var _vec2_tmp = new Float32Array(2);
var _vec3_tmp = new Float32Array(3);

function update_anchor_pos(anchor_id, obj_name, anchor_offset) {
    var obj = m_scenes.get_object_by_name(obj_name);
    var pos = m_trans.get_translation(obj, _vec3_tmp);
    m_vec3.add(pos, anchor_offset, pos);

    var cam = m_scenes.get_active_camera();
    var canvas_xy = m_cam.project_point(cam, pos, _vec2_tmp);

    var anchor_el = document.getElementById(anchor_id);
    anchor_el.style.left = canvas_xy[0] + "px";
    anchor_el.style.top = canvas_xy[1] + "px";
}

var anchor_offset = new Float32Array([2,2,2]);
update_anchor_pos("box", "box_1", anchor_offset);

var x = m_mouse.get_coords_x(e);
var y = m_mouse.get_coords_y(e);

var x = m_mouse.get_coords_x(e, false, true);
var y = m_mouse.get_coords_y(e, false, true);

function preloader_cb(percentage) {
    m_preloader.update_preloader(percentage);
}

var _preload_data = {};
var JSON_COUNT = 4; 
function upd_preloader_data(percentage, data_id) {
    if (!(data_id in _preload_data))
        _preload_data[data_id] = 0;

    _preload_data[data_id] = percentage;
}

function get_preloader_value() {
    var value = 0;
    for (var id in _preload_data)
        value += _preload_data[id];

    return m_util.trunc(value/JSON_COUNT);
}

/**
 * update the app's preloader
 */
function preloader_cb(percentage, load_time, data_id) {
    upd_preloader_data(percentage, data_id);
    m_preloader.update_preloader(get_preloader_value());
}

var m_cont = require("container");
var m_input = require("input");
var m_mouse = require("mouse");
var m_scenes = require("scenes");
var m_sfx = require("sfx");

var _prev_played_speaker = null;

function setup_speaker_logic() {
    var canvas_elem = m_cont.get_canvas();
    m_input.add_click_listener(canvas_elem, function(event) {
        
        var x = m_mouse.get_coords_x(event);
        var y = m_mouse.get_coords_y(event);
        var obj = m_scenes.pick_object(x, y);

        if (obj) {
            var obj_name = m_scenes.get_object_name(obj);

            if (_prev_played_speaker && m_sfx.is_playing(_prev_played_speaker))
                m_sfx.stop(_prev_played_speaker);

            var speaker_obj = m_scenes.get_object_by_name(obj_name + ".Speaker");
            m_sfx.play(speaker_obj);
            _prev_played_speaker = speaker_obj;
        }
    });
}