feature: chat (#36)

* fix(config): load config on demand in get/set instead of asserting

* feat(chat): implement in-game chat box with UTF-8 support

- Add ChatMessage struct and ChatBox widget for displaying and sending messages
- Introduce split_utf8() in text_tools for splitting UTF-8 strings by character count
- Add TimeTools utility (get_time_ticks) for message timestamps
- Update TextField with start_typing/stop_typing methods and set_typing()
- Integrate text input handling in WorldScene and WorldUIManager for chat
- Add utf8cpp library for robust UTF-8 validation and processing
- Add ChatBox rendering and input logic (src/ui/chat_box.cpp)
- Register ChatBox source in CMakeLists.txt
- Fix Renderer::render_lable to skip rendering if VAO is null
- Update credits to include utf8cpp library

* fix(ui): correct chat box layout with dynamic height and bottom anchor

* feat(chat): implement client-server chat messaging

Add protobuf definition for ChatMsg, new packet ID CHAT_MSG (4001), and
handle sending/receiving chat messages on both client and server side.
Wire up UI components (ChatBox, TextField) to allow message input and
display, including a message queue in ClientWorld for thread-safe
processing. Also add default initialization for ChatMessage::time.

* feat(chat): distinguish between send and cancel in chat input

* feat(ui): add background to Label widget and refactor debug overlay

* refactor(ui): decouple ChatBox from image dependencies, allow custom TextField backgrounds

TextField's background is now a generic `Widget` pointer, enabling use of any widget (e.g., `Rect`, `Image`) as background. `ChatBox` no longer creates its own `TextField`; it accepts one via `set_text_field`. Removed `set_d_image` and `set_default_image` in favor of `set_background`. Added a shared default image constant in `default_image.hpp`. Updated `host_game_ui.cpp`, `join_game_ui.cpp`, and `world_ui_manager.cpp` to construct backgrounds accordingly.

* refactor(ui): move width, height, and fill properties to base Widget

Consolidate width, height, and fill (fill_parent, fill_width, fill_height) into the base Widget class. Replace per-widget set_fill(bool) with set_fill_parent(bool), set_fill_width(bool), and set_fill_height(bool).

* refactor(ui): generalize Label background, add ChatBox width method

* feat(chat): implement message expiration after 5 seconds

* feat(ui): add word wrap for chat messages with font width measurement

* feat(audio): implement voice chat using Opus codec

Add voice chat support with Opus encoding/decoding, push-to-talk (V key), and new audio recording infrastructure.

* feat(audio): implement voice chat with Opus codec and streaming audio source

Add AudioStreamSource for continuous PCM playback. Refactor voice send/receive to encode with Opus and stream to a dedicated source instead of per-frame sources. Enable voice transmission over network.

* feat(audio): add spatial voice source with underwater effects

Update voice source to support spatial positioning, low-pass filter, and reverb effect for underwater immersion. Adjust source pool size and low-pass filter parameter. Correct receive_voice parameter type.

* feat(settings): add player voice volume and voice input type options

- Add player voice volume slider and voice input type combo in settings UI.
- Add localization strings for player voice and voice input types.
- Add config overloads for const char* default values.
- Implement voice input types (PTT, always, off) in world scene.
- Refactor WorldScene member order and add load_config method.
- Update audio engine to use player voice volume.
- Downgrade some logging to debug.

* fix(event): delegate error UI events to each handler

Move error UI event check from top of handle_event into each individual
event handler (mouse_move, mouse_button, mouse_wheel, key, text_input).
Also flatten window resize dispatch: all sub-handlers are called regardless
of previous handler return values, and the method always returns false.

* feat(chat): add colored system messages for player join/exit

* chore(logging): reduce verbosity for audio loading and input events

* fix(settings): fix typo in config key "vloume"

* feat(ui): add microphone icon when recording voice

* feat(voice): limit voice message range to 48 units

* chore(logging): downgrade text input log level to debug

* feat(credits): add license identifiers and reorganize license files

* feat: add sensitive word filter for chat messages

Implement AC automaton-based filtering using a sensitive lexicon loaded from a JSON asset file. The filter is applied to both player names and chat messages before broadcasting, and can be toggled via the `sensitive_filter` config option.

