Mathf.MoveTowards

public static float MoveTowards(float current, float target, float maxDelta);

Parameters

current		The current value.
target		The value to move towards.
maxDelta		The maximum change that should be applied to the value.

Description 描述

Moves a value current towards target.

This is essentially the same as Mathf.Lerp but instead the function will ensure that the speed never exceeds maxDelta. Negative values of maxDelta pushes the value away from target.

using UnityEngine;

public class Example : MonoBehaviour
{
    float currStrength;
    float maxStrength;
    float recoveryRate;

    void Update()
    {
        currStrength = Mathf.MoveTowards(currStrength, maxStrength, recoveryRate * Time.deltaTime);
    }
}