Changed System to take World through constructor and store it instead, cause it makes more sense.

src/Game/Systems/HealthSystem.cpp

@@ -1,7 +1,7 @@
 #include "Systems/HealthSystem.h"
 
-HealthSystem::HealthSystem(EventBroker* eventBroker)
-    : System(eventBroker)
+HealthSystem::HealthSystem(World* m_World, EventBroker* eventBroker)
+    : System(m_World, eventBroker)
     , PureSystem("Health")
 {
     //subscribe/listenTo playerdamage,healthpickup events (using the eventBroker)
@@ -9,10 +9,10 @@ HealthSystem::HealthSystem(EventBroker* eventBroker)
     EVENT_SUBSCRIBE_MEMBER(m_EPlayerHealthPickup, &HealthSystem::OnPlayerHealthPickup);
 }
 
-void HealthSystem::UpdateComponent(World* world, EntityWrapper& entity, ComponentWrapper& component, double dt)
+void HealthSystem::UpdateComponent(EntityWrapper& entity, ComponentWrapper& component, double dt)
 {
     //if entityID of health is 9 then the players ID is also 9 (player,health are connected to the same entity)
-    ComponentWrapper player = world->GetComponent(component.EntityID, "Player");
+    ComponentWrapper player = m_World->GetComponent(component.EntityID, "Player");
     double maxHealth = (double)component["MaxHealth"];
 
     //process the DeltaHealthVector and change the entitys health accordingly