* feat(server): add config option to disable voice chat

* fix: correct utf8 validation, add missing include, remove debug log

.clang-format

@@ -0,0 +1,321 @@
+---
+Language:        Cpp
+AlignAfterOpenBracket: true
+AccessModifierOffset: -4
+AlignArrayOfStructures: None
+AlignConsecutiveAssignments:
+  Enabled:         false
+  AcrossEmptyLines: false
+  AcrossComments:  false
+  AlignCompound:   false
+  AlignFunctionDeclarations: false
+  AlignFunctionPointers: false
+  PadOperators:    true
+AlignConsecutiveBitFields:
+  Enabled:         false
+  AcrossEmptyLines: false
+  AcrossComments:  false
+  AlignCompound:   false
+  AlignFunctionDeclarations: false
+  AlignFunctionPointers: false
+  PadOperators:    false
+AlignConsecutiveDeclarations:
+  Enabled:         false
+  AcrossEmptyLines: false
+  AcrossComments:  false
+  AlignCompound:   false
+  AlignFunctionDeclarations: true
+  AlignFunctionPointers: false
+  PadOperators:    false
+AlignConsecutiveMacros:
+  Enabled:         false
+  AcrossEmptyLines: false
+  AcrossComments:  false
+  AlignCompound:   false
+  AlignFunctionDeclarations: false
+  AlignFunctionPointers: false
+  PadOperators:    false
+AlignConsecutiveShortCaseStatements:
+  Enabled:         false
+  AcrossEmptyLines: false
+  AcrossComments:  false
+  AlignCaseArrows: false
+  AlignCaseColons: false
+AlignConsecutiveTableGenBreakingDAGArgColons:
+  Enabled:         false
+  AcrossEmptyLines: false
+  AcrossComments:  false
+  AlignCompound:   false
+  AlignFunctionDeclarations: false
+  AlignFunctionPointers: false
+  PadOperators:    false
+AlignConsecutiveTableGenCondOperatorColons:
+  Enabled:         false
+  AcrossEmptyLines: false
+  AcrossComments:  false
+  AlignCompound:   false
+  AlignFunctionDeclarations: false
+  AlignFunctionPointers: false
+  PadOperators:    false
+AlignConsecutiveTableGenDefinitionColons:
+  Enabled:         false
+  AcrossEmptyLines: false
+  AcrossComments:  false
+  AlignCompound:   false
+  AlignFunctionDeclarations: false
+  AlignFunctionPointers: false
+  PadOperators:    false
+AlignEscapedNewlines: Right
+AlignOperands:   Align
+AlignTrailingComments:
+  AlignPPAndNotPP: true
+  Kind:            Always
+  OverEmptyLines:  0
+AllowAllArgumentsOnNextLine: true
+AllowAllParametersOfDeclarationOnNextLine: true
+AllowBreakBeforeNoexceptSpecifier: Never
+AllowBreakBeforeQtProperty: false
+AllowShortBlocksOnASingleLine: Never
+AllowShortCaseExpressionOnASingleLine: true
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortCompoundRequirementOnASingleLine: true
+AllowShortEnumsOnASingleLine: true
+AllowShortFunctionsOnASingleLine: All
+AllowShortIfStatementsOnASingleLine: Never
+AllowShortLambdasOnASingleLine: All
+AllowShortLoopsOnASingleLine: false
+AllowShortNamespacesOnASingleLine: false
+AlwaysBreakAfterDefinitionReturnType: None
+AlwaysBreakBeforeMultilineStrings: false
+AttributeMacros:
+  - __capability
+BinPackArguments: true
+BinPackLongBracedList: true
+BinPackParameters: BinPack
+BitFieldColonSpacing: Both
+BracedInitializerIndentWidth: -1
+BraceWrapping:
+  AfterCaseLabel:  false
+  AfterClass:      false
+  AfterControlStatement: Never
+  AfterEnum:       false
+  AfterExternBlock: false
+  AfterFunction:   false
+  AfterNamespace:  false
+  AfterObjCDeclaration: false
+  AfterStruct:     false
+  AfterUnion:      false
+  BeforeCatch:     false
+  BeforeElse:      false
+  BeforeLambdaBody: false
+  BeforeWhile:     false
+  IndentBraces:    false
+  SplitEmptyFunction: true
+  SplitEmptyRecord: true
+  SplitEmptyNamespace: true
+BreakAdjacentStringLiterals: true
+BreakAfterAttributes: Leave
+BreakAfterJavaFieldAnnotations: false
+BreakAfterOpenBracketBracedList: false
+BreakAfterOpenBracketFunction: false
+BreakAfterOpenBracketIf: false
+BreakAfterOpenBracketLoop: false
+BreakAfterOpenBracketSwitch: false
+BreakAfterReturnType: None
+BreakArrays:     true
+BreakBeforeBinaryOperators: None
+BreakBeforeCloseBracketBracedList: false
+BreakBeforeCloseBracketFunction: false
+BreakBeforeCloseBracketIf: false
+BreakBeforeCloseBracketLoop: false
+BreakBeforeCloseBracketSwitch: false
+BreakBeforeConceptDeclarations: Always
+BreakBeforeBraces: Attach
+BreakBeforeInlineASMColon: OnlyMultiline
+BreakBeforeTemplateCloser: false
+BreakBeforeTernaryOperators: true
+BreakBinaryOperations: Never
+BreakConstructorInitializers: BeforeColon
+BreakFunctionDefinitionParameters: false
+BreakInheritanceList: BeforeColon
+BreakStringLiterals: true
+BreakTemplateDeclarations: MultiLine
+ColumnLimit:     80
+CommentPragmas:  '^ IWYU pragma:'
+CompactNamespaces: false
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+Cpp11BracedListStyle: AlignFirstComment
+DerivePointerAlignment: false
+DisableFormat:   false
+EmptyLineAfterAccessModifier: Never
+EmptyLineBeforeAccessModifier: LogicalBlock
+EnumTrailingComma: Leave
+ExperimentalAutoDetectBinPacking: false
+FixNamespaceComments: true
+ForEachMacros:
+  - foreach
+  - Q_FOREACH
+  - BOOST_FOREACH
+IfMacros:
+  - KJ_IF_MAYBE
+IncludeBlocks:   Regroup
+IncludeCategories:
+  - Regex:           '^"(llvm|llvm-c|clang|clang-c)/'
+    Priority:        2
+    SortPriority:    0
+    CaseSensitive:   false
+  - Regex:           '^(<|"(gtest|gmock|isl|json)/)'
+    Priority:        3
+    SortPriority:    0
+    CaseSensitive:   false
+  - Regex:           '.*'
+    Priority:        1
+    SortPriority:    0
+    CaseSensitive:   false
+IncludeIsMainRegex: '(Test)?$'
+IncludeIsMainSourceRegex: ''
+IndentAccessModifiers: false
+IndentCaseBlocks: false
+IndentCaseLabels: false
+IndentExportBlock: true
+IndentExternBlock: AfterExternBlock
+IndentGotoLabels: true
+IndentPPDirectives: None
+IndentRequiresClause: true
+IndentWidth:     4
+IndentWrappedFunctionNames: false
+InsertBraces:    false
+InsertNewlineAtEOF: false
+InsertTrailingCommas: None
+IntegerLiteralSeparator:
+  Binary:          0
+  BinaryMinDigitsInsert: 0
+  BinaryMaxDigitsRemove: 0
+  Decimal:         0
+  DecimalMinDigitsInsert: 0
+  DecimalMaxDigitsRemove: 0
+  Hex:             0
+  HexMinDigitsInsert: 0
+  HexMaxDigitsRemove: 0
+  BinaryMinDigits: 0
+  DecimalMinDigits: 0
+  HexMinDigits:    0
+JavaScriptQuotes: Leave
+JavaScriptWrapImports: true
+KeepEmptyLines:
+  AtEndOfFile:     false
+  AtStartOfBlock:  true
+  AtStartOfFile:   true
+KeepFormFeed:    false
+LambdaBodyIndentation: Signature
+LineEnding:      DeriveLF
+MacroBlockBegin: ''
+MacroBlockEnd:   ''
+MainIncludeChar: Quote
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+NumericLiteralCase:
+  ExponentLetter:  Leave
+  HexDigit:        Leave
+  Prefix:          Leave
+  Suffix:          Leave
+ObjCBinPackProtocolList: Auto
+ObjCBlockIndentWidth: 2
+ObjCBreakBeforeNestedBlockParam: true
+ObjCSpaceAfterProperty: false
+ObjCSpaceBeforeProtocolList: true
+OneLineFormatOffRegex: ''
+PackConstructorInitializers: BinPack
+PenaltyBreakAssignment: 2
+PenaltyBreakBeforeFirstCallParameter: 19
+PenaltyBreakBeforeMemberAccess: 150
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakOpenParenthesis: 0
+PenaltyBreakScopeResolution: 500
+PenaltyBreakString: 1000
+PenaltyBreakTemplateDeclaration: 10
+PenaltyExcessCharacter: 1000000
+PenaltyIndentedWhitespace: 0
+PenaltyReturnTypeOnItsOwnLine: 60
+PointerAlignment: Left
+PPIndentWidth:   -1
+QualifierAlignment: Leave
+ReferenceAlignment: Pointer
+ReflowComments:  Always
+RemoveBracesLLVM: false
+RemoveEmptyLinesInUnwrappedLines: false
+RemoveParentheses: Leave
+RemoveSemicolon: false
+RequiresClausePosition: OwnLine
+RequiresExpressionIndentation: OuterScope
+SeparateDefinitionBlocks: Leave
+ShortNamespaceLines: 1
+SkipMacroDefinitionBody: false
+SortIncludes:
+  Enabled:         true
+  IgnoreCase:      false
+  IgnoreExtension: false
+SortJavaStaticImport: Before
+SortUsingDeclarations: LexicographicNumeric
+SpaceAfterCStyleCast: false
+SpaceAfterLogicalNot: false
+SpaceAfterOperatorKeyword: false
+SpaceAfterTemplateKeyword: true
+SpaceAroundPointerQualifiers: Default
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCaseColon: false
+SpaceBeforeCpp11BracedList: false
+SpaceBeforeCtorInitializerColon: true
+SpaceBeforeInheritanceColon: true
+SpaceBeforeJsonColon: false
+SpaceBeforeParens: ControlStatements
+SpaceBeforeParensOptions:
+  AfterControlStatements: true
+  AfterForeachMacros: true
+  AfterFunctionDefinitionName: false
+  AfterFunctionDeclarationName: false
+  AfterIfMacros:   true
+  AfterNot:        false
+  AfterOverloadedOperator: false
+  AfterPlacementOperator: true
+  AfterRequiresInClause: false
+  AfterRequiresInExpression: false
+  BeforeNonEmptyParentheses: false
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceBeforeSquareBrackets: false
+SpaceInEmptyBraces: Never
+SpacesBeforeTrailingComments: 1
+SpacesInAngles:  Never
+SpacesInContainerLiterals: true
+SpacesInLineCommentPrefix:
+  Minimum:         1
+  Maximum:         -1
+SpacesInParens:  Never
+SpacesInParensOptions:
+  ExceptDoubleParentheses: false
+  InCStyleCasts:   false
+  InConditionalStatements: false
+  InEmptyParentheses: false
+  Other:           false
+SpacesInSquareBrackets: false
+Standard:        Latest
+StatementAttributeLikeMacros:
+  - Q_EMIT
+StatementMacros:
+  - Q_UNUSED
+  - QT_REQUIRE_VERSION
+TableGenBreakInsideDAGArg: DontBreak
+TabWidth:        8
+UseTab:          Never
+VerilogBreakBetweenInstancePorts: true
+WhitespaceSensitiveMacros:
+  - BOOST_PP_STRINGIZE
+  - CF_SWIFT_NAME
+  - NS_SWIFT_NAME
+  - PP_STRINGIZE
+  - STRINGIZE
+WrapNamespaceBodyWithEmptyLines: Leave
+...
+

