1 files changed, 94 insertions, 0 deletions
diff --git a/source/game/StarWorldClientState.cpp b/source/game/StarWorldClientState.cpp
new file mode 100644
index 0000000..978c115
--- /dev/null
+++ b/source/game/StarWorldClientState.cpp
@@ -0,0 +1,94 @@
+#include "StarWorldClientState.hpp"
+#include "StarDataStreamExtra.hpp"
+#include "StarRoot.hpp"
+#include "StarAssets.hpp"
+
+namespace Star {
+
+WorldClientState::WorldClientState() {
+  auto clientConfig = Root::singleton().assets()->json("/client.config");
+
+  m_windowMonitoringBorder = clientConfig.getInt("windowMonitoringBorder");
+  m_presenceEntityMonitoringBorder = clientConfig.getInt("presenceEntityMonitoringBorder");
+
+  m_playerId.set(NullEntityId);
+
+  m_netVersion = 0;
+
+  m_netGroup.addNetElement(&m_windowXMin);
+  m_netGroup.addNetElement(&m_windowYMin);
+  m_netGroup.addNetElement(&m_windowWidth);
+  m_netGroup.addNetElement(&m_windowHeight);
+
+  m_netGroup.addNetElement(&m_playerId);
+  m_netGroup.addNetElement(&m_clientPresenceEntities);
+}
+
+RectI WorldClientState::window() const {
+  return RectI::withSize(Vec2I(m_windowXMin.get(), m_windowYMin.get()), Vec2I(m_windowWidth.get(), m_windowHeight.get()));
+}
+
+void WorldClientState::setWindow(RectI const& window) {
+  m_windowXMin.set(window.xMin());
+  m_windowYMin.set(window.yMin());
+  m_windowWidth.set(window.width());
+  m_windowHeight.set(window.height());
+}
+
+Vec2F WorldClientState::windowCenter() const {
+  return RectF(window()).center();
+}
+
+EntityId WorldClientState::playerId() const {
+  return m_playerId.get();
+}
+
+void WorldClientState::setPlayer(EntityId playerId) {
+  return m_playerId.set(playerId);
+}
+
+List<EntityId> const& WorldClientState::clientPresenceEntities() const {
+  return m_clientPresenceEntities.get();
+}
+
+void WorldClientState::setClientPresenceEntities(List<EntityId> entities) {
+  m_clientPresenceEntities.set(move(entities));
+}
+
+List<RectI> WorldClientState::monitoringRegions(function<Maybe<RectI>(EntityId)> entityBounds) const {
+  List<RectI> regions;
+  
+  auto windowRegion = window().padded(m_windowMonitoringBorder);
+
+  if (window() != RectI())
+    regions.append(windowRegion);
+
+  if (auto playerBounds = entityBounds(m_playerId.get())) {
+    // add an extra region the size of the window centered on the player's position to prevent nearby sectors
+    // being unloaded due to camera panning or centering on other entities
+    regions.append(RectI::withCenter(playerBounds->center(), windowRegion.size()));
+  }
+
+  for (auto entityId : m_clientPresenceEntities.get()) {
+    if (auto bounds = entityBounds(entityId))
+      regions.append(bounds->padded(m_presenceEntityMonitoringBorder));
+  }
+
+  return regions;
+}
+
+ByteArray WorldClientState::writeDelta() {
+  ByteArray delta;
+  tie(delta, m_netVersion) = m_netGroup.writeNetState(m_netVersion);
+  return delta;
+}
+
+void WorldClientState::readDelta(ByteArray delta) {
+  m_netGroup.readNetState(move(delta));
+}
+
+void WorldClientState::reset() {
+  m_netVersion = 0;
+}
+
+}