code: def initalize(self, physics_dta):
          
          self.rotation = random.randint(self.rotation_range[0], self.rotation_range[1])
          self.current_time = 0.0
          self.color = self.start_color
          self.scale = self.start_scale
          self.physics = physics_dta
docs: Prepare our particle for use.
          physics_dta describes the velocity, coordinates, and acceleration of the particle.