Unity Preprocessor Directive Error?

Question

I have been having an issue with using anything like #region, #endregion, #if, #endif, etc in Unity lately.

I can't remember exactly what version of Unity this started with, but whenever I create a new project, I can't use regions at all.

It always says there is a parsing error, and then says something like this " error CS1027: Expected `#endif' directive "

To get that error, this is all I put

#if !UNITY_EDITOR
#endif

It doesn't matter if I include code between the statement, or strip all empty space around both sides of the directives..

I have another, older project, that I can use #regions, and #if statements in just fine, not really sure what changed or how to fix it.. I've been googling for solutions and it seems like no one else is having this problem? Is it a setting in monodevelop? White space? Invalid characters somewhere? I really have no idea why it is happening and it is driving me mad, haha.

If anyone has any suggestions, I would love to hear them!

Thanks for your time!

EDIT: Here is a example of #regions not working for me in a drag and drop script.. (BONUS, FREE DRAG AND DROP SCRIPT! LOL) Maybe just comment out the regions if they are giving you errors.. I had to. :(

Unity Console Errors:

Assets/Scripts/DragAndDrop.cs(12,254): error CS1028: Unexpected processor directive (no #region for this #endregion) (this one points me to the end of the summary tag?) Assets/Scripts/DragAndDrop.cs(14,45): error CS1028: Unexpected processor directive (no #region for this #endregion) ... etc

using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;
using System.Collections;
using System.Collections.Generic;

/// <summary>
/// DragAndDrop.
/// This class will be responsible for listening to drag
/// events on the gameobject.
/// It will handle what happens during each drag state.
/// </summary>

public class DragAndDrop : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler, IPointerDownHandler, IPointerUpHandler{
public RectTransform canvas;        // the uGui canvas in your scene

#region DRAG BOOLEANS
public bool canDrag = true;         // can this object be dragged?
public bool wasDragged = false;     // was this object recently dragged?
public bool isDragging = false;     // is object currently being dragged
public bool dragOnSurfaces = true;  
#endregion

#region SWIPE
public float comfortZoneVerticalSwipe = 50;     // the vertical swipe will have to be inside a 50 pixels horizontal boundary
public float comfortZoneHorizontalSwipe = 50;   // the horizontal swipe will have to be inside a 50 pixels vertical boundary
public float minSwipeDistance = 14;             // the swipe distance will have to be longer than this for it to be considered a swipe

public float startTime;     // when the touch started
public Vector2 startPos;    // where the touch started
public float maxSwipeTime;  // if the touch lasts longer than this, we consider it not a swipe
#endregion

#region PRIVATE
private GameObject draggingObject;
private RectTransform draggingTransform;
#endregion

#region UNITY CALLBACKS
void Awake(){
    canvas = GameObject.Find("Canvas").GetComponent<RectTransform>();
}
#endregion

#region TOUCH EVENTS
public void OnPointerDown(PointerEventData eventData){
    if(canDrag){
        wasDragged = false;
        // make sure object is parent to the canvas or it will disappear when picked up
        // I had to do this in word addiction because the letters were parented to tiles
        gameObject.transform.SetParent(canvas);
        // scale up when touched
        gameObject.transform.localScale = new Vector3(2, 2, 2);
    }
}

public void OnPointerUp(PointerEventData eventData){
    if(canDrag){
        // scale back down
        gameObject.transform.localScale = new Vector3(1, 1, 1);
    }
}
#endregion

#region DRAG EVENTS
public void OnBeginDrag(PointerEventData eventData){    
    if(canDrag){
        // start listening for swipe
        startPos = eventData.position;
        startTime = Time.time;

        // set drag variables
        isDragging = true;
        wasDragged = true;

        // run pick up logic
        PickUp(eventData);
    }
}

public void OnDrag(PointerEventData eventData){
    if(canDrag){
        if(draggingObject != null){
            Move(eventData);
        }
    }
}

public void OnEndDrag(PointerEventData eventData){
    if(canDrag){
        // swipe detection
        bool shouldFlick = false;
        float swipeTime = Time.time - startTime;
        float swipeDist = (eventData.position - startPos).magnitude;
        if (swipeTime < maxSwipeTime &&
            swipeDist > minSwipeDistance){
            shouldFlick = true;
        }
        // handle swipe/dropping
        if (shouldFlick){
            Debug.Log("FLICK");
        }else{
            isDragging = false;
            Place();
        }
    }
}
#endregion

#region EVENT FUNCTIONS
void PickUp(PointerEventData eventData){
    draggingObject = gameObject;
    Move(eventData);
}

void Move(PointerEventData eventData){
    if(dragOnSurfaces && eventData.pointerEnter != null && eventData.pointerEnter.transform as RectTransform != null){
        draggingTransform = eventData.pointerEnter.transform as RectTransform;
    }

    var rt = draggingObject.GetComponent<RectTransform>();
    Vector3 globalMousePos;
    if(RectTransformUtility.ScreenPointToWorldPointInRectangle(draggingTransform, eventData.position, eventData.pressEventCamera, out globalMousePos)){
        rt.position = globalMousePos;
        rt.rotation = draggingTransform.rotation;
    }
}

void Place(){
    Vector2 pos = new Vector2(transform.position.x, transform.position.y);
    Collider2D[] cols = Physics2D.OverlapCircleAll(pos, 10);
    float closestDistance = 0;
    GameObject closest = null;
    foreach(Collider2D col in cols){
        if(col.tag == "SomeTagToCheckFor"){
            Vector2 otherPos = new Vector2(col.transform.position.x, col.transform.position.y);
            if(closest == null){
                closest = col.gameObject;
                closestDistance = Vector2.Distance(pos, otherPos);
            } else{
                // here we will check to see if any other objects
                // are closer than the current closest object
                float distance = Vector2.Distance(pos, otherPos);
                if(distance < closestDistance){
                    // this object is closer
                    closest = col.gameObject;
                    closestDistance = distance;
                }
            }
        }
    }

    // snap to the closest object
    if(closest != null){
        // if something was detected to snap too?
    } else{
        // return object back?
    }
}
#endregion
}

Answer 1

So, regarding the EXAMPLE YOU GIVE.

I pasted it to a file HybFacebookExtensions.cs in an ordinary Unity5 project. It works perfectly - no errors.

It is likely there's a problem with your Unity install.

Unfortunately, nobody would be able to guess what is wrong there. Do you have a second machine on hand to test on?

---

#if !UNITY_EDITOR
Debug.Log("YO");
#endif

is a correct example.

it's likely you accidentally changed from Debug to Release.

Note. You can very confusingly get those sort of errors,

if your code just has simple syntax errors.

It's quite annoying. The following example can cause such unusual errors:

public Class Teste()
{
.. you meant to put it in here ..
}
#if UNITY_EDITOR
#endif