How to disable something based upon collision.

Trampskey

Hello intelligent people of this forum, I am looking for assistance, you see, I am making a platformer game, most of it is working, but I have ran into the problem of my character basically "flying", as he can jump continuously in mid air, I have tried recoding the jumping physics and gravity, I have tried using timers to limit the jumping, but nothing seems to work, so I theorised I could create a system where the action of jumping is disabled unless you have collision with actor "floors" so you could jump off the ground, but once you are in Mid-Air, you can't jump again until you once again have collision with the floor.

I imagined it would go something along the lines of

if - collision with actor "floors" is true
do - change attribute game.up to true
else - change attribute game.up to false

But this isn't exactly right as far as I can see, what would be the best way of going about this, creating an attribute that would account for acceleration, was my first guess, but I am still not sure how to do that, any help would be much appreciated, thank you, and I look forward to your replies.

GLGAMES

Did you try to increase the gravity more? are you using velocity for jump?

SlickZero

You would need to make a boolean attribute, and call it something like "grounded" and have it set to true when the character is in contact with the ground, and false when it is not.

Then you would need to make your rules in the actor say something like this

when attribute.grounded is true + "whatever makes the character jump" is true
jump

otherwise = nothing