What distinguishes GetMouseButtonUp from GetMouseButton in Unity?

GetMouseButtonUp and GetMouseButton serve different purposes in Unity's input handling. GetMouseButton returns true for the duration that a specified mouse button is held down. This means that if the player keeps the button pressed, this function will continue to return true every frame until the button is released.

In contrast, GetMouseButtonUp is specifically designed to detect the moment when a mouse button is released. It returns true only during the frame in which the button transitions from being pressed to released, effectively signaling a single action that occurs once the button is let go. This distinction allows programmers to implement different behaviors depending on whether they want to track continuous input (like holding down a key) or discrete input (like pressing and releasing).

The option reflecting this behavior highlights that GetMouseButton returns true if the mouse button is held down, which reinforces the continuous tracking of input. This understanding is critical for creating responsive and interactive gameplay mechanics in Unity.