Brand new to programming so I apologize in advance.
I'm trying to set up a game where after each time a button is pressed, a new instance of a MC is added to stage, then I need a collision detection for an existing object with any of the new instances of the MC. I need to add one instance to the stage at a time and once it reaches 8 instances, I need it to stop adding children but still be able to detect collisions with any of the instances. As it stands now it just replaces the MC or MCs into the new random position. Heres what my code looks like so far:
var pinkBox:pinkClass = new pinkClass();
var pinkArray:Array = new Array();
myButton.addEventListener(MouseEvent.MOUSE_DOWN, mouseDownleftBtn);{
function mouseDownleftBtn(e: Event): void {
for(var i=0; i<8; i++)
{
addChild(pinkBox);
pinkArray.push(pinkBox);
pinkBox.x = Math.random()*stage.width;
}
myButton.startDrag();
}
}
addEventListener(Event.ENTER_FRAME, checkCollision);
function checkCollision(event:Event){
if (myButton.hitTestObject(pinkBox)) {
trace("hit")
}}
Related
I have a loop that runs and adds a TextField from an array to a Sprite, and draws that Sprite to a BitmapData object. When I reference a previously drawn TextField, nothing is drawn to the BitmapData.
public class Pocket extends Sprite
{
public var inventory:Array = [textField1, textField2, textField3]; //array of TextFields, populated by another class
public var order:Array = [0,1,2,1]; //array of ints indicating the order of which items in "inventory" should be displayed (the error lies when an element is repeated - in this case, 1
public function getItem(index:int):Array
{
var bitmaps:Array = new Array();
for(var i:int = 0; i < order.length; i++)
{
var bitmapData:BitmapData = new BitmapData(32, 32);
var background:Sprite = new Sprite();
background.graphics.beginFill();
background.graphics.drawRect(0,0,32,32);
background.graphics.endFill();
bitmapData.draw(background); //this always executes as expected
var sprite:Sprite = new Sprite();
sprite.addChild(inventory[order[i]]);
bitmapData.draw(sprite);
var bitmap:Bitmap = new Bitmap(bitmapData);
bitmaps.push(bitmap);
sprite.removeChild(inventory[order[i]]);
}
return bitmaps;
}
}
When the last element in order is called (1), the resulting Bitmap does not contain a textfield.
When the loop runs the first time, adding the TextField inventory[0] to a Sprite, the Sprite is drawn as expected. The second box is drawn, using inventory[1]. However, when I run the same code trying to draw inventory[1] a second time, nothing happens. The same would happen if I try to draw inventory[0], but if I use a TextField that has yet to be added to a Sprite (ex. inventory[2], should one exist), it draws as expected.
Any ideas?
Thanks in advance.
I have several movie clips on the stage of my main .fla named btn1-btn7 which will act as buttons. I have a class file named Functions.as where an event listener is created when a button is clicked. onButtonClicked is just going to a frame on the timeline.
obj.addEventListener(MouseEvent.CLICK, onButtonClicked);
I would like the ability to set the buttonMode, visibility, etc. of all of the buttons simultaneously. I have been looking into this for a few hours and am not able to find any solutions. I am now looking into adding them to a vector (which is a new concept for me), but I am not sure how to go about executing this properly. This is what I have so far.
public var buttons:Vector.<MovieClip > = new Vector.<MovieClip > ();
function addButtons()
{
buttons.push(btn1,btn2,btn3,btn4,btn5,btn6,btn7);
for (var i:int; i<buttons.length; i++)
{
trace(buttons[i].name);
}
}
How would I go about, for example, adding the event listener to all of the objects? I will also be setting the buttonMode to true, and making them all invisible simultaneously. I don't even know if it's possible to accomplish this. Thank you in advance for any suggestions.
