I have multi movieclips in my stage and they have instanceName e.g. k1,k2,... . I want to createar=[k1,k2,k3,k4, ...].
var i: int;
var ar: Array = new Array();
for (i = 1; i < 5; i++)
{
ar[i-1] = ["k" + i];
}
trace(ar);
ar[1].x = 100;
But the end of code does not perform.
What you want to do is to create an array of MovieClips, but instead of it you create an array of Arrays of Strings. To achieve your goal, you need to find an instance of a clip on stage by its name. Here is how you can try to do that:
const array:Array = new Array();
for(var i:int = 0; i < 5; i++) {
const childName:String = "k" + (i + 1);
const myMovieClip:MovieClip = stage.getChildByName(childName) as MovieClip;
array.push(myMovieClip);
}
Related
How to Save positions for 3 objects in Array to make random position between each other by AS3?
import flash.geom.Point;
var arry:Point = new Point();
arry[0] = arry[78,200];
arry[1] = arry[217,200];
arry[2] = arry[356,200];
//object called b1
b1.x = arry[0][0];
b1.y = arry[0][1];
//object called b2
b2.x = arry[1][0];
b2.y = arry[1][1];
//object called b3
b3.x = arry[2][0];
b3.y = arry[2][1];
//make objects swap positions between each other
var rand:Number = (Math.random()*arry.length);
//output to see random position [[78,200],[217,200],[356,200]]
trace(arry);
to get random with tween like this... https://www.youtube.com/watch?v=8m_m64plQ6E
At compile time you should get this Error I suppose : "ReferenceError: Error #1069"
Here is a way to store the positions (like in the link you provided from youtube) :
import flash.geom.Point;
var squareWidth:uint = 40;
var squareHeight:uint = 40;
var marginX:uint = 100;
var marginY:uint = 75;
var spacer:uint = 10;
var positions:Vector.<Point > = new Vector.<Point > (9);
function setPositions(v:Vector.<Point>):void {
var count:uint = 0;
var posx:uint;
var posy:uint;
for (var i = 0; i < 3; i ++)
{
for (var j = 0; j < 3; j ++)
{
posx = (j * squareWidth) + (spacer * j) + marginX;
posy = (i * squareHeight) + (spacer * i) + marginY;
v[count] = new Point(posx,posy);
count++;
}
}
}
setPositions(positions);
trace(positions);
// output :
// (x=100, y=75),(x=150, y=75),(x=200, y=75),(x=100, y=125),(x=150, y=125),(x=200, y=125),(x=100, y=175),(x=150, y=175),(x=200, y=175)
So here you have nine Points to place the clips like in the video.
You just have to add a function to swap the nine boxes stored in another Vector.
In your case.
For 3 positions do the following if I understand your question.
import flash.geom.Point;
var positions:Vector.<Point> = new Vector.<Point>(3);
var p1:Point = new Point(78,200);
var p2:Point = new Point(217,200);
var p3:Point = new Point(356,200);
positions[0] = p1;
positions[1] = p2;
positions[2] = p3;
trace(positions);
// output : (x=78, y=200),(x=217, y=200),(x=356, y=200)
So, you're still unclear!
Your issue is to find a random position?
