From 3fe57700a553fb5954d1af112ac33663acd874f8 Mon Sep 17 00:00:00 2001
From: dk <dknuth0101@gmail.com>
Date: Sun, 21 Jun 2020 15:48:53 -0700
Subject: [PATCH] adding loader for level maze details (#377)

---
 d2common/d2data/d2datadict/level_maze.go | 56 ++++++++++++++++++++++++
 d2common/d2resource/resource_paths.go    |  2 +
 main.go                                  |  1 +
 3 files changed, 59 insertions(+)
 create mode 100644 d2common/d2data/d2datadict/level_maze.go

diff --git a/d2common/d2data/d2datadict/level_maze.go b/d2common/d2data/d2datadict/level_maze.go
new file mode 100644
index 00000000..53103a79
--- /dev/null
+++ b/d2common/d2data/d2datadict/level_maze.go
@@ -0,0 +1,56 @@
+package d2datadict
+
+import (
+	"log"
+
+	"github.com/OpenDiablo2/OpenDiablo2/d2common"
+)
+
+type LevelMazeDetailsRecord struct {
+	// descriptive, not loaded in game. Corresponds with Name field in
+	// Levels.txt
+	Name string // Name
+
+	// ID from Levels.txt
+	// NOTE: Cave 1 is the Den of Evil, its associated treasure level is quest
+	// only.
+	LevelId int // Level
+
+	// the minimum number of .ds1 map sections that will make up the maze in
+	// Normal, Nightmare and Hell difficulties.
+	NumRoomsNormal    int // Rooms
+	NumRoomsNightmare int // Rooms(N)
+	NumRoomsHell      int // Rooms(H)
+
+	// the size in the X\Y direction of any component ds1 map section.
+	SizeX int // SizeX
+	SizeY int // SizeY
+
+	// Possibly related to how adjacent .ds1s are connected with each other,
+	// but what the different values are for is unknown.
+	// Merge int // Merge
+
+	// Included in the original Diablo II beta tests and in the demo version.
+	// Beta
+}
+
+var LevelMazeDetails map[int]*LevelMazeDetailsRecord
+
+func LoadLevelMazeDetails(file []byte) {
+	dict := d2common.LoadDataDictionary(string(file))
+	numRecords := len(dict.Data)
+	LevelMazeDetails = make(map[int]*LevelMazeDetailsRecord, numRecords)
+	for idx, _ := range dict.Data {
+		record := &LevelMazeDetailsRecord{
+			Name:              dict.GetString("Name", idx),
+			LevelId:           dict.GetNumber("Level", idx),
+			NumRoomsNormal:    dict.GetNumber("Rooms", idx),
+			NumRoomsNightmare: dict.GetNumber("Rooms(N)", idx),
+			NumRoomsHell:      dict.GetNumber("Rooms(H)", idx),
+			SizeX:             dict.GetNumber("SizeX", idx),
+			SizeY:             dict.GetNumber("SizeY", idx),
+		}
+		LevelMazeDetails[record.LevelId] = record
+	}
+	log.Printf("Loaded %d LevelMazeDetails records", len(LevelMazeDetails))
+}
diff --git a/d2common/d2resource/resource_paths.go b/d2common/d2resource/resource_paths.go
index 49f8c6fa..1444f484 100644
--- a/d2common/d2resource/resource_paths.go
+++ b/d2common/d2resource/resource_paths.go
@@ -173,7 +173,9 @@ const (
 	ObjectType           = "/data/global/excel/objtype.bin"
 	LevelWarp            = "/data/global/excel/LvlWarp.bin"
 	LevelDetails         = "/data/global/excel/Levels.txt"
+	LevelMaze            = "/data/global/excel/LvlMaze.txt"
 	LevelSubstitutions   = "/data/global/excel/LvlSub.txt"
+
 	ObjectDetails        = "/data/global/excel/Objects.txt"
 	SoundSettings        = "/data/global/excel/Sounds.txt"
 	ItemStatCost         = "/data/global/excel/ItemStatCost.txt"
diff --git a/main.go b/main.go
index d2be9372..3cb85ad4 100644
--- a/main.go
+++ b/main.go
@@ -412,6 +412,7 @@ func loadDataDict() error {
 		{d2resource.DifficultyLevels, d2datadict.LoadDifficultyLevels},
 		{d2resource.AutoMap, d2datadict.LoadAutoMaps},
 		{d2resource.LevelDetails, d2datadict.LoadLevelDetails},
+		{d2resource.LevelMaze, d2datadict.LoadLevelMazeDetails},
 		{d2resource.LevelSubstitutions, d2datadict.LoadLevelSubstitutions},
 	}