I'm going to asume that you use timeline code, and have instances of the buttons already placed on the stage. So, first, create the vector:
var _btns:Vector.<MovieClip> = new Vector.<MovieClip>;
_btns.push(btn1,btn2,btn43....) //add all the buttons
Than, you can init the properties of all the buttons:
var _mc:MovieClip;//helper var
for(var i:int=0,i<_btns.length;i++)
{
_mc = _btns[i];
_mc.visible = false;
_mc.buttonMode = true;
_mc.addEventListener(MouseEvent.CLICK, onClick);
}
Then, the event handler:
function onClick(e:MouseEvent):void
{
for(var i:int=0,i<_btns.length;i++)//reset all the buttons
{
_btns[i].visible = false;
}
_mc = MovieClip(e.eventTarget);
_mc.visible = true; //make visible the clicked one
}
You just need to do what you are doing with the .name property in your example code. You need to loop thru every single button in your array (or vector, if you prefer). Here is an example how to set the property of buttonMode:
function setButtonMode(b:Boolean):void {
for(var i:int=0; i<buttons.length; i++) {
var btn:MovieClip = buttons[i]; //store the current reference in a var for faster access
btn.buttonMode = b;
btn.mouseChildren = !b;
}
}
I have several movie clips into a frame the size of the stage and I have to switch through a button between those pages.
So if I press button, should all the other frames removeChild and the one where he is called to go addChild.
Edit: I have the actionscript placed in the timeline of the movieClip so the button is not on the stage but I put in the movie clip using action script.
So what DodgerThud showed here is not possible because the button has changed since that is in the movieClip('s).
I think I need to place the same code in every movieClip.
Put all of your MovieClips into a Vector or Array.
When you click the button, you should cycle through the Vector/Array and check if the MovieClip is currently on stage with contains(DisplayObject). If the Movieclip IS currently on the stage, remove it and add another one to the stage, for example, the next one in the Vector/Array.
var vec:Vector.<MovieClip> = new Vector.<MovieClip>
vec[0] = new MovieClip();
vec[1] = new MovieClip(); //example with MovieClips
vec[2] = new MovieClip();
addChild(vec[0]); //add one of the MovieClips to stage
button.addEventListener(MouseEvent.CLICK, onClick);
function onClick(e:MouseEvent):void
{
for(var i:int = 0; i < vec.length; i++) //go through the Vector one by one
{
if(contains(vec[i]) //if the Object at position i in the Vector is on stage
{
removeChild(vec[i]); //remove the Object
var next:int = i; //create a temporary holder
if(next == vec.length) //check if the displayed Object was the last in the list
{
next = 0; //if so, set to 0
}else{
next++; //otherwise, only add 1
}
addChild(vec[next]); //add the next Object to the stage. If the removed Object was the last in the Vector, it'll add the first Object in the Vector to the list
break; //escape the for loop, otherwise it'll always only show the last Object
}
}
}
Something like ...
function tueHandler(e:MouseEvent):void
{
while(numChildren > 0)
removeChildAt(0);
addChild(whatever);
}
To make things quick, I have an arrangement of tiles that a player and an enemy are on.
public static var floor1:Array = new Array(7);
floor1[0] = [0,1,1,1,1,1,0];
floor1[1] = [1,1,1,1,1,1,1];
floor1[2] = [1,1,1,0,1,1,1];
floor1[3] = [1,1,0,0,0,1,1];
floor1[4] = [1,1,1,0,1,1,1];
floor1[5] = [1,1,1,1,1,1,1];
floor1[6] = [0,1,1,1,1,1,0];
public function Main()
{
var tilew:int = 60;
var tileh:int = 60;
for (var i:int=0; i<floor1.length; i++)
{
for (var u:int=0; u<floor1[i].length; u++)
{
var cell:MovieClip = new Tile();
cell.gotoAndStop(floor1[i][u]);
cell.x = ((u-i)*tileh);
cell.y = ((u+i)*tilew/2);
addChild(cell);
cell.addEventListener(MouseEvent.ROLL_OVER, mouseover);
cell.addEventListener(MouseEvent.ROLL_OUT, mouseout);
cell.addEventListener(MouseEvent.CLICK, mouseclick);
cell.addEventListener(Event.ENTER_FRAME, beginfloor1);
}
}
var player:Player = new Player();
addChild(player);
player.mouseEnabled = false;
player.x = 5 * (tileh);
player.y = 5 * (tilew/2);
var enemy:Enemy = new Enemy();
addChild(enemy);
enemy.mouseEnabled = false;
enemy.x = 9 * (tileh);
enemy.y = 9 * (tileh/2);
My goal is to have the enemy move randomly on tiles in his range. What I did was create a square graphic called enemyVisionArea that checks which tile is hitting the enemy, which is basically surrounding tiles.
