Scratch

To make smooth jumping, just use velocity! Velocity is simple, and to incorporate it into your stand-on-able platforms, I'll make a very long post, coming up next!

To start, we want to be able to use velocity, which will be using these scripts here:

[blocks]

make a variable called "velocityY"

<when green flag clicked>
<forever>
<if><<  <not>  >><touching[ ground color/ground sprite>
<change{ <{ velocityY }> }by( -0.1 )> (you can alter the number to make him jump higher/lower
<end>
<if><touching[ ground color/ground sprite>
<set{ velocityY }to( 0.1
<end>
<end>

This will simply give you... nothing. To add functionality to our velocity, just use this:

<when green flag clicked>
<forever>
<change y by( velocityY
<end>
<end>

That should just make us not go through a platform and make us fall if we are not touching the ground sprite. To truly add functionality to our velocity, simply add the script to the sprite:

<when green flag clicked>
<forever>
<if><touching[ ground color/ground sprite>
<if> <key[ space/up arrow ]pressed?>
<set{ velocityY }to( 8 (you can change to make him jump higher/lower.

[/blocks]

That should work, and if it doesn't, just tell me and I'll see what's wrong!

Coolstuff -

thanks for helping answer other community members questions, it is great to see this kind of collaboration 

To prevent the sprite from sinking into a platform use this script
<when green flag clicked>
<forever>
      <if><touching color[ Platform color
           <change y by( 1 )
      <end>
<end>

Last edited by geckofreak (2008-06-05 16:03:43)

geckofreak wrote:

You also might want to improve your motion scripts:

<when green flag clicked>
<forever>
     <if><key[ right arrow ]pressed?>
          <point in direction( right )
          <change x by( 3 )
     <else>
          <if><key[ left arrow ]pressed?>
               <point in direction( left )
               <change x by( -3 )
          <end>
     <end>
<end>

I fixed it 

If you want smooth jumping you don't need velocity. You can use this:
<when green flag clicked>
  <forever>
       <if><key[ up arrow ]pressed?>
            <set{ Jumping }to( 1 )
            <repeat( 4 times )
                 <change y by( 2 )
            <end>
            <repeat( 6 times )
                 <change y by( 4 )
            <end>
            <repeat( 10 times )
                 <change y by( 6 )
            <end>
            <repeat until> <touching color[ platform color
                 <change y by( -5 )
            <end>
       <end>
  <end>

You will also need to make the top line of the platforms a different color and use this script:
<when green flag clicked>
  <forever>
       <if> <not><touching color[ top line color ] >>
            <if> <( <{ jumping  }> <=> 0 )>
                 <repeat until><touching color[ top line color
                 <change y by( -5
                 <end>
            <end>
       <end>
  <end>

Last edited by geckofreak (2008-06-05 17:32:29)

Everyone seems to get genders wrong. Lets say, if your name is Bluestribute, your a boy, and everyone else if just "them"     

coolstuff wrote:

Bluestribute wrote:

Everyone seems to get genders wrong. Lets say, if your name is Bluestribute, your a boy, and everyone else if just "them"     

For some reason, I've always thought of you as a boy.

Oh, but I Am

I fixed it and posted it as a project. I also fixed your level switching procedure. http://scratch.mit.edu/projects/geckofreak/181672