Add data structures, it requires tons of refactor but it's more or less working

pkg/data/npc.go

@@ -0,0 +1,115 @@
+package game
+
+import (
+	"github.com/hectorgimenez/d2go/pkg/data/npc"
+	"github.com/hectorgimenez/d2go/pkg/data/stat"
+)
+
+type NPC struct {
+	ID        npc.ID
+	Name      string
+	Positions []Position
+}
+
+type MonsterType string
+
+type Monster struct {
+	UnitID
+	Name      npc.ID
+	IsHovered bool
+	Position  Position
+	Stats     map[stat.Stat]int
+	Type      MonsterType
+}
+
+type Monsters []Monster
+type NPCs []NPC
+
+func (n NPCs) FindOne(npcid npc.ID) (NPC, bool) {
+	for _, np := range n {
+		if np.ID == npcid {
+			return np, true
+		}
+	}
+
+	return NPC{}, false
+}
+
+func (m Monsters) FindOne(id npc.ID, t MonsterType) (Monster, bool) {
+	for _, monster := range m {
+		if monster.Name == id {
+			if t == MonsterTypeNone || t == monster.Type {
+				return monster, true
+			}
+		}
+	}
+
+	return Monster{}, false
+}
+
+func (m Monsters) Enemies(filters ...MonsterFilter) []Monster {
+	monsters := make([]Monster, 0)
+	for _, mo := range m {
+		if !mo.IsMerc() {
+			monsters = append(monsters, mo)
+		}
+	}
+
+	for _, f := range filters {
+		monsters = f(monsters)
+	}
+
+	return monsters
+}
+
+type MonsterFilter func(m Monsters) []Monster
+
+func MonsterEliteFilter() MonsterFilter {
+	return func(m Monsters) []Monster {
+		var filteredMonsters []Monster
+		for _, mo := range m {
+			if mo.Type == MonsterTypeMinion || mo.Type == MonsterTypeUnique || mo.Type == MonsterTypeChampion || mo.Type == MonsterTypeSuperUnique {
+				filteredMonsters = append(filteredMonsters, mo)
+			}
+		}
+
+		return filteredMonsters
+	}
+}
+
+func MonsterAnyFilter() MonsterFilter {
+	return func(m Monsters) []Monster {
+		return m
+	}
+}
+
+func (m Monsters) FindByID(id UnitID) (Monster, bool) {
+	for _, monster := range m {
+		if monster.UnitID == id {
+			return monster, true
+		}
+	}
+
+	return Monster{}, false
+}
+
+func (m Monster) IsImmune(resist stat.Resist) bool {
+	for st, value := range m.Stats {
+		// We only want max resistance
+		if value < 100 {
+			continue
+		}
+		if resist == stat.ColdImmune && st == stat.ColdResist {
+			return true
+		}
+	}
+	return false
+}
+
+func (m Monster) IsMerc() bool {
+	if m.Name == npc.Guard {
+		return true
+	}
+
+	return false
+}