.clang-format-ignore

@@ -0,0 +1,3 @@
+third_party/
+build/
+vendor/

.clangd

@@ -0,0 +1,2 @@
+CompileFlags:
+  Add: [-Wall, -Wextra, -Wpedantic, -Wno-unused-parameter]

.github/workflows/format-check.yml

@@ -0,0 +1,29 @@
+name: Code Format Check
+
+on: [push, pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  formatting:
+    runs-on: ubuntu-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 \
+            \( -name '*.cpp' -o -name '*.hpp' \) \
+            -print0 | xargs -0 clang-format-22 --dry-run --Werror

.github/workflows/release-build.yml

@@ -0,0 +1,161 @@
+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: ${{ matrix.os }}
+    env:
+            VCPKG_BINARY_SOURCES: clear;files,${{ github.workspace }}/.vcpkg-cache,readwrite
+    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: Cache vcpkg
+        uses: actions/cache@v4
+        with:
+          path: .vcpkg-cache
+          key: ${{ runner.os }}-vcpkg-${{ hashFiles('vcpkg.json') }}
+          restore-keys: |
+            ${{ runner.os }}-vcpkg-
+      - name: Bootstrap vcpkg
+        run: |
+          git clone https://github.com/microsoft/vcpkg.git
+          ./vcpkg/bootstrap-vcpkg.bat
+      
+      - name: Configure
+        if: matrix.platform == 'windows'
+        run: >
+          cmake
+          -B build
+          -G Ninja
+          -DCMAKE_BUILD_TYPE=Release
+          -DCMAKE_TOOLCHAIN_FILE=${{ 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

@@ -39,4 +39,9 @@ CMakeError.log
 *.swp
 *.swo
 *~
-.DS_Store
+.DS_Store
+assets/config.toml
+assets/server-config.toml
+.venv/
+pyout/
+vcpkg_installed/

.pre-commit-config.yaml

@@ -0,0 +1,8 @@
+repos:
+  - repo: https://github.com/pre-commit/mirrors-clang-format
+    rev: "v22.1.4"
+    hooks:
+      - id: clang-format
+        args: ["--style=file"]
+        types_or: ["c++", "c"]
+        exclude: '^third_party/.*$'

