HI All,
Was hoping someone could help me with a problem I am having programming a game
using pygame.
I am trying to return a variable with a integer value defined by user input
from a function.
Basically the idea is to allow the player to select the level of difficulty by
selecting from a choice of keys, each key corresponding too the number of
frames per second. The function code is as follows:
def difficultyLevel():
FPS = ''
windowSurface = pygame.display.set_mode((WINDOWWIDTH,
WINDOWHEIGHT),pygame.FULLSCREEN)
windowSurface.fill(BACKGROUNDCOLOUR)
drawText('LEVEL OF PLAY', font3, windowSurface, (WINDOWWIDTH/6),
(WINDOWHEIGHT/6))
drawText('B: Your an absoulute Begineer', font3, windowSurface,
(WINDOWWIDTH/6)-100, (WINDOWHEIGHT/6)+100)
drawText('M: Not Too Snazy', font3, windowSurface, (WINDOWWIDTH/6)-100,
(WINDOWHEIGHT/6)+150)
drawText('H: Deathwish' ,font3,windowSurface, (WINDOWWIDTH/6)-100,
(WINDOWHEIGHT/6)+200)
pygame.display.update()
for event in pygame.event.get():
if event.type == QUIT:
terminate()
if event.type == KEYDOWN:
if event.key == ord('b'):
FPS = 30
elif event.key == ord('m'):
FPS = 70
elif event.key == ord('h'):
FPS = 120
return FPS
The function is then called and FPS converted too a integer value in the main
game loop as follows:
topScore = 0
while True:
#set up the game and all intial key and mouse movement values as false
baddies = [] #baddies as a empy list
score = 0
etc
FPS = int(difficultyLevel())
FPS is then used within the game loop to allow for number of frames per second
in:
mainClock.tick(FPS)
However I keep getting the following error:
ValueError: invalid literal for int() with base 10: ''
Please note I am a absolute beoingeer in programming and have had no formal
education to date so please excuse anything I may of left out !!
Thanks
Ciaran
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