Example using user input to create a console for modules and other sets of systems

Console_input_Golang_Module.go

package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

type ScriptSettings struct {
	PlayerAmmunition int64
	PlayerHealth     int64
}

var s ScriptSettings

func SetPlayerAmmunition(ammunition int64) bool {
	s.PlayerAmmunition = ammunition
	fmt.Println("[+] Player ammo set : ", s.PlayerAmmunition)
	return true
}

func SetPlayerHealth(health int64) bool {
	s.PlayerHealth = health
	fmt.Println("[+] Player health set : ", s.PlayerHealth)
	return true
}

var Modwhat = map[string]func(int64) bool{
	"health":     SetPlayerHealth,
	"ammunition": SetPlayerAmmunition,
}

func GetHealth() string {
	return "[+] Player health is at -> " + fmt.Sprint(s.PlayerHealth)
}

func GetAmmo() string {
	return "[+] Player ammo is at -> " + fmt.Sprint(s.PlayerAmmunition)
}

var ViewWhat = map[string]func() string{
	"health": GetHealth,
	"ammo":   GetAmmo,
}

// Modules or commands that initate the modules modification
var ScriptModule = map[string]bool{
	"set": true,
}

var ViewModule = map[string]bool{
	"view": true,
}

// Start anonymous function
// give player default data
func init() {
	s.PlayerAmmunition = 50 // set ammo to 50
	s.PlayerHealth = 88     // Set health to 88
}

func main() {
	// Start console
	fmt.Println("[+] Hello there! Welcome to a base example of code changing")
	fmt.Println("[*] ------------------------------------------------------- [*]")
	fmt.Println("[+] Player health -> ", s.PlayerHealth)     // Call to output players health
	fmt.Println("[+] Player Ammo   -> ", s.PlayerAmmunition) // Call to output players ammunition
	fmt.Println("[*] ------------------------------------------------------- [*]")
	var input string
	IN := bufio.NewReader(os.Stdin) // Read from Operating System STANDARD INPUT
	fmt.Print("Command > ")         // Command prompt
	for {
		input, _ = IN.ReadString('\n')               // Tell it to read input until a new line is started
		input = strings.Replace(input, "\n", "", -1) // Replace the input state
		// check if the payload is empty
		if len(input) == 0 || len(input) != -1 {
			strindex := strings.Index(input, " ") // Index the input for the space because the second space will be the next module
			if strindex == -1 {
				continue // if the index is less than  one
			}
			if _, ok := ScriptModule[input[0:strindex]]; ok {
				splitter := strings.Split(input[strindex:], "=")
				if splitter[0] != "" && splitter[1] != "" {
					mod := Modwhat[strings.TrimSpace(splitter[0])]
					if mod != nil {
						i, _ := strconv.ParseInt(splitter[1], 0, 64)
						mod(i)
					}
				}
			}
			if _, ok := ViewModule[input[0:strindex]]; ok {
				splitter := strings.Split(input[strindex:], " ")
				if splitter[1] != "" {
					viewport := ViewWhat[splitter[1]]
					if viewport != nil {
						fmt.Println(viewport())
					}
				}
			}
		} else {
			fmt.Println("[-] No input detected....try again")
		}
		fmt.Print("Command > ") // Command prompt

	}
}