OculusGoのコントローラーをUnity上でエミュレートする ref: https://qiita.com/nkjzm/items/83d3ab0862fbfef86b63

(抜粋)OVRInput.cs

public static Vector2 Get(Axis2D virtualMask, Controller controllerMask = Controller.Active)
{
    return GetResolvedAxis2D(virtualMask, RawAxis2D.None, controllerMask);
}

(抜粋)OVRInputEmulator.cs

public class OVRInputEmulator
{
    // このメソッドと入れ替える
    public static Vector2 Get(OVRInput.Axis2D virtualMask, OVRInput.Controller controllerMask = OVRInput.Controller.Active)
    {
        return GvrControllerInput.GetDevice(GvrControllerHand.Dominant).TouchPos;
    }
}

(抜粋)OVRInputReplacer.cs

#if UNITY_EDITOR
using System;
using System.Reflection;
using UnityEditor;

[InitializeOnLoad]
public class OVRInputReplacer
{
    static OVRInputReplacer()
    {
        // タッチパッド上の座標
        ReplaceMethod(typeof(OVRInput), typeof(OVRInputEmulator), "Get", new System.Type[] { typeof(OVRInput.Axis2D), typeof(OVRInput.Controller) });
    }

    static void ReplaceMethod(System.Type originType, System.Type replaceType, string methodName, System.Type[] types)
    {
        var origin = originType.GetMethod(methodName, types);
        var replace = replaceType.GetMethod(methodName, types);
        ReplaceFunctionPointer(origin, replace);
    }
    static void ReplaceFunctionPointer(MethodInfo originalMethod, MethodInfo replaceMethod)
    {
        unsafe
        {
            var originalPointer = originalMethod.MethodHandle.Value.ToPointer();
            var replacePointer = replaceMethod.MethodHandle.Value.ToPointer();
            *((int*)new IntPtr(((int*)originalPointer + 1)).ToPointer()) = *((int*)new IntPtr(((int*)replacePointer + 1)).ToPointer());
        }
    }
}
#endif

file0.txt

var pos = OVRInput.Get(OVRInput.Axis2D.PrimaryTouchpad)