christmas_animation.py

import turtle
import random

# If using a web-based platform, set to `True`
# web_based = True
web_based = False

if web_based:
    i_scale = 1.5
    snow_size = 4
    snow_speed = 3
    draw_speed = 10
    rate_of_snow_balls = 6
else:
    i_scale = 1
    snow_size = 7
    snow_speed = 2
    draw_speed = 10
    rate_of_snow_balls = 2

width = 600 / i_scale
height = 600 / i_scale

screen = turtle.Screen()
if not web_based:
    screen.setup(width, height)
    screen.title("Happy Christmas from CodeToday")


def make_triangle(x, y, size, outline, triangle):
    triangle.hideturtle()
    triangle.penup()
    triangle.setposition(x, y)
    triangle.pensize(3)
    if outline:
        triangle.pendown()
    if not outline:
        triangle.fillcolor("forest green")
        triangle.begin_fill()
    triangle.setposition(x + size, y - size)
    triangle.setposition(x - size, y - size)
    triangle.setposition(x, y)
    if not outline:
        triangle.end_fill()


def make_ball(x, y, size, colour, ball):
    ball.hideturtle()
    ball.penup()
    ball.setposition(x, y)
    ball.color(colour)
    ball.dot(size)


def move_snow(snow):
    position = snow.position()
    snow.clear()
    make_ball(
        position[0],
        position[1] - snow_speed,
        snow_size,
        "white",
        snow,
    )


def snow_fall():
    rand_make_snow = random.randint(0, rate_of_snow_balls)
    if rand_make_snow == 0:
        snow = turtle.Turtle()
        snow.hideturtle()
        snow.penup()
        list_of_snow.append(snow)
        make_ball(
            random.randint(int(-width / 2), int(width / 2)),
            width / 2,
            snow_size,
            "white",
            snow,
        )
    for snow in list_of_snow:
        move_snow(snow)
        if snow.position()[1] <= -width / 2:
            snow.clear()
            list_of_snow.remove(snow)
            del snow
    screen.update()


# make tree (main part)
triangle_1 = turtle.Turtle()
triangle_1.speed(draw_speed)
outline = True
for repeat in range(2):
    make_triangle(0, width / 3, width / 6, outline, triangle_1)
    make_triangle(0, width / 4, width / 4, outline, triangle_1)
    make_triangle(0, width / 8, width / 3, outline, triangle_1)
    outline = False

screen.tracer(0)
stem = turtle.Turtle()
# white snowy ground
stem.penup()
stem.hideturtle()
stem.setposition(-width, -width / 3)
stem.color("white")
stem.begin_fill()
stem.setposition(width, -width / 3)
stem.setposition(width, -width / 2)
stem.setposition(-width, -width / 2)
stem.end_fill()
screen.update()

# tree stem
stem.color("brown")
stem.setposition(-width / 30, -width / 4.8)
screen.tracer(1)
stem.pendown()
stem.begin_fill()
stem.setposition(width / 30, -width / 4.8)
stem.setposition(width / 30, -3 * width / 8)
stem.setposition(-width / 30, -3 * width / 8)
stem.setposition(-width / 30, -width / 4.8)
stem.end_fill()

screen.bgcolor("sky blue")

# decorations: balls
screen.tracer(2)
ball_colours = ["red", "red", "red", "gold", "violet", "white"]
ball_positions = [
    (-width / 30, width / 4),
    (3 * width / 40, width / 5),
    (-width / 20, width / 6),
    (width / 30, width / 9),
    (-width / 12, width / 30),
    (width / 12, width / 24),
    (-width / 9, -width / 20),
    (width / 8, -width / 15),
    (0, -width / 6),
    (-width / 6, -width / 6),
    (width / 5, -width / 7.5),
]
for position in ball_positions:
    make_ball(
        position[0],
        position[1],
        20 / i_scale,
        random.choice(ball_colours),
        turtle.Turtle(),
    )
    screen.update()

# snow is falling…
list_of_snow = []

screen.tracer(0)
for _ in range(50):
    snow_fall()

text_1 = turtle.Turtle()
text_1.hideturtle()
text_1.penup()
text_1.setposition(0, width / 2.7)
text_1.color("red")
text_1.write(
    "Merry Christmas",
    font=("Apple Chancery", max(int(30 / i_scale), 15), "bold"),
    align="center",
)

for _ in range(25):
    snow_fall()

text_1.setposition(width / 60, -width / 2.18)
text_1.color("black")
text_1.write(
    "from",
    font=(
        "Apple Chancery",
        max(int(20 / i_scale), 10),
        "normal",
    ),
    align="center",
)
if web_based:
    text_1.setposition(width / 6, -width / 2.14)
else:
    text_1.setposition(width / 7.5, -width / 2.14)
text_1.color(242 / 255, 114 / 255, 124 / 255)
text_1.write(
    "code",
    font=("Avenir", max(int(30 / i_scale), 15), "normal"),
    align="center",
)
if web_based:
    text_1.setposition(width / 2.95, -width / 2.14)
else:
    text_1.setposition(width / 3.95, -width / 2.14)
text_1.color(0, 160 / 255, 193 / 255)
text_1.write(
    "today",
    font=("Avenir", max(int(30 / i_scale), 15), "normal"),
    align="center",
)

if web_based:
    for _ in range(300):
        snow_fall()
else:
    while True:
        snow_fall()

turtle.done()