Is there a way to prevent a flash movieclip (or its children) from being used as a dropTarget? I have objects on the stage which are getting in the way of my determining the underlying stage object where a draggable item is being dropped.
There is no way to prevent a flash movieclip (or its children) from being used as a dropTarget.
You could control it from the other end:
function onMouseUp( e:MouseEvent ):void
{
var obj = evt.target;
var target = obj.dropTarget;
if( target != nonDropAreaMovieClip )
{
obj.stopDrag();
}
}
or if you want the obj to be actually dropped to the backgroundMovieClip, which is behind the nonDropAreaMovieClip, you could calculate the global/local coorinates and just do:
function onMouseUp( e:MouseEvent ):void
{
var obj = evt.target;
var target = obj.dropTarget;
if( target != nonDropAreaMovieClip )
{
obj.stopDrag();
obj.x = //calculated x
obj.y = //calculated y
backgroundMovieClip.addChild( obj );
}
}
I've worked around a similar issue by creating movieclips that are transparent and placing them over the drop regions, or by creating a layer with a transparent object as the topmost layer to prevent the children (in the movieclip) from becoming the dropTarget.
Related
I want to make the game drag and drop to create multiple draggable objects and it can dragged to multiple targets. But I encountered an error when I drag to the first object that I choose to certain target object is not dragged to the target and then I drag it to another target then succeed. I wanted to fix it. And if you can fix it when the object is dragged to the target and then want to be replaced by another object then the dragged object will be replaced and returned to its original position.
This is a overview the program
And this is the source codes that I use
var xPos:int;
var yPos:int;
var poin:int = 0;
var namaobj1:String;
var namaobj2:String;
addListeners(membaca, menulis, berenang, sepakbola, melukis, memasak, menari, bercocoktanam, beladiri, bermainmusik);
proses.addEventListener(MouseEvent.CLICK,proses1);
function getPosition(target:Object):void
{
xPos = target.x;
yPos = target.y;
}
function dragObject(e:MouseEvent):void
{
getPosition(e.target);
e.target.startDrag(true);
}
function stopDragObject(e:MouseEvent):void
{
if (e.target.hitTestObject(getChildByName("target2")))
{
e.target.x = getChildByName("target2").x;
e.target.y = getChildByName("target2").y;
namaobj2 = e.target.name;
}
else if (e.target.hitTestObject(getChildByName("target1")))
{
e.target.x = getChildByName("target1").x;
e.target.y = getChildByName("target1").y;
namaobj1 = e.target.name;
}
else
{
e.target.x = xPos;
e.target.y = yPos;
}
pil1.text = namaobj1;
pil2.text = namaobj2;
e.target.stopDrag();
}
function addListeners(... objects):void
{
for (var i:int = 0; i < objects.length; i++)
{
objects[i].addEventListener(MouseEvent.MOUSE_DOWN, dragObject);
objects[i].addEventListener(MouseEvent.MOUSE_UP, stopDragObject);
}
}
I'm using draggable objects by putting addListener function.
I also include his .fla can be downloaded here ( TEST.FLA ) rather you can more easily apply fixed codes
You can add Mouse_UP event in your targets instead of you dragged objects. Then when the MOUSE_UP event is trigged, you will know which objects is your target(e.target) without hitTestObject. The code is as follows:
You could have to set dragged object's mouseEnabled when mouse down, and true after dragged.
I am trying to trace the position of a movieclip(that contains a simple timeline animation inside) so that I can attach another movieclip to be able to follow it.
