Help on Collision Detection Please

john on 2007/04/03 09:41 of |Gunboy

My collision detection won't work, why?

bt1 = pygame.Rect(0, 0, 5, 5)
bt2 = pygame.Rect(0, 0, 5, 5)
bt3 = pygame.Rect(0, 0, 5, 5)
you_box = pygame.Rect(0, 0, 25, 44)
btm1 = Rect.move(bt1, bx, by)
btm2 = Rect.move(bt2, bx2, by2)
btm3 = Rect.move(bt3, bx3, by3)
you_boxm = pygame.Rect.move(you_box, x,y)
collide = Rect.collidelistall(you_box, bt1)

It won't work, why?!

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Comments

eugman on 2007/04/03 10:38:

You probably need to use move_ip . If you don't move in place then you are just saving to btm1 what you would get if you moved. Just a random guess.

gizmo_thunder on 2007/04/03 11:30:

I hope you are trying to find the collision of other objects with you_box. here is how it should be

bt1 = pygame.Rect(0, 0, 5, 5)
bt2 = pygame.Rect(0, 0, 5, 5)
bt3 = pygame.Rect(0, 0, 5, 5)
you_box = pygame.Rect(0, 0, 25, 44)
list = (bt1, bt2, bt3)
you_box.collidelistall(list)

This will work

john on 2007/04/03 15:11:

Thanks, it works now!

john on 2007/04/03 15:15:

One prob though, I want to break the loop whenever they collide, how can I do that?

john on 2007/04/03 15:37:

Ok, just worked it out, but it's crashing my code, the only way I can stop it, is if I know how many digits are in the string, or if it's empty, so how can I find out how many digits are in a string, (if there is any).

Tee on 2007/04/03 19:38:

Do you mean the length of a string? len(s) returns that. It returns 0 if the string has no characters (the length is 0).