112 lines
2.3 KiB
C#
112 lines
2.3 KiB
C#
using System;
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using System.Collections;
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using UnityEngine;
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using UnityEngine.UI;
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public class HUDBase : MonoBehaviour
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{
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public Action<HUDBase> DelDestroy;
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public bool HasTarget => mTargetTrans != null;
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public Transform TargetTrans => mTargetTrans;
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protected RectTransform mRectTrans = null;
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protected Transform mTargetTrans = null;
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protected Canvas mRootCanvas = null;
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protected Camera mCamera = null;
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protected float mHOffset;
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protected bool mIsActive = false;
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private void Awake()
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{
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mRectTrans = GetComponent<RectTransform>();
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if (mRectTrans == null)
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{
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Debug.LogError("RectTransform is invalid.");
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return;
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}
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OnAwake();
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}
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private void OnEnable()
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{
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Refresh();
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}
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public void Init(Transform pTargetTrans, Canvas pRootCanvas, Camera pCamera, float pHOffset)
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{
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if (pTargetTrans == null)
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{
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Debug.LogError("Target is invalid.");
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return;
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}
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mTargetTrans = pTargetTrans;
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mRootCanvas = pRootCanvas;
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mCamera = pCamera;
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mHOffset = pHOffset;
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mIsActive = true;
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Refresh();
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OnInit();
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}
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public void Refresh()
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{
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if (!HasTarget || mCamera == null)
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return;
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Vector3 worldPosition = mTargetTrans.position + Vector3.up * mHOffset;
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Vector3 screenPosition = mCamera.WorldToScreenPoint(worldPosition);
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Vector2 position;
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if (RectTransformUtility.ScreenPointToLocalPointInRectangle((RectTransform)mRootCanvas.transform, screenPosition, mRootCanvas.worldCamera, out position))
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{
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mRectTrans.localPosition = position;
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}
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}
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public void RefreshHeight(float pHeight)
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{
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mHOffset = pHeight;
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Refresh();
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}
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public void Destroy()
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{
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if (!mIsActive)
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return;
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mIsActive = false;
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ResetTarget(null);
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OnDestroy();
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DelDestroy?.Invoke(this);
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DelDestroy = null;
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}
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public virtual void ResetTarget(Transform pTargetTrans)
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{
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mTargetTrans = pTargetTrans;
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}
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protected virtual void OnAwake()
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{
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}
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protected virtual void OnInit()
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{
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}
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protected virtual void OnDestroy()
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{
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}
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} |