Mouse Y

This article is about the block. For more information on the value this block reports, see Mouse Position.

Mouse Y
mouse y
Category	Sensing
Type	Reporter
Introduced in	8Dec03 (0.x)

The Mouse Y block is a Sensing block and a Reporter block. The block holds the mouse-pointer's current Y position, also known as the vertical position of the cursor (relative to the center of the stage).

Note:

This block will report -180 if the mouse is below the stage and 180 if the mouse above the stage.

Example Uses

As this block helps report part of the cursor's position on the screen, it is useful for helping the cursor interact with the stage and sprites:

• Creating a virtual slider

when I receive [set price v]
repeat until <not <mouse down?>>
  if <(mouse y) > (100)> then
    set y to (100)
  else
    if <(mouse y) < (0)> then
      set y to (0)
    else
      set y to (mouse y)
    end
  end
  set [price v] to (mouse y)
end

• With the Mouse X block, giving the cursor's location

say (join (join (join (join [The mouse is positioned at (] (mouse x))[,])(mouse y))[).])

• Making a grid which objects can snap to

set y to ((round ((mouse y) / (20)))*(20))

• Creating interactive buttons

when gf clicked
forever
  if <mouse down?> then
    if <<(mouse x) > (50)> and <(mouse x) < (100)>> then
      if <<(mouse y) > (50)> and <(mouse y) < (100)>> then
        broadcast (Button clicked! v)
      end
    end
  end

Workaround

Main article: List of Block Workarounds

This block can be replicated with the following code:

Note:

This requires a sprite dedicated to finding the Y position of the mouse.

forever
 go to (mouse-pointer v)
 set [Mouse Y v] to (y position)

See Also

• Mouse X
• Mouse Y (value)