self._app = app
self._scene = scene
self._world = world
+ self._update_vehicle = False
def _apply_events(self, events):
if not events:
def move_screen(self, offset):
self._scene.move_screen(offset)
+ def add_roach(self):
+ self._world.add_new_roach()
+
@apply_events
def update(self, dt):
return self._scene.update(self._world.proxy(), self, dt)
ENGINE_METHOD = "move_screen"
+class AddRoachEvent(Event):
+ """ Change to a new scene. """
+
+ ENGINE_METHOD = "add_roach"
+
class Layer:
""" A single layer of actors. """
screen.blit(actor._surf, actor.topleft)
+def defer_to_update(f):
+ """ Defers a function until the next update run. """
+ @functools.wraps(f)
+ def wrapper(self, *args, **kw):
+ self._deferred_updates.append((f, args, kw))
+ return wrapper
+
+
class Scene:
""" Base class for scenes. """
def __init__(self):
self.actors = Actors()
self.viewport = (0, 0)
+ self._deferred_updates = []
def move_screen(self, offset):
self.viewport = (self.viewport[0] + offset[0],
pass
def update(self, world, engine, dt):
- pass
+ deferred_updates, self._deferred_updates = self._deferred_updates, []
+ for f, args, kw in deferred_updates:
+ f(self, world, *args, **kw)
def draw(self, screen):
screen.clear()