637 lines
21 KiB
C#
637 lines
21 KiB
C#
using System.Collections.Generic;
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using Shapes;
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using UnityEngine;
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using UnityEngine.Rendering.Universal;
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using UnityEngine.VFX;
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using DG.Tweening;
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public class GearFollower : MonoBehaviour
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{
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[Header("参数")]
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public SpriteRenderer targetSpriteRenderer;
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public float snapDistance = 0.3f;
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public float detachDistance = 1.0f;
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public float tractionSpeed = 2f;
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public float edgePointsScale = 1.2f; // 边缘点缩放倍率
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[Header("切割轨迹")]
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public LineRenderer cutLineRenderer;
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public float cutLineWidth = 0.1f;
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public float noiseAmount = 0.05f; // 毛刺偏移幅度
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public float segmentDuration = 4f; // 线段持续时间
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[Header("震动与光照反馈")]
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public Light2D cutLight; // 需要使用 Unity 的 2D 点光源（URP）
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public float lightPulseSpeed = 5f;
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public float lightMaxIntensity = 1.5f;
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public float shakeAmount = 0.05f;
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[Header("VFX火花")]
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public VisualEffect sparkVFX; // 关联Spark VFX Graph组件
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public float maxEmissionRate = 50f; // 最大发射速率
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public float emissionChangeSpeed = 100f; // 发射速率变化速度
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[Header("切割完成效果")]
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public float cutCompletionThreshold = 0.95f; // 切割完成阈值（切割路径占边缘的比例）
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public float minCutLength = 0.5f; // 最小切割长度（相对于总长度的比例）
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public float targetShakeAmount = 0.02f; // 目标抖动幅度
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public float cutCompleteTiltAngle = 15f; // 切割完成后的倾斜角度
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public float cutCompleteOffset = 0.2f; // 切割完成后的位移
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public float cutCompleteScale = 1.2f; // 切割完成后的放大倍数
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public float fadeOutDuration = 1f; // 淡出持续时间
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public float cutCompleteDelay = 1f; // 切割完成后的延迟时间
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public float scaleUpDuration = 1f; // 放大动画持续时间
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public float fadeOutDelay = 1f; // 淡出前的延迟时间
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public AudioClip cutCompleteSound; // 切割完成音效
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private float totalEdgeLength = 0f; // 总边缘长度
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private float cutLength = 0f; // 已切割长度
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private bool isCutComplete = false;
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private bool isFadingOut = false;
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private float fadeOutTimer = 0f;
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private Vector3 originalTargetPosition;
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private Quaternion originalTargetRotation;
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private Vector3 originalTargetScale;
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private AudioSource audioSource;
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private Sequence cutCompleteSequence; // DOTween序列
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private HashSet<int> cutEdgeIndices = new HashSet<int>(); // 记录已切割的边缘点索引
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private float currentEmissionRate = 0f;
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private Vector3 originalLocalPosition;
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private List<Vector2> edgePoints;
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private List<Vector2> originalEdgePoints; // 存储原始边缘点
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private int currentEdgeIndex = 0;
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private int tractionDirection = 1;
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private enum State { Follow, Traction }
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private State currentState = State.Follow;
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private Camera mainCamera;
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private bool isCutting = false;
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private float directionSwitchCooldown = 0.2f;
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private float directionSwitchTimer = 0f;
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private class TimedPoint
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{
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public Vector3 position;
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public float timeAdded;
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public TimedPoint(Vector3 pos, float time)
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{
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position = pos;
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timeAdded = time;
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}
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}
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private List<TimedPoint> timedCutPoints = new List<TimedPoint>();
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public float cutLineDelay = 3f;
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private Vector3 shakeOffset = Vector3.zero;
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private Vector3 targetPosition = Vector3.zero;
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private bool isInTractionMode = false;
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void Start()
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{
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mainCamera = Camera.main;
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LoadEdgePointsFromSprite();
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CalculateTotalEdgeLength();
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if (cutLineRenderer != null)
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{
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cutLineRenderer.positionCount = 0;
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cutLineRenderer.widthCurve = AnimationCurve.Constant(0, 1, cutLineWidth);
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cutLineRenderer.material = new Material(Shader.Find("Sprites/Default"));
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cutLineRenderer.numCapVertices = 0;
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cutLineRenderer.sortingOrder = 1;
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}
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if (cutLight != null)
