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Sprite Properties

The following is the list of currently accepted properties or fields for the Get Property and the Set Property actions. Note that the properties can be specified with either an integer (type 7, requires V5.0+) or a single precision floating point (type 1, V4.0 compatible). And since strings are automatically transformed in a value when required, one can use a string to represent the property number (type 0).

FSCommand2

SWF Action
Action Category: 
Miscellaneous
Action Details: 
0
Action Identifier: 
45
Action Structure: 
<n.a.>
Action Length: 
0 byte(s)
Action Stack: 
pop 1 (i), pop i1 (s)
Action Operation: 
i1 := pop();
for(idx := 2; idx < i1 + 2; ++i1) {
  sidx := pop();
}
fscommand2(s2, s3, ..., s(i1 + 1));
Action Flash Version: 
8

Execute the external command (s2) passing on parameters (s3, s4 ... sn.) The external command is likely a JavaScript function.

IMPORTANT NOTES

Ammar Mardawi sent a correction for this action and it looks like it works the way it is described now.

SWF Internal Functions

Since Flash version 5, you can use internal functions (really member functions or methods of internal objects.) These functions are always available. These methods are called using the Call Function action with the name of the object and function separated by a period. A few of these internal functions are duplicates of some direct action script instructions. In general, it is preferred to use these internal functions rather than the direct action. However, direct actions are a good way to optimize your ActionScript code.

Similarly, you can access internal constants (really variable ...

Declare Function (V7)

SWF Action
Action Category: 
Control
Action Details: 
(256 variables)
Action Identifier: 
142
Action Structure: 
string     f_name;
unsigned short   f_arg_count;
unsigned char   f_reg_count;
unsigned short   f_declare_function2_reserved : 7;
unsigned short   f_preload_global : 1;
unsigned short   f_preload_parent : 1;
unsigned short   f_preload_root : 1;
unsigned short   f_suppress_super : 1;
unsigned short   f_preload_super : 1;
unsigned short   f_suppress_arguments : 1;
unsigned short   f_preload_arguments : 1;
unsigned short   f_suppress_this : 1;
unsigned short   f_preload_this : 1;
swf_params   f_params[f_arg_count];
unsigned short   f_function_length;

WARNING: the preload/suppress flags are defined on a short and thus the bytes in a Flash file will look swapped.

Action Length: 
-1 byte(s)
Action Stack: 
n.a.
Action Operation: 
create a function on the current target
Action Flash Version: 
7

Declare a function which can later be called with the Call Function action or Call Method action (when defined as a function member.) The f_function_length1 defines the number of bytes that the function declaration uses after the header (i.e. the size of the actions defined in the function.) All the actions included in this block are part of the function body.

  • 1. A function is limited to 65535 bytes.

Declare Dictionary

SWF Action
Action Category: 
Objects
Action Details: 
0
Action Identifier: 
136
Action Structure: 
unsigned short    f_count;
string   f_dictionary[f_count];
Action Length: 
-1 byte(s)
Action Stack: 
n.a.
Action Operation: 
<n.a.>
Action Flash Version: 
5
See Also: 

Declare an array of strings that will later be retrieved using the Push Data action with a dictionary lookup. There can be a maximum of 65534 strings. The visibility of a dictionary is within its DoAction or other similar block of actions. Note that you should have only one Declare Dictionary. The dictionary is visible from everywhere in the DoAction.

Chr (multi-byte)

SWF Action
Action Category: 
String and Characters
Action Details: 
(multi-byte)
Action Identifier: 
55
Action Structure: 
<n.a.>
Action Length: 
0 byte(s)
Action Stack: 
pop 1 (i), push 1 (s)
Action Operation: 
i1 := pop();
r := mbchr(i1);
push(r);
Action Flash Version: 
4
See Also: 

Pop one integer, use it as a multi-byte string character code and push the newly created string on the stack.

The integer can be any number from 0 to 65535, although many codes are not valid characters.

For more information about valid characters, please, check out the Unicode Consortium.

DoABCDefine

Tag Info
Tag Number: 
72
Tag Type: 
Action
Tag Flash Version: 
9
Brief Description: 

New container tag for ActionScripts under SWF 9. Includes only actions. This tag is not defined in the official Flash documentation.

Tag Structure: 
struct swf_doabc {
	swf_tag			f_tag;		/* 72 or 82 */
	if(f_tag == DoABC) {
		unsigned long	f_action_flags;
		string		f_action_name;
	}
	swf_action3		f_action_record[variable];
};

*the version specified here is the version in which the tags appeared—however, actions of higher versions can be used with older version tags and thus this version doesn't indicate the version of all the actions used in this tag

The DoABC and DoABCDefine are available since version 9. These are similar to the old DoAction and DoInitAction, yet the actions use a way different declaration scheme and they include flags and a name. This new scheme helps greatly in simplifying the definitions of ECMAScript classes and accelerate the access to the code tremendously.

Note that the ...

Metadata

Tag Info
Tag Number: 
77
Tag Type: 
Format
Tag Flash Version: 
8
Brief Description: 

This tag includes XML code describing the movie. The format is RDF compliant to the XMP as defined on W3C.

Tag Structure: 
struct swf_metadata {
	swf_tag			f_tag;		/* 77 */
	string			f_metadata;
};

The Metadata tag is used to describe the SWF movie in a robot readable form. It will be used by search engines to index your Flash movies.

The f_metadata string is an XML buffer defined using the RDF definition compliant with the XMP specification. You can find more information on the W3C and other websites:

RDF Primer
RDF Specification
XMP home page
Dublin Core

Note that this description can describe everything, from the entire movie to each single line of code in your action scripts.

The string must be UTF-8 encoded.

Appendix B — History of the SSWF reference

Dec 2, 2009

Moved the monolithic documentation to a multi-page hierarchical document that includes everything we had before plus many links, many terms attached to all pages (tags, English words.) And revision of most of the text for better English and clarification in some places.

Strengthen the formatting with CCK fields so all declarations look alike.

Broken up the actions from one large table to a set of pages.

Dec 14, 2008

Started work on the Load() feature of the SSWF library. This helped fixing several small mistakes in the documentation.

May 18, 2008

Fixed the ...

Appendix A — The geometry in SWF — Edges

Edges are used to define a shape vector based and also coordinates where images need to be drawn. The edges are always coordinates from where ever your last point was to where ever you want the next point to be (a little like a turtle in LOGO).