WheelFrictionCurve.stiffness

描述

extremumValue 和 asymptoteValue 值的乘数（默认值为 1）。

改变摩擦力的刚度。将此值设置为零 将完全禁用车轮的所有摩擦力。

通常在运行时修改 stiffness 来模拟各种地面材质。（例如，在草地上行驶时 降低刚度）。 另请参阅：WheelCollider.GetGroundHit。

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    public WheelCollider wheel;

    void Start()
    {
        wheel = GetComponent<WheelCollider>();
    }

    // When attached to the WheelCollider, modifies tire friction based on
    // static friction of the ground material.
    void FixedUpdate()
    {
        WheelHit hit;
        if (wheel.GetGroundHit(out hit))
        {
            WheelFrictionCurve fFriction = wheel.forwardFriction;
            fFriction.stiffness = hit.collider.material.staticFriction;
            wheel.forwardFriction = fFriction;
            WheelFrictionCurve sFriction = wheel.sidewaysFriction;
            sFriction.stiffness = hit.collider.material.staticFriction;
            wheel.sidewaysFriction = sFriction;
        }
    }
}