This is a collection of useful procedures for Snap! users. Version 7.0.data:image/png;base64,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 is a collection of useful procedures for Snap! users. Version 7.0. reportIsIdentical reportTextSplit reportPower reportGetImageAttribute reportNewCostumeStretched reportNewCostume getEffect doPlaySoundAtRate reportGetSoundAttribute reportNewSoundFromSamples stopFreq playFreq getPan setPan changePan doSend getLastMessage receiveCondition doCallCC reportCallCC receiveOnScene doSwitchToScene doPauseAll removeClone newClone createClone receiveOnClone reportAspect reportVideo doSetVideoTransparency doSetGlobalFlag reportDate reportGlobalFlag reportURL doForEach reportListIndex reportMap reportKeep reportFindFirst reportReshape reportNumbers getPenAttribute getPenDown floodFill write reportPenTrailsAsCostume doPasteOn doCutFrom1001cont-num1cont-num11110cont-numvalue#1aeiou1ayvaluenewdata:image/png;base64,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0Title:
Snap! Tools
Description:
This is a collection of useful procedures for Snap! users. Version 7.0.
-----------------------------------------------------------------------------------------------------------------------------------------------
Several of them have a variable named "#" or "i" at the left end of the block. This variable will be equal to the number of repetitions so far of some action (1 the first time, 2 the second, etc.) or equal to the item number in a list, when something is being done for each item of the list. The # or i can be dragged into the blocks or scripts used as inputs to this block.
-----------------------------------------------------------------------------------------------------------------------------------------------
The scripts below are just samples to show how these tools work; they aren't meant to be a useful project.Backward script:Motion Pallete:Looks Pallete:Examples demonstrating the use
of the MY [ v] block.Control Pallete:Like the built-in REPEAT () {
}
but with #.Like the built-in
IF <> THEN {
} ELSE {
}
block, but reports a value.Repetition with a renameable variable, user-settable start and end values, in ascending or descending order.Same as above, but allowing a step size other than 1 or -1.Like the built-in REPEAT UNTIL but keeps going while the condition is TRUE, not false.Like REPEAT UNTIL but runs the script once before testing the condition.Like REPEAT WHILE but runs the script once before testing the condition.barbazA common example.StageRun or call a block in a different sprite.Operators Pallete:The ones below have to do with Scratch's string data type. Instead of flat strings of characters, what they *should* have provided are the Logo word and sentence operations, so that a sentence would automatically be divided into words, rather than into characters. This is much more convenient for dealing with human language text, the usual reason for wanting strings. Note: Some of these functions are pretty slow. You might want to use a *list* of words inside your program, using sentences only for user input and display.Lists Pallete:Note that unlike some of the built-in list blocks, these create new lists, not modifying their inputs!Here are three really crucial functions of functions:Here's an example combining the above to do something more interesting: make an acronym from a phrase. These operations make many taks *really* easy to write once you get familiar with them!Like MAP, but do a script instead of reporting.CROSSMAP, used below, combines MAP and CROSSPRODUCT; the example shows that this can be really convenient, and also shows readably what CROSSPRODUCT does.... but constructing the entire list of 3x4x2=24 combinations silently and then saying them seems really sluggish. So sometimes you actually have to roll up your sleeves and write a recursive higher order procedure that has exactly the behavior you wanted. The version below doesn't generate a list of 24 combinations; it generates the combinations one at a time and processes each one (says it, in this example) as it's made. So, even though it's really just as slow, this doesn't /feel/ as slow because the slowness is distributed in between each speech balloon, instead of happening all at once. By the way, if you look inside the block you'll see that getting recursive calls to blocks with multiple-input slots right is tricky!Here's a slightly different use of the same block just to help you understand the role of the "building up from" input.