Unity3D Notes

How To use Prefabs in Unity3d

2011-07-31T21:39:00.003+05:30

Prefabs

How To Add New Prefab .?

Steps:

A new, empty Prefab. It cannot be instanced until you fill it with a GameObject.

To fill the Prefab, you use a GameObject that you've created in the scene.

Choose Assets->Create->Prefab from the menu bar and name your new Prefab.
In Hierarchy View, select the GameObject you wish to make into a Prefab.
Drag & drop the GameObject from the Hierarchy onto the new Prefab in Project View.

After you have performed these steps, the GameObject and all its children have been copied into the Prefab data. The Prefab can now be re-used in multiple instances. The original GameObject in the Hierarchy has now become an instance of the Prefab.

To Modify Prefab :

Reconnect will discard all differences from the source Prefab.
Apply will copy all differences into the source Prefab (and therefore, all other Prefab instances)

Imported Prefabs Looks like :

Video on Prefab :

--
Vivek P shah
Game developer in Unity3d
Reference : WWW.unity3d.com

Light Prototype: Faking Dynamic Global Illumination in Unity

2011-07-20T08:42:00.005+05:30

Unity 3 have given us Deferred lighting so in this light prototype we'll see if I can create a lighting scheme close to Running Man while being completely dynamic appose to completely static.

Pre-Calculated lighting in Running Man

Hangar level in Running Man, lighting is completely static, created using pre-calculated lightmaps, looks good but is as dynamic as hardened concrete!

When we created Running Man in Unity 2.6 we relied on baking all lights into static lightmaps for performance; No doubt baked light looks fantastic, as it allows for calculating advanced and accurate global illumination as well as ambient occlusion, but with the obvious downsides of forcing lighting to be completely static as well as increasing the size of our builds (Mb) due to all the scene lightmaps.
Sure we would all love to have real-time Global Illumination like CryEngine 3 ... but experience tells me that we can get 80% of the way by faking it and the last 20% is a real nice to have at the moment, I guess we just have to wait till Unity integrates real-time GI in Unity. :)

Lets begin!  This prototype is created with what is available in Unity 3.3:
    •    Spot Lights
    •    What I'll generally use to create primary light sources as spotlights provides a lot of control and is perfect for casting shadows on key environment elements and dynamic meshes.
    •    Point Lights
    •    Used to simulate in-direct lighting from primary light sources as well as setting up very crude bounce light areas in the environment.
    •    Ambient Light (Render Settings)
    •    I'll use this option to apply a discrete color value to the scene to simulating a general base-ambiance in the environment, which then dependent on which colors that dominates the lighting scheme and how much light is available. The idea is to adjust this value on the fly to help simulate the global ambience in a given scene.
    •    Screen Space Ambient Occlusion (Image-Effect)
    •    I'll rely on applying a bit of detail to the lighting setup by using the SSAO image-effect on the camera. In Running Man SSAO was pre-calculated during bake-time which made it completely static.
    •    Bloom and Flares
    •    The goal is not to polish the hell out of this light prototype so other tricks such as using color correction image-effects, particles etc. is not part of this first journey into creating advanced dynamic lighting in Unity. But we got to have a bit of glow on the light fixtures - its so easy to setup and looks great.

Step 1: Setting up primary light

Spot lights and light fixtures are placed logically throughout the environment.
Step 2: Setting up primary ambient light

Next I add a point light near the primary light to fake/simulate in-direct light on the nearby environment.
Step 3: Setting up secondary ambient lights

To simulate a bit of bounce light (including simple color bleeding) I add a few small point lights where needed.
Step 4: Setting up Scene Ambient Light

Next its time to set the global ambient light color (Render Settings) to help simulate a base-ambiance in areas not directly influenced by primary- or ambiance light.
Step 5: Setting up Screen Space Ambient Occlusion

The Screen Space Ambient Occlusion image-effect is applied to the camera which brings out a lot of details near meshes in the environment
Step 6: Setting up Bloom and Flares

Final touch to bring the light fixtures to life is to apply the Bloom and Flares image-effect with moderate "fancy" settings.
Step 7: Final result

         when looking at the combined effect that all the above steps achieves, then its great to think about that all this is completely dynamic and do not have to bake/render for hours each time you need to change something in the scene.

Faking Dynamic Gl_obal Illumination in Unity
    •    Warning:
    •    Deferred lighting is calculated based on how many pixels the light influence pr. frame, so be sure to set resolution if you native default resolution is too high!
Take the light prototype for a spin and see the final result for yourself - all part of our commitment to letting you guys and girls in behind the scenes of developing Interstellar Marines, the best we can.
    •    Warning:
    •    This Prototype is not optimized for optimal performance so if you're "playing" on a small notebook, please do not expect the best frame-rates in the world!
I hope you've enjoyed this small preview into our efforts of making everything dynamic in Interstellar Marines, including lighting.
--

How to use Physics.Raycast in your game

2011-07-10T16:22:00.004+05:30

Physics.Raycast

Syntax :

static function Raycast (origin : Vector3, direction : Vector3, distance : float = Mathf.Infinity, layerMask : int = kDefaultRaycastLayers) : bool

Parameters


origin	The starting point of the ray in world coordinates.
direction	The direction of the ray.
distance	The length of the ray
layerMask	A Layer mask that is used to selectively ignore colliders when casting a ray.

Returns

bool - True when the ray intersects any collider, otherwise false.

Description

Casts a ray against all colliders in the scene.

