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the jumping script is

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yvelocity = yvelocity -8

but if i click jumping button it goes up each time
how to make just jumping one time

I read other topics but no one didn;t answered
correctly....

your right no one has a good answer so here it goes

1.follow the caveman tutorial

2.edit the button u use to jump, take away the
yvelocity = yvelocity -8
and create a variable called canJump
using the variables button.
then put

if(canJump == 1)
{
yvelocity=-10;
canJump=0;
}

3. on collision finish with ground put
canJump=1;

Hope it helped

ey thnx very very very much

np the other forums didnt cover this very well but im glad i could help

here is the REAL code, because the code Oman sended you has some minor bugs in it, like the organization, but its normal.

create a var called: can_jump

on space bar:

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if(can_jump==1)
{
yvelocity-=3.5;
can_jump=0;
}

on collision TOP side of ground:

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can_jump=1;

and thats all, it would work better.

I am sorry but i fail to see the difference,
that code has the same bugs that mine has.

???

it ok, i would of done it too like a year before, but dont worry, youl get even better tehn me, everyone dos!

I wasnt mad i just wanted to know what the problem
with my code is. But ok

i know, i thought you where sad and that i offended you, in some sort of ways...

nope. lol

k, well anyway, ive learned that way from the abuse 2 demo.

also if you put a collision finish event-script editor
canJump=0;
You stop yourself from being able to jump
when you are not on the ground.

yes, but it dos it also when your on ground, cuz if you put some gravety and some physical resond, it just bettewn 0.1 and 0.9 pixels, so it repeates the action over and over again, but you cant see it visibely that its mocing.

I have another way for the jump action. on the general forum i made a topic called "jumping " it is alot easier to do than make a new var in my opinion, but here is the gist of it: use instead of key down to make you jump, use key up, now when the jump key is released it will make you go up,(the - yvelocity) and when the jump key is released you must disable the key up event. and when the actor collides with the top of any of the "floor" actors, enable the key up event.

yeah, but what if in mid air you need to do a keydown button action?