fix: missing display env var

fix: #41

.drone.yml

@@ -1,55 +1,140 @@
+---
+kind: pipeline
+type: exec
+name: amd64 — msvc
+trigger:
+  branch:
+  - main
+platform:
+  os: windows
+  arch: amd64
+
+steps:
+- name: unit tests
+  shell: powershell
+  commands: 
+    - ./tools/ci/amd64/msvc/unit_tests.ps1
+
+---
 kind: pipeline
 type: docker
-name: clang format
-clone:
-  recursive: true
-  submodule_update_remote: true
-
+name: amd64 — gcc
 trigger:
   branch:
   - main
 
 steps:
+- name: unit tests
+  image: amd64_gcc_unit_tests:latest
+  pull: if-not-exists
+  commands:
+    - ./tools/ci/amd64/gcc/unit_tests.sh
+
+- name: valgrind
+  image: amd64_gcc_valgrind:latest
+  pull: if-not-exists
+  commands:
+    - ./tools/ci/amd64/gcc/valgrind.sh
+
+---
+kind: pipeline
+type: docker
+name: amd64 — clang
+trigger:
+  branch:
+  - main
+
+steps:
+- name: code coverage
+  image: amd64_clang_coverage:latest
+  pull: if-not-exists
+  environment:
+    CODECOV_TOKEN:
+      from_secret: CODECOV_TOKEN 
+  commands:
+    - ./tools/ci/amd64/clang/coverage.sh
+
+- name: leak sanitizer
+  image: amd64_clang_lsan:latest
+  pull: if-not-exists
+  commands:
+    - ./tools/ci/amd64/clang/lsan.sh
+
+- name: memory sanitizer
+  image: amd64_clang_msan:latest
+  pull: if-not-exists
+  commands:
+    - ./tools/ci/amd64/clang/msan.sh
+
+---
+kind: pipeline
+type: docker
+name: static analysis
+trigger:
+  branch:
+  - main
+
+steps:
+- name: clang tidy
+  image: clang_tidy:latest
+  pull: if-not-exists
+  privileged: true
+  commands:
+    - ./tools/ci/static_analysis/clang_tidy.sh
+
 - name: clang format
   image: clang_format:latest
   pull: if-not-exists
   commands:
-    - |
-      set -e
-      clang-format --version
-      has_fomatting_issues=0
+    - ./tools/ci/static_analysis/clang_format.sh
 
-      for file in $(find ./modules -name '*.?pp'); do
-        echo "Checking format for $file"
-        if ! clang-format --dry-run --Werror "$file"; then
-          echo "❌ Formatting issue detected in $file"
-          has_fomatting_issues=1
-        fi
-      done
-
-      if [ "$has_fomatting_issues" -eq 0 ]; then
-        echo "✅ All files are properly formatted! Well done! ^~^"
-      fi
-
-      exit ${has_fomatting_issues}
 ---
-
 kind: pipeline
 type: docker 
-name: static analysis
-clone:
-  recursive: true
-  submodule_update_remote: true
-
+name: documentation — development
+node:
+  environment: ryali
 trigger:
   branch:
   - main
 
 steps:
-- name: static_analysis
-  image: static_analysis:latest
+- name: build and deploy
+  image: documentation:latest
   pull: if-not-exists
-  privileged: true
   commands:
-    - git submodule update --init --recursive
-    - conan build . -s build_type=Release -o enable_static_analysis=True --build=missing
+    - pwd
+    - cd docs
+    - mkdir generated
+    - touch generated/changelogs.rst
+    - touch generated/api.rst
+    - sphinx-build -M html . .
+
+    - rm -rf /light_docs_dev/*
+    - mv ./html/* /light_docs_dev/
+
+---
+
+kind: pipeline
+type: docker
+name: documentation — production
+node:
+  environment: ryali
+trigger:
+  event:
+  - tag
+
+steps:
+- name: build and deploy
+  image: documentation:latest
+  pull: if-not-exists
+  commands:
+    - pwd
+    - cd docs
+    - mkdir generated
+    - touch generated/changelogs.rst
+    - touch generated/api.rst
+    - sphinx-build -M html . .
+
+    - rm -rf /light_docs/*
+    - mv ./html/* /light_docs/

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,36 +0,0 @@
----
-name: Bug report
-about: Create a report to help us improve
-title: "[BUG]: "
-labels: ''
-assignees: Light3039
-
----
-
-**Describe the bug**
-A clear and concise description of what the bug is.
-
-**Expected behavior**
-A clear and concise description of what you expected to happen.
-
-**To Reproduce**
-Steps to reproduce the behavior:
-1. Make projects "..."
-2. Build projects "..."
-3. Run project (Mirror/Sandbox) "..."
-4. Do "..."
-5. See bug "..."
-
-**System (you can omit any of the fields except OS and Console's debug output):**
- - OS: [e.g. Manjaro Linux v21.1.0]
-- GPU: [e.g. NVIDIA GeForce GTX 1050 Ti Mobile]
-- CPU: [e.g. Intel i7-7700HQ (8) @ 3.800GHz]
-
- - Console's debug output (omit if bug occurs before running the program):
-
-**Screenshots**
-If applicable, add screenshots to help explain your problem.
-If possible add screen shot of console's debug output and neofetch.
-
-**Additional context**
-Add any other context about the problem here.

.gitmodules

@@ -1,4 +0,0 @@
-[submodule "external/imgui"]
-	path = external/imgui
-	url = https://github.com/ocornut/imgui
-	branch = docking

CMakeLists.txt

@@ -1,30 +1,43 @@
 cmake_minimum_required(VERSION 3.14)
 project(Light)
 set(CMAKE_CXX_STANDARD 23)
+set(CMAKE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/tools/cmake)
 
-include(${CMAKE_CURRENT_SOURCE_DIR}/tools/cmake/macros.cmake)
+include(CheckCXXSourceCompiles)
+include(${CMAKE_DIR}/functions.cmake)
+include(${CMAKE_DIR}/definitions.cmake)
+include(${CMAKE_DIR}/dependencies.cmake)
 
-add_option(ENABLE_STATIC_ANALYSIS "Enables clang-tidy static analysis")
+add_option(ENABLE_UNIT_TESTS "Enables the building of the unit test modules")
+add_option(ENABLE_FUZZ_TESTS "Enables the building of the fuzz test modules")
 
+add_option(ENABLE_STATIC_ANALYSIS "Makes clang-tidy checks mandatory for compilation")
 if (ENABLE_STATIC_ANALYSIS)
     set(CMAKE_CXX_CLANG_TIDY "clang-tidy;--warnings-as-errors=*;--allow-no-checks")
 endif ()
 
-if(WIN32)
-  add_compile_definitions(LIGHT_PLATFORM_WINDOWS)
-elseif(UNIX)
-  add_compile_definitions(LIGHT_PLATFORM_LINUX)
-endif()
+add_option(ENABLE_LLVM_COVERAGE "Enables the code coverage instrumentation for clang")
+if(ENABLE_LLVM_COVERAGE)
+    if (NOT "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
+        message(FATAL_ERROR "ENABLE_LLVM_COVERAGE only supports the clang compiler")
+    endif ()
 
-find_package(glfw3 REQUIRED)
-find_package(glm REQUIRED)
-find_package(spdlog REQUIRED)
-find_package(stb REQUIRED)
-find_package(yaml-cpp REQUIRED)
-find_package(EnTT REQUIRED)
-find_package(opengl_system REQUIRED)
-find_package(nlohmann_json REQUIRED)
-find_package(lz4 REQUIRED)
+    # Check for libc++
+    check_cxx_source_compiles("
+        #include <string>
+        #ifdef _LIBCPP_VERSION
+        int main() { return 0; }
+        #else
+        #error Not using libc++
+        #endif
+    " USING_LIBCXX)
+    if(NOT USING_LIBCXX)
+        message(FATAL_ERROR "ENABLE_LLVM_COVERAGE requires libc++, please compile with -stdlib=libc++")
+    endif()
 
-add_subdirectory(./modules)
-add_subdirectory(./external)
+    add_compile_options(-fprofile-instr-generate -fcoverage-mapping)
+    add_link_options(-fprofile-instr-generate -fcoverage-mapping)
+endif ()
+
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/modules)
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/external/glad)

README.md

@@ -1,2 +1,6 @@
 # Light
 See docs.light7734.com for a comprehensive project documentation
+
+<!---FUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUCK
+MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!!!!!!!!-->

conanfile.py

@@ -11,26 +11,29 @@ class LightRecipe(ConanFile):
     generators = "CMakeDeps"
 
     options = {
+        "enable_unit_tests": [True, False],
+        "enable_fuzz_tests": [True, False],
+        "enable_llvm_coverage": [True, False],
         "enable_static_analysis": [True, False],
+        "use_mold": [True, False],
         "export_compile_commands": [True, False],
     }
 
     default_options = {
-        "export_compile_commands": True,
+        "enable_unit_tests": True,
+        "enable_fuzz_tests": False,
+        "enable_llvm_coverage": False,
         "enable_static_analysis": False,
+        "use_mold": False,
+        "export_compile_commands": True,
     }
 
     def requirements(self):
-        self.requires("gtest/1.16.0")
+        self.requires("imgui/1.92.0-docking")
         self.requires("entt/3.15.0")
         self.requires("glfw/3.4")
-        self.requires("glm/1.0.1")
-        self.requires("spdlog/1.15.3")
-        self.requires("spirv-cross/1.4.313.0")
         self.requires("stb/cci.20240531")
-        self.requires("volk/1.3.296.0")
         self.requires("yaml-cpp/0.8.0")
-        self.requires("nlohmann_json/3.12.0")
         self.requires("lz4/1.10.0")
 
     def layout(self):
@@ -41,7 +44,13 @@ class LightRecipe(ConanFile):
 
         tc.variables["CMAKE_BUILD_TYPE"] = self.settings.build_type
 
+        if self.options.use_mold:
+            tc.cache_variables["CMAKE_LINKER_TYPE"] = "MOLD"
+
         tc.cache_variables["CMAKE_EXPORT_COMPILE_COMMANDS"] = self.options.export_compile_commands
+        tc.cache_variables["ENABLE_UNIT_TESTS"] = self.options.enable_unit_tests
+        tc.cache_variables["ENABLE_FUZZ_TESTS"] = self.options.enable_fuzz_tests
+        tc.cache_variables["ENABLE_LLVM_COVERAGE"] = self.options.enable_llvm_coverage
         tc.cache_variables["ENABLE_STATIC_ANALYSIS"] = self.options.enable_static_analysis
 
         repo = git.Repo(search_parent_directories=True)

docs/.gitignore

@@ -0,0 +1,3 @@
+_build/
+generated/
+

docs/architecture/assets.rst

@@ -1,62 +1,72 @@
 Asset Management
 ===================================================================================================
-Layout
+
+On Disk (file) Layout
 ---------------------------------------------------------------------------------------------------
-{version}              | 4 bytes, ie. uint32_t
-{general metadata}     | sizeof(AssetMetadata)
-{specialized metadata} | sizeof(XXXAssetMetadata), eg. TextureAssetMetadata
-{n}                    | 4 bytes, ie. uint32_t
-{blob_0...n metadata}  | n * sizeof(BlobMetadata)
-{blob_0...n data}      | variable size based on actual data
-{end marker}           | 8 byte, ie size_t for marking the END
+
+.. code-block:: md
+
+    {version}              | 4 bytes, ie. uint32_t
+    {general metadata}     | sizeof(AssetMetadata)
+    {specialized metadata} | sizeof(XXXAssetMetadata), eg. TextureAssetMetadata
+    {n}                    | 4 bytes, ie. uint32_t
+    {blob_0...n metadata}  | n * sizeof(BlobMetadata)
+    {blob_0...n data}      | variable size based on actual data
+    {end marker}           | 8 byte, ie size_t for marking the END
 
 Sections
 ---------------------------------------------------------------------------------------------------
-version              -> The version of the asset for forward compatibility
-general metadata     -> Common asset metadata such as file-path, asset-type, creator, etc.
-specialized metadata -> Metadata specific to the asset, eg. texture dimensions for Textures.
-n                    -> The number of blobs.
-blob_0...n metadata  -> Metadata specifying how the actual data is packed, required for unpacking.
-blob_0...n data      -> The actual data, packed and compressed to be reacdy for direct engine consumption.
+
+.. code-block:: md
+
+    version              -> The version of the asset for forward compatibility
+    general metadata     -> Common asset metadata such as file-path, asset-type, creator, etc.
+    specialized metadata -> Metadata specific to the asset, eg. texture dimensions for Textures.
+    n                    -> The number of blobs.
+    blob_0...n metadata  -> Metadata specifying how the actual data is packed, required for unpacking.
+    blob_0...n data      -> The actual data, packed and compressed to be reacdy for direct engine consumption.
 
