// soccerGoal.js
// 
// Created for HiFi Hackathon on 10/26/2018
//
// When the soccer ball enters a zone that is parented to the goal, it lights up the scoreboard,
// adds a sound effect and changes the score

(function() {
    var OUT_OF_BOUNDS_SOUND = SoundCache.getSound(Script.resolvePath('assets/sounds/out.wav'));
    var SEARCH_RADIUS = 200;
    var LOOK_FOR_BALL_AGAIN = 1000;
    var GOAL_CHECKING_INTERVAL = 100;

    var _this;
    var audioVolume = 0.4;
    var injector;
    var scoreBoardPosition;
    var goalNet;
    var field;
    var fieldCenterPosition;
    var checkingInterval;
    var ball;
    var out = false;

    var Goal = function() {
        _this = this;
    };

    Goal.prototype = {
        interval: null,
        angularVelocityLimit: 10,
        nameText: null,

        remotelyCallable: ['reset'],
        
        preload: function(entityID) {
            _this.entityID = entityID;
            goalNet = Entities.getEntityProperties(_this.entityID, 'parentID').parentID;
            field = Entities.getEntityProperties(goalNet, 'parentID').parentID;
            Entities.getChildrenIDs(field).forEach(function(childOfField) {
                var name = Entities.getEntityProperties(childOfField, 'name').name;
                if (name === "Soccer Middle Field Line") {
                    // print("FOUND CENTER FIELD MARKER");
                    fieldCenterPosition = Entities.getEntityProperties(childOfField, 'position').position;
                    fieldCenterPosition.y += 0.18;
                }
            });
            checkingInterval = Script.setInterval(function() {
                if (!ball) {
                    _this.findBall();
                } else {
                    Script.clearInterval(checkingInterval);
                    _this.beginCheckingForOuts();
                }
            }, LOOK_FOR_BALL_AGAIN);
        },

        beginCheckingForOuts: function() {
            checkingInterval = Script.setInterval(function() {
                if (!_this.isBallInsideZone() && !out) {
                    out = true;
                    Entities.editEntity(ball, {
                        velocity: {x:0, y:0, z: 0}
                    });
                    // print("OUT OF BOUNDS...wait to resume game");
                    _this.playSound(OUT_OF_BOUNDS_SOUND, 1, 0);
                } else if (_this.isBallInsideZone() && out) {
                    // print("BALL IS BACK AFTER OUT...GAME ON");
                    out = false;
                }
            }, GOAL_CHECKING_INTERVAL);
        },

        findBall: function() {
            Entities.findEntities(scoreBoardPosition, SEARCH_RADIUS).forEach(function(entityWithin200MofScoreboard) {
                var name = Entities.getEntityProperties(entityWithin200MofScoreboard, 'name').name;
                if (name === "Soccer Ball") {
                    ball = entityWithin200MofScoreboard;
                }
            });
        },

        isBallInsideZone: function() {
            // print("CHECKING IF THE BALL IS IN THE GOAL");
            var ballPosition = Entities.getEntityProperties(ball, 'position').position;
            var zoneProperties = Entities.getEntityProperties(_this.entityID, ["position", "dimensions", "rotation"]);
            var localPosition = Vec3.multiplyQbyV(Quat.inverse(zoneProperties.rotation),
                Vec3.subtract(ballPosition, zoneProperties.position));
            var halfDimensions = Vec3.multiply(zoneProperties.dimensions, 0.5);
            return -halfDimensions.x <= localPosition.x &&
                halfDimensions.x >= localPosition.x &&
                -halfDimensions.y <= localPosition.y &&
                halfDimensions.y >= localPosition.y &&
                -halfDimensions.z <= localPosition.z &&
                halfDimensions.z >= localPosition.z;
        },

        playSound: function(sound, volume, localOnly) {
            // print("sound");
            if (sound.downloaded) {
                if (injector) {
                    injector.stop();
                }
                injector = Audio.playSound(sound, {
                    position: scoreBoardPosition,
                    volume: audioVolume
                });
            }
        },

        unload: function(entityID) {
            if (checkingInterval) {
                Script.clearInterval(checkingInterval);
            }
        }
    };
    
    return new Goal();
});