Hi all,
I am learning Cocos 2D and Python and have a simple question.
I'd like to output the content of a variable on the screen, so that I can
see how it changes during runtime.
I have an actor class like this:
class Actor(cocos.cocosnode.CocosNode):
def __init__(self, x, y):
super(Actor, self).__init__()
w, h = director.get_window_size()
self.position = (x, y)
self.slow_radius = 200
self.velocity = eu.Vector2(0, 0)
self.speed = 10
self.max_force = 5
self.max_velocity = 200
self.target = None
self.seek = True
self.distance = 10
self.distance_text = self._create_text(w-60, h-40)
self.add(ps.Sun())
self.schedule(self.update)
def update(self, dt):
if self.target is None:
return
self.distance = self.target - eu.Vector2(self.x, self.y)
ramp = 1.0
ramp = min(abs(self.distance) / self.slow_radius, 1.0)
steering = self.distance * self.speed * ramp - self.velocity
steering = truncate(steering, self.max_force)
self.velocity = truncate(self.velocity + steering,
self.max_velocity)
direction = 1 if self.seek else -1
self.position += self.velocity * dt * direction
self.distance_text.element.text = 'Distance: %s' % self.distance
def _create_text(self, x, y):
text = cocos.text.Label(font_size=10, font_name='Verdana',
anchor_x='right', anchor_y='center',
color=(255, 255, 255, 255))
text.position = (x, y)
self.add(text)
return text
and I'd like to output the the content of self.distance for example.
I wrote another class called HUD:
class HUD(cocos.layer.Layer):
def __init__(self, distance):
super(HUD, self).__init__()
w, h = director.get_window_size()
self.distance = distance
self.distance_text = self._create_text(w-60, h-40)
self.distance_text.element.text = 'Distance: %s' % self.distance
def _create_text(self, x, y):
text = cocos.text.Label(font_size=10, font_name='Verdana',
anchor_x='right', anchor_y='center',
color=(255, 255, 255, 255))
text.position = (x, y)
self.add(text)
return text
and a Main Layer that calls both classes:
class MainLayer(cocos.layer.Layer):
is_event_handler = True
def __init__(self):
super(MainLayer, self).__init__()
self.actor = Actor(320, 240)
self.add(self.actor)
self.hud = HUD(self.actor.distance)
self.add(self.hud)
def on_mouse_motion(self, x, y, dx, dy):
self.actor.target = eu.Vector2(x, y)
def on_mouse_press(self, x, y, buttons, mod):
self.actor.seek = not self.actor.seek
The output on my screen stays at 10 and doesn't update to the values of the
update function.
Any help on this would be appreciated.
Thanks,
Christoph
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