Method update

src/OpenLoco/src/Vehicles/Vehicle2.cpp:126–286

0x004A9B0B

    // 0x004A9B0B
    bool Vehicle2::update()
    {
        if (mode == TransportMode::air || mode == TransportMode::water)
        {
            return true;
        }
        Vehicle train(head);

        motorState = MotorState::accelerating;
        const auto speedDiff = currentSpeed - train.veh1->targetSpeed;
        if (speedDiff > 0.0_mph)
        {
            motorState = MotorState::braking;
            const auto newSpeed = currentSpeed - (currentSpeed / 64 + 0.18311_mph);
            currentSpeed = std::max(newSpeed, std::max<Speed32>(train.veh1->targetSpeed, 5.0_mph));
            return sub_4A9F20();
        }

        if (!train.head->hasVehicleFlags(VehicleFlags::manualControl))
        {
            if (speedDiff >= -1.5_mph)
            {
                motorState = MotorState::coasting;
            }
            if (currentSpeed == 0.0_mph)
            {
                motorState = MotorState::stopped;
            }
        }

        train.cars.applyToComponents([](auto& component) {
            // If the vehicle is wheel slipping, then its wheel slipping value is incremented.
            if (component.wheelSlipping != 0)
            {
                component.wheelSlipping++;
                if (component.wheelSlipping >= kWheelSlippingDuration)
                {
                    component.wheelSlipping = 0;
                }
            }
        });

        bool isOnRackRail = true; // Note has been inverted
        bool isWheelSlipping = false;
        int32_t ebp = 0;
        for (auto& car : train.cars)
        {
            auto* frontBogie = car.front;
            if (shouldStartWheelSlipping(train, *frontBogie))
            {
                car.applyToComponents([](auto& component) {
                    component.wheelSlipping = 1;
                });
            }

            if (frontBogie->wheelSlipping != 0)
            {
                isWheelSlipping = true;