Use in Game :

First we need to declare it like this in our Script .

void Update ()
{
  ray = Camera.main.ScreenPointToRay(Input.mousePosition);
  if(Physics.Raycast(ray, out hit)&& Input.GetButtonDown("Fire1"))
  {
    Debug.Log(hit.collider.tag);
    if(PreviousClick == 0)
     {
      if(hit.collider.tag == "Character")
       {
        Debug.Log("in if " + hit.collider.tag);
        PreviousClick = 1;
        sourceTag = hit.collider.name;
    x_currPos =(int(hit.collider.gameObject.transform.position.x / tileSizeAdjustment);
    y_currPos = (int)(hit.collider.gameObject.transform.position.y / tileSizeAdjustment);
        hit.collider.gameObject.renderer.material.color = Color.red;
        //hit.collider.gameObject.renderer.material.color = Color.green;
         Debug.Log(sourceTag);
          }
          else if(hit.collider.tag == "PlaceHolder")
       {
          Debug.Log("Can't Move object ov there");
          return;
       }
   }
}

Now you can Download Code From  Here

Vivek P Shah

Game Developer in Unity3d And Cocos2d

Skype : viveks2012

How To upload Score on WebServer

2011-07-10T16:06:00.002+05:30

To Save score on WebServerWe require Basics of WWW

WWW Inherits from IDisposable

Simple access to web pages.

This is a small utility module for retrieving the contents of URLs.

You start a download in the background by calling WWW(url) which returns a new WWW object.

You can inspect the isDone property to see if the download has completed or yield the download object to automatically wait until it is (without blocking the rest of the game).

Use it if you want to get some data from a web server for integration with a game such as highscore lists or calling home for some reason. There is also functionality to create textures from images downloaded from the web and to stream & load new web player data files.

The WWW class can be used to send both GET and POST requests to the server. The WWW class will use GET by default and POST if you supply a postData parameter.

See Also: WWWForm for a way to build valid form data for the postData parameter.

Note: http://, https:// and file:// protocols are supported on iPhone. ftp:// protocol support is limited to anonymous downloads only. Other protocols are not supported.

Note: The security sandbox present in web-player builds prevents you from accessing content not hosted the server where the webplayer is hosted.

// Get the latest webcam shot from outside "Friday's" in Times Square
var url = "http://images.earthcam.com/ec_metros/ourcams/fridays.jpg";

function Start () {

// Start a download of the given URL
    var www : WWW = new WWW (url);

// Wait for download to complete
    yield www;

// assign texture
    renderer.material.mainTexture = www.texture; 

}

Variables

text	Returns the contents of the fetched web page as a string (Read Only).
bytes	Returns the contents of the fetched web page as a byte array (Read Only).
error	Returns an error message if there was an error during the download (Read Only).
texture	Returns a Texture2D generated from the downloaded data (Read Only).
movie	Returns a MovieTexture generated from the downloaded data (Read Only).
isDone	Is the download already finished? (Read Only)
progress	How far has the download progressed (Read Only).
uploadProgress	How far has the upload progressed (Read Only).
url	The URL of this WWW request (Read Only).
assetBundle	Streams an AssetBundle that can contain any kind of asset from the project folder.
threadPriority	Priority of AssetBundle decompression thread.

Constructors

WWW	Creates a WWW request with the given URL.

Functions

GetAudioClip	Returns a AudioClip generated from the downloaded data (Read Only).
LoadImageIntoTexture	Replaces the contents of an existing Texture2D with an image from the downloaded data.
LoadUnityWeb	Loads the new web player data file.

Class Functions

EscapeURL	Encodes string into an URL-friendly format.
UnEscapeURL	Decodes string from an URL-friendly format.
LoadFromCacheOrDownload	Loads an assetBundle from the cache, or downloads it, in case it is not cached.

For that We need To Define Two URL to Save Game Data like :

public class UploadScoreWebService : MonoBehaviour 

{

 public string
addScoreUrl="http://192.28.700.59:8008/Xyz/ScoreService";

 public string highscoreUrl =
"http://localhost/game/display.php";

 public string highscore_url;

}

Now to Post Score we need

public void postScore(string email, int score , string
Name)

{

 string
url = "http://192.28.700.59:8008/Xyz/ScoreService";

 string highscore_url =
addScoreUrl + "uemail=" + WWW.EscapeURL(email) +
"&uscore=" + score + "&udatetime =" + cur_time +
"&uname=" + Name;

 string highscore_url =
"http://172.18.100.79:8088/ewave/ScoreService?act=AddScore&uname=chirag&uemail=chirag@ewaveinida.com&uscore=50&udatetime=24-JAN-2011%2011:00";

   WWW www = new WWW(highscore_url);

   StartCoroutine(WaitForRequest(www));

   WWWForm form = new WWWForm();

   form.AddField("uname", Name);

   form.AddField("uscore", score);

   form.AddField("udatetime",
cur_time);

   form.AddField("uemail", email);

   Debug.Log("Request URL :
" + highscore_url);  

   string highscore_url =
addScoreUrl + "email=" + WWW.EscapeURL(email) +
"&score=" + score + "time =" + cur_time +
"name=" + Name;

   WWW hs_post = new
WWW(highscore_url); 

   Debug.Log("HighScore URL :
" + highscore_url);

   WWW(highscore_url);

}

   IEnumerator WaitForRequest(WWW www)

{

       yield return www;

       // check for errors      

       if (www.error == null)

{

           Debug.Log("WWW Ok! -
result: " + www.data);

