Scratch

64no · 2012-04-05 23:21:32

I'm wondering how to jump and land.

when up ▼
 key  pressed
change x by 10

is how you do a jump without coming down, right?

aryabtsev · 2012-04-06 00:12:42

your script makes a sprite go right...
If you want a simple jumping script, use this (you might have to adjust it for your game)

when key space ▼
 pressed
if touching ground ▼
 ?
repeat height
change y by speed
repeat until touching ground ▼
 ?
change y by -1
*speed

If you want a more realistic gravity jump script use this: (you need a yv variable)

when key space ▼
 pressed
if touching ground ▼
 ?
set yv ▼
 to 15
or however high you want to jump

when  clicked
forever
if nottouching ground ▼
 ?
change yv ▼
 by -1
or however fast you want it to go down
else
set yv ▼
 to 0
change y by yv

Hope this helped!

64no · 2012-04-06 10:07:37

Thanks! smile

64no · 2012-04-06 10:30:19

Uh, but where do you get ground? sad

64no · 2012-04-06 10:36:43

oops,this must be it:

when space ▼
 key pressed
change y by 10

pi3 · 2012-04-06 10:57:06

64no wrote:
oops,this must be it:
when space ▼
 key pressed
change y by 10

Actually, you want to make it so that where aryabtsev has touching ground, you want touching the color of the ground.

aryabtsev · 2012-04-07 12:43:15

here is a quick example of realistic gravity jumping:
http://scratch.mit.edu/projects/aryabtsev/2453368

64no · 2012-04-08 16:27:18

Wait:

when space ▼
 key pressed
if touching color EDC88C
 ?
repeat height
change y by speed
repeat until touching color EDC88C

TorbyFork234 · 2012-04-08 16:35:41

64no wrote:

Wait:

when space ▼
 key pressed
if touching color 
 ?
repeat height
change y by speed
repeat until touching color 
?
change y by -1
*speed

Scripts fixed by: TorbyFork234

64no · 2012-04-08 16:38:16

wait again:

when space ▼
 key pressed
if 
repeat height
change y by speed
repeat until 
should that be capital?
change y by

TorbyFork234 · 2012-04-08 16:45:49

64no wrote:

wait again:

when space ▼
 key pressed
if touching color 
?
repeat height
change y by speed
repeat until touching color 
?
should that be capital?
change y by -1
 * speed

Scripts fixed again by: TorbyFork234

64no · 2012-04-08 16:47:43

64no wrote:

Wait:

when space ▼
 key pressed
if touching color EDC88C
 ?
repeat height
change y by speed
repeat until touching color EDC88C

wrong;

TorbyFork234 wrote:

when space ▼
 key pressed
if touching color 
 ?
repeat height
change y by speed
repeat until touching color 
?
change y by -1
*speed

Scripts fixed by: [i][color=blue]TorbyFork234

Right.

SOScratch · 2012-04-08 16:47:56

Here is how to make your sprite jump up and go down on a flat surface:

when up arrow ▼
 key pressed
change y by 10
change y by -10

Now how to create a jumping sprite on any kind of a surface:

when up arrow ▼
 key pressed
change y by 10
repeat until touching color 
?
This needs to be the color of the ground.
change y by 1

Last edited by SOScratch (2012-04-08 16:49:12)

coolhogs · 2012-04-08 16:53:26

SOScratch wrote:
Here is how to make your sprite jump up and go down on a flat surface:
when up arrow ▼
 key pressed
change y by 10
change y by -10
Now how to create a jumping sprite on any kind of a surface:
when up arrow ▼
 key pressed
change y by 10
repeat until touching color 
?
This needs to be the color of the ground.
change y by -1

Scripts fixed by COOLHOGS
EDIT: Ahh, I messed up the topic...

mythbusteranimator · 2012-04-09 15:30:15

In order to do this without variables (which I've found can make things complicated) just do:

when key up arrow ▼
 pressed
glide 1
 secs to x x position
 y y position
 + 10
repeat until touching ground ▼
change y by -2

mythbusteranimator · 2012-04-10 10:33:11

If you use variables, you could do something like this:

when key up arrow ▼
 pressed
set variable ymax
 to 5
change x by xvel
change y by yvel
change variable yvel
 by 1
if yvel
 > ymax
set variable yvel
 to ymax
if key right arrow ▼
 pressed
set variable xmax
 to 5
change x by xvel
change variable xvel by 1
if xvel
 > xmax
set variable xvel
 to xmax
if yvel
 = ymax
change x by xvel
change y by 0-(yvel)

This will allow you to move to the right while jumping.

