Can someone help me make a score everytimes the star touch the bottom of the border

Question

#PROJECT 23: STARDUST CRUSADER
import turtle
import random
import math
from turtle import Turtle,Screen
import time
Starsspeed = 10
#------------WN-------------
wn = turtle.Screen()
wn.bgcolor('black')
#-----------Game Countdown-------
def countdown(t):
    while t > 0:
        print(t)
        t -= 1
        time.sleep(1)
    print("BLAST OFF CRUSADER!")
seconds = 10

#-----------Game Instruction--------
inp1 = input('Hi player, what is your name? : ')
print('Welcome ', str(inp1), ', the instruction below will teach you how to play this game.')
print('Instruction:')
print('To control the player, use the Left and Right Keybind')
print('Rules: You are the Pilot of the Franxx, your mission is to fly your ship and dodge the Stardust Storm, It is your duty to save your ship')
print(' countdown before Launching game')
countdown(seconds)
#-------------Screen-----------------
screen = Screen()
#-------------Border----------------
border = Turtle()
border.color('white')
border.speed(100)
border.penup()
border.goto(-300,300)
border.pendown()
border.forward(600)
border.right(90)
border.forward(600)
border.right(90)
border.forward(600)
border.right(90)
border.forward(600)
#------------Player-----------------
player = turtle.Turtle()
player.shape("triangle")
player.color('white')
player.penup()
player.setheading(90)
player.setpos(0,-200)
player.speed(5)
def TurnLeft():
    player.left(30)
def TurnRight():
    player.right(30)

#-------COLLISION-------
def isCollision(t1, t2):
    d = math.sqrt(math.pow(t1.xcor() - t2.xcor(),2) + math.pow(t1.ycor() - t2.ycor(),2))
    if d<20:
        return True
    else:
        return False

#------------Food-----------------
maxStar=10
Stars=[ ]
for i in range(maxStar):
    Stars.append(Turtle())
    Stars[i].shape('circle')
    Stars[i].penup()
    Stars[i].color('orange')
    Stars[i].goto(random.randint(-300,300),random.randint(0,300))
    Stars[i].speed(0)
    Stars[i].goto(random.randint(-300,300),random.randint(0,300))

#----------MAIN-----------

#Keybinding:
turtle.listen()
turtle.onkey(TurnLeft, "Left")
turtle.onkey(TurnRight, 'Right')

def EdgeTouched(ch):

           if ch.xcor() < -300 or ch.xcor()>300:
               ch.left(180)
           if ch.ycor() < -300 or ch.ycor()>300:
               ch.left(180)
isLosing=False
while not isLosing:
           #dieu khien star
    for Star in Stars:
           y = Star.ycor()
           y-= Starsspeed
           Star.sety(y)
           if isCollision(player,Star):
                      print('YOU FAILED')
                      isLosing=True
           if Star.ycor()<-300:
                      Star.goto(random.randint(-300,300),300)
           #dieu khien player
    player.forward(5)
    EdgeTouched(player)

Niroj · Answer 1 · Jul 30, 2020

Hello @PetesHacker ,

I saw you do collision detection there, can just check for the y coordinates. Assuming y positive is up.
You can create a Rectangle object for your entities.
x, y, width and height .

These four values together will represent a rectangle. With x, y being the bottom left corner coordinates.

Then you just do the following check if it touches the bottom of the border as: