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| − | actionscript, that infuriatingly intractable marshmellow fluff...
| + | == Basics Operators, Conditionals, Codehinting == |
| − | so far i have only understood the most basic of concepts, but now i will try to learn it well.
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| | | | |
| − | *[[Actionscript Sandbox]]
| + | === Conditionals === |
| − | *[http://moock.org/lectures/groundUpAS3/ Moock's Actionscript 3.0 from the Ground Up]
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| | | | |
| − | *http://www.kirupa.com/developer/actionscript/spring.htm
| + | <code>var message = "yellow"; // the equal sign assigns values to variables |
| − | *http://www.bit-101.com/tutorials/elasticity.html
| + | trace ("big " + message + " truck"); // prints "big yellow truck" |
| | + | if (message == "yellow") { // the double equal sign checks to see if variables are equal |
| | + | trace ("yes, i did say big yellow truck."); // prints "yes, i did say big yellow truck" |
| | + | trace (typeof message); // prints "string" |
| | + | var x = a; // prints "number" |
| | + | trace (typeof a) |
| | + | }</code> |
| | | | |
| | | | |
| − | == alpha == | + | == Runtime Environment == |
| − | <pre>
| + | === Detecting player/OS and setting movie dimensions === |
| − | // set movie clip's alpha (transparency) to 50% immediately
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| − | myMC._alpha = 50%
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| − | | |
| − | // set up alphacounter, if alphacounter is undefined then it sets it to 99. otherwise alphacounter is to decrease to 0 and delete itself.
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| − | myMC.onEnterFrame = function (){
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| − | this.alphaCount = (this.alphaCount == undefined) ? 99 : --this.alphaCount;
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| − | this._alpha = this.alphaCount;
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| − | if (this._alpha <= 0) {
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| − | delete this.onEnterFrame;
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| − | }
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| − | }
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| − | | |
| − | // change it to ++ to make it go up
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| − | </pre>
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| − | | |
| − | == Codehinting ==
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| − | | |
| − | to keep with good practice you should keep to these common suffixes so that any programmer can read your code easily without finding it utterly incomprehensible.
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| − | | |
| − | variables:
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| − | *must start with letters, underscore or dollarsign.
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| − | *no hyphens or other punctuation besides the underscore.
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| − | *cannot start with a number.
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| − | *are case-insensitive, but keep it constant or you might get confused
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| − | | |
| − | *xxx_str // means the variable contains a string
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| − | *xxx_arr // means the variable contains an array
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| − | | |
| − | *[http://livedocs.adobe.com/flash/8/main/wwhelp/wwhimpl/common/html/wwhelp.htm?context=LiveDocs_Parts&file=00001151.html More about using suffixes to trigger code hints]
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| − | | |
| − | == Conditionals == | |
| − | | |
| − | <pre>var message = "yellow";
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| − | trace ("big " + message + " truck"); // prints "big yellow truck"
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| − | if (message == "yellow") {
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| − | trace ("yes, i did say big yellow truck."); // prints "yes, i did say big yellow truck"
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| − | }</pre>
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| − | | |
| − | <pre>= assigning value
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| − | == comparing values</pre>
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| − | | |
| − | == loops ==
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| − | | |
| − | <table><tr><td valign=top>this sequence... <pre>trace (101);
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| − | trace (102);
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| − | trace (103);
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| − | trace (104);
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| − | trace (105);</pre></td>
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| − | <td valign=top>is equal to:
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| − | <pre>var x = 101;
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| − | trace (x);
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| − | x = x + 1;
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| − | trace (x);
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| − | x = x + 1;
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| − | trace (x);
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| − | x = x + 1;
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| − | trace (x);
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| − | x = x + 1;
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| − | trace (x);</pre></td>
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| − | <td valign=top>is also equal to:
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| − | <pre>var x = 101;
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| − | while (x <= 105) { // as long as x is less than 105...
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| − | trace (x);
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| − | x = x + 1; // ...continue to trace x but add one each time
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| − | }</pre></td>
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| − | <td valign=top>they all print:
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| − | <pre>101
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| − | 102
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| − | 103
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| − | 104
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| − | 105</pre></td></tr></table>
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| − | | |
| − | == functions ==
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| − | | |
| − | sample:
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| − | | |
| − | <pre>function area(height, width){
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| − | return height * width;
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| − | }
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| − | area1 = area(10,15);
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| − | area2 = area(10,20);
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| − | area3 = area(10,20);
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| − | </pre>
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| − | | |
| − | == event based execution ==
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| − | | |
| − | <pre>someObject.onSomeEvent = someFunction;</pre>
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| − | | |
| − | for example:
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| − | <pre>skaGirl.onRelease = dirtyskanking; // the object named skaGirl will dirtyskank when mouse is released
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| − | | |
| − | function dirtyskanking () {
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| − | this._parent._rotation = 360; // defines the rotation of the dirtyskanking.
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| − | }
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| − | </pre>
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| − | | |
| − | == sample ==
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| − | | |
| − | === quiz ===
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| − | | |
| − | <pre>
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| − | button1.onRelease = function () { // on pressing button 1
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| − | this._parent.q1answer = 1; // assigning 1 to q1 answer
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| − | this._parent.gotoAndStop("q2") // after which we go to frame labelled as q2
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| − | }
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| − | | |
| − | if (q1answer == 3) { // if answer was right
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| − | totalCorrect = totalCorrect++; // increase number of total correct qns by one
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| − | }
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| − | </pre>
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| − | | |
| − | == confused about root, this, and parent? so am i! ==
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| − | | |
| − | this piece of code would work ON a frame on the main stage, one_mc being an object onnit.
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| − | | |
| − | <pre>function T1over() {
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| − | _root.one_mc.gotoAndStop(2);
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| − | getURL('javascript:modifyT1();');
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| − | }
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| − | | |
| − | _root.one_mc.onRollOver = T1over;</pre>
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| − | | |
| − | == actionscript and javascript ==
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| − | | |
| − | *[http://kb.adobe.com/selfservice/viewContent.do?externalId=tn_15683 flash to/from javascript call]
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| − | *[http://board.flashkit.com/board/archive/index.php/t-578023.html halp i am so confused]
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| − | | |
| − | == tips == | |
| − | | |
| − | * use frame labels rather than frame numbers. you could call a starting frame "init".
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| − | * dont use too many functions
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| − | | |
| − | == See Also ==
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| − | *[http://livedocs.adobe.com/flashlite/2/main/wwhelp/wwhimpl/common/html/wwhelp.htm?context=LiveDocs_Parts&file=00000642.html preloader]
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| − | *[http://www.sephiroth.it/python/sepy.php SEPY actionscript editor]
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| − | *[http://www.mtasc.org/ Motion-Twin ActionScript 2 Open Source free compiler.]
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| − | *[http://code.google.com/p/swfobject/ SWFobject]
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| − | *[http://hosted.zeh.com.br/mctween/index.html MC Tween - Best way to tween]
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| − | *[http://code.google.com/p/tweener/ Tweener - New way to tween]
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| − | | |
| − | *[http://labs.adobe.com/wiki/index.php/ActionScript_3:resources:apis:libraries actionscript apis (youtube, odeo)]
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