# Easing with arrow keys! **URL:** \ **Category:** flash\ **Created:** [December 27, 2003, 10:35pm UTC](https://forum.kirupa.com/t/easing-with-arrow-keys/38667 "2003-12-27T22:35:55Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![jerry](https://avatars.discourse-cdn.com/v4/letter/j/5daacb/32.png) [@jerry](https://forum.kirupa.com/u/jerry)\ **Post date:** [December 27, 2003, 10:35pm UTC](https://forum.kirupa.com/t/easing-with-arrow-keys/38667/1 "2003-12-27T22:35:55Z")
Hey there… I can’t seem to figure this out, I’m trying to make easing movement using the arrow keys…!? Here’s what I’m working with: [AS] speed = 20; MC.onEnterFrame = function() { if (Key.isDown(Key.UP)) { rotrad = MC.\_rotation/57; ymove = speed_Math.sin(rotrad); xmove = speed_Math.cos(rotrad); \_x += xmove; \_y += ymove; }[/AS] Any help would be awesome 😃 ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/kirupa/original/3X/6/2/621e5c11736f46532526e61be85940af4230f3e5.png) [@system](https://forum.kirupa.com/u/system)\ **Post date:** [December 28, 2003, 5:31am UTC](https://forum.kirupa.com/t/easing-with-arrow-keys/38667/2 "2003-12-28T05:31:03Z")
Sorry I’m kind of confused, what are you actually trying to do? What do you mean by “easing movement”? It could mean a variety of things… Oh yeah, it’s probably better to use a fairly accurate number to convert radians, ie. 57.296(at least) instead of 57 Keep working at it! 🙂 -EG ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/kirupa/original/3X/6/2/621e5c11736f46532526e61be85940af4230f3e5.png) [@system](https://forum.kirupa.com/u/system)\ **Post date:** [December 28, 2003, 8:35am UTC](https://forum.kirupa.com/t/easing-with-arrow-keys/38667/3 "2003-12-28T08:35:39Z")
[http://www.kirupa.com/developer/mx/gamecontrols.htm](http://www.kirupa.com/developer/mx/gamecontrols.htm) [http://www.kirupa.com/developer/actionscript/gravity.htm](http://www.kirupa.com/developer/actionscript/gravity.htm) ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/kirupa/original/3X/6/2/621e5c11736f46532526e61be85940af4230f3e5.png) [@system](https://forum.kirupa.com/u/system)\ **Post date:** [December 28, 2003, 11:32am UTC](https://forum.kirupa.com/t/easing-with-arrow-keys/38667/4 "2003-12-28T11:32:38Z")
> Sorry I’m kind of confused, what are you actually trying to do? OK - sorry if I was in a bit of hurry!.. Heres the deal: I’m moving a movieclip around the stage using the arrow keys - BUT when I release a key, the movement stops suddently, whats I want it to do is, to like ease out on release, to give a more smooth motion! … hope you can see where I’m going! ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/kirupa/original/3X/6/2/621e5c11736f46532526e61be85940af4230f3e5.png) [@system](https://forum.kirupa.com/u/system)\ **Post date:** [December 28, 2003, 11:52am UTC](https://forum.kirupa.com/t/easing-with-arrow-keys/38667/5 "2003-12-28T11:52:51Z")
Something like this (copy/paste) ```auto this.createEmptyMovieClip ("ball", 0); ball.lineStyle(10, 0, 100); ball.lineTo(.45, .15); ball.onEnterFrame = function () { // Courtesy of Senocular this.vx += (Key.isDown(Key.RIGHT)-Key.isDown(Key.LEFT)); this.vy += (Key.isDown(Key.DOWN)-Key.isDown(Key.UP)); // To decrease the speed this.vx *= .96; this.vy *= .96; // To move the darn thing this._x += this.vx; this._y += this.vy; } ``` You could also set a maximum speed so that it doesn’t just zoom out of the screen. pom 🙂 ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/kirupa/original/3X/6/2/621e5c11736f46532526e61be85940af4230f3e5.png) [@system](https://forum.kirupa.com/u/system)\ **Post date:** [December 28, 2003, 12:02pm UTC](https://forum.kirupa.com/t/easing-with-arrow-keys/38667/6 "2003-12-28T12:02:18Z")
YES - there it is! :s: THX Pom! Now I just need to figure out how to aply \_rotation to the Key.LEFT and Key.RIGHT… but I think I can manage that! Unless you offcause would submit a suggestion 😃 ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/kirupa/original/3X/6/2/621e5c11736f46532526e61be85940af4230f3e5.png) [@system](https://forum.kirupa.com/u/system)\ **Post date:** [December 28, 2003, 10:23pm UTC](https://forum.kirupa.com/t/easing-with-arrow-keys/38667/7 "2003-12-28T22:23:41Z")
I would love to, but I don’t understand what you’re doing with your first piece of code… 🙂 ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/kirupa/original/3X/6/2/621e5c11736f46532526e61be85940af4230f3e5.png) [@system](https://forum.kirupa.com/u/system)\ **Post date:** [December 28, 2003, 10:31pm UTC](https://forum.kirupa.com/t/easing-with-arrow-keys/38667/8 "2003-12-28T22:31:35Z")
hehe… OK! Here a allmost working example of what I’m working with - the only thing missing is the easing movement! :-\ See attached .fla ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/kirupa/original/3X/6/2/621e5c11736f46532526e61be85940af4230f3e5.png) [@system](https://forum.kirupa.com/u/system)\ **Post date:** [December 28, 2003, 10:43pm UTC](https://forum.kirupa.com/t/easing-with-arrow-keys/38667/9 "2003-12-28T22:43:03Z")
Just port the motion outside the if statements, and throw in the decelaration code 🙂 ```auto speed = 10; MC.onEnterFrame = function() { with (this) { if (Key.isDown(Key.UP)) { rotrad = MC._rotation/57; ymove = speed*Math.sin(rotrad); xmove = speed*Math.cos(rotrad); } if (Key.isDown(Key.DOWN)) { rotrad = MC._rotation/57; ymove = -(speed/5)*Math.sin(rotrad); xmove = -(speed/5)*Math.cos(rotrad); } _x += xmove; _y += ymove; xmove *= .96; ymove *= .96; if (Key.isDown(Key.RIGHT)) { i = MC._rotation+10; setProperty(_root.MC, _rotation, i); rot = MC._rotation; } if (Key.isDown(Key.LEFT)) { z = MC._rotation-10; setProperty(_root.MC, _rotation, z); rot = MC._rotation; } } } ``` By the way, if you’re using with (MC), which means in fact with (this), you don’t have to write MC (or this) in your code later… pom 🙂 ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/kirupa/original/3X/6/2/621e5c11736f46532526e61be85940af4230f3e5.png) [@system](https://forum.kirupa.com/u/system)\ **Post date:** [December 28, 2003, 10:48pm UTC](https://forum.kirupa.com/t/easing-with-arrow-keys/38667/10 "2003-12-28T22:48:30Z")
OFFCAUSE!.. THX you so much for your time and help - thumbs up m8! 🙂 ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/kirupa/original/3X/6/2/621e5c11736f46532526e61be85940af4230f3e5.png) [@system](https://forum.kirupa.com/u/system)\ **Post date:** [December 28, 2003, 10:53pm UTC](https://forum.kirupa.com/t/easing-with-arrow-keys/38667/11 "2003-12-28T22:53:41Z")
You’re welcome 😛