Is it possible to make a script that can detect what color is at a certain place??? If so please take your time to give me a link to a project that can detect color. I don't know if its possible without block hacking. This would help a lot in my next project that, if working properly and gets finished, would be my best one (not like any of my other projects are very good anyways). Thanks for any help…

…Or maybe scratch can add a block like this to help me????

<color at x: (x position) y: (y position) ?>

Yes it is possible http://scratch.mit.edu/projects/10941245/

drmcw wrote:

Yes it is possible http://scratch.mit.edu/projects/10941245/

Thanks soooo much!

P.S. Do you know how to change blue, red and green to an actual see-able color?

jerry1000 wrote:

Do you know how to change blue, red and green to an actual see-able color?

Not sure what you mean but http://scratch.mit.edu/projects/12713728/ provides plenty o functions for changing between the different colour representations.

drmcw wrote:

Yes it is possible http://scratch.mit.edu/projects/10941245/

Curiously, I just noticed that no longer works reliably (e.g. it fails to detect pure white)…

It appears that the blue component of “touching color?” now has the same sensitivity as the red & green components (five bits, rather than the four bits it used to have).

That means the “repeat 16” now should become “repeat 32”, like the other two, and the “change b by 16” should also become “change b by 8”, like the other two…
And it's worth noting that means it'll likely take twice as long to find the right colour - and it was pretty slow before, since it has to check so many possibilities.

Wonder when that changed, and if it was intentional…?

jerry1000 wrote:

Is it possible to make a script that can detect what color is at a certain place??? If so please take your time to give me a link to a project that can detect color. I don't know if its possible without block hacking. This would help a lot in my next project that, if working properly and gets finished, would be my best one (not like any of my other projects are very good anyways). Thanks for any help…

…Or maybe scratch can add a block like this to help me????

<touching color at x: (x position) y: (y position) ?>

It's possible, Lemme show you a visual scratchblocks thing, this detects if the sprite: ScratchCat is touching this certain color
This detects if the scratch cat is touching blue when k is pressed
This script has to be ran in the spirte that you want it to detect if its touching that color

when [k v] key pressed
if <touching color [#0000ff] ?> then
say [Scratch cat is touching blue!] for (2) secs
else
say [Scratch cat is not touching blue!] for (2) secs
end

And thats all to it! (Btw i havent tested this script, i just tried to remeber from experince and i remebered this so it should work
(EDIT: Whoops! Sorry! I used a color detection for anywhere, sorry bout' dat..)

make a sprite that is at those points. use a broadcast that tells your sprite about it.

TheLogFather wrote:

Wonder when that changed, and if it was intentional…?

Ah, ok: https://github.com/LLK/scratch-flash/issues/544

Guess that answers that then!

TheLogFather wrote:

TheLogFather wrote:

Wonder when that changed, and if it was intentional…?

Ah, ok: https://github.com/LLK/scratch-flash/issues/544

Guess that answers that then!

One step forward two steps back

or should that be

move (1) steps
move (-2) steps

?

TheLogFather wrote:

Curiously, I just noticed that no longer works reliably (e.g. it fails to detect pure white)…

…So, doesn't it work anymore?

jerry1000 wrote:

TheLogFather wrote:

Curiously, I just noticed that no longer works reliably (e.g. it fails to detect pure white)…

…So, doesn't it work anymore?

It's fine now - the recent update to v428a reverted the change.

TheLogFather wrote:

jerry1000 wrote:

TheLogFather wrote:

Curiously, I just noticed that no longer works reliably (e.g. it fails to detect pure white)…

…So, doesn't it work anymore?

It's fine now - the recent update to v428a reverted the change.

Great!

drmcw wrote:

Yes it is possible http://scratch.mit.edu/projects/10941245/

One problem. When i detect an clear white color, it always not say 255/255/255!
Anyone can help?

gilbert_given_189 wrote:

drmcw wrote:

Yes it is possible http://scratch.mit.edu/projects/10941245/

One problem. When i detect an clear white color, it always not say 255/255/255!
Anyone can help?