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{
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cutLight.intensity = 0f;
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cutLight.enabled = false;
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}
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// 初始化目标相关变量
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if (targetSpriteRenderer != null)
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{
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originalTargetPosition = targetSpriteRenderer.transform.position;
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originalTargetRotation = targetSpriteRenderer.transform.rotation;
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originalTargetScale = targetSpriteRenderer.transform.localScale;
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}
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// 添加音频源组件
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audioSource = gameObject.AddComponent<AudioSource>();
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audioSource.playOnAwake = false;
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audioSource.spatialBlend = 0f; // 2D音效
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}
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void Update()
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{
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Vector2 mouseWorldPos = mainCamera.ScreenToWorldPoint(Input.mousePosition);
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if (Input.GetMouseButton(0))
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{
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transform.Rotate(Vector3.forward, -360f * Time.deltaTime);
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}
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switch (currentState)
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{
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case State.Follow:
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UpdateFollowState(mouseWorldPos);
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break;
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case State.Traction:
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UpdateTractionState(mouseWorldPos);
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break;
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}
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UpdateCutLineRenderer();
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UpdateVisualFeedback();
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}
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private void UpdateVisualFeedback()
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{
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if (isInTractionMode && isCutting)
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{
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// 原始小幅震动
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Vector2 baseShake = Random.insideUnitCircle * shakeAmount;
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shakeOffset = (Vector3)baseShake;
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transform.position = targetPosition + shakeOffset;
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// 目标抖动
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if (targetSpriteRenderer != null && !isCutComplete)
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{
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Vector2 targetShake = Random.insideUnitCircle * targetShakeAmount;
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targetSpriteRenderer.transform.position = originalTargetPosition + (Vector3)targetShake;
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}
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// 根据震动幅度控制灯光强度
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if (cutLight != null)
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{
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cutLight.enabled = true;
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float intensity = shakeOffset.magnitude / shakeAmount; // 得到 [0,1] 比例
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cutLight.intensity = intensity * lightMaxIntensity;
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}
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}
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else
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{
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shakeOffset = Vector3.zero;
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if (isInTractionMode)
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{
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transform.position = targetPosition;
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}
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if (cutLight != null)
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{
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cutLight.intensity = 0f;
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cutLight.enabled = false;
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}
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}
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// 处理淡出效果
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if (isFadingOut)
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{
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fadeOutTimer += Time.deltaTime;
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float alpha = 1f - (fadeOutTimer / fadeOutDuration);
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if (targetSpriteRenderer != null)
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{
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Color color = targetSpriteRenderer.color;
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color.a = alpha;
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targetSpriteRenderer.color = color;
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}
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// 齿轮也淡出
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SpriteRenderer gearRenderer = GetComponent<SpriteRenderer>();
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if (gearRenderer != null)
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{
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Color gearColor = gearRenderer.color;
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gearColor.a = alpha;
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gearRenderer.color = gearColor;
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}
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if (fadeOutTimer >= fadeOutDuration)
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{
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// 淡出完成后销毁物体
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Destroy(gameObject);
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if (targetSpriteRenderer != null)
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{
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Destroy(targetSpriteRenderer.gameObject);
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}
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}
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}
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}
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private void LoadEdgePointsFromSprite()
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{
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edgePoints = new List<Vector2>();
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originalEdgePoints = new List<Vector2>();
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if (targetSpriteRenderer == null)
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{
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Debug.LogError("targetSpriteRenderer 为空");
