Event Queue #1

* Added EventQueue system for events with requirements, and timers.

game/scripts/events/DayNight.rpy

@@ -95,8 +95,9 @@ label day_start:
         if not first_random_twins:
             $ twins_interest = True
 
-    # Deliver mail
+    # Pass time
     $ mailbox.tick()
+    $ eventqueue.tick()
 
     # Update map locations
     call set_her_map_location()

game/scripts/events/Quests.rpy

@@ -357,6 +357,7 @@ label quests:
                 # (Optional) Genie gets caught by Snape. (E0 can play either before or after E1)
                 jump potions_intro_E0
 
+    $ eventqueue.start()
 
     # All quest events should somehow end with a jump to the main room day/night cycle
     # If no quest event is triggered, resume normally from the main room

game/scripts/events/queue.rpy

@@ -0,0 +1,88 @@
+
+init -1 python:
+    class EventQueue(object):
+        def __init__(self):
+            self.queue = []
+            self.freeze = False
+
+        def get_events(self, raw=False):
+            return self.queue if raw else [x for x in self.queue if x.wait < 1]
+
+        def freeze(self):
+            self.freeze = True
+
+        def unfreeze(self):
+            self.freeze = False
+
+        def delay(self, n):
+            for i in self.queue:
+                i.wait += n
+
+        def tick(self):
+            """Causes time to pass."""
+            if self.freeze:
+                return
+
+            for i in self.queue:
+                i.wait -= 1
+
+        def start(self):
+            queue = self.queue
+            queue = filter(lambda x: (x.wait > 0) or (not x.daytime == game.daytime), queue)
+            queue.sort(key=lambda x: x.priority)
+
+            for ev in queue:
+                ev.start()
+
+                if not ev.requirements_met():
+                    continue
+
+                if ev.label:
+                    break
+
+        def is_in_queue(self, ev):
+            if isinstance(ev, str):
+                return any(i.id == ev for i in self.queue)
+            return ev in self.queue
+
+    class Event(object):
+        """
+        Queue is universal for all instanced objects.
+        """
+
+        def __init__(self, id, wait=0, priority=5, daytime=True, req=None, label=None, func=None):
+            self.queued = False
+            self.id = id
+            self.wait = wait
+            self.priority = priority
+            self.daytime = daytime
+            self.req = req
+            self.label = label
+            self.func = func
+            self.queue = eventqueue.queue
+
+            if not renpy.has_label(self.label):
+                raise Exception("Supplied label does not exist.")
+
+        def enlist(self):
+            self.queued = True
+
+            if not self in self.queue:
+                self.queue.append(self)
+
+        def requirements_met(self):
+            if self.req:
+                return eval(self.req)
+            return True
+
+        def start(self):
+            if self in self.queue:
+                self.queue.remove(self)
+
+            if self.func:
+                self.func()
+
+            if self.label:
+                renpy.jump(self.label)
+
+default eventqueue = EventQueue()