Help!! Setting "body" for enemy in shooter!!

Report · Apr 30, 2014

I tried some code for my enemyShooter's hitTest and it worked.

 if (_root.enemyShooter.body.hitTest(_root.ship.body)) {...}

(enemyShooter is the instance name of movieclip)

However, this doesn't work.

var name = _name
 if (_root.name.body.hitTest(_root.ship.body)) {...}

The reason I am doing this is because there are many enemies like enemyShip1, enemyShip2, enemyShip3.

The name if it is set by

 "EnemyShip" + _root.getNextHighestDepth()

because I use

 _root.attachMovie("EnemyShip", "EnemyShip" + _root.getNextHighestDepth(), _root.getNextHighestDepth());

I cannot find the instance name unless using _name

How can I make it work?

Report · Apr 30, 2014

in most situations it's best to store those enemy references in an array and loop through the array especially if you're sometimes removing enemies and they no longer need to be checked for a hittest (or anything else).

Report · Apr 30, 2014

Yes, I already used the Array feature.

My whole code:

class EnemyBasic extends MovieClip
{
    var _x, _y, speed, removeMovieClip, hitTest, health, shaking, shakeDuration, _rotation, name, _name;
    function EnemyBasic()
    {
        super();
    } // End of the function
    function onLoad()
    {
        _x = 700;
        _y = Math.random() * 200 + 50;
        speed = Math.random() * 3 + 3;
        _root.ship.enemies.push(this);
                    health = 2;
                    shaking = false;
        shakeDuration = 10;
        _rotation = 0;
                                        name = _name;
    } // End of the function
    function onEnterFrame()
    {
        _x = _x - speed;
        if (_x < -100)
        {
            this.removeMovieClip();
        } // end if
                    trace(name)
        if (_root.ship.enemies.hitTest(_root.ship.body))
        {
            this.explode();
        }
    }
} // End of Class

Some of the code are removed to make this simpler.

How do I change the HitTest part? _root.ship.enemies doesn't work

Report · May 01, 2014

why doesn't _root.ship.enemies work?

is it populated when you start your hittest? if yes, how are you trying to use it?

Report · May 01, 2014

What means populated when starting hittest?

If I use if (this.hitTest(_root.ship.body))

then no problem

but I want _root.ship.body to have hit Test with the Enemy movieclip's body.

so I try to use:

if (_root.ship.enemies.body.hitTest(_root.ship.body)) or

if (_root.ship.name.body.hitTest(_root.ship.body)) or

if (_root.ship._name.body.hitTest(_root.ship.body))

I tried all of them and doesn't work.

(I am very new to flash, so I just put anything I can think of into it)

Report · May 01, 2014

use:

for(var i:Number=_root.ship.enemies.length-1;i>=0;i--){

_root.ship.enemies.hitTest(_root.ship.body){

// do whatever

// if _root.ship.enemies is destroyed and no longer needed use the two lines below:

_root.ship.enemies.removeMovieClip();

_root.ship.enemies.splice(i,1);

}

Report · May 03, 2014

I copied and paste this code but it doesn't work.

The enemy exploded before it enter the screen(before it collide with ship)

I am using ActionScript 2, also can you explain this piece of code?

Report · May 03, 2014

show the code you used so i can see where you placed this code.

Report · May 03, 2014

whole piece of code:

class EnemyBasic extends MovieClip

{

var _x, _y, speed, removeMovieClip, hitTest, health, shaking, shakeDuration, _rotation, name, _name;

function EnemyBasic()

{

super();

} // End of the function

function onLoad()

{

_x = 700;

_y = Math.random() * 200 + 50;

speed = Math.random() * 3 + 3;

_root.ship.enemies.push(this);

health = 2;

shaking = false;

shakeDuration = 10;

_rotation = 0;

name = _name;

} // End of the function

function onEnterFrame()

{

_x = _x - speed;

if (_x < -100)

{

this.removeMovieClip();

} // end if

for(var i:Number=_root.ship.enemies.length-1;i>=0;i--){

_root.ship.enemies.hitTest(_root.ship.body)

{

this.explode();

if (_root.ship.shield._visible == false)

{

_root.ship.updateHealth(-20);

_root.ship.initShake();

} // end if

var _loc3 = _root.attachMovie("SmallExplosion", "SmallExplosion" + _root.getNextHighestDepth(), _root.getNextHighestDepth());

_loc3._x = _root.ship._x;

_loc3._y = _root.ship._y;

}} // end if

if(shaking == true){ this.shake(); }

} // End of the function

function takeDamage()

{

if (health < 2) { this.explode(); }

else { health -= 1; initShake();}

} // End of the function

function explode()

{

var _loc4 = _root.attachMovie("Explosion", "Explosion" + _root.getNextHighestDepth(), _root.getNextHighestDepth());

_loc4._x = _x;

_loc4._y = _y;

_root.ship.updateScore(100);

_root.ship.kills = _root.ship.kills + 1;

var _loc3 = _root.attachMovie("RewardPoints", "RewardPoints" + _root.getNextHighestDepth(), _root.getNextHighestDepth());

_loc3._x = _x;

_loc3._y = _y;

_loc3.field.text = 100;

_root.soundFX.attachSound("big_explosion.wav");

_root.soundFX.start();

this.removeMovieClip();

} // End of the function

function initShake()

{

shaking = true;

shakeDuration = 10;

_rotation = 5;

var _loc5 = _root.attachMovie("SmallExplosion", "SmallExplosion" + _root.getNextHighestDepth(), _root.getNextHighestDepth());

_loc5._x = _x;

_loc5._y = _y;

} // End of the function

function shake()

{

_rotation = _rotation * -1;

shakeDuration = shakeDuration - 1;

if (shakeDuration == 0)

{

shaking = false;

_rotation = 0;

} // end if

}

} // End of Class

Report · May 03, 2014

that hittest shouldn't be in the enemy class. it should be in some kind of controller class.

or, if you want to have each enemy run its own hittest, don't use an array to store enemy instances and use this.hitTest(_root.ship.body)

Report · May 03, 2014

this.hitTest works for enemy, but I am trying to make it like enemy.body.hitTest or something like that because I want to make a "mask" for the enemy.

how do I do it in controller class?

Report · May 04, 2014

you can do it in a controller class using the array and code i showed previously, but you should probably use a this.body.hitTest() in your enemy class.