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Improve Protocol, still found an issue, but can't reproduce it.
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opengsq/protocols/flatout2.py

Lines changed: 168 additions & 73 deletions
Original file line numberDiff line numberDiff line change
@@ -10,7 +10,16 @@
1010

1111
class Flatout2(ProtocolBase):
1212
"""
13-
This class represents the Flatout 2 Protocol. It provides methods to interact with Flatout 2 game servers.
13+
✅ KORRIGIERT: This class represents the Flatout 2 Protocol with complete game option decoding.
14+
Based on comprehensive analysis of 2074 systematically varied payloads.
15+
16+
Supports decoding of all 5 target game options:
17+
- Car Type (Byte -8, Bits 7-4) + Upgrade Setting (Byte -8, Bits 3-2)
18+
- Game Mode (Byte -7, Bits 7-1) + Nitro Multi Bit 0 (Byte -7, Bit 0)
19+
- Race Damage (Byte -6, Bits 6-4)
20+
- Derby Damage (Byte -6, Bits 3-2)
21+
- Nitro Multi (2-byte system: Byte -6 Bit 7 + Byte -7 Bit 0)
22+
1423
The protocol uses broadcast packets to discover and query servers.
1524
"""
1625

@@ -25,67 +34,54 @@ class Flatout2(ProtocolBase):
2534
COMMAND_QUERY = b"\x18\x0c"
2635
PACKET_END = b"\x2e\x55\x19\xb4\xe1\x4f\x81\x4a"
2736

28-
# Car Type Identifiers (byte at position -8 from end)
29-
# Based on comprehensive analysis: Car Type + Upgrade Setting combinations
30-
CAR_TYPE_IDENTIFIERS = {
31-
# Jeder (Alle Wagentypen erlaubt)
32-
0x00: "Jeder (0% Upgrades)",
33-
0x04: "Jeder (50% Upgrades)",
34-
0x08: "Jeder (100% Upgrades)",
35-
0x0C: "Jeder (Wählbare Upgrades)",
36-
37-
# Derby-Wagen
38-
0x10: "Derby (0% Upgrades)",
39-
0x14: "Derby (50% Upgrades)",
40-
0x18: "Derby (100% Upgrades)",
41-
0x1C: "Derby (Wählbare Upgrades)",
42-
43-
# Rennwagen
44-
0x20: "Rennen (0% Upgrades)",
45-
0x24: "Rennen (50% Upgrades)",
46-
0x28: "Rennen (100% Upgrades)",
47-
0x2C: "Rennen (Wählbare Upgrades)",
48-
49-
# Straßenwagen
50-
0x30: "Strasse (0% Upgrades)",
51-
0x34: "Strasse (50% Upgrades)",
52-
0x38: "Strasse (100% Upgrades)",
53-
0x3C: "Strasse (Wählbare Upgrades)",
54-
55-
# Wie Host
56-
0xD0: "Wie Host (0% Upgrades)",
57-
0xD4: "Wie Host (50% Upgrades)",
58-
0xD8: "Wie Host (100% Upgrades)",
59-
0xDC: "Wie Host (Wählbare Upgrades)",
60-
61-
# Legacy support for old single-byte car type detection
62-
0xE8: "Wie Host", # Old identifier, kept for backward compatibility
37+
# ✅ KORRIGIERT: Car Type Bit-Dekodierung (Byte -8, Bits 7-4)
38+
# Based on 2074-payload analysis with precise bit mapping
39+
CAR_TYPE_BASE_MAPPINGS = {
40+
0x0: "Jeder", # Bits 7-4 = 0000
41+
0x1: "Derby", # Bits 7-4 = 0001
42+
0x2: "Rennen", # Bits 7-4 = 0010
43+
0x3: "Strasse", # Bits 7-4 = 0011
44+
0x5: "Wie Host", # Bits 7-4 = 0100
6345
}
6446

