ADD: Dimming Text

CMakeLists.txt

@@ -326,6 +326,12 @@ if(BUILD_GAME)
             src/game/scenes/main/MainUiLayer.cpp
             src/game/scenes/main/MainUiLayer.h
             src/game/scenes/main/events/QuitEvent.h
+            src/engine/core/gui/uiMain/UiStack.cpp
+            src/engine/core/gui/uiMain/UiStack.h
+            src/engine/core/EngineContext.cpp
+            src/engine/core/EngineContext.h
+            src/engine/core/gui/uiMain/UiConfig.h
+            src/engine/renderer/RenderContext.h
     )
     target_compile_options(Dicewars_Siedler PRIVATE
             -Wall

assets/shaders/textFragmentShader.glsl

@@ -6,8 +6,10 @@ out vec4 outColor;
 
 uniform sampler2D text;
 uniform vec3 textColor;
+uniform float dimFactor;
 
 void main() {
     float alpha = texture(text, pass_texCoords).r;
     outColor = vec4(textColor, alpha);
+    outColor *= dimFactor;
 }

src/engine/core/Application.cpp

@@ -24,7 +24,8 @@ void Application::updateTime() {
 Application::Application()
 {
     instance = this;
-    sceneManager = std::make_unique<SceneManager>();
+    context = std::make_unique<EngineContext>();
+    sceneManager = std::make_unique<SceneManager>(*context.get());
 
     WindowProps window_props = WindowProps();
     window_props.Width = 1280;

src/engine/core/Application.h

@@ -7,6 +7,7 @@
 #include <memory>
 #include <vector>
 
+#include "EngineContext.h"
 #include "Window.h"
 #include "events/EventBus.h"
 #include "inputsOutputs/inputs/Keyboard.h"
@@ -34,6 +35,7 @@ public:
     std::unique_ptr<StateManager> stateManager;
     std::shared_ptr<GameState> gameState;
     std::unique_ptr<SceneManager> sceneManager;
+    std::unique_ptr<EngineContext> context;
 private:
     bool running = true;
     std::unique_ptr<Window> window;

src/engine/core/EngineContext.cpp

@@ -0,0 +1,5 @@
+//
+// Created by sebastian on 25.04.26.
+//
+
+#include "EngineContext.h"

src/engine/core/EngineContext.h

@@ -0,0 +1,18 @@
+//
+// Created by sebastian on 25.04.26.
+//
+
+#ifndef ENGINECONTEXT_H
+#define ENGINECONTEXT_H
+#include "gui/uiMain/UiConfig.h"
+
+
+class EngineContext {
+public:
+    UiConfig uiConfig = UiConfig();
+
+};
+
+
+
+#endif //ENGINECONTEXT_H

src/engine/core/gui/uiMain/UiConfig.h

@@ -0,0 +1,19 @@
+//
+// Created by sebastian on 25.04.26.
+//
+
+#ifndef UICONFIG_H
+#define UICONFIG_H
+#include "json.hpp"
+
+struct UiConfig {
+    float backgroundDim = 0.6f;
+
+    static UiConfig fromJson(const nlohmann::json & j) {
+        UiConfig cfg;
+        cfg.backgroundDim = j.at("backgroundDim").get<float>();
+        return cfg;
+    }
+};
+
+#endif //UICONFIG_H

src/engine/core/gui/uiMain/UiContainer.cpp

@@ -24,6 +24,7 @@ void UiContainer::onUpdate(float x) {
 }
 
 void UiContainer::onCollectRenderData(UiRenderBundle& renderBundle) {
+
     if (backgroundTextureID.has_value()) {
         GUITextureBuilder builder = GUITextureBuilder();
         builder.Foreground(backgroundTextureID.value());

src/engine/core/gui/uiMain/UiStack.cpp

@@ -0,0 +1,25 @@
+//
+// Created by sebastian on 25.04.26.
+//
+
+#include "UiStack.h"
+
+void UiStack::push(std::unique_ptr<UiContainer> panel) {
+    panels.push_back(std::move(panel));
+}
+
+void UiStack::pop() {
+    panels.pop_back();
+}
+
+UiContainer * UiStack::top() {
+    return panels.empty() ? nullptr : panels.back().get();
+}
+
+const std::vector<std::unique_ptr<UiContainer>> & UiStack::getPanels() const {
+    return panels;
+}
+
+bool UiStack::isTop(const UiContainer *panel) const {
+    return !panels.empty() && panels.back().get() == panel;
+}

