//
//  lookWithTouch.js
//  examples
//
//  Created by Brad Hefta-Gaub on 1/28/14.
//  Copyright 2014 High Fidelity, Inc.
//
//  This is an example script that demonstrates use of the Controller class
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//

var startedTouching = false;
var lastX = 0;
var lastY = 0;
var yawFromMouse = 0;
var pitchFromMouse = 0;
var wantDebugging = false;

function touchBeginEvent(event) {
    if (wantDebugging) {
        print("touchBeginEvent event.x,y=" + event.x + ", " + event.y);
    }
    lastX = event.x;
    lastY = event.y;
    startedTouching = true;
}

function touchEndEvent(event) {
    if (wantDebugging) {
        print("touchEndEvent event.x,y=" + event.x + ", " + event.y);
    }
    startedTouching = false;
}

function touchUpdateEvent(event) {
    if (wantDebugging) {
        print("touchUpdateEvent event.x,y=" + event.x + ", " + event.y);
    }

    var MOUSE_YAW_SCALE = -0.25;
    var MOUSE_PITCH_SCALE = -12.5;
    var FIXED_MOUSE_TIMESTEP = 0.016;
    yawFromMouse += ((event.x - lastX) * MOUSE_YAW_SCALE * FIXED_MOUSE_TIMESTEP);
    pitchFromMouse += ((event.y - lastY) * MOUSE_PITCH_SCALE * FIXED_MOUSE_TIMESTEP);
    lastX = event.x;
    lastY = event.y;
}

function update(deltaTime) {
    if (startedTouching) {
        // rotate body yaw for yaw received from mouse
        var newOrientation = Quat.multiply(MyAvatar.orientation, Quat.fromPitchYawRollRadians(0, yawFromMouse, 0));
        if (wantDebugging) {
            print("changing orientation"
                + " [old]MyAvatar.orientation="+MyAvatar.orientation.x + "," + MyAvatar.orientation.y + "," 
                + MyAvatar.orientation.z + "," + MyAvatar.orientation.w
                + " newOrientation="+newOrientation.x + "," + newOrientation.y + "," + newOrientation.z + "," + newOrientation.w);
        }
        MyAvatar.orientation = newOrientation;
        yawFromMouse = 0;

        // apply pitch from mouse
        var newPitch = MyAvatar.headPitch + pitchFromMouse;
        if (wantDebugging) {
            print("changing pitch [old]MyAvatar.headPitch="+MyAvatar.headPitch+ " newPitch="+newPitch);
        }
        MyAvatar.headPitch = newPitch;
        pitchFromMouse = 0;
    }
}

// Map the mouse events to our functions
Controller.touchBeginEvent.connect(touchBeginEvent);
Controller.touchUpdateEvent.connect(touchUpdateEvent);
Controller.touchEndEvent.connect(touchEndEvent);

// disable the standard application for mouse events
Controller.captureTouchEvents();

function scriptEnding() {
    // re-enabled the standard application for mouse events
    Controller.releaseTouchEvents();
}

// would be nice to change to update
Script.update.connect(update);
Script.scriptEnding.connect(scriptEnding);