Fade in/out should now work with models and sprites

src/Game/Systems/FadeSystem.cpp

@@ -0,0 +1,37 @@
+#include "Systems/FadeSystem.h"
+
+void FadeSystem::UpdateComponent(EntityWrapper& entity, ComponentWrapper& cFade, double dt)
+{
+    double dTime = dt;
+    if (dTime == 0.0) {
+        return;
+    }
+
+    if (!entity.Valid()) {
+        return;
+    }
+
+    if (!(bool)cFade["Out"]) {
+        dTime *= -1;
+    }
+
+    double fadeTime = cFade["FadeTime"];
+    double& currentTime = cFade["Time"];
+    currentTime += dTime;
+
+    if(currentTime > fadeTime) {
+        currentTime = 0.0;
+    }
+    if(currentTime < 0.0) {
+        currentTime = fadeTime;
+    }
+    double ratio = currentTime/fadeTime;
+
+    if(entity.HasComponent("Model")){
+        ((glm::vec4&)entity["Model"]["Color"]).a = ratio;
+    }
+    if (entity.HasComponent("Sprite")) {
+        ((glm::vec4&)entity["Sprite"]["Color"]).a = ratio;
+
+    }
+}