302 lines
9.0 KiB
C#
302 lines
9.0 KiB
C#
using Assets.MyGame.Scripts.Net;
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using TMPro;
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using UnityEngine;
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using UnityEngine.EventSystems;
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using UnityEngine.UI;
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/// <summary>
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/// GPU 刮刮乐（三层架构版）
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///
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/// 层级结构：
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/// RawImage (prizeImage) ← 最下层：奖品图
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/// Text (tmp_AwardName) ← 中间层：奖品文字
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/// RawImage (scratchImage) ← 最上层：涂层遮罩（挂本脚本）
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/// </summary>
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public class GuaGuaLeGPU : SubUIBase, IPointerDownHandler, IDragHandler
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{
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[Header("UI 引用（必填）")]
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public RawImage scratchImage; // 最上层：涂层遮罩（挂此脚本）
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public TextMeshProUGUI tmp_AwardName; // 中间层：奖品文字
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public GuaGuaLeItem giftPrefab; // 奖品预制体（用于显示奖品图片）
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public Transform giftPrefabParent;
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[Header("材质（模板）")]
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public Material maskMat; // 使用 ScratchMask.shader（涂层遮罩）
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public Material eraseMat; // 使用 ScratchErase.shader（擦除）
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[Header("涂层颜色")]
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public Color coatColor = new Color(0.7f, 0.7f, 0.7f, 1f);
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[Header("笔刷")]
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[Range(0.01f, 0.3f)] public float brushSize = 0.06f;
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[Header("自动揭示")]
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[Range(0f, 1f)] public float revealThreshold = 0.6f;
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public bool autoReveal = true;
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[Header("事件")]
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public UnityEngine.Events.UnityEvent onRevealed;
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// ---- 运行时 ----
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private RenderTexture maskRT;
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private Material instanceMaskMat; // 涂层遮罩材质实例
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private Material instanceEraseMat; // 擦除材质实例
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private int rtWidth = 512;
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private int rtHeight = 512;
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private string currentAward;
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private bool isRevealed;
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private bool isScratching;
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private Vector2 lastUV;
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private bool hasLastUV;
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private Texture2D progressReadTex;
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private int dragCount;
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protected override void OnShow(object args = null)
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{
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base.OnShow(args);
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ResetCard();
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}
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private void Start()
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{
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if (scratchImage == null) { Debug.LogError("[GPU] scratchImage 为空！"); return; }
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if (maskMat == null) { Debug.LogError("[GPU] maskMat 为空！"); return; }
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if (eraseMat == null) { Debug.LogError("[GPU] eraseMat 为空！"); return; }
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InitCard();
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}
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private void InitCard()
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{
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maskRT = new RenderTexture(rtWidth, rtHeight, 0, RenderTextureFormat.ARGB32)
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{
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filterMode = FilterMode.Bilinear
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};
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maskRT.Create();
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ClearRT(maskRT, Color.white);
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instanceMaskMat = new Material(maskMat);
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instanceMaskMat.SetTexture("_MaskTex", maskRT);
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instanceMaskMat.SetColor("_CoatColor", coatColor);
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scratchImage.material = instanceMaskMat;
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scratchImage.texture = null;
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instanceEraseMat = new Material(eraseMat);
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instanceEraseMat.SetFloat("_BrushSize", brushSize);
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progressReadTex = new Texture2D(rtWidth, rtHeight, TextureFormat.ARGB32, false);
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ResetState();
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FetchAward();
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}
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private void ResetState()
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{
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isRevealed = false;
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isScratching = false;
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hasLastUV = false;
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dragCount = 0;
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}
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// ================================================================
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// API 抽奖
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// ================================================================
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private void FetchAward()
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{
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APIRequestList.ScratchCardDraw(result =>
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{
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if (result == null) return;
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currentAward = result.prizeName ?? "谢谢参与";
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if (tmp_AwardName != null)
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tmp_AwardName.text = currentAward;
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// 清除旧的奖励物品
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for (int i = giftPrefabParent.childCount - 1; i >= 0; i--)
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Destroy(giftPrefabParent.GetChild(i).gameObject);
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// 显示奖品图片（baseProduct.imageUrl）
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string imgUrl = result.baseProduct?.imageUrl;
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if (!string.IsNullOrEmpty(imgUrl) && giftPrefab != null)
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{
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var item = Instantiate(giftPrefab, giftPrefabParent);
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item.Init(imgUrl, result.count);
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}
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});
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}
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// ================================================================
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// 公开方法
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// ================================================================
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public void ResetCard()
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{
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if (maskRT == null) return;
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ClearRT(maskRT, Color.white);
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ResetState();
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if (instanceMaskMat != null)
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instanceMaskMat.SetColor("_CoatColor", coatColor);
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FetchAward();
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}
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public void RevealAll()
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{
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if (maskRT == null || isRevealed) return;
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isRevealed = true;
