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Python program to create a bouncing blue dot
within a red square using Pygame
Here is the Python code to create a blue dot that bounces within the walls of a red square using the Pygame library: import pygame
Initialize Pygame
pygame.init()
Define the screen dimensions
width = 500 height = 500 screen = pygame.display.set_mode((width, height))
Define the colors
blue = (0, 0, 255) red = (255, 0, 0)
Define the coordinates and velocity of the dot
x = 50 y = 50 vel_x = 5 vel_y = 5
Define the size and position of the square
square_size = 100 square_x = (width - square_size) / 2 square_y = (height - square_size) / 2
Main game loop
running = True while running:
Handle events
for event in pygame.event.get(): if event.type == pygame.QUIT: running = False
Move the dot
x += vel_x y += vel_y
Bounce within the square
if x < square_x:
x = square_x vel_x = -vel_x elif x > square_x + square_size: x = square_x + square_size vel_x = -vel_x if y < square_y: y = square_y vel_y = -vel_y elif y > square_y + square_size: y = square_y + square_size vel_y = -vel_y
Draw the background and square
screen.fill((255, 255, 255)) pygame.draw.rect(screen, red, (square_x, square_y, square_size, square_size))
Draw the dot
pygame.draw.circle(screen, blue, (x, y), 10)
Update the screen
pygame.display.flip()
Quit Pygame
pygame.quit() This program uses a main loop that runs until the user closes the game window. Within the loop, Pygame events are handled, the dot is moved, and everything is drawn on the screen. The dot bounces within the square using a series of conditional checks. Finally, the screen is updated with pygame.display.flip() and Pygame is exited at the end of the program with pygame.quit().
