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Hi can somebody explain to me how the gravity work cuz i wanna make my player be able to jump very height like a ninja or superman or something..

come on pleaase help me
I used to help people when I know what they're asking

Are you asking for a definition of Gravity? Well its a constant force that is applied to objects within the game loop.
In a simple example inside the main loop you might have a sprite (2d) like so:



"Gravity" can be applied to the YAxis using the following in the Game loop:



This will increase the YPos by 1 every time the game loops, effectively pushing the sprite down.

A forum search would give you more than enough information you need. Search either "Gravity" or "Jumping".

If you want a faster answer then try to show that you have made an effort yourself. A bit of code will encourage people to answer. Using words such as 'cuz', 'wanna' doesn't help either, a little effort in your grammar shows that you have taken then time in checking what you have said and shows that you, at the very least, care about what you have said. Firefox has build in spell check nowadays so there is no excuse .

I can see that, like myself, your new so don't take this as a 'flame' but just a little advice to get quicker responses in the future.

Regards,

EDIT: Said all that and didn't upload the code. This example shows gravity and jumping, hit space to jump:

To expand on the code posted by DsarchyUK, basically you're going to have an acceleration variable, a velocity variable, and a position variable. The velocity describes the speed of your player and acceleration is the amount the speed increases/decreases each frame, the position is the position of your player and the velocity is added to this position each frame. When your player begins the jump, and inital velocity is set, which you can call the jump velocity, and each frame the acceleration caused by the gravity will lower this velocity by 9.8m/s (or whatever you want your gravity to be).

allright thanks