5006: An ActionScript file can not have more than one externally visible definition: AND TypeError: Error #1006: hitTestObject is not a function - actionscript-3

Question

I have 2 issues in this code.
The first is:
5006: An ActionScript file can not have more than one externally visible definition: Sprayer, bugs
I've put multiple Actionscripts together to create this, i've seperated out the classes and am hoping to play this on a frame from a symbol.
and the second relates to:
Error #1006: hitTestObject is not a function
For this i'm trying to get the aagun/Sprayer to lose health then lives if the bugs touch it, but i'm not sure why it's saying it's not a function. Am I using the wrong words?
Thanks for your help, here's the code
package Shooter{
import flash.display.*;
import flash.events.*;
import flash.utils.getTimer;
class Sprayer extends MovieClip{
const speed:Number = 150.0;
var lastTime:int; // animation time
function Sprayer() {
// initial location of gun
this.x = 275;
this.y = 340;
// movement
addEventListener(Event.ENTER_FRAME,moveGun);
}
function moveGun(event:Event) {
// get time difference
var timePassed:int = getTimer()-lastTime;
lastTime += timePassed;
// current position
var newx = this.x;
// move to the left
if (MovieClip(parent).leftArrow) {
newx -= speed*timePassed/1000;
}
// move to the right
if (MovieClip(parent).rightArrow) {
newx += speed*timePassed/1000;
}
// check boundaries
if (newx < 10) newx = 10;
if (newx > 540) newx = 540;
// reposition
this.x = newx;
}
// remove from screen and remove events
function deleteGun() {
parent.removeChild(this);
removeEventListener(Event.ENTER_FRAME,moveGun);
}
}
}
package BigBug{
import flash.display.*;
import flash.events.*;
import flash.utils.Timer;
import flash.text.TextField;
import flash.display.MovieClip;
class bugs extends MovieClip {
var dx:Number; // speed and direction
var lastTime:int; // animation time
function bugs(side:String, speed:Number, altitude:Number) {
if (side == "left") {
this.x = -50; // start to the left
dx = speed; // fly left to right
this.scaleX = 1; // reverse
} else if (side == "right") {
this.x = -50; // start to the right
dx = -speed; // fly right to left
this.scaleX = 1; // not reverse
}
this.y = altitude; // vertical position
// choose a random plane
this.gotoAndStop(Math.floor(Math.random()*4+1));
// set up animation
addEventListener(Event.ENTER_FRAME,movePlane);
lastTime = getTimer();
}
function movePlane(event:Event) {
// get time passed
var timePassed:int = getTimer()-lastTime;
lastTime += timePassed;
// move plane
this.x += dx*timePassed/2000;
// check to see if off screen
if ((dx < 0) && (x < -50)) {
deletePlane();
} else if ((dx > 0) && (x > 350)) {
deletePlane();
}
}
}
}
package Missiles{
import flash.display.*;
import flash.events.*;
import flash.utils.Timer;
import flash.text.TextField;
import flash.display.MovieClip;
class Bullets extends MovieClip {
var dx:Number; // vertical speed
var lastTime:int;
function Bullets(x,y:Number, speed: Number) {
// set start position
this.x = x;
this.y = y;
// get speed
dx = speed;
// set up animation
lastTime = getTimer();
addEventListener(Event.ENTER_FRAME,moveBullet);
}
function moveBullet(event:Event) {
// get time passed
var timePassed:int = getTimer()-lastTime;
lastTime += timePassed;
// move bullet
this.x += dx*timePassed/1000;
// bullet past top of screen
if (this.x < 0) {
deleteBullet();
}
}
// delete bullet from stage and plane list
function deleteBullet() {
MovieClip(parent).removeBullet(this);
parent.removeChild(this);
removeEventListener(Event.ENTER_FRAME,moveBullet);
}
}
}
package MainGame{
import flash.display.*;
import flash.events.*;
import flash.utils.Timer;
import flash.text.TextField;
import flash.display.MovieClip;
import Missiles.Bullets;
import Shooter.Sprayer;
import BigBug.bugs;
public class AirRaid extends MovieClip {
private var aagun:Sprayer;
private var airplanes:Array;
private var buggood:Array;
private var bullets:Array;
public var leftArrow, rightArrow:Boolean;
private var nextGbug:Timer;
private var nextPlane:Timer;
private var shotsLeft:int;
private var shotsHit:int;
public function startAirRaid() {
// init score
shotsLeft = 20;
shotsHit = 0;
showGameScore();
// create gun
aagun = new Sprayer();
addChild(aagun);
// create object arrays
buggood = new Array();
airplanes = new Array();
bullets = new Array();
// listen for keyboard
stage.addEventListener(KeyboardEvent.KEY_DOWN,keyDownFunction);
stage.addEventListener(KeyboardEvent.KEY_UP,keyUpFunction);
// look for collisions
addEventListener(Event.ENTER_FRAME,checkForHits);
// start planes flying
setNextPlane();
setNextGbug();
}
public function setNextPlane() {
nextPlane = new Timer(1000+Math.random()*1000,1);
nextPlane.addEventListener(TimerEvent.TIMER_COMPLETE,newPlane);
nextPlane.start();
}
public function newPlane(event:TimerEvent) {
// random side, speed and altitude