DadOfMrLog says in his project:
The colour checker appears to only check the first 5 bits of the red & green components, and the first 4 bits of the blue component.
This means the total checks needed to find a match is 32*32*16, rather than the expected 256*256*256 (which is >16 million).
It also means, for example, ‘white’ would match:
red=248 to 255, green=248 to 255, blue=240 to 255

ie. White is equivalent to a range of values!
If you use his color detector, white will be recorded as 248, 248, 240, which is correct within the possible accuracy of Scratch color detection.

You can modify his code to test first for 255, 255, 255 (or convert 248, 248, 240 to this value).
255, 255, 255 produces a pure white when redrawn while 248, 248, 240 is visibly off-white when redrawn.

Scratch-Minion wrote:

gilbert_given_189 wrote:

drmcw wrote:

Yes it is possible http://scratch.mit.edu/projects/10941245/

One problem. When i detect an clear white color, it always not say 255/255/255!
Anyone can help?

DadOfMrLog says in his project:
The colour checker appears to only check the first 5 bits of the red & green components, and the first 4 bits of the blue component.
This means the total checks needed to find a match is 32*32*16, rather than the expected 256*256*256 (which is >16 million).
It also means, for example, ‘white’ would match:
red=248 to 255, green=248 to 255, blue=240 to 255

ie. White is equivalent to a range of values!
If you use his color detector, white will be recorded as 248, 248, 240, which is correct within the possible accuracy of Scratch color detection.

You can modify his code to test first for 255, 255, 255 (or convert 248, 248, 240 to this value).
255, 255, 255 produces a pure white when redrawn while 248, 248, 240 is visibly off-white when redrawn.

So how to make an clean white colour?

dhdguysg wrote:

jerry1000 wrote:

Is it possible to make a script that can detect what color is at a certain place??? If so please take your time to give me a link to a project that can detect color. I don't know if its possible without block hacking. This would help a lot in my next project that, if working properly and gets finished, would be my best one (not like any of my other projects are very good anyways). Thanks for any help…

…Or maybe scratch can add a block like this to help me????

<touching color at x: (x position) y: (y position) ?>

It's possible, Lemme show you a visual scratchblocks thing, this detects if the sprite: ScratchCat is touching this certain color
This detects if the scratch cat is touching blue when k is pressed
This script has to be ran in the spirte that you want it to detect if its touching that color

when [k v] key pressed
if <touching color [#0000ff] ?> then
say [Scratch cat is touching blue!] for (2) secs
else
say [Scratch cat is not touching blue!] for (2) secs
end

And thats all to it! (Btw i havent tested this script, i just tried to remeber from experince and i remebered this so it should work
(EDIT: Whoops! Sorry! I used a color detection for anywhere, sorry bout' dat..)

remeber

gilbert_given_189 wrote:

Scratch-Minion wrote:

gilbert_given_189 wrote:

drmcw wrote:

Yes it is possible http://scratch.mit.edu/projects/10941245/

One problem. When i detect an clear white color, it always not say 255/255/255!
Anyone can help?

DadOfMrLog says in his project:
The colour checker appears to only check the first 5 bits of the red & green components, and the first 4 bits of the blue component.
This means the total checks needed to find a match is 32*32*16, rather than the expected 256*256*256 (which is >16 million).
It also means, for example, ‘white’ would match:
red=248 to 255, green=248 to 255, blue=240 to 255

ie. White is equivalent to a range of values!
If you use his color detector, white will be recorded as 248, 248, 240, which is correct within the possible accuracy of Scratch color detection.

You can modify his code to test first for 255, 255, 255 (or convert 248, 248, 240 to this value).
255, 255, 255 produces a pure white when redrawn while 248, 248, 240 is visibly off-white when redrawn.

So how to make an clean white colour?

Actually, nevermind. #f8f8f0 looks a bit clean.

Guys, presenting to real colour detector idea (slowest project ever)
Run a variable, convert it to hex and do

if <touching color (join [0x] (hex code)) ?> then

end

If this is true, you get your colour code which is your hex code!

When [scratch icon v] clicked::hat extension //always true, works for all
repeat until <you are scratcher::looks>{
if ([scratchers v] got [many v] likes::list){
think [myself v] [They really love scratch]::variables
}(Select, you are good::grey)::operators
if ([scratchers v] got [no v] likes::list){
think [myself v] [They are just jealous...]::variables
}(Select, you are bad::grey)
}::sensing

There is a workaround

repeat until <touching color [(color)] ?>>
change [color] by (1000)
end