cmd: planet production

pkg/model/game/game.go

@@ -2,6 +2,7 @@ package game
 
 import (
 	"encoding/json"
+	"slices"
 	"strings"
 
 	"github.com/google/uuid"
@@ -33,6 +34,14 @@ func (g Game) hostRaceID(name string) (uuid.UUID, error) {
 	return uuid.Nil, e.NewHostRaceUnknownError(name)
 }
 
+func (g Game) raceIndex(name string) (int, error) {
+	i := slices.IndexFunc(g.Race, func(r Race) bool { return r.Name == name })
+	if i < 0 {
+		return i, e.NewHostRaceUnknownError(name)
+	}
+	return i, nil
+}
+
 func (g Game) opponentRaceID(name string) (uuid.UUID, error) {
 	if v, ok := g.raceID(name); ok {
 		return v, nil