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return;
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}
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List<Vector2> shapePoints = new List<Vector2>();
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targetSpriteRenderer.sprite.GetPhysicsShape(0, shapePoints);
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if (shapePoints.Count == 0)
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{
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Debug.LogError("目标Sprite没有物理形状点");
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return;
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}
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float desiredSegmentLength = 0.1f;
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edgePoints.Clear();
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originalEdgePoints.Clear();
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Vector2 center = Vector2.zero;
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foreach (Vector2 point in shapePoints)
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{
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center += point;
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}
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center /= shapePoints.Count;
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for (int i = 0; i < shapePoints.Count; i++)
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{
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Vector2 p1 = targetSpriteRenderer.transform.TransformPoint(shapePoints[i]);
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Vector2 p2 = targetSpriteRenderer.transform.TransformPoint(shapePoints[(i + 1) % shapePoints.Count]);
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Vector2 scaledP1 = center + (p1 - center) * edgePointsScale;
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Vector2 scaledP2 = center + (p2 - center) * edgePointsScale;
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float segmentLength = Vector2.Distance(scaledP1, scaledP2);
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int steps = Mathf.Max(1, Mathf.CeilToInt(segmentLength / desiredSegmentLength));
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for (int s = 0; s < steps; s++)
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{
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float t = (float)s / steps;
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Vector2 interpolated = Vector2.Lerp(scaledP1, scaledP2, t);
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Vector2 originalInterpolated = Vector2.Lerp(p1, p2, t);
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edgePoints.Add(interpolated);
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originalEdgePoints.Add(originalInterpolated);
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}
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}
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if ((edgePoints[0] - edgePoints[edgePoints.Count - 1]).sqrMagnitude > 0.0001f)
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{
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edgePoints.Add(edgePoints[0]);
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originalEdgePoints.Add(originalEdgePoints[0]);
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}
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}
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private void UpdateFollowState(Vector2 mousePos)
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{
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transform.position = mousePos;
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isInTractionMode = false;
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int nearestIndex = FindNearestEdgePointIndex(mousePos, out float dist);
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if (dist < snapDistance)
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{
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currentEdgeIndex = nearestIndex;
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Vector2 prev = edgePoints[WrapIndex(currentEdgeIndex - 1)];
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Vector2 next = edgePoints[WrapIndex(currentEdgeIndex + 1)];
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float distToPrev = Vector2.Distance(mousePos, prev);
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float distToNext = Vector2.Distance(mousePos, next);
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tractionDirection = (distToNext < distToPrev) ? 1 : -1;
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targetPosition = edgePoints[currentEdgeIndex];
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transform.position = targetPosition;
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currentState = State.Traction;
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isInTractionMode = true;
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}
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}
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private void UpdateTractionState(Vector2 mousePos)
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{
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Vector2 gearPos = transform.position - shakeOffset;
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if (Vector2.Distance(mousePos, gearPos) > detachDistance)
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{
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currentState = State.Follow;
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isInTractionMode = false;
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EndCutting();
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return;
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}
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if (!Input.GetMouseButton(0))
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{
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EndCutting();
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return;
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}
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if (!isCutting)
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{
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StartCutting();
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}
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int nextIndex = WrapIndex(currentEdgeIndex + tractionDirection);
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Vector2 from = edgePoints[currentEdgeIndex];
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Vector2 to = edgePoints[nextIndex];
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Vector2 forward = (to - from).normalized;
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Vector2 toMouse = (mousePos - from).normalized;
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float angle = Vector2.SignedAngle(forward, toMouse);
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if (Mathf.Abs(angle) > 120f)
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{
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directionSwitchTimer += Time.deltaTime;
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if (directionSwitchTimer > directionSwitchCooldown)
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{
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tractionDirection *= -1;
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directionSwitchTimer = 0f;
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nextIndex = WrapIndex(currentEdgeIndex + tractionDirection);
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from = edgePoints[currentEdgeIndex];
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to = edgePoints[nextIndex];
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forward = (to - from).normalized;
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}
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}
