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+--- Thread: breakout clone pygame (/thread-36299.html)
breakout clone pygame - flash77 - Feb-06-2022
Hello,
I'm trying to program a breakout clone.
With lives = ball.move(lives) I'm trying to send "lives" to the move method of Ball.
But an error occurs:
Traceback (most recent call last):
File "D:/Daten/Breakout-neu/main.py", line 89, in <module>
main()
File "D:/Daten/Breakout-neu/main.py", line 45, in main
lives = ball.move(lives)
File "D:\Daten\Breakout-neu\ball.py", line 43, in move
lives -= 1
TypeError: unsupported operand type(s) for -=: 'NoneType' and 'int'
What I'm doing wrong?
-----------------------------------------------
Moreover:
Do I have to add a bounce method to Ball?
I tried:
if ball.collpaddle(paddlegroup):
ball.dy *= -1
-----------------------------------------
I'm politely asking for help...
Please be so kind an help me...
(main and Ball is attached as text files)
RE: breakout clone pygame - metulburr - Feb-06-2022
Please post code in code tags instead of uploading an attachment. It makes it a pain to view in a phone
Your traceback shows that lives is not an int as expected.Your move method returns an int only if thr if condition is met, so I suspect one time it is not met, and returning None. Functions return None if nothing else is returned.
Also in pygame you can clamp a rect to the screen
rect nullifying any code to restrict thr object from going out of screen with a one liner.
RE: breakout clone pygame - flash77 - Feb-06-2022
Hello metulburr,
thanks a lot for your answer!
I moved the return statement outside the if-condition - now the error is fixed.