diff --git a/sfw/core/thread.cpp b/sfw/core/thread.cpp
new file mode 100644
index 0000000..a761ccb
--- /dev/null
+++ b/sfw/core/thread.cpp
@@ -0,0 +1,110 @@
+/*************************************************************************/
+/*  thread.cpp                                                           */
+/*  From https://github.com/Relintai/pandemonium_engine (MIT)            */
+/*************************************************************************/
+
+#include "thread.h"
+
+#if !defined(NO_THREADS)
+
+#include "core/error_macros.h"
+#include "core/safe_refcount.h"
+
+Error (*Thread::set_name_func)(const String &) = nullptr;
+void (*Thread::set_priority_func)(Thread::Priority) = nullptr;
+void (*Thread::init_func)() = nullptr;
+void (*Thread::term_func)() = nullptr;
+
+uint64_t Thread::_thread_id_hash(const std::thread::id &p_t) {
+	static std::hash<std::thread::id> hasher;
+	return hasher(p_t);
+}
+
+Thread::ID Thread::main_thread_id = _thread_id_hash(std::this_thread::get_id());
+static thread_local Thread::ID caller_id = 0;
+static thread_local bool caller_id_cached = false;
+
+void Thread::_set_platform_funcs(
+		Error (*p_set_name_func)(const String &),
+		void (*p_set_priority_func)(Thread::Priority),
+		void (*p_init_func)(),
+		void (*p_term_func)()) {
+	Thread::set_name_func = p_set_name_func;
+	Thread::set_priority_func = p_set_priority_func;
+	Thread::init_func = p_init_func;
+	Thread::term_func = p_term_func;
+}
+
+void Thread::callback(Thread *p_self, const Settings &p_settings, Callback p_callback, void *p_userdata) {
+	caller_id = _thread_id_hash(p_self->thread.get_id());
+	caller_id_cached = true;
+
+	if (set_priority_func) {
+		set_priority_func(p_settings.priority);
+	}
+	if (init_func) {
+		init_func();
+	}
+
+	p_callback(p_userdata);
+
+	if (term_func) {
+		term_func();
+	}
+}
+
+void Thread::start(Thread::Callback p_callback, void *p_user, const Settings &p_settings) {
+	if (id != _thread_id_hash(std::thread::id())) {
+#ifdef DEBUG_ENABLED
+		WARN_PRINT("A Thread object has been re-started without wait_to_finish() having been called on it. Please do so to ensure correct cleanup of the thread.");
+#endif
+		thread.detach();
+		std::thread empty_thread;
+		thread.swap(empty_thread);
+	}
+	std::thread new_thread(&Thread::callback, this, p_settings, p_callback, p_user);
+	thread.swap(new_thread);
+	id = _thread_id_hash(thread.get_id());
+}
+
+bool Thread::is_started() const {
+	return id != _thread_id_hash(std::thread::id());
+}
+
+void Thread::wait_to_finish() {
+	if (id != _thread_id_hash(std::thread::id())) {
+		ERR_FAIL_COND_MSG(id == get_caller_id(), "A Thread can't wait for itself to finish.");
+		thread.join();
+		std::thread empty_thread;
+		thread.swap(empty_thread);
+		id = _thread_id_hash(std::thread::id());
+	}
+}
+
+Error Thread::set_name(const String &p_name) {
+	if (set_name_func) {
+		return set_name_func(p_name);
+	}
+
+	return ERR_UNAVAILABLE;
+}
+
+Thread::~Thread() {
+	if (id != _thread_id_hash(std::thread::id())) {
+#ifdef DEBUG_ENABLED
+		LOG_WARN("A Thread object has been destroyed without wait_to_finish() having been called on it. Please do so to ensure correct cleanup of the thread.");
+#endif
+		thread.detach();
+	}
+}
+
+Thread::ID Thread::get_caller_id() {
+	if (likely(caller_id_cached)) {
+		return caller_id;
+	} else {
+		caller_id = _thread_id_hash(std::this_thread::get_id());
+		caller_id_cached = true;
+		return caller_id;
+	}
+}
+#endif
diff --git a/sfw/core/thread.h b/sfw/core/thread.h
new file mode 100644
index 0000000..a8b3276
--- /dev/null
+++ b/sfw/core/thread.h
@@ -0,0 +1,95 @@
+#ifndef THREAD_H
+#define THREAD_H
+
+/*************************************************************************/
+/*  thread.h                                                             */
+/*  From https://github.com/Relintai/pandemonium_engine (MIT)            */
+/*************************************************************************/
+
+#include "core/typedefs.h"
+