       } else {

           Debug.Log("WWW Error:
"+ www.error);

}

}

}

You can Download Script from Here

Vivek P Shah

Game Developer in Unity3d and Cocos2d

Skype : viveks2012

Instantiate Prefab in Your Game Tutorial

2011-07-10T14:02:00.003+05:30

A Prefab is a type of asset -- a reusable GameObject stored in Project View. Prefabs can be inserted into any number of scenes, multiple times per scene. When you add a Prefab to a scene, you create an instance of it. All Prefab instances are linked to the original Prefab and are essentially clones of it. No matter how many instances exist in your project, when you make any changes to the Prefab you will see the change applied to all instances.
For Detail You Can Refer from Here
Now Lets See How to use it in Game ..
Just made one sample project in Unity3d . Like
Steps :
1) Go Into File
2) Select New Project
3) Now Create new Scene
4) Take An Empty Object
5) Now From Assets -> Create New -> Prefab ..

Now Create New C# Script name PrefabDemo.cs
Now write in that :

using UnityEngine;

using System.Collections;

public class preafabDemo : MonoBehaviour

{

public GameObject enemy; 

Now For instantiate Object You Need to write :

// Use this for initialization

void Start () 

{

      Instantiate(enemy,new
Vector3(3,10,0),Quaternion.identity);

}

So For Continue Instantiate of Object

// Update is called once per frame

void Update () 

{

Instantiate(enemy,new
Vector3(Random.value * 23.0f,Random.value*25.0f,Random.value *
24.0f),Quaternion.identity);

 
}

}

So ,From This You can instantiate Object in your game continue .

You Can Download Source Code From Here

--
Vivek P Shah
Game Developer In Unity3d And Cocos2d
Skype : viveks2012

Particle system in unity3d

2011-07-09T14:49:00.007+05:30

Particle Systems

Particles are essentially 2D images rendered in 3D space. They are primarily used for effects such as smoke, fire, water droplets, or leaves.You can use a Particle Emitter and Renderer together if you want static particles. Particle Systems in Unity are used to make clouds of smoke, steam, fire and other atmospheric effects. Particle Systems work by using one or two Textures & drawing them many times, creating a chaotic effect.
A Particle System is made up of three separate Components :
1) Particle Emitter
2) Particle Animator
3) Particle Renderer

Ellipsoid Particle Emitter

The Ellipsoid Particle Emitter spawns particles inside a sphere. Use the Ellipsoid property below to scale & stretch the sphere.

The Ellipsoid Particle Emitter Inspector

Properties


Emit	If enabled, the emitter will emit particles.
Min Size	The minimum size each particle can be at the time when it is spawned.
Max Size	The maximum size each particle can be at the time when it is spawned.
Min Energy	The minimum lifetime of each particle, measured in seconds.
Max Energy	The maximum lifetime of each particle, measured in seconds.
Min Emission	The minimum number of particles that will be spawned every second.
Max Emission	The maximum number of particles that will be spawned every second.
World Velocity	The starting speed of particles in world space, along X, Y, and Z.
Local Velocity	The starting speed of particles along X, Y, and Z, measured in the object's orientation.
Rnd Velocity	A random speed along X, Y, and Z that is added to the velocity.
Emitter Velocity Scale	The amount of the emitter's speed that the particles inherit.
Tangent Velocity	The starting speed of particles along X, Y, and Z, across the Emitter's surface.
Simulate In World Space	If enabled, the particles don't move when the emitter moves. If false, when you move the emitter, the particles follow it around.
One Shot	If enabled, the particle numbers specified by min & max emission is spawned all at once. If disabled, the particles are generated in a long stream.
Ellipsoid	Scale of the sphere along X, Y, and Z that the particles are spawned inside.
MinEmitterRange	Determines an empty area in the center of the sphere - use this to make particles appear on the edge of the sphere.

How To Add It in your Scene :
Steps :
1) add a Particle System
2) .

Particle Animator

Particle Animators move your particles over time, you use them to apply wind, drag & color cycling to your particle systems.

The Particle Animator Inspector

Properties


Does Animate Color	If enabled, particles cycle their color over their lifetime.
Color Animation	The 5 colors particles go through. All particles cycle over this - if some have a shorter life span than others, they will animate faster.
World Rotation Axis	An optional world-space axis the particles rotate around. Use this to make advanced spell effects or give caustic bubbles some life.
Local Rotation Axis	An optional local-space axis the particles rotate around. Use this to make advanced spell effects or give caustic bubbles some life.
Size Grow	Use this to make particles grow in size over their lifetime. As randomized forces will spread your particles out, it is often nice to make them grow in size so they don't fall apart. Use this to make smoke rise upwards, to simulate wind, etc.
Rnd Force	A random force added to particles every frame. Use this to make smoke become more alive.
Force	The force being applied every frame to the particles, measure relative to the world.
Damping	How much particles are slowed every frame. A value of 1 gives no damping, while less makes them slow down.
Autodestruct	If enabled, the GameObject attached to the Particle Animator will be destroyed when all particles disappear.

Particle Renderer

The Particle Renderer renders the Particle System on screen.

