Sorted out extra load

turns out we were never exiting the loop even when all bots left. Games now
shut down when there ever has been bots and they all leave (or are killed,
I think).

protocol.go

@@ -6,24 +6,12 @@ import (
 	"errors"
 )
 
-type Failure struct {
-	Reason string `json:"reason"`
-	Type   string `json:"type"`
-}
-
-func NewFailure(reason string) *Failure {
-	return &Failure{
-		Reason: reason,
-		Type:   "failure",
-	}
-}
-
 func Negociate(ws *websocket.Conn, id string, width, height float64) (*bot.Config, error) {
 	var err error
 
 	err = websocket.JSON.Send(ws, bot.NewIdRequest(id))
 	if err != nil {
-		return nil, errors.New("generic servr error")
+		return nil, errors.New("generic server error")
 	}
 
 	var clientid bot.ClientID
@@ -34,7 +22,7 @@ func Negociate(ws *websocket.Conn, id string, width, height float64) (*bot.Confi
 	if v, msg := clientid.Valid(); !v {
 		websocket.JSON.Send(
 			ws,
-			NewFailure(msg),
+			bot.NewFailure(msg),
 		)
 		return nil, errors.New(msg)
 	}
@@ -42,7 +30,7 @@ func Negociate(ws *websocket.Conn, id string, width, height float64) (*bot.Confi
 	gameParam := bot.NewGameParam(width, height)
 	err = websocket.JSON.Send(ws, gameParam)
 	if err != nil {
-		websocket.JSON.Send(ws, NewFailure("generic server error"))
+		websocket.JSON.Send(ws, bot.NewFailure("generic server error"))
 		return nil, err
 	}
 	switch clientid.Type {