Start of Interface callbacks, starting with a bindCanvas function for the whole screen

source/client/StarClientApplication.cpp

@@ -15,6 +15,8 @@
 #include "StarWorldClient.hpp"
 #include "StarRootLoader.hpp"
 
+#include "StarInterfaceLuaBindings.hpp"
+
 namespace Star {
 
 Json const AdditionalAssetsSettings = Json::parseJson(R"JSON(
@@ -384,6 +386,7 @@ void ClientApplication::render() {
 
   } else if (m_state > MainAppState::Title) {
     WorldClientPtr worldClient = m_universeClient->worldClient();
+
     RendererPtr renderer = Application::renderer();
     if (worldClient) {
       auto totalStart = Time::monotonicMicroseconds();
@@ -480,6 +483,7 @@ void ClientApplication::changeState(MainAppState newState) {
     m_playerStorage = make_shared<PlayerStorage>(m_root->toStoragePath("player"));
     m_statistics = make_shared<Statistics>(m_root->toStoragePath("player"), appController()->statisticsService());
     m_universeClient = make_shared<UniverseClient>(m_playerStorage, m_statistics);
+
     m_mainMixer->setUniverseClient(m_universeClient);
     m_titleScreen = make_shared<TitleScreen>(m_playerStorage, m_mainMixer->mixer());
     if (auto renderer = Application::renderer())
@@ -596,6 +600,7 @@ void ClientApplication::changeState(MainAppState newState) {
 
     m_worldPainter = make_shared<WorldPainter>();
     m_mainInterface = make_shared<MainInterface>(m_universeClient, m_worldPainter, m_cinematicOverlay);
+    m_universeClient->setLuaCallbacks("interface", LuaBindings::makeInterfaceCallbacks(m_mainInterface.get()));
     m_mainMixer->setWorldPainter(m_worldPainter);
 
     if (auto renderer = Application::renderer()) {

source/frontend/CMakeLists.txt

@@ -32,6 +32,7 @@ SET (star_frontend_HEADERS
     StarGraphicsMenu.hpp
     StarInventory.hpp
     StarInterfaceCursor.hpp
+    StarInterfaceLuaBindings.hpp
     StarItemTooltip.hpp
     StarJoinRequestDialog.hpp
     StarKeybindingsMenu.hpp
@@ -80,6 +81,7 @@ SET (star_frontend_SOURCES
     StarGraphicsMenu.cpp
     StarInventory.cpp
     StarInterfaceCursor.cpp
+    StarInterfaceLuaBindings.cpp
     StarItemTooltip.cpp
     StarJoinRequestDialog.cpp
     StarKeybindingsMenu.cpp

source/frontend/StarInterfaceLuaBindings.cpp

@@ -0,0 +1,21 @@
+#include "StarInterfaceLuaBindings.hpp"
+#include "StarWidgetLuaBindings.hpp"
+#include "StarJsonExtra.hpp"
+#include "StarLuaGameConverters.hpp"
+#include "StarMainInterface.hpp"
+
+namespace Star {
+
+LuaCallbacks LuaBindings::makeInterfaceCallbacks(MainInterface* mainInterface) {
+  LuaCallbacks callbacks;
+
+  callbacks.registerCallback("bindCanvas", [mainInterface](String const& canvasName) -> Maybe<CanvasWidgetPtr> {
+    if (auto canvas = mainInterface->fetchCanvas(canvasName))
+      return canvas;
+    return {};
+  });
+
+  return callbacks;
+}
+
+}

source/frontend/StarInterfaceLuaBindings.hpp

@@ -0,0 +1,16 @@
+#ifndef STAR_INTERFACE_LUA_BINDINGS_HPP
+#define STAR_INTERFACE_LUA_BINDINGS_HPP
+
+#include "StarLua.hpp"
+
+namespace Star {
+
+STAR_CLASS(MainInterface);
+
+namespace LuaBindings {
+  LuaCallbacks makeInterfaceCallbacks(MainInterface* mainInterface);
+}
+
+}
+
+#endif

source/frontend/StarMainInterface.cpp

@@ -24,6 +24,7 @@
 #include "StarWireInterface.hpp"
 #include "StarTeamBar.hpp"
 #include "StarStatusPane.hpp"
+#include "StarCanvasWidget.hpp"
 #include "StarLabelWidget.hpp"
 #include "StarItemSlotWidget.hpp"
 #include "StarPlayer.hpp"
@@ -792,6 +793,12 @@ void MainInterface::update() {
     m_client->mainPlayer()->setBusyState(PlayerBusyState::Chatting);
   else
     m_client->mainPlayer()->setBusyState(PlayerBusyState::None);
+
+  for (auto& pair : m_canvases) {
+    pair.second->setPosition(Vec2I());
+    pair.second->setSize(Vec2I(m_guiContext->windowSize()));
+    pair.second->update();
+  }
 }
 
 void MainInterface::renderInWorldElements() {
@@ -820,6 +827,10 @@ void MainInterface::render() {
   renderMainBar();
   renderDebug();
 
