Im trying to make a simple game in AS3 where a player eats as many balls as possible. i dont know how to code very well and im having trouble trying to add a new ball to the stage every time one is eaten.
this is the code i have in main.as at the moment.
private var startX:Number = 512;
private var startY:Number = 384;
private var speed:Number = 8;
var player1;
var player2;
var player3;
var theBall;
player1 = new player(50,384, 1);
player2 = new player(944,384,2);
player3 = new player(488,84,3);
stage.addChild(player1);
stage.addChild(player2);
stage.addChild(player3);
if(theBall.hitTestObject(player1) || theBall.hitTestObject(player2) || theBall.hitTestObject(player3))
{
//removes the ball from the stage
trace("a player has eaten a ball");
stage.removeChild(theBall);
//adds new ball
//stage.addChild(theBall);
//reset x and y
startX = Math.random()*speed-speed/2;
startY = Math.random()*speed-speed/2;
}
In the ball.as ive specified how the ball should move randomly, start in the center of the stage and bounce off walls.
no errors appear, the code just doesnt work. how do you make a new ball re spawn in the center of the stage when one is eaten? do i declare this where i tried to in the main, or in the ball.as?
If you have a "ball" Object, in the way you have a "player" Object, then...
//removes the ball from the stage
trace("a player has eaten a ball");
stage.removeChild(theBall);
//reset x and y
startX = Math.random()*speed-speed/2;
startY = Math.random()*speed-speed/2;
//adds new ball
theBall = new ball();
theBall.x = stage.stageWidth/2;
theBall.y = stage.stageHeight/2;
stage.addChild( theBall );
You reuse the "theBall" variable, since you've removed the eaten instance from the stage. The old "theBall" instance is thrown out with stage.removeChild(theBall), and then you make a new one and add that new one to the stage.
Before your code, if the BALL isn't called and prepared for your stage. It might not work.
In your Library, check the movie_clip that contain the ball... And under the row "AS LINKAGE" next to the name of the Movie Clipe... You should call it for example "BALL_TEST"
In your AS3 code :
Add this before your code
var ball_bounce:BALL_TEST = new BALL_TEST();
Then your code
If i did correctly understand your question...
Kind regards
Related
Im making a game where Meteorites fall from the sky and my plane has to dodge them. So far all i can do is make 1 meteorite fall. Some1 please show me the code for setting up timers to make objects spawn and fall from a randomX. Thanks.
Here's one simple way to do it:
var timer:Timer = new Timer(1000);
timer.addEventListener(TimerEvent.TIMER, spawnMeteor);
timer.start();
function spawnMeteor(e:Event):void{
const SCREEN_WIDTH:Number = 480;
var randomX:Number = Math.random() * SCREEN_WIDTH;
var meteor:Meteor = new Meteor(randomX, -85);
world.add(meteor);
}
I'm trying to create a movie clip every time I click the stage. I know that addChild does not add new instances, so every time I click, the previous cube disappears. I tried using an array to create multiple movie clips with no success. I'm pretty new to ActionScript, so I'm sorry for this naive question.
stage.addEventListener(MouseEvent.CLICK, spawnCube);
var i:int = 0;
var p1:cube = new cube();
function spawnCube(event:MouseEvent):void
{
p1.name = "p1";
p1.x = mouseX;
p1.y = mouseY;
arr.push(p1);
addChild(arr[i]);
i++;
}
Place new Cube() call into your click handler, this way it'll create a new cube properly.
function spawnCube(event:MouseEvent):void
{
var p1:Cube=new Cube(); // this
p1.x = mouseX;
p1.y = mouseY;
arr.push(p1);
addChild(p1); // also this, because now "p1" has a new cube each time
i++;
}
You have only one instance of Cube so every time you call addChild() you just place the same instance in other place. You have to create new cube var p1:cube = new cube(); every time you click.
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).
I'm trying to make a custom animated/shooter, from this tutorial: http://flashadvanced.com/creating-small-shooting-game-as3/
By custom, I mean customized, ie, my own version of it.
In it's actionscript, there's a timer event listener with function: timerHandler()
This function adds and removes child "star" objects on the stage (which the user has to shoot at):
if(starAdded){
removeChild(star);
}
and :
addChild(star);
Code works great, but error occurs on scene 2.
