natiny.input.get_mouse_y_speed

Lua
natiny.input.get_mouse_y_speed() -> delta_y

Returns the vertical movement delta of the mouse cursor since the previous frame.

Returns

Type Description
number Vertical movement in drawing units since the previous frame

Example

Lua
local dy = natiny.input.get_mouse_y_speed()

Notes

  • Positive values indicate downward movement; negative values indicate upward movement.
  • The result uses the same coordinate system as drawing commands and is 0 when the cursor position does not change.