Added docs around MapLock, change visibility of methods

Removed unused global

bserv/main.go

@@ -21,8 +21,6 @@ var netprofile = flag.Bool("netprof", false, "if specified will run with net/htt
 var verbose = flag.Bool("verbose", false, "")
 var config = flag.String("config", "~/.config/hackerbots/config.json", "location of config file")
 
-var delta float32
-
 func main() {
 	log.SetFlags(log.Ldate | log.Ltime | log.Lshortfile)
 	log.Printf("Starting Server...")
@@ -49,8 +47,6 @@ func main() {
 		log.Fatal(err)
 	}
 
-	delta = (float32(conf.Tick) / 1000.0) * float32(conf.Timescale)
-
 	sm := http.NewServeMux()
 
 	c := botserv.Controller{