Added TravellingSystem for travelling to the next stage. Added incomplete ScreenShake. Ball now starts on pad.

src/game/Game/TravellingSystem.cpp

@@ -0,0 +1,66 @@
+//
+// Created by Adniklastrator on 2015-10-13.
+//
+
+#include "PrecompiledHeader.h"
+#include "Game/TravellingSystem.h"
+
+void dd::Systems::TravellingSystem::Initialize()
+{
+	EVENT_SUBSCRIBE_MEMBER(m_EPause, &TravellingSystem::OnPause);
+    EVENT_SUBSCRIBE_MEMBER(m_EStageCleared, &TravellingSystem::OnStageCleared);
+}
+
+void dd::Systems::TravellingSystem::Update(double dt)
+{
+	if (m_Pause) {
+		return;
+	}
+	if (m_Travelling) {
+		if (m_DistanceTravelled > 12.f) {
+			m_DistanceTravelled = 0;
+			m_Travelling = false;
+			Events::ArrivedAtNewStage e;
+			EventBroker->Publish(e);
+		}
+
+		m_DistanceTravelled += 6.0f * dt;
+	}
+}
+
+void dd::Systems::TravellingSystem::UpdateEntity(double dt, EntityID entity, EntityID parent)
+{
+	if (m_Travelling) {
+		auto transform = m_World->GetComponent<Components::Transform>(entity);
+		if (transform != nullptr) {
+			if (!transform->Sticky) {
+				transform->Position.y -= 6.0f * dt;
+			}
+		}
+		else {
+			transform->Position.y -= 6.0f * dt;
+		}
+	}
+}
+
+bool dd::Systems::TravellingSystem::OnPause(const dd::Events::Pause &event)
+{
+	if (event.Type != "TravellingSystem" && event.Type != "All") {
+		return false;
+	}
+
+    if (IsPaused()) {
+        SetPause(false);
+    } else {
+        SetPause(true);
+    }
+    return true;
+}
+
+bool dd::Systems::TravellingSystem::OnStageCleared(const dd::Events::StageCleared &event)
+{
+	if (event.ClearedStage < 5) {
+		m_Travelling = true;
+	}
+	return true;
+}