Scratch

MITscratcher · 2008-01-02 19:58:52

I have used Scratch for over 2 years now, and have learned a lot. This is the forum for all those kids (or any age) who are new to scratch, old to scratch, or just have a question. Share ideas, comments, and projects, ect. Doesnt matter how simple or complex, Anything will do!

and remember,
SCRATCH ON!
____________________________________________________________________________________
Ps. This is my first forum subject, so I don't know exactly how to use it. :p

MITscratcher · 2008-01-02 20:14:34

So far I have got no replies (which is a disappointment), But if anyone does care to reply, I have a question for you!

I have always wondered, In my favorite category (Numbers), I just cannot seem to figure out what "abs" means, Can anyone tell me the definition?

[blocks]<abs( [/blocks]

archmage · 2008-01-02 20:22:12

The abs block turns a negative number into a positive number and positive numbers remain positive.

Jman720 · 2008-01-02 20:22:57

I do not know either, but I do have a question, I cannot seem to make gravity or scrolling. Can you help me???

archmage · 2008-01-02 20:29:51

Jman720 wrote:
I do not know either, but I do have a question, I cannot seem to make gravity or scrolling. Can you help me???

For gravity see my project gravity done right.

For scrolling go to http://scratch.mit.edu/forums/viewtopic.php?id=2440

MITscratcher · 2008-01-02 20:44:12

I have got to admit, I am still in the process of learning certain things in scratch, (such as scrolling and gravity), but my goal is to soon master it. My suggestion is to play around with variables a little bit, and try to work more with increasing variables, and decreasing variables, at a certain point. Scrolling, May be a bit harder, but may have to do with being based on another sprites position (?). Although I may not know as much about these topics, you should defiantly check out archmage's links; They may be helpful.

archmage · 2008-01-02 20:54:37

Really, scratch makes scrolling A LOT harder than it should be because you can't put sprites outside the stage. I am pretty sure that the people who developed scratch never thought that scrolling projects might become popular.

Last edited by archmage (2008-01-02 20:54:58)

MITscratcher · 2008-01-02 21:30:23

I completely agree, It makes it more difficult because we don't have a very big workspace. I am guessing you would need a variable that remembers how far the sprite has gone off the stage (supposedly).

MITscratcher · 2008-01-03 16:30:53

Hello everybody! Does anyone have a question or suggestion for future games? I'm stuck for topics!

MITscratcher · 2008-01-06 19:49:27

I was hoping for more people to ask or chat in here, but I may delete this forum if it is possible (If I don't get enough posts).

funkymonkey · 2008-01-06 19:58:31

archmage wrote:
The abs block turns a negative number into a positive number and positive numbers remain positive.

it stands for absolute value. smile is it a trig function?

archmage · 2008-01-06 20:06:13

funkymonkey wrote:
archmage wrote:
The abs block turns a negative number into a positive number and positive numbers remain positive.
it stands for absolute value. is it a trig function?

It's not a trig function.

funkymonkey · 2008-01-07 17:44:01

archmage wrote:
It's not a trig function.

oh. i thought that all of the things on that block were trig functions. i guess not.

kevin_karplus · 2008-01-07 22:56:05

They are all functions, but only sin,cos,tan,asin,acos,atan are trigonometric functions.

Paddle2See · 2008-01-08 04:04:09

To expand a little, Trigonometric functions are those dealing with Triangle measurement. See Wikopedia

http://en.wikipedia.org/wiki/Trigonometry

the trigonometric functions in Scratch are:
sin - Sine
cos - Cosine
tan - Tangent
asin - Arcsine (inverse Sine)
acos - Arccosine (inverse Cosine)
atan - Arctangent (inverse Tangent)

The other functions in Scratch are:
abs - Absolute value (distance from zero on the number line)
sqrt - Square root
ln - Natural logarithm (Euler's constant based logarithm)
log - Base 10 logarithm
e^ - Raising Euler's constant to a power (inverse of ln)
10^ - Rasing 10 to a power (inverse of log)

The functions that are most useful to Scratchers (this is open to debate I'm sure) are sin, cos, tan, sqrt, abs. Now that you know what the full names are, you can look them up in Wikopedia, if you are interested.

Last edited by Paddle2See (2008-01-08 04:06:33)

Scratch

archived forums

#1 2008-01-02 19:58:52

Ask and Answer

#2 2008-01-02 20:14:34

Re: Ask and Answer

#3 2008-01-02 20:22:12

Re: Ask and Answer

#4 2008-01-02 20:22:57

Re: Ask and Answer

#5 2008-01-02 20:29:51

Re: Ask and Answer

Jman720 wrote:

#6 2008-01-02 20:44:12

Re: Ask and Answer

#7 2008-01-02 20:54:37

Re: Ask and Answer

#8 2008-01-02 21:30:23

Re: Ask and Answer

#9 2008-01-03 16:30:53

Re: Ask and Answer

#10 2008-01-06 19:49:27

Re: Ask and Answer

#11 2008-01-06 19:58:31

Re: Ask and Answer

archmage wrote:

#12 2008-01-06 20:06:13

Re: Ask and Answer

funkymonkey wrote:

archmage wrote:

#13 2008-01-07 17:44:01

Re: Ask and Answer

archmage wrote:

#14 2008-01-07 22:56:05

Re: Ask and Answer

#15 2008-01-08 04:04:09

Re: Ask and Answer

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