+#if !defined(NO_THREADS)
+#include "core/safe_refcount.h"
+#include <thread>
+#endif
+
+class String;
+
+class Thread {
+public:
+	typedef void (*Callback)(void *p_userdata);
+
+	typedef uint64_t ID;
+
+	enum Priority {
+		PRIORITY_LOW,
+		PRIORITY_NORMAL,
+		PRIORITY_HIGH
+	};
+
+	struct Settings {
+		Priority priority;
+		Settings() { priority = PRIORITY_NORMAL; }
+	};
+
+private:
+#if !defined(NO_THREADS)
+	friend class Main;
+
+	static ID main_thread_id;
+
+	static uint64_t _thread_id_hash(const std::thread::id &p_t);
+
+	ID id = _thread_id_hash(std::thread::id());
+	std::thread thread;
+
+	static void callback(Thread *p_self, const Settings &p_settings, Thread::Callback p_callback, void *p_userdata);
+
+	static Error (*set_name_func)(const String &);
+	static void (*set_priority_func)(Thread::Priority);
+	static void (*init_func)();
+	static void (*term_func)();
+#endif
+
+public:
+	static void _set_platform_funcs(
+			Error (*p_set_name_func)(const String &),
+			void (*p_set_priority_func)(Thread::Priority),
+			void (*p_init_func)() = nullptr,
+			void (*p_term_func)() = nullptr);
+
+#if !defined(NO_THREADS)
+	_FORCE_INLINE_ ID get_id() const { return id; }
+	// get the ID of the caller thread
+	static ID get_caller_id();
+	// get the ID of the main thread
+	_FORCE_INLINE_ static ID get_main_id() { return main_thread_id; }
+
+	_FORCE_INLINE_ static bool is_main_thread() { return get_caller_id() == main_thread_id; }
+
+	static Error set_name(const String &p_name);
+
+	void start(Thread::Callback p_callback, void *p_user, const Settings &p_settings = Settings());
+	bool is_started() const;
+	///< waits until thread is finished, and deallocates it.
+	void wait_to_finish();
+
+	~Thread();
+#else
+	_FORCE_INLINE_ ID get_id() const { return 0; }
+	// get the ID of the caller thread
+	_FORCE_INLINE_ static ID get_caller_id() { return 0; }
+	// get the ID of the main thread
+	_FORCE_INLINE_ static ID get_main_id() { return 0; }
+
+	_FORCE_INLINE_ static bool is_main_thread() { return true; }
+
+	static Error set_name(const String &p_name) { return ERR_UNAVAILABLE; }
+
+	void start(Thread::Callback p_callback, void *p_user, const Settings &p_settings = Settings()) {}
+	bool is_started() const { return false; }
+	void wait_to_finish() {}
+#endif
+};
+
+#endif // THREAD_H
diff --git a/sfwl/core/thread.cpp b/sfwl/core/thread.cpp
new file mode 100644
index 0000000..a761ccb
--- /dev/null
+++ b/sfwl/core/thread.cpp
@@ -0,0 +1,110 @@
+/*************************************************************************/
+/*  thread.cpp                                                           */
+/*  From https://github.com/Relintai/pandemonium_engine (MIT)            */
+/*************************************************************************/
+
+#include "thread.h"
+
+#if !defined(NO_THREADS)
+
+#include "core/error_macros.h"
+#include "core/safe_refcount.h"
+
+Error (*Thread::set_name_func)(const String &) = nullptr;
+void (*Thread::set_priority_func)(Thread::Priority) = nullptr;
+void (*Thread::init_func)() = nullptr;
+void (*Thread::term_func)() = nullptr;
+
+uint64_t Thread::_thread_id_hash(const std::thread::id &p_t) {
+	static std::hash<std::thread::id> hasher;
+	return hasher(p_t);
+}
+
+Thread::ID Thread::main_thread_id = _thread_id_hash(std::this_thread::get_id());
+static thread_local Thread::ID caller_id = 0;
+static thread_local bool caller_id_cached = false;
+
+void Thread::_set_platform_funcs(
+		Error (*p_set_name_func)(const String &),
+		void (*p_set_priority_func)(Thread::Priority),
+		void (*p_init_func)(),
+		void (*p_term_func)()) {
+	Thread::set_name_func = p_set_name_func;
+	Thread::set_priority_func = p_set_priority_func;
+	Thread::init_func = p_init_func;
+	Thread::term_func = p_term_func;
+}
+
+void Thread::callback(Thread *p_self, const Settings &p_settings, Callback p_callback, void *p_userdata) {
+	caller_id = _thread_id_hash(p_self->thread.get_id());
+	caller_id_cached = true;
+
+	if (set_priority_func) {
