Unity基礎——Input
1.滑鼠輸入
//我們在這段程式碼最後實現一個基本用滑鼠控制視角的功能
using UnityEngine;
class Script1 : MonoBehaviour
{
[SerializeField]
private float mouseSensitivity = 30f;
private float xRotation = 0f; //當前的旋轉角度
void Update()
{
if (Input.GetButtonDown(0)) //檢測滑鼠左鍵是否按下, 1和2表示右鍵和中鍵
{
//Do something.
Fire();
}
if (Input.GetButtonUp(0)) //檢測滑鼠左鍵是否抬起
{
//Do something.
Ease();
}
if (Input.GetButton(0)) //檢測滑鼠左鍵是否長按
{
//Do something.
Shoot();
}
//如果是GetAxis()而不是GetAxisRaw(),那麼將會返回一個介於[0, 1]的浮點數,後者僅會返回1和0
//在需要實現一些效果時靈活可以使用,比如想要寫一個玩家控制器,且鬆開鍵盤後人物還要滑動一段距離而不是立刻停下,
//就可以使用GetAxis()
float yRotation = mouseSensitivity * Time.deltaTime * GetAxis("Mouse X"); //檢測x軸向的滑鼠移動
float xxRotation = mouseSensitivity * Time.deltaTime * GetAxis("Mouse Y"); //檢測y軸向的滑鼠移動
xRotation -= xxRotation;
Math.Clamp(xRotation, -90f, 90f);
transform.localRotation = Quaternion.Euler(xRotation, 0f, 0f);
transform.Rotate(Vector3.up, yRotation, Space.World);
//或者transform.Rotate(Vector3.up * yRotation, Space.World);
}
}
2.鍵盤輸入
using UnityEngine;
class Script2 : MonoBehaviour
{
void Update()
{
if (Input.GetKeyDown(KeyCode.W)) //檢測某個按鍵是否被按下
{
Move(Direction.Forward);
}
if (Input.GetKeyUp(KeyCode.S)) //檢測某個按鍵是否抬起
{
Move(Direction.Back);
}
if (Input.GetKey(KeyCode.Enter)) //檢測某個鍵是否被長按
{
Confirm();
}
float u = GetAxis("Horizontal"); //預設設定是AD鍵
float v = GetAxis("Vertical"); //預設是WS鍵
}
}
3.練習
//1.建立一個坦克預製體,用鍵盤控制其左右移動,用滑鼠的上下拖動控制其炮管的上下旋轉,用滑鼠的左右拖動模擬炮臺的旋轉;
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UIElements;
using Cursor = UnityEngine.Cursor;
public class InputPractice : MonoBehaviour
{
[SerializeField] private Transform root;
[SerializeField] private Transform body;
public float mouseSensitivity = 100f;
public float moveSpeed = 44f;
private float _rootRotation;
private void Start()
{
Cursor.lockState = CursorLockMode.Locked; //鎖定游標
Cursor.visible = false; //隱藏游標
}
// Update is called once per frame
private void Update()
{
GunBarrel();
Move();
}
private void GunBarrel()
{
var u = Input.GetAxisRaw("Mouse X") * mouseSensitivity * Time.deltaTime;
var v = Input.GetAxisRaw("Mouse Y") * mouseSensitivity * Time.deltaTime;
_rootRotation -= v;
_rootRotation = Mathf.Clamp(_rootRotation, -44f, 44f);
root.transform.localRotation = Quaternion.Euler(_rootRotation, 0f, 0f);
body.Rotate(Vector3.up, u, Space.World);
}
private void Move()
{
var hor = Input.GetAxisRaw("Vertical") * moveSpeed * Time.deltaTime;
var ver = Input.GetAxisRaw("Horizontal") * moveSpeed * Time.deltaTime;
transform.Translate(new Vector3(ver, 0, hor), Space.Self);
}
}
//2.創造一個蠟燭光源(點光源),實現閃爍的效果
using System;
using System.Collections;
using System.Collections.Generic;
using System.Timers;
using UnityEngine;
public class LightPractice : MonoBehaviour
{
public float maxIntensity;
public float minIntensity;
public float nowIntensity;
public float targetIntensity;
private Light _light;
[SerializeField] private float flashingRate;
private void Start()
{
_light = GetComponent<Light>();
nowIntensity = minIntensity;
}
private void Update()
{
if (Mathf.Abs(nowIntensity - minIntensity) < 0.01f) targetIntensity = maxIntensity;
if (Mathf.Abs(nowIntensity - maxIntensity) < 0.01f) targetIntensity = minIntensity;
nowIntensity = Mathf.Lerp(nowIntensity, targetIntensity, flashingRate * Time.deltaTime);
_light.intensity = nowIntensity;
}
}
//3.用直射光模擬日夜變化
using System.Collections;
using System.Collections.Generic;
using System.Numerics;
using UnityEngine;
using Vector3 = UnityEngine.Vector3;
public class LightDayAndNight : MonoBehaviour
{
public float rotateSpeed;
// public float dayTime; //可以自定義一天的時間, 以此封裝一個更加複雜的天氣系統
// Update is called once per frame
private void Update()
{
transform.Rotate(Vector3.left, rotateSpeed * Time.deltaTime, Space.World);
}
}
寫到這裡吧,積少成多~