258 lines
9.2 KiB
C#
258 lines
9.2 KiB
C#
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using GCGame;
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using UnityEngine;
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using UnityEngine.UI;
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using UnityEngine.EventSystems;
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// 注：JoyStickLogic运动范围由JoyStickRoot决定
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// 默认JoyStickRoot左下角 = 屏幕（0,0）位置，如有修改，给ScenePointToRootOffset函数加上对应偏移
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public class JoyStickLogic : MonoBehaviour, IDragHandler, IPointerDownHandler, IPointerUpHandler
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{
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private const float _idleAlpha = 0.7f;
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private const float _activeAlpha = 1f;
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public int? CurrentPointerId { get; private set; }
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// 摇杆输入
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public Vector2? input { get; private set; }
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private RectTransform _rectTransform;
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// 自适应位置范围
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private RectTransform _flexibleArea;
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// 可移动部分根节点
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private Image _background;
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// 方向箭头
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private Image _arrow;
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// 方向球
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private Image _joyStick;
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// 摇杆左下角位置偏移
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private Vector2 _anchorPos;
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// 摇杆可运动区域最小xy，最大xy
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private Vector4 _joyStickArea;
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// 摇杆原始位置
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private Vector2 _originPos;
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private float _joyStickRadius;
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private void Awake()
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{
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_rectTransform = (RectTransform)transform;
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_flexibleArea = (RectTransform)_rectTransform.Find("FlexibleArea");
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_background = _rectTransform.Find("BackGround").GetComponent<Image>();
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_joyStick = _background.transform.Find("JoyStickSprite").GetComponent<Image>();
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_arrow = _background.transform.Find("Arrow").GetComponent<Image>();
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_originPos = _background.rectTransform.anchoredPosition;
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_anchorPos = _rectTransform.anchoredPosition;
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}
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// Use this for initialization
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private void Start()
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{
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SetPressed(false);
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SetMoving(false);
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var flexibleRect = _flexibleArea.rect;
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var joyStickRect = _background.rectTransform.rect;
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_joyStickArea = new Vector4(joyStickRect.size.x * 0.5f,
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joyStickRect.size.y * 0.5f,
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flexibleRect.size.x - joyStickRect.size.x * 0.5f,
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flexibleRect.size.y - joyStickRect.size.y * 0.5f);
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if (_joyStickArea.x > _joyStickArea.z)
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_joyStickArea.z = _joyStickArea.x;
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if (_joyStickArea.y > _joyStickArea.w)
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_joyStickArea.w = _joyStickArea.y;
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_joyStickRadius = _background.rectTransform.rect.width * 0.5f - _joyStick.rectTransform.rect.width * 0.5f;
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}
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public void OnPointerDown(PointerEventData eventData)
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{
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if (PlayerPreferenceData.SystemUseJoyStick && CurrentPointerId == null && ProcessInput.Instance != null && !ProcessInput.Instance.isBlocked)
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{
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CurrentPointerId = eventData.pointerId;
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SetPressed(true);
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var uiPos = UIManager.Instance().ScreenPointToUiPoint(eventData.position, false) - _anchorPos;
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uiPos.x = Mathf.Clamp(uiPos.x, _joyStickArea.x, _joyStickArea.z);
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uiPos.y = Mathf.Clamp(uiPos.y, _joyStickArea.y, _joyStickArea.w);
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_background.rectTransform.anchoredPosition = uiPos;
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}
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}
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//
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// public void OnBeginDrag(PointerEventData eventData)
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// {
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// if (CurrentPointerId == eventData.pointerId)
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// SetMoving(true);
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// }
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public void OnDrag(PointerEventData eventData)
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{
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if (PlayerPreferenceData.SystemUseJoyStick && CurrentPointerId == eventData.pointerId)
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{
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var uiPos = UIManager.Instance().ScreenPointToUiPoint(eventData.position, false) - _anchorPos;
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var delta = uiPos - _background.rectTransform.anchoredPosition;
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if (delta == Vector2.zero)
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{
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input = Vector2.zero;
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SetMoving(false);
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}
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else
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{
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input = delta.normalized;
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var magnitude = delta.magnitude;
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delta = input.Value * Mathf.Min(magnitude, _joyStickRadius);
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SetMoving(true);
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// 注：箭头图标原始方向是向右的
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_arrow.rectTransform.localRotation = Quaternion.FromToRotation(Vector3.right, (Vector3)input.Value);
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}
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_joyStick.rectTransform.anchoredPosition = delta;
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}
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}
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public void OnPointerUp(PointerEventData eventData)
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{
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if (CurrentPointerId == eventData.pointerId)
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ReleaseJoyStick();
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}
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//
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// //private void OnEnable()
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// //{
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// // GameManager.AddLateUpdate(UpdateJoyStick, GameManager.joyStickUpdateOrder);
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// //}
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//
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// //private void OnDisable()
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// //{
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// // GameManager.RemoveLateUpdate(UpdateJoyStick, GameManager.joyStickUpdateOrder);
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// //}
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//
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// /// <summary>
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// /// 发送摇杆状态
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// /// </summary>
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// private void SendMoveDirection()
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// {
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// CurrentInput = mRect_JoySticSprite.anchoredPosition;
