Unity 镜头拉近效果(带缓冲)

var target : Transform;

var distance : float = 3.0;

var height : float = 1.0;

var damping : float = 5.0;

var smoothRotation : boolean = true;

var rotationDamping : float = 10.0;

var targetLookAtOffset : Vector3; // allows offsetting of camera lookAt, very useful for low bumper heights

var bumperDistanceCheck : float = 2.5; // length of bumper ray

var bumperCameraHeight : float = 1.0; // adjust camera height while bumping

var bumperRayOffset : Vector3; // allows offset of the bumper ray from target origin

function FixedUpdate() {

var wantedPosition = target.TransformPoint(0, height, -distance);

// check to see if there is anything behind the target

var hit : RaycastHit;

var back = target.transform.TransformDirection(-1 * Vector3.forward);

// cast the bumper ray out from rear and check to see if there is anything behind

if (Physics.Raycast(target.TransformPoint(bumperRayOffset), back, hit, bumperDistanceCheck)) {

// clamp wanted position to hit position

wantedPosition.x = hit.point.x;

wantedPosition.z = hit.point.z;

wantedPosition.y = Mathf.Lerp(hit.point.y + bumperCameraHeight, wantedPosition.y, Time.deltaTime * damping);

}

transform.position = Vector3.Lerp(transform.position, wantedPosition, Time.deltaTime * damping);

var lookPosition : Vector3 = target.TransformPoint(targetLookAtOffset);

if (smoothRotation) {

var wantedRotation : Quaternion = Quaternion.LookRotation(lookPosition - transform.position, target.up);

transform.rotation = Quaternion.Slerp(transform.rotation, wantedRotation, Time.deltaTime * rotationDamping);

} else {

transform.rotation = Quaternion.LookRotation(lookPosition - transform.position, target.up);

}

Untiy 动画加速

for (var state : AnimationState in animation)

{

state.speed = 0.5;

}

Unith3D判断物体是否在视角内

public var isRendering:boolean=false;

private var lastTime:float=0;

private var curtTime:float=0;

function Update()

{

isRendering=curtTime!=lastTime?true:false;

lastTime=curtTime;

}

function OnWillRenderObject()

{

curtTime=Time.time;

}

如何判断Unity3D角色动作播放结束

bool AnimationStillPlaying( string animationName )

{

return _animation.IsPlaying(animationName) && _animation[animationName].normalizedTime<1.0f;

}

normalizedTime: 范围0 -- 1, 0是动作开始，1是动作结束

利用Quaternion.LookRotation API 将旋转矩阵转换成四元数

Quaternion.LookRotation

private static Quaternion QuaternionLookRotation(Vector3 forward, Vector3 up)

{

forward.Normalize();

Vector3 vector = Vector3.Normalize(forward);

Vector3 vector2 = Vector3.Normalize(Vector3.Cross(up, vector));

Vector3 vector3 = Vector3.Cross(vector, vector2);

var m00 = vector2.x;

var m01 = vector2.y;

var m02 = vector2.z;

var m10 = vector3.x;

var m11 = vector3.y;

var m12 = vector3.z;

var m20 = vector.x;

var m21 = vector.y;

var m22 = vector.z;

float num8 = (m00 + m11) + m22;

var quaternion = new Quaternion();

if (num8 > 0f)

{

var num = (float)Math.Sqrt(num8 + 1f);

quaternion.w = num * 0.5f;

num = 0.5f / num;

quaternion.x = (m12 - m21) * num;

quaternion.y = (m20 - m02) * num;

quaternion.z = (m01 - m10) * num;

return quaternion;

}

if ((m00 >= m11) && (m00 >= m22))

{

var num7 = (float)Math.Sqrt(((1f + m00) - m11) - m22);

var num4 = 0.5f / num7;

quaternion.x = 0.5f * num7;

quaternion.y = (m01 + m10) * num4;

quaternion.z = (m02 + m20) * num4;

quaternion.w = (m12 - m21) * num4;

return quaternion;

}

if (m11 > m22)

{

var num6 = (float)Math.Sqrt(((1f + m11) - m00) - m22);

var num3 = 0.5f / num6;

quaternion.x = (m10+ m01) * num3;

quaternion.y = 0.5f * num6;

quaternion.z = (m21 + m12) * num3;

quaternion.w = (m20 - m02) * num3;

return quaternion;

}

var num5 = (float)Math.Sqrt(((1f + m22) - m00) - m11);

var num2 = 0.5f / num5;

quaternion.x = (m20 + m02) * num2;

quaternion.y = (m21 + m12) * num2;

quaternion.z = 0.5f * num5;

quaternion.w = (m01 - m10) * num2;

return quaternion;

}

Unity3D判断场景是否加载完成

加载场景时要用

public static AsyncOperation async;

async = Application.LoadLevelAsync(“SelectCarModelScreen”);

　　在加载场景里写

if (MainInterfaceGUIScript.async.isDone == false)

{

//________没有加载完要做的事情如Logo__________________________

}

else

{

//全部加载完成后显示的东东。。

}

　　说明一点这种方法消耗性能哦

物体运动到指定位置

int smooth = 2;

Quaternion target = Quaternion.Euler(0, 0, 0);//目标

// Dampen towards the target rotation

transform.rotation = Quaternion.Slerp(transform.rotation, target, Time.deltaTime * smooth);