The Particle Renderer Inspector

Properties


Materials	Reference to a list of Materials that will be displayed in the position of each individual particle.
Camera Velocity Scale	The amount of stretching that is applied to the Particles based on Camera movement.
Stretch Particles	Determines how the particles are rendered.
Billboard	The particles are rendered as if facing the camera.
Stretched	The particles are facing the direction they are moving.
SortedBillboard	The particles are sorted by depth. Use this when using a blending material.
VerticalBillboard	All particles are aligned flat along the X/Z axes.
HorizontalBillboard	All particles are aligned flat along the X/Y axes.
Length Scale	If Stretch Particles is set to Stretched, this value determines how long the particles are in their direction of motion.
Velocity Scale	If Stretch Particles is set to Stretched, this value determines the rate at which particles will be stretched, based on their movement speed.
UV Animation	If either of these are set, the UV coordinates of the particles will be generated for use with a tile animated texture. See the section on Animated Textures below.
X Tile	Number of frames located across the X axis.
Y Tile	Number of frames located across the Y axis.
Cycles	How many times to loop the animation sequence.

--
Vivek Shah
Game Developer in Unity3d

How To Save Game Data Local on Same Machine

2011-07-04T11:54:00.001+05:30

While Unity is used for more than games, it's clearly targeted at 3D games. So savegames (and loadgames) should be addressed, even if it's in the form of a tutorial. But it's not even in Unity's FAQ.

Right now UT's answer is with PlayerPrefs, but from what I've seen of it, it's clearly not an optimal solution. PlayerPrefs doesn't really give you much support for doing multiple save games, complex data structures, etc.

I imagine "support for savegames" in Unity would be:

1. An easy way to tag GOs "saveable", including script state.
2. A way to save those off to a file, and load it back in.

Even if this functionality were only on a per-script basis it would save a lot of code maintenance.

And it seems like the editor *almost* already supports all this, minus script state.

Seems feasable to me

However, barring complete automatic save and load, I'd love to know how to roll your own. Specifically, something like this:

1. A piece of code that can crawl the Hierarchy. (I've looked for code examples of this and have not seen it)
2. A way to inspect objects and what variables they contain.

What I want to avoid is having to more save and load code every time I write a new script.

Can anyone point me to some code samples to do this kind of stuff?

2nd Solution :

In Declaration you need to declare like this

public class MainmenuScript : MonoBehaviour

{

DataPersistance dataPersistance; /// Persistance Object : Read/Write to file.

GameConfig gameConfig=null; ///object to for game settings info.

}

First You need to Declare this in your Start

void Start ()
    {
        dataPersistance = new DataPersistance();
        gameConfig = dataPersistance.LoadInfo();
        if(starts > 0)
        screenID = gameConfig.screenID;
        starts++;
    }

Now Wherever you want to save that u need to write there this code

PlayerPrefs.SetFloat("difficultyLevel", difficultyLevel);

Debug.Log(PlayerPrefs.GetFloat("difficultyLevel"));

gameConfig.MaxPlayerNo++;

gameConfig.CurrentPlayer = CurrentPlayer = gameConfig.MaxPlayerNo;

gameConfig.fxLevel = soundFXValue;

gameConfig.volumeLevel = soundVolume;gameConfig.difficultyLevel = difficultyLevel;

gameConfig.playerName = stringToEdit;

Debug.Log("name is :"+gameConfig.playerName);

gameConfig.score = score;dataPersistance.SaveInfo(gameConfig);

So that GameConfig will help you to save data on your local machine .. and for more i have share code just go through it ..

You Can Down Load Code From Here.

--
Vivek P Shah
Game Developer in Unity3d and Cocos2d

How To Create MENU Of Game

2011-06-29T08:51:00.002+05:30

For That We need to Declare Number of System File Like :

using UnityEngine;
using System.Collections;
using System.Runtime.Serialization.Formatters.Binary;

using System;
using System.Runtime.Serialization;
using System.Reflection;
using System.Text;
using System.IO;

Then Declere Number of ScreenID which U need In Your Game Like :

public class MainMenu: MonoBehaviour
{
    enum ScreenIDS
    {
        LOGOSCREEN ,//0
        LOADINGSCREEN,//1
        MAINMENU,//2
        CAREER,//3

        LOAD,//4
        CHOOSEPLAYER,//5

        CAREERINFO1,//6
        CAREERINFO2,//7
        CAREERINFO3,//8

        CUSTOMIZE,//9

        FREESURF,//10
        SOCIALNETWORKING,//11
        OPTION,//12

        LOADPLAYER,//13

        BOARDS ,//14
        CLOTHS,//15
        MAKEOVER,//16

        LOADEDCAREERSTATE,//17
        LEVEL1,//18
        SAVEQUITCAREER,//19
        LEVEL2,//20
        LEVEL3,//21


        FSLEVEL1,//22
        FSLEVEL2,//23
        FSLEVEL3,//24

        //NEXTBOARD,//25
        //NEXTDRESS,//26
        STATGAME,//25
        QUIT,//26
        QUIT1,//27
        LOADCAREER//28

    };

Now Declere Number Veriable You Need In Your Game Menu :

float currentTimer = 0.0f;
    float currentDir = -1.0f;
    float LOADINGSCREENTIME = 5.0f;
    float COMPANYLOGOSCREEN = 10.0f;
    byte Camflag = 0;
    int loadGameLevel = 1;
    public byte TextureCount;
    Vector3 CamPosition;
    DataPersistance dataPersistance; /// Persistance Object : Read/Write to file.
    GameConfig gameConfig=null; ///object to for game settings info.
    public PlayersData playerData = new PlayersData(); ///PlayerNames and PlayerScores
    public PlayersData leveldata = new PlayersData(); // Levelname and Current Level
    public PlayersData Boarddata = new PlayersData();
    public PlayersData Dressddata = new PlayersData();
    public PlayersData Hairdata = new PlayersData();

