157 lines
4.8 KiB
C#
157 lines
4.8 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using System.IO;
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using System.Threading.Tasks;
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using UnityEngine;
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using UnityEngine.AddressableAssets;
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using UnityEngine.ResourceManagement.AsyncOperations;
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public class MonsterMoveLine
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{
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public static Dictionary<string, BezierCurveData> dic_BezierCurveDatas=new Dictionary<string, BezierCurveData>();
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public static List<BezierCurveData> curves = new List<BezierCurveData>();
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public class BezierCurveData
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{
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public string name;
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public Vector2 start;
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public List<Vector2> controlPoints = new List<Vector2>();
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public Vector2 end;
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}
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/// <summary>
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/// 读取数据 游戏开始时在awake调用aa包
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/// </summary>
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/// <param name="path"></param>
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/// <returns></returns>
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public static async Task LoadBezierTxtAsync(string path)
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{
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AsyncOperationHandle<TextAsset> handle = Addressables.LoadAssetAsync<TextAsset>(path);
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await handle.Task;
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var lines = handle.Result.text.Split('\n');
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foreach (var line in lines)
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{
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if (string.IsNullOrWhiteSpace(line)) continue;
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var parts = line.Split(';');
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BezierCurveData curve = new BezierCurveData();
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// 第一个是曲线名
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curve.name = parts[0];
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// 后面所有都是点
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List<Vector2> points = new List<Vector2>();
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for (int i = 1; i < parts.Length; i++)
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{
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points.Add(ParseVector(parts[i]));
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}
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// 第一个点是 start
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curve.start = points[0];
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// 最后一个点是 end
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curve.end = points[points.Count - 1];
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// 中间的都是 controlPoints
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for (int i = 1; i < points.Count - 1; i++)
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{
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curve.controlPoints.Add(points[i]);
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}
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curves.Add(curve);
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dic_BezierCurveDatas.Add(curve.name,curve);
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}
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}
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private static Vector2 ParseVector(string s)
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{
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var xy = s.Split(',');
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return new Vector2(float.Parse(xy[0]), float.Parse(xy[1]));
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}
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public BezierCurveData bezierCurveData;
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public float moveTime;
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public float moveSpeed;
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public void Init(BezierCurveData bezierCurveData, float Time)
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{
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this.bezierCurveData = bezierCurveData;
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this.moveTime = Time;
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}
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public Vector2 GetBezierPoint(float t)
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{
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t = t / moveTime;
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BezierCurveData curve=bezierCurveData;
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List<Vector2> points = new List<Vector2>();
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points.Add(curve.start);
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points.AddRange(curve.controlPoints);
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points.Add(curve.end);
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return DeCasteljau(points, t%1);
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}
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private Vector2 DeCasteljau(List<Vector2> points, float t)
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{
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while (points.Count > 1)
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{
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List<Vector2> next = new List<Vector2>();
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for (int i = 0; i < points.Count - 1; i++)
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{
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next.Add(Vector2.Lerp(points[i], points[i + 1], t));
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}
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points = next;
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}
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return CanvasToWorld( points[0],UIManager.Instance.uiRoot.GetComponent<RectTransform>(),Camera.main);
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}
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public static Vector3 CanvasToWorld(Vector2 canvasPos, RectTransform canvas, Camera cam)
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{
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// 1. 获取 Canvas 实际像素尺寸（自动适配所有设备）
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float canvasWidth = canvas.rect.width;
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float canvasHeight = canvas.rect.height;
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// 2. 正交相机的世界高度
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float worldHeight = cam.orthographicSize * 2f;
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// 3. 世界宽度 = 世界高度 * 屏幕宽高比
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float worldWidth = worldHeight * cam.aspect;
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// 4. 画布单位 → 世界单位比例（横竖一致）
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float scaleX = worldWidth / canvasWidth;
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float scaleY = worldHeight / canvasHeight;
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// 5. 你的 canvasPos 是以中心为原点的坐标
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float worldX = canvasPos.x * scaleX;
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float worldY = canvasPos.y * scaleY;
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// 6. 映射到世界 z = 0 平面
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return new Vector3(worldX, worldY, 0f);
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}
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public static Vector2 AnchoredPos_ToCanvas(RectTransform target, Canvas canvas)
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{
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// 1. 先把 anchoredPosition（父坐标）转换成世界坐标
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Vector3 worldPos = target.TransformPoint(target.anchoredPosition);
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// 2. 再把世界坐标转换成 Canvas 的局部坐标（等价于 Canvas 下的 anchoredPosition）
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RectTransform canvasRT = canvas.GetComponent<RectTransform>();
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Vector2 canvasLocalPos;
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RectTransformUtility.ScreenPointToLocalPointInRectangle(
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canvasRT,
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RectTransformUtility.WorldToScreenPoint(canvas.worldCamera, worldPos),
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canvas.renderMode == RenderMode.ScreenSpaceOverlay ? null : canvas.worldCamera,
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out canvasLocalPos
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);
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return canvasLocalPos;
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}
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}
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