1 """ World and player state. """
3 from .scenes.base import WorldEvent
7 """ World and player state. """
10 self._state = self._build_initial_state()
14 return self._state["level"]
18 return self._state["roaches"]
20 def _build_initial_state(self):
23 self._build_roach("roachel", smart=True),
24 self._build_roach("roeginald", strong=True),
25 self._build_roach("roichard", fast=True),
26 self._build_roach("roupert"),
29 "smart", "strong", "fast",
35 "roachel", None, "roeginald",
45 def _build_roach(self, name, health=5, **kw):
53 def _apply_set(self, updates):
54 for name, value in updates.items():
55 parts = name.split(".")
58 if isinstance(obj, dict):
60 elif isinstance(obj, list):
63 raise KeyError("%r not found in world" % (name,))
64 obj[parts[-1]] = value
67 return WorldDictProxy(self._state)
69 def apply_event(self, action, *args, **kw):
71 return self._apply_set(*args, **kw)
72 raise ValueError("Unknown world event action: %r" % (action,))
75 def _maybe_subproxy(proxy, name, value):
76 """ Return a sub world proxy if appropriate. """
77 if isinstance(value, dict):
78 prefix = "%s%s." % (proxy._prefix, name)
79 return WorldDictProxy(value, _prefix=prefix, _top=proxy._top)
80 elif isinstance(value, list):
81 prefix = "%s%s." % (proxy._prefix, name)
82 return WorldListProxy(value, _prefix=prefix, _top=proxy._top)
87 """ Base for world proxies. """
89 def __init__(self, state, _prefix='', _top=None):
95 self.__dict__.update({
102 def _record_change(self, fullname, value):
103 self._events.append(WorldEvent("set", {
107 def pop_events(self):
108 events, self._events = self._events, []
112 class WorldDictProxy(WorldBaseProxy):
113 """ World dictionary proxy that records changes and produces events. """
117 (k, _maybe_subproxy(self, k, v)) for k, v in self._state.items())
119 def __setattr__(self, name, value):
120 self._top._record_change("%s%s" % (self._prefix, name), value)
122 def __getattr__(self, name):
123 # return None for attributes that don't exist
124 value = self._state.get(name)
125 return _maybe_subproxy(self, name, value)
127 def __setitem__(self, name, value):
128 return self.__setattr__(name, value)
130 def __getitem__(self, name):
131 return self.__getattr__(name)
134 class WorldListProxy(WorldBaseProxy):
135 """ World list proxy that records changes and produces events. """
137 def __setitem__(self, index, value):
138 self._top._record_change("%s%s" % (self._prefix, index), value)
140 def __getitem__(self, index):
141 return _maybe_subproxy(self, index, self._state[index])
144 return len(self._state)
147 return bool(self._state)