[Unity3D]Unity3d开发常用代码集合

function OnGUI() {
  GUI.Label(Rect(1,1,100,20),"I'm a Label"); //1
  GUI.Box(Rect(1,21,100,20),"I'm a Box"); //2
  GUI.Button(Rect(1,41,100,20),"I'm a Button"); //3
  GUI.RepeatButton(Rect(1,61,120,20),"I'm a RepeatButton"); //4
  GUI.TextField(Rect(1,81,100,20),"I'm a TextFielld"); //5
  GUI.TextArea(Rect(1,101,100,40),"I'm a TextArea,\nMultiline"); //6
  GUI.Toggle(Rect(1,141,120,20),true,"I'm a Toggle true"); //7
  GUI.Toggle(Rect(1,161,120,20),false,"I'm a Toggle false"); //8
  GUI.Toolbar(Rect(1,181,160,20),-1,["Toolbar","Tool2","Tool3"); //9
  GUI.SelectionGrid(Rect(1,201,190,20),2,["Selection","Grid","select3"],3); //10
  GUI.HorizontalSlider(Rect(1,221,180,20),3.0,0,10.0); //11
  GUI.VerticalScrollbar(Rect(1,241,20,100),3.0,1,0.0,10.0); //12
 
  //13
  GUI.BeginScrollView (Rect (200,10,100,100),Vector2.zero, Rect (0, 0, 220, 200));
  GUI.Label(Rect(0,0,100,20),"I'm a Label");
  GUI.EndScrollView();
  //14
    GUI.Window(0,Rect(200,129,100,100),funcwin,"window");
}
 
function funcwin(windowID:int)
 {
  GUI.DragWindow(Rect(0,0,10000,2000));
 }

2 JS调用DLL

import System;
import System.Runtime.InteropServices;
@DllImport("user32.dll")
public static function MessageBox(Hwnd : int,text : String,Caption : String,iType : int) : int {};
 
function Start()
{
        MessageBox(0, "API Message Box", "Win32 API", 64) ;
}
function Update () {
}

3 物体标签

var target : Transform;  // Object that this label should follow
 
var offset = Vector3.up;    // Units in world space to offset; 1 unit above object by default
var clampToScreen = false;  // If true, label will be visible even if object is off screen
var clampBorderSize = .05;  // How much viewport space to leave at the borders when a label is being clamped
var useMainCamera = true;   // Use the camera tagged MainCamera
var cameraToUse : Camera;   // Only use this if useMainCamera is false
private var cam : Camera;
private var thisTransform : Transform;
private var camTransform : Transform;
 
function Start () {
    thisTransform = transform;
    if (useMainCamera)
        cam = Camera.main;
    else
        cam = cameraToUse;
    camTransform = cam.transform;
}
 
function Update () {
    if (clampToScreen) {
        var relativePosition = camTransform.InverseTransformPoint(target.position);
        relativePosition.z = Mathf.Max(relativePosition.z, 1.0);
        thisTransform.position = cam.WorldToViewportPoint(camTransform.TransformPoint(relativePosition + offset));
        thisTransform.position = Vector3(Mathf.Clamp(thisTransform.position.x, clampBorderSize, 1.0-clampBorderSize),
                                         Mathf.Clamp(thisTransform.position.y, clampBorderSize, 1.0-clampBorderSize),
                                         thisTransform.position.z);
    }
    else {
        thisTransform.position = cam.WorldToViewportPoint(target.position + offset);
    }
}
 
@script RequireComponent(GUIText)

4 unity3d读取保存xml文件

       import System;
import System.Xml;
import System.Xml.Serialization;
import System.IO;
import System.Text;
 
class CeshiData{
var Ceshi1 : String;
var Ceshi2 : String;
var Ceshi3 : float;
var Ceshi4 : int;
}
 
 class UserData
{
 public var _iUser : CeshiData = new CeshiData();
 function UserData() { }
}
 
private var c1 : String;
private var c2 : String;
private var c3 : float;
private var c4 : int;
private var _FileLocation : String;
private var _FileName : String = "CeshiData.xml";
 
var myData : UserData[];
private var tempData : UserData = new UserData();
 
var i : int = 0;
 
var GUISkin1 : GUISkin;
var ShowData : int = 0;
function Awake(){
 _Filelocation＝Application.dataPath;
}
 
function Start(){
 FirstSave();
}
 
function FirstSave(){//初始化XML
 tempData._iUser.Ceshi1 = "?";
 tempData._iUser.Ceshi2 = "?";
 tempData._iUser.Ceshi3 = 0;
 tempData._iUser.Ceshi4 = 0;
 var writer : StreamWriter;
 var t : FileInfo = new FileInfo(_FileLocation+"/"+ _FileName);
 if(!t.Exists)
 {
 writer = t.CreateText();
 _data = SerializeObject(tempData);
 for(i=0;i<10;i++){
 writer.WriteLine(_data);
 }
 writer.Close();
 }
 