I have a timer function that tells the enemy to move every 5 seconds if the player isn't near him and if he's next to an available tile.
function timerenemy (event:TimerEvent){
if (enemy.enemyVisionArea.hitTestObject(enemyMover) && !player.visionPoint.hitTestObject(enemyMover.tileMiddle))
{
enemy.x = (enemyMover.x)+55;
enemy.y = (enemyMover.y)+20;
trace("moved");
}
}
enemyMover is a variable that I made equal to the tile objects.
function beginfloor1(event:Event)
{
enemyMover = event.currentTarget as Tile;
}
It just stays where it is. I'm just want to have the enemy move on its own on any tile that its enemyVisionArea is hitTesting a nearby tile. The beginfloor1 function doesn't seem to be working. Is there any way I can declare enemyMover = event.currentTarget as Tile and have the enemy move on a random tile that its enemyVisionArea is hitTesting?
If this is confusing, I can post the full code.
You are assigning 49 enterframe listeners which are called in sequence, and they ALL change one single variable to the cell they are attached to. Of course, the last tile is what's always assigned.
I expect that you want an enemy to check if there's a tile available for it to move to. You are essentially checking for one tile which is enemyMover - how do you determine what's that tile? You have to check all available tiles that are around the enemy, make a list of them and select one out of that list that's not the current tile, then move the enemy there.
So, first you need a complete tileset to be addressable from somewhere. The best way will be to declare a class-wide var tileset:Array and fill it where you make new tiles. Drop the Event.ENTER_FRAME listener from the code there, as it's useless. Then, in your timerevent that's for the enemy you do check all of the tileset if they are within your enemy's vision area (you use hitTestObject, I'd use clear distance grid-wise or coordinate-wise - it's a whole lot faster), if so, you add them to the TEMPORARY array you create within that function. Of course, if your enemy is at the currently processed cell, you ignore it - you have to move your enemy, not make him stand in place. Then, select (somehow, it's up to you) what cell your enemy should move to, and execute a move. Yes, if you want your enemy to move randomly, select a cell at random by its index via Math.floor(Math.random()*selectedcells.length).
So, in short, my problem is this. I am using a variable which is a movieclip loaded from an external swf. I want to "spawn" multiple instances of the movieclip that all react to the same code, so for example if I say var1.x = 100, they all are at 100x. But my problem is when I run addChild(var1) multiple times(I'm not actually typing in addChild(var1) over and over, I just have it set to add them at random times), the new child just replaces the old one, instead of making multiple movieclips. Should I do something like
var var1:MovieClip
var var2:MovieClip = new var1 ?(which doesnt work for me btw, gives me errors)
Oh, heres the code, and also, I am pretty new to as3 fyi, still don't even know how arrays work, which was my second guess to the problem.
var zombieExt:MovieClip;
var ldr2:Loader = new Loader();
ldr2.contentLoaderInfo.addEventListener(Event.COMPLETE, swfLoaded2);
ldr2.load(new URLRequest("ZombieSource.swf"));
function swfLoaded2(event:Event):void
{
zombieExt = MovieClip(ldr2.contentLoaderInfo.content);
ldr2.contentLoaderInfo.removeEventListener(Event.COMPLETE, swfLoaded2);
//zombieExt.addEventListener(Event.ENTER_FRAME, moveZombie)
zombieExt.addEventListener(Event.ENTER_FRAME,rotate2);
function rotate2 (event:Event)
{
var the2X:int = playerExt.x - zombieExt.x;
var the2Y:int = (playerExt.y - zombieExt.y) * 1;
var angle = Math.atan(the2Y/the2X)/(Math.PI/180);
if (the2X<0) {
angle += 180;
}
if (the2X>=0 && the2Y<0) {
angle += 360;
}
//angletext.text = angle;
zombieExt.rotation = (angle*1) + 90;
}
playerExt.addEventListener(Event.ENTER_FRAME,spawn1);
function spawn1 (event:Event)
{
if(playerExt.y < 417)
{
var someNum:Number = Math.round(Math.random()*20);
if(someNum == 20)
{
addChild(zombieExt)
zombieExt.x = Math.round(Math.random()*100)
zombieExt.y = Math.round(Math.random()*100)
}
}
}
}
addChild() does not create new instances. It is used to add an already created instance to the display list. If you call addChild() multiple times on the same instance then you are just readding itself.