+  RectI screenRect = RectI::withSize(Vec2I(), Vec2I(m_guiContext->windowSize()));
+  for (auto& pair : m_canvases)
+    pair.second->render(screenRect);
+
   renderWindows();
   renderCursor();
 }
@@ -912,6 +923,18 @@ void MainInterface::warpTo(WarpAction const& warpAction) {
   }
 }
 
+CanvasWidgetPtr MainInterface::fetchCanvas(String const& canvasName) {
+  if (auto canvasPtr = m_canvases.ptr(canvasName))
+    return *canvasPtr;
+  else {
+    CanvasWidgetPtr canvas = m_canvases.emplace(canvasName, make_shared<CanvasWidget>()).first->second;
+    canvas->setPosition(Vec2I());
+    canvas->setSize(Vec2I(m_guiContext->windowSize()));
+    canvas->setIgnoreInterfaceScale(true);
+    return canvas;
+  }
+}
+
 PanePtr MainInterface::createEscapeDialog() {
   auto assets = Root::singleton().assets();
 

source/frontend/StarMainInterface.hpp

@@ -42,6 +42,7 @@ STAR_CLASS(QuestTrackerPane);
 STAR_CLASS(ContainerInteractor);
 STAR_CLASS(ScriptPane);
 STAR_CLASS(ChatBubbleManager);
+STAR_CLASS(CanvasWidget);
 
 STAR_STRUCT(GuiMessage);
 STAR_CLASS(MainInterface);
@@ -114,6 +115,8 @@ public:
   void warpToOwnShip();
   void warpTo(WarpAction const& warpAction);
 
+  CanvasWidgetPtr fetchCanvas(String const& canvasName);
+
 private:
   PanePtr createEscapeDialog();
 
@@ -167,6 +170,8 @@ private:
   ScriptPanePtr m_collections;
   Map<EntityId, PanePtr> m_interactionScriptPanes;
 
+  StringMap<CanvasWidgetPtr> m_canvases;
+
   ChatPtr m_chat;
   ClientCommandProcessorPtr m_clientCommandProcessor;
   RadioMessagePopupPtr m_radioMessagePopup;

source/frontend/StarScriptPane.cpp

@@ -12,6 +12,7 @@
 #include "StarPlayer.hpp"
 #include "StarUniverseClient.hpp"
 #include "StarWidgetLuaBindings.hpp"
+#include "StarInterfaceLuaBindings.hpp"
 #include "StarCanvasWidget.hpp"
 #include "StarItemTooltip.hpp"
 #include "StarItemGridWidget.hpp"

source/frontend/StarWidgetLuaBindings.cpp

@@ -17,74 +17,77 @@
 
 namespace Star {
 
-template <>
-struct LuaConverter<CanvasWidgetPtr> : LuaUserDataConverter<CanvasWidgetPtr> {};
+LuaMethods<CanvasWidgetPtr> LuaUserDataMethods<CanvasWidgetPtr>::make() {
+  LuaMethods<CanvasWidgetPtr> methods;
 
-template <>
-struct LuaUserDataMethods<CanvasWidgetPtr> {
-  static LuaMethods<CanvasWidgetPtr> make() {
-    LuaMethods<CanvasWidgetPtr> methods;
+  methods.registerMethodWithSignature<Vec2I, CanvasWidgetPtr>("size", mem_fn(&CanvasWidget::size));
+  methods.registerMethodWithSignature<Vec2I, CanvasWidgetPtr>("mousePosition", mem_fn(&CanvasWidget::mousePosition));
 
-    methods.registerMethodWithSignature<Vec2I, CanvasWidgetPtr>("size", mem_fn(&CanvasWidget::size));
-    methods.registerMethodWithSignature<Vec2I, CanvasWidgetPtr>("mousePosition", mem_fn(&CanvasWidget::mousePosition));
+  methods.registerMethodWithSignature<void, CanvasWidgetPtr>("clear", mem_fn(&CanvasWidget::clear));
 
-    methods.registerMethodWithSignature<void, CanvasWidgetPtr>("clear", mem_fn(&CanvasWidget::clear));
+  methods.registerMethod("drawDrawable", [](CanvasWidgetPtr canvasWidget, Drawable drawable) {
+    canvasWidget->drawDrawable(move(drawable), Vec2F());
+  });
 