}
 
function Save(sc1 : String,sc2 : String,sc3 : float,sc4 : int){//保存数据到指定的XMl里
 
 tempData._iUser.Ceshi1 = sc1;
tempData._iUser.Ceshi2 = sc2;
 tempData._iUser.Ceshi3 = sc3;
 tempData._iUser.Ceshi4 = sc4;
 
 var writer : StreamWriter;
 var t : FileInfo = new FileInfo(_FileLocation+"/"+ _FileName);
 t.Delete();
 writer = t.CreateText();
 _data = SerializeObject(tempData);
 for(i=0;i<10;i++){
 writer.WriteLine(_data);
 }
 writer.Close();
 
}
 
function Load(){//读取保存在XML里的数据
 var r : StreamReader = File.OpenText(_FileLocation+"/"+ _FileName);
var _info : String ;
 for(i=0;i<10;i++){
 _info = r.ReadLine();
 _data＝_info;
 myData[i] = DeserializeObject(_data);
}
 r.Close();
}
 
function OnGUI() {
 GUI.skin = GUISkin1;
 if(GUI.Button(Rect(0,0,100,40),"save")){
 Save("ceshi1","ceshi2",1.23,50);//要显示中文需设定中文字体
}
 if(GUI.Button(Rect(200,0,100,40),"load")){
 Load();
 ShowData = 1;
 }
 if(ShowData == 1){
 GUI.Label(Rect(170,170+53*0,150,50),myData[0]._iUser.Ceshi1);
 GUI.Label(Rect(370,170+53*0,150,50),myData[0]._iUser.Ceshi2);
 GUI.Label(Rect(550,170+53*0,150,50),myData[0]._iUser.Ceshi3 + "");
 GUI.Label(Rect(760,170+53*0,150,50),myData[0]._iUser.Ceshi4 + "");
 
 GUI.Label(Rect(170,170+53*1,150,50),myData[1]._iUser.Ceshi1);
 
 GUI.Label(Rect(370,170+53*2,150,50),myData[2]._iUser.Ceshi2);
 
 GUI.Label(Rect(550,170+53*3,150,50),myData[3]._iUser.Ceshi3 + "");
 
GUI.Label(Rect(760,170+53*4,150,50),myData[4]._iUser.Ceshi4 + "");
 }
}
 
//================================================================================
function UTF8ByteArrayToString(characters : byte[] )
{
 var encoding : UTF8Encoding = new UTF8Encoding();
 var constructedString : String = encoding.GetString(characters);
 return (constructedString);
}
 
//byte[] StringToUTF8ByteArray(string pXmlString)
function StringToUTF8ByteArray(pXmlString : String)
{
 var encoding : UTF8Encoding = new UTF8Encoding();
 var byteArray : byte[] = encoding.GetBytes(pXmlString);
 return byteArray;
}
 
 // Here we serialize our UserData object of myData
//string SerializeObject(object pObject)
function SerializeObject(pObject : Object)
{
 var XmlizedString : String = null;
 var memoryStream : MemoryStream = new MemoryStream();
 var xs : XmlSerializer = new XmlSerializer(typeof(UserData));
 var xmlTextWriter : XmlTextWriter = new XmlTextWriter(memoryStream, Encoding.UTF8);
 xs.Serialize(xmlTextWriter, pObject);
 memoryStream = xmlTextWriter.BaseStream; // (MemoryStream)
 XmlizedString = UTF8ByteArrayToString(memoryStream.ToArray());
 return XmlizedString;
}
 
 // Here we deserialize it back into its original form
 //object DeserializeObject(string pXmlizedString)
function DeserializeObject(pXmlizedString : String)
{
 var xs : XmlSerializer = new XmlSerializer(typeof(UserData));
 var memoryStream : MemoryStream = new MemoryStream(StringToUTF8ByteArray(pXmlizedString));
 var xmlTextWriter : XmlTextWriter = new XmlTextWriter(memoryStream, Encoding.UTF8);
 return xs.Deserialize(memoryStream);
}