if (Math.random() > .5) {
var side:String = "left";
} else {
side = "right";
}
var altitude:Number = Math.random()*50+20;
var speed:Number = Math.random()*150+150;
// create plane
var p:bugs = new bugs(side,speed,altitude);
addChild(p);
airplanes.push(p);
// set time for next plane
setNextPlane();
}
public function setNextGbug() {
nextGbug = new Timer(1000+Math.random()*1000,1);
nextGbug.addEventListener(TimerEvent.TIMER_COMPLETE,newGbug);
nextGbug.start();
}
public function newGbug(event:TimerEvent) {
// random side, speed and altitude
if (Math.random() > .5) {
var side:String = "left";
} else {
side = "right";
}
var altitude:Number = Math.random()*50+20;
var speed:Number = Math.random()*150+150;
// create Gbug
var p:Good_bug = new Good_bug(side,speed,altitude);
addChild(p);
buggood.push(p);
// set time for next Gbug
setNextGbug();
}
// check for collisions
public function checkForHits(event:Event) {
for(var bulletNum:int=bullets.length-1;bulletNum>=0;bulletNum--){
for (var airplaneNum:int=airplanes.length-1;airplaneNum>=0;airplaneNum--) {
if (bullets[bulletNum].hitTestObject(airplanes[airplaneNum])) {
airplanes[airplaneNum].planeHit();
bullets[bulletNum].deleteBullet();
shotsHit++;
showGameScore();
break;
}
}
for(var bulletNum:int=bullets.length-1;bulletNum>=0;bulletNum--){
for (var Good_bugNum:int=buggood.length-1;Good_bugNum>=0;Good_bugNum--) {
if (bullets[bulletNum].hitTestObject(buggood[Good_bugNum])) {
buggood[Good_bugNum].GbugHit();
bullets[bulletNum].deleteBullet();
shotsHit--;
showGameScore();
break;
}
}
}
if ((shotsLeft == 0) && (bullets.length == 0)) {
endGame();
}
}
if ((shotsLeft == 0) && (bullets.length == 0)) {
endGame();
}
}
// key pressed
public function keyDownFunction(event:KeyboardEvent) {
if (event.keyCode == 37) {
leftArrow = true;
} else if (event.keyCode == 39) {
rightArrow = true;
} else if (event.keyCode == 32) {
fireBullet();
}
}
// key lifted
public function keyUpFunction(event:KeyboardEvent) {
if (event.keyCode == 37) {
leftArrow = false;
} else if (event.keyCode == 39) {
rightArrow = false;
}
}
// new bullet created
public function fireBullet() {
if (shotsLeft <= 0) return;
var b:Bullets = new Bullets(aagun.x,aagun.y,-300);
addChild(b);
bullets.push(b);
shotsLeft--;
showGameScore();
}
public function showGameScore() {
showScore.text = String("Score: "+shotsHit);
showShots.text = String("Shots Left: "+shotsLeft);
}
// take a plane from the array
public function removePlane(plane:bugs) {
for(var i in airplanes) {
if (airplanes[i] == plane) {
airplanes.splice(i,1);
break;
}
}
}
// take a Gbug from the array
public function removeGbug(Gbug:Good_bug) {
for(var i in buggood) {
if (buggood[i] == Gbug) {
buggood.splice(i,1);
break;
}
}
}
// take a bullet from the array
public function removeBullet(bullet:Bullets) {
for(var i in bullets) {
if (bullets[i] == bullet) {
bullets.splice(i,1);
break;
}
}
}
// game is over, clear movie clips
public function endGame() {
// remove planes
for(var i:int=airplanes.length-1;i>=0;i--) {
airplanes[i].deletePlane();
}
for(var i:int=buggood.length-1;i>=0;i--) {
buggood[i].deleteGbug();
}
airplanes = null;
buggood = null;
aagun.deleteGun();
aagun = null;
stage.removeEventListener(KeyboardEvent.KEY_DOWN,keyDownFunction);
stage.removeEventListener(KeyboardEvent.KEY_UP,keyUpFunction);
removeEventListener(Event.ENTER_FRAME,checkForHits);
nextPlane.stop();
nextPlane = null;
nextGbug.stop();
nextGbug = null;
gotoAndStop("gameover");
}
}
}

Answer 1

1.
5006: An ActionScript file can not have more than one externally visible definition: Sprayer, bugs
As it says exactly: you can't have more than one public definition in a file. You have to either split the code to several files or move definitions, that you don't need public, out of the package.
This would be Ok in one file:
package
{
import flash.display.MovieClip;
// public is the default access modifier
public class Test1 extends MovieClip
{
public function Test1()
{
trace("test1");
var t2:Test2 = new Test2();
var t3:Test3 = new Test3();
}
}
}
// Test2 and Test3 are defined outside of the package, otherwise it wouldn't compile.
// These definitions will only be visible to code in this file.
import flash.display.MovieClip;
class Test2 extends MovieClip
{
public function Test2()
{
trace("test2");
}
}
class Test3 extends MovieClip
{
public function Test3()
{
trace("test3");
}
}
2.
Error #1006: hitTestObject is not a function
This usually means that hitTestObject() is not defined on the object (or it's ancestors) you are trying to call it from (although there could be different kinds of errors for that).
hitTestObject() is accessed in two ways in your code: airplanes.hitTestObject() and bullets[bulletNum].hitTestObject(). You will have to debug your code to see what is actually airplanes and bullets[bulletNum], what types they are and whether they inherit hitTestObject() method. You could at least trace() them.