import pygame
pygame.init()

win = pygame.display.set_mode((500, 500))

pygame.display.set_caption("amaan dheere")
screenwidht = 500
x = 50
y = 425
width = 40
vel = 5
height = 6

isJump = False
jumpCount = 10

run = True
while run:
    pygame.time.delay(100)

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False
    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT] and x > vel:
        x -= vel
    if keys[pygame.K_RIGHT] and x < 500 - width - vel:
        x += vel
    if not(isJump):
        if keys[pygame.K_UP] and y > vel:
              y -= vel
        if keys[pygame.K_DOWN] and y < 500 - height - vel:
              y += vel
    if keys[pygame.K_SPACE]:
        isJump = True
    else:
        if jumpCount >= -10:
            neg = 1
            if jumpCount < 0:
                neg = -1
            y -= (jumpCount ** 2) * 0.5 * neg
            jumpCount -= 1
        else:
            isjump = False
            jumpCount = 10

    win.fill((0, 0, 0))

    pygame.draw.rect(win, (255,0,0),(x, y, width, height))
    pygame.display.update()
pygame.quit()