feat(player): add configurable fly Y speed

Consolidate multiple phase generation calls into a single gen_chunk() method on Chunk, which handles neighbor generation and ensures thread safety. Simplify World::gen_chunks_internal by using gen_chunk() instead of manual phase orchestration.

.clang-format

@@ -0,0 +1,321 @@
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+  AlignFunctionPointers: false
+  PadOperators:    false
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+  AcrossEmptyLines: false
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+  SplitEmptyRecord: true
+  SplitEmptyNamespace: true
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+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
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+  - foreach
+  - Q_FOREACH
+  - BOOST_FOREACH
+IfMacros:
+  - KJ_IF_MAYBE
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+SpaceBeforeParens: ControlStatements
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+StatementMacros:
+  - Q_UNUSED
+  - QT_REQUIRE_VERSION
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+UseTab:          Never
+VerilogBreakBetweenInstancePorts: true
+WhitespaceSensitiveMacros:
+  - BOOST_PP_STRINGIZE
+  - CF_SWIFT_NAME
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+

.clang-format-ignore

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

.github/workflows/format-check.yml

@@ -0,0 +1,17 @@
+# .github/workflows/format-check.yml
+name: Code Format Check
+
+on: [push, pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  formatting:
+    runs-on: ubuntu-latest
+    container: silkeh/clang:latest   
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run clang-format
+        run: |
+          find src include -name '*.cpp' -o -name '*.h' -print0 | xargs -0 clang-format --dry-run --Werror

.gitignore

@@ -39,4 +39,7 @@ CMakeError.log
 *.swp
 *.swo
 *~
-.DS_Store
+.DS_Store
+assets/config.toml
+.venv/
+pyout/

.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

@@ -58,6 +58,21 @@ if (WIN32)
     if(TARGET freetype)
     add_library(Freetype::Freetype ALIAS freetype)
     endif()
+    set(_BUILD_SHARED_LIBS_SAVED ${BUILD_SHARED_LIBS})
+    set(BUILD_SHARED_LIBS ON)
+
+    FetchContent_Declare(
+    onetbb                           
+    GIT_REPOSITORY https://github.com/uxlfoundation/oneTBB.git
+    GIT_TAG v2023.0.0
+    )
+    set(BUILD_TESTING OFF CACHE BOOL "Build tests" FORCE)
+    set(TBB_TEST OFF CACHE BOOL "Build TBB tests" FORCE)
+    FetchContent_MakeAvailable(onetbb)
+
+    set(BUILD_SHARED_LIBS ${_BUILD_SHARED_LIBS_SAVED})
+    unset(_BUILD_SHARED_LIBS_SAVED)
+
 endif()
 
 FetchContent_Declare(
@@ -74,6 +89,14 @@ FetchContent_Declare(
     
 )
 FetchContent_MakeAvailable(soil2)
+FetchContent_Declare(
+    tomlplusplus
+    GIT_REPOSITORY https://github.com/marzer/tomlplusplus.git
+    GIT_TAG v3.4.0
+)
+FetchContent_MakeAvailable(tomlplusplus)
+
+add_subdirectory(third_party/imgui)
 
 set(INCLUDE_DIR ${PROJECT_SOURCE_DIR}/include)
 
@@ -82,8 +105,11 @@ add_executable(${PROJECT_NAME}
     src/app.cpp
     src/debug_collector.cpp
     src/camera.cpp
+    src/config.cpp
+    src/dev_panel.cpp
     src/gameplay/biome.cpp
     src/gameplay/chunk.cpp
+    src/gameplay/chunk_generator.cpp
     src/gameplay/player.cpp
     src/gameplay/tree.cpp
     src/gameplay/world.cpp
@@ -99,20 +125,34 @@ add_executable(${PROJECT_NAME}
     src/tools/perlin_noise.cpp
     src/ui/text.cpp
     src/window.cpp
+    src/gameplay/builders/biome_builder.cpp
+    src/gameplay/builders/plain_builder.cpp
+    src/gameplay/builders/mountain_builder.cpp
+    src/gameplay/builders/river_builder.cpp
+    src/gameplay/builders/desert_builder.cpp
+    src/gameplay/builders/forest_builder.cpp
+    src/gameplay/cave_carver.cpp
+    src/gameplay/cave_path.cpp
+    src/gameplay/builders/snowy_plain_builder.cpp
+    src/gameplay/river_worm.cpp
+    src/gameplay/river_path.cpp
+    src/block.cpp
+    src/gameplay/vertex_data.cpp
+    src/gameplay/builders/ocean_builder.cpp
 )
 
