http://aminoapps.com/p/5hi9n

ninja1.go

package main

import (
	"fmt"
	"log"
	"os"
	"strconv"
)

type Ninja struct {
	Name    string
	Health  int64
	Verbose bool
}

func (n *Ninja) SetName(name string) {
	n.Name = name
}

func (n *Ninja) SetHealth(h int64) {
	n.Health = h
}

func (n *Ninja) SetHealthS(h string) error {
	health, err := strconv.ParseInt(h, 10, 0)
	if err != nil {
		return err
	}
	n.SetHealth(health)
	return nil
}

func (n *Ninja) Damage(amount int64) {
	n.Health = n.Health - amount
}

func (n *Ninja) Heal(amount int64) {
	n.Health = n.Health + amount
}

func (n *Ninja) say(s string) {
	fmt.Printf("%s: %s\n", n.Name, s)
}

func (n *Ninja) Stats() {
	fmt.Printf("\tName: %s\n\t-> Health: %d\n", n.Name, n.Health)
}

func (n *Ninja) end() bool {
	if n.Health <= 0 {
		n.Stats()
		fmt.Println("You cannot go further, your HP reached 0!")
		return false
	}
	if n.Verbose {
		n.Stats()
	}
	return true
}

func (n *Ninja) Shout() bool {
	n.say("I am hiding, huehuehue!")
	n.Damage(5)
	return n.end()
}

func (n *Ninja) Eat() bool {
	n.say("I am eating! Nom nom nom!")
	n.Heal(10)
	return n.end()
}

func (n *Ninja) Fight() bool {
	n.say("Yee Samurai, I'll get you! Kyah!")
	n.Damage(20)
	return n.end()
}

func (n *Ninja) Conquer() bool {
	n.say("Yee castle is now mine!")
	n.Damage(30)
	return n.end()
}

func setNinjaHealth(n *Ninja, s *string) {
	for {
		fmt.Print("Ninja health: ")
		fmt.Scanln(s)
		err := n.SetHealthS(*s)
		if err != nil {
			log.Println(err)
		} else {
			break
		}
	}
}

func main() {
	var ninja Ninja
	ninja.Verbose = true
	var input string
	fmt.Print("Ninja name: ")
	fmt.Scanln(&input)
	ninja.SetName(input)
	setNinjaHealth(&ninja, &input)
	if !ninja.Shout() {
		os.Exit(1)
	}
	if !ninja.Eat() {
		os.Exit(1)
	}
	if !ninja.Eat() {
		os.Exit(1)
	}
	if !ninja.Fight() {
		os.Exit(1)
	}
	if !ninja.Shout() {
		os.Exit(1)
	}
	if !ninja.Eat() {
		os.Exit(1)
	}
	if !ninja.Conquer() {
		os.Exit(1)
	}
}