-    methods.registerMethod("drawImage",
-        [](CanvasWidgetPtr canvasWidget, String image, Vec2F position, Maybe<float> scale, Maybe<Color> color, Maybe<bool> centered) {
-          if (centered && *centered)
-            canvasWidget->drawImageCentered(image, position, scale.value(1.0f), color.value(Color::White).toRgba());
-          else
-            canvasWidget->drawImage(image, position, scale.value(1.0f), color.value(Color::White).toRgba());
-        });
-    methods.registerMethod("drawImageDrawable",
-        [](CanvasWidgetPtr canvasWidget, String image, Vec2F position, MVariant<Vec2F, float> scale, Maybe<Color> color, Maybe<float> rotation) {
-          auto drawable = Drawable::makeImage(image, 1.0, true, {0.0, 0.0}, color.value(Color::White));
-          if (auto s = scale.maybe<Vec2F>())
-            drawable.transform(Mat3F::scaling(*s));
-          else if(auto s = scale.maybe<float>())
-            drawable.transform(Mat3F::scaling(*s));
-          if (rotation)
-            drawable.rotate(*rotation);
-          canvasWidget->drawDrawable(drawable, position);
-        });
-    methods.registerMethod("drawImageRect",
-        [](CanvasWidgetPtr canvasWidget, String image, RectF texCoords, RectF screenCoords, Maybe<Color> color) {
-          canvasWidget->drawImageRect(image, texCoords, screenCoords, color.value(Color::White).toRgba());
-        });
-    methods.registerMethod("drawTiledImage",
-        [](CanvasWidgetPtr canvasWidget, String image, Vec2D offset, RectF screenCoords, Maybe<float> scale, Maybe<Color> color) {
-          canvasWidget->drawTiledImage(image, scale.value(1.0f), offset, screenCoords, color.value(Color::White).toRgba());
-        });
-    methods.registerMethod("drawLine",
-        [](CanvasWidgetPtr canvasWidget, Vec2F begin, Vec2F end, Maybe<Color> color, Maybe<float> lineWidth) {
-          canvasWidget->drawLine(begin, end, color.value(Color::White).toRgba(), lineWidth.value(1.0f));
-        });
-    methods.registerMethod("drawRect",
-        [](CanvasWidgetPtr canvasWidget, RectF rect, Maybe<Color> color) {
-          canvasWidget->drawRect(rect, color.value(Color::White).toRgba());
-        });
-    methods.registerMethod("drawPoly",
-        [](CanvasWidgetPtr canvasWidget, PolyF poly, Maybe<Color> color, Maybe<float> lineWidth) {
-          canvasWidget->drawPoly(poly, color.value(Color::White).toRgba(), lineWidth.value(1.0f));
-        });
-    methods.registerMethod("drawTriangles",
-        [](CanvasWidgetPtr canvasWidget, List<PolyF> triangles, Maybe<Color> color) {
-          auto tris = triangles.transformed([](PolyF const& poly) {
-              if (poly.sides() != 3)
-                throw StarException("Triangle must have exactly 3 sides");
-              return tuple<Vec2F, Vec2F, Vec2F>(poly.vertex(0), poly.vertex(1), poly.vertex(2));
-            });
-          canvasWidget->drawTriangles(tris, color.value(Color::White).toRgba());
-        });
-    methods.registerMethod("drawText",
-        [](CanvasWidgetPtr canvasWidget, String text, Json tp, unsigned fontSize, Maybe<Color> color, Maybe<float> lineSpacing, Maybe<String> font, Maybe<String> directives) {
-          canvasWidget->drawText(text, TextPositioning(tp), fontSize, color.value(Color::White).toRgba(), FontMode::Normal, lineSpacing.value(DefaultLineSpacing), font.value(""), directives.value(""));
-        });
+  methods.registerMethod("drawDrawables", [](CanvasWidgetPtr canvasWidget, List<Drawable> drawables) {
+    for (auto& drawable : drawables)
+      canvasWidget->drawDrawable(move(drawable), Vec2F());
+  });
 