+		set_priority_func(p_settings.priority);
+	}
+	if (init_func) {
+		init_func();
+	}
+
+	p_callback(p_userdata);
+
+	if (term_func) {
+		term_func();
+	}
+}
+
+void Thread::start(Thread::Callback p_callback, void *p_user, const Settings &p_settings) {
+	if (id != _thread_id_hash(std::thread::id())) {
+#ifdef DEBUG_ENABLED
+		WARN_PRINT("A Thread object has been re-started without wait_to_finish() having been called on it. Please do so to ensure correct cleanup of the thread.");
+#endif
+		thread.detach();
+		std::thread empty_thread;
+		thread.swap(empty_thread);
+	}
+	std::thread new_thread(&Thread::callback, this, p_settings, p_callback, p_user);
+	thread.swap(new_thread);
+	id = _thread_id_hash(thread.get_id());
+}
+
+bool Thread::is_started() const {
+	return id != _thread_id_hash(std::thread::id());
+}
+
+void Thread::wait_to_finish() {
+	if (id != _thread_id_hash(std::thread::id())) {
+		ERR_FAIL_COND_MSG(id == get_caller_id(), "A Thread can't wait for itself to finish.");
+		thread.join();
+		std::thread empty_thread;
+		thread.swap(empty_thread);
+		id = _thread_id_hash(std::thread::id());
+	}
+}
+
+Error Thread::set_name(const String &p_name) {
+	if (set_name_func) {
+		return set_name_func(p_name);
+	}
+
+	return ERR_UNAVAILABLE;
+}
+
+Thread::~Thread() {
+	if (id != _thread_id_hash(std::thread::id())) {
+#ifdef DEBUG_ENABLED
+		LOG_WARN("A Thread object has been destroyed without wait_to_finish() having been called on it. Please do so to ensure correct cleanup of the thread.");
+#endif
+		thread.detach();
+	}
+}
+
+Thread::ID Thread::get_caller_id() {
+	if (likely(caller_id_cached)) {
+		return caller_id;
+	} else {
+		caller_id = _thread_id_hash(std::this_thread::get_id());
+		caller_id_cached = true;
+		return caller_id;
+	}
+}
+#endif
diff --git a/sfwl/core/thread.h b/sfwl/core/thread.h
new file mode 100644
index 0000000..a8b3276
--- /dev/null
+++ b/sfwl/core/thread.h
@@ -0,0 +1,95 @@
+#ifndef THREAD_H
+#define THREAD_H
+
+/*************************************************************************/
+/*  thread.h                                                             */
+/*  From https://github.com/Relintai/pandemonium_engine (MIT)            */
+/*************************************************************************/
+
+#include "core/typedefs.h"
+
+#if !defined(NO_THREADS)
+#include "core/safe_refcount.h"
+#include <thread>
+#endif
+
+class String;
+
+class Thread {
+public:
+	typedef void (*Callback)(void *p_userdata);
+
+	typedef uint64_t ID;
+
+	enum Priority {
+		PRIORITY_LOW,
+		PRIORITY_NORMAL,
+		PRIORITY_HIGH
+	};
+
+	struct Settings {
+		Priority priority;
+		Settings() { priority = PRIORITY_NORMAL; }
+	};
+
+private:
+#if !defined(NO_THREADS)
+	friend class Main;
+
+	static ID main_thread_id;
+
+	static uint64_t _thread_id_hash(const std::thread::id &p_t);
+
+	ID id = _thread_id_hash(std::thread::id());
+	std::thread thread;
+
+	static void callback(Thread *p_self, const Settings &p_settings, Thread::Callback p_callback, void *p_userdata);
+
+	static Error (*set_name_func)(const String &);
+	static void (*set_priority_func)(Thread::Priority);
+	static void (*init_func)();
+	static void (*term_func)();
+#endif
+
+public:
+	static void _set_platform_funcs(
+			Error (*p_set_name_func)(const String &),
+			void (*p_set_priority_func)(Thread::Priority),
+			void (*p_init_func)() = nullptr,
+			void (*p_term_func)() = nullptr);
+
+#if !defined(NO_THREADS)
+	_FORCE_INLINE_ ID get_id() const { return id; }
+	// get the ID of the caller thread
+	static ID get_caller_id();
+	// get the ID of the main thread
+	_FORCE_INLINE_ static ID get_main_id() { return main_thread_id; }
+
+	_FORCE_INLINE_ static bool is_main_thread() { return get_caller_id() == main_thread_id; }
+
+	static Error set_name(const String &p_name);
+
+	void start(Thread::Callback p_callback, void *p_user, const Settings &p_settings = Settings());
+	bool is_started() const;
+	///< waits until thread is finished, and deallocates it.
