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using System;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;
namespace Rewired.Demos;
[AddComponentMenu("")]
[RequireComponent(typeof(Image))]
public class TouchJoystickExample : MonoBehaviour, IPointerDownHandler, IEventSystemHandler, IPointerUpHandler, IDragHandler
{
public bool allowMouseControl = true;
public int radius = 50;
private Vector2 origAnchoredPosition;
private Vector3 origWorldPosition;
private Vector2 origScreenResolution;
private ScreenOrientation origScreenOrientation;
[NonSerialized]
private bool hasFinger;
[NonSerialized]
private int lastFingerId;
public Vector2 position { get; private set; }
private void Start()
{
if (SystemInfo.deviceType == DeviceType.Handheld)
{
allowMouseControl = false;
}
StoreOrigValues();
}
private void Update()
{
if ((float)Screen.width != origScreenResolution.x || (float)Screen.height != origScreenResolution.y || Screen.orientation != origScreenOrientation)
{
Restart();
StoreOrigValues();
}
}
private void Restart()
{
hasFinger = false;
(base.transform as RectTransform).anchoredPosition = origAnchoredPosition;
position = Vector2.zero;
}
private void StoreOrigValues()
{
origAnchoredPosition = (base.transform as RectTransform).anchoredPosition;
origWorldPosition = base.transform.position;
origScreenResolution = new Vector2(Screen.width, Screen.height);
origScreenOrientation = Screen.orientation;
}
private void UpdateValue(Vector3 value)
{
Vector3 vector = origWorldPosition - value;
vector.y = 0f - vector.y;
vector /= (float)radius;
position = new Vector2(0f - vector.x, vector.y);
}
void IPointerDownHandler.OnPointerDown(PointerEventData eventData)
{
if (!hasFinger && (allowMouseControl || !IsMousePointerId(eventData.pointerId)))
{
hasFinger = true;
lastFingerId = eventData.pointerId;
}
}
void IPointerUpHandler.OnPointerUp(PointerEventData eventData)
{
if (eventData.pointerId == lastFingerId && (allowMouseControl || !IsMousePointerId(eventData.pointerId)))
{
Restart();
}
}
void IDragHandler.OnDrag(PointerEventData eventData)
{
if (hasFinger && eventData.pointerId == lastFingerId)
{
Vector3 vector = new Vector3(eventData.position.x - origWorldPosition.x, eventData.position.y - origWorldPosition.y);
vector = Vector3.ClampMagnitude(vector, radius);
Vector3 value = origWorldPosition + vector;
base.transform.position = value;
UpdateValue(value);
}
}
private static bool IsMousePointerId(int id)
{
if (id != -1 && id != -2)
{
return id == -3;
}
return true;
}
}
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