ADD: Basic AnimationSystem

CMakeLists.txt

@@ -192,6 +192,14 @@ add_executable(Dicewars_Siedler src/main.cpp
         src/engine/renderer/components/WorldSpriteRenderingData.h
         src/engine/renderer/shaders/WorldSpriteShader.cpp
         src/engine/renderer/shaders/WorldSpriteShader.h
+        src/engine/core/animations/AnimationCurve.h
+        src/engine/core/animations/AnimationTrack.h
+        src/engine/core/animations/AnimationComponent.cpp
+        src/engine/core/animations/AnimationComponent.h
+        src/engine/core/animations/AnimationSystem.cpp
+        src/engine/core/animations/AnimationSystem.h
+        src/engine/core/EngineTime.cpp
+        src/engine/core/EngineTime.h
 )
 
 target_compile_options(Dicewars_Siedler PRIVATE

src/engine/core/Application.cpp

@@ -4,11 +4,19 @@
 
 #include "Application.h"
 
+#include "EngineTime.h"
 #include "../layer/Layer.h"
 #include "../platform/glfw/InputManager.h"
 
 Application* Application::instance = nullptr;
 
+void Application::updateTime() {
+    const auto now = static_cast<float>(glfwGetTime());
+    EngineTime::deltaTime = now - lastFrame;
+    EngineTime::totalTime += EngineTime::deltaTime;
+    lastFrame = now;
+}
+
 void Application::pushLayer(Layer* layer) {
     layers.push_back(layer);
     layer->onAttach();
@@ -34,6 +42,7 @@ Application::~Application()
 void Application::run() {
     while (!window->shouldClose())
     {
+        updateTime();
         for (Layer* layer : layers)
         {
             layer->onUpdate();

src/engine/core/Application.h

@@ -34,6 +34,10 @@ private:
     std::vector<Layer*> layers;
     EventBus eventBus;
 
+    void updateTime();
+
+    float lastFrame;
+
 protected:
     void pushLayer(Layer* layer);
 };

src/engine/core/EngineTime.cpp

@@ -0,0 +1,8 @@
+//
+// Created by sebastian on 14.02.26.
+//
+
+#include "EngineTime.h"
+
+float EngineTime::deltaTime = 0.0f;
+float EngineTime::totalTime = 0.0f;

src/engine/core/EngineTime.h

@@ -0,0 +1,16 @@
+//
+// Created by sebastian on 14.02.26.
+//
+
+#ifndef DICEWARS_SIEDLER_ENGINETIME_H
+#define DICEWARS_SIEDLER_ENGINETIME_H
+
+
+class EngineTime {
+public:
+    static float deltaTime;
+    static float totalTime;
+};
+
+
+#endif //DICEWARS_SIEDLER_ENGINETIME_H

src/engine/core/animations/AnimationComponent.cpp

@@ -0,0 +1,5 @@
+//
+// Created by sebastian on 14.02.26.
+//
+
+#include "AnimationComponent.h"

src/engine/core/animations/AnimationComponent.h

@@ -0,0 +1,17 @@
+//
+// Created by sebastian on 14.02.26.
+//
+
+#ifndef DICEWARS_SIEDLER_ANIMATIONCOMPONENT_H
+#define DICEWARS_SIEDLER_ANIMATIONCOMPONENT_H
+#include "AnimationTrack.h"
+#include "../ECS/Component.h"
+
+
+class AnimationComponent : public Component {
+public:
+    std::vector<AnimationTrack> tracks;
+};
+
+
+#endif //DICEWARS_SIEDLER_ANIMATIONCOMPONENT_H

src/engine/core/animations/AnimationCurve.h

@@ -0,0 +1,52 @@
+//
+// Created by sebastian on 14.02.26.
+//
+
+#ifndef DICEWARS_SIEDLER_ANIMATIONCURVE_H
+#define DICEWARS_SIEDLER_ANIMATIONCURVE_H
+#include <cmath>
+
+enum class CurveType {
+    Sine,
+    Triangle,
+    SmoothStep,
+    EaseInOut,
+    Constant
+};
+
+struct AnimationCurve {
+    CurveType type = CurveType::Sine;
+    float amplitude = 1.0f;
+    float frequency = 1.0f;
+    float phase = 0.0f;
+    float offset = 0.0f;
+
+    float evaluate(float time) const {
+        float t = time * frequency + phase;
+
+        switch (type) {
+            case CurveType::Sine:
+                return offset + std::sin(t) * amplitude;
+
+            case CurveType::Triangle:
+                return offset + (2.0f * amplitude / M_PI) * std::asin(std::sin(t));
+
+            case CurveType::SmoothStep: {
+                float x = 0.5f + 0.5f * std::sin(t);
+                return offset + amplitude * (x * x * (3.0f - 2.0f * x));
+            }
+
+            case CurveType::EaseInOut: {
+                float x = 0.5f + 0.5f * std::sin(t);
+                return offset + amplitude * (1.0f - std::cos(x * M_PI));
+            }
+
+            case CurveType::Constant:
+                return offset;
+        }
+        return offset;
+    }
+};
+
+
+#endif //DICEWARS_SIEDLER_ANIMATIONCURVE_H

