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class_ball.py

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+import pygame
+class ball(object):
+    #global pygame
+    def __init__(self,class_lst,x=320,y=240,speed=3):#pass a shared globals object
+        import class_ball
+        mouse_down=False
+        self.x=x
+        self.y=y
+        self.speed=speed
+        self.dir=None
+        self.ball=pygame.image.load("gun.png")
+        self.ballrect=self.ball.get_rect()
+        #mouse_down=False; # needs to be in a seperate object - make the event stream step-by-step by caching during every step
+
+    def mouse_handler(self):
+        if pygame.event.get(pygame.MOUSEBUTTONDOWN) or self.__class__.mouse_down == True:
+            self.x=self.mouse_x
+            self.y=self.mouse_y
+            self.__class__.mouse_down=True
+            print 6
+
+        if pygame.event.get(pygame.MOUSEBUTTONUP):
+            self.__class__.mouse_down=False
+
+    def step(self):
+        self.mouse_x,self.mouse_y=pygame.mouse.get_pos()
+        self.diff_x=self.mouse_x-self.x
+        self.diff_y=self.mouse_y-self.y
+        self.diff_rad=math.atan2(self.diff_y,self.diff_x)
+        self.x+=self.speed*math.cos(self.diff_rad)
+        self.y+=self.speed*math.sin(self.diff_rad)
+        self.ballrect.center=(self.x,self.y)
+
+    def draw(self):
+        screen.blit(self.ball, self.ballrect)
+
+
+    def update(self):
+        self.step()
+        self.mouse_handler()
+        self.draw()
+