param btn- The button(s) to listen for. See

param action- The function that is run while certain gamepad buttons are held down.

// when button is being held down
onGamepadButtonDown("rtrigger", (gp) => {
    car.addForce(Vec2.fromAngle(car.angle).scale(10));
});

returns The event controller.

since v3001.0

group Input

param action- The function that is run while any gamepad buttons are held down.

// when button is being held down
onGamepadButtonDown((btn, gp) => {
    if (btn == "rtrigger") {
        car.addForce(Vec2.fromAngle(car.angle).scale(10));
    } else if (btn == "ltrigger") {
        car.addForce(Vec2.fromAngle(car.angle).scale(-5));
    }
});

returns The event controller.

since v3001.0

group Input