 if(CMAKE_BUILD_TYPE STREQUAL "Debug")
     message(STATUS "Building with AddressSanitizer enabled for target: ${PROJECT_NAME}")
 
     target_compile_options(${PROJECT_NAME} PRIVATE
-        -fsanitize=address
+        #-fsanitize=address
         #-fsanitize=thread
         -fno-omit-frame-pointer   
         -g                        
     )
 
     target_link_options(${PROJECT_NAME} PRIVATE
-        -fsanitize=address
+        #-fsanitize=address
         #-fsanitize=thread
     )
 
@@ -136,10 +176,13 @@ target_link_libraries(${PROJECT_NAME}
         OpenGL::GL
         soil2
         Freetype::Freetype
+        tomlplusplus::tomlplusplus
+        imgui
+        tbb
 )
 
 if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
-    target_link_libraries(${PROJECT_NAME} PRIVATE tbb)
+#    target_link_libraries(${PROJECT_NAME} PRIVATE tbb)
 endif()
 
 if (UNIX AND NOT APPLE)
@@ -159,3 +202,19 @@ if (UNIX AND NOT APPLE)
 
     target_compile_options(${PROJECT_NAME} PRIVATE ${EGL_CFLAGS_OTHER} ${Wayland_CFLAGS_OTHER})
 endif()
+
+if (WIN32)
+    foreach(TBB_LIB IN ITEMS tbb tbbmalloc tbbmalloc_proxy)
+        if(TARGET ${TBB_LIB})
+            add_custom_command(
+                TARGET ${PROJECT_NAME} POST_BUILD
+                COMMAND ${CMAKE_COMMAND} -E copy_if_different
+                    $<TARGET_FILE:${TBB_LIB}>
+                    $<TARGET_FILE_DIR:${PROJECT_NAME}>
+                COMMENT "Copying ${TBB_LIB}.dll"
+            )
+        else()
+            message(STATUS "Target ${TBB_LIB} not found, skipping copy")
+        endif()
+    endforeach()
+endif()

assets/data/block/air.toml

@@ -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/shaders/billboard_f_shader.glsl

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

assets/shaders/billboard_v_shader.glsl

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

assets/shaders/block_accumulation_f_shader.glsl

@@ -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

@@ -1,15 +1,363 @@
 #version 460
 
 in vec2 tc;
+in vec3 normal;
+in vec3 vert_pos;
+in vec3 tangent;
+in vec3 bitangent;
+in vec4 FragPosLightSpace;
+in float roughness;
 flat in int tex_layer;
 out vec4 color;
+layout (binding = 0) uniform sampler2D shadowMap;
+layout (binding = 1) uniform sampler2DArray samp;
+layout (binding = 2) uniform sampler2DArray normMap;
+uniform float ambientStrength;
+uniform vec3 sunlightColor;
+uniform vec3 ambientColor;
+uniform vec3 sunlightDir;
+uniform vec3 cameraPos;
+uniform bool shader_on;
+uniform int shadowMode;
+uniform float specularStrength;
+uniform float lightSizeUV; 
+uniform float minRadius;
+uniform float maxRadius;
+uniform bool enablePBR;
+uniform bool flipY;
 
