support multi-module (#4)

* add multimodule
* re-package modules

server/internal/model/game/game.go

@@ -0,0 +1,94 @@
+package game
+
+import (
+	"encoding/json"
+	"fmt"
+	"maps"
+
+	"galaxy/util"
+
+	"github.com/google/uuid"
+)
+
+type Float float64
+
+func F(v float64) Float {
+	return Float(v)
+}
+
+func (f Float) Add(v float64) Float {
+	return f + F(v)
+}
+
+func (f Float) F() float64 {
+	return util.Fixed12(float64(f))
+}
+
+type TechSet map[Tech]Float
+
+func (ts TechSet) Value(t Tech) float64 {
+	if v, ok := ts[t]; ok {
+		return v.F()
+	} else {
+		panic(fmt.Sprintf("TechSet: Value: %s's value not set", t.String()))
+	}
+}
+
+func (ts TechSet) Set(t Tech, v float64) TechSet {
+	m := maps.Clone(ts)
+	m[t] = F(v)
+	return m
+}
+
+func NewTechSet() TechSet {
+	return TechSet{
+		TechDrive:   1.,
+		TechWeapons: 1.,
+		TechShields: 1.,
+		TechCargo:   1.,
+	}
+}
+
+type Game struct {
+	ID         uuid.UUID   `json:"id"`
+	Turn       uint        `json:"turn"`
+	Stage      uint        `json:"stage"`
+	Map        Map         `json:"map"`
+	Race       []Race      `json:"races"`
+	Votes      Float       `json:"votes"`
+	ShipGroups []ShipGroup `json:"shipGroup,omitempty"`
+	Fleets     []Fleet     `json:"fleet,omitempty"`
+	Winner     []uuid.UUID `json:"winner,omitempty"`
+}
+
+func (g Game) Finished() bool {
+	return len(g.Winner) > 0
+}
+
+type GameMeta struct {
+	Battles  []BattleMeta `json:"battles,omitempty"`
+	Bombings []Bombing    `json:"bombings,omitempty"`
+}
+
+type BattleMeta struct {
+	Turn        uint        `json:"turn"`
+	Planet      uint        `json:"planet"`
+	BattleID    uuid.UUID   `json:"battle_id"`
+	ObserverIDs []uuid.UUID `json:"observer_ids"`
+}
+
+func (g Game) MarshalBinary() (data []byte, err error) {
+	return json.Marshal(&g)
+}
+
+func (g *Game) UnmarshalBinary(data []byte) error {
+	return json.Unmarshal(data, g)
+}
+
+func (gm GameMeta) MarshalBinary() (data []byte, err error) {
+	return json.Marshal(&gm)
+}
+
+func (gm *GameMeta) UnmarshalBinary(data []byte) error {
+	return json.Unmarshal(data, gm)
+}