python - argument must be rect style object - Pygame -

disclaimer: know other people on site have had error it's been in different contexts , fixes don't seem work here.

hey stackoverflow, i've been making sideways space invaders game, ship follows mouse's y position stays on left, , clicking shoots bullet. enemies spawn randomly right , fly left, , objects removed once each side of screen. works fine, when tried implement collision detection see when shot hits enemy, error:

typeerror: argument must rect style object. 

it points line "return hitbox.colliderect(target.rect)". try , work out causing made 'print' lines below see 'target.rect' (and whether proper rect object), , seemed same style shot's own rect, i'm lost why colliderect doesn't accept it.

i've annotated pretty everything, sorry if it's insult intelligence should make things easier.

class causes problems:

class gameobject: def __init__(self, image, height, speed):     self.speed = speed     self.image, self.rect = load_image("shot.dsf", -1) #loads image , creates rectange      self.pos = image.get_rect().move(0, height) def move(self):     self.pos = self.pos.move(self.speed, 0) #moves along     self.rect = [self.pos, 32, 32] #updates position of rectange. without rectangle stays in top left corner image moves     if self. pos.right > 1400: #checks if shot goes offscreen         objects.remove(self) #removes def hitreg(self,target):     hitbox = self.rect #creates hitbox of it's own rectangle     return hitbox.colliderect(target.rect) #should return true if hitbox collides rect of target, returns error     print("own rect: ",self.rect) #debug purposes, returns ('own rect: [<rect(1350, 245, 32, 32)>, 32, 32])     print("target rect: ",target.rect) #debug purposes, returns ('target rect: [<rect(360, 479, 128, 64)>, 128, 64]) 

main loop

r.drawframe() #renders frame while running: sleep(0.0166) #make sure renders @ 60fps rand = rnd(10,20) #generates random number 10 20 pos = pygame.mouse.get_pos() #gets mouse position event in pygame.event.get():     if event.type == mousebuttonup: #prevents hang         none      if event.type == mousebuttondown: #creates shot if mousebuttondown, @ mouse height random speed         o = gameobject(shot, pos[1], rand)         objects.append(o) if rnd(1,120) == 60: #randomely spawns enemy ships     s = enemyship(enemya, rnd(10,890), rand) #enemya filename     ships.append(s) o in objects: #for each shot     s in ships: #for each enemy ship         if o.hitreg(s): #calls hitreg function, s being target             s.takedamage()             score = score + 10 #increases score r.drawframe() #renders frame 

if output shown in source code can trusted, debug statements show neither self.rect nor target.rect "rect style" objects. appear lists consisting of rect followed 2 integers such this:

own rect: [<rect(1350, 245, 32, 32)>, 32, 32]) target rect: [<rect(360, 479, 128, 64)>, 128, 64] 

the move() method responsible changing self.rect "normal" rect list above, modified self.rect not behave rect. perhaps in hitreg() should calling hitbox = self.rect[0].

anyway, in case, suspect output of debug statements shown incorrect. value self.rect rect (because lists not have method colliderect(), colliderect() seem called), , target.rect list. target.rect of type enemyship, don't show code that, not possible tell going on there (although 1 guess move() has been called on , it's self.rect corrupted).

i suggest capture real debug output , add question. helpful if post accurate code, because there @ least 1 syntax error, e.g. in line:

if self. pos.right > 1400: 

and code enemyship like?