RedRocker227 · 2012-04-11 10:14:28

On the sprite that's jumping;

when  clicked
set y velocity
 to 0
forever
if touching color 
?
Change the colour in this block to the colour of the ground.
if key up arrow ▼
 pressed?
set y velocity ▼
 to 10
else
set y velocity ▼
 to 1
else
change y velocity ▼
 by -1
change y by y velocity

k4den · 2012-04-20 16:34:19

aryabtsev wrote:
your script makes a sprite go right...
If you want a simple jumping script, use this (you might have to adjust it for your game)
when key space ▼
 pressed
if touching ground ▼
 ?
repeat height
change y by speed
repeat until touching ground ▼
 ?
change y by -1
*speed
If you want a more realistic gravity jump script use this: (you need a yv variable)
when key space ▼
 pressed
if touching ground ▼
 ?
set yv ▼
 to 15
or however high you want to jump
when  clicked
forever
if nottouching ground ▼
 ?
change yv ▼
 by -1
or however fast you want it to go down
else
set yv ▼
 to 0
change y by yv
Hope this helped!

that doesn't work.

MoreGamesNow · 2012-04-20 18:36:37

@mythbusteranimator
Your first script doesn't allow the sprite's x-position to change while it is jumping. I don't think your second script works either.

Anyway, 64no seems to have gotten his/her answer, so it seems that additional solutions aren't really neccessary hmm

However, it you (64no) still need help, here is the wiki article on jumping; it offers scripts of varying complexity (all of which should work). smile

Unknown164 · 2012-05-06 12:16:00

Another way to do it would be this. You would have to have a variable "Gravity" set as -5 or some other negative number that controls how fast you fall. The higher the number after the minus, the faster you will fall. Use the "touching color []" block instead of the "touching ground" block. This script makes it so you can't "double jump".

[scratchblocks]
when key space v pressed
forever
if <touching ground v?>
change y by (10)
else
change y by (gravity)
end
[\scratchblocks]

If I did that right you should see a script. If not... sorry.

Unknown164

ftf841 · 2012-05-06 12:21:49

when  clicked
forever if not touching ground ▼
 ?
set Y volocity ▼
 to -1
repeat until touching ground ▼
 ?
change Y by Y volocity
change Y volocity ▼
 by 0.1

Last edited by ftf841 (2012-05-06 12:23:11)

Scratch

archived forums

#1 2012-04-05 23:21:32

How to jump and land

#2 2012-04-06 00:12:42

Re: How to jump and land

#3 2012-04-06 10:07:37

Re: How to jump and land

#4 2012-04-06 10:30:19

Re: How to jump and land

#5 2012-04-06 10:36:43

Re: How to jump and land

#6 2012-04-06 10:57:06

Re: How to jump and land

64no wrote:

#7 2012-04-07 12:43:15

Re: How to jump and land

#8 2012-04-08 16:27:18

Re: How to jump and land

#9 2012-04-08 16:35:41

Re: How to jump and land

64no wrote:

#10 2012-04-08 16:38:16

Re: How to jump and land

#11 2012-04-08 16:45:49

Re: How to jump and land

64no wrote:

#12 2012-04-08 16:47:43

Re: How to jump and land

64no wrote:

TorbyFork234 wrote:

#13 2012-04-08 16:47:56

Re: How to jump and land

#14 2012-04-08 16:53:26

Re: How to jump and land

SOScratch wrote:

#15 2012-04-09 15:30:15

Re: How to jump and land

#16 2012-04-10 10:33:11

Re: How to jump and land

#17 2012-04-11 10:14:28

Re: How to jump and land

#18 2012-04-20 16:34:19

Re: How to jump and land

aryabtsev wrote:

#19 2012-04-20 18:36:37

Re: How to jump and land

#20 2012-05-06 12:16:00

Re: How to jump and land

#21 2012-05-06 12:21:49

Re: How to jump and land

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