The code works great, and I even added some code while learning via google and stackflow to this flash file. I added Scene 2 to it too, and had it called after 9 seconds of movie time. But when it goes to Scene 2, it still displays the star objects and I've been unable to remove these "star" object(s) from Scene 2.
Here's the code I added:
SCENE 1:
var my_timer = new Timer(5000,0); //in milliseconds
my_timer.addEventListener(TimerEvent.TIMER, catchTimer);
my_timer.start();
var myInt:int = getTimer() * 0.001;
var startTime:int = getTimer();
var currentTime:int = getTimer();
var timeRunning:int = (currentTime - startTime) * 0.001; // this is how many seconds the game has been running.
demo_txt.text = timeRunning.toString();
function catchTimer(e:TimerEvent)
{
gotoAndPlay(1, "Scene 2");
}
SCENE 2:
addEventListener(Event.ENTER_FRAME,myFunction);
function myFunction(event:Event) {
timer.stop();
timer.removeEventListener(TimerEvent.TIMER, timerHandler);
stage.removeChild(star);
stage.removeEventListener(MouseEvent.MOUSE_MOVE, cursorMoveHandler);
my_timer.stop(); // you might need to cast this into Timer object
my_timer.removeEventListener(TimerEvent.TIMER, catchTimer);
Mouse.show();
}
stop();
=====================================================
I'm quite new as3, and have just created an account on StackOverflow... even though I've known and read many codes on it since quite some time.
Here's the Edited New Complete Code:
//importing tween classes
import fl.transitions.easing.*;
import fl.transitions.Tween;
//hiding the cursor
Mouse.hide();
//creating a new Star instance
var star:Star = new Star();
var game:Game = new Game();
//creating the timer
var timer:Timer = new Timer(1000);
//we create variables for random X and Y positions
var randomX:Number;
var randomY:Number;
var t:int = 0;
//variable for the alpha tween effect
var tween:Tween;
//we check if a star instance is already added to the stage
var starAdded:Boolean = false;
//we count the points
var points:int = 0;
//adding event handler on mouse move
stage.addEventListener(MouseEvent.MOUSE_MOVE, cursorMoveHandler);
//adding event handler to the timer
timer.addEventListener(TimerEvent.TIMER, timerHandler);
//starting the timer
timer.start();
addChild(game);
function cursorMoveHandler(e:Event):void{
//sight position matches the mouse position
game.Sight.x = mouseX;
game.Sight.y = mouseY;
}
function timerHandler(e:TimerEvent):void{
//first we need to remove the star from the stage if already added
if(starAdded){
removeChild(star);
}
//positioning the star on a random position
randomX = Math.random()*500;
randomY = Math.random()*300;
star.x = randomX;
star.y = randomY;
//adding the star to the stage
addChild(star);
//changing our boolean value to true
starAdded = true;
//adding a mouse click handler to the star
star.addEventListener(MouseEvent.CLICK, clickHandler);
//animating the star's appearance
tween = new Tween(star, "alpha", Strong.easeOut, 0, 1, 3, true);
t++;
if(t>=5) {
gotoAndPlay(5);
}
}
function clickHandler(e:Event):void{
//when we click/shoot a star we increment the points
points ++;
//showing the result in the text field
points_txt.text = points.toString();
}
And on Frame 5 :
//timer.stop();
//timer.removeEventListener(TimerEvent.TIMER, timerHandler);
// uncomment lines above if "timer" is something you've made
stage.removeChild(star);
stage.removeEventListener(MouseEvent.MOUSE_MOVE, cursorMoveHandler);
timer.stop(); // you might need to cast this into Timer object
timer.removeEventListener(TimerEvent.TIMER, timerHandler);
Mouse.show();
stop();
There's no Scene 2 now, in this new .fla file...
Here's a screenshot of the library property of my flash file...: http://i.imgur.com/d2cPyOx.jpg
You'd better drop scenes altogether, they are pretty much deprecated in AS3. Instead, use Game object that contains all the cursor, stars and other stuff that's inside the game, and instead of going with gotoAndPlay() do removeChild(game); addChild(scoreboard); where "scoreboard" is another container class that will display your score.
