Return if any of mouse buttons was clicked this frame.

Return if any of mouse buttons is down.

Return if any mouse button was pressed in current frame.

Return if any mouse button was released this frame.

Check if a given mouse button was just clicked (eg released after being pressed down)

Check if a given mouse button is down.

Check if a given mouse button was pressed in current frame.

Check if a given mouse button was released in current frame.

Calculate and return current cursor position transformed by a matrix.

Update input (called every frame).

Move the cursor to be at the center of the screen.