-    return methods;
-  }
-};
+  methods.registerMethod("drawImage",
+      [](CanvasWidgetPtr canvasWidget, String image, Vec2F position, Maybe<float> scale, Maybe<Color> color, Maybe<bool> centered) {
+        if (centered && *centered)
+          canvasWidget->drawImageCentered(image, position, scale.value(1.0f), color.value(Color::White).toRgba());
+        else
+          canvasWidget->drawImage(image, position, scale.value(1.0f), color.value(Color::White).toRgba());
+      });
+  methods.registerMethod("drawImageDrawable",
+      [](CanvasWidgetPtr canvasWidget, String image, Vec2F position, MVariant<Vec2F, float> scale, Maybe<Color> color, Maybe<float> rotation) {
+        auto drawable = Drawable::makeImage(image, 1.0, true, {0.0, 0.0}, color.value(Color::White));
+        if (auto s = scale.maybe<Vec2F>())
+          drawable.transform(Mat3F::scaling(*s));
+        else if(auto s = scale.maybe<float>())
+          drawable.transform(Mat3F::scaling(*s));
+        if (rotation)
+          drawable.rotate(*rotation);
+        canvasWidget->drawDrawable(drawable, position);
+      });
+  methods.registerMethod("drawImageRect",
+      [](CanvasWidgetPtr canvasWidget, String image, RectF texCoords, RectF screenCoords, Maybe<Color> color) {
+        canvasWidget->drawImageRect(image, texCoords, screenCoords, color.value(Color::White).toRgba());
+      });
+  methods.registerMethod("drawTiledImage",
+      [](CanvasWidgetPtr canvasWidget, String image, Vec2D offset, RectF screenCoords, Maybe<float> scale, Maybe<Color> color) {
+        canvasWidget->drawTiledImage(image, scale.value(1.0f), offset, screenCoords, color.value(Color::White).toRgba());
+      });
+  methods.registerMethod("drawLine",
+      [](CanvasWidgetPtr canvasWidget, Vec2F begin, Vec2F end, Maybe<Color> color, Maybe<float> lineWidth) {
+        canvasWidget->drawLine(begin, end, color.value(Color::White).toRgba(), lineWidth.value(1.0f));
+      });
+  methods.registerMethod("drawRect",
+      [](CanvasWidgetPtr canvasWidget, RectF rect, Maybe<Color> color) {
+        canvasWidget->drawRect(rect, color.value(Color::White).toRgba());
+      });
+  methods.registerMethod("drawPoly",
+      [](CanvasWidgetPtr canvasWidget, PolyF poly, Maybe<Color> color, Maybe<float> lineWidth) {
+        canvasWidget->drawPoly(poly, color.value(Color::White).toRgba(), lineWidth.value(1.0f));
+      });
+  methods.registerMethod("drawTriangles",
+      [](CanvasWidgetPtr canvasWidget, List<PolyF> triangles, Maybe<Color> color) {
+        auto tris = triangles.transformed([](PolyF const& poly) {
+            if (poly.sides() != 3)
+              throw StarException("Triangle must have exactly 3 sides");
+            return tuple<Vec2F, Vec2F, Vec2F>(poly.vertex(0), poly.vertex(1), poly.vertex(2));
+          });
+        canvasWidget->drawTriangles(tris, color.value(Color::White).toRgba());
+      });
+  methods.registerMethod("drawText",
+      [](CanvasWidgetPtr canvasWidget, String text, Json tp, unsigned fontSize, Maybe<Color> color, Maybe<float> lineSpacing, Maybe<String> font, Maybe<String> directives) {
+        canvasWidget->drawText(text, TextPositioning(tp), fontSize, color.value(Color::White).toRgba(), FontMode::Normal, lineSpacing.value(DefaultLineSpacing), font.value(""), directives.value(""));
+      });
+
+  return methods;
+}
 
 LuaCallbacks LuaBindings::makeWidgetCallbacks(Widget* parentWidget, GuiReader* reader) {
   LuaCallbacks callbacks;

source/frontend/StarWidgetLuaBindings.hpp

@@ -7,6 +7,15 @@
 namespace Star {
 
 STAR_CLASS(Widget);
+STAR_CLASS(CanvasWidget);
+
+template <>
+struct LuaConverter<CanvasWidgetPtr> : LuaUserDataConverter<CanvasWidgetPtr> {};
+
+template <>
+struct LuaUserDataMethods<CanvasWidgetPtr> {
+  static LuaMethods<CanvasWidgetPtr> make();
+};
 
 namespace LuaBindings {
   LuaCallbacks makeWidgetCallbacks(Widget* parentWidget, GuiReader* reader);

source/game/StarUniverseClient.cpp

@@ -112,6 +112,8 @@ Maybe<String> UniverseClient::connect(UniverseConnection connection, bool allowA
     m_mainPlayer->setClientContext(m_clientContext);
     m_mainPlayer->setStatistics(m_statistics);
     m_worldClient = make_shared<WorldClient>(m_mainPlayer);
+    for (auto& pair : m_luaCallbacks)
+      m_worldClient->setLuaCallbacks(pair.first, pair.second);
 
     m_connection = move(connection);
     m_celestialDatabase = make_shared<CelestialSlaveDatabase>(move(success->celestialInformation));
@@ -436,6 +438,12 @@ uint16_t UniverseClient::maxPlayers() {
   return m_serverInfo.apply([](auto const& info) { return info.maxPlayers; }).value(1);
 }
 
