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In a simple 2d game like Super mario brothers, how would you script "gravity" on to an actor?

just follow the tutorial located in the copy of GE that you downloaded

(Game Editor-> Help-> Game Stuff-> Gravity)

add a draw actor event and put this

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yvelocity+8;

i think that shoud lwork

on draw actor you put

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yvelocity+=.5;

and on the keydown that you use to jump put

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yvelocity=-8;

otherwise you'd just flyupwards into space :P

OK, i have the gravity and they keydown W to make him jump, I used a physical response for the collision on the ground, however, you have to press W (jump) multiple times to get the character to jump, sometimes he jumps on the frist time you press the button, other times its up to 4, any ideas?

Look here:
http://game-editor.com/forum/viewtopic. ... light=jump