5 单击物体弹出对话框

static var WindowSwitch : boolean = false; 
    var mySkin : GUISkin; 
    var windowRect = Rect (200, 80, 240, 100); 
    function OnGUI () 
    { 
       if(WindowSwitch ==  true) 
       { 
          GUI.skin = mySkin; 
            windowRect = GUI.Window (0, windowRect, WindowContain, "测试视窗"); 
      } 
   } 
   function WindowContain (windowID : int) 
   { 
       if (GUI.Button (Rect (70,40,100,20), "关闭视窗")) 
      { 
         WindowSwitch = false; 
      } 
   } 
 
   function OnMouseEnter () 
   { 
       renderer.material.color = Color.red; 
   } 
   function OnMouseDown () 
   { 
      Func_GUIWindow.WindowSwitch = true; 
   } 
   function OnMouseExit () 
   { 
      renderer.material.color = Color.white; 
   }

6 读取txt文本

using UnityEngine;
using System.Collections;
using System.IO;
using System.Text;
 
public class ReadTxt : MonoBehaviour {
string path = "D:\\txtName.txt";
StreamReader smRead = new StreamReader(path,
Encoding.Default); //设置路径
 
string line;
 
void Update () {
 
if ((line = smRead.ReadLine()) != null) {
string[] arrStr = line.Split('|'); //分割符 “|”
id1 = arrStr[0].ToString();
name = arrStr[1].ToString();
sfz = arrStr[2].ToString();
}
}
}

7 截屏

function OnMouseDown() { 
   Application.CaptureScreenshot("Screenshot.png"); 
 }

8 下拉菜单

using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.Text.RegularExpressions;
public class DropDownList : MonoBehaviour
{
    private Rect DropDownRect;          // Size and Location for drop down
    private Transform currentRoot;      // selected object transform
    private Vector2 ListScrollPos;      // scroll list position
    public string selectedItemCaption;  // name of selected item
    private string lastCaption;         // last selected item
    private int guiWidth;               // width of drop list
    private int guiHight;               // hight of drop list
    private bool textChanged;           // if text in text box has changed look for item
    private bool clearDropList;         // clear text box
    public bool DropdownVisible;        // show drop down list
    public bool updateInfo;             // update info window
 
    public Transform root;              // top of the Hierarchy
    public GUISkin dropSkin;            // GUISkin for drop down list
    public int itemtSelected;           // index of selected item
    public bool targetChange;           // text in text box was changed, update list
 
    public class GuiListItem        //The class that contains our list items
    {
        public string Name;         // name of the item
        public int GuiStyle;        // current style to use
        public int UnSelectedStyle; // unselected GUI style
        public int SelectedStyle;   // selected GUI style
        public int Depth;           // depth in the Hierarchy
        public bool Selected;       // if the item is selected
        public bool ToggleChildren; // show child objects in list
 
        // constructors
        public GuiListItem(bool mSelected, string mName, int iGuiStyle, bool childrenOn, int depth)
        {
            Selected = mSelected;
            Name = mName;
            GuiStyle = iGuiStyle;
            ToggleChildren = childrenOn;
            Depth = depth;
            UnSelectedStyle = 0;
            SelectedStyle = 0;
 
        }
        public GuiListItem(bool mSelected, string mName)
        {
            Selected = mSelected;
            Name = mName;
            GuiStyle = 0;
            ToggleChildren = true;
            Depth = 0;
            UnSelectedStyle = 0;
            SelectedStyle = 0;
        }
        public GuiListItem(string mName)
        {
            Selected = false;
            Name = mName;
            GuiStyle = 0;
            ToggleChildren = true;
            Depth = 0;
            UnSelectedStyle = 0;
            SelectedStyle = 0;
        }
 
        // Accessors
        public void enable()// don't show in list
        {
            Selected = true;
        }
        public void disable()// show in list
        {
            Selected = false;
        }
        public void setStlye(int stlye)
        {
            GuiStyle = stlye;
        }
        public void setToggleChildren(bool childrenOn)
        {
            ToggleChildren = childrenOn;
        }
        public void setDepth(int depth)
        {
            Depth = depth;
        }
        public void SetStyles(int unSelected, int selected)
        {
            UnSelectedStyle = unSelected;
            SelectedStyle = selected;
        }
    }
 
