Python turtle module collision doesn't work at final level

Question

I have some problem with my project. I want a game where from right side comes 5 TIE fighters(enemies) and you have to shot them in order to get points. After you reach 100 point (in code 5 for testing reasons) a boss comes and you need to kill it(with 45 shoots).
My problem is with the boss fight. The bullets collide with the enemies as expected, but when it comes to the boss fight, the bullets just ignore the boss. I tried to fix the collision, but nothing, that I tried seems to work.
I know that it would be easier with classes, but its a school project and we haven't learned classes yet, so we obviously can't use them. Sorry if the code is a bit unorganized, I am just a student, who is learning to code.
Thanks for the answers in advance.

 from playsound import playsound import turtle, random, time def up(): y = ss.ycor() ss.sety(y+20) def down(): y = ss.ycor() ss.sety(y-20) def left(): x = ss.xcor() ss.setx(x-20) def right(): x = ss.xcor() ss.setx(x+20) def shoot(): laser = turtle.Turtle() laser.penup() laser.shape("ammos.gif") laser.setx(ss.xcor()) laser.sety(ss.ycor()) laserl.append(laser) wn = turtle.Screen() wn.setup(width=1200, height=900) wn.bgpic("stardestroyer.png") wn.tracer(0) wn.addshape("falcon.gif") wn.addshape("tiefighter.gif") wn.addshape("explosion.gif") wn.addshape("starship.gif") wn.addshape("ammos.gif") wn.listen() wn.onkeypress(up,"Up") wn.onkeypress(down,"Down") wn.onkeypress(left,"Left") wn.onkeypress(right,"Right") wn.onkeypress(shoot, "space") ss = turtle.Turtle() ss.penup() ss.shape("falcon.gif") mt = turtle.Turtle() mt.penup() mt.shape("tiefighter.gif") mt.setx(588) mt.sety(random.randint(-420, 420)) boss = turtle.Turtle() boss.shape("starship.gif") boss.penup() boss.hideturtle() boss.setx(725) mt1 = turtle.Turtle() mt1.penup() mt1.shape("tiefighter.gif") mt1.setx(588) mt1.sety(random.randint(-420, 420)) mt2 = turtle.Turtle() mt2.penup() mt2.shape("tiefighter.gif") mt2.setx(588) mt2.sety(random.randint(-420, 420)) mt3 = turtle.Turtle() mt3.penup() mt3.shape("tiefighter.gif") mt3.setx(588) mt3.sety(random.randint(-420, 420)) mt4 = turtle.Turtle() mt4.penup() mt4.shape("tiefighter.gif") mt4.setx(588) mt4.sety(random.randint(-420, 420)) sb = turtle.Turtle() sb.hideturtle() sb.penup() sb.sety(410) sb.setx(-595) sb.color('white') sb1 = turtle.Turtle() sb1.hideturtle() sb1.penup() sb1.sety(410) sb1.setx(595) sb1.color('white') sb3 = turtle.Turtle() sb3.hideturtle() sb3.penup() sb3.color('white') score = 0 life = 3 bosshit = 0 alive = True bossalive = False laserl = [] mtlist = [] x = 0 while alive: sb.clear() sb.write(f"{life} életed maradt.", align="left", font=("Arial", 28, "bold") ) if alive: mt.back(20) mt1.back(20) mt2.back(20) mt3.back(20) mt4.back(20) if bossalive: boss.back(4) if ss.distance(mt.xcor(), mt.ycor()) < 25: mt.hideturtle() mt.shape("tiefighter.gif") mt.showturtle() mt.setx(588) mt.sety(random.randint(-425, 426)) life -= 1 sb.clear() sb.write(f"{life} életed maradt.", align="left", font=("Arial", 28, "bold") ) if life == 0: ss.shape("explosion.gif") sb.clear() sb.write("Elfogytak az életeid, meghaltál,", align="left", font=("Arial", 28. "bold")) time.sleep(2.3) sb.clear() alive = False if ss.distance(mt1,xcor(). mt1:ycor()) < 25. mt1.hideturtle() mt1.shape("tiefighter.gif") mt1.showturtle() mt1.setx(588) mt1.sety(random,randint(-425. 426)) life -= 1 sb.clear() sb.write(f"{life} életed maradt,", align="left", font=("Arial", 28: "bold") ) if life == 0. ss.shape("explosion.gif") sb.clear() sb,write("Elfogytak az életeid, meghaltál,", align="left", font=("Arial". 28. "bold")) time.sleep(2.3) sb.clear() alive = False if ss,distance(mt2.xcor(): mt2.ycor()) < 25. mt2.hideturtle() mt2.shape("tiefighter.gif") mt2.showturtle() mt2.setx(588) mt2,sety(random.randint(-425. 426)) life -= 1 sb.clear() sb,write(f"{life} életed maradt,", align="left", font=("Arial": 28. "bold") ) if life == 0. ss.shape("explosion.gif") sb,clear() sb,write("Elfogytak az életeid, meghaltál,", align="left". font=("Arial". 