Unity3d工具方法小集

1、获取垂直水平方向上的输入：

float moveHorizontal = Input.GetAxis("Horizontal");

float moveVertical = Input.GetAxis("Vertical");

2、给刚体一个力：

Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);

GetComponent<Rigidbody>().AddForce(movement * speed * Time.deltaTime);

3、摄像头45度俯视角：

Camera:

Position:  x()   y()    z(-)

Rotate:    x()  y()    z()

Scale:     x()   y()    z()

4、摄像机跟随：

public GameObject player;

private Vector3 offset;

// Use this for initialization

void Start () {

    //摄像机与跟随物体的初始相对位置

    offset = transform.position - player.transform.position;

}

// Update is called once per frame

void LateUpdate () {

    //跟随物体的位置加上相对位置

    transform.position = player.transform.position + offset;

}

5、物体自己旋转(固定时间，跟幀率无关)：

void Update () {

    transform.Rotate(new Vector3(, , ) * Time.deltaTime);

}

6、检测碰撞（且碰撞后对方消失）：

private void OnTriggerEnter(Collider other)

{

    //这里的TAG为对方物体Tag

    if (other.gameObject.CompareTag(TAG))

    {

        //要让对方消失，对方物体要设置为碰撞触发器（即IsTrigger属性要为true）

        other.gameObject.SetActive(false);

    }

}

7、设置Button里的Text值

GetComponentInChildren<Text>().text = "";

8、移除刚体上的力：

GetComponent<Rigidbody>().velocity = Vector3.zero;

GetComponent<Rigidbody>().angularVelocity = Vector3.zero;

9、背景滾动：

using UnityEngine;

public class BGScroller : MonoBehaviour {

    public float scrollSpeed;

    public float tileSizeZ;

    private Vector3 startPosition;

    void Start () {

        startPosition = transform.position;

    }

    void Update () {

        float newPosition = Mathf.Repeat(Time.time * scrollSpeed, tileSizeZ);

        transform.position = startPosition + Vector3.forward * newPosition;

    }

}

10、出边界后销毀：

using UnityEngine;

public class DestoryByBoundary : MonoBehaviour {

    void OnTriggerExit(Collider other)

    {

        Destroy(other.gameObject);

    }

}

11、把prefabs放入场景中：

Instantiate(object, position, rotation);

12、一定时间后销毁：

using UnityEngine;

public class DestoryByTime : MonoBehaviour {

    public float lifetime;

    void Start () {

        Destroy(gameObject, lifetime);

    }

}

13、游戏开始等待一定时间，过程中时间间隔，每一关时间间隔：

void Start()

{

    StartCoroutine (SpawnWaves());

}

IEnumerator SpawnWaves()

{

    yield return new WaitForSeconds(startWait);

    while (true) {

        playerObject.GetComponent<PlayerController>().SetFireByLevel(level);

        for (int i = ; i < hazardCount; i++)

        {

            GameObject hazard = hazards[Random.Range(, hazards.Length)];

            Vector3 spawnPosition = new Vector3(Random.Range(-spawnValues.x, spawnValues.x), spawnValues.y, spawnValues.z);

            Quaternion spawnRotation = Quaternion.identity;

            Instantiate(hazard, spawnPosition, spawnRotation);

            yield return new WaitForSeconds(spawnWait);

        }

        level++;

        yield return new WaitForSeconds(waveWait);

        if (gameOver)

        {

            restartButton.SetActive(true);

            restart = true;

            break;

        }

    }

}

14、加载场景：

SceneManager.LoadScene("_Scenes/Main", LoadSceneMode.Single);

15、物体倾斜：

rb.rotation = Quaternion.Euler(0.0f, 0.0f, rb.velocity.x * -tilt);

16、随机旋转：

GetComponent<Rigidbody>().angularVelocity = Random.insideUnitSphere * tumble;

tumble在5左右。

17、开火触模板：

using UnityEngine;

using UnityEngine.EventSystems;

public class SimpleTouchAreaButton : MonoBehaviour, IPointerDownHandler, IPointerUpHandler

