Movement + Rotation In Flash

[asgsoft]

Have you seen these flash space games where you can move and rotate a spaceship. well here is how to do it.

1- Load up flash mx and set the document size to 550 by 400. to do this go to modify>document.

2- create a spaceship what ever you want it to be.

3- select it and press on F8 select movieclip and the press ok.
Press on the spaceship now and load up the actions panel by going to windows>actions. make sure it says Actions-Movie clip not Actions-frame.
add the following in the actions box:

onClipEvent (load) {
thrust = 1; //sets speed
decay = 1;//sets strenght not needed at the moment
maxSpeed = 15;//maximum speed
}
onClipEvent (enterFrame) {

if (Key.isDown(Key.RIGHT)) { //if right button is down
_rotation += 10; //rotate 10 degreese clockwise
}
if (Key.isDown(Key.LEFT)) { //if left button is down
_rotation -= 10; //rotate 10 degreese anti-clockwise
}
if (Key.isDown(Key.UP)) {//if up button is down
xSpeed += thrust*Math.sin(_rotation*(Math.PI/180));
ySpeed += thrust*Math.cos(_rotation*(Math.PI/180));

} else {
xSpeed *= decay;
ySpeed *= decay; //slow down

}
speed = Math.sqrt((xSpeed*xSpeed)+(ySpeed*ySpeed));
if (speed>maxSpeed) {
xSpeed *= maxSpeed/speed;
ySpeed *= maxSpeed/speed;
}
_y -= ySpeed;
_x += xSpeed;

//make the ship come back on screen if it goes out of view
if (_y<0) {
_y = 400; // document height
}
if (_y>400) {
_y = 0;
}
if (_x<0) {
_x = 550; //document width
}
if (_x>550) {
_x = 0;
}
}

test the movie by clicking control+ enter
That should do the job neatly. If you have any problems or errors comming up please do not hesitate to contact me.