 Loading
 ---------------------------------------------------------------------------------------------------
-Each `Loader` has ONE OR MORE supported input file types (detected via the file extension): eg. StbLoader -> Can read in .jpg, .png, .bmp, etc.... files
+Loading pre-baked asset files (like .png files) for baking:
 
-Each `Loader` has ONLY ONE supported output asset type:
+
+Each **Loader** has ONE OR MORE supported input file types (detected via the file extension): eg. StbLoader -> Can read in .jpg, .png, .bmp, etc.... files
+
+Each **Loader** has ONLY ONE supported output asset type:
 eg. StbLoader -> outputs TextureAsset
 
-Multiple `Loader`s MAY have as output the same asset type:
+Multiple **Loader**\s MAY have as output the same asset type:
 eg. StbLoader -> outputs TextureAsset
 eg. SomeOtherImgLoader -> outputs TextureAsset
 
-Multiple `Loader`s SHOULD NOT have as input same extension types
-eg. .jpg, .png -> if supported, should only be supported by 1 `Loader` class
+Multiple **Loader**\s SHOULD NOT have as input same extension types
+eg. .jpg, .png -> if supported, should only be supported by 1 **Loader** class
 
-Each `Loader` SHOULD read and turn the data from a file (eg. .png for textures) into something
-understandable by a `Packer` (not the engine itself).
+Each **Loader** SHOULD read and turn the data from a file (eg. .png for textures) into something
+understandable by a **Packer** (not the engine itself).
 
-A `Loader` SHOULD NOT be responsible for packing the parsed file data into asset data,
+A **Loader** SHOULD NOT be responsible for packing the parsed file data into asset data,
 as that implies direct understanding of the layout required by the engine. 
 
-And if that layout changes, ALL `Loader`s should change accordingly; 
+And if that layout changes, ALL **Loader**s should change accordingly; 
 which makes a class that's responsible for reading files dependant on the engine's (potentially frequent) internal changes.
-The logic is to reduce many-to-one dependency into a one-to-one dependency by redirecting the packing process to `Packer` classes
+The logic is to reduce many-to-one dependency into a one-to-one dependency by redirecting the packing process to **Packer** classes
 
 Packing
 ---------------------------------------------------------------------------------------------------
-Each `Packer` is responsible for packing ONLY ONE asset type:
+Each **Packer** is responsible for packing ONLY ONE asset type:
 eg. TexturePacker for packing texture assets from parsed image files.
 eg. ModelPacker for packing model assets from parsed model files.
 
-Each `Packer` will output ONE OR MORE blobs of data, 
+Each **Packer** will output ONE OR MORE blobs of data, 
 and for EACH blob of data, it'll write a BlobMetadata, AFTER the specialized metadata (eg. TextureAssetMetadata)
 
-A `Packer` will make use of the `Compressor` classes to compress the data,
+A **Packer** will make use of the **Compressor** classes to compress the data,
 and lay it out in a way that is suitable for the engine's consumption.
 
 Unpacking
 ---------------------------------------------------------------------------------------------------
-A `Parser` is responsible for parsing ONLY ONE asset type:
+A **Parser** is responsible for parsing ONLY ONE asset type:
 eg. TextureParser for parsing texture assets for direct engine consumption.
 eg. ModelParser  for parsing model assets for direct engine consumption.

docs/architecture/resource.rst

@@ -1,4 +1,5 @@
-Resource Management
+.. architecture/resources
 
+Resource Management
 ===================================================================================================
 

docs/conf.py

@@ -0,0 +1,27 @@
+# Configuration file for the Sphinx documentation builder.
+#
+# For the full list of built-in configuration values, see the documentation:
+# https://www.sphinx-doc.org/en/master/usage/configuration.html
+
+# -- Project information -----------------------------------------------------
+# https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information
+
+project = 'light'
+copyright = '2025, light7734'
+author = 'light7734'
+
+# -- General configuration ---------------------------------------------------
+# https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration
+
+extensions = []
+
+templates_path = ['_templates']
+exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
+
+
+
+# -- Options for HTML output -------------------------------------------------
+# https://www.sphinx-doc.org/en/master/usage/configuration.html#options-for-html-output
+
+html_theme = 'sphinx_rtd_theme'
+html_static_path = ['_static']

docs/generate_changelog.py

@@ -0,0 +1,68 @@
+from git import Repo
+import re
+
+repo = Repo(search_parent_directories=True)
+assert not repo.bare
+
+file_path = "generated/changelog.rst"
+
+messages = []
+short_shas = []
+hex_shas = []
+logs = []
+
+remote_url = "https://git.light7734.com/light7734/light/commit"
+def format_log(commit_type, message, major, minor, patch, short_sha, hex_sha):
+    href = f"{remote_url}/{hex_sha}"
+    version = f"{major}.{minor}.{patch}-kitten+{short_sha}";
+    link = f"`{version} <{remote_url}/{hex_sha}>`__"
+    return f"| **{message}** ({link})"
+
+for commit in repo.iter_commits():
+    messages.append(commit.summary)
+    short_shas.append(repo.git.rev_parse(commit.hexsha, short=5))
+    hex_shas.append(commit.hexsha)
+
+ver_major = 0
+ver_minor = 0
+ver_patch = 0
+
+idx = len(messages)
+for message in reversed(messages):
+    idx = idx - 1;
+
+    commit_type = re.match("^(feat|fix|refactor|perf|build|asset|test|chore|ci|docs)", message)
+    if not commit_type:
+        continue
+
+    match commit_type.group(0):
+        case "feat":
+            ver_minor = ver_minor + 1
+            ver_patch = 0
+
+        case "fix":
+            ver_patch = ver_patch + 1
+
+        case "refactor":
+            ver_patch = ver_patch + 1
+
+        case "perf":
+            ver_patch = ver_patch + 1
+
+        case "build":
+            ver_patch = ver_patch + 1
+
+        case "asset":
+            ver_patch = ver_patch + 1
+
+    logs.append(format_log(commit_type, message, ver_major, ver_minor, ver_patch, short_shas[idx], hex_shas[idx]))
+
+with open(file_path, "w") as f:
+    f.write(".. changelogs\n\n\n")
+    f.write("Changelogs\n")
+    f.write("==================================================\n\n")
+
+    f.write("KITTEN\n")
+    f.write("--------------------------------------------------\n\n")
+    for log in reversed(logs):
+          f.write(log + '\n')

docs/guidelines/conventions.rst

@@ -0,0 +1,10 @@
+.. guidelines/conventions
+
+Coding Conventions
+===================================================================================================
+Any line of code added to the engine, must abide by following conventions.
+They may seem arbitrary, and sometimes they are. But to achieve **consistency**, which is not an arbitrary goal, is to
+follow these guidelines.
+
+AAA
+--------------------

docs/guidelines/development.rst

@@ -0,0 +1,147 @@
+.. guidelines/development
+
+Development
+===================================================================================================
+As a solo-project, I am not only the **developer**, but also the **manager**. 
+Therefore there is a need, if this project is to succeed, to have a development plan. 
+
+Such a plan should:
+
+- Define a way to **distribute work** (across time, since there's only 1 developer).
+- Define what is a **unit of work** (cycles).
+- Provide a way to **track productivity**, which helps projecting the future and **detecting patterns** early on.
+- Provide a **pipeline** for the work to go through and **minimize ambiguity**.
+
+These are the **management** aspects of the project, which help the development goals to be more **pragmatic**
+---by pulling my mind out of its **engineering dreamland**, and make it focus on the **broader picture**.
+
+Cycle
+---------------------------------------------------------------------------------------------------
+A cycle is one **step** in development, one cycle = one ticket, and it consists of 4 stages:
+
+1 - Make it known
+    - Write the commit message.
+        - This limits the **scope of changes** and gives you a very specific **goal** to work towards.
+        - If something outside of this scope really bothers you, fix and stash for a future cycle.
+        - Make a ticket if stash-fix is implausible ---**DO NOT** write **todo** comments.
+        - The message should follow the project's **commit message specifications**.
+
+    - Make a ticket.
+        - Version control (git) is a **development-tool**, not a **management-tool**.
+        - Provide a very brief description ---This may be used in the commit message's body.
+
+2 - Make it work
+    - Write high-level tests that confirms the cycle's requirements are met.
+        - That is, specify requirements in a programming language instead of English.
+        - You're done when all the tests pass.
+        - Preferably write the tests first, but it's okay to start with the interface.
+        - Tests may not be necessary depending on the requirements and commit type.
+
+    - "Make it work" doesn't mean liberally producing shit code, you should:
+        - Follow project's **conventions**.
+        - Follow **best practices** and **proven swe principles**.
+        - Enable **warnings as errors**.
+        - Enable **static analysis**.
+        - Don't break any pre-existing-tests.
+        - Have the over-all picture in mind.
+
+3 - Make it right
+    - Test driven refactoring
+        - Now you have a better picture of how things relate and work.
+        - Switch to a TDD-style development to do the refactoring while following swe best-practices and proven-principles.
+
+4 - Make it fast
+    - This is an engine, at the end of the day, **performance** is king.
+    - Get a performance and/or memory profile and try to alleviate the bottlenecks.
+    - Avoid premature optimizations, be certain what you change has performance benefits.
+
+
+Sprint
+---------------------------------------------------------------------------------------------------
+A sprint is the collection of all the finished cycles in one week.
+It's meant to provide insight on development speed and help projecting the future.
+
+
+Commit Message Specification
+---------------------------------------------------------------------------------------------------
+The project follows the `Conventional Commits Specification <https://www.conventionalcommits.org/en/v1.0.0-beta.4>`_.
+
+.. code-block:: md
+
+    <type>[optional scope]: <description>
+
+    [optional body]
+
+    [optional footer]
+
+With the following commit types:
+
+- feat
+    - For adding a new feature.
+    - Causes a **minor** bump in version.
+
+- fix
+    - For changes that fix one or more bug.
+    - Causes a **patch** bump in version.
+
+- refactor
+    - For non feat/fix changes that improve the implementation and/or the interface.
+    - Causes a **patch** bump in version.
+
+- perf
+    - For changes that (hopefully) improve the performance.
+    - Causes a **patch** bump in version.
+
+- build
+    - For changes that affect the build system or external dependencies.
+    - Causes a **patch** bump in version.
+
+- asset
+    - For changes to the files under the ``/data`` directory.
+    - Causes a **patch** bump in version.
+
+- test
+    - For adding missing tests or correcting the existing tests.
+    - Does not affect the version.
+
+- chore
+    - For releases, .gitignore changes, deleting unused files, etc.
+    - Does not affect the version.
+
+- ci
+    - For changes to our CI configuration files and scripts, including files under ``/tools/ci``.
+    - Does not affect the version.
+
+- docs
+    - For changes to the documentations.
+    - Does not affect the version.
+
+Semantic Versioning
+---------------------------------------------------------------------------------------------------
+Coupled with conventional commit style messages, we can automajically version the project following
+the **Semantic Versioning 2.0.0** specifications.
+
+The full version identifier consits of a version core (major.minor.patch) + label + hexsha of the commit.
+Using the following format:
+
+
+.. code-block:: md
+
+    <major>.<minor>.<patch>-<label>+<short_hexsha>
+
+    eg.
+    0.8.1-kitten+ea898 
+    0.5.0-kitten+01d85
+    1.5.0-akasha+7de53
+
+    kitten refers to all pre-release (1.0.0) versions
+
+
+The shortened hexsha of a commit is obtained by:
+``git rev-parse --short=5 <commit_hexsha>``
+
+
+
+
+
+

docs/guidelines/philosophy.rst

@@ -0,0 +1,7 @@
+.. guidelines/philosophy
+
+Philosophy
+===================================================================================================
+
+| **A theory or attitude that acts as a guiding principle for behaviour.**
+| --- Oxford Languages

docs/index.rst

@@ -0,0 +1,32 @@
+.. light documentation
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Light Engine
+
+   light/showcase.rst
+   light/features.rst
+   
+.. toctree::
+   :maxdepth: 2
+   :caption: Software Architecture
+
+   architecture/assets.rst
+   architecture/resource.rst
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Development Guidelines
+
+   guidelines/philosophy.rst
+   guidelines/development.rst
+   guidelines/conventions.rst
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Generated Docs
+
+   generated/api.rst
+   generated/changelog.rst
+
+

docs/light/features.rst

@@ -0,0 +1,4 @@
+.. light/features
+
+Features
+===================================================================================================

docs/light/showcase.rst

@@ -0,0 +1,4 @@
+.. light/demos
+
+Showcase
+===================================================================================================

docs/make.bat

@@ -0,0 +1,35 @@
+@ECHO OFF
+
+pushd %~dp0
+
+REM Command file for Sphinx documentation
+
+if "%SPHINXBUILD%" == "" (
+	set SPHINXBUILD=sphinx-build
+)
+set SOURCEDIR=.
+set BUILDDIR=_build
+
+%SPHINXBUILD% >NUL 2>NUL
+if errorlevel 9009 (
+	echo.
+	echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
+	echo.installed, then set the SPHINXBUILD environment variable to point
+	echo.to the full path of the 'sphinx-build' executable. Alternatively you
+	echo.may add the Sphinx directory to PATH.
+	echo.
+	echo.If you don't have Sphinx installed, grab it from
+	echo.https://www.sphinx-doc.org/
+	exit /b 1
+)
+
+if "%1" == "" goto help
+
+%SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+goto end
+
+:help
+%SPHINXBUILD% -M help %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+
+:end
+popd

