47 lines
1.4 KiB
C#
47 lines
1.4 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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public class VerletParticle
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{
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public Vector3 position; // 当前帧位置
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public Vector3 previousPosition; // 上一帧位置
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public float mass = 1f; // 默认质量
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public bool isLocked; // 是否锁定
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public VerletParticle(Vector3 position)
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{
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this.position = position;
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this.previousPosition = position; // 初始时，上一帧的位置与当前相同
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this.isLocked = false; // 默认粒子不锁定
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}
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// Apply force to the particle (affects velocity)
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public void ApplyForce(Vector3 force)
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{
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if (!isLocked)
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{
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Vector3 velocity = position - previousPosition;
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Vector3 airResistance = -velocity * 0.3f;
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//Vector3 damping = velocity * 0.02f; // 额外的速度衰减
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velocity += (force + airResistance) * Time.deltaTime / mass; // 考虑质量
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previousPosition = position;
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position += velocity;
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}
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}
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// Update the particle's position using Verlet integration
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public void UpdatePosition()
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{
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if (!isLocked)
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{
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Vector3 velocity = position - previousPosition; // 计算当前速度
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previousPosition = position; // 更新上一帧位置
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position += velocity; // 用速度更新当前位置
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}
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}
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}
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