fixed basic movement, now add world loading

scripts/core/PackManager.cs

@@ -0,0 +1,74 @@
+using Godot;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.Json;
+
+public partial class PackManager : Node
+{
+	public record PackManifest(int schema, string id, string name, string version, int priority);
+
+	private readonly List<(string Root, PackManifest Manifest)> _packs = new();
+
+	public override void _Ready()
+	{
+		LoadPacks("res://packs");
+		GD.Print($"Loaded packs: {string.Join(", ", _packs.Select(p => $"{p.Manifest.id}(prio={p.Manifest.priority})"))}");
+	}
+
+	public void LoadPacks(string packsRoot)
+	{
+		_packs.Clear();
+
+		if (!DirAccess.DirExistsAbsolute(packsRoot))
+		{
+			GD.PrintErr($"Packs root missing: {packsRoot}");
+			return;
+		}
+
+		using var dir = DirAccess.Open(packsRoot);
+		dir.ListDirBegin();
+		while (true)
+		{
+			var entry = dir.GetNext();
+			if (entry == "") break;
+			if (entry.StartsWith(".")) continue;
+
+			var packPath = $"{packsRoot}/{entry}";
+			if (!dir.CurrentIsDir()) continue;
+
+			var manifestPath = $"{packPath}/pack.json";
+			if (!FileAccess.FileExists(manifestPath))
+				continue;
+
+			var json = FileAccess.GetFileAsString(manifestPath);
+			var manifest = JsonSerializer.Deserialize<PackManifest>(json);
+			if (manifest == null)
+			{
+				GD.PrintErr($"Invalid pack.json: {manifestPath}");
+				continue;
+			}
+
+			_packs.Add((packPath, manifest));
+		}
+		dir.ListDirEnd();
+
+		// Sort bottom->top by priority (low first, high last)
+		_packs.Sort((a, b) => a.Manifest.priority.CompareTo(b.Manifest.priority));
+	}
+
+	/// Returns the best (topmost) existing file path for a relative path inside a pack.
+	public string? Resolve(string relativePath)
+	{
+		relativePath = relativePath.TrimStart('/');
+
+		// Highest priority pack wins -> iterate from end
+		for (int i = _packs.Count - 1; i >= 0; i--)
+		{
+			var candidate = $"{_packs[i].Root}/{relativePath}";
+			if (FileAccess.FileExists(candidate))
+				return candidate;
+		}
+		return null;
+	}
+}

scripts/core/PackManager.cs.uid

@@ -0,0 +1 @@
+uid://db2vbbh5737ke