Movement + Rotation In Flash

asgsoft · 03-04-2006, 01:14 PM

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:

PHP Code:

  onClipEvent (load) {

thrust = 1; //sets speed

decay = 1;//sets strenght not needed at the moment

????: NamePros.com http://www.namepros.com/webmaster-tutorials/173475-movement-rotation-in-flash.html
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

????: NamePros.com http://www.namepros.com/showthread.php?t=173475
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.

03-04-2006, 01:14 PM	THREAD STARTER #1 (permalink)
asgsoft NamePros Regular Join Date: Sep 2005 Location: At Home Posts: 881	Movement + Rotation In Flash 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: PHP Code: onClipEvent (load) { thrust = 1; //sets speed decay = 1;//sets strenght not needed at the moment ????: NamePros.com http://www.namepros.com/webmaster-tutorials/173475-movement-rotation-in-flash.html 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 ????: NamePros.com http://www.namepros.com/showthread.php?t=173475 xSpeed += thrustMath.sin(_rotation(Math.PI/180)); ySpeed += thrustMath.cos(_rotation(Math.PI/180)); } else { xSpeed = decay; ySpeed = decay; //slow down } speed = Math.sqrt((xSpeedxSpeed)+(ySpeedySpeed)); 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. __________________ Free SEO and Domain tools \|HTML ENT\| Your Source to expired domains with PageRank & tips

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