.python-version

@@ -0,0 +1 @@
+3.14

CMakeLists.txt

@@ -1,150 +1,164 @@
-cmake_minimum_required(VERSION 3.14...3.24)
+cmake_minimum_required(VERSION 3.21)
+
+if(APPLE)
+    message(FATAL_ERROR "This game does not support macOS")
+endif()
+
 project(Cubed LANGUAGES C CXX)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)
 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()
+list(APPEND CMAKE_MODULE_PATH 
+    "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
+    "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules"
+)
 
-find_package(OpenGL REQUIRED)
+include(Dependencies)
 
-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_subdirectory(third_party/glad)
 
-add_library(glad STATIC third_party/glad/src/glad.c)
-target_include_directories(glad PUBLIC third_party/glad/include)
+add_subdirectory(third_party/imgui)
 
-include(FetchContent)
+add_subdirectory(third_party/dr_libs)
 
-if (WIN32)
-    FetchContent_Declare(
-        glfw
-        GIT_REPOSITORY https://github.com/glfw/glfw.git
-        GIT_TAG 3.4  
+add_executable(${PROJECT_NAME})
+
+add_subdirectory(src)
+
+file(GLOB_RECURSE PROTO_FILES
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/proto/*.proto
+)
+
+protobuf_generate(
+    TARGET ${PROJECT_NAME}           
+    LANGUAGE cpp         
+    PROTOS ${PROTO_FILES}
+    IMPORT_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/src/proto
+)
+
+configure_file(
+    src/version.hpp.in
+    ${CMAKE_BINARY_DIR}/generated/version.hpp
+    @ONLY
+)
+
+target_compile_options(${PROJECT_NAME}
+    PRIVATE
+        $<$<CONFIG:Debug>:-fno-omit-frame-pointer>
+        $<$<CONFIG:Debug>:-g>
+        #$<$<CONFIG:Debug>:-fsanitize=address>
+        #$<$<CONFIG:Debug>:-fsanitize=thread>
+
+        $<$<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:$<CONFIG:Debug>>:./assets/>"
     )
-
-    set(GLFW_BUILD_DOCS OFF CACHE BOOL "" FORCE)
-    set(GLFW_BUILD_TESTS OFF CACHE BOOL "" FORCE)
-    set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
-    set(GLFW_INSTALL OFF CACHE BOOL "" FORCE)         
-    set(GLFW_VULKAN_STATIC ON CACHE BOOL "" FORCE)     
-    set(GLFW_STATIC ON CACHE BOOL "" FORCE)          
-
-    FetchContent_MakeAvailable(glfw)
-
-    FetchContent_Declare(
-        freetype
-        GIT_REPOSITORY https://gitlab.freedesktop.org/freetype/freetype.git
-        GIT_TAG VER-2-14-3
-    )
-    FetchContent_MakeAvailable(freetype)
-    if(TARGET freetype)
-    add_library(Freetype::Freetype ALIAS freetype)
+else()
+    # Ninja / Makefiles single-configuration generator
+    if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+        target_compile_definitions(${PROJECT_NAME}
+            PRIVATE
+                ASSETS_PATH="${PROJECT_SOURCE_DIR}/assets/"
+        )
+    else()
+        target_compile_definitions(${PROJECT_NAME}
+            PRIVATE
+                ASSETS_PATH="./assets/"
+        )
     endif()
 endif()
 
-FetchContent_Declare(
-    glm
-    GIT_REPOSITORY https://github.com/g-truc/glm.git
-    GIT_TAG 1.0.3 
-    
-)
-FetchContent_MakeAvailable(glm)
-FetchContent_Declare(
-    soil2
-    GIT_REPOSITORY https://github.com/SpartanJ/SOIL2.git
-    GIT_TAG 1.31  
-    
-)
-FetchContent_MakeAvailable(soil2)
 
-set(INCLUDE_DIR ${PROJECT_SOURCE_DIR}/include)
+target_include_directories(${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
 
-add_executable(${PROJECT_NAME}
-    src/main.cpp
-    src/app.cpp
-    src/camera.cpp
-    src/gameplay/chunk.cpp
-    src/gameplay/player.cpp
-    src/gameplay/world.cpp
-    src/input.cpp
-    src/map_table.cpp
-    src/renderer.cpp
-    src/shader.cpp
-    src/texture_manager.cpp
-    src/tools/math_tools.cpp
-    src/tools/shader_tools.cpp
-    src/tools/font.cpp
-    src/tools/log.cpp
-    src/tools/perlin_noise.cpp
-    src/window.cpp
 )
 
-if(CMAKE_BUILD_TYPE STREQUAL "Debug")
-    message(STATUS "Building with AddressSanitizer enabled for target: ${PROJECT_NAME}")
-
-    target_compile_options(${PROJECT_NAME} PRIVATE
-        -fsanitize=address
-        -fno-omit-frame-pointer   
-        -g                        
-    )
-
-    target_link_options(${PROJECT_NAME} PRIVATE
-        -fsanitize=address
-    )
-endif()
-
-target_include_directories(${PROJECT_NAME} PUBLIC ${INCLUDE_DIR})
 
 target_link_libraries(${PROJECT_NAME}
     PRIVATE
-        glfw                                   
+        SDL3::SDL3                                 
         glad
         glm::glm
         OpenGL::GL
         soil2
         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
+        harfbuzz::harfbuzz
+        Opus::Opus
+        $<$<PLATFORM_ID:Windows>:ws2_32>
+
 )
 
-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()
-
-
-add_custom_command(TARGET ${PROJECT_NAME} POST_BUILD
-    COMMAND ${CMAKE_COMMAND} -E copy_directory
-        "${PROJECT_SOURCE_DIR}/src/shaders"
-        "$<TARGET_FILE_DIR:${PROJECT_NAME}>/shaders"
-    COMMENT "Copying shaders to output directory"
-)
+endif()

