Add support for up to 6 players.

internal/server/ws.go

@@ -28,7 +28,7 @@ type clientMessage struct {
 	Pick       int      `json:"pick"`       // tradeChoose
 	Order      []string `json:"order"`      // arrange
 	Name       string   `json:"name"`       // debugAdd
-	Pack       string   `json:"pack"`       // setPack
+	Packs      []string `json:"packs"`      // setPacks
 	Difficulty string   `json:"difficulty"` // addBot
 	Target     string   `json:"target"`     // removePlayer (player ID)
 	Card       string   `json:"card"`       // revealChoose (Cockatoo): pet card id
@@ -123,9 +123,9 @@ func (s *Server) apply(r *room, c *client, msg clientMessage) {
 	g := r.game
 	var err error
 	switch msg.Type {
-	case "setPack":
+	case "setPacks":
 		if err = requireHost(g, c.playerID); err == nil {
-			err = g.SetPack(msg.Pack)
+			err = g.SetPacks(msg.Packs)
 		}
 	case "addBot":
 		if err = requireHost(g, c.playerID); err == nil {