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v_shanxia
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feat： 增加多点触控和单点触控示例
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‎Demo/API_V2/Assets/API/Chumo.meta

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‎Demo/API_V2/Assets/API/Chumo/ChumoSO.asset

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m_Script: {fileID: 11500000, guid: 77d040911b51640ea8a6e857528c3a0d, type: 3}
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m_Name: ChumoSO
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‎Demo/API_V2/Assets/API/Chumo/ChumoSO.asset.meta

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‎Demo/API_V2/Assets/API/Chumo/TouchTest.cs

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using UnityEngine;
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using UnityEngine.UI;
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using UnityEngine.EventSystems;
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using System.Collections.Generic;
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public class TouchTest : MonoBehaviour,
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IPointerDownHandler,
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IDragHandler,
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IPointerUpHandler,
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IBeginDragHandler,
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IEndDragHandler
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{
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[SerializeField] private Canvas canvas; // 通过Inspector面板拖拽赋值
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private Dictionary<int, List<GameObject>> touchCircles = new Dictionary<int, List<GameObject>>();
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// 移除currentPointerId字段，改为完全依赖touchCircles字典管理所有触点
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void Start()
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{
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Debug.Log("TouchTest脚本初始化开始");
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// 确保Canvas设置正确
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if (canvas == null)
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{
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Debug.Log("未指定Canvas，尝试自动查找...");
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canvas = FindObjectOfType<Canvas>();
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if (canvas == null)
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{
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Debug.LogError("未找到Canvas，请在场景中创建Canvas并拖拽赋值");
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enabled = false;
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return;
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}
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Debug.Log($"已自动找到Canvas: {canvas.name}");
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}
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// 确保Canvas有GraphicRaycaster组件
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if (!canvas.TryGetComponent<GraphicRaycaster>(out var raycaster))
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{
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Debug.Log("Canvas缺少GraphicRaycaster，正在添加...");
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raycaster = canvas.gameObject.AddComponent<GraphicRaycaster>();
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Debug.Log($"已添加GraphicRaycaster: {raycaster != null}");
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}
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// 确保EventSystem设置正确
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EventSystem eventSystem = FindObjectOfType<EventSystem>();
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if (eventSystem == null)
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{
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Debug.Log("未找到EventSystem，正在创建...");
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eventSystem = new GameObject("EventSystem").AddComponent<EventSystem>();
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var inputModule = eventSystem.gameObject.AddComponent<StandaloneInputModule>();
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Debug.Log($"已创建EventSystem和StandaloneInputModule: {inputModule != null}");
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}
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else if (eventSystem.GetComponent<StandaloneInputModule>() == null)
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{
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Debug.Log("EventSystem缺少StandaloneInputModule，正在添加...");
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var inputModule = eventSystem.gameObject.AddComponent<StandaloneInputModule>();
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Debug.Log($"已添加StandaloneInputModule: {inputModule != null}");
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}
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// 确保脚本挂载在可接收事件的UI对象上
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if (!TryGetComponent<Graphic>(out var graphic))
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{
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Debug.Log("当前对象缺少Graphic组件，正在添加透明Image...");
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var image = gameObject.AddComponent<Image>();
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// image.color = new Color(0, 0, 0, 0.01f);
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image.raycastTarget = true; // 确保能接收事件
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Debug.Log($"已添加Image组件，raycastTarget: {image.raycastTarget}");
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}
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else
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{
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graphic.raycastTarget = true; // 确保现有Graphic能接收事件
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Debug.Log($"已确保Graphic组件raycastTarget为true: {graphic.raycastTarget}");
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}
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// 确保RectTransform覆盖整个屏幕
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var rectTransform = GetComponent<RectTransform>();
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if (rectTransform != null)
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{
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rectTransform.anchorMin = Vector2.zero;
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rectTransform.anchorMax = Vector2.one;
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rectTransform.sizeDelta = Vector2.zero;
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Debug.Log("已设置RectTransform为全屏覆盖");
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}
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Debug.Log("TouchTest脚本初始化完成");
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}
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public void OnPointerDown(PointerEventData eventData)
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{
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Debug.Log($"OnPointerDown - 指针ID: {eventData.pointerId}, 位置: {eventData.position}, 按下按钮: {eventData.button}");
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HandlePointerEvent(eventData, 1.0f); // 初始点使用完整大小
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}
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public void OnBeginDrag(PointerEventData eventData)
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{
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// 拖动开始时创建新圆点
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HandlePointerEvent(eventData, 0.5f); // 拖动点使用半大小
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}
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public void OnDrag(PointerEventData eventData)
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{
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// 拖动过程中持续创建新圆点
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HandlePointerEvent(eventData, 0.5f);
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}
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public void OnPointerUp(PointerEventData eventData)
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{
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// 指针抬起时清除对应圆点
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HandlePointerEnd(eventData);
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}
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public void OnEndDrag(PointerEventData eventData)
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{
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// 拖动结束时清除对应圆点
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HandlePointerEnd(eventData);
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}
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void HandlePointerEvent(PointerEventData eventData, float scale)
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{
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Vector2 localPoint;
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RectTransformUtility.ScreenPointToLocalPointInRectangle(
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canvas.transform as RectTransform,
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eventData.position,
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canvas.worldCamera,
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out localPoint);
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// 如果是新触点，创建新颜色圆点
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if (!touchCircles.ContainsKey(eventData.pointerId))
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{
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touchCircles[eventData.pointerId] = new List<GameObject>();
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GameObject newCircle = CreateCircle(localPoint, GetRandomColor(), 1.0f);
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touchCircles[eventData.pointerId].Add(newCircle);
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}
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else
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{
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// 已有触点则使用相同颜色创建新圆点
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Color circleColor = touchCircles[eventData.pointerId][0].GetComponent<Image>().color;
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GameObject newCircle = CreateCircle(localPoint, circleColor, scale);
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touchCircles[eventData.pointerId].Add(newCircle);
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}
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}
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void HandlePointerEnd(PointerEventData eventData)
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{
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if (touchCircles.ContainsKey(eventData.pointerId))
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{
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foreach (GameObject circle in touchCircles[eventData.pointerId])
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{
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Destroy(circle);
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}
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touchCircles.Remove(eventData.pointerId);
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}
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}
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GameObject CreateCircle(Vector2 position, Color color, float scale)
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{
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GameObject circle = new GameObject("Circle");
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circle.transform.SetParent(canvas.transform, false);
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Image image = circle.AddComponent<Image>();
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image.color = color;
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RectTransform rectTransform = circle.GetComponent<RectTransform>();
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rectTransform.sizeDelta = new Vector2(100, 100) * scale;
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rectTransform.anchoredPosition = position;
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return circle;
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}
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// 使用静态种子确保跨平台一致性
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private System.Random _random = new System.Random();
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Color GetRandomColor()
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{
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// 使用System.Random替代Unity的Random.value
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float h = (float)_random.NextDouble();
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float s = 0.7f + (float)_random.NextDouble() * 0.3f; // 饱和度0.7-1.0
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float v = 0.8f + (float)_random.NextDouble() * 0.2f; // 明度0.8-1.0
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Color color = Color.HSVToRGB(h, s, v);
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color.a = 0.8f;
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// WebGL下强制刷新颜色
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#if UNITY_WEBGL
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color = new Color(color.r, color.g, color.b, color.a);
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#endif
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return color;
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}
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}

‎Demo/API_V2/Assets/API/Chumo/TouchTest.cs.meta

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