helicopters, ground units, navy units, and mods, as well as configuration and VSCode launch settings. This provides the foundation for interacting with and managing units, spawning, and logging within the application.
2025-08-05 17:26:24 +02:00

139 lines
4.5 KiB
Python

import struct
from typing import List
from data_types import LatLng, TACAN, Radio, GeneralSettings, Ammo, Contact, Offset
class DataExtractor:
def __init__(self, buffer: bytes):
self._seek_position = 0
self._buffer = buffer
self._length = len(buffer)
def set_seek_position(self, seek_position: int):
self._seek_position = seek_position
def get_seek_position(self) -> int:
return self._seek_position
def extract_bool(self) -> bool:
value = struct.unpack_from('<B', self._buffer, self._seek_position)[0]
self._seek_position += 1
return value > 0
def extract_uint8(self) -> int:
value = struct.unpack_from('<B', self._buffer, self._seek_position)[0]
self._seek_position += 1
return value
def extract_uint16(self) -> int:
value = struct.unpack_from('<H', self._buffer, self._seek_position)[0]
self._seek_position += 2
return value
def extract_uint32(self) -> int:
value = struct.unpack_from('<I', self._buffer, self._seek_position)[0]
self._seek_position += 4
return value
def extract_uint64(self) -> int:
value = struct.unpack_from('<Q', self._buffer, self._seek_position)[0]
self._seek_position += 8
return value
def extract_float64(self) -> float:
value = struct.unpack_from('<d', self._buffer, self._seek_position)[0]
self._seek_position += 8
return value
def extract_lat_lng(self) -> LatLng:
lat = self.extract_float64()
lng = self.extract_float64()
alt = self.extract_float64()
return LatLng(lat, lng, alt)
def extract_from_bitmask(self, bitmask: int, position: int) -> bool:
return ((bitmask >> position) & 1) > 0
def extract_string(self, length: int = None) -> str:
if length is None:
length = self.extract_uint16()
string_buffer = self._buffer[self._seek_position:self._seek_position + length]
# Find null terminator
string_length = length
for idx, byte_val in enumerate(string_buffer):
if byte_val == 0:
string_length = idx
break
try:
value = string_buffer[:string_length].decode('utf-8').strip()
except UnicodeDecodeError:
value = string_buffer[:string_length].decode('utf-8', errors='ignore').strip()
self._seek_position += length
return value
def extract_char(self) -> str:
return self.extract_string(1)
def extract_tacan(self) -> TACAN:
return TACAN(
is_on=self.extract_bool(),
channel=self.extract_uint8(),
xy=self.extract_char(),
callsign=self.extract_string(4)
)
def extract_radio(self) -> Radio:
return Radio(
frequency=self.extract_uint32(),
callsign=self.extract_uint8(),
callsign_number=self.extract_uint8()
)
def extract_general_settings(self) -> GeneralSettings:
return GeneralSettings(
prohibit_jettison=self.extract_bool(),
prohibit_aa=self.extract_bool(),
prohibit_ag=self.extract_bool(),
prohibit_afterburner=self.extract_bool(),
prohibit_air_wpn=self.extract_bool()
)
def extract_ammo(self) -> List[Ammo]:
value = []
size = self.extract_uint16()
for _ in range(size):
value.append(Ammo(
quantity=self.extract_uint16(),
name=self.extract_string(33),
guidance=self.extract_uint8(),
category=self.extract_uint8(),
missile_category=self.extract_uint8()
))
return value
def extract_contacts(self) -> List[Contact]:
value = []
size = self.extract_uint16()
for _ in range(size):
value.append(Contact(
id=self.extract_uint32(),
detection_method=self.extract_uint8()
))
return value
def extract_active_path(self) -> List[LatLng]:
value = []
size = self.extract_uint16()
for _ in range(size):
value.append(self.extract_lat_lng())
return value
def extract_offset(self) -> Offset:
return Offset(
x=self.extract_float64(),
y=self.extract_float64(),
z=self.extract_float64()
)