Also each instance is unique, you can not globally change the x position of an instance by changing another one of them. What you would do is as Henry suggests and add each new instance of a MovieClip into an array, then whenever you change something you can loop through the array and apply the changes to each instance.
You can not go var2:MovieClip = new var1 either since var1 is an instance and not a class.
Here's a different method of receiving loaded MovieClips, which i use when i need many copies of the item.
in the swf you are loading, give the target movieclip a linkage name in the library, for this example i will use "foo"
private var loadedSwfClass:Class
private var newZombie:MovieClip;
private var zombieArray:Array = new Array();
function swfLoaded2(event:Event):void
{
loadedSwfClass = event.target.applicationDomain.getDefinition("foo");
for(var n:int = 0; n<100; n++){
newZombie = new loadedSwfClass()
zombieArray.push(newZombie);
addChild(newZombie);
}
}
as per this tutorial
http://darylteo.com/blog/2007/11/16/abstracting-assets-from-actionscript-in-as30-asset-libraries/
although the comments say that
var dClip:MovieClip = this;
var new_mc = new dClip.constructor();
this.addChild(new_mc);
will also work.
It sounds like you might be accessing the same instance some how in your code. It would be helpful to see your code to figure this one out.
If I wanted to load in one swf files and add a MovieClip multiple times I would place it in the library of that SWF file. And then instantiate it and store it into an object pool or a hash or some list.
// after the library were finished loading
var list:Array = [];
for(var i:int=0; i<10; i++) {
var myCreation:MySpecialThing = new MySpecialThing();
addChild(myCreation);
list.push(myCreation);
}
where my library would contain a linkage to the class MySpecialThing.
Calling addChild(var1) multiple times on the same parent doesn't have any effect (unless you have added another child to the same parent in between, in which case it will change the child index and bring var1 to the top). If you call it on different parents, it will just change the parent of var1, doesn't duplicate. Call addChild(new MovieClassName()) at random times instead to add new copies of it. Use an array as suggested here to access them later.
Wow, thanks there henry, just using an array did exactly what I needed, and made things alot simpler.
when you load in using a loader you only get 1 instance, however you can do some funky reflection to determine what class type the given loader.content is, and then instantiate them using that. For Example:
var loader:Loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, loader_completeHandler);
loader.load(new URLRequest("ZombieSource.swf"));
var classType:Class;
function loader_completeHandler(evt:Event):void
{
var loadInfo:LoaderInfo = (evt.target as LoaderInfo);
var loadedInstance:DisplayObject = loadInfo.content;
// getQualifiedClassName() is a top-level function, like trace()
var nameStr:String = getQualifiedClassName(loadedInstance);
if( loadInfo.applicationDomain.hasDefinition(nameStr) )
{
classType = loadInfo.applicationDomain.getDefinition(nameStr) as Class;
init();
}
else
{
//could not extract the class
}
}
function init():void
{
// to make a new instance of the ZombieMovie object, you create it
// directly from the classType variable
var i:int = 0;
while(i < 10)
{
var newZombie:DisplayObject = new classType();
// your code here
newZombie.x = stage.stageWidth * Math.random();
newZombie.x = stage.stageHeight * Math.random();
i++;
}
}
Any problems let me know, hope this helps.