Flash to make spinning flowers

Ideas:

1. Use the for...in statement to traverse all objects in the entire main scene (_root);

2. Find them (e.g. _root[k]) and specify different functions for their different methods;

Step 1: Add several movie clips to the home scene without having to name them. Step 2: Add as code:

var f1:function = Function () {

This.startdrag (FALSE);

};

var f2:function = Function () {

This.stopdrag ();

};

var f3:function = Function () {

This._rotation = This.speed;

};

Define three functions:

F1 completes the object to start the drag and drop function;

F2 Finish Object Stop drag and drop function;

The F3 completes the object rotation function, the speed is each object individual speed*/

For (var k in _root) {

_root[k].speed = random (20);

_root[k].onpress = F1;

_root[k].onrelease = F2;

_root[k].onenterframe = F3;

}

Traverse the main scene, set the Speed property and Onpress,onrelease.onenterframe method for each MC.

Flash charge 1: Two ways to define a function

(1) Function statement definition method:

function Testadd (A, b) {

return a B;

}

(2) Function expression Definition method:

var testadd:function = Function (A, b) {

return a B;

};

In peacetime, you should use the Function statement definition [Method 1] As far as possible, this method of definition is more standard and simpler. Difference: Method 2, you need to define, then call, Method 1, you can call first, write the definition.

Flash charge 2:for...in is used to enumerate all the elements in a set, and it is very powerful to iterate over (retrieve) such as XML, array, object, or even _root or MC, etc. In this lesson, we use it to traverse the entire _root.

Example 1:

var car = {brand: "M6", Color: "Red", engine:2000};

For (var k in car) {

Trace (k "=" car[k]);

}

Output results:

Brand=m6

Color=red

engine=2000

Example 2:

First, put four movie clips in the home scene.

For (var k in _root) {

Trace (_root[k]);

}

Output results:

_level0.instance4

_level0.instance3

_level0.instance2

_level0.instance1

We note that even if the MC is not named in the _root, the Flash compiler is automatically named for the MC, and the previous _level10 refers to the depth of the component as 10.

Flash charge 3:. onenterframe

(1) Onenterframe is the soul of as animation and game making.

(2) When we at home scene first frame write onenterframe=function () {...} , in fact the Flash compiler automatically adds _root to the front and turns _root.onenterframe.

(3) Important: Movieclip.onenterframe=function () {...} Form. This form allows the MC to run Onenterframe independently. Cases:

First, there are three movie clips on the main scene, and the instance names are MC1,MC2,MC3. //

Mc1.speed = random (10);

Mc2.speed = random (10);

Mc3.speed = random (10);

Mc1.onenterframe = function () {

Mc1._rotation = Mc1.speed;

};

Mc2.onenterframe = function () {

Mc2._rotation = Mc2.speed;

};

Mc3.onenterframe = function () {

Mc3._rotation = Mc3.speed;

};

Imagine if the scene has 100 such a MC then write the code of the process is not too painful ah ... Oh... Let's take a look at the following wording:

function F1 () {

This._rotation = This.speed;

}

For (var k in _root) {

_root[k].speed = random (10);

_root[k].onenterframe = F1;

}

The complete function is equivalent to:

Mc1.speed = random (10);

Mc1.onenterframe = function () {

This._rotation = This.speed;

};

This refers to the object in the function that calls the function (MC1)