Now Go Into Void Start () And Declere it like :

void Start ()
    {
        ////Load GameConfiguration....
        dataPersistance = new DataPersistance();
        gameConfig = dataPersistance.LoadInfo();

        if(starts > 0)
            screenID = gameConfig.screenID;

        starts++;
        //soundFXValue=gameConfig.fxLevel;
        //soundVolume=gameConfig.volumeLevel;
        //difficultyLevel=gameConfig.difficultyLevel;
        levelname = gameConfig.LevelName;
        stringToEdit = gameConfig.playerName;
        level = gameConfig.Level;
        board = gameConfig.Board;
        dress = gameConfig.Dress;
        hair = gameConfig.Hair;
        ////Debug.Log("Player Name = " +stringToEdit);
        screenID = 0;
        MaxPlayer = playerData.LoadPlayerData();
        level = playerData.LoadPlayerLevelInfo();
        dress = playerData.LoadDressInfo();
        hair = playerData.LoadHairInfo();
        board = playerData.LoadBoardInfo();

    }

So After All That You Need To Declere main Class Void Init GUI () Like :

public void initGui()
    {
        //GUI.Label (new Rect (screenWidth, screenHeight, 100, 20), "Brain Vita Main Menu");
        switch (screenID)
        {
            case 0:    //ScreenIDS.LOGOSCREEN
                GUI.Box (new Rect (0, 0, 480, 320), "", GameSkin.GetStyle("splashscreen"));
                currentTimer += Time.deltaTime;
                if(COMPANYLOGOSCREEN< currentTimer)
                {
                    currentTimer = 0.0f;
                    screenID++;
                }
                break;

        case 1: //ScreenIDS.LOADINGSCREEN
                GUI.Box (new Rect (0, 0, 480, 320), "", GameSkin.GetStyle("loadingscreen"));
            /*    int j=0;
                for(float i = 0.0f; i< currentTimer; i=i+0.4f)
                {
                    GUI.Button (new Rect ( 80 + (j++ * 20), 190, 20, 23), "",GameSkin.GetStyle("SmallStar"));
                }            */

                currentTimer += Time.deltaTime;

                if(LOADINGSCREENTIME< currentTimer)
                {
                    currentTimer = 0.0f;
                    screenID++;
                }
                break;

        case 2: // ScreenIDS.MAINMENU
                //First menu to be displayed to user.
            GUI.Box (new Rect (0, 0, 480, 320), "", GameSkin.GetStyle("MainMenu"));

            if(GUI.Button (new Rect ( 330, 20, 151, 100), "",GameSkin.GetStyle("career")))
                    {
                        screenID = (int)ScreenIDS.CHOOSEPLAYER;
                    }
            if(GUI.Button (new Rect (340, 90, 129, 97), "",GameSkin.GetStyle("freesurf")))
                    {
                        screenID = (int)ScreenIDS.FREESURF;
                    }
            if(GUI.Button (new Rect (320, 130, 150, 137), "",GameSkin.GetStyle("load")))
                    {
                        screenID = (int)ScreenIDS.LOAD;
                    }
            if(GUI.Button (new Rect (300, 195, 173, 99), "",GameSkin.GetStyle("setting")))
                    {
                        screenID = (int)ScreenIDS.OPTION;
                        //Debug.Log("On Click oF Stting Button"+screenID);
                    }
            if(GUI.Button (new Rect (215, 255, 214, 67), "",GameSkin.GetStyle("buy")))
                    {
                        //screenID = (int)ScreenIDS.OPTION;
                    }
            if(GUI.Button (new Rect (440, 280, 36, 34), "",GameSkin.GetStyle("About")))
                    {
                        //screenID = (int)ScreenIDS.OPTION;
                    }
            break;

        case 3://ScreenIDS.CAREER
                GUI.Box (new Rect (0, 0, 480, 320), "", GameSkin.GetStyle("MainMenu"));
                if(GUI.Button (new Rect ( 330, 30, 102, 72), "",GameSkin.GetStyle("selectplayer")))
                    {
                        screenID = (int)ScreenIDS.CHOOSEPLAYER;
                    }
                if(GUI.Button (new Rect (285, 90, 198, 77), "",GameSkin.GetStyle("customplayer")))
                    {
                        Camflag = 1;
                        screenID = (int)ScreenIDS.BOARDS;
                    }
                if(GUI.Button (new Rect (300, 150, 182, 114), "",GameSkin.GetStyle("loadplayer")))
                    {
                        screenID = (int)ScreenIDS.LOADPLAYER;
                    }
                if(GUI.Button (new Rect (300, 255,98, 71), "",GameSkin.GetStyle("back")))
                    {
                        screenID = (int)ScreenIDS.MAINMENU;
                    }
                if(GUI.Button (new Rect (400, 255, 91, 75), "",GameSkin.GetStyle("ok")))
                    {

