AppDebug

using UniRx;
using UnityEngine;
using Zenject;

public class TestDebug : IInitializable
{
    private float WidthHalf => Screen.width * 0.5f;
    private float HeightHalf => Screen.height * 0.5f;

    private Rect UpperLeftRect => new Rect(0, HeightHalf, WidthHalf, HeightHalf);
    private Rect UpperRightRect => new Rect(WidthHalf, HeightHalf, WidthHalf, HeightHalf);
    private Rect BottomLeftRect => new Rect(0, 0, WidthHalf, HeightHalf);
    private Rect BottomRightRect => new Rect(WidthHalf, 0, WidthHalf, HeightHalf);

    private bool UpperLeft => UpperLeftRect.Contains(Input.mousePosition);
    private bool UpperRight => UpperRightRect.Contains(Input.mousePosition);
    private bool BottomLeft => BottomLeftRect.Contains(Input.mousePosition);
    private bool BottomRight => BottomRightRect.Contains(Input.mousePosition);

    public void Initialize()
    {
        var clickStream = Observable.EveryUpdate()
            .Where(_ => Input.GetMouseButtonUp(0));

        var upperLeftStream = clickStream.Where(_ => UpperLeft);
        var upperRightStream = clickStream.Where(_ => UpperRight);
        var bottomLeftStream = clickStream.Where(_ => BottomLeft);
        var bottomRightStream = clickStream.Where(_ => BottomRight);

        upperLeftStream.Subscribe(l => Debug.Log(nameof(upperLeftStream)));
        upperRightStream.Subscribe(l => Debug.Log(nameof(upperRightStream)));
        bottomLeftStream.Subscribe(l => Debug.Log(nameof(bottomLeftStream)));
        bottomRightStream.Subscribe(l => Debug.Log(nameof(bottomRightStream)));
    }
}