User Guide

on prepareMovie 189
on prepareFrame
Usage
-- Lingo syntax
on prepareFrame
statement(s)
end
// JavaScript syntax
function prepareFrame {
statement(s);
}
Description
System message and event handler; contains statements that run immediately before the current
frame is drawn.
Unlike
beginSprite and endSprite events, a prepareFrame event is generated each time the
playhead enters a frame.
The
on prepareFrame handler is a useful place to change sprite properties before the sprite
is drawn.
If used in a behavior, the
on prepareFrame handler receives the reference me.
The
go, play, and updateStage commands are disabled in an on prepareFrame handler.
Example
This handler sets the locH property of the sprite that the behavior is attached to:
-- Lingo syntax
on prepareFrame me
sprite(me.spriteNum).locH = _mouse.mouseH
end
// JavaScript syntax
function prepareFrame() {
sprite(spriteNum).locH = _mouse.mouseH;
}
See also
on enterFrame
on prepareMovie
Usage
-- Lingo syntax
on prepareMovie
statement(s)
end
// JavaScript syntax
function prepareMovie() {
statement(s);
}