1 files changed, 118 insertions, 0 deletions
diff --git a/source/frontend/StarNameplatePainter.cpp b/source/frontend/StarNameplatePainter.cpp
new file mode 100644
index 0000000..ccfcef3
--- /dev/null
+++ b/source/frontend/StarNameplatePainter.cpp
@@ -0,0 +1,118 @@
+#include "StarNameplatePainter.hpp"
+#include "StarJsonExtra.hpp"
+#include "StarAssets.hpp"
+#include "StarNametagEntity.hpp"
+#include "StarPlayer.hpp"
+#include "StarGuiContext.hpp"
+
+namespace Star {
+
+NameplatePainter::NameplatePainter() {
+  auto assets = Root::singleton().assets();
+
+  Json nametagConfig = assets->json("/interface.config:nametag");
+  m_opacityRate = nametagConfig.getFloat("opacityRate");
+  m_offset = jsonToVec2F(nametagConfig.get("offset"));
+  m_fontSize = nametagConfig.getFloat("fontSize");
+  m_statusFontSize = nametagConfig.getFloat("statusFontSize");
+  m_statusOffset = jsonToVec2F(nametagConfig.get("statusOffset"));
+  m_statusColor = jsonToColor(nametagConfig.get("statusColor"));
+  m_opacityBoost = nametagConfig.getFloat("opacityBoost");
+  m_nametags.setTweenFactor(nametagConfig.getFloat("tweenFactor"));
+  m_nametags.setMovementThreshold(nametagConfig.getFloat("movementThreshold"));
+}
+
+void NameplatePainter::update(WorldClientPtr const& world, WorldCamera const& camera, bool inspectionMode) {
+  m_camera = camera;
+
+  Set<EntityId> foundEntities;
+  for (auto const& entity : world->query<NametagEntity>(camera.worldScreenRect())) {
+    if (entity->isMaster() || !entity->displayNametag())
+      continue;
+    if (auto player = as<Player>(entity)) {
+      if (player->isTeleporting())
+        continue;
+    }
+    foundEntities.insert(entity->entityId());
+
+    if (!m_entitiesWithNametags.contains(entity->entityId())) {
+      Nametag nametag = {entity->name(), entity->statusText(), entity->nametagColor(), 1.0f, entity->entityId()};
+      RectF boundBox = determineBoundBox(Vec2F(), nametag);
+      m_nametags.addBubble(Vec2F(), boundBox, move(nametag));
+    }
+  }
+
+  m_nametags.filter([&foundEntities](
+      BubbleState<Nametag> const&, Nametag const& nametag) { return foundEntities.contains(nametag.entityId); });
+
+  m_nametags.forEach([&world, &camera, this, inspectionMode](BubbleState<Nametag>& bubbleState, Nametag& nametag) {
+    if (auto entity = as<NametagEntity>(world->entity(nametag.entityId))) {
+      bubbleState.idealDestination = camera.worldToScreen(entity->position()) + m_offset * camera.pixelRatio();
+      bubbleState.boundBox = determineBoundBox(bubbleState.idealDestination, nametag);
+
+      nametag.statusText = entity->statusText();
+      nametag.name = entity->name();
+      nametag.color = entity->nametagColor();
+      bool fullyOnScreen = world->geometry().rectContains(camera.worldScreenRect(), entity->position());
+      if (inspectionMode)
+        nametag.opacity = 1.0f;
+      else if (fullyOnScreen)
+        nametag.opacity = approach(0.0f, nametag.opacity, m_opacityRate);
+      else
+        nametag.opacity = approach(m_opacityBoost, nametag.opacity, m_opacityRate);
+    }
+  });
+
+  m_entitiesWithNametags = foundEntities;
+  m_nametags.update();
+}
+
+void NameplatePainter::render() {
+  auto& context = GuiContext::singleton();
+
+  m_nametags.forEach([&context, this](BubbleState<Nametag> const& bubble, Nametag const& nametag) {
+    if (nametag.opacity == 0.0f)
+      return;
+
+    context.setFontSize(m_fontSize);
+
+    auto color = Color::rgb(nametag.color);
+    color.setAlphaF(nametag.opacity);
+    auto statusColor = m_statusColor;
+    statusColor.setAlphaF(nametag.opacity);
+    context.setFontColor(color.toRgba());
+    context.setFontMode(FontMode::Shadow);
+
+    context.renderText(nametag.name, namePosition(bubble.currentPosition));
+
+    if (nametag.statusText) {
+      context.setFontSize(m_statusFontSize);
+      context.setFontColor(statusColor.toRgba());
+      context.renderText(*nametag.statusText, statusPosition(bubble.currentPosition));
+    }
+  });
+}
+
+TextPositioning NameplatePainter::namePosition(Vec2F bubblePosition) const {
+  return TextPositioning(bubblePosition, HorizontalAnchor::HMidAnchor, VerticalAnchor::BottomAnchor);
+}
+
+TextPositioning NameplatePainter::statusPosition(Vec2F bubblePosition) const {
+  auto& context = GuiContext::singleton();
+  return TextPositioning(
+      bubblePosition + m_statusOffset * context.interfaceScale(),
+      HorizontalAnchor::HMidAnchor, VerticalAnchor::BottomAnchor);
+}
+
+RectF NameplatePainter::determineBoundBox(Vec2F bubblePosition, Nametag const& nametag) const {
+  auto& context = GuiContext::singleton();
+  context.setFontSize(m_fontSize);
+  RectF nametagBox = context.determineTextSize(nametag.name, namePosition(bubblePosition));
+  if (nametag.statusText) {
+    context.setFontSize(m_statusFontSize);
+    nametagBox.combine(context.determineTextSize(*nametag.statusText, statusPosition(bubblePosition)));
+  }
+  return nametagBox;
+}
+
+}