Scale

The Scale alteration will cause the sprite to incrementally change size. You can scale on the x or y axis or both.
FireFox may fail to launch completion events if sprite size reaches 0.0. Therefore, also set a minimum size of 0.01 or something smaller if necessary.

View example in tutorial


create routine as Start launch horse end

create sprite from horse12.png as horse
  where x=100 and y=100
  having alt=(sub create scale as f where rate=-0.5 and until=0.1 and type=y end)
end

Parameters

completion={routine}: specify a routine to run when the scaling is complete.
rate={number}: a scale rate per second. Use a negative value to shrink and a positive value to grow the sprite.
type={x|y}: specify in which direction to scale the sprite. If type is not specified the scaling is performed both ways.
until={number}: the value at which the scaling should end. Be sure this number makes sense with respect to the initial size of the sprite and the rate being negative or positive.