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Player health bar problem


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I have a healthBar entity given by the code below which is in a separate file called health_bar_entity.js(melonjs code base)

game.HealthBar = me.Renderable.extend(
    init: function(hitPoints, maxHitPoints)
        this._super(me.Renderable, "init", [0, -24, 48, 6]);
        this.z = 100;
        this.hitPoints = hitPoints;
        this.maxHitPoints = maxHitPoints;
        this.health = 1;
        this.currentHealth = 1;
        this.borderColor = '#000';
        this.alwaysUpdate = false;
    draw : function(renderer) 
           renderer.fillRect(this.pos.x, this.pos.y, this.width, this.height);
           renderer.fillRect(this.pos.x+1, this.pos.y+1, this.width-2, this.height-2);
              renderer.fillRect(this.pos.x+1, this.pos.y+1, this.width-2, this.height-2);
              renderer.fillRect(this.pos.x+1, this.pos.y+1, (this.width-2)*this.health, this.height-2);
    update : function() 
           this.updateOnce = false;
           return true;
           return false;
       this.health = this.currentHealth;
           return true;
    setHealth: function(hitPoints)
       this.currentHealth = hitPoints/this.maxHitPoints;
    setCurrentAnimation: function()
    //do nothing
    setAnimationFrame: function(blarg)
    //do nothing

and I want to add this to the player entity, but when I try to add to the player by using the code below, this is in the file game_player_entity.js(melonjs code base)

    this.player_health = 50;
    this.player_max_health = 100;
    this.healthBar = me.pool.pull("playerHealthbar", this.player_health, 
    console.log('health bar' + this.healthBar);

this.addChild(this.healthbar, 9);

it give me an error don't know whats going wrong have looked at the api and it seems that it should work


Edited by soulVampire
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