Unity 倒计时器教程
倒计时器是一个虚拟时钟,从设定时间计数到 0。
要在 Unity 中制作倒计时器,您需要创建一个脚本来存储倒计时的时间量并以 00:00 格式显示。
计时器将采用以下格式:
- 天:小时:分钟:秒:毫秒
- 小时:分钟:秒:毫秒
- 分钟:秒:毫秒
- 秒:毫秒
- 加上以上所有内容,但没有毫秒
脚步
要在 Unity 中制作倒计时器,请按照以下步骤操作:
SC_CountdownTimer.cs
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class SC_CountdownTimer : MonoBehaviour
{
public enum CountdownFormatting { DaysHoursMinutesSeconds, HoursMinutesSeconds, MinutesSeconds, Seconds };
public CountdownFormatting countdownFormatting = CountdownFormatting.MinutesSeconds; //Controls the way the timer string will be formatted
public bool showMilliseconds = true; //Whether to show milliseconds in countdown formatting
public double countdownTime = 600; //Countdown time in seconds
Text countdownText;
double countdownInternal;
bool countdownOver = false;
// Start is called before the first frame update
void Start()
{
countdownText = GetComponent<Text>();
countdownInternal = countdownTime; //Initialize countdown
}
void FixedUpdate()
{
if (countdownInternal > 0)
{
countdownInternal -= Time.deltaTime;
//Clamp the timer value so it never goes below 0
if (countdownInternal < 0)
{
countdownInternal = 0;
}
countdownText.text = FormatTime(countdownInternal, countdownFormatting, showMilliseconds);
}
else
{
if (!countdownOver)
{
countdownOver = true;
Debug.Log("Countdown has finished running...");
//Your code here...
}
}
}
string FormatTime(double time, CountdownFormatting formatting, bool includeMilliseconds)
{
string timeText = "";
int intTime = (int)time;
int days = intTime / 86400;
int hoursTotal = intTime / 3600;
int hoursFormatted = hoursTotal % 24;
int minutesTotal = intTime / 60;
int minutesFormatted = minutesTotal % 60;
int secondsTotal = intTime;
int secondsFormatted = intTime % 60;
int milliseconds = (int)(time * 100);
milliseconds = milliseconds % 100;
if (includeMilliseconds)
{
if (formatting == CountdownFormatting.DaysHoursMinutesSeconds)
{
timeText = string.Format("{0:00}:{1:00}:{2:00}:{3:00}:{4:00}", days, hoursFormatted, minutesFormatted, secondsFormatted, milliseconds);
}
else if (formatting == CountdownFormatting.HoursMinutesSeconds)
{
timeText = string.Format("{0:00}:{1:00}:{2:00}:{3:00}", hoursTotal, minutesFormatted, secondsFormatted, milliseconds);
}
else if (formatting == CountdownFormatting.MinutesSeconds)
{
timeText = string.Format("{0:00}:{1:00}:{2:00}", minutesTotal, secondsFormatted, milliseconds);
}
else if (formatting == CountdownFormatting.Seconds)
{
timeText = string.Format("{0:00}:{1:00}", secondsTotal, milliseconds);
}
}
else
{
if (formatting == CountdownFormatting.DaysHoursMinutesSeconds)
{
timeText = string.Format("{0:00}:{1:00}:{2:00}:{3:00}", days, hoursFormatted, minutesFormatted, secondsFormatted);
}
else if (formatting == CountdownFormatting.HoursMinutesSeconds)
{
timeText = string.Format("{0:00}:{1:00}:{2:00}", hoursTotal, minutesFormatted, secondsFormatted);
}
else if (formatting == CountdownFormatting.MinutesSeconds)
{
timeText = string.Format("{0:00}:{1:00}", minutesTotal, secondsFormatted);
}
else if (formatting == CountdownFormatting.Seconds)
{
timeText = string.Format("{0:00}", secondsTotal);
}
}
return timeText;
}
}
- 创建一个新的 UI 文本,方法是右键单击“层次结构视图”->“UI”->“文本”并为其命名 'Countdown'
- 将 'Countdown' 矩形变换对齐方式更改为左上角,枢轴更改为 (0, 1),Pos X 和 Pos Y 更改为 5,宽度更改为 300,高度更改为 60
- 将 'Countdown' 文本字体样式更改为粗体,将字体大小更改为 34,将对齐方式更改为左中,将颜色更改为白色
- 将 SC_CountdownTimer 脚本附加到具有文本组件的'Countdown' 对象。
您会注意到该脚本有一些变量:
- 倒计时格式 控制字符串格式中将包含哪些时间单位。
- Show Milliseconds 控制是否应显示毫秒计数。
- 倒计时时间 是以秒为单位的倒计时持续时间,例如,值 600 对应于 10 分钟。
按 Play 后,您应该注意到填充了倒计时器的文本:
在 0 秒时,脚本将在控制台中打印一行,表示倒计时已完成,使用脚本的该部分添加您自己的功能。