external/CMakeLists.txt

@@ -1,58 +0,0 @@
-# GLAD #
-add_subdirectory(./glad)
-
-set(MIRROR_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../modules/mirror/)
-set(DEPENDENCIES_DIR ${CMAKE_CURRENT_SOURCE_DIR}/)
-
-if (CMAKE_COMPILER_IS_GNUCC)
-    add_compile_options(-w)
-endif()
-if(MSVC)
-    add_compile_options(/MP)
-    add_compile_options(/W0)
-endif()
-
-file(GLOB IMGUI_FILES true ABSOLUTE
-    ${CMAKE_CURRENT_SOURCE_DIR}/imgui/imgui.cpp
-    ${CMAKE_CURRENT_SOURCE_DIR}/imgui/imgui_tables.cpp
-    ${CMAKE_CURRENT_SOURCE_DIR}/imgui/imgui_widgets.cpp
-    ${CMAKE_CURRENT_SOURCE_DIR}/imgui/imgui_draw.cpp
-    ${CMAKE_CURRENT_SOURCE_DIR}/imgui/imgui_demo.cpp
-)
-
-set(BACKENDS_DIR ${CMAKE_CURRENT_SOURCE_DIR}/imgui/backends/)
-
-
-file(GLOB IMGUI_BACKEND_FILES true ABSOLUTE 
-    ${BACKENDS_DIR}imgui_impl_opengl3.cpp
-    ${BACKENDS_DIR}imgui_impl_glfw.cpp
-    # ${BACKENDS_DIR}imgui_impl_vulkan.cpp ${BACKENDS_DIR}imgui_impl_vulkan.h
-)
-
-if(WIN32)
-    file(GLOB IMGUI_WINDOWS_BACKEND_FILES true ABSOLUTE ${CMAKE_CURRENT_SOURCE_DIR}/backends/
-    ${BACKENDS_DIR}imgui_impl_dx11.cpp
-    ${BACKENDS_DIR}imgui_impl_win32.cpp
-)
-
-    list(APPEND IMGUI_BACKEND_FILES ${IMGUI_WINDOWS_BACKEND_FILES})
-endif()
-
-add_compile_definitions(IMGUI_IMPL_OPENGL_LOADER_GLAD)
-include_directories(${DEPENDENCIES_DIR}GLFW/include)
-include_directories(${DEPENDENCIES_DIR}glm/)
-
-add_library(imgui STATIC ${IMGUI_FILES} ${IMGUI_BACKEND_FILES})
-
-target_include_directories(imgui PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/imgui)
-target_link_libraries(
-  imgui
-  PUBLIC glad
-  PUBLIC opengl::opengl
-  PUBLIC glm::glm 
-  PUBLIC glfw
-)
-
-# Copy imconfig.h over
-file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/configurations/imgui/imconfig.h
-    DESTINATION ${CMAKE_CURRENT_SOURCE_DIR}/imgui/)

external/configurations/imgui/imconfig.h

@@ -1,131 +0,0 @@
-//-----------------------------------------------------------------------------
-// COMPILE-TIME OPTIONS FOR DEAR IMGUI
-// Runtime options (clipboard callbacks, enabling various features, etc.) can generally be set via the ImGuiIO structure.
-// You can use ImGui::SetAllocatorFunctions() before calling ImGui::CreateContext() to rewire memory allocation functions.
-//-----------------------------------------------------------------------------
-// A) You may edit imconfig.h (and not overwrite it when updating Dear ImGui, or maintain a patch/rebased branch with your modifications to it)
-// B) or '#define IMGUI_USER_CONFIG "my_imgui_config.h"' in your project and then add directives in your own file without touching this template.
-//-----------------------------------------------------------------------------
-// You need to make sure that configuration settings are defined consistently _everywhere_ Dear ImGui is used, which include the imgui*.cpp
-// files but also _any_ of your code that uses Dear ImGui. This is because some compile-time options have an affect on data structures.
-// Defining those options in imconfig.h will ensure every compilation unit gets to see the same data structure layouts.
-// Call IMGUI_CHECKVERSION() from your .cpp files to verify that the data structures your files are using are matching the ones imgui.cpp is using.
-//-----------------------------------------------------------------------------
-
-#pragma once
-
-//---- Define assertion handler. Defaults to calling assert().
-// If your macro uses multiple statements, make sure is enclosed in a 'do { .. } while (0)' block so it can be used as a single statement.
-//#define IM_ASSERT(_EXPR)  MyAssert(_EXPR)
-//#define IM_ASSERT(_EXPR)  ((void)(_EXPR))     // Disable asserts
-
-//---- Define attributes of all API symbols declarations, e.g. for DLL under Windows
-// Using Dear ImGui via a shared library is not recommended, because of function call overhead and because we don't guarantee backward nor forward ABI compatibility.
-// DLL users: heaps and globals are not shared across DLL boundaries! You will need to call SetCurrentContext() + SetAllocatorFunctions()
-// for each static/DLL boundary you are calling from. Read "Context and Memory Allocators" section of imgui.cpp for more details.
-//#define IMGUI_API __declspec( dllexport )
-//#define IMGUI_API __declspec( dllimport )
-
-//---- Don't define obsolete functions/enums/behaviors. Consider enabling from time to time after updating to avoid using soon-to-be obsolete function/names.
-//#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-//#define IMGUI_DISABLE_OBSOLETE_KEYIO                      // 1.87: disable legacy io.KeyMap[]+io.KeysDown[] in favor io.AddKeyEvent(). This will be folded into IMGUI_DISABLE_OBSOLETE_FUNCTIONS in a few versions.
-
-//---- Disable all of Dear ImGui or don't implement standard windows.
-// It is very strongly recommended to NOT disable the demo windows during development. Please read comments in imgui_demo.cpp.
-//#define IMGUI_DISABLE                                     // Disable everything: all headers and source files will be empty.
-//#define IMGUI_DISABLE_DEMO_WINDOWS                        // Disable demo windows: ShowDemoWindow()/ShowStyleEditor() will be empty. Not recommended.
-//#define IMGUI_DISABLE_METRICS_WINDOW                      // Disable metrics/debugger and other debug tools: ShowMetricsWindow() and ShowStackToolWindow() will be empty.
-
-//---- Don't implement some functions to reduce linkage requirements.
-//#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS   // [Win32] Don't implement default clipboard handler. Won't use and link with OpenClipboard/GetClipboardData/CloseClipboard etc. (user32.lib/.a, kernel32.lib/.a)
-//#define IMGUI_ENABLE_WIN32_DEFAULT_IME_FUNCTIONS          // [Win32] [Default with Visual Studio] Implement default IME handler (require imm32.lib/.a, auto-link for Visual Studio, -limm32 on command-line for MinGW)
-//#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCTIONS         // [Win32] [Default with non-Visual Studio compilers] Don't implement default IME handler (won't require imm32.lib/.a)
-//#define IMGUI_DISABLE_WIN32_FUNCTIONS                     // [Win32] Won't use and link with any Win32 function (clipboard, ime).
-//#define IMGUI_ENABLE_OSX_DEFAULT_CLIPBOARD_FUNCTIONS      // [OSX] Implement default OSX clipboard handler (need to link with '-framework ApplicationServices', this is why this is not the default).
-//#define IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS            // Don't implement ImFormatString/ImFormatStringV so you can implement them yourself (e.g. if you don't want to link with vsnprintf)
-//#define IMGUI_DISABLE_DEFAULT_MATH_FUNCTIONS              // Don't implement ImFabs/ImSqrt/ImPow/ImFmod/ImCos/ImSin/ImAcos/ImAtan2 so you can implement them yourself.
-//#define IMGUI_DISABLE_FILE_FUNCTIONS                      // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle at all (replace them with dummies)
-//#define IMGUI_DISABLE_DEFAULT_FILE_FUNCTIONS              // Don't implement ImFileOpen/ImFileClose/ImFileRead/ImFileWrite and ImFileHandle so you can implement them yourself if you don't want to link with fopen/fclose/fread/fwrite. This will also disable the LogToTTY() function.
-//#define IMGUI_DISABLE_DEFAULT_ALLOCATORS                  // Don't implement default allocators calling malloc()/free() to avoid linking with them. You will need to call ImGui::SetAllocatorFunctions().
-//#define IMGUI_DISABLE_SSE                                 // Disable use of SSE intrinsics even if available
-
-//---- Include imgui_user.h at the end of imgui.h as a convenience
-//#define IMGUI_INCLUDE_IMGUI_USER_H
-
-//---- Pack colors to BGRA8 instead of RGBA8 (to avoid converting from one to another)
-//#define IMGUI_USE_BGRA_PACKED_COLOR
-
-//---- Use 32-bit for ImWchar (default is 16-bit) to support unicode planes 1-16. (e.g. point beyond 0xFFFF like emoticons, dingbats, symbols, shapes, ancient languages, etc...)
-//#define IMGUI_USE_WCHAR32
-
-//---- Avoid multiple STB libraries implementations, or redefine path/filenames to prioritize another version
-// By default the embedded implementations are declared static and not available outside of Dear ImGui sources files.
-//#define IMGUI_STB_TRUETYPE_FILENAME   "my_folder/stb_truetype.h"
-//#define IMGUI_STB_RECT_PACK_FILENAME  "my_folder/stb_rect_pack.h"
-//#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
-//#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
-
-//---- Use stb_printf's faster implementation of vsnprintf instead of the one from libc (unless IMGUI_DISABLE_DEFAULT_FORMAT_FUNCTIONS is defined)
-// Requires 'stb_sprintf.h' to be available in the include path. Compatibility checks of arguments and formats done by clang and GCC will be disabled in order to support the extra formats provided by STB sprintf.
-// #define IMGUI_USE_STB_SPRINTF
-
-//---- Use FreeType to build and rasterize the font atlas (instead of stb_truetype which is embedded by default in Dear ImGui)
-// Requires FreeType headers to be available in the include path. Requires program to be compiled with 'misc/freetype/imgui_freetype.cpp' (in this repository) + the FreeType library (not provided).
-// On Windows you may use vcpkg with 'vcpkg install freetype --triplet=x64-windows' + 'vcpkg integrate install'.
-//#define IMGUI_ENABLE_FREETYPE
-
-//---- Use stb_truetype to build and rasterize the font atlas (default)
-// The only purpose of this define is if you want force compilation of the stb_truetype backend ALONG with the FreeType backend.
-//#define IMGUI_ENABLE_STB_TRUETYPE
-
-//---- Define constructor and implicit cast operators to convert back<>forth between your math types and ImVec2/ImVec4.
-// This will be inlined as part of ImVec2 and ImVec4 class declarations.
-
-#include <glm/glm.hpp>
-
-#define IM_VEC2_CLASS_EXTRA                                             \
-	bool operator==(glm::vec2 rhs) { return x == rhs.x && y == rhs.y; } \
-	bool operator!=(glm::vec2 rhs) { return (*this) == rhs; }           \
-	bool operator==(ImVec2 rhs) { return x == rhs.x && y == rhs.y; }    \
-	bool operator!=(ImVec2 rhs) { return (*this) == rhs; }
-
-
-#define IM_VEC4_CLASS_EXTRA                                                                         \
-	bool operator==(glm::vec4 rhs) { return x == rhs.x && y == rhs.y && z == rhs.z && w == rhs.w; } \
-	bool operator!=(glm::vec4 rhs) { return (*this) == rhs; }                                       \
-	bool operator==(ImVec4 rhs) { return x == rhs.x && y == rhs.y && z == rhs.z && w == rhs.w; }    \
-	bool operator!=(ImVec4 rhs) { return (*this) == rhs; }
-
-
-//---- Use 32-bit vertex indices (default is 16-bit) is one way to allow large meshes with more than 64K vertices.
-// Your renderer backend will need to support it (most example renderer backends support both 16/32-bit indices).
-// Another way to allow large meshes while keeping 16-bit indices is to handle ImDrawCmd::VtxOffset in your renderer.
-// Read about ImGuiBackendFlags_RendererHasVtxOffset for details.
-//#define ImDrawIdx unsigned int
-
-//---- Override ImDrawCallback signature (will need to modify renderer backends accordingly)
-//struct ImDrawList;
-//struct ImDrawCmd;
-//typedef void (*MyImDrawCallback)(const ImDrawList* draw_list, const ImDrawCmd* cmd, void* my_renderer_user_data);
-//#define ImDrawCallback MyImDrawCallback
-
-//---- Debug Tools: Macro to break in Debugger
-// (use 'Metrics->Tools->Item Picker' to pick widgets with the mouse and break into them for easy debugging.)
-//#define IM_DEBUG_BREAK  IM_ASSERT(0)
-//#define IM_DEBUG_BREAK  __debugbreak()
-
-//---- Debug Tools: Have the Item Picker break in the ItemAdd() function instead of ItemHoverable(),
-// (which comes earlier in the code, will catch a few extra items, allow picking items other than Hovered one.)
-// This adds a small runtime cost which is why it is not enabled by default.
-//#define IMGUI_DEBUG_TOOL_ITEM_PICKER_EX
-
-//---- Debug Tools: Enable slower asserts
-//#define IMGUI_DEBUG_PARANOID
-
-//---- Tip: You can add extra functions within the ImGui:: namespace, here or in your own headers files.
-/*
-namespace ImGui
-{
-    void MyFunction(const char* name, const MyMatrix44& v);
-}
-*/

external/imgui

@@ -1 +0,0 @@
-Subproject commit 250333d895b1067533533dcfab137512745b9689

modules/CMakeLists.txt

@@ -3,22 +3,22 @@ add_subdirectory(./base)
 add_subdirectory(./time)
 add_subdirectory(./logger)
 add_subdirectory(./debug)
-
+add_subdirectory(./math)
+# 
 add_subdirectory(./asset_baker)
 add_subdirectory(./asset_parser)
-add_subdirectory(./asset_manager)
-
+# add_subdirectory(./asset_manager)
+# 
 add_subdirectory(./camera)
-add_subdirectory(./input)
-add_subdirectory(./ui)
-
-add_subdirectory(./window)
-add_subdirectory(./renderer)
+# add_subdirectory(./input)
+# add_subdirectory(./ui)
+# 
+add_subdirectory(./surface)
+# add_subdirectory(./renderer)
 add_subdirectory(./ecs)
-
+# 
 add_subdirectory(./app)
 
