python pygameのエラー解決

前提・実現したいこと

python　pygameでゲームを作成しています。グループクラス.draw(screen)で画像を表示させたいのですが実行するとエラーを図れてしまいます。エラーにはmachineにimageがないといわれているのですが、まずimageという変数を用いていないのでよくわかりません。ご協力お願い致します。

発生している問題・エラーメッセージ

AttributeError: 'machine' object has no attribute 'image'

該当のソースコード

python3
from pygame.locals import *
import pygame


FPS = 60    # Frame per Second 毎秒のフレーム数
LOOP=True
jump=False
Right=False
Left=False

machine_img="pilot.png"
machine_img2="pilot2.png"
machine_img3="pilot3.png"
machine_img4="pilot4.png"
target_img="monster1.png"
mouse_point="mouse_point.png"



class machine(pygame.sprite.Sprite):
    def __init__(self, x, y, vx, vy, w, h):
        super().__init__()
        self.x, self.y=(x, y)
        self.vx, self.vy=(vx, vy)
        self.w, self.h=(w, h)
        self.grav = 16
        self.rect = pygame.Rect(self.x, self.y, self.w, self.h)
        self.image1 = pygame.image.load(machine_img).convert()
        self.image1=pygame.transform.scale(self.image1, (70, 70))
        self.jump=False

    def LEFT(self): 
        if 0 <= self.rect.left-10 <= 700:
            self.rect.move_ip(-self.vx, 0)
        self.image1 = pygame.image.load(machine_img3).convert()
        self.image1=pygame.transform.scale(self.image1, (70, 70))
        
    def RIGHT(self): 
        if 0 <= self.rect.right+10 <= 700:
            self.rect.move_ip(self.vx, 0)
        self.image1 = pygame.image.load(machine_img).convert()
        self.image1=pygame.transform.scale(self.image1, (70, 70)) 

    def DOWN(self):
        if self.rect.y<=self.y+self.h/2:
            self.rect.move_ip(0,self.vy)

class target1(pygame.sprite.Sprite):
    def __init__(self, x, y, vx, w, h):
        self.x, self.y = (x, y)
        self.vx = vx
        self.w, self.h = (w, h)
        self.rect=pygame.Rect(self.x, self.y, self.w, self.h)
        self.image2 = pygame.image.load(target_img).convert()
        self.image2=pygame.transform.scale(self.image2, (80, 80))
        self.time=0

    def draw_target1(self):
        self.rect=pygame.draw.rect(screen, (255, 255, 255), (self.x, self.y, 20, 30))

    def move_target1(self):
        self.time+=1
        if self.time<=30:
            self.rect.move_ip(self.vx, 0) 
        elif 30<self.time<=60:
            self.rect.move_ip(-self.vx, 0) 
        else:
            self.time=0
                
screen = pygame.display.set_mode((800, 450))
clock = pygame.time.Clock()

own_machine=pygame.sprite.Group()
own_machine.add(machine(350,300,10,10,30,40))
tar1=target1(200, 100, 1, 40, 30)

mouse_x, mouse_y=(20,20)
mouse_point = pygame.image.load(mouse_point).convert()
mouse_point=pygame.transform.scale(mouse_point, (70, 70))

while LOOP:
    for event in pygame.event.get():
        if event.type == pygame.QUIT: LOOP = False
    clock.tick(FPS)
    pressed_keys = pygame.key.get_pressed()
    for event in pygame.event.get():
        if event.type == MOUSEMOTION:
            mouse_x, mouse_y=event.pos
            mouse_x -= int(mouse_point.get_width() / 2)
            mouse_y -= int(mouse_point.get_height() / 2)
    if pressed_keys[pygame.K_UP]:
        jump=True     
    if pressed_keys[pygame.K_LEFT]:    
        own_machine.LEFT()
        Right=False
        Left=True     
    if pressed_keys[pygame.K_RIGHT]:  
        own_machine.RIGHT()
        Right=True
        Left=False 
    if event.type == KEYDOWN: 
        if pressed_keys[pygame.K_DOWN]:
            own_machine.DOWN()
            own_machine.image1 = pygame.image.load(machine_img2).convert()
            own_machine.image1=pygame.transform.scale(own_machine.image1, (70, 70))
            if Left:
                own_machine.image1 = pygame.image.load(machine_img4).convert()
                own_machine.image1=pygame.transform.scale(own_machine.image1, (70, 70))

    if event.type == KEYUP: 
        if own_machine.rect.y>=own_machine.y+10:
            own_machine.rect.move_ip(0,-own_machine.vy)
            own_machine.image1 = pygame.image.load(machine_img).convert()
            own_machine.image1=pygame.transform.scale(own_machine.image1, (70, 70))
            if Left:
                own_machine.image1 = pygame.image.load(machine_img3).convert()
                own_machine.image1=pygame.transform.scale(own_machine.image1, (70, 70))   

    if jump:
            own_machine.rect.move_ip(0, -own_machine.grav)
            own_machine.grav-=1
            if own_machine.grav<-16:
                own_machine.grav=16
                jump=False

    screen.blit(mouse_point, (mouse_x, mouse_y))
    screen.blit(tar1.image2, tar1.rect)
    tar1.move_target1()  
    own_machine.draw(screen)
    pygame.display.flip()
    screen.fill((0, 0, 0)) 
pygame.quit()