# drawing.py
# ----------
# By Hope Wright
#
# a turtle  and bubbles will be drawn and animate swimming across the screen
# phase 2 would be to have it start smaller and grow is it swims across the screen to look like it's getting closer
# phase 3 would be to animate the bubbles.

from turtle import *
from superturtle.movement import fly
from superturtle.animation import animate
from superturtle.easing import easeInQuad
import math
import random

def draw_turtle(size):


    #draw an oval for the shell
    height = size*2
    width = size*1.5
    
    steps = 100
    for i in range(steps + 1):
        angle = 2 * math.pi * i / steps
        x = (width) * math.cos(angle)
        y = (height) * math.sin(angle)
        goto(x,y)

    #move to top of for head
    
    penup()
    left(90)
    forward(size*4)
    left(90)
    forward(size*1.5)
    pendown()

    #draw a circle for the head
    circle(size)

    #draw some lines on the shell
    penup()
    left(90)
    forward(size*2)
    pendown()
    forward(size*4)
    right(180)
    forward(size*2)
    left(90)
    forward(size*1.5)
    penup()
    left(180)
    forward(size*1.5)
    pendown()

def draw_flipper(size):
    left(90)

def draw_bubble(b_size):
    pencolor("blue")
    circle(b_size)

def place_bubbles(number):
    #draws bubbles of random sizes and locations in each of the 4 quadrants
    for i in range(number):
        x = random.random()*400
        y = random.random()*200
        fly(x,y)
        b_size = random.random()*15
        draw_bubble(b_size)
    for i in range(number):
        x = random.random()*400
        y = random.random()*200
        fly(-x,y)
        b_size = random.random()*15
        draw_bubble(b_size)
    for i in range(number):
        x = random.random()*400
        y = random.random()*200
        fly(x,-y)
        b_size = random.random()*15
        draw_bubble(b_size)
    for i in range(number):
        x = random.random()*400
        y = random.random()*200
        fly(-x,-y)
        b_size = random.random()*15
        draw_bubble(b_size)
    fly(0,0)


#pass the number of bubbles you want in each quadrant (so it will be 4 X what you pass)
for frame in animate(50, loop=True):
    x = frame.interpolate(-10, 10)
    y = frame.interpolate(20, -10, easing=easeInQuad)
    fly(x, y)
    place_bubbles(1)

draw_turtle(20)

done()