+void UniverseClient::setLuaCallbacks(String const& groupName, LuaCallbacks const& callbacks) {
+  m_luaCallbacks[groupName] = callbacks;
+  if (m_worldClient)
+    m_worldClient->setLuaCallbacks(groupName, callbacks);
+}
+
 ClockConstPtr UniverseClient::universeClock() const {
   return m_universeClock;
 }

source/game/StarUniverseClient.hpp

@@ -85,6 +85,8 @@ public:
   uint16_t players();
   uint16_t maxPlayers();
 
+  void setLuaCallbacks(String const& groupName, LuaCallbacks const& callbacks);
+
   ClockConstPtr universeClock() const;
   CelestialLogConstPtr celestialLog() const;
   JsonRpcInterfacePtr rpcInterface() const;
@@ -117,6 +119,8 @@ private:
   SystemWorldClientPtr m_systemWorldClient;
   Maybe<UniverseConnection> m_connection;
   Maybe<ServerInfo> m_serverInfo;
+  
+  StringMap<LuaCallbacks> m_luaCallbacks;
 
   CelestialSlaveDatabasePtr m_celestialDatabase;
   ClientContextPtr m_clientContext;

source/game/StarWorldClient.cpp

@@ -45,6 +45,8 @@ WorldClient::WorldClient(PlayerPtr mainPlayer) {
   m_collisionDebug = false;
   m_inWorld = false;
 
+  m_luaRoot = make_shared<LuaRoot>();
+
   m_mainPlayer = mainPlayer;
 
   centerClientWindowOnPlayer(Vec2U(100, 100));
@@ -895,6 +897,10 @@ List<PacketPtr> WorldClient::getOutgoingPackets() {
   return std::move(m_outgoingPackets);
 }
 
+void WorldClient::setLuaCallbacks(String const& groupName, LuaCallbacks const& callbacks) {
+  m_luaRoot->addCallbacks(groupName, callbacks);
+}
+
 void WorldClient::update() {
   if (!inWorld())
     return;
@@ -1486,7 +1492,7 @@ void WorldClient::initWorld(WorldStartPacket const& startPacket) {
   m_entityMap = make_shared<EntityMap>(m_worldTemplate->size(), entitySpace.first, entitySpace.second);
   m_tileArray = make_shared<ClientTileSectorArray>(m_worldTemplate->size());
   m_damageManager = make_shared<DamageManager>(this, startPacket.clientId);
-  m_luaRoot = make_shared<LuaRoot>();
+  m_luaRoot->restart();
   m_luaRoot->tuneAutoGarbageCollection(m_clientConfig.getFloat("luaGcPause"), m_clientConfig.getFloat("luaGcStepMultiplier"));
   m_playerStart = startPacket.playerRespawn;
   m_respawnInWorld = startPacket.respawnInWorld;
@@ -1559,7 +1565,8 @@ void WorldClient::clearWorld() {
   m_tileArray.reset();
 
   m_damageManager.reset();
-  m_luaRoot.reset();
+
+  m_luaRoot->shutdown();
 
   m_particles.reset();
 

source/game/StarWorldClient.hpp

@@ -127,6 +127,9 @@ public:
 
   void handleIncomingPackets(List<PacketPtr> const& packets);
   List<PacketPtr> getOutgoingPackets();
+  
+  // Sets default callbacks in the LuaRoot.
+  void setLuaCallbacks(String const& groupName, LuaCallbacks const& callbacks);
 
   // Set the rendering window for this client.
   void setClientWindow(RectI window);

source/game/scripting/StarLuaRoot.cpp

@@ -5,16 +5,10 @@ namespace Star {
 
 LuaRoot::LuaRoot() {
   auto& root = Root::singleton();
-
-  m_luaEngine = LuaEngine::create(root.configuration()->get("safeScripts").toBool());
-
-  m_luaEngine->setRecursionLimit(root.configuration()->get("scriptRecursionLimit").toUInt());
-  m_luaEngine->setInstructionLimit(root.configuration()->get("scriptInstructionLimit").toUInt());
-  m_luaEngine->setProfilingEnabled(root.configuration()->get("scriptProfilingEnabled").toBool());
-  m_luaEngine->setInstructionMeasureInterval(root.configuration()->get("scriptInstructionMeasureInterval").toUInt());
-
   m_scriptCache = make_shared<ScriptCache>();
 