Regarding your code, you stop having a valid handle to stage that actually contains that star of yours, because your have changed the scene. So do all of this before calling gotoAndPlay() in your catchTimer function.
function catchTimer(e:TimerEvent)
{
//timer.stop();
//timer.removeEventListener(TimerEvent.TIMER, timerHandler);
// uncomment lines above if "timer" is something you've made
stage.removeChild(star);
stage.removeEventListener(MouseEvent.MOUSE_MOVE, cursorMoveHandler);
my_timer.stop(); // you might need to cast this into Timer object
my_timer.removeEventListener(TimerEvent.TIMER, catchTimer);
Mouse.show();
gotoAndPlay(1, "Scene 2");
}
And the code for Scene 2 will consist of a single stop() - until you'll add something there. Also, there should be no event listeners, especially enter-frame, without a code to remove that listener! You add an enter-frame listener on Scene 2 and never remove it, while you need that code to only run once.
Use getChildAt.
function catchTimer(e:TimerEvent)
{
var childCount:int = this.numChildren - 1;
var i:int;
var tempObj:DisplayObject;
for (i = 0; i < childCount; i++)
{
tempObj = this.getChildAt(i);
this.removeChild(tempObj);
}
gotoAndPlay(1, "Scene 2");
}
This will remove all the children you added on scene 1 before going to scene 2.
I am making an interactive game - and I have this code so far. Where drop1 is a coin and the user drops it into target1 (box) and once they have done they they are able to watch the video play in the next scene. AS you can see when drop1 (coin) is dropped onto the box the coin then disappears
//Array to hold the target instances, the drop instances,
//and the start positions of the drop instances.
var hitArray:Array = new Array(hitTarget1);
var dropArray:Array = new Array(drop1);
var positionsArray:Array = new Array();
//This adds the mouse down and up listener to the drop instances
//and add the starting x and y positions of the drop instances
//into the array.
for (var i:int = 0; i < dropArray.length; i++) {
dropArray[i].buttonMode = true;
dropArray[i].addEventListener(MouseEvent.MOUSE_DOWN, mdown);
dropArray[i].addEventListener(MouseEvent.MOUSE_UP, mUp);
positionsArray.push({xPos:dropArray[i].x, yPos:dropArray[i].y});
}
//This drags the object that has been selected and moves it
//to the top of the display list. This means you can't drag
//this object underneath anything.
function mdown(e:MouseEvent):void {
e.currentTarget.startDrag();
setChildIndex(MovieClip(e.currentTarget), numChildren - 1);
}
//This stops the dragging of the selected object when the mouse is
//released. If the object is dropped on the corresponding target
//then it get set to the x and y position of the target. Otherwise
//it returns to the original position.
function mUp(e:MouseEvent):void {
var dropIndex:int = dropArray.indexOf(e.currentTarget);
var target:MovieClip = e.currentTarget as MovieClip;
target.stopDrag();
if (target.hitTestObject(hitArray[dropIndex])) {
target.x = hitArray[dropIndex].x;
target.y = hitArray[dropIndex].y;
drop1.visible = false;
}else{
target.x = positionsArray[dropIndex].xPos;
target.y = positionsArray[dropIndex].yPos;
}
}
NOW... I want the code to know when the user has dropped the coin in the box and IF the user has they can then watch the video but can only watch the video if they drop the coin in box. How can i code this?
please help.
thank you
If you're still struggling you can always try reading the MANUAL..? I suspect this is why you've had no answer so far. Travelling between frames/scenes requires either gotoAndPlay or gotoAndStop. Check: http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/display/MovieClip.html#gotoAndPlay()
Look at example two for scene jumping code. Where it says "intro" (frame label) it's okay to just use a number but scenes must have names.. e.g:
mc1.gotoAndPlay("intro", "Scene 12");
or in your case something like below (assuming you have named it as scene_video)
if (target.hitTestObject(hitArray[dropIndex])) {
target.x = hitArray[dropIndex].x;
target.y = hitArray[dropIndex].y;
drop1.visible = false;
gotoAndStop(1, "scene_video"); }
Again I'm assuming your video player is on frame 1 of that scene so stopping there allows users a chance to watch the video player.