I am attempting to implement a simple Pygame script that is supposed to:
- First, check for when the user presses the Space key;
- On Space keypress, display some text; then
- Pauses for 2 seconds and then update the screen to its original state.
Note that all of the above events must occur sequentially, and cannot be out of order.
I am encountering problems where the program first pauses, then displays the text only appears for a split second (or not at all) before the screen updates to its original state.
The program seems to have skipped over step 2 and proceeded with the pause in step 3 before displaying text. My code is as follows:
import pygame import sys from pygame.locals import * WHITE = (255, 255, 255) BLACK = (0, 0, 0) pygame.init() wS = pygame.display.set_mode((500, 500), 0, 32) # Method works as intended by itself def create_text(x, y, phrase, color): """ Create and displays text onto the globally-defined `wS` Surface (params in docstring omitted) """ # Assume that the font file exists and is successfully found font_obj = pygame.font.Font("./roboto_mono.ttf", 32) text_surface_obj = font_obj.render(phrase, True, color) text_rect_obj = text_surface_obj.get_rect() text_rect_obj.center = (x, y) wS.blit(text_surface_obj, text_rect_obj) while True: wS.fill(BLACK) for event in pygame.event.get(): if event.type == KEYDOWN and event.key == K_SPACE: # Snippet containing unexpected behavior create_text(250, 250, "Hello world!", WHITE) pygame.display.update() pygame.time.delay(2000) # Snippet end if event.type == QUIT: pygame.quit() sys.exit(0) pygame.display.update() Thanks in advance!
2 Answers
Answers 1
For some reason the program worked for me with the only thing I changed was the font. This is the same as what @Omega0x013 is doing, but you have an unlimited framerate. It works because FPS.tick() returns the amount of time since it was last called, if you don't specify a frame rate, it does not hold the program.
import pygame import sys from pygame.locals import * displayText = False WHITE = (255, 255, 255) BLACK = (0, 0, 0) pygame.init() wS = pygame.display.set_mode((500, 500), 0, 32) # Method works as intended by itself def create_text(x, y, phrase, color): """ Create and displays text onto the globally-defined `wS` Surface (params in docstring omitted) """ # Assume that the font file exists and is successfully found font_obj = pygame.font.Font(None,30) text_surface_obj = font_obj.render(phrase, True, color) text_rect_obj = text_surface_obj.get_rect() text_rect_obj.center = (x, y) wS.blit(text_surface_obj, text_rect_obj) FPS = pygame.time.Clock() while True: wS.fill(BLACK) for event in pygame.event.get(): if event.type == KEYDOWN and event.key == K_SPACE: totalTime = 0 FPS.tick() displayText = True if event.type == QUIT: pygame.quit() sys.exit(0) if displayText: totalTime += FPS.tick() create_text(250, 250, "Hello world!", WHITE) if totalTime >= 2000: displayText = False pygame.display.update() Answers 2
you should try this:
import pygame import sys from pygame.locals import * WHITE = (255, 255, 255) BLACK = (0, 0, 0) pygame.init() wS = pygame.display.set_mode((500, 500), 0, 32) clock = pygame.time.Clock() showing = False timer = 0 # Method works as intended by itself def create_text(x, y, phrase, color): """ Create and displays text onto the globally-defined `wS` Surface (params in docstring omitted) """ # Assume that the font file exists and is successfully found font_obj = pygame.font.Font("./roboto_mono.ttf", 32) text_surface_obj = font_obj.render(phrase, True, color) text_rect_obj = text_surface_obj.get_rect() text_rect_obj.center = (x, y) wS.blit(text_surface_obj, text_rect_obj) while True: wS.fill(BLACK) for event in pygame.event.get(): if event.type == KEYDOWN and event.key == K_SPACE: showing = True timer = 0 if event.type == QUIT: pygame.quit() sys.exit(0) if showing: timer += 1 create_text(250, 250, "Hello world!", WHITE) if timer == 20: timer = 0 showing = False pygame.display.update() clock.tick(100) what this does is every time you press space it shows the text for 2s by showing it, counting 2000ms and then not showing it.
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