Platform & Key Pressing Help

[GingaNinja]

Hey, Ive run into a bit of a problem with my platforming games. Im using a while loop embedded in the platforms frame to determine whether or not my player is touching the platform, and if so stop him from falling through. Heres the codes I used in moderation:

//Code for 'player1'
onClipEvent(load) {
  gravity = 1;
}
onClipEvent(enterFrame) {
  _y += gravity;
  gravity++;
  //...code for jumping etc
}

//Code for ground
onEnterFrame = function() {
  while(hitTest(_root.player1)) {
    _root.player1._y--;
    _root.player1.gravity = 0;
  }
};

Basically my aim is to allow my characters to jump up through the platforms from below but the platform should only prevent the player from falling through on his/her way down. Can anyone provide an example using my type of method?


Also is there a way to test if a key has been tapped twice using Key.isDown()?

Thanks for any help you can give.

[tidenburg]

Platformer Tutorial
there are all the aspects needed to make a basic platformer in there. If you make the player jump the way suggested:

if (player.hits>0) {
		if (Key.isDown(Key.UP)) {
			player.gravity = -10;
		} else {
			player.gravity = 0;
		}
	} else {
		player.gravity++;
	}

then you can stop snapping by adding this:

if (player.hitTest(_root['ground'+i]) && player.gravity>=0) {

The tutorial fully explains how to make platforms, just navigate to the right sections.

[GingaNinja]

Thankyou for that but I'd really like to keep my current method due to how far I am with my game. I can do platforming games well its just I cant find a solid method to achieve this effect and its annoying me.

Any other offers?

[tidenburg]

If when you jump you set the gravity to a negative number (you still haven't replied with your method) you can just add:
&& gravity > 0){
to the end of your hitTest.

[GingaNinja]

Ive tried that method before and yes, it does work - however if you refer to the flash file I have included at the bottom, you will notice that when you sit under the left platform and jump - he still snaps up to the platform.

http://www.sendspace.com/file/u0t3qk