+	void wait_to_finish();
+
+	~Thread();
+#else
+	_FORCE_INLINE_ ID get_id() const { return 0; }
+	// get the ID of the caller thread
+	_FORCE_INLINE_ static ID get_caller_id() { return 0; }
+	// get the ID of the main thread
+	_FORCE_INLINE_ static ID get_main_id() { return 0; }
+
+	_FORCE_INLINE_ static bool is_main_thread() { return true; }
+
+	static Error set_name(const String &p_name) { return ERR_UNAVAILABLE; }
+
+	void start(Thread::Callback p_callback, void *p_user, const Settings &p_settings = Settings()) {}
+	bool is_started() const { return false; }
+	void wait_to_finish() {}
+#endif
+};
+
+#endif // THREAD_H
diff --git a/tools/merger/sfw_core.h.inl b/tools/merger/sfw_core.h.inl
index 08b9292..8ea899b 100644
--- a/tools/merger/sfw_core.h.inl
+++ b/tools/merger/sfw_core.h.inl
@@ -45,6 +45,14 @@
 //#include "core/typedefs.h"
 //--STRIP
 {{FILE:sfw/core/safe_refcount.h}}
+//--STRIP
+//#include "core/typedefs.h"
+//#if !defined(NO_THREADS)
+//#include "core/safe_refcount.h"
+//#include <thread>
+//#endif
+//--STRIP
+{{FILE:sfw/core/thread.h}}
 
 //--STRIP
 //#include "core/logger.h"
diff --git a/tools/merger/sfw_full.h.inl b/tools/merger/sfw_full.h.inl
index 3acd0c1..fe185b4 100644
--- a/tools/merger/sfw_full.h.inl
+++ b/tools/merger/sfw_full.h.inl
@@ -45,6 +45,14 @@
 //#include "core/typedefs.h"
 //--STRIP
 {{FILE:sfw/core/safe_refcount.h}}
+//--STRIP
+//#include "core/typedefs.h"
+//#if !defined(NO_THREADS)
+//#include "core/safe_refcount.h"
+//#include <thread>
+//#endif
+//--STRIP
+{{FILE:sfw/core/thread.h}}
 
 //--STRIP
 //#include "core/logger.h"
diff --git a/tools/merger/sfwl/sfwl_core.h.inl b/tools/merger/sfwl/sfwl_core.h.inl
index 1d85756..1444aaa 100644
--- a/tools/merger/sfwl/sfwl_core.h.inl
+++ b/tools/merger/sfwl/sfwl_core.h.inl
@@ -45,6 +45,14 @@
 //#include "core/typedefs.h"
 //--STRIP
 {{FILE:sfwl/core/safe_refcount.h}}
+//--STRIP
+//#include "core/typedefs.h"
+//#if !defined(NO_THREADS)
+//#include "core/safe_refcount.h"
+//#include <thread>
+//#endif
+//--STRIP
+{{FILE:sfwl/core/thread.h}}
 
 //--STRIP
 //#include "core/logger.h"
diff --git a/tools/merger/sfwl/sfwl_full.h.inl b/tools/merger/sfwl/sfwl_full.h.inl
index 6b874af..a51ed14 100644
--- a/tools/merger/sfwl/sfwl_full.h.inl
+++ b/tools/merger/sfwl/sfwl_full.h.inl
@@ -45,6 +45,14 @@
 //#include "core/typedefs.h"
 //--STRIP
 {{FILE:sfwl/core/safe_refcount.h}}
+//--STRIP
+//#include "core/typedefs.h"
+//#if !defined(NO_THREADS)
+//#include "core/safe_refcount.h"
+//#include <thread>
+//#endif
+//--STRIP
+{{FILE:sfwl/core/thread.h}}
 
 //--STRIP
 //#include "core/logger.h"