 # apps 
 add_subdirectory(./mirror)
-
 add_subdirectory(test)

modules/app/CMakeLists.txt

@@ -1,21 +1,2 @@
-add_library_module(app
-    application.cpp
-    layer.cpp
-    layer_stack.cpp
-)
-
-target_link_libraries(app
-PUBLIC 
-    renderer
-    logger
-    ui
-    asset_parser
-    asset_manager
-    lt_debug 
-    ecs 
-    window
-    glad
-    time
-    opengl::opengl
-    EnTT::EnTT
-)
+add_library_module(app application.cpp)
+target_link_libraries(app PRIVATE lt_debug)

modules/app/include/app/application.hpp

@@ -1,77 +0,0 @@
-#pragma once
-
-#include <time/timer.hpp>
-
-namespace lt {
-
-class Renderer;
-class Window;
-class Event;
-class GraphicsContext;
-class UserInterface;
-class LayerStack;
-
-extern Scope<class Application> create_application();
-
-class Application
-{
-public:
-	Application(const Application &) = delete;
-
-	Application(Application &&) = delete;
-
-	auto operator=(const Application &) -> Application & = delete;
-
-	auto operator=(Application &&) -> Application & = delete;
-
-	virtual ~Application();
-
-	[[nodiscard]] auto sanity_check() const -> bool;
-
-	void game_loop();
-
-	[[nodiscard]] auto get_window() -> Window &
-	{
-		return *m_window;
-	}
-
-	[[nodiscard]] auto get_layer_stack() -> LayerStack &
-	{
-		return *m_layer_stack;
-	}
-
-	static void quit();
-
-protected:
-	Application();
-
-private:
-	void update_layers();
-
-	void render_layers();
-
-	void render_user_interface();
-
-	void poll_events();
-
-	void on_event(const Event &event);
-
-	void log_debug_data() const;
-
-	Timer m_timer;
-
-	Scope<Window> m_window;
-
-	Scope<UserInterface> m_user_interface;
-
-	Scope<GraphicsContext> m_graphics_context;
-
-	Scope<Renderer> m_renderer;
-
-	Scope<LayerStack> m_layer_stack;
-
-	static Application *s_instance;
-};
-
-
-} // namespace lt

modules/app/include/app/layer.hpp

@@ -1,116 +0,0 @@
-#pragma once
-
-namespace lt {
-
-class Event;
-
-class MouseMovedEvent;
-class ButtonPressedEvent;
-class ButtonReleasedEvent;
-class WheelScrolledEvent;
-class KeyPressedEvent;
-class KeyRepeatEvent;
-class KeyReleasedEvent;
-class SetCharEvent;
-class WindowClosedEvent;
-class WindowResizedEvent;
-class WindowMovedEvent;
-class WindowLostFocusEvent;
-class WindowGainFocusEvent;
-
-class Layer
-{
-public:
-	Layer(std::string name);
-
-	virtual ~Layer() = default;
-
-	[[nodiscard]] auto get_name() const -> const std::string &
-	{
-		return m_layer_name;
-	}
-
-	virtual void on_update(float deltaTime)
-	{
-	}
-
-	virtual void on_user_interface_update()
-	{
-	}
-
-	virtual void on_render()
-	{
-	}
-
-	auto on_event(const Event &event) -> bool;
-
-protected:
-	std::string m_layer_name;
-
-	virtual auto on_mouse_moved(const MouseMovedEvent & /*event*/) -> bool
-	{
-		return false;
-	}
-
-	virtual auto on_button_pressed(const ButtonPressedEvent & /*event*/) -> bool
-	{
-		return false;
-	}
-
-	virtual auto on_button_released(const ButtonReleasedEvent & /*event*/) -> bool
-	{
-		return false;
-	}
-
-	virtual auto on_wheel_scrolled(const WheelScrolledEvent & /*event*/) -> bool
-	{
-		return false;
-	}
-
-	virtual auto on_key_pressed(const KeyPressedEvent & /*event*/) -> bool
-	{
-		return false;
-	}
-
-	virtual auto on_key_repeat(const KeyRepeatEvent & /*event*/) -> bool
-	{
-		return false;
-	}
-
-	virtual auto on_key_released(const KeyReleasedEvent & /*event*/) -> bool
-	{
-		return false;
-	}
-
-	virtual auto on_set_char(const SetCharEvent & /*event*/) -> bool
-	{
-		return false;
-	}
-
-	virtual auto on_window_closed(const WindowClosedEvent & /*event*/) -> bool
-	{
-		return false;
-	}
-
-	virtual auto on_window_resized(const WindowResizedEvent & /*event*/) -> bool
-	{
-		return false;
-	}
-
-	virtual auto on_window_moved(const WindowMovedEvent & /*event*/) -> bool
-	{
-		return false;
-	}
-
-	virtual auto on_window_lost_focus(const WindowLostFocusEvent & /*event*/) -> bool
-	{
-		return false;
-	}
-
-	virtual auto on_window_gain_focus(const WindowGainFocusEvent & /*event*/) -> bool
-	{
-		return false;
-	}
-};
-
-} // namespace lt

modules/app/include/app/layer_stack.hpp

@@ -1,50 +0,0 @@
-#pragma once
-
-namespace lt {
-
-class Layer;
-class Event;
-
-class LayerStack
-{
-public:
-	template<typename Layer_T, typename... Args>
-	void emplace_layer(Args &&...args)
-	{
-		attach_layer(create_ref<Layer_T>(std::forward<Args>(args)...));
-	}
-
-	void attach_layer(Ref<Layer> layer);
-
-	void detach_layer(const Ref<Layer> &layer);
-
-	[[nodiscard]] auto is_empty() const -> bool
-	{
-		return m_layers.empty();
-	}
-
-	[[nodiscard]] auto begin() -> std::vector<Ref<Layer>>::iterator
-	{
-		return m_layers.begin();
-	}
-
-	[[nodiscard]] auto end() -> std::vector<Ref<Layer>>::iterator
-	{
-		return m_layers.end();
-	}
-
-	[[nodiscard]] auto rbegin() -> std::vector<Ref<Layer>>::reverse_iterator
-	{
-		return m_layers.rbegin();
-	}
-
-	[[nodiscard]] auto rend() -> std::vector<Ref<Layer>>::reverse_iterator
-	{
-		return m_layers.rend();
-	}
-
-private:
-	std::vector<Ref<Layer>> m_layers;
-};
-
-} // namespace lt

modules/app/private/application.cpp

@@ -0,0 +1,48 @@
+#include <app/application.hpp>
+#include <app/system.hpp>
+
+namespace lt::app {
+
+void Application::game_loop()
+{
+	while (true)
+	{
+		for (auto &system : m_systems)
+		{
+			if (system->tick())
+			{
+				return;
+			}
+		}
+
+		for (auto &system : m_systems_to_be_registered)
+		{
+			m_systems.emplace_back(system)->on_register();
+		}
+
+		for (auto &system : m_systems_to_be_unregistered)
+		{
+			m_systems.erase(
+			    std::remove(m_systems.begin(), m_systems.end(), system),
+			    m_systems.end()
+			);
+		}
+
+		if (m_systems.empty())
+		{
+			return;
+		}
+	}
+}
+
+void Application::register_system(Ref<app::ISystem> system)
+{
+	m_systems.emplace_back(std::move(system));
+}
+
+void Application::unregister_system(Ref<app::ISystem> system)
+{
+	m_systems_to_be_unregistered.emplace_back(std::move(system));
+}
+
+} // namespace lt::app

modules/app/public/application.hpp

@@ -0,0 +1,44 @@
+#pragma once
+
+namespace lt::app {
+
+class ISystem;
+
+extern Scope<class Application> create_application();
+
+/** The main application class.
+ * Think of this like an aggregate of systems, you register systems through this interface.
+ * Then they'll tick every "application frame".
+ */
+class Application
+{
+public:
+	Application(const Application &) = delete;
+
+	Application(Application &&) = delete;
+
+	auto operator=(const Application &) -> Application & = delete;
+
+	auto operator=(Application &&) -> Application & = delete;
+
+	virtual ~Application() = default;
+
+	void game_loop();
+
+	void register_system(Ref<app::ISystem> system);
+
+	void unregister_system(Ref<app::ISystem> system);
+
+protected:
+	Application() = default;
+
+private:
+	std::vector<Ref<app::ISystem>> m_systems;
+
+	std::vector<Ref<app::ISystem>> m_systems_to_be_unregistered;
+
+	std::vector<Ref<app::ISystem>> m_systems_to_be_registered;
+};
+
+
+} // namespace lt::app

modules/app/public/entrypoint.hpp

@@ -2,21 +2,21 @@
 
 #include <app/application.hpp>
 
-int main(int argc, char *argv[]) // NOLINT
+auto main(int argc, char *argv[]) -> int32_t
 try
 {
 	std::ignore = argc;
 	std::ignore = argv;
 
-	auto application = lt::Scope<lt::Application> {};
+	auto application = lt::Scope<lt::app::Application> {};
 
-	application = lt::create_application();
-
-	lt::ensure(application, "Failed to create application");
-	lt::ensure(application->sanity_check(), "Failed to verify the sanity of the application");
+	application = lt::app::create_application();
+	if (!application)
+	{
+		throw std::runtime_error { "Failed to create application\n" };
+	}
 
 	application->game_loop();
-
 	return EXIT_SUCCESS;
 }
 catch (const std::exception &exp)

modules/app/public/system.hpp

@@ -0,0 +1,27 @@
+#pragma once
+
+namespace lt::app {
+
+class ISystem
+{
+public:
+	ISystem() = default;
+
+	virtual ~ISystem() = default;
+
+	ISystem(ISystem &&) = default;
+
+	ISystem(const ISystem &) = delete;
+
+	auto operator=(ISystem &&) -> ISystem & = default;
+
+	auto operator=(const ISystem &) -> ISystem & = delete;
+
+	virtual void on_register() = 0;
+
+	virtual void on_unregister() = 0;
+
+	virtual auto tick() -> bool = 0;
+};
+
+} // namespace lt::app

