I'll just start by saying that I am a bit new to programming, and I apologize if this is a stupid question.
I have a timer running in my application that at every interval, creates an a new instance of a MovieClip called blueBall.Here is my code:
var randomX:Number = Math.random() * 350;
var newBlue:mc_BlueBall = new mc_BlueBall ;
newBlue.x = randomX;
newBlue.y = -20;
for(var i:Number = 0;i < blueArray.length; i++)
{
newBlue.name = "newBlue" + i;
}
blueArray.push(newBlue);
addChild(newBlue);
}
var randomX:Number = Math.random() * 350;
var newBlue:mc_BlueBall = new mc_BlueBall ;
newBlue.x = randomX;
newBlue.y = -20;
for(var i:Number = 0;i < blueArray.length; i++)
{
newBlue.name = "newBlue" + i;
}
blueArray.push(newBlue);
addChild(newBlue);
}
My question is: How do I make it so that each newly created object in the array has it's own hitTestObject Event? I want to make it so that if the if the user's icon touches one of the newBlue objects, that newBlue object with be removed, and the score will go up a point.
Thanks!
this is my first time answering a question here but I hope I can help! Assuming you have a timer for your main game loop, you should try something like this once per frame:
//For each blue ball in the array
for(var i:int = 0; i < blueArray.length; i++) {
//If it touches the player
if(blueArray[i].hitTestObject(thePlayerMC)) {
//Increment the score
score++;
//Remove from stage and array
removeChild(blueArray[i]);
blueArray.splice(i, 1); //<-At index i, remove 1 element
//Decrement i since we just pulled it out of the array and don't want to skip the next array item
i--;
}
}
This is sort of the quick and dirty solution, but highly effective and commonly used.
Related
Hey everyone so I have an array of Movie Clip Objects called aPlanetArray and what I am trying to accomplish is having all the objects in the array move down to a certain positing and then stop using tweenLite or any other method that would accomplish this. I know I can do it with y+=2 but I want all objects to move down the screen real quick in a bounce like effect using Tweenlite and to keep their distance ratios.
Here is how I have them setup when added to the stage:
//Numbers
xSpacing = 100;
ySpacing = 180;
startPoint = new Point((stage.stageWidth / 2), (stage.stageHeight / 2) );
private function addOuterPlanets():void
{
for (var i:int = 0; i < nPlanets; i++)
{
outerPlanets = new mcOuterPlanets();
outerPlanets.x = startPoint.x + (xSpacing * i);
outerPlanets.y = startPoint.y - (ySpacing * i);
stage.addChild(outerPlanets);
aPlanetArray.push(outerPlanets);
}
}
and when I tween them I am using this tweenlite function:
for each(var allPlanets:mcOuterPlanets in aPlanetArray)
{
TweenLite.to(allPlanets, 5.0, {y:550, ease:Back.easeOut});
}
This works perfect but all objects in array line up together and don't keep their spacing against one another. Any ideas would be appreciated thank you!
The simplest way would be to just have all the planets in a parent container and then move the container instead of the planets.
var planetContainer:Sprite = new Sprite();
function addPlanetsToContainer():void{
for (var i:int = 0; i < aPlanetArray.length; i++){
planetContainer.addChild(aPlanetArray[i]);
}
}
And now you can do your tween on planetContainer
Now to put the character on a planet, you can either do
planet.addChild(character);
or
character.x = planet.x + planet.parent.x;
character.y = planet.y + planet.parent.y;
I am (successfully) creating a column of boxes via a loop, the meat of which is:
for(var i=0; i < MAX_ROWS + 1; i++){
for(var o=0; o < MAX_COLS + 1; o++){
var currentTile:MemberBox = new MemberBox();
currentTile.x = i*150;
currentTile.y = o*25;
currentTile.name = "b"+o;
memberBox.addChild(currentTile);
}}
Now I need to add a textfield to each box, which will later be populated with data from an array. I tried adding each textfield to an array in the for loop and then calling from the array, but the textfields still all have the same name so only the last one called actually works...
Here is what I have - it almost does what I need, but it only adds text to the last box created.
var txtArray:Array = new Array();
for(var i=0; i < MAX_ROWS + 1; i++){
for(var o=0; o < MAX_COLS + 1; o++){
var currentTile:MemberBox = new MemberBox();
currentTile.x = i*150;
currentTile.y = o*25;
currentTile.name = "b"+o;
memberBox.addChild(currentTile);
currentTile.addChild(memberBoxText);
memberBoxText.width = 150;
memberBoxText.height = 25;
txtArray[o] = memberBoxText;
txtArray[o].text = "test"+o;
}}
Well you didn't declare anywhere memberBoxText so I asume you added it manually through flash builder. You are not making new instance of your textField.Try inserting this into for loop:
var memberTxt:TextField=new TextField(); currentTile.addChild(memberTxt);
:)
I'm currently creating a small flash game using ActionScript and after receiving help for another issue I had on here, I've encountered another one when moving onto a different part of it.
