Register an event that runs when user clicks mouse.
param btn- The mouse button(s) to listen for. See
param action- The function that is run what the user clicks cetain mouse buttons.
// gives cookies on any mouse press
let cookies = 0;
onMousePress((m) => {
cookies++;
debug.log(`Cookies: ${cookies}`);
});
returns The event controller.
since v3001.0
group Input
subgroup Mouse