package main

import "fmt"

const usixteenbitmax float64 = 65535
const kmh_multiple float64 = 1.60934

type car struct {
    gas_pedal      uint16 //min 0 max 65535
    brake_pedal    uint16
    steering_wheel int16 // -32k - +32k
    top_speed_kmh  float64
}

func (c car) kmh() float64 {
    return float64(c.gas_pedal) * (c.top_speed_kmh / usixteenbitmax)
}

func (c *car) mph() float64 {
    c.top_speed_kmh = 500
    return float64(c.gas_pedal) * (c.top_speed_kmh / usixteenbitmax / kmh_multiple)
}

func (c *car) new_top_speed(newspeed float64) {
    c.top_speed_kmh = newspeed
}

func main() {
    a_car := car{
        gas_pedal:      24000,
        brake_pedal:    0,
        steering_wheel: 12561,
        top_speed_kmh:  225.0}

    fmt.Println(a_car.brake_pedal)
    fmt.Println(a_car.kmh())
    fmt.Println(a_car.mph())
    a_car.new_top_speed(500)
    fmt.Println(a_car.kmh())
    fmt.Println(a_car.mph())
}