wip: turn generation

internal/model/game/group.go

@@ -234,6 +234,14 @@ func (sg ShipGroup) BombingPower(st *ShipType) float64 {
 	return number.Fixed3(result)
 }
 
+// JoinEqualGroups iterates over all races and joins their respective equal ship groups.
+// Used in turn production.
+func JoinEqualGroups(g *Game) {
+	for i := range g.Race {
+		g.joinEqualGroupsInternal(i)
+	}
+}
+
 func (g *Game) JoinEqualGroups(raceName string) error {
 	ri, err := g.raceIndex(raceName)
 	if err != nil {