How can I do that?
empty = the movieclip that contains timeline animation
mc = the movieclip I want to follow the "empty" movieclip
empty.addEventListener(Event.ENTER_FRAME, onMove);
function onMove(event:Event):void {
var mc:MovieClip = new SmokeTween();
mc.x = empty.x;
mc.y = empty.y;
mc.rotation = Math.round(Math.random() * 70);
this.addChild(mc);
}
Actually I went into "empty" mc and and used this code and seems to work fine:
this.addEventListener ( Event.ENTER_FRAME, traceFrame );
function traceFrame ( e : Event ) : void
{
if (e.target.currentFrame > 0){
MovieClip(parent.parent).mc.x = e.target.x;
}
}
I imagine that empty doesn't animate, so you need to use the root's ENTER_FRAME event instead of empty's:
addEventListener(Event.ENTER_FRAME, onMove); // no "empty."
function onMove(event:Event):void {
var mc:MovieClip = new SmokeTween();
mc.x = empty.x;
mc.y = empty.y;
mc.rotation = Math.round(Math.random() * 70);
this.addChild(mc);
}
As your project gets bigger, you'll also find that recycling objects becomes important (especially in Flash). Keep an array of SmokeTweens and keep recycling them, instead of creating new ones and letting them delete themselves.
Actually I went into "empty" mc and and used this code and seems to work fine:
this.addEventListener ( Event.ENTER_FRAME, traceFrame );
function traceFrame ( e : Event ) : void
{
if (e.target.currentFrame > 0){
mc.x = e.target.x;
}
}
I'm trying to make something like bookmarks, I have 1 note on the stage and when the user clicks it, it starts to drag and the users drops it where they want. the problem is I want these notes to be dragged multiple times.. here is my code:
import flash.events.MouseEvent;
//notess is the instance name of the movie clip on the stage
notess.inputText.visible = false;
//delet is a delete button inside the movie clip,
notess.delet.visible = false;
//the class of the object i want to drag
var note:notes = new notes ;
notess.addEventListener(MouseEvent.CLICK , newNote);
function newNote(e:MouseEvent):void
{
for (var i:Number = 1; i<10; i++)
{
addChild(note);
//inpuText is a text field in notess movie clip
note.inputText.visible = false;
note.x = mouseX;
note.y = mouseY;
note.addEventListener( MouseEvent.MOUSE_DOWN , drag);
note.addEventListener( MouseEvent.MOUSE_UP , drop);
note.delet.addEventListener( MouseEvent.CLICK , delet);
}
}
function drag(e:MouseEvent):void
{
note.startDrag();
}
function drop(e:MouseEvent):void
{
e.currentTarget.stopDrag();
note.inputText.visible = true;
note.delet.visible = true;
}
function delet(e:MouseEvent):void
{
removeChild(note);
}
any help will be appreciated.
You need to create a new instance of your note class when you drop, copy the location and other variables from the note you were dragging, add your new note to the stage, and return the dragging note to its original position.
Something like:
function drop($e:MouseEvent):void
{
$e.currentTarget.stopDrag();
dropNote($e.currentTarget as Note);
}
var newNote:Note;
function dropNote($note:Note):void
{
newNote = new Note();
// Copy vars:
newNote.x = $note.x;
newNote.y = $note.y;
// etc.
// restore original note.
// You will need to store its original position before you begin dragging:
$note.x = $note.originalX;
$note.y = $note.orgiinalY;
// etc.
// Finally, add your new note to the stage:
addChild(newNote);
}
... this is pseudo-code really, since I don't know if you need to add the new note to a list, or link it to its original note. If you Google ActionScript Drag Drop Duplicate, you will find quite a few more examples.
I think you are not target the drag object in drag function and problem in object instantiation
for (var i:Number = 1; i<numberOfNodes; i++) {
note = new note();
addChild(note);
...
....
}
function drag(e:MouseEvent):void{
(e.target).startDrag();
}
If you are dragging around multiple types of objects (eg. Notes and Images), you could do something like this, rather than hard coding the type of object to be instantiated.
function drop(e:MouseEvent):void{
// Get a reference to the class of the dragged object
var className:String = flash.utils.getQualifiedClassName(e.currentTarget);
var TheClass:Class = flash.utils.getDefinitionByName(className) as Class;
var scope:DisplayObjectContainer = this; // The Drop Target
// Convert the position of the dragged clip to local coordinates
var position:Point = scope.globalToLocal( DisplayObject(e.currentTarget).localToGlobal() );
// Create a new instance of the dragged object
var instance:DisplayObject = new TheClass();
instance.x = position.x;
instance.y = position.y;
scope.addChild(instance);
}
Can anyone tell me how to achieve marquee selection effect with AS3 to select multiple movieclips by drawing a dynamic rectangle around them and then drag and drop them anywhere?
