feature: UI (#31)

* refactor(ui): replace Text with Label/Widget component system

Replace the old `Text` class with a new component-based UI system consisting of `Widget` and `Label` classes. Key changes:

- Remove `Text` class and its GPU upload logic; introduce `Label` as a `Widget` subclass with dirty-flag vertex update.
- Add `UIVertexData` struct to manage per-label vertex buffer/array and memory.
- Refactor `DebugCollector` to store labels in a `Widget` tree, removing hash-based lookup.
- Simplify `Font::vertices()` signature by removing position/scale parameters; scaling is now applied in the renderer’s model matrix.
- Update `Renderer` with `render_label()` and move UI rendering to a `render_ui()` that renders the widget tree.
- Add new source files `label.cpp`, `widget.cpp`, `ui_vertex_data.cpp` and update CMakeLists.

* refactor(render): replace UI shaders with image shaders and Image widget

* refactor(core): add event system and scene management

- Introduce Event variant and Overloaded helper for input handling
- Move game state (camera, client_world, dev_panel) from App to WorldScene
- Add SceneManager with push/pop/change operations for scene stack
- Refactor input callbacks to dispatch events through scene hierarchy
- Extract Argument struct to separate header
- Update Renderer and WorldRenderer to accept world reference
- Replace global input state with event-driven processing in ClientPlayer, Camera, etc.

* refactor: add framebuffer resize event and separate UI management

* fix(font): use correct texture format and clamp to edge for font atlas

* feat(input): add KeyAction::REPEAT for key repeat events

Add a new REPEAT value to the KeyAction enum and update the input callbacks to map GLFW_REPEAT actions to the new value instead of treating them as press.

* feat(client-player): add block cooldown and track mouse state

Introduce a time-based cooldown for block placement (PLACE_BLOCK_INTERVAL) to prevent rapid clicking. Replace the global InputState with per-player MouseState tracking in ClientPlayer. Rename place_block() to get_current_block() for clarity. Remove the old src/input.cpp and the Cubed/input.hpp header, moving input structures to Cubed/input/input.hpp.

* ui: add main menu scene and interactive button widget

- Implement MainMenuScene with a "Start Game" button that pushes the WorldScene.
- Extend Button class with background/foreground, hover detection, and size queries.
- Add virtual width/height and event handlers to Widget base class.
- Update WorldUIManager to propagate mouse move events.
- Adjust Window mouse mode based on game running state.

* feat(ui): add button scaling and change square vertices to top-left origin

* refactor(font): return TextMesh from Font::vertices to include bounding box

Replace the plain vertex vector with a TextMesh struct that carries width, height, and min coordinates. Update Label to compute and store these values immediately on text change (removing lazy dirty update). Fix Button's width/height to factor in scale and use concrete widget types for background and foreground.

* feat(ui): support scaling of labels and images

Modify width() and height() methods to multiply by m_scale for both Label and Image. Rename internal dimensions to m_real_width and m_real_height for clarity. Adjust Button foreground position to vertically center when label is scaled.

* refactor(ui): move scale property to subclasses and fix resize event handling

Remove scale from base Widget class and add per-type set_scale/scale methods to Button, Image, and Label. Dispatch separate WindowResizeEvent alongside existing FrameBufferResizeEvent. Correct centering calculations from `+` to `-` in main menu and world UI managers.

* fix(render): remove duplicate scaling in render_image model matrix

* feat(ui): introduce anchor-based widget positioning system

Replace set_position with anchor and offset for relative positioning. Add parent pointer to widget hierarchy. Remove manual resize logic in UI managers.

* feat(ui): introduce ColumnLayout widget and refactor widget parenting

- Add ColumnLayout widget that arranges children vertically with spacing.
- Refactor Widget::add_child to automatically pass `this` as parent.
- Update DebugCollector to use ColumnLayout for consistent spacing.
- Expose children() accessor in Widget for layout management.

* feat(main_menu): add exit button and refactor layout with ColumnLayout

- Add `should_close_window()` method to force window close from UI.
- Replace standalone button with ColumnLayout for proper centering.
- Add "Exit" button that calls `should_close_window()`.
- Update ESC key handling to only close window when game is not running.
- Fix ColumnLayout to respect parent's anchor instead of hardcoded TOP_LEFT.
- Remove unused parameter name in Image::update for consistency.

* feat(ui): add Rect widget with fill, color, and parent-relative sizing

* refactor(ui): extract common UI manager logic into base class

* refactor: move server logic to WorldScene and refactor UI methods

* feat(scene): implement pause menu with UI manager and escape key toggling

Add PauseMenuUIManager class and integrate pause state into WorldScene.
Escape key toggles pause in ClientPlayer and PauseMenuUIManager.
Refactor Window mouse and imgui control to support pause state.

* refactor(scene): dispatch events via typed handlers and move pause toggle to WorldScene

* feat(ui): add HUD visibility toggle and image fill features

* refactor(app): remove redundant ImGui WantCaptureMouse check in cursor callback

* feat(scene): add credits scene and UI

* feat(credits): add ESC key handling; remove about tab from dev panel

* feat(ui): add Slider widget for value selection

* refactor(ui/slider): improve track/thumb initialization and validation

Rename track/thumb accessors from set_track/set_thumb to get_track/get_thumb.
Add private init methods and a constant THUMB_WIDTH.
Add validation to set_width with log and assert.
Modify set_height to assume non-null m_thumb.

* refactor(ui): simplify Button API with property setters

* feat(ui): add label and image support to slider

- Add `set_text()`, `set_track_image()`, `set_thumb_image()` methods.
- Include label rendering and auto-scaling based on slider dimensions.
- Replace static `THUMB_WIDTH` with dynamic thumb sizing.
- Add slider thumb and track texture assets.

* feat(ui): add int slider support and fix update_text_scale calls

* refactor(config): rename hot_reload to reload_config and add settings scene

* feat(ui): add auto-scaling option for button and slider text

* feat(ui): add button enable/disable and reset on re-enter

Prevent double-clicking on buttons that push new scenes by disabling them on click and re-enabling when the UI manager's on_re_enter is called.

* fix(input): reset key status on pause

* feat(ui): add ComboButton widget and integrate into settings

Introduce ComboButton, a button that cycles through options on click.
Used in SettingsUI for fullscreen, V-Sync, and anisotropic filtering.
Adds texture reload support in SettingsScene and makes Button methods
virtual to allow overriding. Also fixes default mouse_enable to true.

* feat(ui): add child anchor and content sizing to column layout

* feat(ui): add TextField widget with UTF-8 text input support

* feat(scene): add host game scene and world parameter handling

* feat(scene): add join game scene and UI

* feat(ui): add clipboard paste to TextField

* feat(ui): add blinking cursor to text field

* feat(ui): add error UI for connection failures and network errors

Introduce ErrorUI to display error messages in-world when the client encounters connection failures or network errors. The network client now stores error strings thread-safely and exposes them via `get_error_string()`. The world scene suspends normal update/render when an error is active and shows the error overlay, allowing the user to return to the previous scene. Additionally, the client world checks for connection errors during exit to avoid hanging, and the join game UI is fixed to correctly default to client mode.

* refactor: move connect error check to WorldScene and add UI titles

* feat(ui): add error display in host and join game screens

* feat(ui): add configurable child traversal order for event handling

Add TraversalOrder enum to Widget, allowing event handlers to iterate children in back-to-front (default) or front-to-back order.
Set ColumnLayout to front-to-back order.
Change TextField mouse button handler to return false, enabling event propagation.

* fix: window build fail

* style(ui): remove extra blank line

.github/workflows/format-check.yml

@@ -1,4 +1,3 @@
-# .github/workflows/format-check.yml
 name: Code Format Check
 
 on: [push, pull_request]
@@ -9,9 +8,22 @@ permissions:
 jobs:
   formatting:
     runs-on: ubuntu-latest
-    container: silkeh/clang:latest   
+
     steps:
       - uses: actions/checkout@v4
+
+      - name: Install LLVM 22
+        run: |
+          wget https://apt.llvm.org/llvm.sh
+          chmod +x llvm.sh
+          sudo ./llvm.sh 22
+
+          sudo apt-get install -y clang-format-22
+
+          clang-format-22 --version
+
       - name: Run clang-format
         run: |
-          find src include -name '*.cpp' -o -name '*.h' -print0 | xargs -0 clang-format --dry-run --Werror
+          find src include \
+            \( -name '*.cpp' -o -name '*.hpp' \) \
+            -print0 | xargs -0 clang-format-22 --dry-run --Werror

