View source for Eng:Experimental Blocks

{{:Eng:Experimental Blocks/translate}}
'''Experimental blocks''' were [[Eng:blocks|blocks]] that did not work well and therefore did not appear in the [[Eng:Block Palette|Block Palette]]. They were available from [[Eng:Scratch 1.0|Scratch 1.0]] through [[Eng:Scratch 1.2|1.2]]. In 1.0, they were accessed by shift-clicking the Extras menu and choosing "show experimental blocks"; in 1.1 and 1.2, through [[Eng:Shift-Click-R|Shift-Click-R]]. They are similar to the [[Eng:Motor Blocks|Motor Blocks]], which are also not displayed by default; however, the Motor blocks are fully functional.

==Sound Blocks==
[[File:Experimental sound blocks.png|frame|The 13 experimental Sound blocks.]]
There were 13 experimental [[Eng:Sound Blocks|Sound Blocks]]. All were [[Eng:Stack Blocks|Stack-shaped]]. They were:
*<sb>start movie // category=sound</sb>
*<sb>stop movie // category=sound</sb>
*<sb>change seconds by (1) // category=sound</sb>
*<sb>set seconds to (0) // category=sound</sb>
*<sb>change zoom by (10) // category=sound</sb>
*<sb>set zoom to (100) % // category=sound</sb>
*<sb>change horiz. pan by (10) // category=sound</sb>
*<sb>set horiz. pan to (0) // category=sound</sb>
*<sb>change vert. pan by (10) // category=sound</sb>
*<sb>set vert. pan to (0) // category=sound</sb>
*<sb>change fade by (10) // category=sound</sb>
*<sb>set fade to (100) % // category=sound</sb>
*<sb>set fade color to [#000000] // category=sound</sb>
The fade blocks were later changed to say "trans." (short for "transparent"){{fact|when?}}.

These blocks were likely for use with the [[Eng:Scratch MoviePlayerMorph|Scratch MoviePlayerMorph]].

==Sensing Blocks==
[[File:Experimental sensing blocks.png|frame|left|The 9 experimental Sensing blocks]]
There were 9 experimental [[Eng:Sensing Blocks|Sensing Blocks]]. 6 were [[Eng:Reporter Blocks|Reporter Blocks]], and 3 were Stacks. They were:
{{note|The experimental sensing reporters appear to be a variable in the Scratchblocks generator below due to not existing anymore.}}
*<sb>(camera motion) // category=sensing</sb>
*<sb>(camera direction) // category=sensing</sb>
*<sb>(camera relative x) // category=sensing</sb>
*<sb>(camera relative y) // category=sensing</sb>
*<sb>(camera absolute x) // category=sensing</sb>
*<sb>(camera absolute y) // category=sensing</sb>
[[File:Experimental sensing readouts.png|thumb|The readouts of the reporter blocks, all showing "a ScratchSpriteMorph()".]]
*<sb>track motion // category=sensing</sb>
*<sb>track color // category=sensing</sb>
*<sb>auto calibrate red // category=sensing</sb>

These blocks appear to be intended for camera sensing, but in all versions of Scratch that include them, they do not work and their stage monitors simply display "a ScratchSpriteMorph()".
True [[Eng:Watch Me Move!|camera support]] was later added in [[Eng:Scratch 2.0|Scratch 2.0]].

==Experimental Control Blocks in 2.0==
Scratch 2.0 contains 5 extra experimental blocks not available through normal means. In alpha versions, these blocks used to be a yellow-green color. The counter blocks were introduced in the very first Scratch 2.0 (prealpha) versions, and "While ()" and "For Each () in ()" were introduced in v138.<ref>http://scratch.mit.edu/projects/25344202/#editor</ref> 1 is a reporter, 2 are stacks, and the other 2 are [[Eng:C Block|C Block]]s. They are:
*<sb>(counter) // category=control</sb> (currently called "noop" due to 2 copies of the block spec.)
*<sb>clear counter // category=control</sb>
*<sb>incr counter // category=control</sb>
*[[File:While ().png|While ()]]
*[[File:For Each () in ().png|For Each () in ()]]

The '''Counter''' reporter block reports the value how many times the "Incr Counter" block is used. If "Clear Counter" is used, the value resets to 0.

The '''Clear Counter''' block resets the counter value to 0.

The '''Incr Counter''' block increases the counter value by 1.

The '''While ()''' C block makes blocks held inside this block loop until the specified [[Eng:Boolean Block|boolean]] statement is false, which works like a [[Eng:Repeat Until () (block)|Repeat Until (Not ())]] block.<ref>http://scratch.mit.edu/projects/1179517/#editor</ref>

The '''For Each () in ()''' C block works like the [[Eng:Repeat ()|Repeat ()]] C block, except a variable that counts up each time the stack ran. For some reason, if you make a variable, a variable and the variable blocks will appear, but there are no variable choices in the block. Also, The number uses a string input instead of a number input.<ref>http://scratch.mit.edu/projects/21950622/#editor</ref>

===Workarounds===
Because of the 5 blocks' straightforward function, all of those can be replicated with the following codes:

====Counter====
<scratchblocks>(counter) // Using a variable</scratchblocks>

====Clear Counter====
<scratchblocks>set [counter v] to [0]</scratchblocks>

====Incr Counter====
<scratchblocks>change [counter v] by (1)</scratchblocks>

====While ()====
<scratchblocks>
repeat until <not <. . .>>
. . .
end
</scratchblocks>

====For Each () in ()====
<scratchblocks>
set [i v] to [0]
repeat ()
change [i v] by (1)
. . .
end
</scratchblocks>
==See Also==
*[[Eng:List of Obsolete Blocks|List of Obsolete Blocks]]

==References==
<references/>

{{Template:Removed Blocks}}
{{Template:Experimental Blocks}}
[[Category:Block Types]]