//
//  boom.js 
// 
//  An object with this entity script will, when grabbed, apply physical forces to any nearby objects
//
//  Created by Philip Rosedale on March 7, 2016
//  Copyright 2016 High Fidelity, Inc.
//  
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//

(function() {
    var entityID,
        wantDebug = true,
        BLAST_FORCE = 10,
        BLAST_RADIUS = 15,
        BLAST_STEPDOWN = 2.0,
        TIME_TILL_RESTORE = 5.0,
        readyToExplode = true,
        SOUNDBOOM = SoundCache.getSound("http://hifi-content.s3.amazonaws.com/alan/dev/Audio/bigboom_converted.wav"),
        RED = { red:255, green: 0, blue: 0 },
        affected = []

    function printDebug(message) {
        if (wantDebug) {
            print(message);
        }
    }

    function blowStuffUp(position, force) {
	    var stuff = Entities.findEntities(position, BLAST_RADIUS);
	    for (var i = 0; i < stuff.length; i++) {
	        var properties = Entities.getEntityProperties(stuff[i]);
	        if (!properties.locked && (stuff[i] != entityID)) {
	        	//  Store original position
	        	affected.push({ entityID: stuff[i], 
	        					position: properties.position, 
	        					rotation: properties.rotation,
	        					gravity: properties.gravity,
	        					dynamic: properties.dynamic });
	        	//Vec3.print("pos = ", affected[affected.length - 1].position);
	            var diff = Vec3.subtract(properties.position, position);
	            var distance = Vec3.length(diff);
	            var velocity = Vec3.sum(properties.velocity, Vec3.multiply(force, Vec3.normalize(diff)));
	            var angularVelocity = { x: Math.random() * force, y: Math.random() * force, z: Math.random() * force };
	            Entities.editEntity(stuff[i], { velocity: velocity, 
                                                dynamic: true,
                                                gravity: { x: 0, y: -9, y: 0 },
	                                            angularVelocity: angularVelocity });
	        }
	    }
    }

    function replaceStuff() {
    	for (var i = 0; i < affected.length; i++) {
    		Entities.editEntity(affected[i].entityID, { position: affected[i].position, 
    													rotation: affected[i].rotation, 
    													gravity: affected[i].gravity,
    													dynamic: affected[i].dynamic,
    													velocity: { x: 0, y: 0, z: 0 },
    													angularVelocity: { x: 0, y: 0, z: 0 } });
    	}
    	affected = [];
        readyToExplode = true;
    }

    this.mousePressOnEntity = function() {
        if (!readyToExplode) {
            return;
        }
    	printDebug("Boom!");
    	var properties = Entities.getEntityProperties(entityID);
    	Entities.editEntity(entityID, { color: RED });
        Audio.playSound(SOUNDBOOM, {
                        position: properties.position,
                        volume: 1.0,
                        loop: false});
        blowStuffUp(Vec3.sum(properties.position, { x: 0, y: -BLAST_STEPDOWN, z: 0 }), BLAST_FORCE)
        Script.setTimeout(replaceStuff, TIME_TILL_RESTORE * 1000);
    }

    this.preload = function(givenEntityID) {
        printDebug("load boom...");
        entityID = givenEntityID;
    };

    this.unload = function() {
        printDebug("Unload boom...");
    };

});