Last Updated on 2021-12-04 by Clay
In a computer game, the buttons are very, very important components. We may need to design some button for user exit, or trigger some game events... etc.
But the Pygame game engine framework is more basically than others, so it have no any default button component, you need to write a Rect widget and add some color and text to be a button, and detect the mouse click event.
The mouse click detecting is so easy at Rect component, just use collidepoint() function to detect the click position.
The detail implement method as follows.
Complete Code
# coding: utf-8
import pygame
def main():
# Settings
width = 800
height = 600
color_bg = (0, 0, 0)
color_text = (200, 200, 200)
button_clicked = False
running = True
# Init
pygame.init()
screen = pygame.display.set_mode((width, height))
pygame.display.set_caption("Rect Demo")
# Text
font = pygame.font.SysFont("Arial", 35)
text = font.render("Button", True, color_text)
text_clicked = font.render("Clicked", True, color_text)
text_rect = text_clicked.get_rect(center=(width/2, height/2))
# Run
while running:
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
if event.type == pygame.MOUSEBUTTONDOWN:
button_clicked = True if text_rect.collidepoint(event.pos) else False
# Screen
screen.fill(color_bg)
# Draw
pygame.draw.rect(screen, (100, 100, 100), text_rect)
if button_clicked:
screen.blit(text_clicked, text_rect)
else:
screen.blit(text, text_rect)
# Updates
pygame.display.update()
if __name__ == "__main__":
main()
Output:
After clicking, the button text will change.
References
- https://pythonprogramming.net/pygame-buttons-part-1-button-rectangle/
- https://www.geeksforgeeks.org/how-to-create-buttons-in-a-game-using-pygame/