classes.py~

import pygame,sys,math
from random import randint
class BaseClass(pygame.sprite.Sprite):
	allsprites = pygame.sprite.Group()
	def __init__(self,x,y,image_string):
		pygame.sprite.Sprite.__init__(self)
		BaseClass.allsprites.add(self)
		self.image = pygame.image.load(image_string)
		self.rect = self.image.get_rect()
		self.rect.x=x		
		self.rect.y=y
	
	def destroy(self,ClassName):
		ClassName.List.remove(self)
		BaseClass.allsprites.remove(self)
		del self 
class Bug(BaseClass):
	List  = pygame.sprite.Group()
	going_right=True
	def __init__(self,x,y,image_string):
		BaseClass.__init__(self,x,y,image_string)
		Bug.List.add(self)
		self.velx,self.vely = 0,5
		self.jumping,self.go_down =False,False
	def motion(self,SCREENWIDTH,SCREENHEIGHT):
		predicted_location = self.rect.x +self.velx
		if predicted_location<0:
			self.velx=0
		elif predicted_location + self.rect.width>SCREENWIDTH:
			self.velx=0
		self.rect.x+=self.velx
		self.__jump(SCREENHEIGHT)
	def __jump(self,SCREENHEIGHT):
		max_jump=20
		if self.jumping:
			if self.rect.y<max_jump:
				self.go_down =True
			if self.go_down:
				self.rect.y+=self.vely
				predicted_location=self.rect.y +self.vely
				if predicted_location +self.rect.height>SCREENHEIGHT:
					self.jumping =False
					self.go_down=False
					
			else:
				self.rect.y-=self.vely
class Fly(BaseClass):
	List = pygame.sprite.Group()
	def __init__(self,x,y,image_string):
		BaseClass.__init__(self,x,y,image_string)
		Fly.List.add(self)
		self.health=100
		
		self.velx ,self.vely= randint(1,4),2
		self.amplitude,self.period = randint(20,140),randint(4,5)/100.0
	@staticmethod	
	def update_all(SCREENWIDTH,SCREENHEIGHT):
		for fly in Fly.List:
			if fly.health<=0:
				if fly.rect.y+fly.rect.height<SCREENHEIGHT:
					fly.rect.y+=fly.vely
			else:
				fly.fly(SCREENWIDTH)
			
		
	def fly(self,SCREENWIDTH):
		if self.rect.x + self.rect.width >SCREENWIDTH or self.rect.x <0:
			self.image = pygame.transform.flip(self.image,True,False)
			self.velx = -self.velx
		self.rect.x+=self.velx
		# a*sin(bx+c)+y
		self.rect.y=self.amplitude* math.sin(self.period*self.rect.x) + 140
	#@staticmethod	
	#def movement(SCREENWIDTH):
	#	for fly in Fly.List:
	#		fly.fly(SCREENWIDTH)
class BugProjectile(BaseClass):
	List=pygame.sprite.Group()
	normal_list=[]
	fire= True
	def __init__(self,x,y,if_this_variable_is_true_then_fire,image_string):
		pygame.sprite.Sprite.__init__(self)
		self.image=pygame.image.load(image_string)
		self.rect=self.image.get_rect()
		self.rect.x=x
		self.rect.y=y
		self.if_this_variable_is_true_then_fire=if_this_variable_is_true_then_fire
		self.rect.width
		try:
			last_element=BugProjectile.normal_list[-1]
			difference=abs(self.rect.x-last_element.rect.x)
			if difference <self.width:
				return 
		except Exception:
			pass
			
		BugProjectile.normal_list.append(self)
		#BaseClass.__init__(self,x,y,width,height,image_string)
		BugProjectile.List.add(self)
		self.velx= None
	@staticmethod
	def movement():
		for projectile in BugProjectile.List:
			projectile.rect.x+=projectile.velx
	def destroy(self):
		BugProjectile.List.remove(self)
		BugProjectile.normal_list.remove(self)	
		del self