README.md

@@ -1,2 +1,21 @@
 ## What's it
-A cube game like Minecraft, using C++ and OpenGL.
+A cube game like Minecraft, using C++ and OpenGL.  
+
+## Build Guide  
+### Prerequisites  
+- **CMake** (>= 3.24)
+- **C++ 23** compatible compiler
+### Step 
+1. Clone the repository  
+   ```bash
+   git clone https://github.com/zhenyan121/Cubed.git && cd Cubed
+   ```
+2. Configure with CMake
+   ```bash
+   mkdir build && cd build
+   cmake -G "Ninja" ..
+   ```
+3. Build the project  
+   ```bash
+   ninja
+   ```

assets/data/block/air.toml

@@ -0,0 +1,11 @@
+id = 0
+is_blend = false
+is_cross_plane = false
+is_discard = true
+is_gas = true
+is_liquid = false
+is_passable = true
+is_transitional = false
+is_transparent = true
+name = 'air'
+roughness = 1.0

assets/data/block/dirt.toml

@@ -0,0 +1,11 @@
+id = 2
+is_blend = false
+is_cross_plane = false
+is_discard = false
+is_gas = false
+is_liquid = false
+is_passable = false
+is_transitional = true
+is_transparent = false
+name = 'dirt'
+roughness = 1.0

assets/data/block/grass.toml

@@ -0,0 +1,11 @@
+id = 9
+is_blend = false
+is_cross_plane = true
+is_discard = true
+is_gas = false
+is_liquid = false
+is_passable = true
+is_transitional = false
+is_transparent = true
+name = 'grass'
+roughness = 0.9

assets/data/block/grass_block.toml

@@ -0,0 +1,11 @@
+id = 1
+is_blend = false
+is_cross_plane = false
+is_discard = false
+is_gas = false
+is_liquid = false
+is_passable = false
+is_transitional = true
+is_transparent = false
+name = 'grass_block'
+roughness = 0.9

assets/data/block/leaf.toml

@@ -0,0 +1,11 @@
+id = 6
+is_blend = false
+is_cross_plane = false
+is_discard = true
+is_gas = false
+is_liquid = false
+is_passable = false
+is_transitional = false
+is_transparent = true
+name = 'leaf'
+roughness = 0.7

assets/data/block/log.toml

@@ -0,0 +1,11 @@
+id = 5
+is_blend = false
+is_cross_plane = false
+is_discard = false
+is_gas = false
+is_liquid = false
+is_passable = false
+is_transitional = false
+is_transparent = false
+name = 'log'
+roughness = 0.7

assets/data/block/sand.toml

@@ -0,0 +1,11 @@
+id = 4
+is_blend = false
+is_cross_plane = false
+is_discard = false
+is_gas = false
+is_liquid = false
+is_passable = false
+is_transitional = true
+is_transparent = false
+name = 'sand'
+roughness = 0.8

assets/data/block/snowy_grass_block.toml

@@ -0,0 +1,11 @@
+id = 8
+is_blend = false
+is_cross_plane = false
+is_discard = false
+is_gas = false
+is_liquid = false
+is_passable = false
+is_transitional = true
+is_transparent = false
+name = 'snowy_grass_block'
+roughness = 0.9

assets/data/block/stone.toml

@@ -0,0 +1,11 @@
+id = 3
+is_blend = false
+is_cross_plane = false
+is_discard = false
+is_gas = false
+is_liquid = false
+is_passable = false
+is_transitional = true
+is_transparent = false
+name = 'stone'
+roughness = 0.75

assets/data/block/template.toml

@@ -0,0 +1,11 @@
+name = "template"
+id = 0
+is_liquid = false
+is_gas = false
+is_passable = false
+is_cross_plane = false
+is_transparent = false
+is_discard = false
+is_blend = false
+is_transitional = false
+roughness = 1.0

assets/data/block/water.toml

@@ -0,0 +1,11 @@
+id = 7
+is_blend = true
+is_cross_plane = false
+is_discard = false
+is_gas = false
+is_liquid = true
+is_passable = true
+is_transitional = false
+is_transparent = true
+name = 'water'
+roughness = 0.02

assets/lang/en_US.json

@@ -0,0 +1,39 @@
+{
+    "menu.settings": "Settings",
+    "menu.main.host_game": "Host Game",
+    "menu.main.join_game": "Join Game",
+    "menu.main.credits": "Credits",
+    "menu.main.quit": "Quit",
+    "menu.main.player_name": "Player: {name}",
+    "menu.main.cubed_version": "Cubed: {version}",
+    "menu.pause.pause_menu": "Pause Menu",
+    "menu.pause.back_to_game": "Back To Game",
+    "menu.pause.return_to_main_menu": "Return to Menu",
+    "button.done": "Done",
+    "button.return": "Return",
+    "settings.title": "Settings",
+    "settings.fov": "Fov: {fov}",
+    "settings.mouse_sensitivity": "Sensitivity: {sensitivity}",
+    "settings.distance": "Distance: {distance}",
+    "settings.music_volume": "Music: {music}",
+    "settings.sfx_volume": "SFX: {sfx}",
+    "settings.player_voice": "Player Voice: {volume}",
+    "settings.fullscreen": "fullscreen: {state}",
+    "settings.aniso": "Aniso: {aniso}",
+    "settings.vsync": "V-Sync: {state}",
+    "settings.language": "Language: {lang}",
+    "settings.restart_game_info": "You need to restart the game to apply this changes.",
+    "settings.voice_input": "Voice Input: {type}",
+    "voice_input.ptt": "PTT",
+    "voice_input.always": "always",
+    "common.on": "on",
+    "common.off": "off",
+    "hostgame.create_a_new_world": "Create A New World",
+    "hostgame.world_seed": "World Seed",
+    "hostgame.port": "Port",
+    "hostgame.create_world": "Create World",
+    "joingame.join_a_world": "Join A World",
+    "joingame.server_ip": "Server Ip",
+    "joingame.join_world": "Join World",
+    "error.disable_voice": "Server Disable Voice Chat"
+}