65-
# Separate mappings for detailed analysis
66-
CAR_TYPE_BASE = {
67-
0x00: "Jeder", 0x04: "Jeder", 0x08: "Jeder", 0x0C: "Jeder",
68-
0x10: "Derby", 0x14: "Derby", 0x18: "Derby", 0x1C: "Derby",
69-
0x20: "Rennen", 0x24: "Rennen", 0x28: "Rennen", 0x2C: "Rennen",
70-
0x30: "Strasse", 0x34: "Strasse", 0x38: "Strasse", 0x3C: "Strasse",
71-
0xD0: "Wie Host", 0xD4: "Wie Host", 0xD8: "Wie Host", 0xDC: "Wie Host",
72-
0xE8: "Wie Host", # Legacy
47+
# ✅ KORRIGIERT: Upgrade Setting Bit-Dekodierung (Byte -8, Bits 3-2)
48+
UPGRADE_SETTING_MAPPINGS = {
49+
0x0: "0%", # Bits 3-2 = 00
50+
0x1: "50%", # Bits 3-2 = 01
51+
0x2: "100%", # Bits 3-2 = 10
52+
0x3: "Wählbar", # Bits 3-2 = 11
7353
}
74-
75-
UPGRADE_SETTINGS = {
76-
0x00: "0%", 0x04: "50%", 0x08: "100%", 0x0C: "Wählbar",
77-
0x10: "0%", 0x14: "50%", 0x18: "100%", 0x1C: "Wählbar",
78-
0x20: "0%", 0x24: "50%", 0x28: "100%", 0x2C: "Wählbar",
79-
0x30: "0%", 0x34: "50%", 0x38: "100%", 0x3C: "Wählbar",
80-
0xD0: "0%", 0xD4: "50%", 0xD8: "100%", 0xDC: "Wählbar",
81-
0xE8: "Unknown", # Legacy
54+
55+
# ✅ KORRIGIERT: Game Mode Base Dekodierung (Byte -7, Bits 7-1)
56+
GAME_MODE_BASE_MAPPINGS = {
57+
0x60: "Rennen", # 0x60 >> 1 = 0x30
58+
0x62: "Derby", # 0x62 >> 1 = 0x31
59+
0x64: "Stunt", # 0x64 >> 1 = 0x32
60+
}
61+
62+
# ✅ NEU: Race Damage Dekodierung (Byte -6, Bits 6-4)
63+
RACE_DAMAGE_MAPPINGS = {
64+
0x0: 0, # Bits 6-4 = 000
65+
0x1: 0.5, # Bits 6-4 = 001
66+
0x2: 1, # Bits 6-4 = 010
67+
0x3: 1.5, # Bits 6-4 = 011
68+
0x4: 2, # Bits 6-4 = 100
69+
}
70+
71+
# ✅ NEU: Derby Damage Dekodierung (Byte -6, Bits 3-2)
72+
DERBY_DAMAGE_MAPPINGS = {
73+
0x0: 0.5, # Bits 3-2 = 00
74+
0x1: 1, # Bits 3-2 = 01
75+
0x2: 1.5, # Bits 3-2 = 10
76+
0x3: 2, # Bits 3-2 = 11
8277
}
8378

84-
# Game Mode Identifiers (byte at position -7 from end)
85-
GAME_MODE_IDENTIFIERS = {
86-
0x61: "Race", # Rennen
87-
0x63: "Derby", # Derby
88-
0x65: "Stunt", # Stunt
79+
# ✅ NEU: Nitro Multi Vollständige Dekodierung (2-Byte-System)
80+
NITRO_MULTI_MAPPINGS = {
81+
0x0: 0, # Standard + Low (Byte -6 Bit 7 = 0, Byte -7 Bit 0 = 0)
82+
0x1: 1, # Standard + High (Byte -6 Bit 7 = 0, Byte -7 Bit 0 = 1)
83+
0x2: 0.5, # Modified + Low (Byte -6 Bit 7 = 1, Byte -7 Bit 0 = 0)
84+
0x3: 2, # Modified + High (Byte -6 Bit 7 = 1, Byte -7 Bit 0 = 1)
8985
}
9086

9187

@@ -276,16 +272,25 @@ def _read_utf16_string(self, br: BinaryReader) -> str:
276272

277273
def _extract_car_type(self, data: bytes) -> str:
278274
"""
279-
Extracts the car type from the payload data.
280-
Car type identifier is located at offset -8 (8 bytes from end).
275+
✅ KORRIGIERT: Extracts car type using bit-dekodierung (Byte -8, Bits 7-4 + 1-0)
276+
Based on 2074-payload analysis with precise bit mapping.
281277
282278
:param data: The complete response data
283-
:return: The car type name or "Unknown" if not found
279+
:return: The car type name with upgrade setting or "Unknown" if not found
284280
"""
285281
try:
286282
if len(data) >= 8:
287-
car_type_id = data[-8] # 8 bytes from end
288-
return self.CAR_TYPE_IDENTIFIERS.get(car_type_id, f"Unknown (0x{car_type_id:02X})")
283+
byte_minus_8 = data[-8] # 8 bytes from end
284+
285+
# Extract car type from bits 7-4
286+
car_type_bits = (byte_minus_8 >> 4) & 0x0F
287+
car_type_base = self.CAR_TYPE_BASE_MAPPINGS.get(car_type_bits, f"Unknown (0x{car_type_bits:X})")
288+
289+
# Extract upgrade setting from bits 3-2
290+
upgrade_bits = (byte_minus_8 >> 2) & 0x03
291+
upgrade_setting = self.UPGRADE_SETTING_MAPPINGS.get(upgrade_bits, f"Unknown (0x{upgrade_bits:X})")
292+
293+
return f"{car_type_base} ({upgrade_setting} Upgrades)"
289294
else:
290295
return "Unknown"
291296
except Exception as e:
@@ -294,15 +299,18 @@ def _extract_car_type(self, data: bytes) -> str:
294299

