Computer Science Canada

Jump help
Author:  Mayb123 [ Thu Nov 22, 2007 12:28 pm ]
Post subject:  Jump help
Hello fellow programmers. i'm trying to make a jumping procedure where height is determined by how long you hold the 'w' key, but it adds a fraction of the speed, but say, if you let go partway up the jump, the arc of the jump is lower and you fall down. for example, in N-Game, if anyone here has played it, the longer you hold the jump button, the higher you jump, but there's still a limit. what kind of code would i use?

code:
procedure jump %fix this part by adding horizontal motion

if y > mcrad then
        vy -= gravity
    else
        vy := 0
        end if
    if vy = 0 and key ('w') then
vy+=3
    end if   
   
%     if vy=0 and key ('w') and y>=platformx2(1) and y>= platformy1(2)
%     % if key ('w') then
%     %     vy += ax
%     %
%     % % end if
%     % % if round (y) > 10 then
%     % %     ax += gravity %Fix these
%     % % end if
%     % if round (y) <= 0 then
%     %     vy := 0
%     % end if
 end jump
Author:  Clayton [ Thu Nov 22, 2007 1:40 pm ]
Post subject:  RE:Jump help
Let's say you have a force variable, called force, and a gravity constant. When in the air, subtract your gravity constant no matter what. Then, check to see if the jump key is being pressed, if it is, add your force to the jump, the decrement the force.
Author:  Mayb123 [ Fri Nov 23, 2007 12:12 am ]
Post subject:  Re: RE:Jump help
Clayton @ Thu Nov 22, 2007 1:40 pm wrote:
Let's say you have a force variable, called force, and a gravity constant. When in the air, subtract your gravity constant no matter what. Then, check to see if the jump key is being pressed, if it is, add your force to the jump, the decrement the force.


sorry, but i'm just having a bit of trouble wrapping my head around where to put in code to do that. please elaborate
Author:  petree08 [ Fri Nov 23, 2007 2:05 pm ]
Post subject:  RE:Jump help
hows about

if Key is pressed then
if JumpForce < (max force) then

JumpForce := JumpForce + (whatever you increase it by)

end if

end if
if Key is not pressed then the Jumpforce = 0

well that's a rough outline

:


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