.github/workflows/release-build.yml

@@ -0,0 +1,154 @@
+name: Release-Build
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: Version
+        required: false
+        default: dev
+
+  push:
+    tags:
+      - "v*"
+
+permissions:
+  contents: write
+
+jobs:
+
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: windows-2022
+            platform: windows
+            
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+
+      - uses: actions/checkout@v4
+
+
+      - name: Get Version
+        id: version
+        shell: bash
+        run: |
+          if [[ "${GITHUB_REF}" == refs/tags/* ]]; then
+            VERSION="${GITHUB_REF_NAME#v}"
+          else
+            VERSION="${{ github.event.inputs.version }}"
+          fi
+
+          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
+
+      - name: Setup MSVC
+        if: matrix.platform == 'windows'
+        uses: ilammy/msvc-dev-cmd@v1
+
+      - name: Bootstrap vcpkg
+        run: |
+          git clone https://github.com/microsoft/vcpkg.git
+          ./vcpkg/bootstrap-vcpkg.bat
+
+      - name: Configure
+        if: matrix.platform == 'windows'
+        run: >
+          cmake
+          -B build
+          -G Ninja
+          -DCMAKE_BUILD_TYPE=Release
+          -DCMAKE_TOOLCHAIN_FILE=${{ github.workspace }}/vcpkg/scripts/buildsystems/vcpkg.cmake
+          -DVCPKG_TARGET_TRIPLET=x64-windows-release
+          -DVCPKG_BUILD_TYPE=release
+          -DBUILD_TESTING=OFF
+          "-DCUBED_VERSION=${{ steps.version.outputs.version }}"
+
+      - name: Build
+        run: cmake --build build --config Release --target Cubed
+
+      - name: Copy assets
+        if: matrix.platform == 'windows'
+        shell: pwsh
+        run: |
+          if (Test-Path assets) {
+            Copy-Item -Path assets -Destination build/Cubed -Recurse
+          } else {
+            Write-Warning "assets folder not found, skipping copy"
+          }
+
+      - name: Create Zip
+        if: matrix.platform == 'windows'
+        shell: pwsh
+        run: |
+          Compress-Archive `
+            -Path build/Cubed/* `
+            -DestinationPath Cubed-${{ steps.version.outputs.version }}-windows-x64.zip
+      
+      ####################################################################
+      # Upload
+      ####################################################################
+
+      - name: Upload Windows Artifacts
+        if: matrix.platform == 'windows'
+        uses: actions/upload-artifact@v4
+        with:
+          name: windows
+          path: |
+            *.zip
+
+  ##########################################################################
+  # Release
+  ##########################################################################
+
+  release:
+
+    needs: build
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 1   
+
+      - name: Download Artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: artifacts
+
+      - name: Generate SHA256
+        run: |
+          cd artifacts
+
+          find . -type f | while read file
+          do
+            sha256sum "$file"
+          done > SHA256SUMS
+          
+      - name: Determine prerelease
+        id: prerelease
+        run: |
+          MAIN_BRANCH="${{ github.event.repository.default_branch }}"
+          git fetch origin "$MAIN_BRANCH" --depth=1 2>/dev/null || true
+
+          if git merge-base --is-ancestor "${{ github.sha }}" "origin/$MAIN_BRANCH"; then
+            echo "is_prerelease=false" >> $GITHUB_OUTPUT
+            echo "is_prerelease=false"
+          else
+            echo "is_prerelease=true" >> $GITHUB_OUTPUT
+            echo "is_prerelease=true"
+          fi
+
+      - name: Release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: |
+            artifacts/**/*
+            artifacts/SHA256SUMS
+          generate_release_notes: true
+          draft: false
+          prerelease: ${{ steps.prerelease.outputs.is_prerelease }}

.gitignore

@@ -41,4 +41,7 @@ CMakeError.log
 *~
 .DS_Store
 assets/config.toml
-.venv/
+assets/server-config.toml
+.venv/
+pyout/
+vcpkg_installed/

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.14...3.24)
+cmake_minimum_required(VERSION 3.21)
 project(Cubed LANGUAGES C CXX)
 
 set(CMAKE_CXX_STANDARD 23)
@@ -6,167 +6,120 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
-if(NOT CMAKE_BUILD_TYPE)
-    set(CMAKE_BUILD_TYPE Debug)
+if(NOT CMAKE_CONFIGURATION_TYPES
+   AND NOT CMAKE_BUILD_TYPE)
+
+    set(CMAKE_BUILD_TYPE Debug CACHE STRING "" FORCE)
+
+endif()
+
+if(NOT DEFINED CUBED_VERSION)
+    set(CUBED_VERSION "dev")
 endif()
 
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${PROJECT_NAME})
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${PROJECT_NAME})
 set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 
-if(MSVC)
-    add_compile_options(/utf-8)
-endif()
-
-find_package(OpenGL REQUIRED)
-
-if (UNIX AND NOT APPLE)
-    find_package(Freetype REQUIRED)
-    find_package(PkgConfig REQUIRED)
-    pkg_check_modules(EGL REQUIRED egl)
-    pkg_check_modules(Wayland REQUIRED wayland-client wayland-egl)
-    find_package(glfw3 REQUIRED)   
-endif()
-
-add_library(glad STATIC third_party/glad/src/glad.c)
-target_include_directories(glad PUBLIC third_party/glad/include)
-
-include(FetchContent)
-
-if (WIN32)
-    FetchContent_Declare(
-        glfw
-        GIT_REPOSITORY https://github.com/glfw/glfw.git
-        GIT_TAG 3.4  
-    )
-
-    set(GLFW_BUILD_DOCS OFF CACHE BOOL "" FORCE)
-    set(GLFW_BUILD_TESTS OFF CACHE BOOL "" FORCE)
-    set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
-    set(GLFW_INSTALL OFF CACHE BOOL "" FORCE)         
-    set(GLFW_VULKAN_STATIC ON CACHE BOOL "" FORCE)     
-    set(GLFW_STATIC ON CACHE BOOL "" FORCE)          
-
-    FetchContent_MakeAvailable(glfw)
-
-    FetchContent_Declare(
-        freetype
-        GIT_REPOSITORY https://gitlab.freedesktop.org/freetype/freetype.git
-        GIT_TAG VER-2-14-3
-    )
-    FetchContent_MakeAvailable(freetype)
-    if(TARGET freetype)
-    add_library(Freetype::Freetype ALIAS freetype)
-    endif()
-    set(_BUILD_SHARED_LIBS_SAVED ${BUILD_SHARED_LIBS})
-    set(BUILD_SHARED_LIBS ON)
-
-    FetchContent_Declare(
-    onetbb                           
-    GIT_REPOSITORY https://github.com/uxlfoundation/oneTBB.git
-    GIT_TAG v2023.0.0
-    )
-    set(BUILD_TESTING OFF CACHE BOOL "Build tests" FORCE)
-    set(TBB_TEST OFF CACHE BOOL "Build TBB tests" FORCE)
-    FetchContent_MakeAvailable(onetbb)
-
-    set(BUILD_SHARED_LIBS ${_BUILD_SHARED_LIBS_SAVED})
-    unset(_BUILD_SHARED_LIBS_SAVED)
-
-endif()
-
-FetchContent_Declare(
-    glm
-    GIT_REPOSITORY https://github.com/g-truc/glm.git
-    GIT_TAG 1.0.3 
-    
+list(APPEND CMAKE_MODULE_PATH 
+    "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
+    "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules"
 )
-FetchContent_MakeAvailable(glm)
-FetchContent_Declare(
-    soil2
-    GIT_REPOSITORY https://github.com/SpartanJ/SOIL2.git
-    GIT_TAG 1.31  
-    
-)
-FetchContent_MakeAvailable(soil2)
-FetchContent_Declare(
-    tomlplusplus
-    GIT_REPOSITORY https://github.com/marzer/tomlplusplus.git
-    GIT_TAG v3.4.0
-)
-FetchContent_MakeAvailable(tomlplusplus)
+
+include(Dependencies)
+
+add_subdirectory(third_party/glad)
 
 add_subdirectory(third_party/imgui)
 
-set(INCLUDE_DIR ${PROJECT_SOURCE_DIR}/include)
+add_subdirectory(third_party/dr_libs)
 
-add_executable(${PROJECT_NAME}
-    src/main.cpp
-    src/app.cpp
-    src/debug_collector.cpp
-    src/camera.cpp
-    src/config.cpp
-    src/dev_panel.cpp
-    src/gameplay/biome.cpp
-    src/gameplay/chunk.cpp
-    src/gameplay/chunk_generator.cpp
-    src/gameplay/player.cpp
-    src/gameplay/tree.cpp
-    src/gameplay/world.cpp
-    src/input.cpp
-    src/map_table.cpp
-    src/renderer.cpp
-    src/shader.cpp
-    src/texture_manager.cpp
-    src/tools/cubed_random.cpp
-    src/tools/math_tools.cpp
-    src/tools/shader_tools.cpp
-    src/tools/font.cpp
-    src/tools/perlin_noise.cpp
-    src/ui/text.cpp
-    src/window.cpp
-    src/gameplay/builders/biome_builder.cpp
-    src/gameplay/builders/plain_builder.cpp
-    src/gameplay/builders/mountain_builder.cpp
-    src/gameplay/builders/river_builder.cpp
-    src/gameplay/builders/desert_builder.cpp
-    src/gameplay/builders/forest_builder.cpp
-    src/gameplay/cave_carver.cpp
-    src/gameplay/cave_path.cpp
-    src/gameplay/builders/snowy_plain_builder.cpp
-    src/gameplay/river_worm.cpp
-    src/gameplay/river_path.cpp
-    src/block.cpp
-    src/gameplay/vertex_data.cpp
-    src/gameplay/builders/ocean_builder.cpp
+add_executable(${PROJECT_NAME})
+
+add_subdirectory(src)
+
+file(GLOB_RECURSE PROTO_FILES
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/proto/*.proto
 )
 
