Type Coercion Failed in Action Script 3, getting element from an array

Question

I'm getting this error when I'm getting an element from an array and trying to use some functions on it:

TypeError: Error #1034: Type Coercion failed: cannot convert jogador$ to jogador. at laser/mover_tiro_baixo()

Sorry it's in portuguese, just like the code i'll paste below, but I think you get it: when I retrieve the element from an array it's of type 'jogador$', and if I try to use it as being of 'jogador' it doesn't work. I'm trying to manually force the coercion, as it was trying to convert the object to a DisplayObject (because I'm trying to use the hit test function), but that also didn't work:

TypeError: Error #1034: Type Coercion failed: cannot convert jogador$ to flash.display.DisplayObject. at laser/mover_tiro_baixo()

Code:

package {

    import flash.display.MovieClip;
    import flash.display.Stage;
    import flash.events.Event;
    import flash.debugger.enterDebugger;
    import flash.utils.getDefinitionByName;
    import flash.utils.getQualifiedClassName;
    import flash.display.DisplayObject;


    public class laser extends MovieClip {

        private var velo: Number;
        private var meuPalco: Stage;
        var dono: MovieClip;
        var inimigoTipo: Number;
        var Inimigos: Array;
        var Dano: Number;
        var Tam:Number;
        var i:Number;

        public function laser(palco: Stage, posX: Number, posY: Number, velocidade: Number, dano: Number, CimaBaixo: Number, Dono: MovieClip, vetJogadores: Array) {
            this.dono = Dono;
            this.Dano = dano;
            if (getClass(this.dono) == "jogador") {
                inimigoTipo = 0;
                Inimigos = jogador(this.dono).VetorInimigos;
            } else {
                inimigoTipo = 1;
                Inimigos = vetJogadores;
            }
            this.meuPalco = palco;
            this.velo = velocidade;
            this.x = posX;
            this.y = posY;
            if (CimaBaixo == 1) {
                this.addEventListener(Event.ENTER_FRAME, mover_tiro_cima);
            } else {
                this.addEventListener(Event.ENTER_FRAME, mover_tiro_baixo);
            }
            meuPalco.addChild(this);
        }


        public function mover_tiro_cima(evt: Event) {
            this.y -= velo;
            if (inimigoTipo == 0) { // Dono do tiro é o player          
                var Tam: Number = Inimigos.length;
                var i: Number = 0;
                while (i < Tam) {
                    if (this.hitTestObject(Inimigos[i])) {
                            inimigo(Inimigos[i]).vida.Diminuir(this.Dano);
                        }
                        i++;
                    }
                } else { // Dono do tiro é um inimigo
                    Tam = Inimigos.length;
                    i = 0;
                    while (i < Tam) {
                        if (this.hitTestObject(Inimigos[i])) {
                                jogador(Inimigos[i]).vida.Diminuir(this.Dano);
                            }
                            i++;
                        }
                    }
                    if (this.y <= 0) {
                        this.removeEventListener(Event.ENTER_FRAME, mover_tiro_cima);
                        meuPalco.removeChild(this);
                    }
                }

                public function mover_tiro_baixo(evt: Event) {
                    this.y += velo;
                    if (inimigoTipo == 0) { // Dono do tiro é o player          
                         Tam = Inimigos.length;
                         i = 0;
                        while (i < Tam) {
                            if (this.hitTestObject(Inimigos[i])) {
                                    inimigo(Inimigos[i]).vida.Diminuir(this.Dano);
                                }
                                i++;
                            }
                        } else { // Dono do tiro é um inimigo
                            Tam = Inimigos.length;
                            i = 0;
                            while (i < Tam) {
                                if (this.hitTestObject(Inimigos[i])) {
                                        jogador(Inimigos[i]).vida.Diminuir(this.Dano);
                                    }
                                    i++;
                                }
                            }
                            if (this.y <= 0) {
                                this.removeEventListener(Event.ENTER_FRAME, mover_tiro_baixo);
                                meuPalco.removeChild(this);
                            }
                        }

                        static function getClass(obj: Object): String {
                            return  String(Class(getDefinitionByName(getQualifiedClassName(obj))));
                        }
                    }

                }

The error happens everytime the laser tests to see if it's hitting an enemy (hittest) in its functions. mover_tiro_baixo() moves the shot down.

Thanks people!

Edit: The way I create the arrays:

var player1:jogador = new jogador(stage,350,700,10,3,1);
var Jogadores:Array = [jogador];
player1.setJogadores(Jogadores);

var inimigo1:et = new et(stage,100,200,Jogadores);
var inimigo2:et = new et(stage,200,100,Jogadores);
var inimigo3:et = new et(stage,350,450,Jogadores);

var todosInimigos:Array = [inimigo1,inimigo2,inimigo3];
player1.DefinirInimigos(todosInimigos);

Gigggas Gigggas · Accepted Answer · 2014-06-02T02:19:58

I've checked some other stack overflow questions that have similar type conversion errors. Most of the other people with a similar problem were actually filling their array with a Class, rather than objects that were instances of a Class. Are you filling those arrays like this?

for(var i:int = 0; i < 10; i++){
     Inimigos.push(jogador); //incorrect
}

If so, that is the reason the problem is happening. This is the correct way to do it:

for(var i:int = 0; i < 10; i++){
     Inimigos.push(new jogador()); //correct
}

EDIT:

In the new code you added to the first post, this line seems to be the problem:

var Jogadores:Array = [jogador]; //jogador is a class

Flash Actionscript Arrays cannot be "initialized" to only be able to contain a specific type of object. Actionscript Vectors are capable of that, but not Arrays. That line posted above initializes an array in which the first element is a class, not an object.

Type Coercion Failed in Action Script 3, getting element from an array

1 Answers