What it does
input.mouseDelta is a value to read rather than a call: it is written without parentheses.
The API says: {x, y} this frame
Signature
input.mouseDeltaArguments
It takes none.
Example · generated
function update(dt) { const mouseDelta = input.mouseDelta;}input.mouseDelta is called with values of the shape its signature asks for. The code sits in update(dt), which the engine calls every frame: dt is the time since the last one, in seconds.