add CreatePlanet and put planet in solar system

models/galaxy.go

@@ -1,10 +0,0 @@
-package models
-
-type Galaxy struct {
-	SolarSystem []string
-}
-
-type SolarSystem struct {
-	Id      string
-	Planets []string // array with ids of the planets
-}

models/planet.go

@@ -1,8 +1,10 @@
 package models
 
+import "gopkg.in/mgo.v2/bson"
+
 type Planet struct {
-	Id      string
-	Size    int64 // fields
+	Id      bson.ObjectId `json:"id", bson:"_id, omitempty"`
+	Size    int64         // fields/slots
 	Name    string
-	OwnerId string
+	OwnerId bson.ObjectId
 }

models/solarsystem.go

@@ -0,0 +1,12 @@
+package models
+
+import "gopkg.in/mgo.v2/bson"
+
+const GALAXYSIZE = 50
+const SOLARSYSTEMSIZE = 15
+
+type SolarSystem struct {
+	Id       bson.ObjectId   `json:"id", bson:"_id, omitempty"`
+	Position int64           // position of the solar system in the galaxy, the maximum position is GALAXYSIZE-1
+	Planets  []bson.ObjectId // array with ids of the planets, if empty is equal to ""
+}

models/user.go

@@ -1,12 +1,14 @@
 package models
 
+import "gopkg.in/mgo.v2/bson"
+
 type Resource struct {
 	Value int64
 	Max   int64
 }
 
 type User struct {
-	Id        string
+	Id        bson.ObjectId `json:"id" bson:"_id,omitempty"`
 	Name      string
 	Password  string
 	Email     string