speed.go

package api

import "math"

type Speed interface {
	vector() (x, y int)
	scalar() uint
}

type VectorSpeed struct {
	X int
	Y int
}

func (s VectorSpeed) vector() (x, y int) {
	return s.X, s.Y
}

func (s VectorSpeed) scalar() uint {
	return uint(math.Hypot(float64(s.X), float64(s.Y)))
}

type ScalarSpeed uint

func (s ScalarSpeed) vector() (x, y int) {
	scalar := int(float64(s) / math.Sqrt2)
	return scalar, scalar
}

func (s ScalarSpeed) scalar() uint {
	return uint(s)
}