In this article, I will create a pygame program that will change the color of a circle every time a user has clicked on the display screen. The entire game plan here is to create a circle that will fill with random colors on top of another empty circle.
# Import and initialize the pygame library import random import pygame import pygame.gfxdraw pygame.display.init() # set the caption on the panel pygame.display.set_caption("Draw Some Drawing") # windows height and width windowwidth = 600 windowheight = 600 # Print this line on output panel if the initialize process is successful if(pygame.display.get_init() == True): print("Success initialize the game!") # Initialize a window or screen for display screen = pygame.display.set_mode([windowwidth, windowheight]) # Print the x, y size of the game display window print("The windows size is " + str(pygame.display.get_window_size())) # coordinate for circle center_x = 300 center_y = 300 radius = 100 # create a list of colors colorlist = [pygame.Color(0, 0, 0), pygame.Color(255, 255, 255), pygame.Color(160, 150, 150)] # Run the game until the user asks to quit running = True while running: # If the user clicks on the 'x' button on pygame display window then set running to false for event in pygame.event.get(): if event.type == pygame.QUIT: running = False # Fill the screen with blue color screen.fill((0,0,255)) pygame.gfxdraw.circle(screen, center_x, center_y, radius, pygame.Color(0, 0, 0)) # Draw circle # check the left mouse button press state left_mouse_button_press_state = pygame.mouse.get_pressed(num_buttons=3) if(left_mouse_button_press_state == True): # if the user has clicked the left mouse button... # draw and fill circle with selected color pygame.gfxdraw.filled_circle(screen, center_x, center_y, radius, colorlist[random.randint(0, 2)]) pygame.display.flip() # refresh the screen # Quit the game pygame.display.quit()
A very simple program indeed, you can further modify it to make the circle changes color only if the user has clicked within that circle!