Don't use startDrag() if you need multiple objects to be draggable, since it only allows one object to be dragged at a time. Instead, listen for mouse events and do the moving manually:
var oldX:int;
var oldY:int;
var dragging:Boolean = false;
function onMouseDown(evt:MouseEvent):void {
dragging = true;
oldX = evt.stageX;
oldY = evt.stageY;
}
function onMouseMove(evt:MouseEvent):void {
if (!dragging) return;
var dX:int = evt.stageX - oldX;
var dY:int = evt.stageY - oldY;
for (int i = 0; i < selectedClips.length; i++) {
var clip:DisplayObject = selectedClips[i];
clip.x += dX;
clip.y += dY;
}
oldX = evt.stageX;
oldY = evt.stageY;
}
function onMouseUp(evt:MouseEvent):void {
dragging = false;
}
This code assumes that:
Your array of selected objects is called selectedClips.
Your array of selected objects all inherit from DisplayObject.
You have added event listeners on all draggable objects for the MOUSE_DOWN, MOUSE_MOVE, and MOUSE_UP mouse events which call these functions.
If any of those three conditions are not met, update my code or your code to work properly. Also, if you need to do any additional handling when the objects are dropped, you can use the mouse up handler to add custom code.
I need to add a MovieClip to stage, the limitation being that it should only be added to an empty area on the stage. The stage itself either contains complex shapes or is manipulable by the user i.e. he can drag/move objects to change the empty area. The hitTest and hitTestObject methods need DisplayObject already available on the stage. What is the right way to go - the only solution I can imagine is having added my object on the stage and then repeatedly doing hit tests?
[Imagine it to something like adding sprites in a video game - they must spawn in empty regions; if they pop out from inside of each other, then it'll look really odd.]
Well, when you create a new class, just turn it off with a variable and set the visibility to false, then loop until there is no hitTest.
A silly example:
public class someClass extends Sprite
{
private var objectsOnStage:Array;
public function someClass(objectsArray:Array) {
objectsOnStage = objectsArray;
visible = false;
addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e:Event){
removeEventListener(Event.ADDED_TO_STAGE, init);
addEventListener(Event.ENTER_FRAME, SEARCH);
}
private function SEARCH(e:Event) {
var doesHit:Boolean = false;
x = Math.round(Math.random() * (550 - 0)) + 0;
y = Math.round(Math.random() * (400 - 0)) + 0;
for (var i:int = 0; i < objectsOnStage; i++) {
if (doesHit) break;
if (this.hitTestObject(objectsOnStage[i])) {
doesHit = true;
}
}
if (doesHit) return;
placedInit();
}
private function placedInit() {
visible = true;
removeEventListener(Event.ENTER_FRAME, SEARCH);
//now init the stuff you want.
}
}
You just check if bounding boxes of both clips overlaps. Like this:
import flash.geom.Rectangle;
import flash.display.MovieClip;
// create simple movie clips that has a rectangle shape inside
var sym1 : MovieClip = new Sym1();
var sym2 : MovieClip = new Sym2();
// get a rectanle of both clipt
var boundingBox1 : Rectangle = sym1.getBounds(this);
var boundingBox2 : Rectangle = sym2.getBounds(this);
// check if bounding boxes of both movie clips overlaps
// so it works like hitTestObject() method
trace( boundingBox1.intersects( boundingBox2) )
I know this post is super old, but in case it helps anybody --
If you need to do a hit test on a movieclip that isn't on the stage. A workaround is to rasterize it to a bitmap first.
var bitmapData:BitmapData = new BitmapData(mc.width, mc.height, true, 0x0000000);
bitmapData.draw(mc);
if (bitmapData.getPixel32(x, y) > 0) {
// Hit true.
}