modules/app/src/application.cpp

@@ -1,203 +0,0 @@
-#include <app/application.hpp>
-#include <app/layer.hpp>
-#include <app/layer_stack.hpp>
-#include <asset_manager/asset_manager.hpp>
-#include <debug/assertions.hpp>
-#include <input/events/event.hpp>
-#include <input/events/keyboard.hpp>
-#include <input/events/window.hpp>
-#include <input/input.hpp>
-#include <ranges>
-#include <renderer/blender.hpp>
-#include <renderer/graphics_context.hpp>
-#include <renderer/render_command.hpp>
-#include <renderer/renderer.hpp>
-#include <ui/ui.hpp>
-#include <window/linux/window.hpp>
-
-namespace lt {
-
-Application *Application::s_instance = nullptr;
-
-Application::Application(): m_window(nullptr)
-{
-	ensure(!s_instance, "Application constructed twice");
-	s_instance = this;
-
-	m_window = Window::create([this](auto &&PH1) { on_event(std::forward<decltype(PH1)>(PH1)); });
-
-	// create graphics context
-	m_graphics_context = GraphicsContext::create(
-	    GraphicsAPI::OpenGL,
-	    (GLFWwindow *)m_window->get_handle()
-	);
-
-	AssetManager::load_shader(
-	    "LT_ENGINE_RESOURCES_TEXTURE_SHADER",
-	    "data/assets/shaders/texture/vs.asset",
-	    "data/assets/shaders/texture/ps.asset"
-	);
-
-	AssetManager::load_shader(
-	    "LT_ENGINE_RESOURCES_TINTED_TEXTURE_SHADER",
-	    "data/assets/shaders/tinted_texture/vs.asset",
-	    "data/assets/shaders/tinted_texture/ps.asset"
-	);
-
-	AssetManager::load_shader(
-	    "LT_ENGINE_RESOURCES_QUAD_SHADER",
-	    "data/assets/shaders/quads/vs.asset",
-	    "data/assets/shaders/quads/ps.asset"
-	);
-
-	m_renderer = Renderer::create(
-	    (GLFWwindow *)m_window->get_handle(),
-	    lt::GraphicsContext::get_shared_context(),
-	    Renderer::CreateInfo {
-	        .quad_renderer_shader = AssetManager::get_shader("LT_ENGINE_RESOURCES_QUAD_SHADER"),
-	        .texture_renderer_shader = AssetManager::get_shader(
-	            "LT_ENGINE_RESOURCES_TEXTURE_SHADER"
-	        ),
-	        .tinted_texture_renderer_shader = AssetManager::get_shader(
-	            "LT_ENGINE_RESOURCES_TINTED_"
-	            "TEXTURE_SHADER"
-	        ),
-	    }
-	);
-	ensure(m_graphics_context, "lWindow::lWindow: failed to create 'GraphicsContext'");
-
-	m_user_interface = UserInterface::create(
-	    (GLFWwindow *)m_window->get_handle(),
-	    lt::GraphicsContext::get_shared_context()
-	);
-
-	m_layer_stack = create_scope<LayerStack>();
-}
-
-Application::~Application()
-{
-	/** This is required to make forward-declarations possible:
-	 * https://stackoverflow.com/questions/34072862/why-is-error-invalid-application-of-sizeof-to-an-incomplete-type-using-uniqu
-	 */
-}
-
-void Application::game_loop()
-{
-	m_window->set_visibility(true);
-
-	while (!m_window->is_closed())
-	{
-		update_layers();
-		render_layers();
-		render_user_interface();
-		poll_events();
-	}
-}
-
-void Application::quit()
-{
-	s_instance->m_window->close();
-}
-
-void Application::update_layers()
-{
-	for (auto &it : *m_layer_stack)
-	{
-		// narrowing double -> float
-		it->on_update(static_cast<float>(m_timer.elapsed_time().count()));
-	}
-
-	// TODO(Light): each layer should have their own "delta time"
-	m_timer.reset();
-}
-
-void Application::render_layers()
-{
-	m_renderer->begin_frame();
-
-	for (auto &it : *m_layer_stack)
-	{
-		it->on_render();
-	}
-
-	m_renderer->end_frame();
-}
-
-void Application::render_user_interface()
-{
-	m_user_interface->begin();
-
-	for (auto &it : *m_layer_stack)
-	{
-		it->on_user_interface_update();
-	}
-
-	m_user_interface->end();
-}
-
-void Application::poll_events()
-{
-	m_window->poll_events();
-}
-
-void Application::on_event(const Event &event)
-{
-	// window
-	if (event.has_category(WindowEventCategory))
-	{
-		m_window->on_event(event);
-
-		if (event.get_event_type() == EventType::WindowResized)
-		{
-			m_renderer->on_window_resize(dynamic_cast<const WindowResizedEvent &>(event));
-		}
-	}
-
-	// input
-	if (event.has_category(InputEventCategory))
-	{
-		Input::instance().on_event(event);
-
-		if (!Input::instance().is_receiving_game_events())
-		{
-			return;
-		}
-	}
-
-	for (auto &it : std::ranges::reverse_view(*m_layer_stack))
-	{
-		if (it->on_event(event))
-		{
-			return;
-		}
-	}
-}
-
-[[nodiscard]] auto Application::sanity_check() const -> bool
-{
-	log_inf("Checking application sanity...");
-	ensure(s_instance, "Application not constructed!?");
-	ensure(m_window, "Window is not initialized");
-	ensure(m_user_interface, "User interface is not initialized");
-	ensure(m_graphics_context, "Graphics context is not initialized");
-	ensure(m_renderer, "Renderer is not initialized");
-	ensure(m_layer_stack, "Layer_stack is not initialized");
-	ensure(!m_layer_stack->is_empty(), "Layer_stack is empty");
-
-	log_inf("Logging application state...");
-	this->log_debug_data();
-	m_graphics_context->log_debug_data();
-	m_user_interface->log_debug_data();
-
-	return true;
-}
-
-void Application::log_debug_data() const
-{
-	log_inf("Platform::");
-	log_inf("       Platform name: {}", constants::platform_name);
-	log_inf("       Platform identifier: {}", std::to_underlying(constants::platform));
-	log_inf("       CWD: {}", std::filesystem::current_path().generic_string());
-}
-
-} // namespace lt

modules/app/src/layer.cpp

@@ -1,47 +0,0 @@
-#include <app/layer.hpp>
-#include <input/events/char.hpp>
-#include <input/events/event.hpp>
-#include <input/events/keyboard.hpp>
-#include <input/events/mouse.hpp>
-#include <input/events/window.hpp>
-
-namespace lt {
-
-Layer::Layer(std::string name): m_layer_name(std::move(name))
-{
-}
-
-auto Layer::on_event(const Event &event) -> bool
-{
-	switch (event.get_event_type())
-	{
-	case EventType::MouseMoved: return on_mouse_moved(dynamic_cast<const MouseMovedEvent &>(event));
-	case EventType::ButtonPressed:
-		return on_button_pressed(dynamic_cast<const ButtonPressedEvent &>(event));
-	case EventType::ButtonReleased:
-		return on_button_released(dynamic_cast<const ButtonReleasedEvent &>(event));
-	case EventType::WheelScrolled:
-		return on_wheel_scrolled(dynamic_cast<const WheelScrolledEvent &>(event));
-
-	case EventType::KeyPressed: return on_key_pressed(dynamic_cast<const KeyPressedEvent &>(event));
-	case EventType::KeyRepeated: return on_key_repeat(dynamic_cast<const KeyRepeatEvent &>(event));
-	case EventType::KeyReleased:
-		return on_key_released(dynamic_cast<const KeyReleasedEvent &>(event));
-	case EventType::SetChar: return on_set_char(dynamic_cast<const SetCharEvent &>(event));
-
-	case EventType::WindowClosed:
-		return on_window_closed(dynamic_cast<const WindowClosedEvent &>(event));
-	case EventType::WindowResized:
-		return on_window_resized(dynamic_cast<const WindowResizedEvent &>(event));
-	case EventType::WindowMoved:
-		return on_window_moved(dynamic_cast<const WindowMovedEvent &>(event));
-	case EventType::WindowLostFocus:
-		return on_window_lost_focus(dynamic_cast<const WindowLostFocusEvent &>(event));
-	case EventType::WindowGainFocus:
-		return on_window_gain_focus(dynamic_cast<const WindowGainFocusEvent &>(event));
-
-	default: ensure(false, "Invalid event: {}", event.get_info_lt_log());
-	}
-}
-
-} // namespace lt

modules/app/src/layer_stack.cpp

@@ -1,18 +0,0 @@
-#include <app/layer.hpp>
-#include <app/layer_stack.hpp>
-
-namespace lt {
-
-void LayerStack::attach_layer(Ref<Layer> layer)
-{
-	log_trc("Attaching layer [{}]", layer->get_name());
-	m_layers.emplace_back(std::move(layer));
-}
-
-void LayerStack::detach_layer(const Ref<Layer> &layer)
-{
-	log_trc("Detaching layer [{}]", layer->get_name());
-	m_layers.erase(std::find(m_layers.begin(), m_layers.end(), layer));
-}
-
-} // namespace lt

modules/asset_baker/CMakeLists.txt

@@ -1,5 +1,5 @@
 add_executable_module(
-    asset_baker baker.cpp
+    asset_baker entrypoint/baker.cpp
 )
 
 target_link_libraries(

modules/asset_baker/public/bakers.hpp

@@ -131,7 +131,8 @@ public:
 		return "TextLoader";
 	}
 
-	[[nodiscard]] auto load(const std::filesystem::path& file_path) const -> Assets::TextAsset::PackageData
+	[[nodiscard]] auto load(const std::filesystem::path &file_path) const
+	    -> Assets::TextAsset::PackageData
 	{
 		auto stream = std::ifstream { file_path, std::ios::binary };
 		if (!stream.good())

modules/asset_manager/CMakeLists.txt

@@ -5,5 +5,5 @@ add_library_module(asset_manager
 target_link_libraries(
   asset_manager
   PUBLIC asset_parser
-  PRIVATE renderer
+  PRIVATE logger
 )

modules/asset_parser/CMakeLists.txt

@@ -6,7 +6,6 @@ add_library_module(asset_parser
 
 target_link_libraries(
     asset_parser
-    PUBLIC LZ4::lz4_static 
-    PUBLIC nlohmann_json::nlohmann_json 
-    PUBLIC logger
+    PRIVATE LZ4::lz4_static 
+    PRIVATE logger
 )

modules/asset_parser/private/assets/text.cpp

@@ -1,6 +1,5 @@
 #include <asset_parser/assets/text.hpp>
 #include <lz4.h>
-#include <nlohmann/json.hpp>
 
 namespace Assets {
 

modules/asset_parser/private/assets/texture.cpp

@@ -1,6 +1,5 @@
 #include <asset_parser/assets/texture.hpp>
 #include <lz4.h>
-#include <nlohmann/json.hpp>
 
 namespace Assets {
 

modules/asset_parser/public/assets/text.hpp

@@ -1,7 +1,7 @@
 #pragma once
 
+#include <asset_parser/compressors/compressors.hpp>
 #include <asset_parser/parser.hpp>
-#include <compressors/compressors.hpp>
 #include <cstdint>
 #include <filesystem>
 #include <fstream>

modules/asset_parser/public/assets/texture.hpp

@@ -1,7 +1,7 @@
 #pragma once
 
+#include <asset_parser/compressors/compressors.hpp>
 #include <asset_parser/parser.hpp>
-#include <compressors/compressors.hpp>
 #include <cstdint>
 #include <filesystem>
 #include <fstream>

modules/asset_parser/public/parser.hpp

@@ -1,6 +1,6 @@
 #pragma once
 
-#include <compressors/compressors.hpp>
+#include <asset_parser/compressors/compressors.hpp>
 #include <cstdint>
 #include <filesystem>
 #include <fstream>

modules/base/CMakeLists.txt

@@ -1,3 +1,2 @@
 add_library_module(base)
-
-target_precompile_headers(base INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/src/pch.hpp)
+target_precompile_headers(base INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/private/pch.hpp)

modules/camera/CMakeLists.txt

@@ -1,3 +1,3 @@
 add_library_module(camera camera.cpp scene.cpp)
 
-target_link_libraries(camera PUBLIC glm::glm)
+target_link_libraries(camera PUBLIC math)

modules/camera/include/camera/camera.hpp

@@ -1,34 +0,0 @@
-#pragma once
-
-#include <glm/glm.hpp>
-
-namespace lt {
-
-class Camera
-{
-public:
-	Camera() = default;
-
-	[[nodiscard]] auto get_projection() const -> const glm::mat4 &
-	{
-		return m_projection;
-	}
-
-	[[nodiscard]] auto get_background_color() const -> const glm::vec4 &
-	{
-		return m_background_color;
-	}
-
-	void set_background_color(const glm::vec4 &color)
-	{
-		m_background_color = color;
-	}
-
-protected:
-	glm::mat4 m_projection {};
-
-private:
-	glm::vec4 m_background_color = glm::vec4(1.0f, 0.0f, 0.0f, 1.0f);
-};
-
-} // namespace lt

modules/camera/private/scene.cpp

@@ -1,11 +1,12 @@
 #include <camera/scene.hpp>
-#include <glm/gtc/matrix_transform.hpp>
+#include <math/algebra.hpp>
+#include <math/trig.hpp>
 
 namespace lt {
 
 SceneCamera::SceneCamera()
     : m_orthographic_specification { .size = 1000.0f, .near_plane = -1.0f, .far_plane = 10000.0f }
-    , m_perspective_specification { .vertical_fov = glm::radians(45.0f),
+    , m_perspective_specification { .vertical_fov = math::radians(45.0f),
 	                                .near_plane = 0.01f,
 	                                .far_plane = 10000.0f }
     , m_aspect_ratio(16.0f / 9.0f)
@@ -64,26 +65,19 @@ void SceneCamera::set_perspective_near_plane(float near_plane)
 
 void SceneCamera::calculate_projection()
 {
+	// TODO(Light): implement ortho perspective
 	if (m_projection_type == ProjectionType::Orthographic)
 	{
-		m_projection = glm::ortho(
-		    -m_orthographic_specification.size * 0.5f * m_aspect_ratio,
-		    m_orthographic_specification.size * 0.5f * m_aspect_ratio,
-		    -m_orthographic_specification.size * 0.5f,
-		    m_orthographic_specification.size * 0.5f,
-		    m_orthographic_specification.far_plane,
-		    m_orthographic_specification.near_plane
-		);
-	}
-	else // perspective
-	{
-		m_projection = glm::perspective(
-		    m_perspective_specification.vertical_fov,
-		    m_aspect_ratio,
-		    m_perspective_specification.near_plane,
-		    m_perspective_specification.far_plane
-		);
+		// throw std::runtime_error { "ortho perspective not supported yet" };
 	}
+
+	// defaults to perspective for now...
+	m_projection = math::perspective(
+	    m_perspective_specification.vertical_fov,
+	    m_aspect_ratio,
+	    m_perspective_specification.near_plane,
+	    m_perspective_specification.far_plane
+	);
 }
 
