Character jump in platform game

Hi. Im trying to make my character jump, but i dont know how to start…

I want something like this:
If i hold jump button, then my character must go up to a certain height, then comes a gravity effect, an then he goes down.
But if i release jump button before he reach max height, then in that same moment comes gravity effect, and he goes down.

How can i implement jump? how many variables i must control for generate a good gravity effect? speed?time?

And how to link that with the floor?(If i reach floor, then stop jump)

Thanks.

I didn’t read the whole article but I read most of it. This helps you add gravity and jump thats all based on game time.

http://home.cmit.net/rwolbeck/programmingtutorial/reference/addgravity.htm

let me know if it help you out and good luck with your game!

Great! that’s what i was searching for :smiley: Thank you!