And Operator's Inconsistency

Question

The following code runs code if these conditions are met:

User clicks on a surface called box
the box must be moving in at least one direction

if ((boxLeft < pygame.mouse.get_pos()[0] < boxLeft + BOX_SIZE) and (boxTop < pygame.mouse.get_pos()[1] < boxTop + BOX_SIZE)) and ((dx != 0) and (dy != 0)):

This does not happen. Instead, the code only runs if the box is moving in both directions (if both do not dx and dy == 0)

score 1 · Accepted Answer · answered Oct 20 '20 at 19:28

1

I think you meant to do ((dx != 0) or (dy != 0)) so it can detect when it's just moving in one direction.

answered Oct 20 '20 at 19:28

Seth

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It worked. But why? shouldn't using the `and` operator check if **both** `dx` and `dy` are **not** == 0? – Daeshaun K Morrison Oct 20 '20 at 19:31
@DaeshaunKMorrison if it's only moving in one direction, then the other direction has no movement, or 0 movement. – Seth Oct 20 '20 at 19:32

And Operator's Inconsistency

1 Answers1