From 123f741e3f5374b93ac39887b62bfa0d66762ae2 Mon Sep 17 00:00:00 2001
From: rtk0c <mail.tianyig@gmail.com>
Date: Sun, 22 May 2022 23:05:03 -0700
Subject: Changeset: 36 Add basic machinery for levels (no saving/loading yet)

---
 source/Level.hpp | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 61 insertions(+), 3 deletions(-)

(limited to 'source/Level.hpp')

diff --git a/source/Level.hpp b/source/Level.hpp
index 5c92333..c1170a3 100644
--- a/source/Level.hpp
+++ b/source/Level.hpp
@@ -1,13 +1,71 @@
 #pragma once
 
 #include "GameObject.hpp"
+#include "RcPtr.hpp"
+#include "Uid.hpp"
+
+#include <robin_hood.h>
+#include <filesystem>
+#include <vector>
+
+// Forward declarations
+class Level;
+class LevelManager;
+
+/// Represents a seralized GameObject tree.
+class Level : public RefCounted {
+	friend class LevelManager;
+
+private:
+	struct InstanciationEntry;
+
+	LevelManager* mMan;
+	std::vector<InstanciationEntry> mEntries;
+
+public:
+	Level();
+	~Level();
+
+	void Instanciate(GameObject* relRoot) const;
+};
+
+class LevelManager {
+public:
+	static inline LevelManager* instance = nullptr;
+
+public: // NOTE: public for the editor; actual game components should not modify the map using this
+	struct LoadableObject {
+		RcPtr<Level> level; // TODO make weak pointer
+		std::filesystem::path filePath;
+		// NOTE: these fields are only loaded in dev mode
+		std::string name;
+		std::string description;
+	};
+	// We want pointer stability here for the editor (inspector object)
+	robin_hood::unordered_node_map<Uid, LoadableObject> mObjByUid;
+
+public:
+	void DiscoverFilesDesignatedLocation();
+	void DiscoverFiles(const std::filesystem::path& dir);
+
+	Level* FindLevel(const Uid& uid) const;
+	/// Get or load the given level
+	Level* LoadLevel(const Uid& uid);
+	/// Send the given level to be loaded on another thread
+	void PrepareLevel(const Uid& uid);
+
+	// These should only be used by the editor
+	LoadableObject& AddLevel(const Uid& uid);
+};
 
 class LevelWrapperObject : public GameObject {
+private:
+	RcPtr<Level> mLevel;
+
 public:
 	LevelWrapperObject(GameWorld* world);
 	~LevelWrapperObject() override;
-};
 
-/// Represents a seralized GameObject tree.
-class Level {
+	Level* GetBoundLevel() const;
+	void SetBoundLevel(Level* level);
 };
-- 
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