                            rotationCount = (byte)playerData.LoadBoardInfo();
                                rotationCount = (byte)playerData.LoadBoardInfo();
                rotationCount = (byte)playerData.LoadBoardInfo();
                 FSLEVEL = playerData.LoadPlayerLevelInfo();
                     screenID = (int)ScreenIDS.STATGAME;
                    }
                break;

        case 4: // ScreenIDS.LOAD

                GUI.Box (new Rect (0, 0, 480, 320), "", GameSkin.GetStyle("LoadCareer"));
                MaxPlayer = playerData.LoadPlayerData();
                //Debug.Log("MaxPlayer = "+MaxPlayer);
                for(int i=0 ;i <MaxPlayer; i++)
                {
                    if(GUI.Button(new Rect (200, nameplace, 228,20), (i+1) + " ) " + "\""+PlayerPrefs.GetString("PlayerName"+i)+"\"   "+PlayerPrefs.GetString                                        ("PlayerCreateDate"+i)+"\"   "+PlayerPrefs.GetInt("Score"+i)+"\"   "+PlayerPrefs.GetInt("Level"+i),GameSkin.GetStyle("Player")))
                    {
                        //Debug.Log("Button Clicked.................................................................................................................");
                    }
                    nameplace = nameplace + 20;
                    if(i == (MaxPlayer - 1))
                    {
                        nameplace = 30;
                    }
                }

                rotationCount = (byte)playerData.LoadBoardInfo();
                if(GUI.Button (new Rect (50, 150,98, 71), "",GameSkin.GetStyle("back")))
                    {
                        screenID = (int)ScreenIDS.MAINMENU;
                    }
                if(GUI.Button (new Rect (120, 150, 91, 75), "",GameSkin.GetStyle("ok")))
                    {
                        screenID = (int)ScreenIDS.LOADEDCAREERSTATE;
                    }

case 5: //ScreenIDS.CHOOSEPLAYER
                GUI.Box (new Rect (0, 0, 480, 320), "", GameSkin.GetStyle("ChoosePlayer"));
                GUI.Box (new Rect (95, 130, 102, 72), "", GameSkin.GetStyle("selectplayer"));
                GUI.Box (new Rect (30, 20, 67, 214), "", GameSkin.GetStyle("Male"));
                GUI.Box (new Rect (190, 20, 61, 202), "", GameSkin.GetStyle("Female"));

                if(GUI.Button (new Rect (90, 200, 43, 18), "",GameSkin.GetStyle(MaleplayerSelection)))
                    {
                        MaleplayerSelection = "lefthandclick";
                        FemaleplayerSelection = "righthand";
                        //screenID = (int)ScreenIDS.CHOOSEPLAYER;
                    }
                if(GUI.Button (new Rect (155, 200, 39,19), "",GameSkin.GetStyle(FemaleplayerSelection)))
                    {
                        MaleplayerSelection = "lefthand";
                        FemaleplayerSelection = "righthandclick";
                        //screenID = (int)ScreenIDS.CAREER;
                    }
                if(GUI.Button (new Rect (325, 220,98, 71), "",GameSkin.GetStyle("back")))
                    {
                        screenID = (int)ScreenIDS.MAINMENU;
                    }
                if(GUI.Button (new Rect (400, 215,91, 75), "",GameSkin.GetStyle("ok")))
                    {
                        playerData.SavePlayerInfo(stringToEdit,100,FSLEVEL);
                        screenID = (int)ScreenIDS.CAREERINFO1;
                        //Debug.Log("Player Name = " +stringToEdit);
                    }
                GUI.Box (new Rect (0, 230, 334, 81), "", GameSkin.GetStyle("EnterPlayerName"));
                stringToEdit= GUI.TextField (new Rect (185,243,150,60), stringToEdit, 25,GameSkin.GetStyle("textfield"));

                break;
        case 6: // career mode info1
            GUI.Box (new Rect (0, 0, 480, 320), "", GameSkin.GetStyle("info1"));

                currentTimer += Time.deltaTime;
                if(LOADINGSCREENTIME< currentTimer)
                    {
                        currentTimer = 0.0f;
                        screenID++;
                    }
            /*    if(GUI.Button (new Rect (380, 250, 50, 30), "NEXT",GameSkin.GetStyle("BackButton")))
                    {
                        Camflag = 1;
                        screenID = (int)ScreenIDS.CAREER3;
                    } */
                break;
        case 7: //career mode info2

               // GUI.Box (new Rect (0, 0, 480, 320), "Localize", GameSkin.GetStyle("box"));
                GUI.Box (new Rect (0, 0, 480, 320), "", GameSkin.GetStyle("info2"));

                currentTimer += Time.deltaTime;
                if(LOADINGSCREENTIME< currentTimer)
                    {
                        currentTimer = 0.0f;
                        screenID++;
                    }
            /*    if(GUI.Button (new Rect (380, 250, 50, 30), "NEXT",GameSkin.GetStyle("BackButton")))
                    {
                        Camflag = 1;
                        screenID = (int)ScreenIDS.CAREER3;
                    } */
                break;

        case 8: //career mode info3

               // GUI.Box (new Rect (0, 0, 480, 320), "Localize", GameSkin.GetStyle("box"));
                GUI.Box (new Rect (0, 0, 480, 320), "", GameSkin.GetStyle("info3"));

                currentTimer += Time.deltaTime;

                if(LOADINGSCREENTIME< currentTimer)
                {
                    currentTimer = 0.0f;
                    screenID = (int)ScreenIDS.CAREER;
                }

                    break;

        case 9:
                    break;
        case 10: //ScreenIDS.FREESURFMENU
            GUI.Box (new Rect (0, 0, 480, 320), "", GameSkin.GetStyle("BoxPlay2"));
if(GUI.Button (new Rect (25, 240,98, 71), "",GameSkin.GetStyle("back")))
                {
                        screenID = (int)ScreenIDS.MAINMENU;
                }
                if(GUI.Button (new Rect (140, 235,91, 75), "",GameSkin.GetStyle("ok")))
                {
                        FSLEVEL = playerData.LoadPlayerLevelInfo();
                        //Debug.Log(" FSLEVEL = "+FSLEVEL);
                        screenID = (int)ScreenIDS.CHOOSEPLAYER;
                }
}

So if You want to Download Full Code Then You Can Download if from Here
--
Vivek P Shah
Game Developer in Unity3d and Cocos2d

GUI Basics For The Unity3d

2011-06-26T11:25:00.003+05:30

Making Controls with UnityGUI

UnityGUI controls make use of a special function called OnGUI(). The OnGUI() function gets called every frame as long as the containing script is enabled - just like the Update() function.

