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#!/usr/bin/env python
"""Classic game of tennis."""
# std imports
from math import floor
# local
from blessed import Terminal
def roundxy(x, y):
return int(floor(x)), int(floor(y))
term = Terminal()
x, y, xs, ys = 2, 2, 0.4, 0.3
with term.cbreak(), term.hidden_cursor():
# clear the screen
print(term.home + term.black_on_olivedrab4 + term.clear)
# loop every 20ms
while term.inkey(timeout=0.02) != 'q':
# erase,
txt_erase = term.move_xy(*roundxy(x, y)) + ' '
# bounce,
if x >= (term.width - 1) or x <= 0:
xs *= -1
if y >= term.height or y <= 0:
ys *= -1
# move,
x, y = x + xs, y + ys
# draw !
txt_ball = term.move_xy(*roundxy(x, y)) + '█'
print(txt_erase + txt_ball, end='', flush=True)
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