On Thu, Oct 31, 2013 at 6:44 PM, John Ladasky <[email protected]>wrote:
> Hi folks,
>
> I'm continuing to work with Pyglet, and I'm getting results, but also
> problems. Here is a simple application which I developed first on my
> Ubuntu Linux 13.04 system, 64-bit version, AMD CPU, running Python 3.3.2
> and pyglet 1.2alpha1. This is a "hello world" program, with Earth as a
> bouncing ball in the background.
>
> ===================================================================
>
> import pyglet
> from random import uniform, choice
>
> def random_velocity():
> return [choice((-1,1)) * uniform(0.25,0.75) for x in range(2)]
>
> class MyWindow(pyglet.window.Window):
>
> def __init__(self, *args, **kwargs):
> super().__init__(*args, **kwargs)
> self.label = pyglet.text.Label(
> 'Hello, crazy world!',
> font_name='Times New Roman',
> font_size=40,
> x = self.width//2, y = self.height//3,
> anchor_x='center', anchor_y='center')
> img = pyglet.resource.image('Earth 99x99.png')
> self.sprite = pyglet.sprite.Sprite(
> img,
> x = (self.width - img.width)//2,
> y = 2*self.height//3 - img.height//2)
> self.sprite.vx, self.sprite.vy = random_velocity()
> # Bounce boundaries
> self.left = 5
> self.right = self.width - img.width - 5
> self.bottom = 5
> self.top = self.height - img.height - 5
> # Animation clock
> pyglet.clock.schedule_interval(self.update, 1 / 60.0)
>
> def on_draw(self):
> self.clear()
> self.sprite.draw()
> self.label.draw()
>
> def update(self, dt):
> sp = self.sprite
> sp.x += sp.vx
> sp.y += sp.vy
> if sp.x < self.left or sp.x > self.right:
> sp.vx = -sp.vx
> if sp.y < self.bottom or sp.y > self.top:
> sp.vy = -sp.vy
> sp.draw()
>
> MyWindow()
> pyglet.app.run()
>
>
> ===================================================================
>
>
Your update method should not call sp.draw(); You always draw in the .draw
method.
For smooth movement the position update should use the received dt, like
sp.x += sp.vx * dt
Other than that, I don't see anything strange.
What happens if you run pyglet's included sample examples/noisy/noisy.py ?
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