This is the code I currently have:
var asteroidSpeed = 5;
var soundExplosion:Sound = new ExplosionSound();
stage.addEventListener(KeyboardEvent.KEY_DOWN, onKDown);
var newLaser:Array = new Array();
function onKDown(e:KeyboardEvent):void {
keys[e.keyCode] = true;
if (e.keyCode == 32) {
/*laser.x = player.x + player.width/2 - laser.width/2;
laser.y = player.y;
addChild(laser);*/
for (var count=0; count < 4; count++) {
newLaser[count] = new shipLaser();
newLaser[count].x = player.x + player.width/2 - newLaser.width/2;
newLaser[count].y = player.y;
addChild(newLaser[count]);
}
}
}
var spawnTimer:Timer = new Timer(3000); //timer will tick every 3 seconds
spawnTimer.addEventListener(TimerEvent.TIMER, spawn, false, 0, true); //let's run the spawn function every timer tick
spawnTimer.start();
var spawnPoints:Array = [0,100,200,300,400,500,550]; //your list of spawn x locations
var spawnAmount:int = 4; //how many asteroids to have on the screen at once (you could increase this over time to make it more difficult)
var asteroids:Vector.<asteroidOne> = new Vector.<asteroidOne>(); //the array for your asteroids - changed to vector for possible performance and code hint improvement (basically the same as Array but every object has to be of the specified type)
spawn(); // calling it immediately
//calling this will spawn as many new asteroids as are needed to reach the given amount
function spawn(e:Event = null):void {
if(asteroids.length >= spawnAmount) return; //let's not bother running any of the code below if no new asteroids are needed
spawnPoints.sort(randomizeArray); //lets randomize the spwanPoints
var spawnIndex:int = 0;
var a:asteroidOne; //var to hold the asteroid every loop
while (asteroids.length < spawnAmount) {
a = new asteroidOne();
a.x = spawnPoints[spawnIndex];
spawnIndex++; //incriment the spawn index
if (spawnIndex >= spawnPoints.length) spawnIndex = 0; //if the index is out of range of the amount of items in the array, go back to the start
a.y = -50;
asteroids.push(a); //add it to the array/vector
addChild(a); //add it to the display
}
}
player.addEventListener(Event.ENTER_FRAME, obstacleMove);
function obstacleMove(evt:Event):void {
for (var i:int = 0; i < asteroids.length;i++) {
asteroids[i].y += asteroidSpeed;
if (asteroids[i].y > stage.stageHeight || asteroids[i].x > stage.stageWidth || asteroids[i].x < -asteroids[i].width || asteroids[i].y < -asteroids[i].height) {
//object is out of the bounds of the stage, let's remove it
removeChild(asteroids[i]); //remove it from the display
asteroids.splice(i, 1); //remove it from the array/vector
continue; //move on to the next iteration in the for loop
}
if (player.hitTestObject(asteroids[i])) {
trace("HIT");
removeChild(asteroids[i]);
asteroids.splice(i,1);
removeChild(player);
// will add end-game trigger here soon.
}
}
}
function randomizeArray(a:*, b:*):int {
return (Math.random() < .5 ) ? 1 : -1;
}
player.addEventListener(Event.ENTER_FRAME, laserCollision);
function laserCollision(evt:Event):void {
for (var i in newLaser) {
for (var a in asteroids) {
if (asteroids[a].hitTestObject(newLaser[i])) {
trace("BOOM!");
var soundExplosion:Sound = new ExplosionSound();
var channel1:SoundChannel = soundExplosion.play();
removeChild(newLaser[i]);
removeChild(asteroids[a]);
}
}
}
}
addEventListener(Event.ENTER_FRAME, laserEnter);
function laserEnter(event:Event):void {
for (var i in newLaser) {
newLaser[i].y -= laserSpeed;
// Moves the laser up the screen
if(newLaser[i].y == 0) {
removeChild(newLaser[i]);
}
}
}
What I want to do is when an instance from the newLaser array collides with an instance of the asteroids array, to remove both from the scene / indexes (but only the two that collided and not all of the ones on the scene).
Currently, when a laser hits an asteroid, it removes the asteroid but not the laser and one of the asteroids on the current row stops moving and then the next row of asteroids spawns but does not move down.