　　《《《《《《《《《《《《《《鼠标左键地形物体移动至点击位置》》》》》》》》》》》》》

var moveSpeed:int=5;//player移动速度

var player:Transform;//定义一个人物的Transform

private var endposition : Vector3;

function Start()

{

endposition = player.transform.position;

}

function Update ()

{

if(Input.GetButtonUp("LeftMouse")){ //LeftMouse是在inputManager中设置的，左键值为mouse 0

PlayerMove();

}

var targetposition=player.TransformPoint(Vector3(0,48.8,-30));

transform.position=targetposition;//相机的目标位置,这两句代码的作用是让人物一直处于相机的视野下

if(endposition != player.transform.position){

player.position=Vector3.MoveTowards(player.position,endposition,Time.deltaTime*moveSpeed);

}

function PlayerMove()

{

var cursorScreenPosition:Vector3=Input.mousePosition;//鼠标在屏幕上的位置

var ray:Ray=Camera.main.ScreenPointToRay(cursorScreenPosition);//在鼠标所在的屏幕位置发出一条射线(暂名该射线为x射线)

var hit:RaycastHit;

if(Physics.Raycast(ray,hit)){

if(hit.collider.gameObject.tag=="Terrain"){//设置地形Tag为Terrain

endposition = hit.point;

}

射线测试+使用手势判断是否触碰了某物体

using unityEngine;

using System.Collections;

public class Lu : MonoBehaviour

{

public Camera cam;

// We need to actually hit an object

RaycastHit hitt = new RaycastHit();

// Use this for initialization

void Start()

{

}

// Update is called once per frame

void Update()

{

Ray ray = cam.ScreenPointToRay(Input.mousePosition);

Physics.Raycast(ray, out hitt, 100);

// Debug.DrawLine(cam.transform.position, ray.direction,Color.red);

if (null != hitt.transform)

{

print(hitt.point);//鼠标点击的坐标

}

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　　必须给物体添加碰撞器，比如Box Collider

　　然后在Update中检测手势，此处假设为手指在屏幕上移动

　　主相机的视角（Camera.main）从手指移动处（Input.GetTouch(0).position）发射射线，设置射线发射距离。

　　当射线碰撞到了带有碰撞器的物体，就会存储该物体的信息。

[csharp] view plaincopy

void Update(){

if(Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Moved){

Ray ray = Camera.main.ScreenPointToRay (Input.GetTouch(0).position);

//hit用来存储碰撞物体的信息

RaycastHit hit;

//ray表示射线，hit存储物体的信息,1000为设定射线发射的距离

if(Physics.Raycast (ray, out hit, 1000)){

print(hit.transform.name.ToString());

}

实例来创建对象

//Simple Instantiation of a Prefab at Start

var thePrefab : GameObject;

function Start () {

var instance : GameObject = Instantiate(thePrefab, transform.position, transform.rotation);

}

　　建立JAVA，把代码拖入到空GameJect上，然后把Prefab拖入到公共变量上，就可以了

声音播放坐标转换

var cAudio:AudioClip;

function Update(){

}

function OnMouseDown () {

var screenSpace = Camera.main.WorldToScreenPoint(transform.position);

var offset = transform.position - Camera.main.ScreenToWorldPoint(Vector3(Input.mousePosition.x,transform.position.y, screenSpace.z));

while (Input.GetMouseButton(0)){

var curScreenSpace = Vector3(Input.mousePosition.x, transform.position.y, screenSpace.z);

var curPosition = Camera.main.ScreenToWorldPoint(curScreenSpace) + offset;

if(curPosition!=transform.position){

audio.Stop();

audio.clip = cAudio;

audio.Play();

}

transform.position = curPosition;

yield;

}

射线 (之鼠标点击的坐标)

using UnityEngine;

using System.Collections;

public class Lu : MonoBehaviour

{

public Camera cam;

// We need to actually hit an object

RaycastHit hitt = new RaycastHit();

// Use this for initialization

void Start()

{

}

// Update is called once per frame

void Update()

{

Ray ray = cam.ScreenPointToRay(Input.mousePosition);

Physics.Raycast(ray, out hitt, 100);

// Debug.DrawLine(cam.transform.position, ray.direction,Color.red);

if (null != hitt.transform)

{

print(hitt.point);//鼠标点击的坐标

}

拖拽物体的脚本

function OnMouseDown () {

var screenSpace = Camera.main.WorldToScreenPoint(transform.position);

var offset = transform.position - Camera.main.ScreenToWorldPoint(Vector3(Input.mousePosition.x, Input.mousePosition.y, screenSpace.z));

while (Input.GetMouseButton(0))

{

var curScreenSpace = Vector3(Input.mousePosition.x, Input.mousePosition.y, screenSpace.z);

var curPosition = Camera.main.ScreenToWorldPoint(curScreenSpace) + offset;

transform.position = curPosition;

yield;

}

用指定图片替换鼠标指针

//用指定图片替换鼠标指针

var mouse:Texture;

function Update(){

Screen.showCursor=false;//隐藏鼠标指针

}

function OnGUI{

var msPos=Input.mousePosition;//鼠标的位置

GUI.DrawTexture(Rect(msPos.x,Screen.height-msPos.y,20,20),mouse);

}

Unity 字体描边

private void MakeStroke(Rect position,string txtString,Color txtColor,Color outlineColor,int outlineWidth )

{

position.y-= outlineWidth;

GUI.color=outlineColor;