 } // namespace lt

modules/camera/public/camera.hpp

@@ -0,0 +1,35 @@
+#pragma once
+
+#include <math/mat4.hpp>
+#include <math/vec4.hpp>
+
+namespace lt {
+
+class Camera
+{
+public:
+	Camera() = default;
+
+	[[nodiscard]] auto get_projection() const -> const math::mat4 &
+	{
+		return m_projection;
+	}
+
+	[[nodiscard]] auto get_background_color() const -> const math::vec4 &
+	{
+		return m_background_color;
+	}
+
+	void set_background_color(const math::vec4 &color)
+	{
+		m_background_color = color;
+	}
+
+protected:
+	math::mat4 m_projection;
+
+private:
+	math::vec4 m_background_color = math::vec4(1.0f, 0.0f, 0.0f, 1.0f);
+};
+
+} // namespace lt

modules/camera/public/component.hpp

@@ -1,7 +1,6 @@
 #pragma once
 
 #include <camera/scene.hpp>
-#include <glm/glm.hpp>
 
 namespace lt {
 

modules/debug/CMakeLists.txt

@@ -1,3 +1,3 @@
 add_library_module(lt_debug instrumentor.cpp)
 target_link_libraries(lt_debug PUBLIC logger)
-target_precompile_headers(lt_debug PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src/pch.hpp)
+target_precompile_headers(lt_debug PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/private/pch.hpp)

modules/debug/include/debug/assertions.hpp

@@ -1,36 +0,0 @@
-#pragma once
-
-#include <logger/logger.hpp>
-
-namespace lt {
-
-struct FailedAssertion: std::exception
-{
-	FailedAssertion(const char *file, int line)
-	{
-		log_crt("Assertion failed in: {} (line {})", file, line);
-	}
-};
-
-
-template<typename Expression_T, typename... Args>
-constexpr void ensure(Expression_T &&expression, std::format_string<Args...> fmt, Args &&...args)
-{
-	if (!static_cast<bool>(expression))
-	{
-		Logger::log(LogLvl::critical, fmt, std::forward<Args>(args)...);
-		throw ::lt::FailedAssertion(__FILE__, __LINE__);
-	}
-}
-
-template<typename Expression_T>
-constexpr void ensure(Expression_T &&expression, const char *message)
-{
-	if (!static_cast<bool>(expression))
-	{
-		Logger::log(LogLvl::critical, message);
-		throw ::lt::FailedAssertion(__FILE__, __LINE__);
-	}
-}
-
-} // namespace lt

modules/debug/private/instrumentor.cpp

@@ -1,5 +1,5 @@
-#include <debug/instrumentor.hpp>
 #include <logger/logger.hpp>
+#include <lt_debug/instrumentor.hpp>
 
 namespace lt {
 

modules/debug/private/pch.hpp

@@ -0,0 +1,3 @@
+#pragma once
+
+#include <lt_debug/assertions.hpp>

modules/debug/public/assertions.hpp

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <format>
+#include <logger/logger.hpp>
+#include <source_location>
+
+namespace lt {
+
+template<typename Expression_T, typename... Args_T>
+struct ensure
+{
+	ensure(
+	    Expression_T expression,
+	    std::format_string<Args_T...> fmt,
+	    Args_T &&...args,
+	    const std::source_location &location = std::source_location::current()
+	)
+	{
+		if (!static_cast<bool>(expression))
+		{
+			throw std::runtime_error { std::format(
+				"exception: {}\nlocation: {}:{}",
+				std::format(fmt, std::forward<Args_T>(args)...),
+				location.file_name(),
+				location.line()
+			) };
+		}
+	}
+};
+
+
+template<typename Expression_T, typename... Args_T>
+ensure(Expression_T, std::format_string<Args_T...>, Args_T &&...)
+    -> ensure<Expression_T, Args_T...>;
+
+} // namespace lt

modules/debug/src/pch.hpp

@@ -1,3 +0,0 @@
-#pragma once
-
-#include <debug/assertions.hpp>

modules/ecs/CMakeLists.txt

@@ -1,5 +1,4 @@
-add_library_module(ecs entity.cpp scene.cpp uuid.cpp serializer.cpp)
+add_library_module(ecs entity.cpp scene.cpp uuid.cpp )
 target_link_libraries(ecs 
-    PUBLIC logger lt_debug EnTT::EnTT renderer input camera
-    PRIVATE yaml-cpp::yaml-cpp asset_manager
+    PUBLIC logger lt_debug EnTT::EnTT  input camera math
 )

modules/ecs/include/ecs/components/transform.hpp

@@ -1,45 +0,0 @@
-#pragma once
-
-#define GLM_ENABLE_EXPERIMENTAL
-
-#include <glm/glm.hpp>
-#include <glm/gtc/matrix_transform.hpp>
-#include <glm/gtx/transform.hpp>
-
-namespace lt {
-
-struct TransformComponent
-{
-	TransformComponent(const TransformComponent &) = default;
-
-	TransformComponent(
-	    const glm::vec3 &_translation = glm::vec3(0.0f, 0.0f, 0.0f),
-	    const glm::vec3 &_scale = glm::vec3(1.0f, 1.0f, 1.0f),
-	    const glm::vec3 &_rotation = glm::vec3(0.0f, 0.0f, 0.0f)
-	)
-
-	    : translation(_translation)
-	    , scale(_scale)
-	    , rotation(_rotation)
-	{
-	}
-
-	[[nodiscard]] auto get_transform() const -> glm::mat4
-	{
-		return glm::translate(translation) * glm::rotate(rotation.z, glm::vec3(0.0f, 0.0f, 1.0f))
-		       * glm::scale(scale);
-	}
-
-	operator const glm::mat4() const
-	{
-		return get_transform();
-	}
-
-	glm::vec3 translation;
-
-	glm::vec3 scale;
-
-	glm::vec3 rotation;
-};
-
-} // namespace lt

modules/ecs/private/scene.cpp

@@ -0,0 +1,31 @@
+#include <ecs/components.hpp>
+#include <ecs/entity.hpp>
+#include <ecs/scene.hpp>
+
+namespace lt {
+
+auto Scene::create_entity(const std::string &name, const TransformComponent &transform) -> Entity
+{
+	return create_entity_with_uuid(name, UUID(), transform);
+}
+
+auto Scene::get_entity_by_tag(const std::string &tag) -> Entity
+{
+	return {};
+}
+
+auto Scene::create_entity_with_uuid(
+    const std::string &name,
+    UUID uuid,
+    const TransformComponent &transform
+) -> Entity
+{
+	auto entity = Entity { m_registry.create(), this };
+	entity.add_component<TagComponent>(name);
+	entity.add_component<TransformComponent>(transform);
+	entity.add_component<UUIDComponent>(uuid);
+
+	return entity;
+}
+
+} // namespace lt

modules/ecs/private/serializer.cpp

@@ -2,14 +2,16 @@
 #include <camera/component.hpp>
 #include <ecs/components.hpp>
 #include <ecs/serializer.hpp>
+#include <math/vec3.hpp>
+#include <math/vec4.hpp>
 #include <yaml-cpp/yaml.h>
 
 namespace YAML {
 
 template<>
-struct convert<glm::vec3>
+struct convert<lt::math::vec3>
 {
-	static auto encode(const glm::vec3 &rhs) -> Node
+	static auto encode(const lt::math::vec3 &rhs) -> Node
 	{
 		auto node = Node {};
 		node.push_back(rhs.x);
@@ -18,7 +20,7 @@ struct convert<glm::vec3>
 		return node;
 	}
 
-	static auto decode(const Node &node, glm::vec3 &rhs) -> bool
+	static auto decode(const Node &node, lt::math::vec3 &rhs) -> bool
 	{
 		if (!node.IsSequence() || node.size() != 3)
 		{
@@ -33,9 +35,9 @@ struct convert<glm::vec3>
 };
 
 template<>
-struct convert<glm::vec4>
+struct convert<lt::math::vec4>
 {
-	static auto encode(const glm::vec4 &rhs) -> Node
+	static auto encode(const lt::math::vec4 &rhs) -> Node
 	{
 		auto node = Node {};
 		node.push_back(rhs.x);
@@ -45,7 +47,7 @@ struct convert<glm::vec4>
 		return node;
 	}
 
-	static auto decode(const Node &node, glm::vec4 &rhs) -> bool
+	static auto decode(const Node &node, lt::math::vec4 &rhs) -> bool
 	{
 		if (!node.IsSequence() || node.size() != 4)
 		{
@@ -63,14 +65,14 @@ struct convert<glm::vec4>
 
 namespace lt {
 
-auto operator<<(YAML::Emitter &out, const glm::vec3 &v) -> YAML::Emitter &
+auto operator<<(YAML::Emitter &out, const math::vec3 &v) -> YAML::Emitter &
 {
 	out << YAML::Flow;
 	out << YAML::BeginSeq << v.x << v.y << v.z << YAML::EndSeq;
 	return out;
 }
 
-auto operator<<(YAML::Emitter &out, const glm::vec4 &v) -> YAML::Emitter &
+auto operator<<(YAML::Emitter &out, const math::vec4 &v) -> YAML::Emitter &
 {
 	out << YAML::Flow;
 	out << YAML::BeginSeq << v.x << v.y << v.z << v.w << YAML::EndSeq;
@@ -156,9 +158,10 @@ auto SceneSerializer::deserialize(const std::string &file_path) -> bool
 				                                      .get_component<TransformComponent>();
 
 				entityTransforomComponent.translation = transformComponent["Translation"]
-				                                            .as<glm::vec3>();
-				entityTransforomComponent.rotation = transformComponent["Rotation"].as<glm::vec3>();
-				entityTransforomComponent.scale = transformComponent["Scale"].as<glm::vec3>();
+				                                            .as<math::vec3>();
+				entityTransforomComponent.rotation = transformComponent["Rotation"]
+				                                         .as<math::vec3>();
+				entityTransforomComponent.scale = transformComponent["Scale"].as<math::vec3>();
 			}
 
 			/* #TEMPORARY SOLUTION# */
@@ -168,7 +171,7 @@ auto SceneSerializer::deserialize(const std::string &file_path) -> bool
 				auto &entitySpriteRendererComponent = deserializedEntity
 				                                          .add_component<SpriteRendererComponent>();
 				entitySpriteRendererComponent.tint = spriteRendererComponent["Tint"]
-				                                         .as<glm::vec4>();
+				                                         .as<math::vec4>();
 
 				auto texturePath = spriteRendererComponent["Texture"].as<std::string>();
 
@@ -213,7 +216,7 @@ auto SceneSerializer::deserialize(const std::string &file_path) -> bool
 				);
 
 				entityCameraComponent.camera.set_background_color(
-				    cameraSpecifications["BackgroundColor"].as<glm::vec4>()
+				    cameraSpecifications["BackgroundColor"].as<math::vec4>()
 				);
 
 				entityCameraComponent.isPrimary = cameraComponent["IsPrimary"].as<bool>();

modules/ecs/private/uuid.cpp

@@ -0,0 +1,14 @@
+#include <ecs/uuid.hpp>
+
+namespace lt {
+
+std::mt19937_64 UUID::s_engine = std::mt19937_64(std::random_device()());
+
+std::uniform_int_distribution<uint64_t>
+    UUID::s_distribution = std::uniform_int_distribution<uint64_t> {};
+
+UUID::UUID(uint64_t uuid /* = -1 */): m_uuid(uuid == -1 ? s_distribution(s_engine) : uuid)
+{
+}
+
+} // namespace lt

modules/ecs/public/components/sprite_renderer.hpp

@@ -1,6 +1,6 @@
 #pragma once
 
-#include <glm/glm.hpp>
+#include <math/vec4.hpp>
 #include <utility>
 
 namespace lt {
@@ -15,7 +15,7 @@ struct SpriteRendererComponent
 
 	SpriteRendererComponent(
 	    Ref<Texture> _texture,
-	    const glm::vec4 &_tint = glm::vec4(1.0f, 1.0f, 1.0f, 1.0f)
+	    const math::vec4 &_tint = math::vec4 { 1.0f, 1.0f, 1.0f, 1.0f }
 	)
 	    : texture(std::move(std::move(_texture)))
 	    , tint(_tint)
@@ -29,7 +29,7 @@ struct SpriteRendererComponent
 
