Eng:Mouse Y (block)

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This eng is about the block. For more information on the value this block reports, see Mouse Y (value).

Mouse Y
Category	Sensing
Type	Reporter

The Mouse Y block is a Sensing block and a Reporter block. The block holds the mouse-pointer's current Mouse Y.

Example Uses

As this block helps report where the mouse-pointer currently is, it is useful in sensing things with the mouse.

Some common uses for the Mouse Y block:

• Helping to make 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 mouse's location

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

• Making a grid which objects snap to

set x to (([ceiling v] of ((mouse x) / (20)))*(20))

• 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

• Adding animations to the mouse

forever
  go to [mouse pointer v]
  change [color v] effect by (2)

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)