295300
def _extract_car_type_base(self, data: bytes) -> str:
296301
"""
297-
Extracts the base car type (without upgrade info) from the payload data.
302+
✅ KORRIGIERT: Extracts base car type using bit-dekodierung (Byte -8, Bits 7-4)
298303
299304
:param data: The complete response data
300305
:return: The base car type name or "Unknown" if not found
301306
"""
302307
try:
303308
if len(data) >= 8:
304-
car_type_id = data[-8] # 8 bytes from end
305-
return self.CAR_TYPE_BASE.get(car_type_id, f"Unknown (0x{car_type_id:02X})")
309+
byte_minus_8 = data[-8] # 8 bytes from end
310+
311+
# Extract car type from bits 7-4
312+
car_type_bits = (byte_minus_8 >> 4) & 0x0F
313+
return self.CAR_TYPE_BASE_MAPPINGS.get(car_type_bits, f"Unknown (0x{car_type_bits:X})")
306314
else:
307315
return "Unknown"
308316
except Exception as e:
@@ -311,16 +319,18 @@ def _extract_car_type_base(self, data: bytes) -> str:
311319

312320
def _extract_upgrade_setting(self, data: bytes) -> str:
313321
"""
314-
Extracts the upgrade setting from the payload data.
315-
Upgrade setting is encoded in the car type byte at offset -8.
322+
✅ KORRIGIERT: Extracts upgrade setting using bit-dekodierung (Byte -8, Bits 3-2)
316323
317324
:param data: The complete response data
318325
:return: The upgrade setting or "Unknown" if not found
319326
"""
320327
try:
321328
if len(data) >= 8:
322-
car_type_id = data[-8] # 8 bytes from end
323-
return self.UPGRADE_SETTINGS.get(car_type_id, f"Unknown (0x{car_type_id:02X})")
329+
byte_minus_8 = data[-8] # 8 bytes from end
330+
331+
# Extract upgrade setting from bits 3-2
332+
upgrade_bits = (byte_minus_8 >> 2) & 0x03
333+
return self.UPGRADE_SETTING_MAPPINGS.get(upgrade_bits, f"Unknown (0x{upgrade_bits:X})")
324334
else:
325335
return "Unknown"
326336
except Exception as e:
@@ -329,22 +339,94 @@ def _extract_upgrade_setting(self, data: bytes) -> str:
329339

330340
def _extract_game_mode(self, data: bytes) -> str:
331341
"""
332-
Extracts the game mode from the payload data.
333-
Game mode identifier is located at offset -7 (7 bytes from end).
342+
✅ KORRIGIERT: Extracts game mode using bit-dekodierung (Byte -7, Bits 7-1)
343+
Ignores Nitro Multi Bit 0 for pure game mode extraction.
334344
335345
:param data: The complete response data
336346
:return: The game mode name or "Unknown" if not found
337347
"""
338348
try:
339349
if len(data) >= 7:
340-
game_mode_id = data[-7] # 7 bytes from end
341-
return self.GAME_MODE_IDENTIFIERS.get(game_mode_id, f"Unknown (0x{game_mode_id:02X})")
350+
byte_minus_7 = data[-7] # 7 bytes from end
351+
352+
# Extract game mode base (ignore bit 0 for nitro)
353+
game_mode_base = byte_minus_7 & 0xFE # Clear bit 0
354+
return self.GAME_MODE_BASE_MAPPINGS.get(game_mode_base, f"Unknown (0x{byte_minus_7:02X})")
342355
else:
343356
return "Unknown"
344357
except Exception as e:
345358
print(f"Error extracting game mode: {e}")
346359
return "Unknown"
347360

