Merge remote-tracking branch 'origin/master' into Forward+

# Conflicts:
#	resources/Schema/Types/Entity.xsd

include/Engine/Core/EPlayerDamage.h

@@ -0,0 +1,20 @@
+#ifndef EPlayerDamage_h__
+#define EPlayerDamage_h__
+
+#include "EventBroker.h"
+#include "../Core/Entity.h"
+
+namespace Events
+{
+
+struct PlayerDamage : Event
+{
+    double DamageAmount;
+    EntityID PlayerDamagedID;
+    //optional TypeOfDamage
+    std::string TypeOfDamage;
+};
+
+}
+
+#endif

include/Engine/Core/EPlayerDeath.h

@@ -0,0 +1,20 @@
+#ifndef EPlayerDeath_h__
+#define EPlayerDeath_h__
+
+#include "EventBroker.h"
+#include "../Core/Entity.h"
+
+namespace Events
+{
+
+struct PlayerDeath : Event
+{
+    //KilledBy,KilledByWhat is optional for now. It might be used later in the playerlog-system
+    EntityID KilledBy;
+    EntityID PlayerID;
+    std::string KilledByWhat;
+};
+
+}
+
+#endif

include/Engine/Core/EPlayerHealthPickup.h

@@ -0,0 +1,18 @@
+#ifndef EPlayerHealthPickup_h__
+#define EPlayerHealthPickup_h__
+
+#include "EventBroker.h"
+#include "../Core/Entity.h"
+
+namespace Events
+{
+
+struct PlayerHealthPickup : Event
+{
+    double HealthAmount;
+    EntityID PlayerHealedID;
+};
+
+}
+
+#endif

include/Engine/Core/EventBroker.h

@@ -13,6 +13,8 @@
 	relay = decltype(relay)(std::bind(handler, this, std::placeholders::_1)); \
 	m_EventBroker->Subscribe(relay);
 
+typedef unsigned int EventID;
+
 class EventBroker;
 
 class BaseEventRelay
@@ -31,6 +33,7 @@ public:
     virtual bool Receive(const std::shared_ptr<Event> event) = 0;
 
 protected:
+    EventID m_EventID;
     std::string m_ContextTypeName;
     std::string m_EventTypeName;
     EventBroker* m_Broker;
@@ -95,6 +98,7 @@ public:
 
 private:
     bool m_IsProcessing = false;
+    EventID m_NextEventID = 0;
 
     typedef std::string ContextTypeName_t; // typeid(ContextType).name()
     typedef std::string EventTypeName_t; // typeid(EventType).name()
@@ -103,14 +107,14 @@ private:
     typedef std::unordered_map<ContextTypeName_t, EventRelays_t> ContextRelays_t;
     ContextRelays_t m_ContextRelays;
     std::vector<BaseEventRelay*> m_RelaysToSubscribe;
-    std::vector<BaseEventRelay*> m_RelaysToUnsubscribe;
+    std::vector<std::tuple<EventID, ContextTypeName_t, EventTypeName_t>> m_RelaysToUnsubscribe;
 
     typedef std::list<std::pair<EventTypeName_t, std::shared_ptr<Event>>> EventQueue_t;
     std::shared_ptr<EventQueue_t> m_EventQueueRead;
     std::shared_ptr<EventQueue_t> m_EventQueueWrite;
 
     void subscribeImmediate(BaseEventRelay& relay);
-    void unsubscribeImmediate(BaseEventRelay& relay);
+    void unsubscribeImmediate(std::tuple<EventID, ContextTypeName_t, EventTypeName_t> identifier);
 };
 
 template <typename EventType>

include/Engine/Core/SystemPipeline.h

@@ -14,21 +14,28 @@ public:
     { }
     ~SystemPipeline()
     {
-        for (auto& pair : m_Systems) {
-            delete pair.second;
+        for (UnorderedSystems& group : m_OrderedSystemGroups) {
+            for (auto& pair : group.Systems) {
+                delete pair.second;
+            }
         }
     }
 
     template <typename T, typename... Arguments>
-    void AddSystem(Arguments... args)
+    //All systems with orderlevel 0 will be updated first, then 1, 2, etc.
+    void AddSystem(int updateOrderLevel, Arguments... args)
     {
+        if (updateOrderLevel + 1 > m_OrderedSystemGroups.size()) {
+            m_OrderedSystemGroups.resize(updateOrderLevel + 1);
+        }
+        UnorderedSystems& group = m_OrderedSystemGroups[updateOrderLevel];
         System* system = new T(m_EventBroker, args...);
-        m_Systems[typeid(T).name()] = system;
+        group.Systems[typeid(T).name()] = system;
 
         if (std::is_base_of<PureSystem, T>::value) {
             PureSystem* pureSystem = static_cast<PureSystem*>(system);
             if (!pureSystem->m_ComponentType.empty()) {
-                m_PureSystems[pureSystem->m_ComponentType].push_back(pureSystem);
+                group.PureSystems[pureSystem->m_ComponentType].push_back(pureSystem);
             } else {
                 LOG_ERROR("Failed to add pure system \"%s\": Missing component type!", typeid(T).name());
             }
@@ -36,41 +43,47 @@ public:
 
         if (std::is_base_of<ImpureSystem, T>::value) {
             ImpureSystem* impureSystem = static_cast<ImpureSystem*>(system);
-            m_ImpureSystems.push_back(impureSystem);
+            group.ImpureSystems.push_back(impureSystem);
         }
     }
 
     void Update(World* world, double dt)
     {
-        // Process events
-        for (auto& pair : m_Systems) {
-            m_EventBroker->Process(pair.first);
-        }
-
-        // Update
-        for (auto& pair : m_PureSystems) {
-            const std::string& componentName = pair.first;
-            auto& systems = pair.second;
-            const ComponentPool* pool = world->GetComponents(componentName);
-            if (pool == nullptr) {
-                continue;
+        for (UnorderedSystems& group : m_OrderedSystemGroups) {
+            // Process events
+            for (auto& pair : group.Systems) {
+                m_EventBroker->Process(pair.first);
             }
-            for (auto& component : *pool) {
-                for (auto& system : systems) {
-                    system->UpdateComponent(world, component, dt);
+
+            // Update
+            for (auto& pair : group.PureSystems) {
+                const std::string& componentName = pair.first;
+                auto& systems = pair.second;
+                const ComponentPool* pool = world->GetComponents(componentName);
+                if (pool == nullptr) {
+                    continue;
+                }
+                for (auto& component : *pool) {
+                    for (auto& system : systems) {
+                        system->UpdateComponent(world, component, dt);
+                    }
                 }
             }
-        }
-        for (auto& system : m_ImpureSystems) {
-            system->Update(world, dt);
+            for (auto& system : group.ImpureSystems) {
+                system->Update(world, dt);
+            }
         }
     }
 
 private:
     EventBroker* m_EventBroker;
-    std::map<std::string, System*> m_Systems;
-    std::map<std::string, std::vector<PureSystem*>> m_PureSystems;
-    std::vector<ImpureSystem*> m_ImpureSystems;
+    struct UnorderedSystems
+    {
+        std::map<std::string, System*> Systems;
+        std::map<std::string, std::vector<PureSystem*>> PureSystems;
+        std::vector<ImpureSystem*> ImpureSystems;
+    };
+    std::vector<UnorderedSystems> m_OrderedSystemGroups;
 };
 
 #endif