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Add deterministic generated worlds

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This commit is contained in:
Alexander Sellite 2026-08-19 17:32:40 -04:00
parent 19f63bd656
commit e8888ed05a
87 changed files with 3743 additions and 139 deletions
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39
network/network_session.gd
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@ -85,6 +85,7 @@ var _last_server_max_players: int = DEFAULT_SESSION_MAX_PLAYERS
var _last_server_player_count: int = 0
var _last_server_display_name: String = ""
var _last_server_protocol_version: int = 0
var _last_server_world_seed: int = NetworkProtocol.DEFAULT_WORLD_SEED
var _server_capabilities: PackedStringArray = PackedStringArray()
var _profile_ready: bool = false
var _player_identity: PlayerIdentityStore
@ -111,6 +112,7 @@ var _configured_operator_fingerprints: Dictionary[String, bool] = {}
var _session_operator_fingerprints: Dictionary[String, bool] = {}
var _operator_peer_ids: Dictionary[int, bool] = {}
var _local_operator: bool = false
var _host_world_seed: int = NetworkProtocol.DEFAULT_WORLD_SEED
func _ready() -> void:
@ -272,6 +274,7 @@ func _register_player_host() -> void:
NetworkProtocol.JOBS_CAPABILITY,
NetworkProtocol.WORLD_SPAWN_CAPABILITY,
NetworkProtocol.BACKPACK_SHOP_CAPABILITY,
NetworkProtocol.WORLD_GENERATION_CAPABILITY,
]),
)
_registry.update_appearance(1, _local_appearance_snapshot)
@ -527,9 +530,25 @@ func get_last_server_metadata() -> Dictionary:
"protocol_version": _last_server_protocol_version,
"player_count": _last_server_player_count,
"max_players": _last_server_max_players,
"world_seed": _last_server_world_seed,
}
func set_host_world_seed(seed: int) -> bool:
if (
state != State.INACTIVE
or seed <= 0
or seed > NetworkProtocol.MAX_WORLD_SEED
):
return false
_host_world_seed = seed
return true
func get_authoritative_world_seed() -> int:
return _last_server_world_seed if is_joined_client() else _host_world_seed
func can_use_host_gameplay() -> bool:
return is_host()
@ -563,6 +582,7 @@ func supports_server_capability(capability: StringName) -> bool:
NetworkProtocol.WORLD_WEATHER_CAPABILITY,
NetworkProtocol.WORLD_SPAWN_CAPABILITY,
NetworkProtocol.APPEARANCE_PREVIEW_CAPABILITY,
NetworkProtocol.WORLD_GENERATION_CAPABILITY,
"chat_v1",
"mail_v1",
"profile_v1",
@ -1164,6 +1184,12 @@ func submit_client_hello(data: Dictionary) -> void:
NetworkProtocol.RejectionCode.UNSUPPORTED_CLIENT,
)
return
if NetworkProtocol.WORLD_GENERATION_CAPABILITY not in client_capabilities:
_reject_peer(
sender_id,
NetworkProtocol.RejectionCode.UNSUPPORTED_CLIENT,
)
return
var identity: Dictionary = _authenticated_identity_cache.get(sender_id, {})
if identity.is_empty():
_reject_peer(sender_id, NetworkProtocol.RejectionCode.INVALID_IDENTITY_PROOF)
@ -1251,6 +1277,7 @@ func submit_client_hello(data: Dictionary) -> void:
_registry.size(),
session_max_players,
_session_display_name,
_host_world_seed,
)
)
receive_spawn_list.rpc_id(sender_id, _build_spawn_list())
@ -1304,6 +1331,7 @@ func receive_server_hello(data: Dictionary) -> void:
or typeof(data.get("protocol_version")) != TYPE_INT
or typeof(data.get("game_version")) != TYPE_STRING
or typeof(data.get("rejection_code")) != TYPE_INT
or typeof(data.get("world_seed")) != TYPE_INT
):
_teardown_peer()
_fail("The server sent an invalid handshake response.")
@ -1329,6 +1357,11 @@ func receive_server_hello(data: Dictionary) -> void:
_teardown_peer()
_fail("The server uses a different network protocol.")
return
var received_world_seed := int(data["world_seed"])
if received_world_seed <= 0 or received_world_seed > NetworkProtocol.MAX_WORLD_SEED:
_teardown_peer()
_fail("The server sent an invalid world seed.")
return
_session_id = str(data.get("session_id", ""))
_last_server_max_players = int(data.get(
"max_players",
@ -1339,6 +1372,7 @@ func receive_server_hello(data: Dictionary) -> void:
_last_server_protocol_version = int(data.get(
"protocol_version", NetworkProtocol.PROTOCOL_VERSION
))
_last_server_world_seed = received_world_seed
_server_capabilities = PackedStringArray()
var advertised_capabilities: Variant = data.get(
"capability_flags", PackedStringArray()
@ -1353,6 +1387,10 @@ func receive_server_hello(data: Dictionary) -> void:
_teardown_peer()
_fail("This server does not support fish quality data.")
return
if NetworkProtocol.WORLD_GENERATION_CAPABILITY not in _server_capabilities:
_teardown_peer()
_fail("This server does not support generated worlds.")
return
var local_peer_id: int = multiplayer.get_unique_id()
_registry.clear()
_registry.add_peer(
@ -1368,6 +1406,7 @@ func receive_server_hello(data: Dictionary) -> void:
NetworkProtocol.WORLD_TIME_CAPABILITY,
NetworkProtocol.WORLD_WEATHER_CAPABILITY,
NetworkProtocol.BACKPACK_SHOP_CAPABILITY,
NetworkProtocol.WORLD_GENERATION_CAPABILITY,
]),
)
_registry.update_appearance(local_peer_id, _local_appearance_snapshot)