 	Ref<Texture> texture;
 
-	glm::vec4 tint {};
+	math::vec4 tint {};
 };
 
 } // namespace lt

modules/ecs/public/components/transform.hpp

@@ -0,0 +1,43 @@
+#pragma once
+
+#include <math/mat4.hpp>
+#include <math/vec3.hpp>
+
+namespace lt {
+
+struct TransformComponent
+{
+	TransformComponent(const TransformComponent &) = default;
+
+	TransformComponent(
+	    const math::vec3 &_translation = math::vec3(0.0f, 0.0f, 0.0f),
+	    const math::vec3 &_scale = math::vec3(1.0f, 1.0f, 1.0f),
+	    const math::vec3 &_rotation = math::vec3(0.0f, 0.0f, 0.0f)
+	)
+
+	    : translation(_translation)
+	    , scale(_scale)
+	    , rotation(_rotation)
+	{
+	}
+
+	[[nodiscard]] auto get_transform() const -> math::mat4
+	{
+		return math::translate(translation)
+		       * math::rotate(rotation.z, math::vec3 { 0.0f, 0.0f, 1.0f }) //
+		       * math::scale(scale);
+	}
+
+	operator const math::mat4() const
+	{
+		return get_transform();
+	}
+
+	math::vec3 translation;
+
+	math::vec3 scale;
+
+	math::vec3 rotation;
+};
+
+} // namespace lt

modules/ecs/public/scene.hpp

@@ -3,7 +3,7 @@
 #include <ecs/components/transform.hpp>
 #include <ecs/uuid.hpp>
 #include <entt/entt.hpp>
-#include <glm/glm.hpp>
+#include <functional>
 
 namespace lt {
 
@@ -13,11 +13,17 @@ class Framebuffer;
 class Scene
 {
 public:
-	void on_create();
+	template<typename... T>
+	auto group()
+	{
+		return m_registry.group(entt::get<T...>);
+	}
 
-	void on_update(float deltaTime);
-
-	void on_render(const Ref<Framebuffer> &targetFrameBuffer = nullptr);
+	template<typename T>
+	auto view()
+	{
+		return m_registry.view<T>();
+	}
 
 	auto create_entity(
 	    const std::string &name,
@@ -26,6 +32,12 @@ public:
 
 	auto get_entity_by_tag(const std::string &tag) -> Entity;
 
+	auto get_entt_registry() -> entt::registry &
+	{
+		return m_registry;
+	}
+
+
 private:
 	friend class Entity;
 
@@ -42,4 +54,12 @@ private:
 	) -> Entity;
 };
 
+namespace ecs {
+
+using Registry = Scene;
+
+using Entity = ::lt::Entity;
+
+} // namespace ecs
+
 } // namespace lt

modules/ecs/src/scene.cpp

@@ -1,111 +0,0 @@
-#include <camera/component.hpp>
-#include <ecs/components.hpp>
-#include <ecs/entity.hpp>
-#include <ecs/scene.hpp>
-#include <glm/glm.hpp>
-#include <renderer/renderer.hpp>
-
-namespace lt {
-
-void Scene::on_create()
-{
-	/* native scripts */
-	{
-		m_registry.view<NativeScriptComponent>().each([](NativeScriptComponent &nsc) {
-			if (nsc.instance == nullptr)
-			{
-				nsc.instance = nsc.CreateInstance();
-				nsc.instance->on_create();
-			}
-		});
-	}
-}
-
-void Scene::on_update(float deltaTime)
-{
-	/* native scripts */
-	{
-		m_registry.view<NativeScriptComponent>().each([=](NativeScriptComponent &nsc) {
-			nsc.instance->on_update(deltaTime);
-		});
-	}
-}
-
-void Scene::on_render(const Ref<Framebuffer> &targetFrameBuffer /* = nullptr */)
-{
-	auto *sceneCamera = (Camera *)nullptr;
-	auto *sceneCameraTransform = (TransformComponent *)nullptr;
-
-	/* scene camera */
-	{
-		m_registry.group(entt::get<TransformComponent, CameraComponent>)
-		    .each([&](TransformComponent &transformComp, CameraComponent &cameraComp) {
-			    if (cameraComp.isPrimary)
-			    {
-				    sceneCamera = &cameraComp.camera;
-				    sceneCameraTransform = &transformComp;
-			    }
-		    });
-	}
-
-	/* draw quads */
-	{
-		if (sceneCamera)
-		{
-			Renderer::begin_scene(sceneCamera, *sceneCameraTransform, targetFrameBuffer);
-
-			m_registry.group(entt::get<TransformComponent, SpriteRendererComponent>)
-			    .each([](TransformComponent &transformComp,
-			             SpriteRendererComponent &spriteRendererComp) {
-				    Renderer::draw_quad(
-				        transformComp,
-				        spriteRendererComp.tint,
-				        spriteRendererComp.texture
-				    );
-			    });
-
-			Renderer::end_scene();
-		}
-	}
-}
-
-auto Scene::create_entity(const std::string &name, const TransformComponent &transform) -> Entity
-{
-	return create_entity_with_uuid(name, UUID(), transform);
-}
-
-auto Scene::get_entity_by_tag(const std::string &tag) -> Entity
-{
-	// TagComponent tagComp(tag);
-	// entt::entity entity = entt::to_entity(m_registry, tagComp);
-	auto entity = Entity {};
-
-	m_registry.view<TagComponent>().each([&](TagComponent &tagComp) {
-		// if (tagComp.tag == tag)
-		// 	entity = entity(entt::to_entity(m_registry, tagComp), this);
-	});
-
-	if (entity.is_valid())
-	{
-		return entity;
-	}
-
-	ensure(false, "Scene::get_entity_by_tag: failed to find entity by tag: {}", tag);
-	return {};
-}
-
-auto Scene::create_entity_with_uuid(
-    const std::string &name,
-    UUID uuid,
-    const TransformComponent &transform
-) -> Entity
-{
-	auto entity = Entity { m_registry.create(), this };
-	entity.add_component<TagComponent>(name);
-	entity.add_component<TransformComponent>(transform);
-	entity.add_component<UUIDComponent>(uuid);
-
-	return entity;
-}
-
-} // namespace lt

modules/ecs/src/uuid.cpp

@@ -1,12 +0,0 @@
-#include <ecs/uuid.hpp>
-
-namespace lt {
-
-auto UUID::s_engine = std::mt19937_64(std::random_device()());
-auto UUID::s_distribution = std::uniform_int_distribution<uint64_t> {};
-
-UUID::UUID(uint64_t uuid /* = -1 */): m_uuid(uuid == -1 ? s_distribution(s_engine) : uuid)
-{
-}
-
-} // namespace lt

modules/input/CMakeLists.txt

@@ -1,2 +1,2 @@
 add_library_module(input input.cpp)
-target_link_libraries(input PUBLIC spdlog::spdlog glm::glm imgui logger)
+target_link_libraries(input PUBLIC surface math imgui::imgui logger)

modules/input/include/input/events/char.hpp

@@ -1,41 +0,0 @@
-#pragma once
-
-#include <input/events/event.hpp>
-#include <sstream>
-
-namespace lt {
-
-class SetCharEvent: public Event
-{
-public:
-	SetCharEvent(unsigned int character): m_character(character)
-	{
-	}
-
-	[[nodiscard]] auto get_character() const -> int
-	{
-		return m_character;
-	}
-
-	[[nodiscard]] auto get_info_lt_log() const -> std::string override
-	{
-		std::stringstream ss;
-		ss << "CharSet: " << m_character;
-		return ss.str();
-	}
-
-	[[nodiscard]] auto get_event_type() const -> EventType override
-	{
-		return ::lt::EventType::SetChar;
-	}
-
-	[[nodiscard]] auto has_category(EventCategory category) const -> bool override
-	{
-		return static_cast<uint8_t>(InputEventCategory | KeyboardEventCategory) & category;
-	}
-
-private:
-	const unsigned int m_character;
-};
-
-} // namespace lt

modules/input/include/input/events/event.hpp

@@ -1,56 +0,0 @@
-#pragma once
-
-namespace lt {
-
-enum class EventType : uint8_t
-{
-	None = 0,
-
-	// input
-	MouseMoved,
-	WheelScrolled,
-	ButtonPressed,
-	ButtonReleased,
-	KeyPressed,
-	KeyRepeated,
-	KeyReleased,
-	SetChar,
-
-	// window
-	WindowMoved,
-	WindowResized,
-	WindowClosed,
-	WindowLostFocus,
-	WindowGainFocus,
-};
-
-enum EventCategory : uint8_t
-{
-	None = 0,
-
-	WindowEventCategory = bit(0),
-	InputEventCategory = bit(1),
-	KeyboardEventCategory = bit(2),
-	MouseEventCategory = bit(3),
-};
-
-class Event
-{
-public:
-	Event() = default;
-
-	virtual ~Event() = default;
-
-	[[nodiscard]] virtual auto get_event_type() const -> EventType = 0;
-
-	[[nodiscard]] virtual auto get_info_lt_log() const -> std::string = 0;
-
-	[[nodiscard]] virtual auto has_category(EventCategory category) const -> bool = 0;
-
-	friend auto operator<<(std::ostream &os, const Event &e) -> std::ostream &
-	{
-		return os << e.get_info_lt_log();
-	}
-};
-
-} // namespace lt

modules/input/include/input/events/keyboard.hpp

@@ -1,107 +0,0 @@
-#pragma once
-
-#include <input/events/event.hpp>
-#include <sstream>
-
-namespace lt {
-
-class KeyPressedEvent: public Event
-{
-public:
-	KeyPressedEvent(int key): m_key(key)
-	{
-	}
-
-	[[nodiscard]] auto get_key() const -> int
-	{
-		return m_key;
-	}
-
-	[[nodiscard]] auto get_info_lt_log() const -> std::string override
-	{
-		std::stringstream ss;
-		ss << "KeyPressed: " << m_key;
-		return ss.str();
-	}
-
-	[[nodiscard]] auto get_event_type() const -> EventType override
-	{
-		return ::lt::EventType::KeyPressed;
-	}
-
-	[[nodiscard]] auto has_category(EventCategory category) const -> bool override
-	{
-		return static_cast<uint8_t>(InputEventCategory | KeyboardEventCategory) & category;
-	}
-
-private:
-	const int m_key;
-};
-
-class KeyRepeatEvent: public Event
-{
-public:
-	KeyRepeatEvent(int key): m_key(key)
-	{
-	}
-
-	[[nodiscard]] auto get_key() const -> int
-	{
-		return m_key;
-	}
-
-	[[nodiscard]] auto get_info_lt_log() const -> std::string override
-	{
-		std::stringstream ss;
-		ss << "KeyRepeated: " << m_key;
-		return ss.str();
-	}
-
-	[[nodiscard]] auto get_event_type() const -> EventType override
-	{
-		return ::lt::EventType::KeyRepeated;
-	}
-
-	[[nodiscard]] auto has_category(EventCategory category) const -> bool override
-	{
-		return static_cast<uint8_t>(InputEventCategory | KeyboardEventCategory) & category;
-	}
-
-private:
-	const int m_key;
-};
-
-class KeyReleasedEvent: public Event
-{
-public:
-	KeyReleasedEvent(int key): m_key(key)
-	{
-	}
-
-	[[nodiscard]] auto get_key() const -> int
-	{
-		return m_key;
-	}
-
-	[[nodiscard]] auto get_info_lt_log() const -> std::string override
-	{
-		std::stringstream ss;
-		ss << "KeyReleased: " << m_key;
-		return ss.str();
-	}
-
-	[[nodiscard]] auto get_event_type() const -> EventType override
-	{
-		return ::lt::EventType::KeyReleased;
-	}
-
-	[[nodiscard]] auto has_category(EventCategory category) const -> bool override
-	{
-		return static_cast<uint8_t>(InputEventCategory | KeyboardEventCategory) & category;
-	}
-
-private:
-	const int m_key;
-};
-
-} // namespace lt