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// if (CurrentInput != Vector2.zero)
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// CurrentInput = CurrentInput.normalized;
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// }
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// private Vector2 ScenePointToRootOffset(Vector2 screenPoint)
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// {
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// // 按照100单位比，JoyStickRoot左下角 = 屏幕（0,0）位置；
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// // 如果有特殊Ui尺寸或者其他修改，需要额外处理；
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// return UIManager.Instance().ScreenPointToUiPoint(screenPoint, false);
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// }
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public void CloseWindow()
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{
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ReleaseJoyStick();
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gameObject.SetActive(false);
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}
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public void OpenWindow()
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{
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gameObject.SetActive(true);
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}
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public void ReleaseJoyStick()
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{
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input = null;
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CurrentPointerId = null;
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SetPressed(false);
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SetMoving(false);
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_background.rectTransform.anchoredPosition = _originPos;
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_joyStick.rectTransform.anchoredPosition = Vector2.zero;
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}
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private void SetPressed(bool isActive)
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{
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SetImageAlpah(_background, isActive);
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SetImageAlpah(_joyStick, isActive);
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}
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private void SetMoving(bool isMoving)
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{
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_arrow.gameObject.SetActive(isMoving);
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}
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private static void SetImageAlpah(Graphic image, bool isActive)
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{
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var color = image.color;
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color.a = isActive ? _activeAlpha : _idleAlpha;
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image.color = color;
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}
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//
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// public bool IsInBackClick(Vector3 clickPoint)
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// {
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// var pointVec = Utils.PositionToRectLocal(mRect_backClick, clickPoint);
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// return mRect_backClick.rect.Contains(pointVec);
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// }
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//
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// public void OnPointerDown(Vector2 point)
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// {
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// if (!IsCloseWindow)
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// {
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// IsActive = true;
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// // 拖动时重设精灵透明度
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// SetImageAlpah(m_JoyStickSprite, 1);
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// SetImageAlpah(m_BackGround2, 1);
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// mRect_JoySticSpriteArrow.gameObject.SetActive(true);
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// OnDrag(point);
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// }
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// }
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//
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// public void ArrowDirect()
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// {
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// Vector3 localPos = mRect_JoySticSpriteParent.InverseTransformPoint(mRect_JoySticSprite.position);
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// float angle = Vector3.Angle(localPos, new Vector3(1, 0, 0));
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// int dir = localPos.y < 0 ? -1 : 1;
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// mRect_JoySticSpriteArrow.localEulerAngles = new Vector3(0, 0, angle * dir);
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// }
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//
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// public void OnDrag(Vector2 point)
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// {
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// if (!IsCloseWindow)
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// {
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// var newPos = ScenePointToRootOffset(point);
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// // 小球尚未超出偏移范围时
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// if ((newPos - mRect_JoySticSpriteParent.anchoredPosition).magnitude < _parentRadius)
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// mRect_JoySticSprite.anchoredPosition = newPos - mRect_JoySticSpriteParent.anchoredPosition;
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// // 小球超出偏移范围，需要移动外圈时
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// else
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// {
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// // 算法比较麻烦 - 先用小球移动外圈的位置，然后用外圈和偏移值确定小球位置
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// var offset = newPos - mRect_JoySticSpriteParent.anchoredPosition;
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// // 圈内预期偏移数值
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// var offsetInCircle = offset.normalized * _parentRadius;
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// // 外圈预期位置，然后用边界进行校正
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// var newParentPos = newPos - offsetInCircle;
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// newParentPos = GetSpritePosInBoundary(_parentRadius, newParentPos);
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// mRect_JoySticSpriteParent.anchoredPosition = newParentPos;
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// // 重新对齐小球位置
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// mRect_JoySticSprite.anchoredPosition = offsetInCircle;
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// }
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// ArrowDirect();
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// }
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// }
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//
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// public void OnPointerUp()
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// {
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// // 恢复摇杆精灵透明度
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// ReleaseJoyStick();
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// }
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//
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// /// <summary>
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// /// 在满足边界范围的情况下，移动目标RectTransform
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// /// </summary>
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// /// <param name="radius">目标半径</param>
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// /// <param name="anchoredPosition">目标预期位置</param>
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// /// <returns></returns>
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// private Vector2 GetSpritePosInBoundary(float radius, Vector2 anchoredPosition)
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// {
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// var maxPos = _rectTransform.rect.size - Vector2.one * radius;
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// var minPos = Vector2.one * radius;
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// anchoredPosition.x = Mathf.Clamp(anchoredPosition.x, minPos.x, maxPos.x);
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// anchoredPosition.y = Mathf.Clamp(anchoredPosition.y, minPos.y, maxPos.y);
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// return anchoredPosition;
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// }
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//
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// private void UpdateJoyStick()
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// {
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// if (IsActive)
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// SendMoveDirection();
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// else
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// CurrentInput = Vector2.zero;
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// }
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}
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