+  restart();
+
   m_rootReloadListener = make_shared<CallbackListener>([cache = m_scriptCache]() {
       cache->clear();
     });
@@ -24,6 +18,40 @@ LuaRoot::LuaRoot() {
 }
 
 LuaRoot::~LuaRoot() {
+  shutdown();
+}
+
+void LuaRoot::loadScript(String const& assetPath) {
+  m_scriptCache->loadScript(*m_luaEngine, assetPath);
+}
+
+bool LuaRoot::scriptLoaded(String const& assetPath) const {
+  return m_scriptCache->scriptLoaded(assetPath);
+}
+
+void LuaRoot::unloadScript(String const& assetPath) {
+  m_scriptCache->unloadScript(assetPath);
+}
+
+void LuaRoot::restart() {
+  shutdown();
+
+  auto& root = Root::singleton();
+
+  m_luaEngine = LuaEngine::create(root.configuration()->get("safeScripts").toBool());
+
+  m_luaEngine->setRecursionLimit(root.configuration()->get("scriptRecursionLimit").toUInt());
+  m_luaEngine->setInstructionLimit(root.configuration()->get("scriptInstructionLimit").toUInt());
+  m_luaEngine->setProfilingEnabled(root.configuration()->get("scriptProfilingEnabled").toBool());
+  m_luaEngine->setInstructionMeasureInterval(root.configuration()->get("scriptInstructionMeasureInterval").toUInt());
+}
+
+void LuaRoot::shutdown() {
+  clearScriptCache();
+
+  if (!m_luaEngine)
+    return;
+
   auto profile = m_luaEngine->getProfile();
   if (!profile.empty()) {
     profile.sort([](auto const& a, auto const& b) {
@@ -56,18 +84,8 @@ LuaRoot::~LuaRoot() {
     Logger::info("Writing lua profile {}", filename);
     File::writeFile(profileSummary, path);
   }
-}
 
-void LuaRoot::loadScript(String const& assetPath) {
-  m_scriptCache->loadScript(*m_luaEngine, assetPath);
-}
-
-bool LuaRoot::scriptLoaded(String const& assetPath) const {
-  return m_scriptCache->scriptLoaded(assetPath);
-}
-
-void LuaRoot::unloadScript(String const& assetPath) {
-  m_scriptCache->unloadScript(assetPath);
+  m_luaEngine.reset();
 }
 
 LuaContext LuaRoot::createContext(String const& script) {
@@ -91,33 +109,43 @@ LuaContext LuaRoot::createContext(StringList const& scriptPaths) {
   for (auto const& scriptPath : scriptPaths)
     cache->loadContextScript(newContext, scriptPath);
 
+  for (auto const& callbackPair : m_luaCallbacks)
+    newContext.setCallbacks(callbackPair.first, callbackPair.second);
+
   return newContext;
 }
 
 void LuaRoot::collectGarbage(Maybe<unsigned> steps) {
-  m_luaEngine->collectGarbage(steps);
+  if (m_luaEngine)
+    m_luaEngine->collectGarbage(steps);
 }
 
 void LuaRoot::setAutoGarbageCollection(bool autoGarbageColleciton) {
-  m_luaEngine->setAutoGarbageCollection(autoGarbageColleciton);
+  if (m_luaEngine)
+    m_luaEngine->setAutoGarbageCollection(autoGarbageColleciton);
 }
 
 void LuaRoot::tuneAutoGarbageCollection(float pause, float stepMultiplier) {
-  m_luaEngine->tuneAutoGarbageCollection(pause, stepMultiplier);
+  if (m_luaEngine)
+    m_luaEngine->tuneAutoGarbageCollection(pause, stepMultiplier);
 }
 
 size_t LuaRoot::luaMemoryUsage() const {
-  return m_luaEngine->memoryUsage();
+  return m_luaEngine ? m_luaEngine->memoryUsage() : 0;
 }
 
 size_t LuaRoot::scriptCacheMemoryUsage() const {
-  return m_scriptCache->memoryUsage();
+  return m_luaEngine ? m_scriptCache->memoryUsage() : 0;
 }
 
 void LuaRoot::clearScriptCache() const {
   return m_scriptCache->clear();
 }
 
+void LuaRoot::addCallbacks(String const& groupName, LuaCallbacks const& callbacks) {
+  m_luaCallbacks[groupName] = callbacks;
+}
+
 LuaEngine& LuaRoot::luaEngine() const {
   return *m_luaEngine;
 }

source/game/scripting/StarLuaRoot.hpp

@@ -21,6 +21,9 @@ public:
   bool scriptLoaded(String const& assetPath) const;
   void unloadScript(String const& assetPath);
 
