//
//  cylinderBlock.js
//
//  Created by David Rowe on 25 Oct 2016.
//  Changes made by Thijs Wenker on 13 Feb 2017
//  Copyright 2016 High Fidelity, Inc.
//
//  Shoots blocks out of a cylinder
//
//  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 BLOCK_MODEL_URL = "http://hifi-content.s3.amazonaws.com/alan/dev/EZ-Block.fbx?5";
    var BLOCK_COMPOUND_SHAPE_URL = "http://hifi-content.s3.amazonaws.com/alan/dev/EZ-Block.obj";
    var BLOCK_DIMENSIONS = {
        x: 1.0072927474975586,
        y: 1.3508138656616211,
        z: 1.0093965530395508
    };
    var BLOCK_LIFETIME = 3600;  // 1 hour.

    var MAX_BLOCKS_PER_HOUR = 250;  // Note: Can't have many more than 50 because of entity editing MTU size limit.

    var MUZZLE_SOUND_URL = "http://hifi-content.s3.amazonaws.com/DomainContent/Welcome%20Area/Sounds/air_gun_1_converted.wav";
    var MUZZLE_SOUND_VOLUME = 0.5;
    var MUZZLE_SPEED = 25.0;  // m/s
    var MUZZLE_ANGLE = 5.0;  // Degrees off-center to discourage blocks falling back inside cylinder.
    var muzzleSound;

    var cylinderID;

    this.preload = function (entityID) {
        cylinderID = entityID;
        muzzleSound = SoundCache.getSound(MUZZLE_SOUND_URL);
    }

    this.launchBlock = function () {

        // Limit block creation rate.
        var userData = JSON.parse(Entities.getEntityProperties(cylinderID, "userData").userData);
        var blocksCreated = userData.hasOwnProperty("blocksCreated") ? userData.blocksCreated : [];
        var SECONDS_PER_HOUR = 3600;
        var now = Math.round(Date.now() / 1000);  // Seconds rather than milliseconds to reduce userData string length.
        var nowMinusOneHour = now - SECONDS_PER_HOUR;
        while (blocksCreated.length > 0 && blocksCreated[0] < nowMinusOneHour) {
            blocksCreated = blocksCreated.slice(1);
        }
        if (blocksCreated.length >= MAX_BLOCKS_PER_HOUR) {
            return;
        }

        // Create block.
        blocksCreated.push(now);
        userData.blocksCreated = blocksCreated;
        Entities.editEntity(cylinderID, {
            userData: JSON.stringify(userData)
        });

        var cylinder = Entities.getEntityProperties(cylinderID, ["position", "rotation", "dimensions"]);
        var muzzlePosition = Vec3.sum(cylinder.position,
            Vec3.multiplyQbyV(cylinder.rotation, { x: 0.0, y: 0.5 * cylinder.dimensions.y, Z: 0.0 }));
        var muzzleVelocity = Vec3.multiply(MUZZLE_SPEED, Vec3.UNIT_Y);
        muzzleVelocity = Vec3.multiplyQbyV(Quat.fromPitchYawRollDegrees(MUZZLE_ANGLE, 0.0, 0.0), muzzleVelocity);
        muzzleVelocity = Vec3.multiplyQbyV(Quat.fromPitchYawRollDegrees(0.0, Math.random() * 360.0, 0.0), muzzleVelocity);
        muzzleVelocity = Vec3.multiplyQbyV(cylinder.rotation, muzzleVelocity);

        Entities.addEntity({
            type: "Model",
            modelURL: BLOCK_MODEL_URL,
            shapeType: "compound",
            compoundShapeURL: BLOCK_COMPOUND_SHAPE_URL,
            dimensions: BLOCK_DIMENSIONS,
            dynamic: 1,
            gravity: { x: 0.0, y: -9.0, z: 0.0 },
            collisionsWillMove: 1,
            position: cylinder.position,
            rotation: Quat.multiply(cylinder.rotation, Quat.fromPitchYawRollDegrees(0.0, Math.random() * 360.0, 0.0)),
            velocity: muzzleVelocity,
            lifetime: BLOCK_LIFETIME
        });

        Audio.playSound(muzzleSound, {
            position: muzzlePosition,
            orientation: cylinder.rotation,
            volume: MUZZLE_SOUND_VOLUME
        });
    }

    this.clickDownOnEntity = function () {
        this.launchBlock();
    }
    
    this.startNearTrigger = function () {
        this.launchBlock();
    }

    this.startFarTrigger = function () {
        this.launchBlock();
    }
})