koobas.hobune.stream
Joystick moves unexpectedly in Unity
Context: I am using the FixedJoystick in Joystick Pack by Fenerax Studios on Unity asset store in my project.
The problem is whenever I touch the joystick (without even moving it), the handle immediately shifts to the upper right corner and my model moves downwards as a result.
Below is the image illustrating joystick issue:
[1]: /storage/temp/133489-joystick-bug.png
The red cross in the image indicates where the user touches the joystick, the handle doesn't move there as expected but jumps upwards instead.
Here is the code:
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;
public class FixedJoystick : Joystick
{
Vector2 joystickPosition = Vector2.zero;
public GameObject heldDownBlockRegion;
private Camera cam = new Camera();
private bool inARMode = true;
void Start()
{
joystickPosition = RectTransformUtility.WorldToScreenPoint(cam, background.position);
gameObject.SetActive(false);
}
public override void OnDrag(PointerEventData eventData)
{
Vector2 direction = eventData.position - joystickPosition;
inputVector = (direction.magnitude > background.sizeDelta.x / 2f) ? direction.normalized : direction / (background.sizeDelta.x / 2f);
ClampJoystick();
handle.anchoredPosition = (inputVector * background.sizeDelta.x / 2f) * handleLimit;
}
public override void OnPointerDown(PointerEventData eventData)
{
heldDownBlockRegion.SetActive(true);
OnDrag(eventData);
}
public override void OnPointerUp(PointerEventData eventData)
{
heldDownBlockRegion.SetActive(false);
inputVector = Vector2.zero;
handle.anchoredPosition = Vector2.zero;
}
public void changeToAR()
{
showJoyStick(false);
inARMode = true;
}
public void changeToNonAR()
{
inARMode = false;
}
public void showJoyStick(bool action)
{
if (!inARMode)
{
if (action == false)
{
heldDownBlockRegion.SetActive(false);
inputVector = Vector2.zero;
handle.anchoredPosition = Vector2.zero;
}
gameObject.SetActive(action);
}
}
}
I am pretty new to this and would really appreciate any help. Thanks!
@cho_yangxuan I had this same problem but with the floating joystick. The first touch down would move my player object down left until release. I figured out a solution to simulate a pointer down and up at the Start method in the Joystick class. Here is the code:
var pointer = new PointerEventData(EventSystem.current);
ExecuteEvents.Execute(gameObject, pointer, ExecuteEvents.pointerDownHandler);
ExecuteEvents.Execute(gameObject, pointer, ExecuteEvents.pointerUpHandler);
That's actually pretty smart. I had the same problem and tried everything to fix it from my code until I finally came to the conclusion that the joystick package itself is bugged for some reason (I may be wrong though)
anyways, your solution worked perfectly for me but with a $$anonymous$$or change since I had a problem with dragging not tapping. Here is the code for any future lost developers as myself!
var pointer = new PointerEventData(EventSystem.current);
ExecuteEvents.Execute(gameObject, pointer, ExecuteEvents.dragHandler);
ExecuteEvents.Execute(gameObject, pointer, ExecuteEvents.pointerUpHandler);