-if(CMAKE_BUILD_TYPE STREQUAL "Debug")
-    message(STATUS "Building with AddressSanitizer enabled for target: ${PROJECT_NAME}")
+protobuf_generate(
+    TARGET ${PROJECT_NAME}           
+    LANGUAGE cpp         
+    PROTOS ${PROTO_FILES}
+    IMPORT_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/src/proto
+)
 
-    target_compile_options(${PROJECT_NAME} PRIVATE
-        #-fsanitize=address
-        #-fsanitize=thread
-        -fno-omit-frame-pointer   
-        -g                        
-    )
+configure_file(
+    src/version.hpp.in
+    ${CMAKE_BINARY_DIR}/generated/version.hpp
+    @ONLY
+)
 
-    target_link_options(${PROJECT_NAME} PRIVATE
-        #-fsanitize=address
-        #-fsanitize=thread
-    )
+target_compile_options(${PROJECT_NAME}
+    PRIVATE
+        $<$<CONFIG:Debug>:-fno-omit-frame-pointer>
+        $<$<CONFIG:Debug>:-g>
+        #$<$<CONFIG:Debug>:-fsanitize=address>
+        #$<$<CONFIG:Debug>:-fsanitize=thread>
 
-    target_compile_definitions(${PROJECT_NAME} PRIVATE DEBUG_MODE)
-    target_compile_definitions(${PROJECT_NAME} PRIVATE 
-        ASSETS_PATH="${CMAKE_SOURCE_DIR}/assets/"
+        $<$<CXX_COMPILER_ID:GNU,Clang>:-Wall>
+        $<$<CXX_COMPILER_ID:GNU,Clang>:-Wextra>
+        $<$<CXX_COMPILER_ID:GNU,Clang>:-Wpedantic>
+
+        $<$<CXX_COMPILER_ID:MSVC>:/utf-8>
+        $<$<CXX_COMPILER_ID:MSVC>:/W4>
+)
+
+target_link_options(${PROJECT_NAME}
+    PRIVATE
+        #$<$<CONFIG:Debug>:-fsanitize=address>
+        #$<$<CONFIG:Debug>:-fsanitize=thread>
+)
+
+target_compile_definitions(${PROJECT_NAME}
+    PRIVATE
+        ASIO_STANDALONE
+        ASIO_NO_DEPRECATED
+        $<$<CONFIG:Debug>:DEBUG_MODE>
+        $<$<CXX_COMPILER_ID:MSVC>:
+            WIN32_LEAN_AND_MEAN
+            NOMINMAX
+            _CRT_SECURE_NO_WARNINGS
+        >
+)
+
+if(CMAKE_CONFIGURATION_TYPES)
+    # Visual Studio / Xcode multi-configuration generator
+    target_compile_definitions(${PROJECT_NAME}
+        PRIVATE
+            ASSETS_PATH="$<$<CONFIG:Debug>:${PROJECT_SOURCE_DIR}/assets/>$<$<NOT:$<CONFIG:Debug>>:./assets/>"
     )
 else()
-    target_compile_definitions(${PROJECT_NAME} PRIVATE 
-        ASSETS_PATH="./assets/"
-    )
+    # Ninja / Makefiles single-configuration generator
+    if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+        target_compile_definitions(${PROJECT_NAME}
+            PRIVATE
+                ASSETS_PATH="${PROJECT_SOURCE_DIR}/assets/"
+        )
+    else()
+        target_compile_definitions(${PROJECT_NAME}
+            PRIVATE
+                ASSETS_PATH="./assets/"
+        )
+    endif()
 endif()
 
-target_include_directories(${PROJECT_NAME} PUBLIC ${INCLUDE_DIR})
+
+target_include_directories(${PROJECT_NAME}
+    PRIVATE
+        ${PROJECT_SOURCE_DIR}/include
+        ${PROJECT_SOURCE_DIR}/third_party/asio/include
+        ${CMAKE_BINARY_DIR}/generated
+        ${PROJECT_BINARY_DIR}
+        ${PROJECT_BINARY_DIR}/src
+
+)
+
 
 target_link_libraries(${PROJECT_NAME}
     PRIVATE
@@ -178,43 +131,27 @@ target_link_libraries(${PROJECT_NAME}
         Freetype::Freetype
         tomlplusplus::tomlplusplus
         imgui
+        dr_libs
         tbb
+        protobuf::libprotobuf
+        absl::log
+        absl::check
+        absl::base
+        absl::strings
+        absl::flat_hash_map
+        zstd::zstd
+        OpenAL::OpenAL
+        $<$<PLATFORM_ID:Windows>:ws2_32>
+
 )
 
-if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
-#    target_link_libraries(${PROJECT_NAME} PRIVATE tbb)
-endif()
-
-if (UNIX AND NOT APPLE)
-    target_link_libraries(${PROJECT_NAME}
-        PRIVATE
-            ${EGL_LIBRARIES}
-            ${Wayland_LIBRARIES}
+if(WIN32)
+    add_custom_command(
+        TARGET ${PROJECT_NAME}
+        POST_BUILD
+        COMMAND ${CMAKE_COMMAND} -E copy_if_different
+            $<TARGET_RUNTIME_DLLS:${PROJECT_NAME}>
+            $<TARGET_FILE_DIR:${PROJECT_NAME}>
+        COMMAND_EXPAND_LISTS
     )
-
-
-    target_include_directories(${PROJECT_NAME}
-        PRIVATE
-            ${EGL_INCLUDE_DIRS}
-            ${Wayland_INCLUDE_DIRS}
-    )
-
-
-    target_compile_options(${PROJECT_NAME} PRIVATE ${EGL_CFLAGS_OTHER} ${Wayland_CFLAGS_OTHER})
-endif()
-
-if (WIN32)
-    foreach(TBB_LIB IN ITEMS tbb tbbmalloc tbbmalloc_proxy)
-        if(TARGET ${TBB_LIB})
-            add_custom_command(
-                TARGET ${PROJECT_NAME} POST_BUILD
-                COMMAND ${CMAKE_COMMAND} -E copy_if_different
-                    $<TARGET_FILE:${TBB_LIB}>
-                    $<TARGET_FILE_DIR:${PROJECT_NAME}>
-                COMMENT "Copying ${TBB_LIB}.dll"
-            )
-        else()
-            message(STATUS "Target ${TBB_LIB} not found, skipping copy")
-        endif()
-    endforeach()
 endif()

assets/data/block/air.toml

@@ -7,4 +7,5 @@ is_liquid = false
 is_passable = true
 is_transitional = false
 is_transparent = true
-name = 'air'
+name = 'air'
+roughness = 1.0

assets/data/block/dirt.toml

@@ -7,4 +7,5 @@ is_liquid = false
 is_passable = false
 is_transitional = true
 is_transparent = false
-name = 'dirt'
+name = 'dirt'
+roughness = 1.0

assets/data/block/grass.toml

@@ -7,4 +7,5 @@ is_liquid = false
 is_passable = true
 is_transitional = false
 is_transparent = true
-name = 'grass'
+name = 'grass'
+roughness = 0.9

assets/data/block/grass_block.toml

@@ -7,4 +7,5 @@ is_liquid = false
 is_passable = false
 is_transitional = true
 is_transparent = false
-name = 'grass_block'
+name = 'grass_block'
+roughness = 0.9

assets/data/block/leaf.toml

@@ -7,4 +7,5 @@ is_liquid = false
 is_passable = false
 is_transitional = false
 is_transparent = true
-name = 'leaf'
+name = 'leaf'
+roughness = 0.7

assets/data/block/log.toml

@@ -7,4 +7,5 @@ is_liquid = false
 is_passable = false
 is_transitional = false
 is_transparent = false
-name = 'log'
+name = 'log'
+roughness = 0.7

assets/data/block/sand.toml

@@ -7,4 +7,5 @@ is_liquid = false
 is_passable = false
 is_transitional = true
 is_transparent = false
-name = 'sand'
+name = 'sand'
+roughness = 0.8

assets/data/block/snowy_grass_block.toml

@@ -7,4 +7,5 @@ is_liquid = false
 is_passable = false
 is_transitional = true
 is_transparent = false
-name = 'snowy_grass_block'
+name = 'snowy_grass_block'
+roughness = 0.9

assets/data/block/stone.toml

@@ -7,4 +7,5 @@ is_liquid = false
 is_passable = false
 is_transitional = true
 is_transparent = false
-name = 'stone'
+name = 'stone'
+roughness = 0.75

assets/data/block/template.toml

@@ -8,3 +8,4 @@ is_transparent = false
 is_discard = false
 is_blend = false
 is_transitional = false
+roughness = 1.0

assets/data/block/water.toml

@@ -7,4 +7,5 @@ is_liquid = true
 is_passable = true
 is_transitional = false
 is_transparent = true
-name = 'water'
+name = 'water'
+roughness = 0.02

assets/shaders/billboard_f_shader.glsl

@@ -0,0 +1,11 @@
+#version 460
+
+out vec4 frag_color;
+
+uniform vec3 color;
+
+void main(void) {
+    
+    frag_color = vec4(color, 1.0);
+
+}

assets/shaders/billboard_v_shader.glsl

@@ -0,0 +1,10 @@
+#version 460
+
+layout (location = 0) in vec3 vertices_pos;
+
+uniform mat4 mv_matrix;
+uniform mat4 proj_matrix;
+
+void main(void) {
+    gl_Position = proj_matrix * mv_matrix * vec4(vertices_pos, 1.0);
+}

assets/shaders/block_accumulation_f_shader.glsl

@@ -4,10 +4,21 @@ layout (location = 0) out vec4 accum;
 layout (location = 1) out float reveal;
 
 in vec2 tc;
+in vec3 normal;
+in vec3 vert_pos;
+in float roughness;
 flat in int tex_layer;
 in float v_depth;
 layout (binding = 0) uniform sampler2DArray samp;
 
