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# Undercooked - a game about cooking
# Copyright 2024 nokoe
# Copyright 2024 metamuffin
# Copyright 2024 tpart
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, version 3 of the License only.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
class_name Multiplayer
extends Node
signal init(player_id: int)
signal data(
item_names: Array,
tile_names: Array,
tile_collide: Array,
tile_interact: Array
)
signal set_tile(tile: Vector2i, kind: int, neighbors: Array)
signal remove_tile(tile: Vector2i)
signal clear_message(player: int)
signal text_message(player: int, text: String)
signal item_message(player: int, item: int)
signal add_player(player: int, name: String, pos: Vector2, character: int)
signal remove_player(player: int)
signal position(player: int, position: Vector2, rotation: float)
signal take_item(tile: Vector2i, player: int)
signal put_item(tile: Vector2i, player: int)
signal set_tile_item(tile: Vector2i, item: int)
signal remove_tile_item(tile: Vector2i)
signal set_player_item(player: int, item: int)
signal remove_player_item(player: int)
signal set_progress(tile: Vector2i, progress: float, warn: bool)
signal set_finished(tile: Vector2i, warn: bool)
signal connection_closed(reason: String)
var connected := false
var socket := WebSocketPeer.new()
func _ready():
print("Multiplayer connect");
socket.connect_to_url(Global.server_url)
connected = true
func _notification(what):
if what == NOTIFICATION_PREDELETE:
print("Multiplayer disconnect");
socket.close()
connected = false
func _process(_delta):
if connected:
socket.poll()
var state = socket.get_ready_state()
if state == WebSocketPeer.STATE_OPEN:
while socket.get_available_packet_count():
handle_packet(socket.get_packet())
elif state == WebSocketPeer.STATE_CLOSED:
var code = socket.get_close_code()
var reason = socket.get_close_reason()
emit_signal("connection_closed", "WebSocket closed with code: %d, reason %s. Clean: %s" % [code, reason, code != -1])
self.queue_free()
func handle_packet(bytes: PackedByteArray):
var decoded = decode_packet(bytes)
if decoded == null:
return
var packet_type: String = decoded["type"]
match packet_type:
"init":
var player_id = decoded["id"]
emit_signal("init", player_id)
"data":
var item_names = decoded["data"]["item_names"]
var tile_names = decoded["data"]["tile_names"]
var tile_collide = decoded["data"]["tile_collide"]
var tile_interact = decoded["data"]["tile_interact"]
emit_signal("data",
item_names,
tile_names,
tile_collide,
tile_interact
)
"add_player":
var id = decoded["id"]
var player_name = decoded["name"]
var pos = decoded["position"]
var character = decoded["character"]
emit_signal("add_player", id, player_name, pos_to_vec2(pos), character)
"remove_player":
var id = decoded["id"]
emit_signal("remove_player", id)
"position":
var player = decoded["player"]
var pos = decoded["pos"]
var rot = decoded["rot"]
emit_signal("position", player, pos_to_vec2(pos), rot)
"take_item":
var tile = pos_to_vec2i(decoded["tile"])
var player = decoded["player"]
emit_signal("take_item", tile, player)
"put_item":
var tile = pos_to_vec2i(decoded["tile"])
var player = decoded["player"]
emit_signal("put_item", tile, player)
"set_active":
var tile = pos_to_vec2i(decoded["tile"])
var warn = decoded["warn"]
var progress = decoded.get("progress")
if progress != null:
emit_signal("set_progress", tile, decoded["progress"], warn)
else:
emit_signal("set_finished", tile, warn)
"set_tile_item":
var tile = pos_to_vec2i(decoded["tile"])
var item = decoded.get("item")
if item != null:
emit_signal("set_tile_item", tile, item)
else:
emit_signal("remove_tile_item", tile)
"set_player_item":
var player = decoded["player"]
var item = decoded.get("item")
if item != null:
emit_signal("set_player_item", player, decoded["item"])
else:
emit_signal("remove_player_item", player)
"update_map":
var tile: Vector2i = pos_to_vec2i(decoded["tile"])
var kind = decoded.get("kind")
var neighbors: Array = decoded["neighbors"]
if kind != null:
emit_signal(
"set_tile",
tile,
kind,
neighbors,
)
else:
emit_signal("remove_tile", tile)
"communicate":
var player = decoded["player"]
var message = decoded.get("message")
if message != null:
var item = message.get("item")
var text = message.get("text")
if item != null:
emit_signal("item_message", player, item)
elif text != null:
emit_signal("text_message", player, text)
else:
push_error("neither text nor item provided")
else:
emit_signal("clear_message", player)
"error":
var message = decoded["message"]
push_warning("server error: %s" % message)
_:
push_error("Unrecognized packet type: %s" % packet_type)
func send_join(player_name: String, character: int):
send_packet({
"type": "join",
"name": player_name,
"character": character
})
func send_position(pos: Vector2, rotation: float):
send_packet({
"type": "position",
"pos": [pos.x, pos.y],
"rot": rotation
})
func send_interact(pos: Vector2i, edge: bool):
send_packet({
"type": "interact",
"pos": [pos.x, pos.y],
"edge": edge
})
func send_packet(packet):
var json = JSON.stringify(packet)
socket.send_text(json)
func decode_packet(bytes: PackedByteArray):
var json = JSON.new()
var in_str = bytes.get_string_from_utf8()
var error = json.parse(in_str)
if error == OK:
return json.data
else:
print("Decode of packet failed: %s in %s" % [json.get_error_message(), in_str])
return null
func pos_to_vec2(pos: Array) -> Vector2:
return Vector2(pos[0], pos[1])
func pos_to_vec2i(pos: Array) -> Vector2i:
return Vector2i(pos[0], pos[1])
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