66 lines
1.9 KiB
C#
66 lines
1.9 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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[RequireComponent(typeof(LineRenderer))]
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public class Cable : MonoBehaviour
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{
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public Transform start;
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public Transform end;
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public int resolution = 10;
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public float dstMin = 0.1f;
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public float dstMax = 1.0f;
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public float forceMin = 0.1f;
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public float forceMax = 1.0f;
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public int k = 10;
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private LineRenderer lineRenderer;
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private Vector3[] points;
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private void Start()
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{
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lineRenderer = GetComponent<LineRenderer>();
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points = new Vector3[resolution];
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for (int i = 0; i < resolution; i++)
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{
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float t = i / (float)(resolution - 1);
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points[i] = Vector3.Lerp(start.position, end.position, t);
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}
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lineRenderer.positionCount = resolution;
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}
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private void FixedUpdate()
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{
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UpdateRope();
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for (int i = 0; i < resolution; i++)
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{
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lineRenderer.SetPosition(i, points[i] + Vector3.forward * -.3f);
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}
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}
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void UpdateRope()
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{
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float t = Mathf.InverseLerp(dstMin, dstMax, (start.position - end.position).magnitude);
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float F = Mathf.Lerp(forceMin, forceMax, t);
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points[0] = start.position;
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points[points.Length - 1] = end.position;
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for (int ik = 0; ik < k; ik++)
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{
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for (int i = 1; i < points.Length - 1; i++)
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{
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Vector3 offsetPrev = (points[i - 1] - points[i]);
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Vector3 offsetNext = points[i + 1] - points[i];
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Vector3 velocity = offsetPrev.normalized * offsetPrev.magnitude * F +
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offsetNext.normalized * offsetNext.magnitude * F;
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points[i] += velocity * Time.deltaTime / k;
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}
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for (int i = 1; i < points.Length - 1; i++)
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{
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points[i] += Vector3.down * 9.8f * Time.deltaTime / k;
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}
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}
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}
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} |