I get this error too:
ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller.
at flash.display::DisplayObjectContainer/removeChild()
at _8_fla::MainTimeline/obstacleMove()
Any help would be greatly appreciated.
You error, is likely because you are running 3 separate enter frame handlers in the same scope, and removing items from arrays and display lists (that are referenced in multiple enter frame handlers). So you asteroid is removed from the display list in one, and then you try to remove it again in another.
There are also a whole lot of other issues with your code that will cause errors and undesired results. Things like for(var i in newLasers) - in that kind of loop, i will refer to the actual laser object not the index of the array. I've re-factored your code and added lots of code comments to hopefully give you an idea of where you were going wrong:
var spawnTimer:Timer = new Timer(3000); //timer will tick every 3 seconds
var spawnPoints:Array = [0, 100, 200, 300, 400, 500, 550]; //your list of spawn x locations
var spawnAmount:int = 4; //how many asteroids to have on the screen at once (you could increase this over time to make it more difficult)
var asteroidSpeed = 5;
var asteroids:Vector.<asteroidOne> = new Vector.<asteroidOne>(); //the array for your asteroids - changed to vector for possible performance and code hint improvement (basically the same as Array but every object has to be of the specified type)
var lasers:Vector.<shipLaser> = new shipLaser(); //the array of lasers
var maxLasers:int = 4; //the maximum amount lasers allowed at any given time
var soundExplosion:Sound = new ExplosionSound();
stage.addEventListener(KeyboardEvent.KEY_DOWN, onKDown);
player.addEventListener(Event.ENTER_FRAME, gameLoop);
spawnTimer.addEventListener(TimerEvent.TIMER, spawn, false, 0, true); //let's run the spawn function every timer tick
spawnTimer.start(); //start the spawn timer
spawn(); // calling it immediately
function onKDown(e:KeyboardEvent):void{
if (e.keyCode == 32) {
//create ONE laser per button push (instead of 4 identical lasers)
if(lasers.length < maxLasers){ //if player hasn't reached the maximum amount of lasers available
var tmpLaser:shipLaser = new shipLaser();
tmpLaser.x = player.x + player.width / 2 - tmpLaser.width / 2;
tmpLaser.y = player.y;
addChild(tmpLaser);
lasers.push(tmpLaser);
}
}
}
//calling this will spawn as many new asteroids as are needed to reach the given amount
function spawn(e:Event = null):void {
if (asteroids.length >= spawnAmount)
return; //let's not bother running any of the code below if no new asteroids are needed
spawnPoints.sort(randomizeArray); //lets randomize the spwanPoints
var spawnIndex:int = 0;
var a:asteroidOne; //var to hold the asteroid every loop
while (asteroids.length < spawnAmount)
{
a = new asteroidOne();
a.x = spawnPoints[spawnIndex];
spawnIndex++; //incriment the spawn index
if (spawnIndex >= spawnPoints.length)
spawnIndex = 0; //if the index is out of range of the amount of items in the array, go back to the start
a.y = -50;
asteroids.push(a); //add it to the array/vector
addChild(a); //add it to the display
}
}
function gameLoop(e:Event):void {
//LOOP through all the asteroids, give it a label (asteroidLoop) so we can break/continue it inside other loops
asteroidLoop: for (var i:int = 0; i < asteroids.length; i++) {
//check if asteroid is out of bounds
if (asteroids[i].y > stage.stageHeight || asteroids[i].x > stage.stageWidth || asteroids[i].x < -asteroids[i].width || asteroids[i].y < -asteroids[i].height) {
//object is out of the bounds of the stage, let's remove it
removeChild(asteroids[i]); //remove it from the display
asteroids.splice(i, 1); //remove it from the array/vector
continue; //forget the rest of the code below and move on to the next iteration in the for loop since the asteroid is gone
}
//check if any lasers are colliding with this asteroid
for (var j:int = lasers.length-1; j >= 0;j--) { //iterate over all lasers backwards
if (asteroids[i].hitTestObject(lasers[j])){
trace("BOOM!");
var soundExplosion:Sound = new ExplosionSound();
var channel1:SoundChannel = soundExplosion.play();
//remove the asteroid
removeChild(asteroids[i]); //remove it from the display
asteroids.splice(i, 1); //remove it from the array/vector
//remove the laser
removeChild(lasers[j]);
lasers.splice(j, 1);
continue asteroidLoop; //break completely out of this inner for-loop (lasers) since the asteroid in the outer loop was removed, and move on to the next asteroid
}
}
//check if this asteroid collides with the player
if (player.hitTestObject(asteroids[i])){
trace("HIT");
//remove the asteroid
removeChild(asteroids[i]); //remove it from the display
asteroids.splice(i, 1); //remove it from the array/vector
removeChild(player);
spawnTimer.stop(); //stop spawning new asteroids
//will add end-game trigger here soon.
