double cannon example.py

double cannon example.py

from scene import *
import math

class MyScene (Scene):
  def setup(self):
    # This will be called before the first frame is drawn.
    # Set up the root layer
    self.root_layer = Layer(self.bounds)
    center = self.bounds.center()
    self.cannon_size = 200
    # add layer for the first cannon
    self.layer1 = Layer(Rect(200, 0, self.cannon_size, self.cannon_size))
    self.layer1.image = '_cannon'
    self.root_layer.add_layer(self.layer1)
    self.angle = 0
    self.counter_clock_wise = True
    # add layer for the second cannon
    self.layer2 = Layer(Rect(self.bounds.w-self.cannon_size-200, 0, self.cannon_size, self.cannon_size))
    self.layer2.image = '_cannon'
    self.root_layer.add_layer(self.layer2)

  def draw(self):
    if self.angle >= 180:
      self.counter_clock_wise = False 
    if self.angle <= 0:
      self.counter_clock_wise = True 
    
    if self.counter_clock_wise:
      self.angle += 1
    else:
      self.angle -= 1
    
    background(0.40, 0.80, 1.00)
    self.root_layer.update(self.dt)
    self.root_layer.draw()
    self.layer1.animate('rotation', self.angle, 1/60.0)
    self.layer2.animate('rotation', self.angle, 1/60.0)
 
  def touch_began(self, touch):
    pass
  
  def touch_moved(self, touch):
    pass
  
  def touch_ended(self, touch):
    pass

run(MyScene())