[help] How to create simple gravity

[Gloo pot]

I would like to create a simple gravitational pull...

When my hero moves "player" i want him to roll to a stop, like friction...

And when he falls down a hill i want him to increase to a sertain speed and when he hits the gound bounce a little bit...

i dont know were to start or if there is some code in Fash that has sumthing like this already buily in....

PS: i would like your sugestions to be flash 5+ as i use flash MX 2004 thanks

[Joshman_123]

Learn yourself then do it yourself. Stop asking everyone here to code a game for you.

[Gloo pot]

Sorry...

[Joshman_123]

That's fine. Common mistake. No one here is going to do that for free though.

[tonypa]

These are simple and well written tutorials including gravity and easing:
http://www.bit-101.com/tutorials/

[Gloo pot]

Learn yourself then do it yourself. Stop asking everyone here to code a game for you.

You'll be happy to know i have spent the last 2 hours trying to do it all by my self...

But i have come across a problem, which i hope some one will be able to help me fix. I cant get my MC called player to deaccerlerate to a stop when your arnt pressing down any of the movment keys...

// Acceleration and Top Speed
onClipEvent (load) {
	weopon.gotoAndStop(1);
	gotoAndStop(1);
	acceleration = .1;
	speed = 10;
}
// Accerlation Right
onClipEvent (enterFrame) {
	if (Key.isDown(Key.RIGHT)) {
		acceleration++;
		gotoAndStop(2);
		if (acceleration>speed) {
			acceleration--;
		}
	}
	// Accerlation Left
	if (Key.isDown(Key.LEFT)) {
		acceleration--;
		gotoAndStop(1);
		if (acceleration<-speed) {
			acceleration++;
		}
// Deaccerlation **** THIS IS WERE MY PROBLEM IS ****
		if (Key.isDown()) {
			if (acceleration<0) {
				acceleration++;
			} else {
				if (acceleration>0) {
					accerlation--;
				}
			}
		}
	}
	_x += acceleration;
}

Whats wrong? to me that code seems perfectly normal, I was even proud of my self for comming up with such a kewl thing. (Sorry for being a newbie)

[T1ger]

Learn yourself then do it yourself. Stop asking everyone here to code a game for you.

That's fine. Common mistake. No one here is going to do that for free though.

Why so harch on a new guy? He just asked a question. If you dont like it, you dont have to reply. And someone wondered why newbies don't stick around...

if (Key.isDown()) wont work, try this instead:

code:

---

if (Key.isDown(Key.RIGHT)) {

//acclerate right

} else if (Key.isDown(Key.LEFT)) {

//acclerate left

} else {

//deacclerate

}

---

the thing is, when the player presses both left and right at the same time, he acclerates right. Not a big problem, but if you want him to deacclerate when no or both buttons are pressed, just say so, and I'll help you

Good luck

[Joshman_123]

Why so harch on a new guy? He just asked a question. If you dont like it, you dont have to reply. And someone wondered why newbies don't stick around...

He has a few other threads though. I didn't mean to come across so harsh.


I'm pretty sure it's "deceleration" by the way.

[Gloo pot]

Thanks for that code T1ger, i have now gotten it to work but.... it only decelerates left, the right side dosnt seem to work?

Here is my code, I have tryed heeps of ways to get it to work but i cant.
Also thanks again T1ger, you'll notice its much shorter now

 onClipEvent (enterFrame) {
	if (Key.isDown(Key.RIGHT)) {
		acceleration++;
		gotoAndStop(2);
		if (acceleration>speed) {
			acceleration--;
		}
	} else if (Key.isDown(Key.LEFT)) {
		acceleration--;
		gotoAndStop(1);
		if (acceleration<-speed) {
			acceleration++;
		}
//         ****  Deceleration Code  ****
	} else {
		if (acceleration<0) {
			acceleration++;
		} else {
			if (acceleration>0) {
				accerlation--;
			}
		}
	}
	_x += acceleration;
}

P.S. I also tryed the deceleration code with }else if ( rather than what i have now }else{ if (

[Gloo pot]

Also joshman it kewl... i have bin posting a lot of help lately... its just that i love all this flash stuff and i am trying to learn as much as i can as fast as i can so please try and not get angry with me for being a noob and asking for lots of things.

I learn faster breaking down code and looking at it than trying to figure it out my self. I also rewrite all the code again so i understand it and save them for future reference (just in case i forget).

Thanks guys for helping me, ya never know i might even end up helping you one day :P

[Joshman_123]

I was at that stage not long ago. It's just the first hurdle of understanding the ActionScript statements and what they do. The best tutorial I've done is the ActionScript tutorial at www.newgrounds.com/help or www.newgrounds.com/flash or something. I recommend that to you. Good luck and I'll try to help you as much as I can. Just cut back on the thread-making and you'll be right

[VENGEANCE MX]

Yeah, I don't suppose you could narrow it down a little bit?

Here's one I made for COMPLETE beginners who want to learn how to make buttons and use basic syntax:

http://www.newgrounds.com/portal/view/219775

And here's another I made for creating an FPS from scratch, although I think there's a bug or two in it somewhere:

http://www.newgrounds.com/portal/view/201217

[Gloo pot]

Thanks guy's.

Do any of your know what is wrong with my code? No matter how many different ways i try it wont work.

Please Help

[TeroLebe]

Do any of your know what is wrong with my code? No matter how many different ways i try it wont work.
Please Help

accerlation-- shoud be spelled acceleration--, it's very common error to have typo in code, so be sure you learn to spot these out with yourself.

This is just a short code, so it could get very hard later on if somebody else always have to find the small typo.

[Gloo pot]

oh my bad, thanks it works now, i bet that was the problem in my first attemp