5 replies to this topic

[K1NNY]

I'm trying to make it where i display my main starting screen with a while loop and it doesn't seem to be working. If i blit the pictures normally outside of the loop it works, but just simply having the loop stops the program from even going. This is my while loop:

[source lang="python"]#Menu screenstart_screen = Truewhile start_screen: DISPLAY.blit(sbg, (0, 0)) DISPLAY.blit(stitle, (188, 10)) DISPLAY.blit(textObj1, RectObj1) for event in pygame.event.get(): if event.type == pygame.KEYDOWN: if event.key == pygame.K_RETURN: start_screen == False game == True[/source]
"game" being another loop that simply fills the screen white(for testing, later this will initiate the game).

Here's the whole code:

[source lang="python"]import pygame, randomimport randintimport pplrtyimport sysfrom pygame.locals import *pygame.init()FPS = 30fpsClock = pygame.time.Clock()#variablesx = randint.xyear = 2011p = pplrty.p#get colorsWHITE = (255, 255, 255)RED = (255, 0, 0)#get display stuffDISPLAY = pygame.display.set_mode((640,480))pygame.display.set_caption('Program')#create fontsfontObj1 = pygame.font.Font('freesansbold.ttf', 16)#make wordstextObj1 = fontObj1.render('Hit Enter', True, RED)RectObj1 = textObj1.get_rect()RectObj1.center = (315, 240)#get imagestitle = pygame.image.load('title.png')stitle = pygame.transform.scale(title, (264, 64))bg = pygame.image.load('bg.png')sbg = pygame.transform.scale(bg, (640, 480))#Menu screenstart_screen = Truewhile start_screen: DISPLAY.blit(sbg, (0, 0)) DISPLAY.blit(stitle, (188, 10)) DISPLAY.blit(textObj1, RectObj1) for event in pygame.event.get(): if event.type == pygame.KEYDOWN: if event.key == pygame.K_RETURN: start_screen == False game == Truewhile game: DISPLAY.fill(WHITE)#Main Loopwhile True: for event in pygame.event.get(): if event.type == QUIT: pygame.quit() sys.exit() pygame.display.update()[/source]

The game is going to be a simple game with a simple gui and is in its first stages so certain things are not there, but it was working until i put the blit images in the loop.

[SiCrane]

Did you mean to use == instead of = for start_screen == False?

[K1NNY]

Did you mean to use == instead of = for start_screen == False?

Yes that was a mistake, i'll fix it when i get back to working on it.

[K1NNY]

That actually didn't work either. Am i using the while loop wrong? when i replaced the "=" with "==" it errored and said "start_screen is not defined"

EDIT:

I fixed it, i was forgetting to call pygame.display.update

Edited by K1NNY, 02 October 2012 - 09:22 AM.

[FLeBlanc]

You mistake his meaning. Your initialization of start_screen needs to remain start_screen=True, but in your conditionals if event.key==pygame.K_RETURN you need to change start_screen==False and game==True to start_screen=False and game=True. Because as it stands, you are not assigning to those values you are just comparing them to True or False.

[BCullis]

That actually didn't work either. Am i using the while loop wrong? when i replaced the "=" with "==" it errored and said "start_screen is not defined"

<sub>That's partially because you corrected in the wrong direction. Line 42 in your post above (the "entire code" section) is fine. It declares and defines the start_screen variable. The problem is lines 53 and 54. Those should be assignments and not boolean checks, so replace their =='s with a single =.

Edit: slightly too slow. Ah well.</sub>

Edited by BCullis, 02 October 2012 - 09:14 AM.