assets/lang/zh_CN.json

@@ -0,0 +1,39 @@
+{
+    "menu.settings": "设置",
+    "menu.main.host_game": "创建游戏",
+    "menu.main.join_game": "加入游戏",
+    "menu.main.credits": "制作人员",
+    "menu.main.quit": "退出",
+    "menu.main.player_name": "玩家：{name}",
+    "menu.main.cubed_version": "Cubed：{version}",
+    "menu.pause.pause_menu": "暂停菜单",
+    "menu.pause.back_to_game": "返回游戏",
+    "menu.pause.return_to_main_menu": "返回主菜单",
+    "button.done": "完成",
+    "button.return": "返回",
+    "settings.title": "设置",
+    "settings.fov": "视野：{fov}",
+    "settings.mouse_sensitivity": "灵敏度：{sensitivity}",
+    "settings.distance": "距离：{distance}",
+    "settings.music_volume": "音乐：{music}",
+    "settings.sfx_volume": "音效：{sfx}",
+    "settings.player_voice": "玩家语音：{volume}",
+    "settings.fullscreen": "全屏：{state}",
+    "settings.aniso": "各向异性过滤：{aniso}",
+    "settings.vsync": "垂直同步: {state}",
+    "settings.language": "语言: {lang}",
+    "settings.restart_game_info": "您需要重启游戏以应用这些更改。",
+    "settings.voice_input": "语音输入: {type}",
+    "voice_input.ptt": "按键通话",
+    "voice_input.always": "始终",
+    "common.on": "开",
+    "common.off": "关",
+    "hostgame.create_a_new_world": "创建新世界",
+    "hostgame.world_seed": "世界种子",
+    "hostgame.port": "端口",
+    "hostgame.create_world": "创建世界",
+    "joingame.join_a_world": "加入世界",
+    "joingame.server_ip": "服务器IP",
+    "joingame.join_world": "加入世界",
+    "error.disable_voice": "服务器已禁用语音聊天"
+}

assets/licenses/OFL-1.1.txt

@@ -0,0 +1,90 @@
+The SIL Open Font License version 1.1 is copied below, and is also
+available with a FAQ at http://scripts.sil.org/OFL.
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded, 
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.