src/engine/core/gui/uiMain/UiStack.h

@@ -0,0 +1,26 @@
+//
+// Created by sebastian on 25.04.26.
+//
+
+#ifndef UISTACK_H
+#define UISTACK_H
+#include <memory>
+
+#include "UiContainer.h"
+
+
+class UiStack {
+public:
+    void push(std::unique_ptr<UiContainer> panel);
+    void pop();
+    UiContainer* top();
+    const std::vector<std::unique_ptr<UiContainer>>& getPanels() const;
+    bool isTop(const UiContainer* panel) const;
+private:
+    std::vector<std::unique_ptr<UiContainer>> panels;
+
+};
+
+
+
+#endif //UISTACK_H

src/engine/core/scenes/Scene.h

@@ -14,7 +14,7 @@
 class Scene {
 public:
     virtual ~Scene() = default;
-    virtual void onEnter() {} //Layer registrieren
+    virtual void onEnter(EngineContext& ctx) {} //Layer registrieren
     virtual void onExit() {
         for (const auto& layer : layers) {
             layer->onDetach();

src/engine/core/scenes/SceneManager.cpp

@@ -4,7 +4,6 @@
 
 #include "SceneManager.h"
 
-#include "Scene.h"
 #include "spdlog/spdlog.h"
 
 void SceneManager::switchTo(std::unique_ptr<Scene> next, std::function<void()> onLoaded) {
@@ -29,7 +28,7 @@ void SceneManager::update() {
             }
             currentScene = std::move(nextScene);
             nextScene = nullptr;
-            currentScene->onEnter();
+            currentScene->onEnter(ctx);
             assetLoader.stop();
 
             if (onSceneLoaded) {

src/engine/core/scenes/SceneManager.h

@@ -6,11 +6,13 @@
 #define SCENEMANAGER_H
 #include <memory>
 
-#include "../../renderer/loader/async/AssetLoader.h""
-class Scene;
+#include "../../renderer/loader/async/AssetLoader.h"
+#include "../EngineContext.h"
+#include "Scene.h"
 
 class SceneManager {
 public:
+    explicit SceneManager(EngineContext& ctx) : ctx(ctx) {}
     void switchTo(std::unique_ptr<Scene> next, std::function<void()> onLoaded = nullptr);
     void update();
     void render();
@@ -20,6 +22,7 @@ public:
 private:
     std::unique_ptr<Scene> currentScene;
     std::unique_ptr<Scene> nextScene;
+    EngineContext& ctx;
 
     AssetLoader assetLoader;
 

src/engine/core/scenes/SplashScreen.cpp

@@ -14,7 +14,7 @@ std::vector<AssetRequest> SplashScreen::getRequiredAssets() {
     return requests;
 }
 
-void SplashScreen::onEnter() {
+void SplashScreen::onEnter(EngineContext& ctx) {
     addLayer(std::make_unique<SplashScreenLayer>());
 }
 

src/engine/core/scenes/SplashScreen.h

@@ -10,7 +10,7 @@
 class SplashScreen : public Scene {
 public:
     std::vector<AssetRequest> getRequiredAssets() override;
-    void onEnter() override;
+    void onEnter(EngineContext& ctx) override;
     void onExit() override;
 
 };

src/engine/core/scenes/SplashScreenLayer.cpp

@@ -12,7 +12,7 @@
 #include "../gui/uiMain/UiContainer.h"
 #include "spdlog/spdlog.h"
 
