Aircraft Physics

[Russkie]

I want to make an arrow, turn left or to the right while it is flying...

like that game called astroides...

when you turn left you will start to move in that direction...

can someone give the actionscript example?
I tryed to make this but the soo called aircraft dosen't move in the direction I turn , it just moves in the same direction I orginally assigned it to do.

[Eric Jr.]

I made this a while ago for a contest, hope it helps:



Stage = { width: Stage.width, height: Stage.height };
c = [ [0,15,0,0],[5,0,-5,0] ];

_root.createEmptyMovieClip("fighter", 1).beginFill(0, 100);
for(i=0; i<c[0].length; i++) fighter.lineTo( c[0][i], c[1][i] );

fighter.onEnterFrameEvent = function()
{
newX = Math.cos( (currentAngle*(Math.PI/180)) );
newY = Math.sin( (currentAngle*(Math.PI/180)) );

if (Key.isDown(Key.LEFT) ) currentAngle -= 8;
if (Key.isDown(Key.RIGHT)) currentAngle += 8;
if (Key.isDown(Key.UP) && (mySpeed < 10)) mySpeed += 0.5;
if (Key.isDown(Key.DOWN) && (mySpeed > 0)) mySpeed -= 0.8;
if (this._x >= Stage.width) this._x = 1;
if (this._x <= 0 ) this._x = Stage.width;
if (this._y >= Stage.height) this._y = 1;
if (this._y <= 0 ) this._y = Stage.height;
if (mySpeed > 0) mySpeed -= 0.2;
if (mySpeed < 0) mySpeed = 0;

this._rotation = currentAngle;
this._x += newX * mySpeed;
this._y += newY * mySpeed;

updateAfterEvent();
}

fighter.interval = setInterval(fighter, "onEnterFrameEvent", 10);
fighter._x = Stage.width/2;
fighter._y = Stage.height/2;

[Russkie]

could you give me the entire movie?
I don't know where to add this?

[Eric Jr.]

That is the entire movie :bad:

Just copy all the code inside the onEnterFrameEvent function, and put that inside your objects onEnterFrame-event!