Scratch

Thescratch3 · 2013-02-09 17:24:02

I need help on making a scrolling platformer. The platforming and X scrolling works fine, but the Y scrolling I need help on. So the 1st platform always moves a little bit upwards each time the character jumps until it goes so far up that the character falls through. How can I make it so the platform does not go up with the character when the character jumps?

ErnieParke · 2013-02-09 17:34:29

Well, I'm not exactly sure seeing as I can't see your scripts, so could you show them?

Thescratch3 · 2013-02-09 17:43:17

I can't really show it to you...

if color green touching color black
set yvel to 0
change scrolly by -0.0001
if up arrow key pressed
change scrolly by -50
change yvel by 10
end of if
else
change scrolly by 10
change yvel by -1
end of if/else

That's for the character.

ErnieParke · 2013-02-09 18:08:30

Thescratch3 wrote:

I can't really show it to you...

if (color [#00f000] is touching [#000000] ?)
 set [yvel v] to (0)
 change [scrolly v] by (-0.0001)
 if ([up arrow v] key pressed?)
  change [scrolly v] by (-50)
  change [yvel v] by (10)
 end
else
 change [scrolly v] by (10)
 change [yvel v] by (-1)
end

That's for the character.

Wait; in the else part of your scripts, shouldn't you be changing (scrolly) by (yvel)?

Thescratch3 · 2013-02-09 23:00:24

ErnieParke wrote:
Thescratch3 wrote:
I can't really show it to you...
if (color [#00f000] is touching [#000000] ?)
 set [yvel v] to (0)
 change [scrolly v] by (-0.0001)
 if ([up arrow v] key pressed?)
  change [scrolly v] by (-50)
  change [yvel v] by (10)
 end
else
 change [scrolly v] by (10)
 change [yvel v] by (-1)
end
That's for the character.
Wait; in the else part of your scripts, shouldn't you be changing (scrolly) by (yvel)?

Really? Thanks, I'll try it out and let you know if it worked smile

Thescratch3 · 2013-02-10 00:18:46

It doesn't quite work, the platform goes to the very bottom (but the scrolling works).

estile · 2013-02-10 10:41:33

try changing scrolly by ylev/some number, experiment to perfect

Thescratch3 · 2013-02-10 14:50:12

estile wrote:
try changing scrolly by ylev/some number, experiment to perfect

Ok thanks! I'll try that out.

Thescratch3 · 2013-02-10 15:23:45

It has the same effect as setting the scrolly variable to the yvel variable. Is there anyway to make it so that the platform will not to go to the very bottom? Are there any moderators online to help?

ErnieParke · 2013-02-10 16:09:41

Thescratch3 wrote:
It doesn't quite work, the platform goes to the very bottom (but the scrolling works).

Well at least the scrolling works. Could you show the scrolling scripts for your platform?

Thescratch3 · 2013-02-10 18:55:20

Sure:

when i receive -----
forever
go to x: scrollx + 480 * 0 y: scrolly + 480 * 0
end of forever

when i receive ----
forever
if scrollx > 480 or scrolly > 520
hide
else
show
end of if/else

ErnieParke · 2013-02-10 19:28:41

Thescratch3 wrote:

Sure:

when i receive [---- v]
forever
go to x: ((scrollx) + ((480) * (0))) y: ((scrolly) + ((480) * (0)))

when i receive [---- v]
forever
if <<(scrollx) > (480)> or <(scrolly) < (520)>>
hide
else
show
end

Turned into scratchblocks.

Last edited by ErnieParke (2013-02-10 19:29:16)

Thescratch3 · 2013-02-10 19:39:11

ErnieParke wrote:

Thescratch3 wrote:

Sure:

when i receive [---- v]
forever
go to x: ((scrollx) + ((480) * (0))) y: ((scrolly) + ((480) * (0)))

when i receive [---- v]
forever
if <<(scrollx) > (480)> or <(scrolly) < (520)>>
hide
else
show
end

Turned into scratchblocks.

Thanks. Do you know how to fix it?

Thescratch3 · 2013-02-10 19:50:44

I'm just not going to do scrolling up and down.

ErnieParke · 2013-02-10 19:51:45

Thescratch3 wrote:
ErnieParke wrote:
Thescratch3 wrote:
Sure:
when i receive [---- v]
forever
go to x: ((scrollx) + ((480) * (0))) y: ((scrolly) + ((480) * (0)))
when i receive [---- v]
forever
if <<(scrollx) > (480)> or <(scrolly) < (520)>>
hide
else
show
end
Turned into scratchblocks.
Thanks. Do you know how to fix it?

Not entirely; just curious, what is the starting (scrolly) position of your character?

Scratch

archived forums

#1 2013-02-09 17:24:02

Making a scrolling platformer

#2 2013-02-09 17:34:29

Re: Making a scrolling platformer

#3 2013-02-09 17:43:17

Re: Making a scrolling platformer

#4 2013-02-09 18:08:30

Re: Making a scrolling platformer

Thescratch3 wrote:

#5 2013-02-09 23:00:24

Re: Making a scrolling platformer

ErnieParke wrote:

Thescratch3 wrote:

#6 2013-02-10 00:18:46

Re: Making a scrolling platformer

#7 2013-02-10 10:41:33

Re: Making a scrolling platformer

#8 2013-02-10 14:50:12

Re: Making a scrolling platformer

estile wrote:

#9 2013-02-10 15:23:45

Re: Making a scrolling platformer

#10 2013-02-10 16:09:41

Re: Making a scrolling platformer

Thescratch3 wrote:

#11 2013-02-10 18:55:20

Re: Making a scrolling platformer

#12 2013-02-10 19:28:41

Re: Making a scrolling platformer

Thescratch3 wrote:

#13 2013-02-10 19:39:11

Re: Making a scrolling platformer

ErnieParke wrote:

Thescratch3 wrote:

#14 2013-02-10 19:50:44

Re: Making a scrolling platformer

#15 2013-02-10 19:51:45

Re: Making a scrolling platformer

Thescratch3 wrote:

ErnieParke wrote:

Thescratch3 wrote:

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