add intro animation

sources/System/IntroAnimation/IntroAnimationSystem.cpp

@@ -0,0 +1,46 @@
+
+#include <algorithm>
+#include "Component/Button/ButtonComponent.hpp"
+#include "Component/Position/PositionComponent.hpp"
+#include "System/IntroAnimation/IntroAnimationSystem.hpp"
+#include "Component/Controllable/ControllableComponent.hpp"
+#include "Entity/Entity.hpp"
+#include "Component/Renderer/Drawable2DComponent.hpp"
+#include <Drawables/2D/Rectangle.hpp>
+
+namespace RAY2D = RAY::Drawables::Drawables2D;
+
+namespace BBM
+{
+	IntroAnimationSystem::IntroAnimationSystem(WAL::Wal &wal)
+		: System(wal), wal(wal)
+	{}
+
+	void IntroAnimationSystem::onFixedUpdate(WAL::ViewEntity<IntroAnimationComponent> &entity)
+	{
+        auto &component = entity.get<IntroAnimationComponent>();
+        auto &scene = wal.getScene();
+
+        switch (component.currentStep)
+        {
+        case IntroAnimationComponent::animationSteps::init:
+            scene->addEntity("white background")
+               .addComponent<Drawable2DComponent, RAY2D::Rectangle>(BBM::Vector2f(), BBM::Vector2f(1920, 1080), WHITE);
+            
+            scene->addEntity("blinking square").addComponent<Drawable2DComponent, RAY2D::Rectangle>(BBM::Vector2f(), BBM::Vector2f(16, 16), WHITE);
+            component.currentStep = IntroAnimationComponent::animationSteps::boxBlinking;
+            break;
+        case IntroAnimationComponent::animationSteps::boxBlinking:
+
+            if ((component.frame / 15) % 2)
+                scene->getEntities()
+            break;
+        
+        }
+        component.frame++;
+	}
+
+	void IntroAnimationSystem::onSelfUpdate(void)
+	{
+	}
+}