A new lesson on object transformation programming

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"use strict"

b4w.register("gravity_simulation", function(exports, require) {

var m_app = require("app");
var m_data = require("data");
var m_scs = require("scenes");
var m_obj = require("objects");
var m_trans = require("transform");
var m_phy = require("physics");
var m_ctl = require("controls");
var m_cfg = require("config");
var m_version = require("version");

var DEBUG = (m_version.type() === "DEBUG");

var obj;
var yellowplanet;
var blueplanet;
var elapsed_sensor;


exports.init = function() {
m_app.init({
canvas_container_id: "canvas_cont",
callback: init_cb,
physics_enabled: true,
show_fps: true,
alpha: false,
autoresize: true,
assets_dds_available: !DEBUG,
assets_min50_available: !DEBUG,
console_verbose: true
});
}

function init_cb(canvas_elem, success) {

if (!success) {
console.log("b4w init failure");
return;
}
load();
}

function load() {
m_data.load("gravity_simulation.json", load_cb);

}

var speed = 1;

function main_cb (obj, id) {
var elapsed = m_ctl.get_sensor_value(obj, id, 0); 
//m_trans.set_translation(planet,2, 0, 0);
m_phy.apply_force(blueplanet,0,0,9.81,true) 
m_trans.move_local(yellowplanet, speed*elapsed, 0, 0);	
}

function load_cb(data_id) {
m_app.enable_camera_controls();
elapsed_sensor = m_ctl.create_elapsed_sensor();
m_ctl.create_sensor_manifold(null, "MAIN", m_ctl.CT_CONTINUOUS, [elapsed_sensor], null, main_cb);
yellowplanet = m_scs.get_object_by_name("Yellow");
blueplanet = m_scs.get_object_by_name("Blue");
//m_phy.apply_force_world(obj, 5, -1, 0)
//m_phy.apply_force(src_obj,0,9.8,9.8,false)
//m_trans.set_translation(obj,5, 0, 0);
}

//var loop = function () {
//	requestAnimationFrame(loop);
//m_trans.set_translation(obj,2, 0, 0);
//m_phy.apply_force(src_obj,10,0,0,false)
//};

//	requestAnimationFrame(loop);


});

b4w.require("gravity_simulation").init();
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