    //Declare our list of stuff
    public List MyListOfStuff;
 
    // Initialization
    void Start()
    {
        guiWidth = 400;
        guiHight = 28;
        // Manually position our list, because the dropdown will appear over other controls
        DropDownRect = new Rect(10, 10, guiWidth, guiHight);
        DropdownVisible = false;
        itemtSelected = -1;
        targetChange = false;
        lastCaption = selectedItemCaption = "Select a Part...";
 
        if (!root)
            root = gameObject.transform;
 
        MyListOfStuff = new List(); //Initialize our list of stuff
        // fill the list
        BuildList(root);
        // set GUI for each item in list
        SetupGUISetting();
        // fill the list
        FillList(root);
    }
 
    void OnGUI()
    {
        //Show the dropdown list if required (make sure any controls that should appear behind the list are before this block)
        if (DropdownVisible)
        {
            GUI.SetNextControlName("ScrollView");
            GUILayout.BeginArea(new Rect(DropDownRect.xMin, DropDownRect.yMin + DropDownRect.height, guiWidth, Screen.height * .25f), "", "box");
            ListScrollPos = GUILayout.BeginScrollView(ListScrollPos, dropSkin.scrollView);
            GUILayout.BeginVertical(GUILayout.Width(120));
 
            for (int i = 0; i < MyListOfStuff.Count; i++)
            {
                if (MyListOfStuff[i].Selected && GUILayout.Button(MyListOfStuff[i].Name, dropSkin.customStyles[MyListOfStuff[i].GuiStyle]))
                {
                    HandleSelectedButton(i);
                }
            }
            GUILayout.EndVertical();
            GUILayout.EndScrollView();
            GUILayout.EndArea();
        }
        //Draw the dropdown control
        GUILayout.BeginArea(DropDownRect, "", "box");
        GUILayout.BeginHorizontal();
        string ButtonText = (DropdownVisible) ? "<<" : ">>";
        DropdownVisible = GUILayout.Toggle(DropdownVisible, ButtonText, "button", GUILayout.Width(32), GUILayout.Height(20));
        GUI.SetNextControlName("PartSelect");
        selectedItemCaption = GUILayout.TextField(selectedItemCaption);
        clearDropList = GUILayout.Toggle(clearDropList, "Clear", "button", GUILayout.Width(40), GUILayout.Height(20));
        GUILayout.EndHorizontal();
        GUILayout.EndArea();
    }
 
    void Update()
    {
        //check if text box info changed
        if (selectedItemCaption != lastCaption)
        {
            textChanged = true;
        }
 
        // if text box info changed look for part matching text
        if (textChanged)
        {
            lastCaption = selectedItemCaption;
            textChanged = false;
            // go though list to find item
            for (int i = 0; i < MyListOfStuff.Count; ++i)
            {
                if (MyListOfStuff[i].Name.StartsWith(selectedItemCaption, System.StringComparison.CurrentCultureIgnoreCase))
                {
 
                    MyListOfStuff[i].enable();
                    MyListOfStuff[i].ToggleChildren = false;
                    MyListOfStuff[i].GuiStyle = MyListOfStuff[i].UnSelectedStyle;
                }
                else
                {
                    MyListOfStuff[i].disable();
                    MyListOfStuff[i].ToggleChildren = false;
                    MyListOfStuff[i].GuiStyle = MyListOfStuff[i].UnSelectedStyle;
                }
            }
 
            for (int i = 0; i < MyListOfStuff.Count; ++i)             {                 // check list for item                 int test = string.Compare(selectedItemCaption, MyListOfStuff[i].Name, true);                 if (test == 0)                 {                     itemtSelected = i;                     targetChange = true;                     break; // stop looking when found                 }             }         }         // reset message if list closed and text box is empty         if (selectedItemCaption == "" && !DropdownVisible)         {             lastCaption = selectedItemCaption = "Select a Part...";             ClearList(root);             FillList(root);         }         // if Clear button pushed         if (clearDropList)         {             clearDropList = false;             selectedItemCaption = "";         }     }     public void HandleSelectedButton(int selection)     {         // do the stuff, camera etc         itemtSelected = selection;//Set the index for our currently selected item         updateInfo = true;         selectedItemCaption = MyListOfStuff[selection].Name;         currentRoot = GameObject.Find(MyListOfStuff[itemtSelected].Name).transform;         // toggle item show child         MyListOfStuff[selection].ToggleChildren = !MyListOfStuff[selection].ToggleChildren;         lastCaption = selectedItemCaption;         // fill my drop down list with the children of the current selected object         if (!MyListOfStuff[selection].ToggleChildren)         {             if (currentRoot.childCount > 0)
            {
                MyListOfStuff[selection].GuiStyle = MyListOfStuff[selection].SelectedStyle;
            }
            FillList(currentRoot);
        }
        else
        {
            if (currentRoot.childCount > 0)
            {
                MyListOfStuff[selection].GuiStyle = MyListOfStuff[selection].UnSelectedStyle;
            }
            ClearList(currentRoot);
        }
        targetChange = true;
 