+uniform float ambientStrength;
+uniform vec3 sunlightColor;
+uniform vec3 ambientColor;
+uniform vec3 sunlightDir;
+uniform vec3 cameraPos;
+uniform bool shader_on;
+uniform float specularStrength;
+
 float weight(float z, float a) {
     float intermediate = 0.03 / (1e-5 + pow(z / 200.0, 4.0));
     
@@ -15,7 +26,71 @@ float weight(float z, float a) {
 }
 
 void main() {
-    vec4 color = texture(samp, vec3(tc, tex_layer));
+
+    vec4 objectColor = texture(samp, vec3(tc, tex_layer));
+
+    if (!shader_on) {
+        vec4 color = objectColor;
+        float alpha = color.a;
+        if (alpha < 1e-4) discard;
+
+
+        float w = weight(v_depth, alpha);
+
+        accum = vec4(color.rgb * alpha * w, alpha * w);
+
+        reveal = alpha;
+        return;
+    }
+   
+    vec3 lightDir = normalize(-sunlightDir);
+    
+    vec3 norm = normalize(normal);
+
+    vec3 V =
+        normalize(cameraPos - vert_pos);
+
+    vec3 H = 
+        normalize(lightDir + V);
+
+    vec3 ambient = ambientStrength * ambientColor;
+    
+    float diff = max(dot(norm, lightDir), 0.0);
+    
+    vec3 diffuse = diff * sunlightColor;
+    
+    float r =
+        clamp(roughness, 0.0, 1.0);
+
+    float shininess =
+        mix(
+            512.0,
+            4.0,
+            r
+        );
+    float ks =
+        mix(
+            0.8,
+            0.02,
+            r
+        );
+
+    float spec = 0.0;
+
+    if(diff > 0.0)
+    {
+        spec =
+            ks *
+            pow(
+                max(dot(norm,H),0.0),
+                shininess
+            );
+    }
+    
+    vec3 specular = spec * sunlightColor * specularStrength;
+  
+    vec4 color = vec4((ambient + diffuse) * objectColor.rgb + specular, objectColor.a);
+
     float alpha = color.a;
     if (alpha < 1e-4) discard;
 

assets/shaders/block_accumulation_v_shader.glsl

@@ -3,19 +3,28 @@
 layout (location = 0) in vec3 pos;
 layout (location = 1) in vec2 texCoord;
 layout (location = 2) in float layer;
+layout (location = 3) in vec3 aNormal;
+layout (location = 4) in float Roughness;
+
 out vec2 tc;
+out vec3 normal;
+out vec3 vert_pos;
 flat out int tex_layer;
+out float roughness;
 out float v_depth;
 
 uniform mat4 mv_matrix;
 uniform mat4 proj_matrix;
-
+uniform mat4 norm_matrix;
 
 
 void main(void) {
     vec4 view_pos = mv_matrix * vec4(pos, 1.0);
-    gl_Position = proj_matrix * view_pos;
+    vert_pos = pos;
+    roughness = Roughness;
     tc = texCoord;
     tex_layer = int(layer);
     v_depth = -view_pos.z;
+    normal = mat3(norm_matrix) * aNormal;
+    gl_Position = proj_matrix * view_pos;
 }

assets/shaders/block_f_shader.glsl

@@ -1,15 +1,117 @@
 #version 460
 
 in vec2 tc;
+in vec3 normal;
+in vec3 vert_pos;
+in vec3 tangent;
+in vec3 bitangent;
+in vec4 FragPosLightSpace;
+in float roughness;
 flat in int tex_layer;
 out vec4 color;
+layout (binding = 0) uniform sampler2D shadowMap;
+layout (binding = 1) uniform sampler2DArray samp;
+layout (binding = 2) uniform sampler2DArray normMap;
+uniform float ambientStrength;
+uniform vec3 sunlightColor;
+uniform vec3 ambientColor;
+uniform vec3 sunlightDir;
+uniform vec3 cameraPos;
+uniform bool shader_on;
+uniform int shadowMode;
+uniform float specularStrength;
+uniform float lightSizeUV; 
+uniform float minRadius;
+uniform float maxRadius;
+uniform bool enablePBR;
+uniform bool flipY;
 
-layout (binding = 0) uniform sampler2DArray samp;
+uniform int renderDistance;
+uniform vec3 skyColor;
+
+#include "shadow.glsl"
+#include "normal.glsl"
 
 void main(void) {
-    color = texture(samp, vec3(tc, tex_layer));
-    if (color.a < 0.8) {
+    vec4 objectColor = texture(samp, vec3(tc, tex_layer));
+
+    if (objectColor.a < 0.8) {
         discard;
     }
-    //color = varyingColor;
+    if (!shader_on) {
+        color = objectColor;
+        return;
+    }
+   
+
+    vec3 lightDir = normalize(-sunlightDir);
+    vec3 norm; 
+    if (enablePBR) {
+        norm = calcNewNormal();
+    } else {
+        norm = normalize(normal);
+    }
+
+
+    vec3 V =
+        normalize(cameraPos - vert_pos);
+
+    vec3 H = 
+        normalize(lightDir + V);
+
+    vec3 ambient = ambientStrength * ambientColor;
+    
+    float diff = max(dot(norm, lightDir), 0.0);
+    
+    vec3 diffuse = diff * sunlightColor;
+    
+    float r =
+        clamp(roughness, 0.0, 1.0);
+
+    float shininess =
+        mix(
+            512.0,
+            4.0,
+            r
+        );
+    float ks =
+        mix(
+            0.8,
+            0.02,
+            r
+        );
+
+    float spec = 0.0;
+
+    if(diff > 0.0)
+    {
+        spec =
+            ks *
+            pow(
+                max(dot(norm,H),0.0),
+                shininess
+            );
+    }
+
+
+
+    
+    vec3 specular = spec * sunlightColor * specularStrength;
+
+    float shadow = ShadowCalculation(FragPosLightSpace, norm, lightDir);  
+    
+    // fog
+    float dist = length(cameraPos - vert_pos);
+    vec4 fogColor = vec4(skyColor, 1.0);
+    float fogStart = renderDistance * 16 * 0.9;
+    float fogEnd   = renderDistance * 16;
+
+    float fogFactor = smoothstep(fogEnd, fogStart, dist);
+    color = vec4((ambient + (1.0 - shadow) * (diffuse)) * objectColor.rgb + (1.0-shadow) * specular * objectColor.rgb, objectColor.a);
+    
+    color = mix(fogColor, color, fogFactor);
+    //color = vec4(normal * 0.5 + 0.5, 1.0);
+    //color = vec4(tangent * 0.5 + 0.5, 1.0);;
+    //color = vec4(norm * 0.5 + 0.5, 1.0);
+    //color = vec4(calcNewNormal(), 1.0);
 }

assets/shaders/block_v_shader.glsl

@@ -3,8 +3,17 @@
 layout (location = 0) in vec3 pos;
 layout (location = 1) in vec2 texCoord;
 layout (location = 2) in float layer;
+layout (location = 3) in vec3 aNormal;
+layout (location = 4) in float Roughness;
+layout (location = 5) in vec3 aTangent;
 out vec2 tc;
+out vec3 normal;
+out vec3 tangent;
+out vec3 bitangent;
+out vec3 vert_pos;
 flat out int tex_layer;
+out vec4 FragPosLightSpace;
+out float roughness;
 
 mat4 buildRotateX(float rad);
 mat4 buildRotateY(float rad);
@@ -13,13 +22,24 @@ mat4 buildTranslate(float x, float y, float z);
 
 uniform mat4 mv_matrix;
 uniform mat4 proj_matrix;
-
-
+uniform mat4 model_matrix;
+uniform mat4 norm_matrix;
+uniform mat4 lightSpaceMatrix;
 
 void main(void) {
-    gl_Position = proj_matrix * mv_matrix * vec4(pos, 1.0);
+    vec4 viewPos = mv_matrix * vec4(pos, 1.0);
+
+    vert_pos = pos;
+
     tc = texCoord;
+    
     tex_layer = int(layer);
+    roughness = Roughness;
+    normal = normalize(mat3(norm_matrix) * aNormal);
+    tangent = normalize(mat3(model_matrix) * aTangent);
+    bitangent = cross(normal, tangent);
+    FragPosLightSpace = lightSpaceMatrix * vec4(pos, 1.0);
+    gl_Position = proj_matrix * viewPos;
 }
 
