the ai is more complete but now this cod does not work - Chase.prototype.setAnimation = function (state) {
if (this.state !== state)
var states = Chase.states;
this.state = state;
// Set the current animation, taking 0.2 seconds to blend from
// the current animation state to the start of the target animation.
this.entity.findByName("model").animation.play(states[state].animation, 0.2);
};