hover.py

import math
import pygame
import sys

pygame.init()

screen = pygame.display.set_mode((800,400))
pygame.display.set_caption('Game Title')

clock = pygame.time.Clock()
angle=0
moveAmt = 1
x1=100
y1=100

while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()

    angle += 10
    y1 += math.sin(math.radians(angle))*moveAmt

    screen.fill((70,70,70))

    pygame.draw.circle(screen, 'red', (x1,y1), 5)

    pygame.display.update()     ## vs. flip()
    clock.tick(60)