Code :

function OnGUI ()

{
    // Make a background box
       GUI.Box (Rect (10,10,100,90), "Loader Menu");
   if (GUI.Button (Rect (20,40,80,20), "Level 1"))

{
        Application.LoadLevel (1);
      }
   // Make the second button.
   if (GUI.Button (Rect (20,70,80,20), "Level 2"))

      {
        Application.LoadLevel (2);
      }
}

It Will Look Like This :

Now Controls in GUI :

How To add Lable in GUI ?

-->  CODE :

function OnGUI ()

{
   GUI.Label (Rect (0,0,100,50), "This is the text string for a Label Control");
 }

If you Want to Add Texture2D then it calls like

--> var controlTexture : Texture2D;

function OnGUI ()

{
    GUI.Label (Rect (0,0,100,50), controlTexture);
}

How To Add Button in GUI Function ??

--> Code :

 var icon : Texture2D;

function OnGUI ()

{
    if (GUI.Button (Rect (10,10, 100, 50), icon))

{
   print ("you clicked the icon");
       }

    if (GUI.Button (Rect (10,70, 100, 20), "This is text"))

{
  print ("you clicked the text button");
       }
}

---

Vivek P Shah

Game Developer in Unity3d

Basics Of Collision and Collider Cont ...

2011-06-26T11:19:00.000+05:30

Wheel Collider

The Wheel Collider is a special collider for grounded vehicles. It has built-in collision detection, wheel physics, and a slip-based tire friction model. It can be used for objects other than wheels, but it is specifically designed for vehicles with wheels.

Properties


Center	Center of the wheel in object local space.
Radius	Radius of the wheel.
Suspension Distance	Maximum extension distance of wheel suspension, measured in local space. Suspension always extends downwards through the local Y-axis.
Suspension Spring	The suspension attempts to reach a Target Position by adding spring and damping forces.
Spring	Spring force attempts to reach the Target Position. A larger value makes the suspension reach the Target Position faster.
Damper	Dampens the suspension velocity. A larger value makes the Suspension Spring move slower.
Target Position	The suspension's rest distance along Suspension Distance. 0 maps to fully extended suspension, and 1 maps to fully compressed suspension. Default value is zero, which matches the behavior of a regular car's suspension.
Mass	The Mass of the wheel.
Forward/Sideways Friction	Properties of tire friction when the wheel is rolling forward and sideways. See Wheel Friction Curves section below.

--
Vivek P Shah
Game Developer in Unity3d
Source : www.unity3d.com

Basics Of Collision and Collider

2011-06-26T10:43:00.000+05:30

Colliders :

Colliders are another kind of component that must be added alongside the Rigidbody in order to allow collisions to occur. If two Rigidbodies bump into each other, the physics engine will not calculate a collision unless both objects also have a Collider attached. Collider-less Rigidbodies will simply pass through each other during physics simulation.

Add a Collider with the Component->Physics menu. View the Component Reference page of any individual Collider for more specific information:

Types Of Colliders :

1) Box Collider - primitive shape of a cube
2) Sphere Collider - primitive shape of a sphere
3) Capsule Collider - primitive shape of a capsule
4) Mesh Collider - creates a collider from the object's mesh, cannot collide with another Mesh Collider
5) Wheel Collider - specifically for creating cars or other moving vehicles

Box Collider

The Box Collider is a basic cube-shaped collision primitive.

Properties


Material	Reference to the Physic Material that determines how this Collider interacts with others.
IsTrigger	If enabled, this Collider is used for triggering events, and is ignored by the physics engine.
Size	The size of the Collider in the X, Y, Z directions.
Center	The position of the Collider in the object's local space.

Sphere Collider

The Sphere Collider is a basic sphere-shaped collision primitive.

Properties


Material	Reference to the Physic Material that determines how this Collider interacts with others.
IsTrigger	If enabled, this Collider is used for triggering events, and is ignored by the physics engine.
Radius	The size of the Collider.
Center	The position of the Collider in the object's local space.

Capsule Collider

The Capsule Collider is made of two half-spheres joined together by a cylinder. It is the same shape as the Capsule primitive.

Properties


Material	Reference to the Physic Material that determines how this Collider interacts with others.
Is Trigger	If enabled, this Collider is used for triggering events, and is ignored by the physics engine.
Radius	The radius of the Collider's local width.
Height	The total height of the Collider.
Direction	The axis of the capsule's lengthwise orientation in the object's local space.
Center	The position of the Collider in the object's local space

Mesh Collider

The Mesh Collider takes a Mesh Asset and builds its Collider based on that mesh. It is far more accurate for collision detection than using primitives for complicated meshes. Mesh Colliders that are marked as Convex can collide with other Mesh Colliders.

