Scratch

Hello, you have quite a simple problem, the solution is to use variables to lock your levels. Make a variable called 'lock' for all the levels but level one and another called 'level'.

when you finish level 1, set level to '2' and program lock to unlock once level = 2
this is probably confusing so I'll visualise it.

if 
level
 = 2
set 
lock ▼
 to 
1
if 
lock
 = 1
if 
level 2 ▼
 touching 
mouse-pointer ▼
 and 
mouse-down?
broadcast 
level 2

Last edited by SimplyMelee (2012-07-30 04:43:07)

daniel_j wrote:

SimplyMelee wrote:

Hello, you have quite a simple problem, the solution is to use variables to lock your levels. Make a variable called 'lock' for all the levels but level one and another called 'level'.

when you finish level 1, set level to '2' and program lock to unlock once level = 2
this is probably confusing so I'll visualise it.

if 
level
 = 2
set 
lock ▼
 to 
1
if 
lock
 = 1
if 
level 2 ▼
 touching 
mouse-pointer ▼
 and 
mouse-down?
broadcast 
level 2

I fixed it for you 

when  clicked
if 
level
 = 
2
set 
lock ▼
 to 
1
if 
level
 = 
1
if 
touching 
mouse-pointer ▼
?
 and 
mouse down?
broadcast 
level 2 ▼

You forgot to add the forever loop:

when  clicked
forever
if 
level
 = 
2
set 
lock ▼
 to 
1
if 
level
 = 
1
if 
touching 
mouse-pointer ▼
?
 and 
mouse down?
broadcast 
level 2 ▼

So for every level except for level 1 I have to use this script?

daniel_j wrote:

Yes.

There are other ways. For example:

when  clicked
set 
level ▼
 to 
0
set 
lock ▼
 to 
2

if 
beat level?
 = true
 and 
lock
 = 
level
  + 
1
change 
lock ▼
 by 
1

if 
touching 
mouse pointer ▼
?
 and 
mouse down?
if 
lock
 = 1
set 
level ▼
 to 
2
broadcast 
Start level! ▼

if 
touching 
mouse pointer ▼
?
 and 
mouse down?
if 
lock
 = 2
nothing
else
set 
level ▼
 to 
2
broadcast 
Start level! ▼

if 
touching 
mouse pointer ▼
?
 and 
mouse down?
if 
lock
 = 3
nothing
else
set 
level ▼
 to 
3
broadcast 
Start level! ▼

Last edited by ErnieParke (2012-07-30 10:14:44)

Try adding an if into your script. For example:

when I receive 
level 2 ▼
if 
level
 = 
1
change 
level ▼
 by 
1
when I receive 
level 3 ▼
if 
level
 = 
2
change 
level ▼
 by 
1

Last edited by ErnieParke (2012-07-30 11:22:02)

shrey15 wrote:

Thanks a lot. I didn't even think of that. That really helps. Now I understand what my script was missing. I have another question. I have the script for the moving platform (thanks to a person's scratch project). But when I move on the moving platform, I go through it. Can you help me with the script to be able to move around on a moving platform?
This is the script I currently have to be able to stand on a moving platform:

when  clicked
forever
wait until 
touching 
moving platform ▼
?
set 
attached to ▼
 to 
moving platform
wait until 
not
touching 
moving platform ▼
?
set 
attached to ▼
 to 
 
when  clicked
set 
attached to ▼
 to 
 
forever
wait until 
not
attached to
=
 
set 
last x ▼
 to 
x position ▼
 of 
attached to
set 
last y ▼
 to 
y position ▼
 of 
attached to
repeat until 
attached to
=
 
go to x: 
x position
+
x position ▼
 of 
attached to
-
last x
 y: 
y position
+
y position ▼
 of 
attached to
-
last y
set 
last x ▼
 to 
x position ▼
 of 
attached to
set 
last y ▼
 to 
y position ▼
 of 
attached to
wait 
0.2
 secs

Here is the website from which I got the script from: http://scratch.mit.edu/projects/JSO/1105685

Can you tell me how to modify this so my character can also move while standing on the platform?

Try changing your script so that it looks like this:

when  clicked
forever
wait until 
touching 
moving platform ▼
?
set 
attached to ▼
 to 
moving platform
wait until 
not
touching 
moving platform ▼
?
set 
attached to ▼
 to 
0
when  clicked
set 
attached to ▼
 to 
0
forever
if
not
attached to
=
0
set 
last x ▼
 to 
x position ▼
 of 
attached to
set 
last y ▼
 to 
y position ▼
 of 
attached to
repeat until 
attached to
=
0
go to x: 
x position
+
x position ▼
 of 
attached to
-
last x
 y: 
y position
+
y position ▼
 of 
attached to
-
last y
set 
last x ▼
 to 
x position ▼
 of 
attached to
set 
last y ▼
 to 
y position ▼
 of 
attached to
wait 
0.2
 secs

Last edited by ErnieParke (2012-07-30 13:20:31)

shrey15 wrote:

I tried but it still doesn't work. I just put my project online so you can download the scripts and see what's wrong.

Here is the link:
http://www.scratch.mit.edu/projects/shrey15/2704600

That should help a lot. Anyway, I'll look at your project, though not today due to the fact that I've used up all of my computer time, but maybe I'll get an extension. I'll upload an updated version of your project in up to two days from now.

shrey15 wrote:

Thanks for the help.

Your welcome.
De nado.

Last edited by ErnieParke (2012-07-30 14:05:01)

mwiedmann wrote:

It sounds like you solved it, but on your level selection question I think your code might be simplified if you used a list to keep track of the locked status for each level.

Start by creating a list (levelList) and filling it with a 0 for each level except for the 1st level (since it will start unlocked). Add an extra 0 at the end so your last level can signal when it has been cleared as well. Each level now has a spot in the list to track its status.

When a level is completed, use "replace item (level+1) of levelList with 1". (level+1) will cause the next levels status to change to 1 in the list.

Now in you level selection screen, each level (which I assume is a sprite) will just have to check it's place in the list to see if it should show or not.

I like the list because you just have 1 data structure to track everything. You can also use numbers other than 0 and 1 to represent other statuses of the levels. Maybe the user completed the level but didn't get all the stars or whatever. The level is cleared but maybe you show it in Red because they didn't fully complete it. You would put a 2 in the list for that set.

You could just use one variable to tell what is the highest level unlocked. Other than that, I like your idea, but I don't think that Shrey15 will be implementing stars into his levels.

ErnieParke wrote:

That should help a lot. Anyway, I'll look at your project, though not today due to the fact that I've used up all of my computer time, but maybe I'll get an extension. I'll upload an updated version of your project in up to two days from now.

When you upload the updated version, can you post the website to it?

ErnieParke wrote:

shrey15 wrote:

ErnieParke wrote:

That should help a lot. Anyway, I'll look at your project, though not today due to the fact that I've used up all of my computer time, but maybe I'll get an extension. I'll upload an updated version of your project in up to two days from now.

When you upload the updated version, can you post the website to it?

Sure, I can. It shouldn't be too hard to do that. Just curious, do you know how to get a smiley into a comment? Kind of like this:    Thanks!

I just made my first smiley!

63 sprites and 342 scripts!
I need to do some serious simplifying...