break; //break completely out of the asteroid loop if it's game over (as there's no point in checking the rest of the asteroids)
}
//we've made it this far, so let's just move this asteroid
asteroids[i].y += asteroidSpeed;
}
for (var i:int = lasers.length-1; i >= 0;i--) { //iterate backwards
lasers[i].y -= laserSpeed;
// Moves the laser up the screen
if (lasers[i].y <= 0){ //make this less than or equal to 0
removeChild(lasers[i]); //remove the laser from the display list
lasers.splice(i, 1); //remove the laser from the array
}
}
}
function randomizeArray(a:*, b:*):int {
return (Math.random() < .5) ? 1 : -1;
}
I'm trying to create on my scene an n x n size matrix, each element should be a Movie Clip, named Table, already prepared in the Library.
var tables:Array.<Table> = new Array.<Table>(tablesDimension, tablesDimension);
for (var i:int = 0; i < tablesDimension; i++) {
for (var j:int = 0; j < tablesDimension; j++) {
var tempTable:Table = new Table();
tempTable.x = i * 150 + 100;
tempTable.y = j * 100 + 100;
stage.addChild(tempTable);
tables.push(tempTable);
trace(tables[0][0].x);
}
}
A Movie Clip (in this case, Table) cannot be put in two dimensional arrays? Should I use some type conversion in my last line, at the trace(tables[0][0].x); to suggest to the compiler: it's about a Table type object?
The error message I receive: "Type parameters with non-parameterized type"
I'm not sure why you're trying to do with your first line but it's incorrect.
To quote the adobe actionscript reference:
The Array() constructor function can be used in three ways.
See this adobe reference link on Array creation. Or you can use Vectors (which are typed, like you seem to want to have).
So basically you want to create an Array, that will itself contain arrays. You need to create the arrays contained in it when you go through the first one. Else you will try to push into non existing elements. Also, you need to add the index as RST said.
var tables:Array.<Table> = new Array();
for (var i:int = 0; i < tablesDimension; i++) {
tables[i] = new Array();
for (var j:int = 0; j < tablesDimension; j++) {
var tempTable:Table = new Table();
tempTable.x = i * 150 + 100;
tempTable.y = j * 100 + 100;
stage.addChild(tempTable);
tables[i].push(tempTable);
}
}
trace(tables[0][0].x);
This should work.
I think you are missing an index. Try this
for (var i:int = 0; i < tablesDimension; i++) {
for (var j:int = 0; j < tablesDimension; j++) {
var tempTable:Table = new Table();
tempTable.x = i * 150 + 100;
tempTable.y = j * 100 + 100;
stage.addChild(tempTable);
tables[i].push(tempTable);
trace(tables[0][0].x);
}
}
So I am building a deck of cards. I have them blocked out, and appearing correctly on the screen. Now I need to build an array with numbers 1-16, and display them randomly on the cards without duplicating any numbers. My main problem is I can't figure out how to display the random numbers on the cards. I have filled the array, got the cards displaying correctly, I can even display the numbers in order, but can't figure out the code to display the numbers randomly. Thanks in advance.
Below is the code I have so far, which displays the cards with numerically ordered numbers.
var numberOfColumns=8;
var cardNumber:Array = new Array();
//---"for" function to display card columns---\\
for(var i:int = 1; i < 17; i++) {
var card = new Card();
cardNumber[i]= i;
card.x = ((i-1) % numberOfColumns) * 70;
card.y = (Math.floor ((i-1)/numberOfColumns) * 80);
card.cardTxt.text = i;
trace(i);//trace card count in Output
addChild(card);//add object to display list
}
trace(cardNumber);
One solution ( definetly not the best ) would be to fill another array with only indexes and then randomly splice it, like this :
var cardCount:int = 17;
var indexesArray:Array = [];
for(var j:int = 1; j < cardCount; j++)
indexesArray.push(j)
for(var i:int = 1; i < cardCount; i++) {
var card = new Card();
//Use a random index inside the array length
var randIndex:int = Math.round(Math.random()*indexesArray.length);
cardNumber[i]= indexesArray[idIndex];
//Strip out our used index so we can't use it again
indexesArray.splice( randIndex, 1 );
//... your code
}
However I'm pretty sure some logic freak can come up with a more optimized/clean solution, and avoid the need for a second array.