diff --git a/aster_core/CMakeLists.txt b/aster_core/CMakeLists.txt
index c0dddb0..26aaaa6 100644
--- a/aster_core/CMakeLists.txt
+++ b/aster_core/CMakeLists.txt
@@ -3,11 +3,13 @@
 cmake_minimum_required( VERSION 3.13 )
 
 find_package( glm CONFIG REQUIRED )
+find_path( SCOTTT_DEBUGBREAK_INCLUDE_DIRS "debugbreak.h" )
 
-set( HEADER_FILES "constants.h" "config.h" )
-# set( SOURCE_FILES )
+set( HEADER_FILES "constants.h" "config.h" "logger.h" )
+set( SOURCE_FILES "logger.cpp" )
 
 add_library( aster_core "aster.cpp" ${SOURCE_FILES} ${HEADER_FILES} )
 set_property( TARGET aster_core PROPERTY CXX_STANDARD 20 )
 
 target_link_libraries( aster_core PRIVATE glm::glm-header-only )
+target_include_directories( aster_core PRIVATE ${SCOTTT_DEBUGBREAK_INCLUDE_DIRS})
diff --git a/aster_core/constants.h b/aster_core/constants.h
index 0ae6649..9103cda 100644
--- a/aster_core/constants.h
+++ b/aster_core/constants.h
@@ -60,14 +60,22 @@ constexpr auto recast(from_t&& _in) {
 	return reinterpret_cast<type_t>(forward<from_t>(_in));
 }
 
-constexpr f32 operator ""_deg(f128 degrees) {
+constexpr f32 operator ""_deg(long double degrees) {
 	return glm::radians<f32>(cast<f32>(degrees));
 }
 
-constexpr f32 operator ""_deg(u64 degrees) {
+constexpr f32 operator ""_deg(unsigned long long int degrees) {
 	return glm::radians<f32>(cast<f32>(degrees));
 }
 
