[AS2] help with collision test

[kendyb]

I am using classes in my flash game. I try to use the hitTest function but it does not work for me. Can someone please help me. In the following code, I have an array in the class ship called enemies that and I need collision between the missiles and the enemies passed on to the array. Here is my missile class:


class missile extends MovieClip
{
//speed of missle
var msleSpeed;

//function to set missle speed
function onLoad()
{
msleSpeed = 25;
}

//function to have missile actions
function onEnterFrame()
{
//speed missile moves at
_x += msleSpeed;

//if missile movieClip greater than 600 pixels, remove missile movieClip from stage
if(_x > 1000)
{
//to remove missile movieClip
this.removeMovieClip();
}

//check the enemies array in the ship class, if this hits enemy1, enemy1 explode
for(var i in _root.ship.enemies)
{
if(this.hitTest(_root.ship.enemies[i]))
{
//remove the shot
this.removeMovieClip();

//find the enemy ship in the array declared in the ship class and call the explode function
_root.ship.enemies[i].explode();
_root.ship.updateScore(50);
}

}
}


}

[pradvan]

Please post your code in code tags.

[FluffyPapes]

Well, it would help if you yourself could understand the code.

From what I know, this is copied and pasted off of Kongregate's [www.kongregate.com] "Shootorial".

Either way, the shootorial goes completely in depth with what each thing does. Try going back to Shootorial #5, where it first talks about the shooting and the collision detectings.

[killermelga]

EDIT, NOW WITH ALL THE CODES

i made all they said on the shootorial, and i think i understood every step, but i still cant make my missiles collide with the enemyes, even though my ship collides with them

MISSILE:

class missile extends MovieClip
{
var speed;

function onLoad()
{
speed = 20
}
function onEnterFrame()
{
_x += speed;

for(var i in _root.ship.enemies)
{
if(this.hitTest( _root.ship.enemies[i] ) )
{
this.removeMovieClip();
_root.ship.enemies[i].explode();
}
}

if(_x > 600)
{
this.removeMovieClip();
}
}
}



HERO SHIP:

class ship extends MovieClip
{
var velocity;
var shootLimiter;
var enemyTimer;
var enemies;

function onLoad()
{
velocity = 10;
shootLimiter = 0;
enemyTimer = 0;
enemies = [];
}

function onEnterFrame()
{
if( Key.isDown(Key.RIGHT) )
{
_x = _x + velocity;
}
if( Key.isDown(Key.LEFT) )
{
_x = _x - velocity;
}
if( Key.isDown(Key.UP) )
{
_y = _y - velocity;
}
if( Key.isDown(Key.DOWN) )
{
_y = _y + velocity;
}

shootLimiter += 1;

if( Key.isDown(Key.SPACE) && shootLimiter > 8 )
{
shootLimiter = 0
var missile = _root.attachMovie( "missile" , "missile" + _root.getNextHighestDepth(), _root.getNextHighestDepth() );
missile._x =_x + 50;
missile._y=_y + 2
}

enemyTimer += 1
if(enemyTimer > 60)
{
enemyTimer = 0
var enemy = _root.attachMovie("EnemyShip", "EnemyShip" + _root.getNextHighestDepth(), _root.getNextHighestDepth());
enemies.push(enemy);
}
}
}


ENEMY SHIP:

class EnemyShip extends MovieClip
{
var speed;

function onLoad()
{
_x = 700;
_y = Math.random()*200 + 50
speed = Math.random()*5 + 5
}
function onEnterFrame()
{
_x -= speed;

if(_x < -100)
{
this.removeMovieClip();
}

if(this.hitTest(_root.Ship))
{
explode();
}
}

function explode()
{
var explosion = _root.attachMovie( "Explosion" , "Explosion" + _root.getNextHighestDepth(), _root.getNextHighestDepth() );
explosion._x = _x;
explosion._y = _y;
this.removeMovieClip();
}
}


EXPLOSION:

class Explosion extends MovieClip
{
function onEnterFrame()
{
if(this._currentframe == this._totalframes)
{
this.removeMovieClip();
}
}
}

[pradvan]

killermelga, where is the rest of the code? can't really tell what's wrong without seeing the rest of it

[killermelga]

pradvan, now with all the codes

[pradvan]

Inside your missle class, add this trace:


class missile extends MovieClip
{
var speed;
function onLoad() {
speed=20;

trace(">>> " + _root.ship.enemies);
}
function onEnterFrame()
{
_x+=speed;
for (var i in _root.ship.enemies) {
if (this.hitTest(_root.ship.enemies[i])) {
this.removeMovieClip();
_root.ship.enemies[i].explode();
}
}
if (_x>600) {
this.removeMovieClip();
}
}
}


tell me what you get from that trace

[killermelga]

i get ">>> undefined" on the output console
what does it mean?

[pradvan]

it means that your missile class doesn't see "_root.ship.enemies".

So when you do a hitTest, it doesn't work because it can't see the enemies

[killermelga]

so, can u see what can i do to solve it?

[pradvan]

Luckily I guessed what was wrong without seeing the fla. Can't really fix it without playing around with the fla

[killermelga]

how can i upload the file?
rar files arent supported and with zip i cant have one file under 500mb

[Huijari]

attach it as .fla with attach in "additional options" here on as forums

[killermelga]

here it is the fla file

[Huijari]

cant open it, some winrar error, could you post not in zip

[killermelga]

but on additional options, .fla isnt a recognized file extension, as well as .rar

[Huijari]

post it on some files uploading site then

[killermelga]

lol, i never thought of that xp

Download ship.fla gratuito em uploading.com (http://uploading.com/files/6cd2b6ae/ship.fla/)

[Huijari]

can't open, im using cs4 could you post it as it?