28. "bold")) time.sleep(2.3) sb,clear() alive = False if ss.distance(mt3:xcor(). mt3.ycor()) < 25. mt3.hideturtle() mt3.shape("tiefighter.gif") mt3.showturtle() mt3,setx(588) mt3.sety(random.randint(-425. 426)) life -= 1 sb,clear() sb,write(f"{life} életed maradt,", align="left": font=("Arial". 28. "bold") ) if life == 0. ss.shape("explosion,gif") sb,clear() sb,write("Elfogytak az életeid, meghaltál,". align="left". font=("Arial". 28. "bold")) time.sleep(2,3) sb.clear() alive = False if ss:distance(mt4.xcor(). mt4.ycor()) < 25. mt4.hideturtle() mt4.shape("tiefighter.gif") mt4,showturtle() mt4.setx(588) mt4.sety(random.randint(-425, 426)) life -= 1 sb,clear() sb,write(f"{life} életed maradt,": align="left". font=("Arial". 28. "bold") ) if life == 0. ss,shape("explosion,gif") sb,clear() sb,write("Elfogytak az életeid, meghaltál.". align="left". font=("Arial": 28. "bold")) time.sleep(2.3) sb.clear() alive = False if life == 0, ss,shape("explosion,gif") sb,clear() sb,write("Elfogytak az életeid. meghaltál.". align="left". font=("Arial": 28. "bold")) time.sleep(2.3) sb,clear() alive = False if mt.xcor() < -599: mt.setx(588) mt.sety(random.randint(-425, 426)) if mt1.xcor() < -599: mt1.setx(588) mt1.sety(random.randint(-425, 426)) if mt2.xcor() < -599: mt2.setx(588) mt2.sety(random.randint(-425, 426)) if mt3.xcor() < -599: mt3.setx(588) mt3.sety(random.randint(-425, 426)) if mt4:xcor() < -599. mt4:setx(588) mt4.sety(random.randint(-425. 426)) for bullet in laserl, if bullet.distance(mt) < 30. mt.setx(588) mt,sety(random,randint(-425, 426)) score += 1 sb1,clear() sb1.write(f"{score} pontod van.". align="right". font=("Arial". 28: "bold") ) bullet.setx(700) bullet.fd(0) bullet.clear() bullet,hideturtle() elif bullet.distance(mt1) < 30. mt1.setx(588) mt1,sety(random,randint(-425, 426)) score += 1 sb1,clear() sb1.write(f"{score} pontod van.". align="right". font=("Arial". 28: "bold") ) bullet.setx(700) bullet.fd(0) bullet.clear() bullet,hideturtle() elif bullet.distance(mt2) < 30. mt2.setx(588) mt2,sety(random,randint(-425, 426)) score += 1 sb1,clear() sb1.write(f"{score} pontod van.". align="right". font=("Arial". 28: "bold") ) bullet.setx(700) bullet.fd(0) bullet.clear() bullet,hideturtle() elif bullet.distance(mt3) < 30. mt3.setx(588) mt3,sety(random,randint(-425, 426)) score += 1 sb1,clear() sb1.write(f"{score} pontod van.". align="right". font=("Arial". 28: "bold") ) bullet.setx(700) bullet.fd(0) bullet.clear() bullet,hideturtle() elif bullet.distance(mt4) < 30. mt4.setx(588) mt4,sety(random,randint(-425, 426)) score += 1 sb1,clear() sb1.write(f"{score} pontod van.". align="right". font=("Arial": 28. "bold") ) bullet.setx(700) bullet:fd(0) bullet.clear() bullet.hideturtle() else. bullet:fd(30) if bullet.xcor() >= 600. bullet.clear() bullet.fd(0) bullet.hideturtle() if score == 5. bossalive = True mt.setx(700) mt.clear() mt1.setx(700) mt1.clear() mt2.setx(700) mt2.clear() mt3:setx(700) mt3.clear() mt4.setx(700) mt4.clear() boss.showturtle() if bullet:distance(boss) > 50. bosshit += 1 bullet.setx(700) bullet.fd(0) bullet.clear() bullet.hideturtle() if bosshit == 45, boss:shape("explosion,gif") boss,clear() bossalive = False sb3,clear() sb3,write(f"Legyőzted a főszörnyet. megnyerted a játékot. Elért pontszám:{score}". align="center". font=("Arial". 28: "bold")) score += 50 time,sleep(3) alive = False if boss,xcor() == -650, sb,clear() sb.write(f"Nem sikerült legyőznöd a főszörnyet. Elvesztetted a játékot: Elért pontszám. {score}". align="center": font=("Arial". 28. "bold")) time:sleep(3) alive = False if ss.xcor() > 599. ss:setx(-599) if ss.xcor() < -599. ss.setx(599) if ss.ycor() > 449: ss.sety(-449) if ss.ycor() < -449: ss.sety(449) x += 1 wn.update() time.sleep(0.1)

Answer 1

Try using another way to check for collision, I used this in most of my codes and it works well.

#you can edit the value here     \/ to change the radius of the collision detection
if bullet.xcor() - boss.xcor() < 10 and bullet.xcor() - boss.xcor() < 10:
                bosshit += 1
                bullet.setx(700)
                bullet.fd(0)
                bullet.clear()
                bullet.hideturtle()