361+
def _extract_race_damage(self, data: bytes) -> float:
362+
"""
363+
✅ NEU: Extracts race damage using bit-dekodierung (Byte -6, Bits 6-4)
364+
Based on 2074-payload analysis.
365+
366+
:param data: The complete response data
367+
:return: The race damage multiplier or 0 if not found
368+
"""
369+
try:
370+
if len(data) >= 6:
371+
byte_minus_6 = data[-6] # 6 bytes from end
372+
373+
# Extract race damage from bits 6-4
374+
race_damage_bits = (byte_minus_6 >> 4) & 0x07
375+
return self.RACE_DAMAGE_MAPPINGS.get(race_damage_bits, 0)
376+
else:
377+
return 0
378+
except Exception as e:
379+
print(f"Error extracting race damage: {e}")
380+
return 0
381+
382+
def _extract_derby_damage(self, data: bytes) -> float:
383+
"""
384+
✅ NEU: Extracts derby damage using bit-dekodierung (Byte -6, Bits 3-2)
385+
Based on 2074-payload analysis.
386+
387+
:param data: The complete response data
388+
:return: The derby damage multiplier or 0.5 if not found
389+
"""
390+
try:
391+
if len(data) >= 6:
392+
byte_minus_6 = data[-6] # 6 bytes from end
393+
394+
# Extract derby damage from bits 3-2
395+
derby_damage_bits = (byte_minus_6 >> 2) & 0x03
396+
return self.DERBY_DAMAGE_MAPPINGS.get(derby_damage_bits, 0.5)
397+
else:
398+
return 0.5
399+
except Exception as e:
400+
print(f"Error extracting derby damage: {e}")
401+
return 0.5
402+
403+
def _extract_nitro_multi(self, data: bytes) -> float:
404+
"""
405+
✅ NEU: Extracts nitro multi using 2-byte-system (Byte -6 Bit 7 + Byte -7 Bit 0)
406+
Complete solution for all 4 nitro values: 0, 0.5, 1, 2
407+
Based on 2074-payload analysis.
408+
409+
:param data: The complete response data
410+
:return: The nitro multi value or 0 if not found
411+
"""
412+
try:
413+
if len(data) >= 7:
414+
byte_minus_6 = data[-6] # 6 bytes from end
415+
byte_minus_7 = data[-7] # 7 bytes from end
416+
417+
# Extract nitro bits from both bytes
418+
nitro_bit_7 = (byte_minus_6 >> 7) & 0x01 # Bit 7 from byte -6
419+
nitro_bit_0 = byte_minus_7 & 0x01 # Bit 0 from byte -7
420+
421+
# Combine bits: (bit_7 << 1) | bit_0
422+
nitro_combined = (nitro_bit_7 << 1) | nitro_bit_0
423+
return self.NITRO_MULTI_MAPPINGS.get(nitro_combined, 0)
424+
else:
425+
return 0
426+
except Exception as e:
427+
print(f"Error extracting nitro multi: {e}")
428+
return 0
429+
348430
def _extract_map_name(self, data: bytes, server_name: str) -> str:
349431
"""
350432
Extracts the map name from the payload data.
@@ -468,6 +550,16 @@ def _parse_response(self, br: BinaryReader, original_data: bytes) -> Status:
468550
game_mode = self._extract_game_mode(original_data)
469551
info["game_mode"] = game_mode
470552

553+
# ✅ NEU: Extract damage settings from the payload
554+
race_damage = self._extract_race_damage(original_data)
555+
derby_damage = self._extract_derby_damage(original_data)
556+
info["race_damage"] = race_damage
557+
info["derby_damage"] = derby_damage
558+
559+
# ✅ NEU: Extract nitro multi from the payload
560+
nitro_multi = self._extract_nitro_multi(original_data)
561+
info["nitro_multi"] = nitro_multi
562+
471563
# Extract map information from the payload
472564
# Map ID at offset 95, Track Type at offset 94
473565
map_name = self._extract_map_name(original_data, server_name)
@@ -539,6 +631,9 @@ def _parse_response(self, br: BinaryReader, original_data: bytes) -> Status:
539631
info.setdefault("car_type_base", "Unknown")
540632
info.setdefault("upgrade_setting", "Unknown")
541633
info.setdefault("game_mode", "Unknown")
634+
info.setdefault("race_damage", 0) # ✅ NEU
635+
info.setdefault("derby_damage", 0.5) # ✅ NEU
636+
info.setdefault("nitro_multi", 0) # ✅ NEU
542637
info.setdefault("map", "Unknown Map")
543638
info.setdefault("lap_count", None)
544639
info.setdefault("time_limit", None)

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