You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
108 lines
2.2 KiB
Go
108 lines
2.2 KiB
Go
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"math/rand"
|
|
"net"
|
|
"os"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
)
|
|
|
|
var (
|
|
dataPath = "/projects/exo/expl.speck"
|
|
)
|
|
|
|
func log_error(template string, args ...interface{}) {
|
|
fmt.Fprint(os.Stderr, "ERROR ")
|
|
fmt.Fprintf(os.Stderr, template+"\n", args...)
|
|
}
|
|
|
|
func log_info(template string, args ...interface{}) {
|
|
fmt.Fprint(os.Stdout, "INFO ")
|
|
fmt.Fprintf(os.Stdout, template+"\n", args...)
|
|
}
|
|
|
|
func bail(status int, template string, args ...interface{}) {
|
|
if status == 0 {
|
|
fmt.Fprintf(os.Stdout, template, args...)
|
|
} else {
|
|
fmt.Fprintf(os.Stderr, template, args...)
|
|
}
|
|
os.Exit(status)
|
|
}
|
|
|
|
func handleConnection(conn *Connection) {
|
|
var mu sync.Mutex
|
|
|
|
defer conn.Close()
|
|
conn.Login()
|
|
|
|
planet, err := randomPlanet()
|
|
if err != nil {
|
|
log_error("player %s failed to get random planet: %v", conn.PlayerName(), err)
|
|
return
|
|
}
|
|
if planet.planets == 1 {
|
|
fmt.Fprintf(conn, "you are in the system %s. There is %d planet here.\n", planet.name, planet.planets)
|
|
} else {
|
|
fmt.Fprintf(conn, "you are in the system %s. There are %d planets here.\n", planet.name, planet.planets)
|
|
}
|
|
for {
|
|
line, err := conn.ReadString('\n')
|
|
switch err {
|
|
case io.EOF:
|
|
return
|
|
case nil:
|
|
break
|
|
default:
|
|
log_error("failed to read line from player %s: %v", conn.PlayerName(), err)
|
|
}
|
|
line = strings.TrimSpace(line)
|
|
parts := strings.Split(line, " ")
|
|
switch parts[0] {
|
|
case "scan":
|
|
for _, otherPlanet := range index {
|
|
if otherPlanet.name == planet.name {
|
|
continue
|
|
}
|
|
go func(p System) {
|
|
dist := planetDistance(*planet, p)
|
|
delay := time.Duration(int64(dist * 100000000))
|
|
time.Sleep(delay)
|
|
mu.Lock()
|
|
fmt.Fprintf(conn, "PONG from planet %s (%v)\n", p.name, delay)
|
|
mu.Unlock()
|
|
}(otherPlanet)
|
|
}
|
|
case "broadcast":
|
|
|
|
case "quit":
|
|
return
|
|
default:
|
|
fmt.Fprintf(conn, "hmm I'm not sure I know that one.\n")
|
|
}
|
|
}
|
|
}
|
|
|
|
func main() {
|
|
dbconnect()
|
|
rand.Seed(time.Now().UnixNano())
|
|
|
|
setupDb()
|
|
listener, err := net.Listen("tcp", ":9220")
|
|
if err != nil {
|
|
bail(E_No_Port, "unable to start server: %v", err)
|
|
}
|
|
for {
|
|
conn, err := listener.Accept()
|
|
if err != nil {
|
|
log_error("error accepting connection: %v", err)
|
|
continue
|
|
}
|
|
go handleConnection(NewConnection(conn))
|
|
}
|
|
}
|