Scratch

http://wiki.scratch.mit.edu/wiki/Platformer

Hope it helped! 

I'll just write them out for him 
To jump (with gravity)

when gf clicked
forever
if <<key [up arrow v] pressed?> and <touching color [#000000] ?>>//colour of platform
set [yVel v] to [14]
wait until <not <touching color [#000000] ?>>
end
repeat until <touching color [#000000] ?>
change [yVel v] by [-1]
end
if <touching color [#000000] ?>
set [yVel v] to [0]
when gf clicked
forever
change y by (yVel)

For the loosing lives if falling off platforms:

when gf clicked
go to x: (0) y: (0)
forever
if <(y position) < [-180] >//-180 is the bottom of screen
change [lives v] by [-1]
go to x: (0) y: (0)

x:0 y:0 is the spawning point unless it's a scrolling platformer where you'd have to use

set [scroll v] to [0]

Game Over Script:

forever
if <(lives) > [0]>
every script you use here

you would have to put this script around all the scripts you use so that movement is disabled if it's game over. Then you could add a game over screen which would be a seperate sprite:

when gf clicked
hide
forever
if <(lives) = [0]>
show

Thanks phirrup! Your scripts will help me a lot! 

Weird, I've used my scripts in the program and it works fine. 1 thing I forgot to mention is that you should probably include this block:

set [yVel v] to [0]

RIGHT AT THE TOP of the script, immediately below the when flag clicked block. Other things that might make it glitch:
•Colour of ground in script is not the same as the actuall colour of platform
•That block mentioned above is missing
•You've double-scripted it meaning that something is going wrong. Usually this involves wait until, repeat until or wait 1 secs blocks (As I said, I tested my jumping script and it works for me...)
•The platforms are too thin

Doubl-check the script. You could upload a test project so that we can see exactly what's wrong.

Fixed.
Basically the problem was that "Level 1-1" was broadcasted while the "Level 1-1" screen was showing, not when the level actually starts so the player was playing without the screen showing. Also, the player wasn't starting on the platform. To fix this, I changed the script for W1 to this:

when I receive [Level 1-1 v]
go to x: (-176) y: (-2)
set [yVel v] to [0]
wait (5) secs
forever
rest of script

There was another problem with the jumping. Instead of

change [yVel v] by [-1]

you included;

set [yVel v] to [-1]

You should just replace this and the jumping works much better.

1 more thing: Delete the scripts which start "when a pressed", "when d pressed" and add this instead:

when I receive [Level 1-1 v]
forever
if <key [a v] pressed?>
point in direction (-90)
move (5) steps
end
if <key [d v] pressed?>
point in direction (90)
move (5) steps
end

Insert this script and you'll see the results!

Last edited by PhirripSyrrip (2012-06-10 03:09:00)

Which script are you talking about? For the jumping script, keep your current one except change "set yvel to -1" to "change yvel to -1". Add the "go to" block I added immediately under "when I receive level 1-1" and the "wait 5 secs" block where I put it. so change those 3 things about the script, you don't need another one.

For the moving script, add the script I added but delete the two scripts that start "when a key pressed" and "when d key pressed".

I have uploaded the newest version of Platformer Boy, I couldn't tell what was wrong with the losing lives script, so maybe you could figure it out please?

-Mattkrewe

Here is a gravity script. The color in the script can be changed to whatever color your platform is. The value gravity is set to if the up arrow is pressed can also be changed. It will affect the distance jumped.

when gf clicked
set [Gravity v] to [0]
forever
  if <touching color [color of ground]>
    set [Gravity v] to [0]
    change y by [1]
    if <key [up arrow v] pressed?>
      set [Gravity v] to [the larger this number is, the higher your sprite will jump]
    end
  else
    change [Gravity v] by [-1]
    change y by (Gravity)
  end
end

Last edited by skippito (2012-06-20 17:23:29)

instead of

    if <(y position) < [-180]> 
    lose life

use

if <(y position) < [-179]>
lose life

sorry for the first version    I couldn't preveiw it