+constexpr f32 operator ""_rad(long double rads) {
+  return cast<f32>(rads);
+}
+
+constexpr f32 operator ""_rad(unsigned long long int rads) {
+  return cast<f32>(rads);
+}
+
 using glm::ivec2;
 using glm::ivec3;
 using glm::ivec4;
diff --git a/aster_core/logger.cpp b/aster_core/logger.cpp
new file mode 100644
index 0000000..271bb51
--- /dev/null
+++ b/aster_core/logger.cpp
@@ -0,0 +1,17 @@
+// =============================================
+//  Aster: logger.cc
+//  Copyright (c) 2020-2021 Anish Bhobe
+// =============================================
+
+#include "logger.h"
+
+Logger g_logger = Logger();
+
+/* Credits to Const-me */
+//namespace eastl {
+//	void __cdecl AssertionFailure(const char* af)
+//	{
+//		ERROR(af);
+//		__debugbreak();
+//	}
+//}
diff --git a/aster_core/logger.h b/aster_core/logger.h
new file mode 100644
index 0000000..94cc579
--- /dev/null
+++ b/aster_core/logger.h
@@ -0,0 +1,122 @@
+// =============================================
+//  Aster: logger.h
+//  Copyright (c) 2020-2021 Anish Bhobe
+// =============================================
+
+#pragma once
+
+#include "constants.h"
+#include <string>
+#include <debugbreak.h>
+
+struct Logger {
+	enum class LogType : u32 {
+		eError,
+		eWarning,
+		eInfo,
+		eDebug,
+		eVerbose,
+	};
+
+	u32 minimum_logging_level{ cast<u32>(LogType::eDebug) };
+
+	void set_minimum_logging_level(LogType _log_type) {
+		minimum_logging_level = cast<u32>(_log_type);
+	}
+
+	template <LogType LogLevel>
+	constexpr static const char* to_cstr() {
+		if constexpr (LogLevel == LogType::eError) return "[ERROR]:";
+		if constexpr (LogLevel == LogType::eWarning) return "[WARN]: ";
+		if constexpr (LogLevel == LogType::eInfo) return "[INFO]: ";
+		if constexpr (LogLevel == LogType::eDebug) return "[DEBUG]:";
+		if constexpr (LogLevel == LogType::eVerbose) return "[VERB]: ";
+	}
+
+	template <LogType LogLevel>
+	constexpr static const char* to_color_cstr() {
+		if constexpr (LogLevel == LogType::eError) return ANSI_Red;
+		if constexpr (LogLevel == LogType::eWarning) return ANSI_Yellow;
+		if constexpr (LogLevel == LogType::eInfo) return ANSI_Green;
+		if constexpr (LogLevel == LogType::eDebug) return ANSI_White;
+		if constexpr (LogLevel == LogType::eVerbose) return ANSI_Blue;
+	}
+
+	template <LogType LogLevel>
+	void log(const std::string_view& _message, const char* _loc, u32 _line) const {
+		if (cast<u32>(LogLevel) <= minimum_logging_level) {
+			printf("%s%s %s%s| at %s:%u%s\n", to_color_cstr<LogLevel>(), to_cstr<LogLevel>(), _message.data(), ANSI_Black, _loc, _line, ANSI_Reset);
+		}
+#if !defined(NDEBUG)
+		if constexpr (LogLevel == LogType::eError) {
+			debug_break();
+		}
+#endif // !defined(NDEBUG)
+	}
+
+	template <LogType LogLevel>
+	void log_cond(const char* _expr_str, const std::string_view& _message, const char* _loc, u32 _line) const {
+		if (cast<u32>(LogLevel) <= minimum_logging_level) {
+			printf("%s%s (%s) %s%s| at %s:%u%s\n", to_color_cstr<LogLevel>(), to_cstr<LogLevel>(), _expr_str, _message.data(), ANSI_Black, _loc, _line, ANSI_Reset);
+		}
+#if !defined(NDEBUG)
+		if constexpr (LogLevel == LogType::eError) {
+			debug_break();
+		}
+#endif // !defined(NDEBUG)
+	}
+};
+
+extern Logger g_logger;
+
+#define ERROR(msg) g_logger.log<Logger::LogType::eError>(msg, __FILE__, __LINE__)
+#define WARN(msg) g_logger.log<Logger::LogType::eWarning>(msg, __FILE__, __LINE__)
+#define INFO(msg) g_logger.log<Logger::LogType::eInfo>(msg, __FILE__, __LINE__)
+
+#define ERROR_IF(expr, msg) if (cast<bool>(expr)) [[unlikely]] g_logger.log_cond<Logger::LogType::eError>(#expr, msg, __FILE__, __LINE__)
+#define WARN_IF(expr, msg) if (cast<bool>(expr)) [[unlikely]] g_logger.log_cond<Logger::LogType::eWarning>(#expr, msg, __FILE__, __LINE__)
+#define	INFO_IF(expr, msg) if (cast<bool>(expr)) g_logger.log_cond<Logger::LogType::eInfo>(#expr, msg, __FILE__, __LINE__)
+
+#define ELSE_IF_ERROR(expr, msg) ;else if (cast<bool>(expr)) [[unlikely]] g_logger.log_cond<Logger::LogType::eError>(#expr, msg, __FILE__, __LINE__)
+#define ELSE_IF_WARN(expr, msg) ;else if (cast<bool>(expr)) [[unlikely]] g_logger.log_cond<Logger::LogType::eWarning>(#expr, msg, __FILE__, __LINE__)
+#define	ELSE_IF_INFO(expr, msg) ;else if (cast<bool>(expr)) g_logger.log_cond<Logger::LogType::eInfo>(#expr, msg, __FILE__, __LINE__)
+
+#define ELSE_ERROR(msg) ;else [[unlikely]] g_logger.log<Logger::LogType::eError>(msg, __FILE__, __LINE__)
+#define ELSE_WARN(msg) ;else [[unlikely]] g_logger.log<Logger::LogType::eWarning>(msg, __FILE__, __LINE__)
+#define ELSE_INFO(msg) ;else g_logger.log<Logger::LogType::eInfo>(msg, __FILE__, __LINE__)
+
+#if !defined(DEBUG_LOG_DISABLED) && !defined(NDEBUG)
+
+#define DEBUG(msg) g_logger.log<Logger::LogType::eDebug>(msg, __FILE__, __LINE__)
+#define DEBUG_IF(expr, msg) if (cast<bool>(expr)) g_logger.log_cond<Logger::LogType::eDebug>(#expr, msg, __FILE__, __LINE__)
+#define ELSE_IF_DEBUG(expr, msg) ;else if (cast<bool>(expr)) g_logger.log_cond<Logger::LogType::eDebug>(#expr, msg, __FILE__, __LINE__)
+#define ELSE_DEBUG(msg) ;else [[unlikely]] g_logger.log<Logger::LogType::eDebug>(msg, __FILE__, __LINE__)
+
+#else // !defined(DEBUG_LOG_DISABLED)
+
+#define DEBUG(msg) {}
+#define DEBUG_IF(expr, msg) if (expr) (void)msg
+#define ELSE_IF_DEBUG(expr, msg) ;if (expr) (void)msg
+#define ELSE_DEBUG(msg) ;{}
+
+#endif // !defined(DEBUG_LOG_DISABLED)
+
+#if !defined(VERBOSE_LOG_DISABLED) && !defined(NDEBUG)
+
+#define VERBOSE(msg) g_logger.log<Logger::LogType::eVerbose>(msg, __FILE__, __LINE__)
+#define VERBOSE_IF(expr, msg) if (cast<bool>(expr)) g_logger.log_cond<Logger::LogType::eVerbose>(#expr, msg, __FILE__, __LINE__)
+#define ELSE_IF_VERBOSE(expr, msg) ;else if (cast<bool>(expr)) g_logger.log_cond<Logger::LogType::eVerbose>(#expr, msg, __FILE__, __LINE__)
+#define ELSE_VERBOSE(msg) ;else g_logger.log<Logger::LogType::eVerbose>(msg, __FILE__, __LINE__)
+
+#else // !defined(DEBUG_LOG_DISABLED)
+
+#define VERBOSE(msg) {}
+#define VERBOSE_IF(expr, msg) if (expr) (void)msg
+#define ELSE_IF_VERBOSE(expr, msg) ;if (expr) (void)msg
+#define ELSE_VERBOSE(msg) ;{}
+
+#endif // !defined(VERBOSE_LOG_DISABLED)
+
+#define DO(code) , code
+#define CRASH(code) exit(cast<i32>(code))
+#define THEN_CRASH(code) ,CRASH(code)
diff --git a/vcpkg.json b/vcpkg.json
index 325ad9a..3dad767 100644
--- a/vcpkg.json
+++ b/vcpkg.json
@@ -1,6 +1,7 @@
 {
   "dependencies": [
+    "glfw3",
     "glm",
-    "glfw3"
+    "scottt-debugbreak"
   ]
 }