 mat4 buildTranslate(float x, float y, float z) {

assets/shaders/compute_sky_color.glsl

@@ -0,0 +1,46 @@
+#include "noise.glsl"
+
+vec3 computeSkyColor(vec3 dir) {
+    vec3 sund = normalize(sunDir);
+
+    float t =
+        clamp(
+            dir.y * 0.5 + 0.5,
+            0.0,
+            1.0
+        );
+
+
+    vec3 sky =
+        mix(
+            skyBottom,
+            skyTop,
+            pow(t, horizonSharpness)
+        );
+
+    // cloud
+    if (dir.y > 0.0) {
+        vec2 cloud_uv = dir.xz / (dir.y + 0.15) * 0.5 + vec2(time * 0.005, time * 0.002);
+        float cloud_density = fbm(cloud_uv * 2.0);
+        float safeLow = cloudThresholdLow;
+        float safeHigh = max(cloudThresholdHigh, cloudThresholdLow + 0.001);
+        cloud_density = smoothstep(safeLow,safeHigh, cloud_density);
+
+        
+        float fade = smoothstep(0.0, 0.3, dir.y) * (1.0 - smoothstep(0.85, 1.0, dir.y));
+        cloud_density *= fade;
+
+        vec3 cloud_color = mix(skyBottom, vec3(1.0), cloudWhiteMix); 
+        sky = mix(sky, cloud_color, cloud_density * 0.6);
+    }
+
+    float sunAmount = max(dot(dir, sund), 0.0);
+        
+    //float glow = pow(sunAmount, 8.0) * 0.15;
+        
+    float glow = pow(sunAmount, 8.0) * 0.15 + pow(sunAmount, 32.0) * 0.3;
+
+    sky += glow * sunColor;
+
+    return sky;
+}

assets/shaders/depth_fragment_shader.glsl

@@ -0,0 +1,16 @@
+#version 460
+
+in vec2 tc;
+flat in int tex_layer;
+layout (binding = 1) uniform sampler2DArray samp;
+
+uniform bool is_discard_tranparent;
+
+void main() {
+    if (is_discard_tranparent) {
+        vec4 texColor = texture(samp, vec3(tc, tex_layer));
+        if (texColor.a < 0.8) 
+            discard;
+    }   
+    //gl_FragDepth = gl_FragCoord.z; 
+}

assets/shaders/depth_player_fragment_shader.glsl

@@ -0,0 +1,7 @@
+#version 460
+
+in vec2 tc;
+
+void main() {
+
+}

assets/shaders/depth_player_shader.glsl

@@ -0,0 +1,15 @@
+#version 460
+
+layout (location = 0) in vec3 pos;
+layout (location = 1) in vec2 texCoord;
+
+uniform mat4 lightSpaceMatrix;
+uniform mat4 modelMatrix;
+
+out vec2 tc;
+flat out int tex_layer;
+
+void main() {
+    tc = texCoord;
+    gl_Position = lightSpaceMatrix * modelMatrix * vec4(pos, 1.0);
+}

assets/shaders/depth_shader.glsl

@@ -1,18 +1,12 @@
 #version 460
-
-layout (location = 0) in vec2 pos;
+layout (location = 0) in vec3 pos;
 layout (location = 1) in vec2 texCoord;
 layout (location = 2) in float layer;
-
+uniform mat4 lightSpaceMatrix;
 out vec2 tc;
-
 flat out int tex_layer;
-
-uniform mat4 m_matrix;
-uniform mat4 proj_matrix;
-
-void main(void) {
-    gl_Position = proj_matrix * m_matrix * vec4(pos, 0.0, 1.0);
+void main() {
     tc = texCoord;
     tex_layer = int(layer);
-}
+    gl_Position = lightSpaceMatrix  * vec4(pos, 1.0);
+}

assets/shaders/image_f_shader.glsl

@@ -0,0 +1,11 @@
+#version 460
+
+in vec2 tc;
+
+out vec4 color;
+
+layout (binding = 0) uniform sampler2D samp;
+
+void main(void) {
+    color = texture(samp, tc);
+}

assets/shaders/image_v_shader.glsl

@@ -0,0 +1,14 @@
+#version 460
+
+layout (location = 0) in vec2 pos;
+layout (location = 1) in vec2 texCoord;
+
+out vec2 tc;
+
+uniform mat4 model_matrix;
+uniform mat4 proj_matrix;
+
+void main(void) {
+    gl_Position = proj_matrix * model_matrix * vec4(pos, 0.0, 1.0);
+    tc = texCoord;
+}

assets/shaders/noise.glsl

@@ -0,0 +1,25 @@
+float hash(vec2 p) {
+    return fract(sin(dot(p, vec2(127.1, 311.7))) * 43758.5453123);
+}
+
+float noise(vec2 p) {
+    vec2 i = floor(p);
+    vec2 f = fract(p);
+    f = f * f * (3.0 - 2.0 * f);
+    float a = hash(i);
+    float b = hash(i + vec2(1.0, 0.0));
+    float c = hash(i + vec2(0.0, 1.0));
+    float d = hash(i + vec2(1.0, 1.0));
+    return mix(mix(a, b, f.x), mix(c, d, f.x), f.y);
+}
+
+float fbm(vec2 p) {
+    float v = 0.0;
+    float amp = 0.5;
+    for (int i = 0; i < 5; i++) {
+        v += amp * noise(p);
+        p *= 2.0;
+        amp *= 0.5;
+    }
+    return v;
+}

assets/shaders/normal.glsl

@@ -0,0 +1,10 @@
+vec3 calcNewNormal() {
+    mat3 TBN = mat3(normalize(tangent), normalize(bitangent), normalize(normal));
+    vec3 retrievedNormal = texture(normMap, vec3(tc, tex_layer)).xyz;       
+    retrievedNormal = retrievedNormal * 2.0 - 1.0;
+    if (flipY) {
+        retrievedNormal.y = -retrievedNormal.y;
+    }
+    vec3 newNormal = TBN * retrievedNormal;
+    return normalize(newNormal);
+}

assets/shaders/player_f_shader.glsl

@@ -0,0 +1,47 @@
+#version 460
+
+in vec2 tc;
+in vec3 normal;
+in vec3 vert_pos;
+in vec4 FragPosLightSpace;
+out vec4 color;
+
+layout (binding = 0) uniform sampler2D shadowMap;
+layout (binding = 1) uniform sampler2D samp;
+
+uniform float ambientStrength;
+uniform vec3 sunlightColor;
+uniform vec3 ambientColor;
+uniform vec3 sunlightDir;
+uniform bool shader_on;
+uniform int shadowMode;
+uniform float lightSizeUV; 
+uniform float minRadius;
+uniform float maxRadius;
+
+#include "shadow.glsl"
+
+void main() {
+    vec4 objectColor = texture(samp, tc);
+
+    if (!shader_on) {
+        color = objectColor;
+        return;
+    }
+   
+    vec3 lightDir = normalize(-sunlightDir);
+    
+    vec3 norm = normalize(normal);
+
+    vec3 ambient = ambientStrength * ambientColor;
+    
+    float diff = max(dot(norm, lightDir), 0.0);
+    
+    vec3 diffuse = diff * sunlightColor;
+ 
+    float shadow = ShadowCalculation(FragPosLightSpace, norm, lightDir);  
+    //float shadow = 0.0;
+    //color = vec4(vec3(shadow),1);
+    //color = vec4(vec3(diff),1);
+    color = vec4((ambient + (1.0 - shadow) * (diffuse)) * objectColor.rgb, objectColor.a);
+}

assets/shaders/player_v_shader.glsl

@@ -0,0 +1,27 @@
+#version 460
+
+layout (location = 0) in vec3 pos;
+layout (location = 1) in vec2 texCoord;
+layout (location = 2) in vec3 aNormal;
+layout (location = 3) in vec3 aTangent;
+
+uniform mat4 mv_matrix;
+uniform mat4 proj_matrix;
+uniform mat4 norm_matrix;
+uniform mat4 lightSpaceMatrix;
+uniform mat4 modelMatrix;
+out vec4 FragPosLightSpace;
+out vec3 normal;
+out vec2 tc;
+out vec3 vert_pos;
+
+
+void main() {
+    vec4 worldPos = modelMatrix * vec4(pos, 1.0);
+    FragPosLightSpace = lightSpaceMatrix * worldPos;
+    vec4 viewPos = mv_matrix * vec4(pos, 1.0);
+    tc = texCoord;
+    vert_pos = pos;
+    normal = normalize(mat3(norm_matrix) * aNormal);
+    gl_Position = proj_matrix * viewPos;
+}

assets/shaders/rect_f_shader.glsl

@@ -0,0 +1,9 @@
+#version 460
+
+out vec4 color;
+
+uniform vec4 inColor;
+
+void main(void) {
+    color = inColor;
+}

