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# Hurry Curry! - 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 packet(packet: Dictionary)
signal connection_closed()
static var VERSION_MAJOR: int = 7
static var VERSION_MINOR: int = 3
var connected := false
var socket := WebSocketPeer.new()
func _ready():
print("Multiplayer connect");
socket.connect_to_url(Global.server_url)
socket.inbound_buffer_size = 1024 * 1024 * 4
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() if code == socket.STATE_CLOSED else tr("c.error.websocket.unavailable")
connection_closed.emit(tr("c.error.websocket").format([code, reason, code != -1]))
self.queue_free()
func fix_packet_types(val):
match typeof(val):
TYPE_FLOAT: return val
TYPE_STRING: return val
TYPE_BOOL: return val
TYPE_ARRAY: return val.map(fix_packet_types)
TYPE_DICTIONARY:
var newval = {}
for k in val.keys():
if typeof(val[k]) == TYPE_ARRAY and val[k].size() == 2 and typeof(val[k][0]) == TYPE_FLOAT and typeof(val[k][1]) == TYPE_FLOAT:
if k in ["tile"]: newval[k] = Vector2i(val[k][0], val[k][1])
elif k in ["pos", "position"]: newval[k] = Vector2(val[k][0], val[k][1])
# TODO reenable when fixed
# elif k in ["player", "id"] and typeof(val[k]) == TYPE_FLOAT:
# newval[k] = int(val[k])
else:
newval[k] = fix_packet_types(val[k])
return newval
func handle_packet(coded):
var p = decode_packet(coded)
if p == null:
return
p = fix_packet_types(p)
match p["type"]:
"version":
var major = p["major"]
var minor = p["minor"]
if major != VERSION_MAJOR or minor > VERSION_MINOR:
socket.close()
connected = false
connection_closed.emit(tr("c.error.version_mismatch").format([major, minor, VERSION_MAJOR, VERSION_MINOR]))
_: packet.emit(p)
func send_join(player_name: String, character: int):
send_packet({
"type": "join",
"name": player_name,
"character": character
})
func send_movement(player, pos: Vector2, direction: Vector2, boost: bool):
send_packet({
"type": "movement",
"player": player,
"pos": [pos.x, pos.y],
"dir": [direction.x, direction.y],
"boost": boost
})
func send_tile_interact(player, pos: Vector2i, edge: bool):
@warning_ignore("incompatible_ternary")
send_packet({
"type": "interact",
"player": player,
"pos": [pos.x, pos.y] if edge else null,
})
func send_player_interact(_player, _edge: bool):
push_error("not yet implemented")
func send_chat(player, message: String):
send_packet({
"type": "communicate",
"player": player,
"persist": false,
"message": {
"text": message
}
})
func send_replay_tick(dt: float):
send_packet({
"type": "replay_tick",
"dt": dt
})
func send_leave(player):
send_packet({
"type": "leave",
"player": player,
})
func send_packet(p):
var json = JSON.stringify(p)
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
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