-layout (binding = 0) uniform sampler2DArray samp;
+uniform int renderDistance;
+uniform vec3 skyColor;
+
+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;
+}
+
+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);
+}
 
 void main(void) {
-    color = texture(samp, vec3(tc, tex_layer));
-    if (color.a < 0.5) {
+    vec4 objectColor = texture(samp, vec3(tc, tex_layer));
+
+    if (objectColor.a < 0.8) {
         discard;
     }
-    //color = varyingColor;
+    if (!shader_on) {
+        color = objectColor;
+        return;
+    }
+   
+
+    vec3 lightDir = normalize(-sunlightDir);
+    vec3 norm; 
+    if (enablePBR) {
+        norm = calcNewNormal();
+    } else {
+        norm = normalize(normal);
+    }
+
+
+    vec3 V =
+        normalize(cameraPos - vert_pos);
+
+    vec3 H = 
+        normalize(lightDir + V);
+
+    vec3 ambient = ambientStrength * ambientColor;
+    
+    float diff = max(dot(norm, lightDir), 0.0);
+    
+    vec3 diffuse = diff * sunlightColor;
+    
+    float r =
+        clamp(roughness, 0.0, 1.0);
+
+    float shininess =
+        mix(
+            512.0,
+            4.0,
+            r
+        );
+    float ks =
+        mix(
+            0.8,
+            0.02,
+            r
+        );
+
+    float spec = 0.0;
+
+    if(diff > 0.0)
+    {
+        spec =
+            ks *
+            pow(
+                max(dot(norm,H),0.0),
+                shininess
+            );
+    }
+
+
+
+    
+    vec3 specular = spec * sunlightColor * specularStrength;
+
+    float shadow = ShadowCalculation(FragPosLightSpace, norm, lightDir);  
+    
+    // fog
+    float dist = length(cameraPos - vert_pos);
+    vec4 fogColor = vec4(skyColor, 1.0);
+    float fogStart = renderDistance * 16 * 0.9;
+    float fogEnd   = renderDistance * 16;
+
+    float fogFactor = smoothstep(fogEnd, fogStart, dist);
+    color = vec4((ambient + (1.0 - shadow) * (diffuse)) * objectColor.rgb + (1.0-shadow) * specular * objectColor.rgb, objectColor.a);
+    
+    color = mix(fogColor, color, fogFactor);
+    //color = vec4(normal * 0.5 + 0.5, 1.0);
+    //color = vec4(tangent * 0.5 + 0.5, 1.0);;
+    //color = vec4(norm * 0.5 + 0.5, 1.0);
+    //color = vec4(calcNewNormal(), 1.0);
 }

assets/shaders/block_v_shader.glsl

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

assets/shaders/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_shader.glsl

@@ -0,0 +1,12 @@
+#version 460
+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;
+void main() {
+    tc = texCoord;
+    tex_layer = int(layer);
+    gl_Position = lightSpaceMatrix  * vec4(pos, 1.0);
+}

assets/shaders/sky_f_shader.glsl

@@ -1,9 +1,102 @@
 #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;
+
+
+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;
+}
+
+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;
+}
+
 void main(void) {
     
-    frag_color = vec4(0.529, 0.808, 0.922, 1.0);
+    vec3 sky = computeSkyColor(dir);
 
+    frag_color = vec4(sky, 1.0);
+    //frag_color = vec4(vec3(sunAmount), 1.0);
+    //frag_color = vec4(t,0,0,1);
+    
 }

assets/shaders/sky_v_shader.glsl

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

assets/shaders/under_water_f_shader.glsl

@@ -0,0 +1,137 @@
+#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;
+
+float hash(vec2 p) {
+    return fract(sin(dot(p, vec2(127.1, 311.7))) * 43758.5453);
+}
+
+float noise(vec2 p) {
+    vec2 i = floor(p);
+    vec2 f = fract(p);
+    f = f * f * (3.0 - 2.0 * f);   
+
+    return mix(
+        mix(hash(i), hash(i + vec2(1.0, 0.0)), f.x),
+        mix(hash(i + vec2(0.0, 1.0)), hash(i + vec2(1.0, 1.0)), f.x),
+        f.y
+    );
+}
+
+float fbm(vec2 p) {
+    float value = 0.0;
+    float amp = 0.5;
+    float freq = 1.0;
+    for (int i = 0; i < 4; ++i) {
+        value += amp * noise(p * freq);
+        freq *= 2.0;
+        amp *= 0.5;
+    }
+    return value;
+}
+
+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 +1,315 @@
+#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;
+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);
+}
+
+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;
+}
+
+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;
+}
+
+// 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;
+}