assets/licenses/OPENAL_SOFT_LICENSE.txt

@@ -0,0 +1,437 @@
+                  GNU LIBRARY GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1991 Free Software Foundation, Inc.
+ 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+[This is the first released version of the library GPL.  It is
+ numbered 2 because it goes with version 2 of the ordinary GPL.]
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+Licenses are intended to guarantee your freedom to share and change
+free software--to make sure the software is free for all its users.
+
+  This license, the Library General Public License, applies to some
+specially designated Free Software Foundation software, and to any
+other libraries whose authors decide to use it.  You can use it for
+your libraries, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if
+you distribute copies of the library, or if you modify it.
+
+  For example, if you distribute copies of the library, whether gratis
+or for a fee, you must give the recipients all the rights that we gave
+you.  You must make sure that they, too, receive or can get the source
+code.  If you link a program with the library, you must provide
+complete object files to the recipients so that they can relink them
+with the library, after making changes to the library and recompiling
+it.  And you must show them these terms so they know their rights.
+
+  Our method of protecting your rights has two steps: (1) copyright
+the library, and (2) offer you this license which gives you legal
+permission to copy, distribute and/or modify the library.
+
+  Also, for each distributor's protection, we want to make certain
+that everyone understands that there is no warranty for this free
+library.  If the library is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original
+version, so that any problems introduced by others will not reflect on
+the original authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that companies distributing free
+software will individually obtain patent licenses, thus in effect
+transforming the program into proprietary software.  To prevent this,
+we have made it clear that any patent must be licensed for everyone's
+free use or not licensed at all.
+
+  Most GNU software, including some libraries, is covered by the ordinary
+GNU General Public License, which was designed for utility programs.  This
+license, the GNU Library General Public License, applies to certain
+designated libraries.  This license is quite different from the ordinary
+one; be sure to read it in full, and don't assume that anything in it is
+the same as in the ordinary license.
+
+  The reason we have a separate public license for some libraries is that
+they blur the distinction we usually make between modifying or adding to a
+program and simply using it.  Linking a program with a library, without
+changing the library, is in some sense simply using the library, and is
+analogous to running a utility program or application program.  However, in
+a textual and legal sense, the linked executable is a combined work, a
+derivative of the original library, and the ordinary General Public License
+treats it as such.
+
+  Because of this blurred distinction, using the ordinary General
+Public License for libraries did not effectively promote software
+sharing, because most developers did not use the libraries.  We
+concluded that weaker conditions might promote sharing better.
+
+  However, unrestricted linking of non-free programs would deprive the
+users of those programs of all benefit from the free status of the
+libraries themselves.  This Library General Public License is intended to
+permit developers of non-free programs to use free libraries, while
+preserving your freedom as a user of such programs to change the free
+libraries that are incorporated in them.  (We have not seen how to achieve
+this as regards changes in header files, but we have achieved it as regards
+changes in the actual functions of the Library.)  The hope is that this
+will lead to faster development of free libraries.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.  Pay close attention to the difference between a
+"work based on the library" and a "work that uses the library".  The
+former contains code derived from the library, while the latter only
+works together with the library.
+
+  Note that it is possible for a library to be covered by the ordinary
+General Public License rather than by this special one.
+
+                  GNU LIBRARY GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License Agreement applies to any software library which
+contains a notice placed by the copyright holder or other authorized
+party saying it may be distributed under the terms of this Library
+General Public License (also called "this License").  Each licensee is
+addressed as "you".
+
+  A "library" means a collection of software functions and/or data
+prepared so as to be conveniently linked with application programs
+(which use some of those functions and data) to form executables.
+
+  The "Library", below, refers to any such software library or work
+which has been distributed under these terms.  A "work based on the
+Library" means either the Library or any derivative work under
+copyright law: that is to say, a work containing the Library or a
+portion of it, either verbatim or with modifications and/or translated
+straightforwardly into another language.  (Hereinafter, translation is
+included without limitation in the term "modification".)
+
+  "Source code" for a work means the preferred form of the work for
+making modifications to it.  For a library, complete source code means
+all the source code for all modules it contains, plus any associated
+interface definition files, plus the scripts used to control compilation
+and installation of the library.
+
+  Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running a program using the Library is not restricted, and output from
+such a program is covered only if its contents constitute a work based
+on the Library (independent of the use of the Library in a tool for
+writing it).  Whether that is true depends on what the Library does
+and what the program that uses the Library does.
+  
+  1. You may copy and distribute verbatim copies of the Library's
+complete source code as you receive it, in any medium, provided that
+you conspicuously and appropriately publish on each copy an
+appropriate copyright notice and disclaimer of warranty; keep intact
+all the notices that refer to this License and to the absence of any
+warranty; and distribute a copy of this License along with the
+Library.
+
+  You may charge a fee for the physical act of transferring a copy,
+and you may at your option offer warranty protection in exchange for a
+fee.
+
+  2. You may modify your copy or copies of the Library or any portion
+of it, thus forming a work based on the Library, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) The modified work must itself be a software library.
+
+    b) You must cause the files modified to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    c) You must cause the whole of the work to be licensed at no
+    charge to all third parties under the terms of this License.
+
+    d) If a facility in the modified Library refers to a function or a
+    table of data to be supplied by an application program that uses
+    the facility, other than as an argument passed when the facility
+    is invoked, then you must make a good faith effort to ensure that,
+    in the event an application does not supply such function or
+    table, the facility still operates, and performs whatever part of
+    its purpose remains meaningful.
+
+    (For example, a function in a library to compute square roots has
+    a purpose that is entirely well-defined independent of the
+    application.  Therefore, Subsection 2d requires that any
+    application-supplied function or table used by this function must
+    be optional: if the application does not supply it, the square
+    root function must still compute square roots.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Library,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Library, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote
+it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Library.
+
+In addition, mere aggregation of another work not based on the Library
+with the Library (or with a work based on the Library) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may opt to apply the terms of the ordinary GNU General Public
+License instead of this License to a given copy of the Library.  To do
+this, you must alter all the notices that refer to this License, so
+that they refer to the ordinary GNU General Public License, version 2,
+instead of to this License.  (If a newer version than version 2 of the
+ordinary GNU General Public License has appeared, then you can specify
+that version instead if you wish.)  Do not make any other change in
+these notices.
+
+  Once this change is made in a given copy, it is irreversible for
+that copy, so the ordinary GNU General Public License applies to all
+subsequent copies and derivative works made from that copy.
+
+  This option is useful when you wish to copy part of the code of
+the Library into a program that is not a library.
+
+  4. You may copy and distribute the Library (or a portion or
+derivative of it, under Section 2) in object code or executable form
+under the terms of Sections 1 and 2 above provided that you accompany
+it with the complete corresponding machine-readable source code, which
+must be distributed under the terms of Sections 1 and 2 above on a
+medium customarily used for software interchange.
+
+  If distribution of object code is made by offering access to copy
+from a designated place, then offering equivalent access to copy the
+source code from the same place satisfies the requirement to
+distribute the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  5. A program that contains no derivative of any portion of the
+Library, but is designed to work with the Library by being compiled or
+linked with it, is called a "work that uses the Library".  Such a
+work, in isolation, is not a derivative work of the Library, and
+therefore falls outside the scope of this License.
+
+  However, linking a "work that uses the Library" with the Library
+creates an executable that is a derivative of the Library (because it
+contains portions of the Library), rather than a "work that uses the
+library".  The executable is therefore covered by this License.
+Section 6 states terms for distribution of such executables.
+
+  When a "work that uses the Library" uses material from a header file
+that is part of the Library, the object code for the work may be a
+derivative work of the Library even though the source code is not.
+Whether this is true is especially significant if the work can be
+linked without the Library, or if the work is itself a library.  The
+threshold for this to be true is not precisely defined by law.
+
+  If such an object file uses only numerical parameters, data
+structure layouts and accessors, and small macros and small inline
+functions (ten lines or less in length), then the use of the object
+file is unrestricted, regardless of whether it is legally a derivative
+work.  (Executables containing this object code plus portions of the
+Library will still fall under Section 6.)
+
+  Otherwise, if the work is a derivative of the Library, you may
+distribute the object code for the work under the terms of Section 6.
+Any executables containing that work also fall under Section 6,
+whether or not they are linked directly with the Library itself.
+
+  6. As an exception to the Sections above, you may also compile or
+link a "work that uses the Library" with the Library to produce a
+work containing portions of the Library, and distribute that work
+under terms of your choice, provided that the terms permit
+modification of the work for the customer's own use and reverse
+engineering for debugging such modifications.
+
+  You must give prominent notice with each copy of the work that the
+Library is used in it and that the Library and its use are covered by
+this License.  You must supply a copy of this License.  If the work
+during execution displays copyright notices, you must include the
+copyright notice for the Library among them, as well as a reference
+directing the user to the copy of this License.  Also, you must do one
+of these things:
+
+    a) Accompany the work with the complete corresponding
+    machine-readable source code for the Library including whatever
+    changes were used in the work (which must be distributed under
+    Sections 1 and 2 above); and, if the work is an executable linked
+    with the Library, with the complete machine-readable "work that
+    uses the Library", as object code and/or source code, so that the
+    user can modify the Library and then relink to produce a modified
+    executable containing the modified Library.  (It is understood
+    that the user who changes the contents of definitions files in the
+    Library will not necessarily be able to recompile the application
+    to use the modified definitions.)
+
+    b) Accompany the work with a written offer, valid for at
+    least three years, to give the same user the materials
+    specified in Subsection 6a, above, for a charge no more
+    than the cost of performing this distribution.
+
+    c) If distribution of the work is made by offering access to copy
+    from a designated place, offer equivalent access to copy the above
+    specified materials from the same place.
+
+    d) Verify that the user has already received a copy of these
+    materials or that you have already sent this user a copy.
+
+  For an executable, the required form of the "work that uses the
+Library" must include any data and utility programs needed for
+reproducing the executable from it.  However, as a special exception,
+the source code distributed need not include anything that is normally
+distributed (in either source or binary form) with the major
+components (compiler, kernel, and so on) of the operating system on
+which the executable runs, unless that component itself accompanies
+the executable.
+
+  It may happen that this requirement contradicts the license
+restrictions of other proprietary libraries that do not normally
+accompany the operating system.  Such a contradiction means you cannot
+use both them and the Library together in an executable that you
+distribute.
+
+  7. You may place library facilities that are a work based on the
+Library side-by-side in a single library together with other library
+facilities not covered by this License, and distribute such a combined
+library, provided that the separate distribution of the work based on
+the Library and of the other library facilities is otherwise
+permitted, and provided that you do these two things:
+
+    a) Accompany the combined library with a copy of the same work
+    based on the Library, uncombined with any other library
+    facilities.  This must be distributed under the terms of the
+    Sections above.
+
+    b) Give prominent notice with the combined library of the fact
+    that part of it is a work based on the Library, and explaining
+    where to find the accompanying uncombined form of the same work.
+
+  8. You may not copy, modify, sublicense, link with, or distribute
+the Library except as expressly provided under this License.  Any
+attempt otherwise to copy, modify, sublicense, link with, or
+distribute the Library is void, and will automatically terminate your
+rights under this License.  However, parties who have received copies,
+or rights, from you under this License will not have their licenses
+terminated so long as such parties remain in full compliance.
+
+  9. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Library or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Library (or any work based on the
+Library), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Library or works based on it.
+
+  10. Each time you redistribute the Library (or any work based on the
+Library), the recipient automatically receives a license from the
+original licensor to copy, distribute, link with or modify the Library
+subject to these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  11. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Library at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Library by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Library.
+
+If any portion of this section is held invalid or unenforceable under any
+particular circumstance, the balance of the section is intended to apply,
+and the section as a whole is intended to apply in other circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  12. If the distribution and/or use of the Library is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Library under this License may add
+an explicit geographical distribution limitation excluding those countries,
+so that distribution is permitted only in or among countries not thus
+excluded.  In such case, this License incorporates the limitation as if
+written in the body of this License.
+
+  13. The Free Software Foundation may publish revised and/or new
+versions of the Library General Public License from time to time.
+Such new versions will be similar in spirit to the present version,
+but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Library
+specifies a version number of this License which applies to it and
+"any later version", you have the option of following the terms and
+conditions either of that version or of any later version published by
+the Free Software Foundation.  If the Library does not specify a
+license version number, you may choose any version ever published by
+the Free Software Foundation.
+
+  14. If you wish to incorporate parts of the Library into other free
+programs whose distribution conditions are incompatible with these,
+write to the author to ask for permission.  For software which is
+copyrighted by the Free Software Foundation, write to the Free
+Software Foundation; we sometimes make exceptions for this.  Our
+decision will be guided by the two goals of preserving the free status
+of all derivatives of our free software and of promoting the sharing
+and reuse of software generally.
+
+                            NO WARRANTY
+
+  15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
+WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
+EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
+OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
+KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
+LIBRARY IS WITH YOU.  SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
+THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
+AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
+FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
+CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
+LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
+RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
+FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
+SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+                     END OF TERMS AND CONDITIONS