assets/shaders/rect_v_shader.glsl

@@ -0,0 +1,11 @@
+#version 460
+
+layout (location = 0) in vec2 pos;
+
+
+uniform mat4 model_matrix;
+uniform mat4 proj_matrix;
+
+void main(void) {
+    gl_Position = proj_matrix * model_matrix * vec4(pos, 0.0, 1.0);
+}

assets/shaders/shadow.glsl

@@ -0,0 +1,238 @@
+const vec2 poissonDisk32[32] = vec2[](
+    vec2(-0.975402, -0.071138),
+    vec2(-0.920347, -0.411420),
+    vec2(-0.883908,  0.217872),
+    vec2(-0.815442, -0.879125),
+    vec2(-0.775043,  0.543896),
+    vec2(-0.698126, -0.227570),
+    vec2(-0.682433,  0.801894),
+    vec2(-0.563905,  0.021517),
+    vec2(-0.443233, -0.975116),
+    vec2(-0.412231,  0.361307),
+    vec2(-0.264969, -0.418930),
+    vec2(-0.241888,  0.997065),
+    vec2(-0.094184, -0.929389),
+    vec2(-0.019101,  0.680997),
+    vec2( 0.143832, -0.141008),
+    vec2( 0.199841,  0.786414),
+
+    vec2( 0.344959,  0.293878),
+    vec2( 0.443233, -0.475115),
+    vec2( 0.537430, -0.473734),
+    vec2( 0.589349,  0.569135),
+    vec2( 0.674281, -0.178897),
+    vec2( 0.791975,  0.190902),
+    vec2( 0.815442,  0.879125),
+    vec2( 0.896420, -0.613392),
+    vec2( 0.945586, -0.768907),
+    vec2( 0.974844,  0.756484),
+    vec2(-0.814100,  0.914376),
+    vec2(-0.382775,  0.276768),
+    vec2(-0.915886,  0.457714),
+    vec2( 0.537800,  0.912200),
+    vec2(-0.620000, -0.650000),
+    vec2( 0.120000, -0.780000)
+);
+
+const vec2 poissonDisk16[16] = vec2[](
+    vec2(-0.94201624, -0.39906216), vec2(0.94558609, -0.76890725),
+    vec2(-0.09418410, -0.92938870), vec2(0.34495938, 0.29387760),
+    vec2(-0.91588581, 0.45771432), vec2(-0.81544232, -0.87912464),
+    vec2(-0.38277543, 0.27676845), vec2(0.97484398, 0.75648379),
+    vec2(0.44323325, -0.97511554), vec2(0.53742981, -0.47373420),
+    vec2(-0.26496911, -0.41893023), vec2(0.79197514, 0.19090188),
+    vec2(-0.24188840, 0.99706507), vec2(-0.81409955, 0.91437590),
+    vec2(0.19984126, 0.78641367), vec2(0.14383161, -0.14100790)
+);
+const vec2 poissonDisk8[8] = vec2[](
+    vec2( 0.1440,  0.7659), vec2(-0.5761,  0.4479),
+    vec2(-0.3220, -0.6058), vec2( 0.5693, -0.4048),
+    vec2(-0.1276,  0.1657), vec2(-0.0649, -0.0165),
+    vec2( 0.2773, -0.0305), vec2(-0.1134, -0.2122)
+);
+uniform int samples;
+float random(vec3 seed) {
+    return fract(sin(dot(seed, vec3(12.9898,78.233,45.5432))) * 43758.5453);
+}
+
+float FindBlocker(vec2 uv,
+                  float zReceiver,
+                  vec2 texelSize,
+                  float bias,
+                  float lightSizeUV)
+{
+    float avgDepth = 0.0;
+    int blockers = 0;
+
+    float searchRadius = lightSizeUV * 0.5;
+
+    for(int i = 0; i < samples; i++)
+    {    
+        vec2 offset;
+        if (samples == 32) {
+            offset =
+            poissonDisk32[i]
+            * searchRadius
+            * texelSize;
+        } else if (samples == 16) {
+            offset =
+            poissonDisk16[i]
+            * searchRadius
+            * texelSize;
+        } else if (samples == 8) {
+            offset =
+            poissonDisk8[i]
+            * searchRadius
+            * texelSize;
+        } else {
+            offset =
+            poissonDisk32[i]
+            * searchRadius
+            * texelSize;
+        }
+        float depth =
+            texture(shadowMap, uv + offset).r;
+
+        if(depth < zReceiver - bias)
+        {
+            avgDepth += depth;
+            blockers++;
+        }
+    }
+
+    if(blockers == 0)
+        return -1.0;
+
+    return avgDepth / blockers;
+}
+
+float ShadowCalculation(vec4 fragPosLightSpace, vec3 norm, vec3 lightDir)
+{
+
+    vec3 projCoords = fragPosLightSpace.xyz / fragPosLightSpace.w;
+
+    projCoords = projCoords * 0.5 + 0.5;
+    if (projCoords.x < 0.0 || projCoords.x > 1.0 ||
+        projCoords.y < 0.0 || projCoords.y > 1.0 ||
+        projCoords.z < 0.0 || projCoords.z > 1.0) {
+        return 0.0;
+    }
+    float currentDepth = projCoords.z;
+    vec2 texelSize = 1.0 / vec2(textureSize(shadowMap, 0));
+    float shadow = 0.0;
+
+    float bias =
+    clamp(
+        0.001 * (1.0 - dot(norm, lightDir)),
+        0.0003,
+        0.003
+    );
+
+    if (shadowMode == 0) {
+        vec3 seed = vert_pos * 37.0 + sin(vert_pos * 91.7) * 13.0;
+        float angle = random(seed) * 6.2831853;; // 2*PI
+        float s = sin(angle), c = cos(angle);
+        mat2 rot = mat2(c, -s, s, c);
+        //float radius = 0.7;
+        float radius = mix(1.0, 4.0, currentDepth);
+        
+        for (int i = 0; i < samples; ++i) {
+            vec2 offset;
+            if (samples == 32) {
+                offset = rot * poissonDisk32[i] * radius * texelSize;
+            } else if (samples == 16) {
+                offset = rot * poissonDisk16[i] * radius * texelSize;
+            } else if (samples == 8) {
+                offset = rot * poissonDisk8[i] * radius * texelSize;
+            } else {
+               offset = rot * poissonDisk32[i] * radius * texelSize;
+            }
+            float pcfDepth = texture(shadowMap, projCoords.xy + offset).r;
+            shadow += (currentDepth - bias > pcfDepth ? 1.0 : 0.0);
+        }
+        shadow /= float(samples);
+    } else if (shadowMode == 1) {
+        for (int x = -1; x <= 1; ++x) {
+            for (int y = -1; y <= 1; ++y) {
+                vec2 offset = vec2(x, y) * texelSize;
+                float pcfDepth = texture(shadowMap, projCoords.xy + offset).r;
+                shadow += (currentDepth - bias > pcfDepth ? 1.0 : 0.0);
+            }
+        }
+        shadow /= 9.0;
+    } else if (shadowMode == 2) {
+        // pcf off
+        float pcfDepth =
+        texture(shadowMap, projCoords.xy).r;
+
+        shadow =
+        currentDepth - bias > pcfDepth
+            ? 1.0
+            : 0.0;
+    } else if (shadowMode == 3) {
+        float avgBlockerDepth =
+            FindBlocker(
+                projCoords.xy,
+                currentDepth,
+                texelSize,
+                bias,
+                lightSizeUV
+            );
+
+        if(avgBlockerDepth < 0.0)
+        {
+            return 0.0;
+        }
+
+        vec3 seed = vert_pos * 37.0 + sin(vert_pos * 91.7) * 13.0;
+        float angle = random(seed) * 6.2831853;; // 2*PI
+        float s = sin(angle), c = cos(angle);
+        mat2 rot = mat2(c, -s, s, c);
+        /*
+        float penumbraRatio = (currentDepth - avgBlockerDepth);
+        float radius = clamp(
+            penumbraRatio * lightSizeUV,
+            minRadius,
+            maxRadius
+        );
+        */
+        float radius =
+            mix(
+                minRadius,
+                maxRadius,
+                smoothstep(
+                    0.0,
+                    0.05,
+                    currentDepth - avgBlockerDepth
+                )
+            );
+        for (int i = 0; i < samples; ++i) {
+            vec2 offset;
+            if (samples == 32) {
+                offset = rot * poissonDisk32[i] * radius * texelSize;
+            } else if (samples == 16) {
+                offset = rot * poissonDisk16[i] * radius * texelSize;
+            } else if (samples == 8) {
+                offset = rot * poissonDisk8[i] * radius * texelSize;
+            } else {
+               offset = rot * poissonDisk32[i] * radius * texelSize;
+            }
+            float pcfDepth = texture(shadowMap, projCoords.xy + offset).r;
+            shadow += (currentDepth - bias > pcfDepth ? 1.0 : 0.0);
+        }
+        shadow /= float(samples);
+
+    } else {
+        float pcfDepth =
+        texture(shadowMap, projCoords.xy).r;
+
+        shadow =
+        currentDepth - bias > pcfDepth
+            ? 1.0
+            : 0.0;
+    }
+
+   
+    return shadow;
+}
+

assets/shaders/sky_f_shader.glsl

@@ -1,9 +1,30 @@
 #version 460
 
+in vec3 dir;
+
 out vec4 frag_color;
 
