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This article or section documents something not included in the current version of Scratch (3.0). It is only useful from a historical perspective. |
| Point Away From Edge | |
point away from edge::motion | |
| Category | Motion |
| Type | Stack |
| Introduced in | 02Dec05 (0.x) |
| Removed in | 27Jul06 (0.x) |
The point away from edge block was a stack block and a motion block. The block pointed the sprite away from the closest edge. In the Java Player, the block works as a normal if on edge, bounce block instead. It was removed in Scratch 27Jul06 for an unknown reason, and it was made an obsolete block.
This block was known as "turn away from edge" before being renamed in Scratch 16Dec05.
Example uses
Some example use cases for this block include:
- Recreating the if on edge, bounce block (as this block was not available in older versions of Scratch)
if <<not <(abs (x position):: operators) < (240)>> or <not <(abs (y position):: operators) < (180)>>>:: control
point away from edge:: motion
end
- Creating patterns with the pen
when gf clicked:: control
point in direction (140 v)
clear
pen down
forever {
move (pick random (1) to (100)) steps
point away from edge:: motion
}:: control cap
Workaround
- Main article: List of Block Workarounds
This block can be replicated with the following script:
if <not <(y position) < (0)>> then
if <((x position) - (240)) > ((y position) - (180))> then
point in direction ((0) - ([abs v] of (direction))) // top right
end
if <((x position) - (240)) < ((y position) - (180))> then
if <((-240) - (x position)) > ((y position) - (180))> then
point in direction ([abs v] of (direction)) // top middle
end
if <((-240) - (x position)) < ((y position) - (180))> then
if <(90) > ([abs v] of (direction))> then
point in direction ((180) - (direction)) // top left
end
end
end
end
if <not <(y position) > (0)>> then
if <((x position) - (240)) > ((-180) - (y position))> then
point in direction ((0) - ([abs v] of (direction))) // bottom right
end
if <((x position) - (240)) < ((-180) - (y position))> then
if <((-240) - (x position)) > ((-180) - (y position))> then
point in direction ([abs v] of (direction)) // bottom middle
end
if <((-240) - (x position)) < ((-180) - (y position))> then
if <(90) < ([abs v] of (direction))> then
point in direction ((180) - (direction)) // bottom left
end
end
end
end
This script can be condensed down at the loss of some parity:
if <(y position) > (0)> then
if <((x position) - (240)) > ((y position) - (180))> then
point in direction ((0) - ([abs v] of (direction))) // top right
else
if <((-240) - (x position)) > ((y position) - (180))> then
point in direction ([abs v] of (direction)) // top left
else
if <(90) > ([abs v] of (direction))> then
point in direction ((180) - (direction)) // top middle
end
end
end
else
if <((x position) - (240)) > ((-180) - (y position))> then
point in direction ((0) - ([abs v] of (direction))) // bottom right
else
if <((-240) - (x position)) > ((-180) - (y position))> then
point in direction ([abs v] of (direction)) // bottom left
else
if <(90) < ([abs v] of (direction))> then
point in direction ((180) - (direction)) // bottom middle
end
end
end
end