-SplashScreenLayer::SplashScreenLayer() {
+SplashScreenLayer::SplashScreenLayer(): progressbar(nullptr) {
     guiRenderer = std::make_unique<GUIRenderer>(Loader::instance());
 }
 

src/engine/core/scenes/SplashScreenLayer.h

@@ -12,7 +12,7 @@
 
 class SplashScreenLayer: public Layer {
 public:
-    SplashScreenLayer();
+    explicit SplashScreenLayer();
     virtual void onRender() override;
     virtual void onUpdate() override;
     virtual void onAttach() override;

src/engine/renderer/RenderContext.h

@@ -0,0 +1,21 @@
+//
+// Created by sebastian on 25.04.26.
+//
+
+#ifndef RENDERCONTEXT_H
+#define RENDERCONTEXT_H
+struct RenderContext {
+    float dimFactor = 1.0f;
+    // später einfach erweiterbar:
+    // float colorTint = 1.0f;
+    // glm::vec4 clipRect = ...;
+
+    static RenderContext Default() {
+        return RenderContext{};
+    }
+
+    static RenderContext Dimmed(float factor) {
+        return RenderContext{ factor };
+    }
+};
+#endif //RENDERCONTEXT_H

src/engine/renderer/TextRenderer.cpp

@@ -9,9 +9,10 @@
 #include "../core/gui/text/Font.h"
 #include "glm/ext/matrix_clip_space.hpp"
 
-void TextRenderer::renderGuiTexts(const std::vector<std::shared_ptr<GUIText>> &texts, const float width, const float height) {
+void TextRenderer::renderGuiTexts(const std::vector<std::shared_ptr<GUIText>> &texts, const float width, const float height, RenderContext& ctx) {
     shader.start();
     shader.loadProjectionMatrix(calculateOrthographicProjectionMatrix(width, height));
+    shader.loadDimFactor(ctx.dimFactor);
     glEnable(GL_BLEND);
     glDisable(GL_DEPTH_TEST);
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

src/engine/renderer/TextRenderer.h

@@ -6,6 +6,7 @@
 #define DICEWARS_SIEDLER_TEXTRENDERER_H
 #include <memory>
 
+#include "RenderContext.h"
 #include "../core/gui/uiComponent/UiText.h"
 #include "loader/Loader.h"
 #include "model/RawModel.h"
@@ -16,12 +17,13 @@
 class TextRenderer {
 public:
     TextRenderer() : textModel(Loader::instance().loadTextModel()) {};
-    void renderGuiTexts(const std::vector<std::shared_ptr<GUIText>> & texts, float width, float height);
+    void renderGuiTexts(const std::vector<std::shared_ptr<GUIText>> & texts, float width, float height, RenderContext& ctx);
     void renderGuiText(const GUIText& text, float width, float height);
-
+    void setDimFactor(const float dimFactor) {this->dimFactor = dimFactor;}
 private:
     TextShader shader;
     TextQuadModel textModel;
+    float dimFactor = 1.0f;
     static glm::mat4 calculateOrthographicProjectionMatrix(float width, float height);
 };
 

src/engine/renderer/shaders/TextShader.cpp

@@ -12,6 +12,10 @@ void TextShader::loadTextColor(glm::vec3 color) {
     ShaderProgram::loadVector(getUniformLocation("textColor"), color);
 }
 
+void TextShader::loadDimFactor(float dimFactor) {
+    ShaderProgram::loadFloat(getUniformLocation("dimFactor"), dimFactor);
+}
+
 
 void TextShader::bindAttributes() const {
     ShaderProgram::bindAttribute(0, "vertices");

src/engine/renderer/shaders/TextShader.h

@@ -14,6 +14,7 @@ public :
     }
     void loadProjectionMatrix(glm::mat4 matrix);
     void loadTextColor(glm::vec3 color);
+    void loadDimFactor(float dimFactor);
 
 protected:
     void bindAttributes() const override;

src/game/UILayer.cpp

@@ -161,5 +161,6 @@ void UILayer::onRender() {
     guiRenderer->render(guis);
 
     auto renderTexts = renderBundle.getGUITexts();
-    textRenderer->renderGuiTexts(renderTexts, Application::getInstance().getWindow().GetWidth(), Application::getInstance().getWindow().GetHeight());
+    RenderContext ctx = RenderContext::Default();
+    textRenderer->renderGuiTexts(renderTexts, Application::getInstance().getWindow().GetWidth(), Application::getInstance().getWindow().GetHeight(), ctx);
 }

src/game/scenes/main/MainMenu.cpp

@@ -6,8 +6,8 @@
 
 #include "MainUiLayer.h"
 