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ClearRT(maskRT, Color.black);
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if (tmp_AwardName != null)
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tmp_AwardName.text = currentAward;
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onRevealed?.Invoke();
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}
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// ================================================================
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// 输入处理
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// ================================================================
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public void OnPointerDown(PointerEventData e)
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{
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if (isRevealed) return;
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isScratching = true;
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if (UVFromPointer(e, out var uv))
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{
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ScratchAt(uv);
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lastUV = uv;
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hasLastUV = true;
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}
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TryAutoReveal();
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}
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public void OnDrag(PointerEventData e)
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{
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if (isRevealed || !isScratching) return;
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if (!UVFromPointer(e, out var uv)) return;
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if (hasLastUV)
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{
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float dist = Vector2.Distance(uv, lastUV);
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int steps = Mathf.Max(1, Mathf.CeilToInt(dist / (brushSize * 0.4f)));
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for (int i = 1; i <= steps; i++)
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{
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float t = (float)i / steps;
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var p = Vector2.Lerp(lastUV, uv, t);
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ScratchAt(p);
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}
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}
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else
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{
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ScratchAt(uv);
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}
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lastUV = uv;
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hasLastUV = true;
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if (++dragCount % 10 == 0)
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TryAutoReveal();
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}
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private void OnDisable()
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{
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isScratching = false;
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hasLastUV = false;
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}
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// ================================================================
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// 核心擦除（GPU）
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// ================================================================
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private void ScratchAt(Vector2 uv)
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{
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instanceEraseMat.SetVector("_BrushPos", new Vector4(uv.x, uv.y, 0, 0));
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var temp = RenderTexture.GetTemporary(rtWidth, rtHeight, 0, RenderTextureFormat.ARGB32);
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Graphics.Blit(maskRT, temp, instanceEraseMat);
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Graphics.Blit(temp, maskRT);
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RenderTexture.ReleaseTemporary(temp);
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}
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// ================================================================
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// 进度检测
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// ================================================================
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private void TryAutoReveal()
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{
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if (isRevealed || !autoReveal || revealThreshold <= 0f) return;
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if (CalcRevealProgress() >= revealThreshold)
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RevealAll();
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}
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public float CalcRevealProgress()
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{
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if (maskRT == null || progressReadTex == null) return 0f;
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RenderTexture prev = RenderTexture.active;
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RenderTexture.active = maskRT;
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progressReadTex.ReadPixels(new Rect(0, 0, rtWidth, rtHeight), 0, 0, false);
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progressReadTex.Apply();
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RenderTexture.active = prev;
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Color32[] pixels = progressReadTex.GetPixels32();
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int total = 0, cleared = 0;
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int step = Mathf.Max(1, pixels.Length / 2048);
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for (int i = 0; i < pixels.Length; i += step)
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{
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total++;
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if (pixels[i].r < 50) cleared++;
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}
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return total == 0 ? 0f : (float)cleared / total;
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}
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// ================================================================
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// 工具
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// ================================================================
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private static void ClearRT(RenderTexture rt, Color color)
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{
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RenderTexture prev = RenderTexture.active;
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RenderTexture.active = rt;
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GL.Clear(false, true, color);
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RenderTexture.active = prev;
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}
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private bool UVFromPointer(PointerEventData e, out Vector2 uv)
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{
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uv = Vector2.zero;
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var rt = scratchImage.rectTransform;
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if (!RectTransformUtility.ScreenPointToLocalPointInRectangle(
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rt, e.position, e.pressEventCamera, out var localPos))
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return false;
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var rect = rt.rect;
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if (rect.width <= 0f || rect.height <= 0f) return false;
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uv = new Vector2(
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(localPos.x - rect.x) / rect.width,
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(localPos.y - rect.y) / rect.height
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);
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return uv.x >= 0f && uv.x <= 1f && uv.y >= 0f && uv.y <= 1f;
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}
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public string CurrentAward => currentAward;
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public bool IsRevealed => isRevealed;
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private void OnDestroy()
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{
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if (maskRT != null) { maskRT.Release(); Destroy(maskRT); }
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if (instanceMaskMat != null) Destroy(instanceMaskMat);
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if (instanceEraseMat != null) Destroy(instanceEraseMat);
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if (progressReadTex != null) Destroy(progressReadTex);
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}
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}
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