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| 1 | +from PyQt5.QtCore import QObject, pyqtSignal |
| 2 | +from enum import Enum |
| 3 | +from model.game import GameState |
| 4 | + |
| 5 | +class FriendEvents(Enum): |
| 6 | + HOSTING_GAME = 1 |
| 7 | + JOINED_GAME = 2 |
| 8 | + REPLAY_AVAILABLE = 3 |
| 9 | + |
| 10 | + |
| 11 | +class OnlineFriendsTracker(QObject): |
| 12 | + """ |
| 13 | + Keeps track of current online friends. Notifies about added or removed |
| 14 | + friends, no matter if it happens through (dis)connecting or through |
| 15 | + the user adding or removing friends. |
| 16 | + """ |
| 17 | + friendAdded = pyqtSignal(object) |
| 18 | + friendRemoved = pyqtSignal(object) |
| 19 | + |
| 20 | + def __init__(self, me, playerset): |
| 21 | + QObject.__init__(self) |
| 22 | + self.friends = set() |
| 23 | + self._me = me |
| 24 | + self._playerset = playerset |
| 25 | + |
| 26 | + self._me.relationsUpdated.connect(self._update_friends) |
| 27 | + self._playerset.playerAdded.connect(self._add_or_update_player) |
| 28 | + self._playerset.playerRemoved.connect(self._remove_player) |
| 29 | + |
| 30 | + for player in self._playerset: |
| 31 | + self._add_or_update_player(player) |
| 32 | + |
| 33 | + def _is_friend(self, player): |
| 34 | + return self._me.isFriend(player.id) |
| 35 | + |
| 36 | + def _add_friend(self, player): |
| 37 | + if player in self.friends: |
| 38 | + return |
| 39 | + self.friends.add(player) |
| 40 | + self.friendAdded.emit(player) |
| 41 | + |
| 42 | + def _remove_friend(self, player): |
| 43 | + if player not in self.friends: |
| 44 | + return |
| 45 | + self.friends.remove(player) |
| 46 | + self.friendRemoved.emit(player) |
| 47 | + |
| 48 | + def _add_or_update_player(self, player): |
| 49 | + if self._is_friend(player): |
| 50 | + self._add_friend(player) |
| 51 | + else: |
| 52 | + self._remove_friend(player) |
| 53 | + |
| 54 | + def _remove_player(self, player): |
| 55 | + self._remove_friend(player) |
| 56 | + |
| 57 | + def _update_friends(self, player_ids): |
| 58 | + for pid in player_ids: |
| 59 | + try: |
| 60 | + player = self._playerset[pid] |
| 61 | + except KeyError: |
| 62 | + continue |
| 63 | + self._add_or_update_player(player) |
| 64 | + |
| 65 | + |
| 66 | +class FriendEventTracker(QObject): |
| 67 | + """ |
| 68 | + Tracks and notifies about interesting events of a single friend player. |
| 69 | + """ |
| 70 | + friendEvent = pyqtSignal(object, object) |
| 71 | + |
| 72 | + def __init__(self, friend): |
| 73 | + QObject.__init__(self) |
| 74 | + self._friend = friend |
| 75 | + self._friend_game = None |
| 76 | + friend.newCurrentGame.connect(self._on_new_friend_game) |
| 77 | + self._reconnect_game_signals() |
| 78 | + |
| 79 | + def _on_new_friend_game(self): |
| 80 | + self._reconnect_game_signals() |
| 81 | + self._check_game_joining_event() |
| 82 | + |
| 83 | + def _reconnect_game_signals(self): |
| 84 | + old_game = self._friend_game |
| 85 | + if old_game is not None: |
| 86 | + old_game.liveReplayAvailable.disconnect( |
| 87 | + self._check_game_replay_event) |
| 88 | + |
| 89 | + new_game = self._friend.currentGame |
| 90 | + self._friend_game = new_game |
| 91 | + if new_game is not None: |
| 92 | + new_game.liveReplayAvailable.connect( |
| 93 | + self._check_game_replay_event) |
| 94 | + |
| 95 | + def _check_game_joining_event(self): |
| 96 | + if self._friend_game is None: |
| 97 | + return |
| 98 | + if self._friend_game.state == GameState.OPEN: |
| 99 | + if self._friend_game.host == self._friend.login: |
| 100 | + self.friendEvent.emit(self._friend, FriendEvents.HOSTING_GAME) |
| 101 | + else: |
| 102 | + self.friendEvent.emit(self._friend, FriendEvents.JOINED_GAME) |
| 103 | + |
| 104 | + def _check_game_replay_event(self): |
| 105 | + if self._friend_game is None: |
| 106 | + return |
| 107 | + if not self._friend_game.has_live_replay: |
| 108 | + return |
| 109 | + self.friendEvent.emit(self._friend, FriendEvents.REPLAY_AVAILABLE) |
| 110 | + |
| 111 | + def report_all_events(self): |
| 112 | + self._check_game_joining_event() |
| 113 | + self._check_game_replay_event() |
| 114 | + |
| 115 | + |
| 116 | +class FriendsEventTracker(QObject): |
| 117 | + """ |
| 118 | + Forwards notifications about all online friend players. |
| 119 | + FIXME: we duplicate all friend tracker signals here, is there a more |
| 120 | + elegant way? Maybe an enum and a single signal? |
| 121 | + """ |
| 122 | + friendEvent = pyqtSignal(object, object) |
| 123 | + |
| 124 | + def __init__(self, online_friend_tracker): |
| 125 | + QObject.__init__(self) |
| 126 | + self._online_friend_tracker = online_friend_tracker |
| 127 | + self._friend_event_trackers = {} |
| 128 | + |
| 129 | + self._online_friend_tracker.friendAdded.connect(self._add_friend) |
| 130 | + self._online_friend_tracker.friendRemoved.connect(self._remove_friend) |
| 131 | + |
| 132 | + for friend in self._online_friend_tracker.friends: |
| 133 | + self._add_friend(friend) |
| 134 | + |
| 135 | + def _add_friend(self, friend): |
| 136 | + tracker = FriendEventTracker(friend) |
| 137 | + tracker.friendEvent.connect(self.friendEvent.emit) |
| 138 | + self._friend_event_trackers[friend.id] = tracker |
| 139 | + |
| 140 | + # No risk of reporting an event twice - either it didn't happen yet |
| 141 | + # so it won't be reported here, or it happened already so it wasn't |
| 142 | + # tracked |
| 143 | + tracker.report_all_events() |
| 144 | + |
| 145 | + def _remove_friend(self, friend): |
| 146 | + try: |
| 147 | + # Signals get disconnected automatically since tracker is |
| 148 | + # no longer referenced. |
| 149 | + del self._friend_event_trackers[friend.id] |
| 150 | + except KeyError: |
| 151 | + pass |
| 152 | + |
| 153 | + |
| 154 | +def build_friends_tracker(me, playerset): |
| 155 | + online_friend_tracker = OnlineFriendsTracker(me, playerset) |
| 156 | + friends_event_tracker = FriendsEventTracker(online_friend_tracker) |
| 157 | + return friends_event_tracker |
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