Unity 3D Script Note

1.Shoot,Throw|Instantiate

var speed = 3.0;

var grenadePrefab:Transform; 



function Update () 

{

    //find out if a fire button is pressed

    if(Input.GetButtonDown("Fire1"))

    {

        if(Collisions.GRENADE_AMMO > 0)

        {

            //create the prefab

            var grenade = Instantiate(grenadePrefab, transform.position, Quaternion.identity);

        

            //add force to the prefab

            grenade.rigidbody.AddForce(transform.forward * 2000);

            

            Collisions.GRENADE_AMMO --;

　　　　　　　//modify the gui text.

            GameObject.Find("g_Count").guiText.text = ""+Collisions.GRENADE_AMMO;//"" is to convent the int to string

            print("YOU NOW HAVE "+ Collisions.GRENADE_AMMO +" GRENADES");

        }

    }

}

 

2.Collision(Raycast) ,PlayAnimation

static var GRENADE_AMMO = 0;



function OnControllerColliderHit(hit : ControllerColliderHit)

{

    if(hit.gameObject.tag == "crateGrenades")

    {

        //destroy the ammo box

        Destroy(hit.gameObject);

        

        //add ammo to inventory

        GRENADE_AMMO += 8;

        print("YOU NOW HAVE "+ GRENADE_AMMO +" GRENADES");

        GameObject.Find("g_Count").guiText.text = ""+GRENADE_AMMO;

    }

}





var rayCastLength = 5;



function Update()

{    

    var hit : RaycastHit;

    

    //check if we're colliding

    if(Physics.Raycast(transform.position, transform.forward, hit, rayCastLength))

    {

        //...with a door

        if(hit.collider.gameObject.tag == "door")

        {

            //open the door

            hit.collider.gameObject.animation.Play("door_open");

        }

    }

}

 

3.Grenade Explosion

var creationTime = Time.time;

var explosionPrefab : Transform;

var lifeTime = 3;



function Awake()

{

    creationTime = Time.time;

}



function Update () 

{

    if(Time.time > (creationTime+lifeTime))

    {

        Destroy(gameObject);

        Instantiate(explosionPrefab, transform.position, Quaternion.identity);

    }

}

 4.MenuItem:

var isQuitBtn = false;



function OnMouseEnter () 

{

    renderer.material.color = Color.red;

}



function OnMouseExit () 

{

    renderer.material.color = Color.white;

}



function OnMouseUp()

{

    if(isQuitBtn)

    {

        Application.Quit();

    }

    else

    {

        Application.LoadLevel(1);

    }

}

 5.Denfender AI (Look at slowly,Visible range,InvokeRepeating)

var target : Transform;

var range = 10.0;

var leftFlame : GameObject;

var rightFlame : GameObject;

static var mode = "idle";

var gunSpeed = 0.05;



function Awake()

{

    target = GameObject.FindWithTag("Player").transform;

    leftFlame.renderer.enabled = false;

    rightFlame.renderer.enabled = false;

}



function Update () 

{    

    if(target && CanAttackTarget())

    {

        //transform.LookAt(target);

        var targetRotation = Quaternion.LookRotation(target.position - transform.position, Vector3.up);

        transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, Time.deltaTime * 1.2);

        

        var forward = transform.forward;

        var targetDir = target.position - transform.position;

        var angle = Vector3.Angle(targetDir, forward);

        if(angle < 10.0)

        {

            DoDamage();

        }

        else

        {

        }

    }

}



var damageTimer = 0.0;



function DoDamage()

{

    if(damageTimer==0.0)

    {

        damageTimer = Time.time;

    }

    if((damageTimer+0.05) > Time.time)

    {

        return;

    }

    else

    {

        Player.HEALTH -= 1;

        print(Player.HEALTH);

        damageTimer = Time.time;

    }

}



function CanAttackTarget()

{

    //Check if the target is close enough

    if(Vector3.Distance(transform.position, target.position) > range)

    {

        Disengage();

        return false;

    }

    

    var hit : RaycastHit;

    

    //Check if there's collision inbetween turret & target

    if(Physics.Linecast(transform.position, target.position, hit))

    {

        if(hit.collider.gameObject.tag != "Player")

        {

            Disengage();

            return false;

        }

        else

        {

            Attack();

            return true;

        }

    }

    return true;

}



function Attack()

{

    if(mode != "attack")

    {

        InvokeRepeating("FalconAnimate", 2, gunSpeed);

        mode = "attack";

    }

}



function Disengage()

{

    if(mode != "idle")

    {

        CancelInvoke();

        mode = "idle";

        leftFlame.renderer.enabled = false;

        rightFlame.renderer.enabled = false;

    }

}



function FalconAnimate()

{

    if(leftFlame && rightFlame)

    {

        if(leftFlame.renderer.enabled)

        {

            leftFlame.renderer.enabled = false;

            rightFlame.renderer.enabled = true;

        }

        else

        {

            leftFlame.renderer.enabled = true;

            rightFlame.renderer.enabled = false;

        }

    }

    else

    {

        print("Effects on Turret not set!");

    }

}

6.GUI

a.Set Text
　　GameObject.Find("g_Count").guiText.text = ""+5;
b.Set Texture
　　var h80 : Texture2D;
　　GameObject.Find("g_Health").guiTexture.texture=h80;

7.Audio

var audiofile : AudioClip;
audiofile.PlayOneShot();
//audiofile.Play();