//
//  hmdControls.js
//  examples
//
//  Created by Sam Gondelman on 6/17/15
//  Copyright 2015 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
//

var MOVE_DISTANCE = 0.3;
var PITCH_INCREMENT = 0.5; // degrees
var VR_PITCH_INCREMENT = 15.0; // degrees
var YAW_INCREMENT = 0.5; // degrees
var VR_YAW_INCREMENT = 15.0; // degrees
var BOOM_SPEED = 0.5;
var THRESHOLD = 0.2;

var CAMERA_UPDATE_TIME = 0.5;
var pitchTimer = CAMERA_UPDATE_TIME;
var yawTimer = CAMERA_UPDATE_TIME;

var shifted = false;
var SHIFT_UPDATE_TIME = 0.5;
var shiftTimer = SHIFT_UPDATE_TIME;
var SHIFT_MAG = 4.0;

var hmdControls = (function () {

	function onActionEvent(action, state) {
        if (state < THRESHOLD) {
            if (action == 6 || action == 7) {
                yawTimer = CAMERA_UPDATE_TIME;
            } else if (action == 8 || action == 9) {
                pitchTimer = CAMERA_UPDATE_TIME;
            }
            return;
        }
        switch (action) {
            case 0: // backward
                var direction = Quat.getFront(Camera.getOrientation());
                direction = Vec3.multiply(-1, direction);
                direction = Vec3.multiply(Vec3.normalize(direction), shifted ? SHIFT_MAG * MOVE_DISTANCE : MOVE_DISTANCE);
                MyAvatar.position = Vec3.sum(MyAvatar.position, direction);
                break;
            case 1: // forward
                var direction = Quat.getFront(Camera.getOrientation());
                direction = Vec3.multiply(Vec3.normalize(direction), shifted ? SHIFT_MAG * MOVE_DISTANCE : MOVE_DISTANCE);
                MyAvatar.position = Vec3.sum(MyAvatar.position, direction);
                break;
            case 2: // left
                var direction = Quat.getRight(Camera.getOrientation());
                direction = Vec3.multiply(-1, direction);
                direction = Vec3.multiply(Vec3.normalize(direction), shifted ? SHIFT_MAG * MOVE_DISTANCE : MOVE_DISTANCE);
                MyAvatar.position = Vec3.sum(MyAvatar.position, direction);
                break;
            case 3: // right
                var direction = Quat.getRight(Camera.getOrientation());
                direction = Vec3.multiply(Vec3.normalize(direction), shifted ? SHIFT_MAG * MOVE_DISTANCE : MOVE_DISTANCE);
                MyAvatar.position = Vec3.sum(MyAvatar.position, direction);
                break;
            case 4: // down
                var direction = Quat.getUp(Camera.getOrientation());
                direction = Vec3.multiply(-1, direction);
                direction = Vec3.multiply(Vec3.normalize(direction), shifted ? SHIFT_MAG * MOVE_DISTANCE : MOVE_DISTANCE);
                MyAvatar.position = Vec3.sum(MyAvatar.position, direction);
                break;
            case 5: // up
                var direction = Quat.getUp(Camera.getOrientation());
                direction = Vec3.multiply(Vec3.normalize(direction), shifted ? SHIFT_MAG * MOVE_DISTANCE : MOVE_DISTANCE);
                MyAvatar.position = Vec3.sum(MyAvatar.position, direction);
                break;
            case 6: // yaw left
                if (yawTimer < 0.0 && Menu.isOptionChecked("Enable VR Mode")) {
                    MyAvatar.bodyYaw = MyAvatar.bodyYaw + (shifted ? SHIFT_MAG * VR_YAW_INCREMENT : VR_YAW_INCREMENT);
                    yawTimer = CAMERA_UPDATE_TIME;
                } else if (!Menu.isOptionChecked("Enable VR Mode")) {
                    MyAvatar.bodyYaw = MyAvatar.bodyYaw + (shifted ? SHIFT_MAG * YAW_INCREMENT : YAW_INCREMENT);
                }
                break;
            case 7: // yaw right
                if (yawTimer < 0.0 && Menu.isOptionChecked("Enable VR Mode")) {
                    MyAvatar.bodyYaw = MyAvatar.bodyYaw - (shifted ? SHIFT_MAG * VR_YAW_INCREMENT : VR_YAW_INCREMENT);
                    yawTimer = CAMERA_UPDATE_TIME;
                } else if (!Menu.isOptionChecked("Enable VR Mode")) {
                    MyAvatar.bodyYaw = MyAvatar.bodyYaw - (shifted ? SHIFT_MAG * YAW_INCREMENT : YAW_INCREMENT);
                }
                break;
            case 8: // pitch down
                if (pitchTimer < 0.0 && Menu.isOptionChecked("Enable VR Mode")) {
                    MyAvatar.headPitch = Math.max(-180, Math.min(180, MyAvatar.headPitch - (shifted ? SHIFT_MAG * VR_PITCH_INCREMENT : VR_PITCH_INCREMENT)));
                    pitchTimer = CAMERA_UPDATE_TIME;
                } else if (!Menu.isOptionChecked("Enable VR Mode")) {
                    MyAvatar.headPitch = Math.max(-180, Math.min(180, MyAvatar.headPitch - (shifted ? SHIFT_MAG * PITCH_INCREMENT : PITCH_INCREMENT)));
                }
                break;
            case 9: // pitch up
                if (pitchTimer < 0.0 && Menu.isOptionChecked("Enable VR Mode")) {
                    MyAvatar.headPitch = Math.max(-180, Math.min(180, MyAvatar.headPitch + (shifted ? SHIFT_MAG * VR_PITCH_INCREMENT : VR_PITCH_INCREMENT)));
                    pitchTimer = CAMERA_UPDATE_TIME;
                } else if (!Menu.isOptionChecked("Enable VR Mode")) {
                    MyAvatar.headPitch = Math.max(-180, Math.min(180, MyAvatar.headPitch + (shifted ? SHIFT_MAG * PITCH_INCREMENT : PITCH_INCREMENT)));
                }
                break;
            case 12: // shift
                if (shiftTimer < 0.0) {
                    shifted = !shifted;
                    shiftTimer = SHIFT_UPDATE_TIME;
                }
                break;
            default:
                break;
        }
    }

    function update(dt) {
        if (yawTimer >= 0.0) {
            yawTimer = yawTimer - dt;
        }
        if (pitchTimer >= 0.0) {
             pitchTimer = pitchTimer - dt;
        }
        if (shiftTimer >= 0.0) {
            shiftTimer = shiftTimer - dt;
        }
    }

	function setUp() {
		Controller.captureActionEvents();

        Controller.actionEvent.connect(onActionEvent);

        Script.update.connect(update);
    }

    function tearDown() {
    	Controller.releaseActionEvents();
    }

    setUp();
    Script.scriptEnding.connect(tearDown);
}());