As Help _xmouse, _ymouse ???

[bornstar]

How can I get my movie clip to follow the mouse ?
I already wrote those two lines :

onEnterFrame = function () {
ship._x += (_xmouse-ship._x)/5;
ship._y += (_ymouse-ship._y)/5;
};

But I want my ship to rotate slightly just like in this game :
http://www.newgrounds.com/portal/view/45 2407

sorry for my english
I'm French ...

Thank You

[LonLonRanch]

I'd expect this tutorial at Kirupa.com could help you out.

[Paranoia]

You'll need to use some trig to work out the angle between the ship and the mouse - look for the trig functions from the Math class (sin, cos, tan, atan, atan2, etc).

You'll also need to convert from radians to degrees for the rotation:

degrees = radians * 180 / Math.PI;
radians = degrees * Math.PI / 180;

[bornstar]

Thank you :-D
I came up with that :

onEnterFrame = function () {
	xDiff = _xmouse-ship._x;
	yDiff = _ymouse-ship._y;
	hDiff = Math.sqrt(xDiff*xDiff+yDiff*yDiff);
	ship._x += (xDiff)/5;
	ship._y += (yDiff)/5;
	//ship._x += Math.random()*5-2.5;
	//ship._y += Math.random()*5-2.5;
	if (hDiff>50) {
		ship._rotation += Math.round((Math.asin(yDiff/hDiff)*180/Math.PI-ship._rotation)/20);
	} else {
		ship._rotation -= ship._rotation/Math.sqrt(Math.pow(ship._rotation, 2));
	}
};

It's the best I could do ...
If someone has something more clever ?

[bornstar]

no one ?

[RaZzy86]

On the top off my head, check the distance between your ship and the mouse pointer. If the mouse is further away speed increases etc. you can figure that out.
Use pythagaros to get the distance.

I use this class for that (AS3 though, but doesn't make that much of a difference i think)

public static function pyth(stX:Number, stY:Number, ndX:Number, ndY:Number):Number {
					return Math.sqrt( (stX - ndX)*(stX - ndX) + (stY - ndY)*(stY - ndY) )
				}

[RaZzy86]

Woops you already did that..

[Toast]

Le jeu que tu as montré n'est pas si simple que ça a programmer. Mais je te souhaite bonne chance quand-meme. Je n'ai pas pu tester ton code, mais je pense que quelque chose comme cela devrait marcher.

onEnterFrame = function () {
xDiff = _xmouse-ship._x;
yDiff = _ymouse-ship._y;
angle = Math.atan(_root._ymouse-_y,_root._xmouse -_x)*(180/Math.PI)+90;
ship._x += (xDiff)/5;
ship._y += (yDiff)/5;
ship._rotation = angle;
};

Il se peut que l'angle soie a l'envers, dans ce cas tu devrais probablement changer le "+90" dans angle a "-90". Si tu veux que l'angle de ton ship soie plus légérement modifié par la souris, modifie le variable "angle" en le divisant par le nombre que tu veux. Pour cela tu dois aussi verifier que quand ton ship est a 0 rotation, sa direction est vers la droite.

[bornstar]

Merci Toast, mais ton code fonctionne moins bien que le mien ...

Thanks Toast, but your code doesn't works as good as mine ...

Anyone else ?

[bornstar]

... :-D ? Where are the programmers :-D

[hesselbom]

Pretty easy actually.

See if you can work out was is going on in the provided code.

onEnterFrame = update;

function update():Void {
	var x_spd:Number = (_xmouse - ship._x) / 5;
	var y_spd:Number = (_ymouse - ship._y) / 5;
	
	ship._x += x_spd;
	ship._y += y_spd;
	ship._rotation = Math.atan2(y_spd / 20, 1) * to_deg;
};

var to_deg:Number = 180 / Math.PI;