-void MainMenu::onEnter() {
-    addLayer(std::make_unique<MainUiLayer>());
+void MainMenu::onEnter(EngineContext& ctx) {
+    addLayer(std::make_unique<MainUiLayer>(ctx.uiConfig));
 }
 
 void MainMenu::onExit() {

src/game/scenes/main/MainMenu.h

@@ -8,7 +8,7 @@
 
 class MainMenu: public Scene {
 public:
-    void onEnter() override;
+    void onEnter(EngineContext& ctx) override;
     void onExit() override;
     std::vector<AssetRequest> getRequiredAssets() override;
 

src/game/scenes/main/MainUiLayer.cpp

@@ -12,7 +12,7 @@
 void MainUiLayer::onAttach() {
     AssetManager::loadUiTheme("default", "assets/ui/uiTheme.json"); //Todo: Move to AssetLoader
 
-    rootContainer = std::make_unique<UiContainer>();
+    auto rootContainer = std::make_unique<UiContainer>();
     rootContainer->setBackgroundTexture(AssetManager::getTexture("mainCover")->getTextureID());
 
     LayoutStyle btnStyle;
@@ -55,7 +55,8 @@ void MainUiLayer::onAttach() {
             EventBus::getInstance().emit(QuitEvent{});
         }
     });
-
+    uiStack = std::make_unique<UiStack>();
+    uiStack->push(std::move(rootContainer));
 }
 
 void MainUiLayer::onDetach() {
@@ -63,22 +64,34 @@ void MainUiLayer::onDetach() {
 }
 
 void MainUiLayer::onRender() {
-    UiRenderBundle renderBundle;
-    if (rootContainer) {
-        rootContainer->collectRenderData(renderBundle);
+
+    if (uiStack) {
+        for (const auto& panel : uiStack->getPanels()) {
+            RenderContext ctx;
+            if (!uiStack->isTop(panel.get())) {
+                ctx = RenderContext::Default();
+            } else {
+                ctx = RenderContext::Dimmed(uiConfig.backgroundDim);
             }
 
+            UiRenderBundle renderBundle;
+            panel->collectRenderData(renderBundle);
+
             auto guis = renderBundle.getGUITextures();
             guiRenderer->render(guis);
 
             const auto renderTexts = renderBundle.getGUITexts();
             textRenderer->renderGuiTexts(renderTexts, static_cast<float>(Application::getInstance().getWindow().GetWidth()),
-                                 static_cast<float>(Application::getInstance().getWindow().GetHeight()));
+                                         static_cast<float>(Application::getInstance().getWindow().GetHeight()), ctx);
+        }
+    }
 }
 
 void MainUiLayer::onUpdate() {
     Dimensions rootParent {0.0, 0.0, 1.0, 1.0f};
-    rootContainer->uiPositioner.compute(rootParent);
+    for (const auto& panel : uiStack->getPanels()) {
+        panel->uiPositioner.compute(rootParent);
+    }
 
-    rootContainer->update(EngineTime::deltaTime);
+    uiStack->top()->update(EngineTime::deltaTime);
 }

src/game/scenes/main/MainUiLayer.h

@@ -8,19 +8,21 @@
 #include "../../../engine/renderer/GUIRenderer.h"
 #include "../../../engine/renderer/loader/Loader.h"
 #include "../../../engine/core/gui/uiMain/UiContainer.h"
+#include "../../../engine/core/gui/uiMain/UiStack.h"
 #include "../../../engine/renderer/TextRenderer.h"
 
 class MainUiLayer: public Layer {
 public:
-    MainUiLayer(): guiRenderer(std::make_unique<GUIRenderer>(Loader::instance())), textRenderer(std::make_unique<TextRenderer>()) {}
+    explicit MainUiLayer(UiConfig& config): uiConfig(config), guiRenderer(std::make_unique<GUIRenderer>(Loader::instance())), textRenderer(std::make_unique<TextRenderer>()) {}
     void onAttach() override;
     void onDetach() override;
     void onRender() override;
     void onUpdate() override;
 private:
+    UiConfig& uiConfig;
     std::unique_ptr<GUIRenderer> guiRenderer;
     std::unique_ptr<TextRenderer> textRenderer;
-    std::unique_ptr<UiContainer> rootContainer;
+    std::unique_ptr<UiStack> uiStack;
 };