From fa318825ef0404816728f733484caa1bc23afa53 Mon Sep 17 00:00:00 2001
From: hovertank3d <isk@lzcnt.space>
Date: Fri, 14 Nov 2025 20:05:59 +0100
Subject: george droid

---
 include/file/metadata.hpp | 54 +++++++++++++++++++++++++++++++++++++++
 include/file/world.hpp    | 65 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 119 insertions(+)
 create mode 100644 include/file/metadata.hpp
 create mode 100644 include/file/world.hpp

(limited to 'include/file')

diff --git a/include/file/metadata.hpp b/include/file/metadata.hpp
new file mode 100644
index 0000000..8b9ec4f
--- /dev/null
+++ b/include/file/metadata.hpp
@@ -0,0 +1,54 @@
+#pragma once
+
+#include "util/bitset.hpp"
+#include "util/io.hpp"
+#include <cstdint>
+#include <cstdio>
+#include <stdexcept>
+
+namespace file {
+
+enum class filetype : uint8_t {
+	Map = 1,
+	World,
+	Player,
+	TOTAL,
+};
+
+struct metadata {
+	static constexpr auto magic = 27981915666277746uL;
+	static constexpr auto magic_mask = 0xFFFFFFFFFFFFFFuL;
+	static constexpr auto size = 20;
+
+	enum class flags {
+		Favorite,
+	};
+
+	filetype ftype;
+	uint32_t revision;
+	bitset<64> flags;
+
+	template <class T>
+	ssize_t read(io::serialized_io<T>& io)
+	{
+		uint64_t filemagic;
+		auto bytes = io.read(filemagic);
+		if ((filemagic & magic_mask) != magic) {
+			throw std::runtime_error("not a relogic file");
+		}
+
+		uint8_t type = ((filemagic >> 56) & 0xFF);
+		if (type == 0 || type >= int(filetype::TOTAL)) {
+			throw std::runtime_error("unknown file type");
+		}
+
+		ftype = filetype(type);
+
+		bytes += io.read(revision);
+		bytes += io.read(flags);
+
+		return bytes;
+	}
+};
+
+}
\ No newline at end of file
diff --git a/include/file/world.hpp b/include/file/world.hpp
new file mode 100644
index 0000000..300a3e0
--- /dev/null
+++ b/include/file/world.hpp
@@ -0,0 +1,65 @@
+#pragma once
+
+#include <array>
+#include <cstdint>
+#include <cstdio>
+#include <fcntl.h>
+#include <filesystem>
+#include <fstream>
+#include <iostream>
+#include <stdexcept>
+#include <string>
+#include <vector>
+
+#include "file/metadata.hpp"
+#include "util/bitset.hpp"
+#include "util/io.hpp"
+#include "version.hpp"
+
+namespace file {
+
+class world {
+	int32_t version;
+	// metadata meta;
+
+	std::vector<uint32_t> positions;
+	bitset<0> importance;
+
+	int32_t seed;
+	std::array<uint8_t, 16> guid;
+	int32_t worldID;
+	int32_t world_left;
+	int32_t world_right;
+	int32_t world_top;
+	int32_t world_botton;
+	int32_t height;
+	int32_t width;
+
+public:
+	void load_header(std::ifstream& f)
+	{
+	}
+
+	world(std::string filename)
+	{
+		if (!std::filesystem::exists(filename)) {
+			throw std::runtime_error("file not found");
+		}
+		auto rw = io::serialized_io(io::file_io { filename });
+
+		rw.read(version);
+		if (version <= 88 || version > terraria_version) {
+			throw std::runtime_error("invalid world file version");
+		}
+		std::cout << version << std::endl;
+		metadata meta;
+
+		rw.read(meta);
+
+		if (meta.ftype != filetype::World) {
+			throw std::runtime_error("expected world file");
+		}
+	}
+};
+
+}
\ No newline at end of file
-- 
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