+  void restart();
+  void shutdown();
+
   // A script context can be created from the combination of several scripts,
   // the functions / data in each script will be loaded in order, so that later
   // specified scripts will overwrite previous ones.
@@ -39,8 +42,9 @@ public:
   size_t scriptCacheMemoryUsage() const;
   void clearScriptCache() const;
 
-  LuaEngine& luaEngine() const;
+  void addCallbacks(String const& groupName, LuaCallbacks const& callbacks);
 
+  LuaEngine& luaEngine() const;
 private:
   class ScriptCache {
   public:
@@ -57,7 +61,9 @@ private:
   };
 
   LuaEnginePtr m_luaEngine;
+  StringMap<LuaCallbacks> m_luaCallbacks;
   shared_ptr<ScriptCache> m_scriptCache;
+
   ListenerPtr m_rootReloadListener;
 
   String m_storageDirectory;

source/windowing/StarCanvasWidget.cpp

@@ -3,8 +3,7 @@
 namespace Star {
 
 CanvasWidget::CanvasWidget() {
-  m_captureKeyboard = false;
-  m_captureMouse = false;
+  m_ignoreInterfaceScale = m_captureKeyboard = m_captureMouse = false;
 }
 
 void CanvasWidget::setCaptureMouseEvents(bool captureMouse) {
@@ -15,6 +14,10 @@ void CanvasWidget::setCaptureKeyboardEvents(bool captureKeyboard) {
   m_captureKeyboard = captureKeyboard;
 }
 
+void CanvasWidget::setIgnoreInterfaceScale(bool ignoreInterfaceScale) {
+  m_ignoreInterfaceScale = ignoreInterfaceScale;
+}
+
 void CanvasWidget::clear() {
   m_renderOps.clear();
 }
@@ -144,24 +147,33 @@ void CanvasWidget::renderImpl() {
 void CanvasWidget::renderImage(Vec2F const& renderingOffset, String const& texName, Vec2F const& position, float scale, Vec4B const& color, bool centered) {
   auto& context = GuiContext::singleton();
   auto texSize = Vec2F(context.textureSize(texName));
-  if (centered) {
-    auto screenCoords = RectF::withSize(renderingOffset * context.interfaceScale() + (position - scale * texSize / 2.0f) * context.interfaceScale(), texSize * scale * context.interfaceScale());
-    context.drawQuad(texName, screenCoords, color);
-  } else {
-    auto screenCoords = RectF::withSize(renderingOffset * context.interfaceScale() + position * context.interfaceScale(), texSize * scale * context.interfaceScale());
-    context.drawQuad(texName, screenCoords, color);
-  }
+  Vec2F pos = centered ? (position - scale * texSize / 2.0f) : position;
+
+  RectF screenCoords;
+  if (m_ignoreInterfaceScale)
+    screenCoords = RectF::withSize(renderingOffset + pos, texSize * scale);
+  else
+    screenCoords = RectF::withSize(renderingOffset * context.interfaceScale() + pos * context.interfaceScale(), texSize * scale * context.interfaceScale());
+
+  context.drawQuad(texName, screenCoords, color);
 }
 
 void CanvasWidget::renderImageRect(Vec2F const& renderingOffset, String const& texName, RectF const& texCoords, RectF const& screenCoords, Vec4B const& color) {
   auto& context = GuiContext::singleton();
-  context.drawQuad(texName, texCoords, screenCoords.scaled(context.interfaceScale()).translated(renderingOffset * context.interfaceScale()), color);
+  if (m_ignoreInterfaceScale)
+    context.drawQuad(texName, texCoords, screenCoords.translated(renderingOffset), color);
+  else
+    context.drawQuad(texName, texCoords, screenCoords.scaled(context.interfaceScale()).translated(renderingOffset * context.interfaceScale()), color);
 }
 
 void CanvasWidget::renderDrawable(Vec2F const& renderingOffset, Drawable drawable, Vec2F const& screenPos) {
   auto& context = GuiContext::singleton();
-  drawable.scale(context.interfaceScale());
-  context.drawDrawable(move(drawable), renderingOffset * context.interfaceScale() + screenPos * context.interfaceScale(), 1);
+  if (m_ignoreInterfaceScale)
+    context.drawDrawable(move(drawable), renderingOffset + screenPos, 1);
+  else {
+    drawable.scale(context.interfaceScale());
+    context.drawDrawable(move(drawable), renderingOffset * context.interfaceScale() + screenPos * context.interfaceScale(), 1);
+  }
 }
 
 void CanvasWidget::renderTiledImage(Vec2F const& renderingOffset, String const& texName, float textureScale, Vec2D const& offset, RectF const& screenCoords, Vec4B const& color) {
@@ -188,28 +200,42 @@ void CanvasWidget::renderTiledImage(Vec2F const& renderingOffset, String const&
       if (limitedScreenRect.isEmpty())
         continue;
 