Properties


Material	Reference to the Physic Material that determines how this Collider interacts with others.
Is Trigger	If enabled, this Collider is used for triggering events, and is ignored by the physics engine.
Mesh	Reference to the Mesh to use for collisions.
Smooth Sphere Collisions	When this is enabled, collision mesh normals are smoothed. You should enable this on smooth surfaces eg. rolling terrain without hard edges to make sphere rolling smoother.
Convex	If enabled, this Mesh Collider will collide with other Mesh Colliders. Convex Mesh Colliders are limited to 255 triangles.


			Cont .....

Basics Of Physics In Unity3d

2011-06-26T10:24:00.000+05:30

Physics

Unity has NVIDIA PhysX physics engine built-in. This allows for unique emergent behaviour and is generally very cool.

Basics

To put an object under physics control, simply add a Rigidbody to it. When you do this, the object will be affected by gravity, and can collide with other objects in the world.

Rigidbodies

Rigidbodies are physically simulated objects. You use Rigidbodies for things that the player can push around, eg. crates or loose objects, or you can move Rigidbodies around directly by adding forces to it by scripting.

Rigidbody

Rigidbodies enable your GameObjects to act under the control of physics. The Rigidbody can receive forces and torque to make your objects move in a realistic way. Any GameObject must contain a Rigidbody to be influenced by gravity, act under added forces via scripting, or interact with other objects through the NVIDIA PhysX physics engine.

Properties


Mass	The weight of the object in kilograms. It is recommended to make masses not more or less than 100 times that of other Rigidbodies.
Drag	How much air resistance affects the object when moving from forces. 0 means no air resistance, and infinity makes the object stop moving immediately.
Angular Drag	How much air resistance affects the object when rotating from torque. 0 means no air resistance, and infinity makes the object stop rotating immediately.
Use Gravity	If enabled, the object is affected by gravity.
Is Kinematic	If enabled, the object will not be driven by the physics engine, and can only be manipulated by its Transform. This is useful for moving platforms or if you want to animate a Rigidbody that has a HingeJoint attached.
Interpolate	Try one of the options only if you are seeing jerkiness in your Rigidbody's movement.
None	No Interpolation is applied.
Interpolate	Transform is smoothed based on the Transform of the previous frame.
Extrapolate	Transform is smoothed based on the estimated Transform of the next frame.
Freeze Rotation	If enabled, this GameObject will never rotate based on collisions or forces added via script -- it will only rotate when using transform.Rotate().
Collision Detection	Used to prevent fast moving objects from passing through other objects without detecting collisions.
Discrete	Use Discreet collision detection against all other colliders in the scene. Other colliders will use Discreet collision detection when testing for collision against it. Used for normal collisions (This is the default value).
Continuous	Use Discrete collision detection against dynamic colliders (with a rigidbody) and continuous collision detection against static MeshColliders (without a rigidbody). Rigidbodies set to Continuous Dynamic will use continuous collision detection when testing for collision against this rigidbody. Other rigidbodies will use Discreet Collision detection. Used for objects which the Continuous Dynamic detection needs to collide with. (This has a big impact on physics performance, leave it set to Discrete, if you don't have issues with collisions of fast objects)
Continuous Dynamic	Use continuous collision detection against objects set to Continuous and Continuous Dynamic Collision. It will also use continuous collision detection against static MeshColliders (without a rigidbody). For all other colliders it uses discreet collision detection. Used for fast moving objects.

Now How To Add Rigid Body To Your Selected Object :

You can add a Rigidbody to your selected object from
Components->Physics->Rigidbody in the menubar.
Now your object is physics-ready; it will fall under gravity and can receive forces via scripting, but you may need to add a Collider or a Joint to get it to behave exactly how you want.

So From This You Can add Physics to your Object.
For Physics Collider Is Important So will Come in Next POST ...

--
Vivek P Shah
Game Developer in Unity3d
Source : www.unity3d.com

Advanced Unity Physics Tutorial - Now for Unity 3.0!

2011-06-24T09:40:00.000+05:30

Physics In Unity3d :

Now You Can Insert Physics By using proper Coding and Object from Unity 3d ..

For More Information Refer this Video ..

Also you can Go through this Basic Tutorial for Unity Physics ..

--
Vivek P Shah
Game Developer in Unity3d and Cocos2d
Reference : YouTube.com

2011-06-23T13:29:00.001+05:30

Prefabs

A Prefab is a type of asset -- a reusable Game Object stored in Project View. Prefabs can be inserted into any number of scenes, multiple times per scene. When you add a Prefab to a scene, you create an instance of it. All Prefab instances are linked to the original Prefab and are essentially clones of it. No matter how many instances exist in your project, when you make any changes to the Prefab you will see the change applied to all instances.

How to Add New Prefab in Menu :
A new, empty Prefab. It cannot be instanced until you fill it with a GameObject.

To fill the Prefab, you use a GameObject that you've created in the scene.

Choose Assets->Create->Prefab from the menu bar and name your new Prefab.
In Hierarchy View, select the GameObject you wish to make into a Prefab.
Drag & drop the GameObject from the Hierarchy onto the new Prefab in Project View.

After you have performed these steps, the Game Object and all its children have been copied into the Prefab data. The Prefab can now be re-used in multiple instances. The original Game Object in the Hierarchy has now become an instance of the Prefab.

Now Drag object into that Prefab .

How to Modify Properties of prefab :

This allows you to modify Prefab instances to make them unique from their source Prefabs without breaking the Prefab link.

Now How this imported prefab look likes

Vivek p Shah

Game Developer in Unity3d and Cocos2d

Reference : www.unity3d.com