- This article is about the block. For more information on the value this block reports, see Y Position (value).
| Y Position | |
y position | |
| Category | Motion |
| Type | Reporter |
| Introduced in | 11Jun04 (0.x) |
The Y Position block is a Motion block and a reporter block. The block holds its sprite's Y position. This block can be displayed as a Stage Monitor.
Example Uses
As this block reports its sprite's Y position, it can be used when a script needs to know its parent sprite's Y position. There are many cases of this. For example, one could use the block to detect how far up the user is on the screen.
 Note: | These scripts only work in sprites, as the stage does not hold any Y value. |
forever wait until <(y position) > [220]> change [Hits v] by (1) end
Another use is setting values based on a movable slider. The script sets the value to the slider's Y position.
set [sliderValue v] to (y position)
Other common uses are:
- Comparing the Y position with a record to check for movement
when green flag clicked set [y_pos prev v] to (y position) forever if <not <(y_pos prev) = (y position)>> then say [My Y position moved!] for (2) seconds // if the y position moved, say something set [y_pos prev v] to (y position) end end
- Constantly storing a sprite's Y movement so it can be re-enacted later
when green flag clicked //script only works in a sprite
delete all of [x positions v]
delete all of [y positions v]
say [Move your mouse and I will reenact the movement!] for (2) seconds
say [Go!] for (1) seconds
repeat (50)//records 50 coordinates at a rate of one for every 0.1 seconds
go to (mouse-pointer v)
add (x position) to [x positions v]
add (y position) to [y positions v]
wait (0.1) seconds
end
set [counter v] to [1]
say [I will reenact it for you now!] for (2) seconds
repeat (50)
go to x:(item (counter) of [x positions v]) y:(item (counter) of [y positions v])
wait (0.1) seconds
change [counter v] by (1)
end
- Changing a sprite's speed based on its coordinates
when green flag clicked forever change y by (y position) end
Workaround
- Main article: List of Block Workarounds
The block can be simply replicated with the following block:
([y position v] of (sprite v))
However, as this workaround requires the () of () block, it cannot be used to get the Y position of the current sprite and must be done from another sprite, unless this workaround is used:
([y position v] of (join [sprite][]))
