Method set_button

perro_source/render_stack/perro_app/src/input/gamepad.rs:304–333

(
            &mut self,
            app: &mut S,
            gilrs: &Gilrs,
            id: GamepadId,
            button: GamepadButton,
            is_down: bool,
        )

                            app.set_gamepad_axis(index, mapped, value);
                            self.log_raw_like_state(gilrs, id, "axis_changed");
                        }
                    } else {
                        self.handle_dpad_axis(app, gilrs, id, axis, value);
                        self.log_raw_like_state(gilrs, id, "dpad_axis_changed");
                    }
                }
                _ => {}
            }
        }

        fn set_button<S: GamepadSink>(
            &mut self,
            app: &mut S,
            gilrs: &Gilrs,
            id: GamepadId,
            button: GamepadButton,
            is_down: bool,
        ) {
            let Some(index) = self.assign_index_if_unique(gilrs, id) else {
                return;
            };
            let bit = 1u32 << (button as usize);
            let current = self.down_masks.get(&id).copied().unwrap_or(0);
            let was_down = (current & bit) != 0;
            if was_down == is_down {
                return;
            }
            let mut next = current;
            if is_down {
                next |= bit;
            } else {
                next &= !bit;
            }