This may help you if this is the problem you're facing :
import flash.geom.Point;
var positions:Vector.<Point > = new Vector.<Point > (3);
var numbers:Vector.<uint> = new Vector.<uint>();
var numbersAllowed:uint = 3;
var rndNmbrs:Vector.<uint> = new Vector.<uint>(3);;
var p1:Point = new Point(78,200);
var p2:Point = new Point(217,200);
var p3:Point = new Point(356,200);
positions[0] = p1;
positions[1] = p2;
positions[2] = p3;
trace(positions);
function populateRndNmbrs(n:uint):void {
for (var i:uint = 0; i < n; i++)
{
numbers[i] = i;
}
}
populateRndNmbrs(numbersAllowed);
function populateRandomNumbers(n:uint):void
{
var rnd:uint;
for (var i:uint = 0; i < n; i++)
{
rnd = numbers[Math.floor(Math.random() * numbers.length)];
for (var j:uint = 0; j < numbers.length; j++)
{
if (rnd == numbers[j])
{
numbers.splice(j,1);
}
}
rndNmbrs[i] = rnd;
}
}
populateRandomNumbers(numbersAllowed);
trace("rndNmbrs = " + rndNmbrs);
for (var i:uint = 0; i < numbersAllowed; i++)
{
trace("b"+ (i+1) + ".x = " + positions[rndNmbrs[i]].x);
trace("b"+ (i+1) + ".y = " + positions[rndNmbrs[i]].y);
// In place of trace, you should place the boxes at those random positions.;
}
//output:
//(x=78, y=200),(x=217, y=200),(x=356, y=200)
//rndNmbrs = 2,0,1
//b1.x = 356
//b1.y = 200
//b2.x = 78
//b2.y = 200
//b3.x = 217
//b3.y = 200
Is that what you want? Or do you want to know how to create a motion effect?
I'm not sure about what you really need...
This will help you to place all the boxes in a random position.
You may do this like here bellow, and add a function to check if the random positions are not the same.
With only 3 MovieClips, you will often have the same random positions as long they're stored in the "positions Vector"
var squares:Vector.<MovieClip> = new Vector.<MovieClip>(3);
function populateMCs(target:DisplayObjectContainer,n:uint):void{
for (var i:uint = 0; i < n; i++){
squares[i] = target["b"+(i+1)];
}
}
function swapMCs():void{
for (var i:uint=0; i<squares.length; i++){
squares[i].x = positions[rndNmbrs[i]].x;
squares[i].y = positions[rndNmbrs[i]].y;
}
}
populateMCs(this,numbersAllowed);
swapMCs();
I give you a last example to get a motion effect in AS3.
I'm not a translator AS2 -> AS3 and a video is not the best way to show your code :(
This will make your boxes move smoothly, but not the way you want.
Now, you have to learn AS3 and try to make the job by yourself.
Then, if you have another issue, just ask clearly what you want.
var friction:Number = 0.15;
setDestination(squares[0],squares[0].x,350,friction);
setDestination(squares[1],squares[1].x,350,friction);
setDestination(squares[2],squares[2].x,350,friction);
squares[0].addEventListener(Event.ENTER_FRAME,moveClip);
squares[1].addEventListener(Event.ENTER_FRAME,moveClip);
squares[2].addEventListener(Event.ENTER_FRAME,moveClip);
function setDestination(mc:MovieClip,x:uint,y:uint,friction:Number):void{
mc.destinx = x;
mc.destiny = y;
mc.f = friction;
}
function moveClip(e:Event):void{
var mc:MovieClip = e.target as MovieClip;
trace(mc.name)
mc.speedx = (mc.destinx - mc.x);
mc.speedy = (mc.destiny - mc.y);
mc.x += mc.speedx*mc.f;
mc.y += mc.speedy*mc.f;
if((Math.floor(mc.speedx)<1) && (Math.floor(mc.speedy)<1)){
mc.removeEventListener(Event.ENTER_FRAME,moveClip);
trace("STOP MOVE FOR " + mc.name);
}
}
Is there? Like Let's say I need 5 variables in ActionScript 3.0 and would like to name them as follows:
var myVar_1 = "things";
var myVar_2 = "things";
var myVar_3 = "things";
var myVar_4 = "things";
var myVar_5 = "things";
But instead of having to type them 1 by 1, would it work in a loop? I can't seem to make it work and would really love some help/advice on this matter.
Yes, you can create a dynamic property name using [ ] array access:
var variables:Object = {};
for(var i:int = 0; i < 5; i++){
variables["myVar" + i] = "value " + i;
}
trace(variables.myVar3); // "value 3"
The variables object in this case could be replaced by any dynamic object, including MovieClips.
