update: function() {
                    // This method is called for every frame on each entity.
                    // React to input, or compute the entity's AI here.


                    moving = 0;

                    // si up ou down ET rien d'autre on stocke la valeur.
                    // objectif : garder l'animation précédente pour qu'en diagonale, le personnage ne soit pas toujours à droite ou à gauche en animation s'il a commencé par haut ou bas
                    if ((ig.input.state('up') || ig.input.state('down')) && !ig.input.state('left') && !ig.input.state('right')) {
                        this.lastInput = ig.input.state('down') ? 'down' : 'up';
                    }

                    if ((ig.input.state('left') || ig.input.state('right')) && !ig.input.state('up') && !ig.input.state('down'))
                        this.lastInput = ig.input.state('left') ? 'left' : 'right';


                    // si haut + bas ou droite + gauche : stop animation.
                    if (ig.input.state('up') && ig.input.state('down')) {
                        moving = 0;
                        this.vel.y = 0;
                    }
                    if (ig.input.state('left') && ig.input.state('right')) {
                        moving = 0;
                        this.vel.x = 0;
                    }

                    // gestion des cas d'input
                    if (ig.input.state('up') && !ig.input.state('down')) {
                        moving = 1;
                        this.vel.y = -100;
                        this.currentAnim = this.anims.up;
                    }
                    if (ig.input.state('down') && !ig.input.state('up')) {
                        moving = 1;
                        this.vel.y = 100;
                        this.currentAnim = this.anims.down;
                    }
                    if (ig.input.state('left') && !ig.input.state('right')) {
                        moving = 1;
                        this.vel.x = -100;
                        // conservation de la dernière direction
                        if (this.lastInput != 'left' && this.lastInput != 'right' && (ig.input.state('up') || ig.input.state('down')))
                            if (ig.input.state('up'))
                                this.currentAnim = this.anims.up;
                            else
                                this.currentAnim = this.anims.down;
                        else
                            this.currentAnim = this.anims.right;
                    }
                    if (ig.input.state('right') && !ig.input.state('left')) {
                        moving = 1;
                        this.vel.x = 100;
                        // conservation de la dernière direction
                        if (this.lastInput != 'left' && this.lastInput != 'right' && (ig.input.state('up') || ig.input.state('down')))
                            if (ig.input.state('up'))
                                this.currentAnim = this.anims.up;
                            else
                                this.currentAnim = this.anims.down;
                        else
                            this.currentAnim = this.anims.right;
                    }

                    if (!ig.input.state('left') && !ig.input.state('right'))
                        this.vel.x = 0;

                    if (!ig.input.state('up') && !ig.input.state('down'))
                        this.vel.y = 0;

                    // trouvé ici : http://gmc.yoyogames.com/index.php?showtopic=547900
                    // calcul de la vitesse en diagonale
                    if (this.vel.x != 0 && this.vel.y != 0)
                    {
                        this.vel.x = this.vel.x / Math.sqrt(2);
                        this.vel.y = this.vel.y / Math.sqrt(2);
                    }

                    // si on bouge pas, on conserve la dernière direction regardée par le personnage
                    if (!moving) {
                        switch (this.lastInput) {
                            case 'left':
                            case 'right':
                                this.currentAnim = this.anims.idleRight;
                                break;
                            case 'up':
                                this.currentAnim = this.anims.idleUp;
                                break;
                            default:
                                this.currentAnim = this.anims.idleDown;
                                break;
                        }
                    }

                    // animation de gauche = flip(animation de droite)
                    if (this.vel.x < 0 || (!moving && this.lastInput == 'left'))
                        this.currentAnim.flip.x = true;
                    else
                        this.currentAnim.flip.x = false;



                    //network
                    if (ig.input.state('up')) {
                        this.padmap["up"] = 1;
                    } else {
                        this.padmap["up"] = 0;
                    }

                    if (ig.input.state('down')) {
                        this.padmap["down"] = 1;
                    } else {
                        this.padmap["down"] = 0;
                    }

                    if (ig.input.state('left')) {
                        this.padmap["left"] = 1;
                    } else {
                        this.padmap["left"] = 0;
                    }

                    if (ig.input.state('right')) {
                        this.padmap["right"] = 1;
                    } else {
                        this.padmap["right"] = 0;
                    }



                    this.nettimer--;

                    //console.log(this.id);
                    if (this.nettimer == 0) {

                        sock.emit('update', this.padmap, this.id);
                        this.nettimer = 20;
                    }

                    // Call the parent update() method to move the entity
                    // according to its physics
                    this.parent();
                }
            });