VR Android Device - cannot test unless uploaded to a device

Questions & Answers
1

I’m new to Unity and VR development and have built a very basic VR app that can be viewed on an Android Smartphone. Navigation is via a raycasting.

The main issue is that I have to Build and Run to the device every time I want to test an update. Because the app is designed to run without controllers there are no other inputs.

Unity Version: 2019.4.21f1
Device: HUAWEU P10 lite
Android Version: 7.0

Question: Is there a way to simulate the movement of the head (using keyboard or mouse) in the unity player so that I don’t need to upload to the device every time.

2

Make the code compile and run for windows PC, or whatever PC you have so you can run it with the play button.

To emulate headset rotation I use the following code to use F,G keys, and the mouse, using the new input system (if using the old input system replace with Input.GetAxis(“Mouse X”); Input.GetKey(KeyCode.F); and similar. This is added to my CameraController class which is a gameobject containing the camera.

float fX = 5.0f, fY = 0, fZ = 0;
void LateUpdate()
{
    //emulate headset movement
    Keyboard keyboard = Keyboard.current;
    if (keyboard!=null && (keyboard.fKey.isPressed || GameManager.bNoVR))
    {
        //using mouse smoothing to avoid jerkyness
        float fMouseX, fMouseY;
        GetMouseMovementSmooth(out fMouseX, out fMouseY);
        if (keyboard.gKey.isPressed) fZ += fMouseX * 3.0f;
        else fY += fMouseX * 3.0f;
        fX -= fMouseY * 3.0f;

        if (keyboard.rKey.isPressed) { fX = 5.0f; fY = 0; fZ = 0; }

        transform.eulerAngles = new Vector3(fX, fY, fZ);
    }
}

//mouse movement smoothing to distribute movement every frame when framerate
//is above input rate at the cost of a delay in movement
// frame movement example
// before: 5 0 0 5 0 0
// now: 2 2 1 2 2 1 
float fCurX = 0, fCurY = 0;
float fStepX = 0, fStepY = 0;
public void GetMouseMovementSmooth(out float o_fX, out float o_fY)
{
    Mouse mouse = Mouse.current;
    Vector2 v = mouse.delta.ReadValue();
    fCurX += v.x;
    fCurY += v.y;

    float fStep = Time.deltaTime / 0.050f; //% of movement to distribute each time called
    if (fStep > 1.0f) fStep = 1.0f;  //if frametime too long we must not move faster
    if (fStep <= 0.0f) fStep = 1.0f; //if the timer has to low resolution compared to the framerate

    fStepX = fCurX * fStep;
    fStepY = fCurY * fStep;

    if (Mathf.Abs(fCurX) > Mathf.Abs(fStepX))
    {
        fCurX -= fStepX;
        o_fX = fStepX;
    } else {
        o_fX = fCurX;
        fCurX = 0;
    }

    if (Mathf.Abs(fCurY) > Mathf.Abs(fStepY))
    {
        fCurY -= fStepY;
        o_fY = fStepY;
    } else {
        o_fY = fCurY;
        fCurY = 0;
    }
}
3

@rh_galaxy thanks for the help, I will see what I can do with this. I’m using the old input system so i need to work out how to adjust the code.