src/engine/core/animations/AnimationSystem.cpp

@@ -0,0 +1,17 @@
+//
+// Created by sebastian on 14.02.26.
+//
+
+#include "AnimationSystem.h"
+
+#include "AnimationComponent.h"
+
+void AnimationSystem::update(EntityManager &em, const float time) {
+    for (EntityID e : em.getAllEntities()) {
+        auto anim = em.getComponent<AnimationComponent>(e);
+        if (!anim) continue;
+        for (const auto& track : anim->tracks) {
+            track.update(time);
+        }
+    }
+}

src/engine/core/animations/AnimationSystem.h

@@ -0,0 +1,16 @@
+//
+// Created by sebastian on 14.02.26.
+//
+
+#ifndef DICEWARS_SIEDLER_ANIMATIONSYSTEM_H
+#define DICEWARS_SIEDLER_ANIMATIONSYSTEM_H
+#include "../ECS/EntityManager.h"
+
+
+class AnimationSystem {
+public:
+    static void update(EntityManager& em, float time);
+};
+
+
+#endif //DICEWARS_SIEDLER_ANIMATIONSYSTEM_H

src/engine/core/animations/AnimationTrack.h

@@ -0,0 +1,26 @@
+//
+// Created by sebastian on 14.02.26.
+//
+
+#ifndef DICEWARS_SIEDLER_ANIMATIONTRACK_H
+#define DICEWARS_SIEDLER_ANIMATIONTRACK_H
+#include <cstdio>
+#include <functional>
+
+#include "AnimationCurve.h"
+using AnimationTarget = std::function<void(float)>;
+
+struct AnimationTrack {
+    AnimationCurve curve;
+    AnimationTarget target;
+    bool enabled = true;
+
+    void update(float time) const {
+        if (!enabled) return;
+        const float value = curve.evaluate(time);
+        target(value);
+    }
+};
+
+
+#endif //DICEWARS_SIEDLER_ANIMATIONTRACK_H

src/game/GameLayer.cpp

@@ -4,6 +4,9 @@
 
 #include "GameLayer.h"
 
+#include "../engine/core/EngineTime.h"
+#include "../engine/core/animations/AnimationComponent.h"
+#include "../engine/core/animations/AnimationSystem.h"
 #include "../engine/core/ECS/ModelStateComponent.h"
 #include "../engine/core/ECS/WorldSpriteComponent.h"
 #include "../engine/platform/glfw/InputManager.h"
@@ -59,9 +62,23 @@ void GameLayer::onAttach()
 
     TransformComponent transformComponent(glm::vec3(0,0,0), glm::vec3(0), 1.0f);
     testEntity = BuildingFactory::create(*entityManager, TemporaryBuildingDefinitionFactory::createForestHutDefinition(), transformComponent, 0, 0);
-    auto worldspriteComponent = WorldSpriteComponent();
-    worldspriteComponent.texture = std::make_shared<ModelTexture>(modelTexture);
-    entityManager->addComponent(testEntity, std::make_shared<WorldSpriteComponent>(worldspriteComponent));
+    auto worldSpritePtr = std::make_shared<WorldSpriteComponent>();
+    worldSpritePtr->texture = std::make_shared<ModelTexture>(modelTexture);
+    entityManager->addComponent(testEntity, worldSpritePtr);
+
+    auto anim = std::make_shared<AnimationComponent>();
+
+    float baseY = worldSpritePtr->offset.y;
+
+    anim->tracks.push_back({
+        AnimationCurve{CurveType::Sine, 0.3f, 5.f},
+        [worldSpritePtr, baseY](float v) {
+            worldSpritePtr->offset.y = baseY + v;
+        }
+    });
+
+    entityManager->addComponent(testEntity, anim);
+
 
     events.subscribe<TurnChangedEvent>([this](const TurnChangedEvent& event) {
          ProducingSystem::onTurnEnded(*entityManager);
@@ -98,7 +115,7 @@ void GameLayer::onUpdate()
         modelStateComponent->params["fillRatio"] += 0.1f;
     }
 
-
+    AnimationSystem::update(*entityManager, EngineTime::totalTime);
     camera->move(moveDir, 0.5f);
     tileHighlightSystem->update(*entityManager, *mousePicker, *camera);
     buildingPlacementSystem->update(*entityManager, *gameMode, 0, *turnState);