{

    private bool touched;

    private int pointerID;

    private bool canFire;

    void Awake()

    {

        touched = false;

        canFire = false;

    }

    public void OnPointerDown(PointerEventData eventData)

    {

        if (!touched)

        {

            touched = true;

            pointerID = eventData.pointerId;

            canFire = true;

        }

    }

    public void OnPointerUp(PointerEventData eventData)

    {

        if (eventData.pointerId == pointerID)

        {

            canFire = false;

            touched = false;

        }

    }

    public bool CanFire()

    {

        return canFire;

    }

}

18、位置方向触模板：

using UnityEngine;

using UnityEngine.EventSystems;

public class SimpleTouchPad : MonoBehaviour, IPointerDownHandler, IDragHandler, IPointerUpHandler

{

    public float smoothing;

    private Vector2 origin;

    private Vector2 direction;

    private Vector2 smoothDirection;

    private bool touched;

    private int pointerID;

    void Awake()

    {

        direction = Vector2.zero;

        touched = false;

    }

    public void OnPointerDown(PointerEventData eventData)

    {

        if (!touched)

        {

            touched = true;

            pointerID = eventData.pointerId;

            //set our start point

            origin = eventData.position;

        }

    }

    public void OnDrag(PointerEventData eventData)

    {

        if (eventData.pointerId == pointerID)

        {

            //compare the difference between our start point and current pointer pos

            Vector2 currentPosition = eventData.position;

            Vector2 directionRaw = currentPosition - origin;

            direction = directionRaw.normalized;

        }

    }

    public void OnPointerUp(PointerEventData eventData)

    {

        if (eventData.pointerId == pointerID)

        {

            //reset everything

            direction = Vector2.zero;

            touched = false;

        }

    }

    public Vector2 GetDirection()

    {

        smoothDirection = Vector2.MoveTowards(smoothDirection, direction, smoothing);

        return smoothDirection;

    }

}

19、延迟重复执行：

InvokeRepeating("Fire", delay, fireRate);

20、向目标靠近：

using System.Collections;

using UnityEngine;

public class EvasiveManeuver : MonoBehaviour {

    public float dodge;

    public float smoothing;

    public float tilt;

    public Vector2 startWait;

    public Vector2 maneuverTime;

    public Vector2 maneuverWait;

    public Boundary boundary;

    private Transform playTransform;

    private float currentSpeed;

    private float targetManeuver;

    private Rigidbody rb;

    void Start () {

        rb = GetComponent<Rigidbody>();

        GameObject playerObject = GameObject.FindGameObjectWithTag("Player");

        if (playerObject != null) {

            playTransform = playerObject.transform;

        }

        currentSpeed = rb.velocity.z;

        StartCoroutine(Evade());

    }

    IEnumerator Evade()

    {

        yield return new WaitForSeconds(Random.Range(startWait.x, startWait.y));

        while(true)

        {

            targetManeuver = Random.Range(, dodge) * -Mathf.Sign(transform.position.x);

            if (playTransform != null)

            {

                targetManeuver = playTransform.position.x;

            }

            yield return new WaitForSeconds(Random.Range(maneuverTime.x, maneuverTime.y));

            targetManeuver = ;

            yield return new WaitForSeconds(Random.Range(maneuverWait.x, maneuverWait.y));

        }

    }

    void FixedUpdate () {

        float newManeuver = Mathf.MoveTowards(rb.velocity.x, targetManeuver, Time.deltaTime * smoothing);

        rb.velocity = new Vector3(newManeuver, 0.0f, currentSpeed);

        rb.position = new Vector3(

            Mathf.Clamp(rb.position.x, boundary.xMin, boundary.xMax),

            0.0f,

            Mathf.Clamp(rb.position.z, boundary.zMin, boundary.zMax)

        );

        rb.rotation = Quaternion.Euler(0.0f, 0.0f, rb.velocity.x * tilt);

    }

}

21、给按钮绑定事件：

巴特西

Unity3d工具方法小集

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