# This game is from the official documentation of freegames

# https://pypi.org/project/freegames/

# pip install freegames

# Tap on Screen to Fire

# import modules

from random import randrange

import turtle as t

from freegames import vector

# Set window title, color and icon

t.title("Canon Fire")

root = t.Screen()._root

root.iconbitmap("logo-ico.ico")

t.bgcolor('#99ffbb')

ball = vector(-200, -200)

speed = vector(0, 0)

targets = []

# Functions

# Respond to screen tap

def tap(x, y):

if not inside(ball):

ball.x = -199

ball.y = -199

speed.x = (x + 200) / 25

speed.y = (y + 200) / 25

# Return True if xy within screen

def inside(xy):

return -200 < xy.x < 200 and -200 < xy.y < 200

# Draw ball and targets

def draw():

t.clear()

for target in targets:

t.goto(target.x, target.y)

t.dot(20, '#8000ff')

if inside(ball):

t.goto(ball.x, ball.y)

t.dot(6, '#cc0000')

t.update()

# Move ball and targets

def move():

if randrange(40) == 0:

y = randrange(-150, 150)

target = vector(200, y)

targets.append(target)

for target in targets:

target.x -= 0.5

if inside(ball):

speed.y -= 0.35

ball.move(speed)

dupe = targets.copy()

targets.clear()

for target in dupe:

if abs(target - ball) > 13:

targets.append(target)

draw()

for target in targets:

if not inside(target):

return

t.ontimer(move, 50)

t.setup(420, 420, 370, 0)

t.hideturtle()

t.up()

t.tracer(False)

t.onscreenclick(tap)

move()

t.done()