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else
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{
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directionSwitchTimer = 0f;
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}
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Vector2 targetPoint = GetClosestPointOnSegment(from, to, mousePos);
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Vector2 moveDir = (targetPoint - gearPos);
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float distance = moveDir.magnitude;
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float maxStep = tractionSpeed * Time.deltaTime;
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if (distance <= maxStep)
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{
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targetPosition = targetPoint;
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UpdateCutProgress(from, targetPoint); // 更新切割进度
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if (Vector2.Distance(targetPoint, to) < 0.01f)
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{
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currentEdgeIndex = nextIndex;
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}
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}
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else
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{
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targetPosition = (Vector3)gearPos + (Vector3)(moveDir.normalized * maxStep);
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}
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transform.position = targetPosition + shakeOffset;
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// 使用原始边缘点来记录切割线
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Vector2 originalFrom = originalEdgePoints[currentEdgeIndex];
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Vector2 originalTo = originalEdgePoints[nextIndex];
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Vector2 originalTargetPoint = GetClosestPointOnSegment(originalFrom, originalTo, transform.position - shakeOffset);
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// 记录切割点（带噪声模拟毛糙）
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Vector3 noisyPoint = originalTargetPoint;
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noisyPoint.x += Random.Range(-noiseAmount, noiseAmount);
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noisyPoint.y += Random.Range(-noiseAmount, noiseAmount);
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AddCutPoint(noisyPoint);
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if (sparkVFX != null)
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{
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// 计算从切割点到目标精灵中心的向量
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Vector2 center = targetSpriteRenderer.transform.position;
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Vector2 toCenter = center - (Vector2)originalTargetPoint;
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// 计算法线方向（垂直于切割方向）
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Vector2 normal = Vector2.Perpendicular(moveDir.normalized);
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// 根据切割方向决定法线方向
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if (tractionDirection > 0)
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{
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normal = -normal;
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}
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Vector3 velocity = (Vector3)normal * 10f;
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sparkVFX.SetVector3("Initial Velocity1", velocity);
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}
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}
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private void StartCutting()
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{
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isCutting = true;
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//cutLinePoints.Clear();
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if (cutLineRenderer != null)
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{
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cutLineRenderer.positionCount = 0;
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}
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if (sparkVFX != null)
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{
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sparkVFX.Play();
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}
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}
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private void AddCutPoint(Vector3 point)
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{
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if (timedCutPoints.Count == 0 || Vector3.Distance(timedCutPoints[timedCutPoints.Count - 1].position, point) > 0.05f)
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{
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timedCutPoints.Add(new TimedPoint(point, Time.time));
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// 更新光照位置到最新切点
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if (cutLight != null)
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{
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cutLight.transform.position = point;
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}
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// 把火花特效位置设置到当前切割点
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if (sparkVFX != null)
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{
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sparkVFX.transform.position = point;
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}
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if (timedCutPoints.Count >= 2)
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{
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Vector3 prev = timedCutPoints[timedCutPoints.Count - 2].position;
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Vector3 curr = timedCutPoints[timedCutPoints.Count - 1].position;
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CreateSegment(prev, curr);
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}
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}
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}
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private void UpdateCutLineRenderer()
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{
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if (cutLineRenderer == null) return;
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float currentTime = Time.time;
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List<Vector3> visiblePoints = new List<Vector3>();
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foreach (var timedPoint in timedCutPoints)
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{
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if (currentTime - timedPoint.timeAdded >= cutLineDelay)
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{
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visiblePoints.Add(timedPoint.position);
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}
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else
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{
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}
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}
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cutLineRenderer.positionCount = visiblePoints.Count;
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if (visiblePoints.Count > 0)
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cutLineRenderer.SetPositions(visiblePoints.ToArray());
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}
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private void EndCutting()