+
+uniform vec3 skyTop;
+uniform vec3 skyBottom;
+
+uniform vec3 sunDir;
+uniform vec3 sunColor;
+
+uniform float horizonSharpness;
+uniform float cloudWhiteMix;
+
+uniform float cloudThresholdLow; 
+uniform float cloudThresholdHigh;
+
+uniform float time;
+
+#include "compute_sky_color.glsl"
+
 void main(void) {
     
-    frag_color = vec4(0.529, 0.808, 0.922, 1.0);
+    vec3 sky = computeSkyColor(dir);
 
+    frag_color = vec4(sky, 1.0);
+    
 }

assets/shaders/sky_v_shader.glsl

@@ -5,6 +5,12 @@ layout (location = 0) in vec3 vertices_pos;
 uniform mat4 mv_matrix;
 uniform mat4 proj_matrix;
 
+out vec3 dir;
+
 void main(void) {
+    // Our skybox mesh uses [0,1] coordinates instead of the usual [-1,1].
+    // Shift to the cube center before normalizing to obtain the correct
+    // view direction for atmospheric calculations.
+    dir = normalize(vertices_pos - vec3(0.5));
     gl_Position = proj_matrix * mv_matrix * vec4(vertices_pos, 1.0);
 }

assets/shaders/ui_f_shader.glsl

@@ -1,12 +0,0 @@
-#version 460
-
-in vec2 tc;
-flat in int tex_layer;
-
-out vec4 color;
-
-layout (binding = 0) uniform sampler2DArray samp;
-
-void main(void) {
-    color = texture(samp, vec3(tc, tex_layer));
-}

assets/shaders/under_water_f_shader.glsl

@@ -1,35 +1,111 @@
 #version 460
 
 in vec2 TexCoord;
+in vec3 rayDir;
 
 out vec4 FragColor;
 
-uniform sampler2D u_sceneTexture;
+layout (binding = 0) uniform sampler2D u_sceneTexture;
+layout (binding = 1) uniform sampler2D u_depthTexture;
+layout (binding = 2) uniform sampler2D u_shadowMap;
+uniform mat4 u_lightSpaceMatrix;
 uniform float u_time;
 uniform bool u_underwater;
 uniform vec3 u_waterColor;
 uniform float u_fogDensity;
+uniform mat4 InverseViewProjection; 
+uniform vec3 cameraPos;
+uniform vec3 sunDir;
+uniform vec3 sunColor;
+uniform float waterDensity;
+
+#include "noise.glsl"
+
+float getCausticValue(float x, float y, float z) {
+    float w = 8.0;      
+    float strength = 4.0;  
+    vec2 coord = vec2(x, y) * w + z * 0.5; 
+ 
+    float n = fbm(coord);
+
+    float caustic = pow(n, 3.0) * strength;
+    return caustic;
+}
+
+float getShadow(vec3 worldPos) {
+    vec4 posLightSpace = u_lightSpaceMatrix * vec4(worldPos, 1.0);
+    vec3 projCoords = posLightSpace.xyz / posLightSpace.w;
+    projCoords = projCoords * 0.5 + 0.5;
+    
+    if (projCoords.z > 1.0) return 1.0; 
+    
+    float closestDepth = texture(u_shadowMap, projCoords.xy).r;
+    float currentDepth = projCoords.z;
+    
+    return currentDepth - 0.005 > closestDepth ? 0.0 : 1.0; 
+}
 
 void main() {
     vec4 original = texture(u_sceneTexture, TexCoord);
-
+    
     if (!u_underwater) {
         FragColor = original;
         return;
     }
 
+    float rawDepth = texture(u_depthTexture, TexCoord).r;
+    vec3 ndc = vec3(TexCoord * 2.0 - 1.0, rawDepth * 2.0 - 1.0);
+    vec4 worldPosH = InverseViewProjection * vec4(ndc, 1.0);
+    vec3 worldPos = worldPosH.xyz / worldPosH.w;
+    float sceneDistance = distance(cameraPos, worldPos);
+    
     vec2 distoredUV = TexCoord;
     float strength = 0.003;
     distoredUV.x += sin(TexCoord.y * 15.0 + u_time * 5.0) * strength;
     distoredUV.y += cos(TexCoord.x * 15.0 + u_time * 4.3) * strength;
     distoredUV = clamp(distoredUV, 0.001, 0.999);
-    vec4 distorted = texture(u_sceneTexture, distoredUV);
+    vec4 distorted = texture(u_sceneTexture, distoredUV);  
+
+    float rawCaustic = getCausticValue(TexCoord.x, TexCoord.y, u_time * 0.3);
+    float caustic = 0.5 + rawCaustic * 0.5;    
+    vec3 causticLight = vec3(caustic * 0.9, caustic, caustic * 0.7);
 
-    float caustic = 0.9 + 0.1 * sin(TexCoord.x * 20.0 + u_time) * cos(TexCoord.y * 20.0 + u_time * 1.2);
-    vec3 causticLight = vec3(caustic, caustic * 0.95, caustic * 0.9);
-    //vec3 causticLight = vec3(1.0);
     float fogFactor = clamp(1.0 - (TexCoord.y * u_fogDensity * 10.0), 0.0, 1.0);
     vec3 mixed = mix(u_waterColor, distorted.rgb * causticLight, fogFactor);
+    // Volume Scattering
+    vec3 rayOrigin = cameraPos;
+    vec3 rayDirection = normalize(rayDir);
 
-    FragColor = vec4(mixed, 1.0);
+    float maxDist = 10.0;        // Maximum visible distance
+    float stepSize = 0.4;     
+    float phasePower = 8.0;      // Beam Sharpness
+
+    vec3 scattering = vec3(0.0);
+    float transmittance = 1.0;
+    
+    float cosTheta = dot(rayDirection, sunDir);
+    float phase = pow(max(cosTheta, 0.0), phasePower);
+
+    for (float t = 0.0; t < maxDist; t += stepSize) {
+
+        if (t > sceneDistance) break;
+        vec3 pos = rayOrigin + rayDirection * t;
+
+        float shadow = getShadow(pos);
+
+        float density = waterDensity; 
+
+
+        vec3 absorption = vec3(0.3, 0.08, 0.02); // Absorption coefficient per meter
+        vec3 sunLightAtPos = sunColor * exp(-absorption * t);
+
+        scattering += density * phase * sunLightAtPos * transmittance * stepSize * shadow;
+
+        float extinction = waterDensity * 1.5; // Extinction coefficient, tunable
+        transmittance *= exp(-extinction * stepSize);
+        if (transmittance < 0.01) break;
+    }
+
+    FragColor.rgb = mixed + scattering;
+    FragColor.a = 1.0;
 }

assets/shaders/under_water_v_shader.glsl

@@ -3,9 +3,18 @@
 layout (location = 0) in vec2 pos;
 layout (location = 1) in vec2 texCoord;
 
-out vec2 TexCoord;
+uniform mat4 InverseViewProjection; 
+uniform vec3 cameraPos;
 
+out vec2 TexCoord;
+out vec3 rayDir;
 void main() {
-    gl_Position = vec4(pos.x, pos.y, 0.0, 1.0);
     TexCoord = texCoord;
+    vec4 clipPos = vec4(pos, 1.0, 1.0);
+    vec4 worldPosH = InverseViewProjection * clipPos;
+    vec3 worldPos = worldPosH.xyz / worldPosH.w;
+    vec3 RayDir = worldPos - cameraPos;
+    rayDir = normalize(RayDir);
+    gl_Position = clipPos;
+    
 }

