MACROMEDIA DIRECTOR MX-LINGO DICTIONARY, Руководство пользователя

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on stepFrame
Syntax
on stepFrame
statement(s)
end
Description
System message and event handler; works in script instances in
actorList
because these are the
only objects that receive
on stepFrame
messages. This event handler is executed when the playhead
enters a frame or the Stage is updated.
An
on stepFrame
handler is a useful location for Lingo that you want to run frequently for a
specific set of objects. Assign the objects to
actorList
when you want Lingo in the
on stepFrame
handler to run; remove the objects from
actorList
to prevent Lingo from running. While the
objects are in
actorList
, the objects’
on stepFrame
handlers run each time the playhead enters a
frame or the
updateStage
command is issued.
The
stepFrame
message is sent before the
prepareFrame
message.
Assign objects to
actorList
so they respond to
stepFrame
messages. Objects must have an
on
stepFrame
handler to use this built-in functionality with
actorList
.
The
go
,
play
, and
updateStage
commands are disabled in an
on stepFrame
handler.
Example
If the child object is assigned to
actorList
, the
on stepFrame
handler in this parent script
updates the position of the sprite that is stored in the
mySprite
property each time the playhead
enters a frame:
property mySprite
on new me, theSprite
mySprite = theSprite
return me
end
on stepFrame me
sprite(mySprite).loc = point(random(640),random(480))
end
stillDown
Syntax
the stillDown
Description
System property; indicates whether the user is pressing the mouse button (
TRUE
) or not (
FALSE
).
This function is useful within a
mouseDown
script to trigger certain events only after the
mouseUp
function.
Lingo cannot test
stillDown
when it is used inside a repeat loop. Use the
mouseDown
function inside
repeat loops instead.