Welcome to the CSC Q&A, on our server named in honor of Ada Lovelace. Write great code! Get help and give help!
It is our choices... that show what we truly are, far more than our abilities.


+9 votes
asked in CSC212_Spring2019 by (1 point)

1 Answer

+3 votes

I'm guessing that your code may be checking if the y coordinate of the bird is exactly equal to a value instead of <= or >=.

For example, when the cardinal is moving up, if the y-coordinate is < Flyable.STEP_SIZE (ie. 5) then another step would put the cardinal out of window at the top and isMovingUp should be set to false. If instead you were checking exactly for a y coordinate of 0 before turning around and the y coordinate of the cardinal is 3, then subtracting 5 would be less than 0 (but not 0), so the y coordinate should throw an exception when you try to use the setPosition method with a y value of -2.

The same can happen at the bottom of the window, checking exactly for Aviary.WINDOW_SIZE or really Aviary.WINDOW_SIZE - Flyable.FLYER_SIZE

answered by (1 point)