assets/shaders/water_f_shader.glsl

@@ -0,0 +1,248 @@
+#version 460
+
+layout (location = 0) out vec4 accum;
+layout (location = 1) out float reveal;
+
+in vec2 tc;
+in vec3 normal;
+in vec3 vert_pos;
+in vec3 world_pos;
+in float roughness;
+flat in int tex_layer;
+in float v_depth;
+layout (binding = 0) uniform sampler2DArray samp;
+uniform sampler2D sceneColorTex;   // binding 1
+uniform sampler2D sceneDepthTex;   // binding 2
+
+uniform mat4 proj_matrix;
+uniform mat4 inv_proj_matrix;
+uniform mat4 inv_view_matrix;
+
+uniform float ambientStrength;
+uniform vec3 sunlightColor;
+uniform vec3 ambientColor;
+uniform vec3 sunlightDir;
+uniform bool shader_on;
+uniform float specularStrength;
+
+uniform vec3 skyTop;
+uniform vec3 skyBottom;
+uniform vec3 sunColor;
+uniform float horizonSharpness;
+uniform float cloudWhiteMix;
+uniform float cloudThresholdLow;
+uniform float cloudThresholdHigh;
+uniform float time;
+
+uniform vec3 sunDir; // world!
+
+uniform bool underwater;
+
+uniform float refractStrength;
+
+uniform bool enablePerturb;
+uniform bool enableDepthFade;
+
+#include "compute_sky_color.glsl"
+
+float weight(float z, float a) {
+    float intermediate = 0.03 / (1e-5 + pow(z / 200.0, 4.0));
+    
+    return a * clamp(intermediate, 1e-2, 3e2);
+}
+
+
+// Reconstruct eye-space coordinates from screen UV and depth buffer value
+vec3 reconstructViewPos(vec2 uv, float depth) {
+    vec4 clip = vec4(uv * 2.0 - 1.0, depth * 2.0 - 1.0, 1.0);
+    vec4 view = inv_proj_matrix * clip;
+    return view.xyz / view.w;
+}
+// Screen-space ray marching, origin/dir are in eye space
+bool traceSSR(vec3 origin, vec3 dir, out vec2 hitUV) {
+    const int COARSE_STEPS = 32;
+    const float COARSE_STEP = 0.6;   
+    const int REFINE_STEPS = 8;
+    const float THICKNESS = 0.3;
+
+    vec3 pos = origin;
+    vec3 prevPos = origin;
+    bool foundCoarse = false;
+
+
+    for (int i = 0; i < COARSE_STEPS; ++i) {
+        prevPos = pos;
+        pos += dir * COARSE_STEP;
+
+        vec4 clip = proj_matrix * vec4(pos, 1.0);
+        if (clip.w <= 0.0) return false;
+        vec3 ndc = clip.xyz / clip.w;
+        if (abs(ndc.x) > 1.0 || abs(ndc.y) > 1.0) return false;
+
+        vec2 uv = ndc.xy * 0.5 + 0.5;
+        float sceneDepth = texture(sceneDepthTex, uv).r;
+        vec3 scenePos = reconstructViewPos(uv, sceneDepth);
+
+        if (pos.z - scenePos.z < 0.0) {
+            foundCoarse = true;
+            break;   
+        }
+    }
+
+    if (!foundCoarse) return false;
+
+ 
+    vec3 lo = prevPos;
+    vec3 hi = pos;
+
+    for (int i = 0; i < REFINE_STEPS; ++i) {
+        vec3 mid = (lo + hi) * 0.5;
+
+        vec4 clip = proj_matrix * vec4(mid, 1.0);
+        vec3 ndc = clip.xyz / clip.w;
+        vec2 uv = ndc.xy * 0.5 + 0.5;
+        float sceneDepth = texture(sceneDepthTex, uv).r;
+        vec3 scenePos = reconstructViewPos(uv, sceneDepth);
+
+        if (mid.z - scenePos.z < 0.0) {
+            hi = mid;  
+        } else {
+            lo = mid; 
+        }
+    }
+
+    vec4 finalClip = proj_matrix * vec4(hi, 1.0);
+    vec3 finalNdc = finalClip.xyz / finalClip.w;
+    vec2 finalUV = finalNdc.xy * 0.5 + 0.5;
+
+    float finalDepth = texture(sceneDepthTex, finalUV).r;
+    vec3 finalScenePos = reconstructViewPos(finalUV, finalDepth);
+
+    if (abs(hi.z - finalScenePos.z) > THICKNESS) return false;
+
+    hitUV = finalUV;
+    return true;
+}
+void main() {
+
+    vec4 objectColor = texture(samp, vec3(tc, tex_layer));
+
+    if (!shader_on) {
+        vec4 color = objectColor;
+        float alpha = color.a;
+        if (alpha < 1e-4) discard;
+
+
+        float w = weight(v_depth, alpha);
+
+        accum = vec4(color.rgb * alpha * w, alpha * w);
+
+        reveal = alpha;
+        return;
+    }
+    // Normal perturbation
+    vec3 N;
+    if (enablePerturb) {
+        const float wave_speed_scale = 40.0;
+        vec2 waveUV1 = world_pos.xz * 8.0 + vec2(time * 0.05 * wave_speed_scale, time * 0.03 * wave_speed_scale);
+        vec2 waveUV2 = world_pos.xz * 13.0 + vec2(-time * 0.04 * wave_speed_scale, time * 0.06 * wave_speed_scale);
+
+        float wave1 = noise(waveUV1);
+        float wave2 = noise(waveUV2);
+
+        vec2 normalPerturb = vec2(wave1 - 0.5, wave2 - 0.5) * 0.1;
+        N = normalize(normal + vec3(normalPerturb.x, 0.0, normalPerturb.y));
+    } else {
+        N = normalize(normal);
+    }
+
+    vec3 V = normalize(-vert_pos); 
+
+    vec3 reflectColor;
+    vec3 refractColor;
+    float fresnel;
+
+    vec2 screenUV = gl_FragCoord.xy / vec2(textureSize(sceneDepthTex, 0));
+
+    // water depth
+    float sceneDepthRaw = texture(sceneDepthTex, screenUV).r;
+    vec3 sceneViewPos = reconstructViewPos(screenUV, sceneDepthRaw);
+    float waterDepth = vert_pos.z - sceneViewPos.z;  
+    waterDepth = max(waterDepth, 0.0);  
+
+    const float DEPTH_FADE_DISTANCE = 10; 
+    float depthFactor = clamp(waterDepth / DEPTH_FADE_DISTANCE, 0.0, 1.0);
+
+    if (underwater) {
+        reflectColor = vec3(0.0);
+        refractColor = objectColor.rgb; 
+        fresnel = 0.0;
+    } else {
+        vec3 R = reflect(-V, N);
+        vec3 origin = vert_pos + N * 0.05;
+        vec2 hitUV;
+
+        if (traceSSR(origin, R, hitUV)) {
+            reflectColor = texture(sceneColorTex, hitUV).rgb;
+        } else {
+            vec3 worldR = mat3(inv_view_matrix) * R;
+            reflectColor = computeSkyColor(worldR);
+        }
+
+        float effectiveRefractStrength = refractStrength * (1.0 - depthFactor * 0.5);
+        vec2 refractOffset = N.xz * effectiveRefractStrength;
+        vec2 refractUV = clamp(screenUV + refractOffset, vec2(0.001), vec2(0.999));
+
+        refractColor = texture(sceneColorTex, refractUV).rgb;
+
+        fresnel = pow(1.0 - max(dot(N, V), 0.0), 5.0);
+        fresnel = mix(0.02, 1.0, fresnel);
+    }
+   
+    vec3 lightDir = normalize(-sunlightDir);
+    vec3 H = normalize(lightDir + V);
+    vec3 ambient = ambientStrength * ambientColor;
+    float diff = max(dot(N, lightDir), 0.0);
+    vec3 diffuse = diff * sunlightColor;
+
+    float r = clamp(roughness, 0.0, 1.0);
+    float shininess = mix(512.0, 4.0, r);
+    float ks = mix(0.8, 0.02, r);
+
+    float spec = 0.0;
+    if (diff > 0.0) {
+        spec = ks * pow(max(dot(N, H), 0.0), shininess);
+    }
+    vec3 specular = spec * sunlightColor * specularStrength;
+
+    vec3 tintedRefract;
+
+    if (enableDepthFade) {
+        vec3 shallowColor = vec3(0.4, 0.75, 0.7);   
+        vec3 deepColor = vec3(0.0, 0.015, 0.045); 
+
+        vec3 waterTint = mix(shallowColor, deepColor, depthFactor);
+
+        tintedRefract = mix(refractColor, refractColor * waterTint, depthFactor);
+        tintedRefract = mix(tintedRefract, objectColor.rgb, 0.4);  // Forcefully blend 40% texture color, independent of depth
+    } else {
+        tintedRefract = mix(refractColor, objectColor.rgb, 0.4);
+    }
+
+    //vec3 baseWaterColor = (ambient + diffuse) * objectColor.rgb + specular;
+    vec3 baseWaterColor = (ambient + diffuse) * tintedRefract + specular;
+  
+    vec3 finalColor = mix(baseWaterColor, reflectColor, fresnel);
+
+    float alpha = objectColor.a;
+    if (alpha < 1e-4) discard;
+
+
+    float w = weight(v_depth, alpha);
+
+    accum = vec4(finalColor * alpha * w, alpha * w);
+
+    reveal = alpha;
+
+    return;
+}

assets/shaders/water_v_shader.glsl

@@ -0,0 +1,32 @@
+#version 460
+
+layout (location = 0) in vec3 pos;
+layout (location = 1) in vec2 texCoord;
+layout (location = 2) in float layer;
+layout (location = 3) in vec3 aNormal;
+layout (location = 4) in float Roughness;
+
+out vec2 tc;
+out vec3 normal;
+out vec3 vert_pos;
+out vec3 world_pos;
+flat out int tex_layer;
+out float roughness;
+out float v_depth;
+
+uniform mat4 mv_matrix;
+uniform mat4 proj_matrix;
+uniform mat4 norm_matrix;
+
+
+void main(void) {
+    vec4 view_pos = mv_matrix * vec4(pos, 1.0);
+    world_pos = pos;
+    vert_pos = view_pos.xyz;
+    normal = mat3(norm_matrix) * aNormal;
+    roughness = Roughness;
+    tc = texCoord;
+    tex_layer = int(layer);
+    v_depth = -view_pos.z;
+    gl_Position = proj_matrix * view_pos;
+}