Add layers on stats and small refactor

pkg/data/data.go

@@ -118,7 +118,7 @@ type PlayerUnit struct {
 	Name     string
 	Area     area.Area
 	Position Position
-	Stats    map[stat.Stat]int
+	Stats    map[stat.ID]int
 	Skills   map[skill.Skill]int
 	States   state.States
 }

pkg/data/items.go

@@ -25,7 +25,7 @@ type Item struct {
 	Position   Position
 	Ethereal   bool
 	IsHovered  bool
-	Stats      map[stat.Stat]int
+	Stats      map[stat.ID]stat.Data
 	Identified bool
 	IsVendor   bool
 }

pkg/data/npc.go

@@ -18,7 +18,7 @@ type Monster struct {
 	Name      npc.ID
 	IsHovered bool
 	Position  Position
-	Stats     map[stat.Stat]int
+	Stats     map[stat.ID]int
 	Type      MonsterType
 }
 

pkg/data/stat/stats.go

@@ -1,9 +1,15 @@
 package stat
 
-type Stat int16
+type ID int16
+
+type Data struct {
+	ID    ID
+	Value int
+	Layer int
+}
 
 const (
-	Strength Stat = iota
+	Strength ID = iota
 	Energy
 	Dexterity
 	Vitality
@@ -364,7 +370,7 @@ const (
 	PassiveMagicPierce
 )
 
-func (s Stat) String() string {
+func (s ID) String() string {
 	switch s {
 	case Strength:
 		return "strength"