Forums → Programming Forum → A Games Special Features Programming Code (AS3)

Almost everything in code for a game is either an if, or a function.

Think, if MovieClip.y returns as a number, we should be able to use it as such, right?

So to figure out your altitude, you might do...

var altitude:Number;

altitude = player.y;

stage.addEventListener(Event.ENTER_FRAME, frameLoop);

function frameLoop(event:Event):void
{
altitude = (player.y); //then you might do *2 or /2 if the number is too big or too small.
}

And for fuel you might do...

var fuel:Number = 100;
var fuelDecrease:Number = 5;
if (put your key code or something here)
{
fuel -= fuelDecrease;
}

hope this helps

@HouseHero the questions you are asking are too broad, work with one at a time until you solve the function then move on to the next

THIS LINK will get you started with angles and direction

PART 2 goes more in depth on the power added to shot and hitTest

once you understand how these basic things work you will be putting together games in no time.

I know how to add and remove child. But how can I support multiple instances like I add a Child I want to make it shoot to other symbols. Can Anyone help me in AS3

//speed of bullet
var bulletSpeed:Number = = 10;

//distance to hero
var bulletX:Number = enemy.x - hero.x;
var bulletY:Number = enemy.y - hero.y;

//radian
var radians:Number = Math.atan2(bulletY, bulletX);

//angle 180 might need to be changed depending on the direction of the bullet MC
var angle:Number = radians * 180 / Math.PI;

//rotate bullet to angle

//new pos to hero
var newBulletX:Number = Math.cos(radians);
var newBulletY:Number = Math.sin(radians);

//move bullet * bullet speed
bullet.x -= newBulletX * bulletSpeed;
bullet.y -= newBulletY * bulletSpeed;

I just typed this and did not test, sample on request

oop forgot the bullet rotation...

//rotate bullet to angle
bullet.rotation = angle;

once you have figured out 1 enemy with bullet fire you can then implement this technique HERE