setSpriteScale / getSpriteSize - negative values, is this correct?

pobtastic

I'm not convinced this is a bug, as I can see that it could also be useful too? So maybe it's just a request to alter the documentation (and discussion about it?)

Consider the following code;

sprite_sheet = loadImage( "Ansimuz/GothicCemeterySkeleton", false )
sprite = [
  createSprite(),
  createSprite()
]

for i = 0 to len( sprite ) loop
  setSpriteImage( sprite[i], sprite_sheet, 21 )
  lastpos = { gWidth() / ( i + 1.5 ), gHeight() / 2 }
  setSpriteLocation( sprite[i], lastpos )
repeat

setSpriteScale( sprite[0], { 8, 8 } )
setSpriteScale( sprite[1], { -8, 8 } )

loop
  for i = 0 to len( sprite ) loop
    size = getSpriteSize( sprite[i] )
    printAt( 0, i, "Size ", i, ": ", size )
  repeat
  updateSprites()
  drawSprites()
  update()
repeat

The output is that size 0 width is 352 but size 1 width is -352. Now ... that's not completely unexpected I guess - but when you're working out the beginning and end of a lerp() say, and one that goes one sprite image offscreen (to give the illusion of "leaving") when it's negative it then needs fudging depending on which side of the screen I'm drawing on. I mean ... the width of a sprite is the width of a sprite, it shouldn't really matter if I'm drawing it back-to-front or not?

Martin

My understanding is that it is entirely ententional to permit negative values for sprite scale as that's how sprite flipping is done in Fuze, but I'm as surprised as you that sprite width is returning negative because like you say, the width is the width whether it's flipped or not!

I'm going to raise a bug report for this, scale shouldn't have anything to do with width from a negative / positive point of view...