From 05fa7d93ce497075110dff6051f34913af5e7a83 Mon Sep 17 00:00:00 2001
From: AndrejMijic <44673317+AndrejMijic@users.noreply.github.com>
Date: Fri, 31 Jul 2020 21:00:09 +0200
Subject: [PATCH] Add monlvl.txt loader (#655)

---
 d2app/app.go                                |   1 +
 d2common/d2data/d2datadict/monster_level.go | 113 ++++++++++++++++++++
 d2common/d2resource/resource_paths.go       |   3 +-
 3 files changed, 116 insertions(+), 1 deletion(-)
 create mode 100644 d2common/d2data/d2datadict/monster_level.go

diff --git a/d2app/app.go b/d2app/app.go
index 34ab8fe3..93618096 100644
--- a/d2app/app.go
+++ b/d2app/app.go
@@ -260,6 +260,7 @@ func (a *App) loadDataDict() error {
 		{d2resource.PetType, d2datadict.LoadPetTypes},
 		{d2resource.NPC, d2datadict.LoadNPCs},
 		{d2resource.MonsterUniqueModifier, d2datadict.LoadMonsterUniqueModifiers},
+		{d2resource.MonsterLevel, d2datadict.LoadMonsterLevels},
 	}
 
 	d2datadict.InitObjectRecords()
diff --git a/d2common/d2data/d2datadict/monster_level.go b/d2common/d2data/d2datadict/monster_level.go
new file mode 100644
index 00000000..6af79c27
--- /dev/null
+++ b/d2common/d2data/d2datadict/monster_level.go
@@ -0,0 +1,113 @@
+package d2datadict
+
+import (
+	"log"
+
+	"github.com/OpenDiablo2/OpenDiablo2/d2common"
+)
+
+//MonsterLevelRecord represents a single row in monlvl.txt
+type MonsterLevelRecord struct {
+
+	//The level
+	Level int
+
+	//Values for Battle.net
+	BattleNet monsterLevelValues
+
+	//Values for ladder/single player/lan
+	Ladder monsterLevelValues
+}
+
+type monsterLevelValues struct {
+	//Armor class
+	//An AC is calcuated as (MonLvl.txt Ac * Monstats.txt AC) / 100)
+	ArmorClass          int
+	ArmorClassNightmare int
+	ArmorClassHell      int
+
+	//To hit, influences ToHit values for both attacks
+	// (MonLvl.txt TH * Monstats.txt A1TH
+	// and MonLvl.txt TH * Monstats.txt A2TH) / 100
+	ToHit          int
+	ToHitNightmare int
+	ToHitHell      int
+
+	//Hitpoints, influences both minimum and maximum HP
+	//(MonLvl.txt HP * Monstats.txt minHP) / 100
+	// and MonLvl.txt HP * Monstats.txt maxHP) / 100
+	Hitpoints          int
+	HitpointsNightmare int
+	HitpointsHell      int
+
+	//Damage, influences minimum and maximum damage for both attacks
+	//MonLvl.txt DM * Monstats.txt A1MinD) / 100
+	// and MonLvl.txt DM * Monstats.txt A1MaxD) / 100
+	// and MonLvl.txt DM * Monstats.txt A2MinD) / 100
+	// and MonLvl.txt DM * Monstats.txt A2MaxD) / 100
+	Damage          int
+	DamageNightmare int
+	DamageHell      int
+
+	//Experience points
+	//The formula is (MonLvl.txt XP * Monstats.txt Exp) / 100
+	Experience          int
+	ExperienceNightmare int
+	ExperienceHell      int
+}
+
+//MonsterLevels stores the MonsterLevelRecords
+var MonsterLevels map[int]*MonsterLevelRecord
+
+//LoadMonsterLevels loads LoadMonsterLevelRecords into MonsterLevels
+func LoadMonsterLevels(file []byte) {
+	MonsterLevels = make(map[int]*MonsterLevelRecord)
+
+	d := d2common.LoadDataDictionary(file)
+	for d.Next() {
+		record := &MonsterLevelRecord{
+			Level: d.Number("Level"),
+			BattleNet: monsterLevelValues{
+				ArmorClass:          d.Number("AC"),
+				ArmorClassNightmare: d.Number("AC(N)"),
+				ArmorClassHell:      d.Number("AC(H)"),
+				ToHit:               d.Number("TH"),
+				ToHitNightmare:      d.Number("TH (N)"),
+				ToHitHell:           d.Number("TH (H)"),
+				Hitpoints:           d.Number("HP"),
+				HitpointsNightmare:  d.Number("HP (N)"),
+				HitpointsHell:       d.Number("HP (H)"),
+				Damage:              d.Number("DM"),
+				DamageNightmare:     d.Number("DM (N)"),
+				DamageHell:          d.Number("DM (H)"),
+				Experience:          d.Number("XP"),
+				ExperienceNightmare: d.Number("XP (N)"),
+				ExperienceHell:      d.Number("XP (H)"),
+			},
+			Ladder: monsterLevelValues{
+				ArmorClass:          d.Number("L-AC"),
+				ArmorClassNightmare: d.Number("L-AC(N)"),
+				ArmorClassHell:      d.Number("L-AC(H)"),
+				ToHit:               d.Number("L-TH"),
+				ToHitNightmare:      d.Number("L-TH (N)"),
+				ToHitHell:           d.Number("L-TH (H)"),
+				Hitpoints:           d.Number("L-HP"),
+				HitpointsNightmare:  d.Number("L-HP (N)"),
+				HitpointsHell:       d.Number("L-HP (H)"),
+				Damage:              d.Number("L-DM"),
+				DamageNightmare:     d.Number("L-DM (N)"),
+				DamageHell:          d.Number("L-DM (H)"),
+				Experience:          d.Number("L-XP"),
+				ExperienceNightmare: d.Number("L-XP (N)"),
+				ExperienceHell:      d.Number("L-XP (H)"),
+			},
+		}
+		MonsterLevels[record.Level] = record
+	}
+
+	if d.Err != nil {
+		panic(d.Err)
+	}
+
+	log.Printf("Loaded %d MonsterLevel records", len(MonsterLevels))
+}
diff --git a/d2common/d2resource/resource_paths.go b/d2common/d2resource/resource_paths.go
index 333f6db0..95796d44 100644
--- a/d2common/d2resource/resource_paths.go
+++ b/d2common/d2resource/resource_paths.go
@@ -204,6 +204,7 @@ const (
 	PetType               = "/data/global/excel/pettype.txt"
 	NPC                   = "/data/global/excel/npc.txt"
 	MonsterUniqueModifier = "/data/global/excel/monumod.txt"
+	MonsterLevel          = "/data/global/excel/monlvl.txt"
 
 	// --- Animations ---
 
@@ -211,7 +212,7 @@ const (
 	AnimationData       = "/data/global/animdata.d2"
 	PlayerAnimationBase = "/data/global/CHARS"
 	MissileData         = "/data/global/missiles"
-	ItemGraphics     	= "/data/global/items"
+	ItemGraphics        = "/data/global/items"
 
 	// --- Inventory Data ---