    }
 
    // show only items that are the root and its children
    public void FillList(Transform root)
    {
        foreach (Transform child in root)
        {
            for (int i = 0; i < MyListOfStuff.Count; ++i)
            {
                if (MyListOfStuff[i].Name == child.name)
                {
                    MyListOfStuff[i].enable();
                    MyListOfStuff[i].ToggleChildren = false;
                    MyListOfStuff[i].GuiStyle = MyListOfStuff[i].UnSelectedStyle;
                }
            }
        }
    }
    // turn off children objects
    public void ClearList(Transform root)
    {
        //Debug.Log(root.name);
        Transform[] childs = root.GetComponentsInChildren();
        foreach (Transform child in childs)
        {
            for (int i = 0; i < MyListOfStuff.Count; ++i)             {                 if (MyListOfStuff[i].Name == child.name && MyListOfStuff[i].Name != root.name)                 {                     MyListOfStuff[i].disable();                     MyListOfStuff[i].ToggleChildren = false;                     MyListOfStuff[i].GuiStyle = MyListOfStuff[i].UnSelectedStyle;                 }             }         }     }     // recursively build the list so the hierarchy is in tact     void BuildList(Transform root)     {         // for every object in the thing we are viewing         foreach (Transform child in root)         {             // add the item             MyListOfStuff.Add(new GuiListItem(false, child.name));             // if it has children add the children             if (child.childCount > 0)
            {
                BuildList(child);
            }
        }
    }
 
    public void ResetDropDownList()
    {
        selectedItemCaption = "";
        ClearList(root);
        FillList(root);
    }
 
    public string RemoveNumbers(string key)
    {
        return Regex.Replace(key, @"\d", "");
    }
 
    // sets the drop list elements to use the correct GUI skin custom style
    private void SetupGUISetting()
    {
        // set drop down list gui
        int depth = 0;
        // check all the parts for hierarchy depth
        for (int i = 0; i < MyListOfStuff.Count; ++i)         {             GameObject currentObject = GameObject.Find(MyListOfStuff[i].Name);             Transform currentTransform = currentObject.transform;             depth = 0;             if (currentObject.transform.parent == root) // if under root             {                 if (currentObject.transform.childCount > 0)
                {
                    MyListOfStuff[i].GuiStyle = depth;
                    MyListOfStuff[i].UnSelectedStyle = depth;
                    MyListOfStuff[i].SelectedStyle = depth + 2;
                }
                else
                {
                    MyListOfStuff[i].GuiStyle = depth + 1;
                    MyListOfStuff[i].UnSelectedStyle = depth + 1;
                    MyListOfStuff[i].SelectedStyle = depth + 1;
                }
 
                MyListOfStuff[i].Depth = depth;
 
            }
            else // if not under root find depth
            {
                while (currentTransform.parent != root)
                {
                    ++depth;
                    currentTransform = currentTransform.parent;
                }
                MyListOfStuff[i].Depth = depth;
                // set gui basied on depth
                if (currentObject.transform.childCount > 0)
                {
                    MyListOfStuff[i].GuiStyle = depth * 3;
                    MyListOfStuff[i].UnSelectedStyle = depth * 3;
                    MyListOfStuff[i].SelectedStyle = (depth * 3) + 2;
                }
                else
                {
                    MyListOfStuff[i].GuiStyle = depth * 3 + 1;
                    MyListOfStuff[i].UnSelectedStyle = depth * 3 + 1;
                    MyListOfStuff[i].SelectedStyle = depth * 3 + 1;
                }
            }
        }
    }
}