modules/input/include/input/events/mouse.hpp

@@ -1,151 +0,0 @@
-#pragma once
-
-#include <glm/glm.hpp>
-#include <input/events/event.hpp>
-#include <sstream>
-
-namespace lt {
-
-class MouseMovedEvent: public Event
-{
-public:
-	MouseMovedEvent(float x, float y): m_position(x, y)
-	{
-	}
-
-	[[nodiscard]] auto get_position() const -> const glm::vec2 &
-	{
-		return m_position;
-	}
-
-	[[nodiscard]] auto get_x() const -> float
-	{
-		return m_position.x;
-	}
-
-	[[nodiscard]] auto get_y() const -> float
-	{
-		return m_position.y;
-	}
-
-	[[nodiscard]] auto get_info_lt_log() const -> std::string override
-	{
-		std::stringstream ss;
-		ss << "MouseMoved: " << m_position.x << ", " << m_position.y;
-		return ss.str();
-	}
-
-	[[nodiscard]] auto get_event_type() const -> EventType override
-	{
-		return ::lt::EventType::MouseMoved;
-	}
-
-	[[nodiscard]] auto has_category(EventCategory category) const -> bool override
-	{
-		return static_cast<uint8_t>(InputEventCategory | MouseEventCategory) & category;
-	}
-
-private:
-	const glm::vec2 m_position;
-};
-
-class WheelScrolledEvent: public Event
-{
-public:
-	WheelScrolledEvent(float offset): m_offset(offset)
-	{
-	}
-
-	[[nodiscard]] auto get_offset() const -> float
-	{
-		return m_offset;
-	}
-
-	[[nodiscard]] auto get_info_lt_log() const -> std::string override
-	{
-		std::stringstream ss;
-		ss << "WheelScrolled: " << m_offset;
-		return ss.str();
-	}
-
-	[[nodiscard]] auto get_event_type() const -> EventType override
-	{
-		return ::lt::EventType::WheelScrolled;
-	}
-
-	[[nodiscard]] auto has_category(EventCategory category) const -> bool override
-	{
-		return static_cast<uint8_t>(InputEventCategory | MouseEventCategory) & category;
-	}
-
-private:
-	const float m_offset;
-};
-
-class ButtonPressedEvent: public Event
-{
-public:
-	ButtonPressedEvent(int button): m_button(button)
-	{
-	}
-
-	[[nodiscard]] auto get_button() const -> int
-	{
-		return m_button;
-	}
-
-	[[nodiscard]] auto get_info_lt_log() const -> std::string override
-	{
-		std::stringstream ss;
-		ss << "ButtonPressed: " << m_button;
-		return ss.str();
-	}
-
-	[[nodiscard]] auto get_event_type() const -> EventType override
-	{
-		return ::lt::EventType::ButtonPressed;
-	}
-
-	[[nodiscard]] auto has_category(EventCategory category) const -> bool override
-	{
-		return static_cast<uint8_t>(InputEventCategory | MouseEventCategory) & category;
-	}
-
-private:
-	const int m_button;
-};
-
-class ButtonReleasedEvent: public Event
-{
-public:
-	ButtonReleasedEvent(int button): m_button(button)
-	{
-	}
-
-	[[nodiscard]] auto get_button() const -> int
-	{
-		return m_button;
-	}
-
-	[[nodiscard]] auto get_info_lt_log() const -> std::string override
-	{
-		std::stringstream ss;
-		ss << "ButtonReleased: " << m_button;
-		return ss.str();
-	}
-
-	[[nodiscard]] auto get_event_type() const -> EventType override
-	{
-		return ::lt::EventType::ButtonReleased;
-	}
-
-	[[nodiscard]] auto has_category(EventCategory category) const -> bool override
-	{
-		return static_cast<uint8_t>(InputEventCategory | MouseEventCategory) & category;
-	}
-
-private:
-	const int m_button;
-};
-
-} // namespace lt

modules/input/include/input/events/window.hpp

@@ -1,133 +0,0 @@
-#pragma once
-
-#include <glm/glm.hpp>
-#include <input/events/event.hpp>
-#include <sstream>
-
-namespace lt {
-
-class WindowClosedEvent: public Event
-{
-public:
-	[[nodiscard]] auto get_info_lt_log() const -> std::string override
-	{
-		return "WindowClosedEvent";
-	}
-
-	[[nodiscard]] auto get_event_type() const -> EventType override
-	{
-		return ::lt::EventType::WindowClosed;
-	}
-
-	[[nodiscard]] auto has_category(EventCategory category) const -> bool override
-	{
-		return static_cast<uint8_t>(WindowEventCategory) & category;
-	}
-};
-
-class WindowMovedEvent: public Event
-{
-public:
-	WindowMovedEvent(int x, int y): m_position(x, y)
-	{
-	}
-
-	[[nodiscard]] auto get_position() const -> const glm::ivec2 &
-	{
-		return m_position;
-	}
-
-	[[nodiscard]] auto get_info_lt_log() const -> std::string override
-	{
-		std::stringstream ss;
-		ss << "WindwoMoved: " << m_position.x << ", " << m_position.y;
-		return ss.str();
-		;
-	}
-
-	[[nodiscard]] auto get_event_type() const -> EventType override
-	{
-		return ::lt::EventType::WindowMoved;
-	}
-
-	[[nodiscard]] auto has_category(EventCategory category) const -> bool override
-	{
-		return static_cast<uint8_t>(WindowEventCategory) & category;
-	}
-
-private:
-	const glm::ivec2 m_position;
-};
-
-class WindowResizedEvent: public Event
-{
-public:
-	WindowResizedEvent(unsigned int width, unsigned int height): m_size(width, height)
-	{
-	}
-
-	[[nodiscard]] auto get_size() const -> const glm::uvec2 &
-	{
-		return m_size;
-	}
-
-	[[nodiscard]] auto get_info_lt_log() const -> std::string override
-	{
-		std::stringstream ss;
-		ss << "WindowResized: " << m_size.x << ", " << m_size.y;
-		return ss.str();
-	}
-
-	[[nodiscard]] auto get_event_type() const -> EventType override
-	{
-		return ::lt::EventType::WindowResized;
-	}
-
-	[[nodiscard]] auto has_category(EventCategory category) const -> bool override
-	{
-		return static_cast<uint8_t>(WindowEventCategory) & category;
-	}
-
-private:
-	const glm::uvec2 m_size;
-};
-
-class WindowLostFocusEvent: public Event
-{
-public:
-	[[nodiscard]] auto get_info_lt_log() const -> std::string override
-	{
-		return "WindowLostFocus";
-	}
-
-	[[nodiscard]] auto get_event_type() const -> EventType override
-	{
-		return ::lt::EventType::WindowLostFocus;
-	}
-
-	[[nodiscard]] auto has_category(EventCategory category) const -> bool override
-	{
-		return static_cast<uint8_t>(WindowEventCategory) & category;
-	}
-};
-
-class WindowGainFocusEvent: public Event
-{
-public:
-	[[nodiscard]] auto get_info_lt_log() const -> std::string override
-	{
-		return "WindowGainFocus";
-	}
-
-	[[nodiscard]] auto get_event_type() const -> EventType override
-	{
-		return ::lt::EventType::WindowGainFocus;
-	}
-
-	[[nodiscard]] auto has_category(EventCategory category) const -> bool override
-	{
-		return static_cast<uint8_t>(WindowEventCategory) & category;
-	}
-};
-
-} // namespace lt

modules/input/private/input.cpp

@@ -1,10 +1,5 @@
 #include <imgui.h>
-#include <input/events/char.hpp>
-#include <input/events/event.hpp>
-#include <input/events/keyboard.hpp>
-#include <input/events/mouse.hpp>
 #include <input/input.hpp>
-#include <input/key_codes.hpp>
 #include <logger/logger.hpp>
 
 namespace lt {
@@ -36,8 +31,8 @@ void Input::restart_input_state()
 	m_keyboad_keys.fill(false);
 	m_mouse_buttons.fill(false);
 
-	m_mouse_position = glm::vec2(0.0f);
-	m_mouse_delta = glm::vec2(0.0f);
+	m_mouse_position = math::vec2(0.0f);
+	m_mouse_delta = math::vec2(0.0f);
 	m_mouse_wheel_delta = 0.0f;
 }
 

modules/input/private/system.cpp

@@ -0,0 +1,5 @@
+#include <input/system.hpp>
+
+namespace lt::input {
+
+} // namespace lt::input

modules/input/public/input.hpp

@@ -1,7 +1,7 @@
 #pragma once
 
 #include <array>
-#include <glm/glm.hpp>
+#include <math/vec2.hpp>
 
 namespace lt {
 
@@ -36,7 +36,7 @@ public:
 		return instance().m_mouse_buttons[code];
 	}
 
-	static auto get_mouse_position(int /*code*/) -> const glm::vec2 &
+	static auto get_mouse_position(int /*code*/) -> const math::vec2 &
 	{
 		return instance().m_mouse_position;
 	}
@@ -66,9 +66,9 @@ private:
 
 	std::array<bool, 8> m_mouse_buttons {};
 
-	glm::vec2 m_mouse_position;
+	math::vec2 m_mouse_position;
 
-	glm::vec2 m_mouse_delta;
+	math::vec2 m_mouse_delta;
 
 	float m_mouse_wheel_delta {};
 

modules/input/public/system.hpp

@@ -0,0 +1,64 @@
+#pragma once
+
+#include <surface/system.hpp>
+
+namespace lt::input {
+
+template<class... Ts>
+struct overloads: Ts...
+{
+	using Ts::operator()...;
+};
+
+/**
+ *
+ * @note If this system is attached, it will always consume the input events f rom surface.
+ * Therefore if you want any input detection mechanism, callbacks should be setup with this
+ * system and not directly with surface.
+ */
+class System
+{
+public:
+	System(lt::surface::System &surface_system)
+	{
+		surface_system.add_event_listener([this](auto &&event) {
+			return handle_event(std::forward<decltype(event)>(event));
+		});
+	};
+
+private:
+	auto handle_event(const lt::surface::System::Event &event) -> bool
+	{
+		const auto visitor = overloads {
+			[this](const lt::surface::KeyPressedEvent &event) {
+			    m_keys[event.get_key()] = true;
+			    return true;
+			},
+
+			[](const lt::surface::KeyRepeatEvent &) { return false; },
+
+			[](const lt::surface::KeyReleasedEvent &) { return false; },
+
+			[](const lt::surface::KeySetCharEvent &) { return false; },
+
+			[](const lt::surface::MouseMovedEvent &) { return false; },
+
+			[](const lt::surface::WheelScrolledEvent &) { return false; },
+
+			[](const lt::surface::ButtonPressedEvent &) { return false; },
+
+			[](const lt::surface::ButtonReleasedEvent &) { return false; },
+
+			[](const auto &) { return false; },
+		};
+
+		return std::visit(visitor, event);
+	}
+
+	void setup_callbacks(GLFWwindow *handle);
+
+	std::array<bool, 512> m_keys {};
+};
+
+
+} // namespace lt::input

modules/logger/CMakeLists.txt

@@ -1,2 +1 @@
 add_library_module(logger logger.cpp)
-target_link_libraries(logger PUBLIC spdlog::spdlog)

modules/logger/private/logger.cpp

@@ -0,0 +1 @@
+#include <logger/logger.hpp>

modules/logger/public/logger.hpp

@@ -1,15 +1,9 @@
 #pragma once
 
 #include <format>
-#include <memory>
-#include <spdlog/sinks/basic_file_sink.h>
-#include <spdlog/sinks/stdout_color_sinks.h>
-#include <spdlog/spdlog.h>
+#include <print>
 
-/** @brief Severity of a log message.
- *
- * @note Values reflect spdlog::lvl
- */
+/** Severity of a log message. */
 enum class LogLvl : uint8_t
 {
 	/** Lowest and most vebose log level, for tracing execution paths and events */
@@ -34,11 +28,7 @@ enum class LogLvl : uint8_t
 	off = 6,
 };
 
-namespace spdlog {
-class logger;
-}
-
-/** Responsible for logging */
+/** Simple console logger */
 class Logger
 {
 public:
@@ -47,26 +37,19 @@ public:
 	template<typename... Args>
 	void static log(LogLvl lvl, std::format_string<Args...> fmt, Args &&...args)
 	{
-		instance().spd_logger->log(
-		    (spdlog::level::level_enum)lvl,
-		    std::format(fmt, std::forward<Args>(args)...)
-		);
+		std::ignore = lvl;
+		std::println(fmt, std::forward<Args>(args)...);
 	}
 
 	void static log(LogLvl lvl, const char *message)
 	{
-		instance().spd_logger->log((spdlog::level::level_enum)lvl, message);
+		std::ignore = lvl;
+		std::println("{}", message);
 	}
 
 
 private:
-	Logger();
-
-	~Logger();
-
-	auto static instance() -> Logger &;
-
-	std::shared_ptr<spdlog::logger> spd_logger;
+	Logger() = default;
 };
 
 template<typename... Args>

modules/logger/src/logger.cpp

@@ -1,18 +0,0 @@
-#include <logger/logger.hpp>
-
-Logger::Logger(): spd_logger(spdlog::stdout_color_mt("Logger"))
-{
-	spd_logger->set_pattern("%^%v%$");
-	spd_logger->set_level(spdlog::level::level_enum::trace);
-}
-
-Logger::~Logger()
-{
-	spdlog::drop_all();
-}
-
-auto Logger::instance() -> Logger &
-{
-	static auto logger = Logger {};
-	return logger;
-}

modules/math/CMakeLists.txt

@@ -0,0 +1 @@
+add_library_module(math)