enemy.js

ig.module(
    'game.entities.enemy'
)
.requires(
    'impact.entity'
)
.defines(function () {
    EntityEnemy = ig.Entity.extend({
        collides: ig.Entity.COLLIDES.PASSIVE,

        size: {x: 8, y: 12},

        maxVel: {x: 30, y: 400},
        friction: {x: 300, y: 0},

        animSheet: new ig.AnimationSheet('media/gunter.png', 8, 12),

        init: function (x, y, settings) {
            this.parent(x, y, settings);
            this.addAnim('idle', 1, [0]);
            this.addAnim('walking', 0.4, [0, 1]);
        },

        flipped: false,
        update: function () {
            this.currentAnim.flip.x = this.flipped;

            // Set current anim based on velocity
            if (this.vel.x < 0) {
                this.currentAnim = this.anims.walking;
                this.flipped = false;
            } else if (this.vel.x > 0) {
                this.currentAnim = this.anims.walking;
                this.flipped = true;
            } else {
                this.currentAnim = this.anims.idle;
            }

            // Move towards player
            var player = ig.game.getEntitiesByType('EntityPlayer')[0];
            if (player) {
                if (this.pos.x > player.pos.x) {
                    this.accel.x = -40;
                } else if (this.pos.x < player.pos.x) {
                    this.accel.x = 40;
                }
            }

            this.parent();
        }
    });
});