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{
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isCutting = false;
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if (sparkVFX != null)
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{
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sparkVFX.Stop();
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}
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}
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private int FindNearestEdgePointIndex(Vector2 pos, out float minDist)
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{
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int nearestIndex = 0;
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minDist = float.MaxValue;
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for (int i = 0; i < edgePoints.Count; i++)
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{
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float dist = Vector2.Distance(pos, edgePoints[i]);
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if (dist < minDist)
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{
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minDist = dist;
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nearestIndex = i;
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}
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}
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return nearestIndex;
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}
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private Vector2 GetClosestPointOnSegment(Vector2 a, Vector2 b, Vector2 p)
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{
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Vector2 ab = b - a;
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float t = Vector2.Dot(p - a, ab) / ab.sqrMagnitude;
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t = Mathf.Clamp01(t);
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return a + ab * t;
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}
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private int WrapIndex(int index)
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{
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if (index < 0) return edgePoints.Count - 2;
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if (index >= edgePoints.Count - 1) return 0;
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return index;
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}
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private void CreateSegment(Vector3 from, Vector3 to)
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{
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GameObject segObj = new GameObject("HeatLineSegment");
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segObj.transform.parent = this.transform;
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LineRenderer segLine = segObj.AddComponent<LineRenderer>();
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segLine.positionCount = 2;
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segLine.SetPosition(0, from);
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segLine.SetPosition(1, to);
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segLine.sortingOrder = 4;
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segLine.material = new Material(Shader.Find("Sprites/Default"));
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segLine.widthCurve = AnimationCurve.Constant(0, 1, cutLineWidth);
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segLine.numCapVertices = 0;
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var segmentController = segObj.AddComponent<HeatLineSegmentController>();
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segmentController.duration = segmentDuration;
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}
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private void CalculateTotalEdgeLength()
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{
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totalEdgeLength = 0f;
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for (int i = 0; i < edgePoints.Count - 1; i++)
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{
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totalEdgeLength += Vector2.Distance(edgePoints[i], edgePoints[i + 1]);
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}
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}
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private void UpdateCutProgress(Vector2 from, Vector2 to)
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{
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cutLength += Vector2.Distance(from, to);
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float progress = cutLength / totalEdgeLength;
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// 记录已切割的边缘点
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cutEdgeIndices.Add(currentEdgeIndex);
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// 检查是否满足切割完成条件
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if (!isCutComplete && progress >= cutCompletionThreshold && progress >= minCutLength)
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||
{
|
||
// 检查是否形成了连续的切割路径
|
||
bool hasContinuousCut = CheckContinuousCut();
|
||
|
||
if (hasContinuousCut)
|
||
{
|
||
isCutComplete = true;
|
||
OnCutComplete();
|
||
}
|
||
}
|
||
}
|
||
|
||
private bool CheckContinuousCut()
|
||
{
|
||
if (cutEdgeIndices.Count < 2) return false;
|
||
|
||
// 将索引转换为有序列表
|
||
List<int> sortedIndices = new List<int>(cutEdgeIndices);
|
||
sortedIndices.Sort();
|
||
|
||
// 检查是否有连续的切割点
|
||
int continuousCount = 1;
|
||
int maxContinuousCount = 1;
|
||
|
||
for (int i = 1; i < sortedIndices.Count; i++)
|
||
{
|
||
if (sortedIndices[i] == sortedIndices[i - 1] + 1)
|
||
{
|
||
continuousCount++;
|
||
maxContinuousCount = Mathf.Max(maxContinuousCount, continuousCount);
|
||
}
|
||
else
|
||
{
|
||
continuousCount = 1;
|
||
}
|
||
}
|
||
|
||
// 如果连续切割点的数量超过总点数的50%，认为形成了有效的切割路径
|
||
return maxContinuousCount >= edgePoints.Count * 0.5f;
|
||
}
|
||
|
||
private void OnCutComplete()
|
||
{
|
||
// 停止切割状态
|
||
isCutting = false;
|
||
isInTractionMode = false;
|
||
enabled = false;
|
||
|
||
// 清理特效
|
||
if (cutLight != null)
|
||
{
|
||
cutLight.enabled = false;
|
||
}
|
||
if (sparkVFX != null)
|
||
{
|
||
sparkVFX.Stop();
|
||
}
|
||
if (cutLineRenderer != null)
|
||
{
|
||
cutLineRenderer.positionCount = 0;
|
||
}
|
||
timedCutPoints.Clear();
|
||
|
||
// 目标倾斜和位移
|
||
if (targetSpriteRenderer != null)
|
||
{
|
||
// 计算随机方向
|
||
float randomAngle = Random.Range(-cutCompleteTiltAngle, cutCompleteTiltAngle);
|
||
Vector2 randomOffset = Random.insideUnitCircle * cutCompleteOffset;
|
||
|
||
// 立即应用倾斜和位移
|
||
targetSpriteRenderer.transform.rotation = Quaternion.Euler(0, 0, randomAngle);
|
||
targetSpriteRenderer.transform.position = originalTargetPosition + (Vector3)randomOffset;
|
||
|
||
// 创建动画序列
|
||
cutCompleteSequence = DOTween.Sequence();
|
||
|
||
// 等待一段时间后开始放大
|
||
cutCompleteSequence.AppendInterval(cutCompleteDelay);
|
||
cutCompleteSequence.Append(targetSpriteRenderer.transform.DOScale(originalTargetScale * cutCompleteScale, scaleUpDuration)
|
||
.SetEase(Ease.OutQuad));
|
||
|
||
// 等待一段时间后开始淡出
|
||
cutCompleteSequence.AppendInterval(fadeOutDelay);
|
||
cutCompleteSequence.Append(targetSpriteRenderer.DOFade(0f, fadeOutDuration));
|
||
|
||
// 齿轮也同时淡出
|
||
SpriteRenderer gearRenderer = GetComponent<SpriteRenderer>();
|
||
if (gearRenderer != null)
|
||
{
|
||
cutCompleteSequence.Join(gearRenderer.DOFade(0f, fadeOutDuration));
|
||
}
|
||
|
||
// 动画完成后销毁物体
|
||
cutCompleteSequence.OnComplete(() => {
|
||
Destroy(gameObject);
|
||
if (targetSpriteRenderer != null)
|
||
{
|
||
Destroy(targetSpriteRenderer.gameObject);
|
||
}
|
||
});
|
||
}
|
||
}
|
||
|
||
private void OnDestroy()
|
||
{
|
||
// 清理DOTween序列
|
||
if (cutCompleteSequence != null)
|
||
{
|
||
cutCompleteSequence.Kill();
|
||
}
|
||
}
|
||
}
|