However, in most cases to store data by index it usually makes more sense to use an array. Example:
var variables:Array = [];
for(var i:int = 0; i < 5; i++){
variables.push("value " + i);
}
trace(variables[3]); // "value 3"
You should use Vector.<String>, Array, Object or Dictionary for that:
var variables:Vector.<String> = new <String>[];
for(var i:int = 0; i<5; i++)
{
variables[i] = "things";
}
I have 100 movieclips in my stage named mc1,mc2,...,mc100 .
I want to set their visibility to "false" by a for loop like this:
for ( var i:Int=1;i<=100;i++)
{
mc+i.visible=false;
}
How can I do that?
You could try:
for (var i:int = 1; i < 101; i++)
{
this["mc"+i].visible=false;
}
This will work on both timeline and document class.
However, this is not very efficient. If you're going to be using this loop more than once, it's better to store references in an array and iterate over that, rather than use these lookups each time:
Use this at the very start of the application:
var objects:Array = [];
for (var i:int = 1; i < 101; i++)
{
objectsArray[i] = this["mc"+i];
}
Then, when you need to cycle later, use this loop:
for (i = 1; i < 101; i++)
{
var mc:MovieClip = objectsArray[i];
//Now, do what you need to this eg mc.visible = false;
}
I need to acess a variable inside this function using concatenation, following this example:
public function movePlates():void
{
var plate1:Plate;
var plate2:Plate;
var cont:uint = 0;
for (var i:uint = 0; i < LAYER_PLATES.numChildren; i++)
{
var tempPlate:Plate = LAYER_PLATES.getChildAt(i) as Plate;
if (tempPlate.selected)
{
cont ++;
this["plate" + cont] = LAYER_PLATES.getChildAt(i) as Plate;
}
}
}
EDIT:
public function testFunction():void
{
var test1:Sprite = new Sprite();
var test2:Sprite = new Sprite();
var tempNumber:Number;
this.addChild(test1);
test1.x = 100;
this.addChild(test2);
test2.x = 200;
for (var i:uint = 1; i <= 2; i++)
{
tempNumber += this["test" + i].x;
}
trace("tempNumber: " + tempNumber);
}
If i run the code like this, the line this["test" + i] returns a variable of the class. I need the local variable, the variable of the function.
Your loop on first step access plate0 this will cause not found error, if plate0 is not explicitly defined as class member variable or if class is not defined as dynamic. Same thing will happen for plate3, plate4, plate5... in case LAYER_PLATES.numChildren is more than 3.
EDIT:
Thanks to #Smolniy he corrected my answer plate0 is never accessed because cont is incremented before first access. So as he mentioned problem should be on plate3
You don't get the local variable with [] notation. your case has many solutions. You can use dictionary, or getChildAt() function:
function testFunction():void
{
var dict = new Dictionary(true);
var test1:Sprite = new Sprite();
var test2:Sprite = new Sprite();
var tempNumber:Number = 0;
addChild(test1);
dict[test1] = test1.x = 100;
addChild(test2);
dict[test2] = test2.x = 200;
for (var s:* in dict)
{
tempNumber += s.x;
//or tempNumber += dict[s];
}
trace("tempNumber: " + tempNumber);
};
Possible to group multiple MC and post it in an Array?
exp:
array([mc1,mc2,mc3],[ac1],[bc1,b2])
If its possible how could it be achieve in a for...loop function?
You are almost there.
var mcArray1:Array = [[mc1, mc2, mc2], [ac1], [bc1,b2]];
//or
var mcArray2:Array = new Array([mc1, mc2, mc2], [ac1], [bc1,b2]);
//you can access them with for loops
var array:Array;
var mc:MovieClip;
for(var i:int = 0; i < mcArray.length; i++)
{
array = mcArray1[i];
for(var j:int = 0; j < array.length; j++)
{
mc = MovieClip(array[j]);
mc.x = 20;//do whatever you want with it.
}
}
I could understand your question wrong, but it seems that you just need multidimensional array, i.e. array of arrays:
var array: Array = new Array(
new Array(mc1,mc2,mc3),
new Array(ac1),
new Array(bc1, b2)
);