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Manual Reference Pages  -  SWF::BUILDER::ACTIONSCRIPT (3)

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NAME

SWF::Builder::ActionScript - SWF ActionScript object.

CONTENTS

SYNOPSIS



  $mc->frame_action(1)->compile( <<AS_END );
    function move_mc(dx) {
        this._x += dx;
    }
  AS_END

  my $mc_i = $mc->place;
  $mc_i->on(KeyPress, <Left>)->compile(move_mc(-5));
  $mc_i->on(KeyPress, <Right>)->compile(move_mc(5));
  $mc_i->on(EnterFrame)->r_rotate(15);



DESCRIPTION

SWF::Builder::ActionScript supports some simple actions and compiling ActionScript compatible with FlashMX.

    Constructors

Methods for movie clip to create a frame action and a clip action. These return an SWF::Builder::ActionSctipt object.
$as = $mc->frame_action( $frame ) creates a frame action.
$as = $mc_i->on/onClipEvent( $event [, $key] ) creates a clip action. See SWF::Builder::MovieClip for details of the events.

    Simple actions

These method add some simple actions to $as and return $as itself.
$as->gotoAndPlay( $frame ) tells the flash player to go to $frame.
$as->gotoAndStop( $frame ) tells the flash player to go to $frame and stop playing.
$as->play tells the flash player to play the movie clip.
$as->stop tells the flash player to stop playing the movie clip.
$as->setProperty( $property, $value ) sets a movie clip property.
$as->moveto( $x, $y ) moves the movie clip to ($x, $y).
$as->r_moveto( $dx, $dy ) moves the movie clip to (current X + $dx, current Y + $dy).
$as->rotate( $r ) rotates the movie clip toward $r degree absolutely.
$as->r_rotate( $dr ) rotates the movie clip to +$dr degree right.
$as->scale( $xscale [, $yscale] ) magnifies/reduces the movie clip.
$as->show shows the movie clip.
$as->hide hides the movie clip.
$as->tellTarget( $target, \&actionsub ) changes the target movie clip for actions in &actionsub. $target is a target path string in slash syntax. &actionsub is called with an ActionScript object whose target is changed. For example,



  $mc_i->on(Press)->tellTarget( mc_i2, sub {
      shift->r_rotate(15);
  });



rotates ’mc_i2’ to 15-degree right when $mc_i is clicked.

    Compiler

SWF::Builder::ActionScript has a FlashMX-compatible compiler for complex actions.
$as->compile( $script_text [, %options] ) compiles $script_text. Options are as follows:
Optimize => $opt_string controls optimization. Optimize option strings are as follows:



 O_PEEPHOLE  peephole optimization.
 O_CONSTEXP  calculate constant expressions.
 O_CONSTMATH calculate math funcions with constant args and constant properties.
 O_LEFTONCE  evaluate a lefthand side of an assignment expression only once. See ATTENTION.
 O_REGISTER  assign local variables to registers.
 O_LOCALREG  assign local variables to local registers using ActionDefineFunction2 (aka Optimize for Flash Player 6r65).
 O_6R65      same as O_LOCALREG.
 O_ALL       enable all optimize options.



If you want to reset an optimize option, put a minus sign on the head of the option. All optimize options are joined with space or ’|’. Default is ’O_ALL|-O_REGISTER|-O_LOCALREG’ (enable all optimize options except O_REGISTER and O_LOCALREG).

ATTENTION: FlashMX ActionScript compiler seems to evaluate a lefthand side of a compound assignment operator twice, while ECMA-262 provides to evaluate it once. For example, FlashMX compiles ’a[i++] += 2’ as same as ’a[i++] = a[i++] + 2’, which counts up i twice. O_LEFTONCE controls this. If you want the same as FlashMX, give ’-O_LEFTONCE’.

Trace => $mode tells the compiler how to compile ’trace’ action.
’none’ ignore all trace action.
’eval’ evaluate the parameters of a trace action, but don’t output anything. This is default.
’lcwin’ output the value to another movie via a LocalConnection. You can use ’tracewindow.swf’ at scripts directory as output window.
’trace’ use ActionTrace tag.
Warning => $level sets the warning level.



 0: deplicated actions.
 1: useless operator in void context.
 2: future reserved and other unsupported features.



$as->load( $script_filename [, %options] ) loads a script and compiles it. See compile method for %options.
Compiler bugs/features

Pragmas are not supported.

The compiler evaluates a lefthand side of an assignment expression once by default. See Optimize option.

Slow...

COPYRIGHT

Copyright 2003 Yasuhiro Sasama (ySas), <ysas@nmt.ne.jp>

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

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perl v5.20.3 SWF::BUILDER::ACTIONSCRIPT (3) 2016-03-17

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