include/Cubed/AABB.hpp

@@ -3,17 +3,12 @@
 
 namespace Cubed {
 
-
 struct AABB {
     glm::vec3 min{0.0f, 0.0f, 0.0f};
     glm::vec3 max{0.0f, 0.0f, 0.0f};
 
-    AABB(glm::vec3 min_point, glm::vec3 max_point):
-        min(min_point),
-        max(max_point)
-    {
-
-    }
+    AABB(glm::vec3 min_point, glm::vec3 max_point)
+        : min(min_point), max(max_point) {}
 
     bool intersects(const AABB& other) const {
         return (min.x <= other.max.x && max.x >= other.min.x) &&
@@ -22,4 +17,4 @@ struct AABB {
     }
 };
 
-}
+} // namespace Cubed

include/Cubed/app.hpp

@@ -1,52 +1,68 @@
 #pragma once
-
-#include <Cubed/camera.hpp>
-#include <Cubed/gameplay/world.hpp>
-#include <Cubed/input.hpp>
-#include <Cubed/renderer.hpp>
-#include <Cubed/texture_manager.hpp>
-#include <Cubed/window.hpp>
+#define GLFW_INCLUDE_NONE
+#include "Cubed/camera.hpp"
+#include "Cubed/dev_panel.hpp"
+#include "Cubed/gameplay/world.hpp"
+#include "Cubed/renderer.hpp"
+#include "Cubed/texture_manager.hpp"
+#include "Cubed/window.hpp"
 namespace Cubed {
 
 class App {
 public:
     App();
     ~App();
-    static void cursor_position_callback(GLFWwindow* window, double xpos, double ypos);
-    static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods);
-    static void mouse_button_callback(GLFWwindow* window, int button, int action, int mods);
+    static void cursor_position_callback(GLFWwindow* window, double xpos,
+                                         double ypos);
+    static void key_callback(GLFWwindow* window, int key, int scancode,
+                             int action, int mods);
+    static void mouse_button_callback(GLFWwindow* window, int button,
+                                      int action, int mods);
     static void window_focus_callback(GLFWwindow* window, int focused);
-    static void window_reshape_callback(GLFWwindow* window, int new_width, int new_height);
-    static void mouse_scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
-
+    static void window_reshape_callback(GLFWwindow* window, int new_width,
+                                        int new_height);
+    static void mouse_scroll_callback(GLFWwindow* window, double xoffset,
+                                      double yoffset);
+    static void cursor_enter_callback(GLFWwindow* window, int entered);
+    static void char_callback(GLFWwindow* window, unsigned int ch);
     static int start_cubed_application(int argc, char** argv);
+
     static unsigned int seed();
     static float delte_time();
     static float get_fps();
+
+    Camera& camera();
+    DevPanel& dev_panel();
+    Renderer& renderer();
+    TextureManager& texture_manager();
+    Window& window();
+    World& world();
+
 private:
     Camera m_camera;
     TextureManager m_texture_manager;
     World m_world;
-    Renderer m_renderer{m_camera, m_world, m_texture_manager};
+    DevPanel m_dev_panel{*this};
+    Renderer m_renderer{m_camera, m_world, m_texture_manager, m_dev_panel};
 
     Window m_window{m_renderer};
-    
+
     inline static double last_time = glfwGetTime();
     inline static double current_time = glfwGetTime();
     inline static double delta_time = 0.0f;
     inline static double fps_time_count = 0.0f;
     inline static int frame_count = 0;
     inline static int fps = 0;
-    
+
     void init();
-    
+
     auto init_camera();
     auto init_texture();
     auto init_world();
-    
+
     void render();
     void run();
     void update();
 };
 
-}
+} // namespace Cubed