On Jan 17, 2006, at 7:55 PM, Michael Nadel wrote:
Thanks everyone for your great answers!
let me add one thing regarding floats vs. integers;
if you're using a parentscript- or behaviourinstance to animate your
sprite,
it's usually a good idea to modify script-properties rather than
sprite-properties.
a sprites' dimensions are always integers.
if you modify those with floats, the calulation will be rounded-off
to integer again on each frame
this can lead to unexpected results since there's no such thing as a
half pixel..
the way the example works, you can animate with for instance 0.01
pixels per frame.
even better would be to animate the sprite with pixels per second
instead pixels per frame...
but that's another story
so for example:
-- parent script/behaviour
property spriteWidth, spriteHeight
property scaleFactor
on beginSprite me
spriteWidth = mySprite.width
spriteHeight = mySprite.height
scaleFactor = 1.1000
end
on exitFrame me
spriteWidth = spriteWidth * scaleFactor
spriteHeight = spriteHeight * scaleFactor
if spriteWidth < mySprite.member.width and spriteHeight <
mySprite.member.height then
mySprite.width = spriteWidth
mySprite.height = spriteHeight
end if
end
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