package main

import (
	"fmt"
	"time"
)

type SpaceObj struct {
	x  int64   // Pos x
	y  int64   // Pos y
	z  int64   // Pos z
	vx float64 // Velocity x (mm)
	vy float64 // Velocity y (mm)
	vz float64 // Velocity z (mm)
	m  int64   // mass (kg)
}

type Force struct {
	x int64
	y int64
	z int64
}

func calcAcceleration(m int64, f int64) float64 {
	return float64(f) / float64(m)
}

func main() {

	user := SpaceObj{0, 0, 0, 0, 0, 0, 52}
	vectors := []Force{{1, 0, -1}, {0, 1, 0}, {-1, 0, 0}, {-1, -1, -1}, {1, 0, 0}, {1, 0, 0}, {0, 1, -1}, {0, 1, 0}, {1, 0, 0}, {0, 0, -1}, {0, 0, 0}}

	for i, f := range vectors {
		fmt.Printf("Frame: %d; Vector: %d %d %d\n", i, f.x, f.y, f.z)

		user.vx = user.vx + calcAcceleration(user.m, f.x)
		user.vy = user.vy + calcAcceleration(user.m, f.y)
		user.vz = user.vy + calcAcceleration(user.m, f.z)

		fmt.Printf("           velocity: %f %f %f (m/s)\n", user.vx, user.vy, user.vz)

		user.x = user.x + int64(user.vx*1000)
		user.y = user.y + int64(user.vy*1000)
		user.z = user.z + int64(user.vz*1000)

		fmt.Printf("          Pos: %d x %d x %d\n", user.x, user.y, user.z)

		time.Sleep((1 * time.Second))
	}

}