assets/shaders/billboard_f_shader.glsl

@@ -2,8 +2,10 @@
 
 out vec4 frag_color;
 
+uniform vec3 color;
+
 void main(void) {
     
-    frag_color = vec4(0.529, 0.808, 0.922, 1.0);
+    frag_color = vec4(color, 1.0);
 
 }

assets/shaders/block_accumulation_f_shader.glsl

@@ -0,0 +1,103 @@
+#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 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));
+    
+    return a * clamp(intermediate, 1e-2, 3e2);
+}
+
+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;
+    }
+   
+    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;
+
+
+    float w = weight(v_depth, alpha);
+
+    accum = vec4(color.rgb * alpha * w, alpha * w);
+
+    reveal = alpha;
+}

assets/shaders/block_accumulation_v_shader.glsl

@@ -0,0 +1,30 @@
+#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;
+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);
+    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_composite_f_shader.glsl

@@ -0,0 +1,19 @@
+#version 460
+
+uniform sampler2D u_accumTex;
+uniform sampler2D u_revealTex;
+in vec2 TexCoord;
+out vec4 FragColor;
+
+void main() {
+    vec4 a = texture(u_accumTex, TexCoord);
+    float r = texture(u_revealTex, TexCoord).r;
+
+    if (a.a < 1e-4) discard;
+
+    vec3 color = a.rgb / max(a.a, 1e-5);
+    float transmittance = r;
+    float opacity = 1.0 - transmittance;
+
+    FragColor = vec4(color * opacity, opacity);
+}

assets/shaders/block_composite_v_shader.glsl

@@ -0,0 +1,11 @@
+#version 460
+
+layout (location = 0) in vec2 pos;
+layout (location = 1) in vec2 texCoord;
+
+out vec2 TexCoord;
+
+void main() {
+    gl_Position = vec4(pos.x, pos.y, 0.0, 1.0);
+    TexCoord = texCoord;
+}

assets/shaders/block_f_shader.glsl

@@ -0,0 +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;
+
+uniform int renderDistance;
+uniform vec3 skyColor;
+
+#include "shadow.glsl"
+#include "normal.glsl"
+
+void main(void) {
+    vec4 objectColor = texture(samp, vec3(tc, tex_layer));
+
+    if (objectColor.a < 0.8) {
+        discard;
+    }
+    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

@@ -0,0 +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) {
+    
+    vec3 sky = computeSkyColor(dir);
+
+    frag_color = vec4(sky, 1.0);
+    
+}

assets/shaders/sky_v_shader.glsl

@@ -0,0 +1,16 @@
+#version 460
+
+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/text_v_shader.glsl

@@ -7,9 +7,9 @@ layout (location = 2) in float layer;
 out vec2 tc;
 flat out int tex_layer;
 uniform mat4 projection;
-
+uniform mat4 mv_matrix;
 void main(void) {
-    gl_Position = projection * vec4(pos, 0.0, 1.0);
+    gl_Position = projection * mv_matrix * vec4(pos, 0.0, 1.0);
     tc = texCoord;
     tex_layer = int(layer);
 }

assets/shaders/under_water_f_shader.glsl

@@ -0,0 +1,111 @@
+#version 460
+
+in vec2 TexCoord;
+in vec3 rayDir;
+
+out vec4 FragColor;
+
+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);  
+
+    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 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);
+
+    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

@@ -0,0 +1,20 @@
+#version 460
+
+layout (location = 0) in vec2 pos;
+layout (location = 1) in vec2 texCoord;
+
+uniform mat4 InverseViewProjection; 
+uniform vec3 cameraPos;
+
+out vec2 TexCoord;
+out vec3 rayDir;
+void main() {
+    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;
+}