v1.4.4

source/game/StarWorldClientState.hpp

@@ -0,0 +1,60 @@
+#ifndef STAR_WORLD_CLIENT_STATE_HPP
+#define STAR_WORLD_CLIENT_STATE_HPP
+
+#include "StarRect.hpp"
+#include "StarNetElementSystem.hpp"
+#include "StarGameTypes.hpp"
+
+namespace Star {
+
+STAR_CLASS(WorldClientState);
+
+// Class to aid in network syncronization of client state such as viewing area
+// and player entity id.
+class WorldClientState {
+public:
+  WorldClientState();
+
+  // Actual area of the client visible screen (rounded to nearest block)
+  RectI window() const;
+  void setWindow(RectI const& window);
+
+  // Shortcut to find the window center of the client.
+  Vec2F windowCenter() const;
+
+  // Entity of the unique main Player for this client
+  EntityId playerId() const;
+  void setPlayer(EntityId playerId);
+
+  // Entities that should contribute to the monitoring regions of the client.
+  List<EntityId> const& clientPresenceEntities() const;
+  void setClientPresenceEntities(List<EntityId> entities);
+
+  // All areas of the server monitored by the client, takes a function to
+  // resolve an entity id to its bound box.
+  List<RectI> monitoringRegions(function<Maybe<RectI>(EntityId)> entityBounds) const;
+
+  ByteArray writeDelta();
+  void readDelta(ByteArray delta);
+
+  void reset();
+
+private:
+  int m_windowMonitoringBorder;
+  int m_presenceEntityMonitoringBorder;
+
+  NetElementTopGroup m_netGroup;
+  uint64_t m_netVersion;
+
+  NetElementInt m_windowXMin;
+  NetElementInt m_windowYMin;
+  NetElementInt m_windowWidth;
+  NetElementInt m_windowHeight;
+
+  NetElementInt m_playerId;
+  NetElementData<List<EntityId>> m_clientPresenceEntities;
+};
+
+}
+
+#endif