1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
# Hurry Curry! - a game about cooking
# Copyright (C) 2025 Hurry Curry! contributors
#
# 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 = 12
static var VERSION_MINOR: int = 0
var connected := false
var socket: WebSocketPeer
var keep_alive := Timer.new()
func _ready():
add_child(keep_alive)
keep_alive.wait_time = 1.
keep_alive.timeout.connect(send_keep_alive)
func connect_to_urls(urls: Array[String]):
if urls.is_empty():
connection_closed.emit("No connection address available.")
return
var error_info: Dictionary[String, int] = {}
# Create a WebSocketPeer for each url
var peers: Array[WebSocketPeer] = []
for url: String in urls:
var ws := WebSocketPeer.new()
ws.inbound_buffer_size = 1024 * 1024 * 4
var err := ws.connect_to_url(url)
if err == OK: peers.append(ws)
else: error_info[url] = err
# Now keep polling until one of them is succesful, or we run out of peers.
# Peers are removed from the peers array when they fail to connect.
var open_peer_found := false
while not peers.is_empty() and not open_peer_found:
await get_tree().physics_frame
for peer: WebSocketPeer in peers:
peer.poll()
var state := peer.get_ready_state()
match state:
WebSocketPeer.STATE_CLOSED:
print("URL %s failed" % peer.get_requested_url())
error_info[peer.get_requested_url()] = peer.get_close_code()
peers.erase(peer)
WebSocketPeer.STATE_OPEN:
# We found a connection that works. Close all others.
print("URL %s connected!" % peer.get_requested_url())
socket = peer
var other_peers := peers.filter(func (p): return p != peer)
for p: WebSocketPeer in other_peers:
p.close()
open_peer_found = true
break
_: pass
if not open_peer_found:
var err_msg: String = tr("c.error.could_not_connect")
for url: String in error_info.keys():
err_msg += "\nURL %s failed with code %d" % [url, error_info[url]]
connection_closed.emit(err_msg)
return
connected = true
keep_alive.start()
func _notification(what):
if what == NOTIFICATION_PREDELETE and socket != null:
socket.close()
connected = false
func _process(_delta):
if connected:
socket.poll()
var state = socket.get_ready_state()
while socket.get_available_packet_count():
handle_packet(socket.get_packet())
if state == WebSocketPeer.STATE_CLOSED:
connection_closed.emit("c.error.connection_closed")
connected = false
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])
else: newval[k] = val[k]
# 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_style: Dictionary):
send_packet({
"type": "join",
"name": player_name,
"character": character_style
})
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, hand: int):
@warning_ignore("incompatible_ternary")
send_packet({
"type": "interact",
"player": player,
"target": {"tile": [pos.x, pos.y]} if edge else null,
"hand": hand,
})
func send_player_interact(player, target_player, target_hand: int, edge: bool, hand: int):
@warning_ignore("incompatible_ternary")
send_packet({
"type": "interact",
"player": player,
"target": {"player": [target_player, target_hand]} if edge else null,
"hand": hand,
})
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_idle(paused: bool):
send_packet({
"type": "idle",
"paused": paused,
})
func send_leave(player):
send_packet({
"type": "leave",
"player": player,
})
func send_ready():
send_packet({
"type": "ready"
})
func send_keep_alive() -> void:
send_packet({
"type": "keepalive"
})
func send_packet(p):
var json = JSON.stringify(p)
if socket.get_ready_state() != WebSocketPeer.State.STATE_OPEN:
push_warning("Can not send packet: Socket not open")
return
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
|
