new game, fs repo layer

pkg/game/game.go

@@ -1,6 +1,87 @@
 package game
 
-import "math"
+import (
+	"fmt"
+	"math"
+
+	"github.com/google/uuid"
+	"github.com/iliadenisov/galaxy/pkg/generator"
+	"github.com/iliadenisov/galaxy/pkg/model/game"
+)
+
+type Repo interface {
+	Persist(game.Game) error
+}
+
+func NewGame(r Repo, races []string) (uuid.UUID, error) {
+	id, err := uuid.NewRandom()
+	if err != nil {
+		return uuid.Nil, fmt.Errorf("generate uuid: %s", err)
+	}
+	m, err := generator.Generate(func(ms *generator.MapSetting) {
+		ms.Players = uint32(len(races))
+	})
+	if err != nil {
+		return uuid.Nil, fmt.Errorf("generate map: %s", err)
+	}
+	if len(races) != len(m.HomePlanets) {
+		return uuid.Nil, fmt.Errorf("generate map: wrong number of home planets: %d, expected: %d ", len(m.HomePlanets), len(races))
+	}
+	g := &game.Game{
+		ID:   id,
+		Race: make([]game.Race, len(races)),
+	}
+
+	gameMap := &game.Map{
+		Width:  m.Width,
+		Height: m.Height,
+		Planet: make([]game.Planet, 0),
+	}
+	for hw := range races {
+		g.Race[hw] = game.Race{
+			Name:    races[hw],
+			Votes:   1, // TODO: check with rules
+			VoteFor: races[hw],
+			Drive:   1,
+			Weapons: 1,
+			Shields: 1,
+			Cargo:   1,
+		}
+		gameMap.Planet = append(gameMap.Planet, game.Planet{
+			Owner:      races[hw],
+			X:          m.HomePlanets[hw].HW.Position.X,
+			Y:          m.HomePlanets[hw].HW.Position.Y,
+			Size:       m.HomePlanets[hw].HW.Size,
+			Resources:  m.HomePlanets[hw].HW.Resources,
+			Production: game.ProductionCapital.AsType(""), // TODO: check default production
+		})
+		for dw := range m.HomePlanets[hw].DW {
+			gameMap.Planet = append(gameMap.Planet, game.Planet{
+				X:          m.HomePlanets[hw].DW[dw].Position.X,
+				Y:          m.HomePlanets[hw].DW[dw].Position.Y,
+				Size:       m.HomePlanets[hw].DW[dw].Size,
+				Resources:  m.HomePlanets[hw].DW[dw].Resources,
+				Production: game.ProductionNone.AsType(""),
+			})
+		}
+	}
+	for i := range m.FreePlanets {
+		gameMap.Planet = append(gameMap.Planet, game.Planet{
+			X:          m.FreePlanets[i].Position.X,
+			Y:          m.FreePlanets[i].Position.Y,
+			Size:       m.FreePlanets[i].Size,
+			Resources:  m.FreePlanets[i].Resources,
+			Production: game.ProductionNone.AsType(""),
+		})
+	}
+
+	g.Map = *gameMap
+
+	if err := r.Persist(*g); err != nil {
+		return uuid.Nil, fmt.Errorf("persist: %s", err)
+	}
+	return g.ID, nil
+}
 
 func (r Race) FlightDistance() float64 {
 	return r.Drive * 40