-      context.drawQuad(texName, limitedTexRect, limitedScreenRect.translated(renderingOffset).scaled(context.interfaceScale()), color);
+      if (m_ignoreInterfaceScale)
+        context.drawQuad(texName, limitedTexRect, limitedScreenRect.translated(renderingOffset), color);
+      else
+        context.drawQuad(texName, limitedTexRect, limitedScreenRect.translated(renderingOffset).scaled(context.interfaceScale()), color);
     }
   }
 }
 
 void CanvasWidget::renderLine(Vec2F const& renderingOffset, Vec2F const& begin, Vec2F const end, Vec4B const& color, float lineWidth) {
   auto& context = GuiContext::singleton();
-  context.drawLine(
+  if (m_ignoreInterfaceScale)
+    context.drawLine(renderingOffset + begin, renderingOffset + end, color, lineWidth);
+  else {
+    context.drawLine(
       renderingOffset * context.interfaceScale() + begin * context.interfaceScale(),
       renderingOffset * context.interfaceScale() + end * context.interfaceScale(),
       color, lineWidth);
+  }
 }
 
 void CanvasWidget::renderRect(Vec2F const& renderingOffset, RectF const& coords, Vec4B const& color) {
   auto& context = GuiContext::singleton();
-  context.drawQuad(coords.scaled(context.interfaceScale()).translated(renderingOffset * context.interfaceScale()), color);
+
+  if (m_ignoreInterfaceScale)
+    context.drawQuad(coords.translated(renderingOffset), color);
+  else
+    context.drawQuad(coords.scaled(context.interfaceScale()).translated(renderingOffset * context.interfaceScale()), color);
 }
 
 void CanvasWidget::renderPoly(Vec2F const& renderingOffset, PolyF poly, Vec4B const& color, float lineWidth) {
   auto& context = GuiContext::singleton();
   poly.translate(renderingOffset);
-  context.drawInterfacePolyLines(poly, color, lineWidth);
+  if (m_ignoreInterfaceScale)
+    context.drawPolyLines(poly, color, lineWidth);
+  else
+    context.drawInterfacePolyLines(poly, color, lineWidth);
 }
 
 void CanvasWidget::renderTriangles(Vec2F const& renderingOffset, List<tuple<Vec2F, Vec2F, Vec2F>> const& triangles, Vec4B const& color) {
@@ -219,7 +245,10 @@ void CanvasWidget::renderTriangles(Vec2F const& renderingOffset, List<tuple<Vec2
         get<1>(poly) + renderingOffset,
         get<2>(poly) + renderingOffset);
     });
-  context.drawInterfaceTriangles(translated, color);
+  if (m_ignoreInterfaceScale)
+    context.drawTriangles(translated, color);
+  else
+    context.drawInterfaceTriangles(translated, color);
 }
 
 void CanvasWidget::renderText(Vec2F const& renderingOffset, String const& s, TextPositioning const& position, unsigned fontSize, Vec4B const& color, FontMode mode, float lineSpacing, String const& font, String const& directives) {
@@ -233,7 +262,10 @@ void CanvasWidget::renderText(Vec2F const& renderingOffset, String const& s, Tex
 
   TextPositioning translatedPosition = position;
   translatedPosition.pos += renderingOffset;
-  context.renderInterfaceText(s, translatedPosition);
+  if (m_ignoreInterfaceScale)
+    context.renderText(s, translatedPosition);
+  else
+    context.renderInterfaceText(s, translatedPosition);
 
   context.setDefaultLineSpacing();
   context.setDefaultFont();

source/windowing/StarCanvasWidget.hpp

@@ -31,6 +31,7 @@ public:
 
   void setCaptureMouseEvents(bool captureMouse);
   void setCaptureKeyboardEvents(bool captureKeyboard);
+  void setIgnoreInterfaceScale(bool ignoreInterfaceScale);
 
   // Returns mouse position relative to the lower left of the drawing region.
   Vec2I mousePosition() const;
@@ -81,6 +82,7 @@ protected:
   void renderText(Vec2F const& renderingOffset, String const& s, TextPositioning const& position, unsigned fontSize, Vec4B const& color, FontMode mode, float lineSpacing, String const& font, String const& directives);
 
 private:
+  bool m_ignoreInterfaceScale;
   bool m_captureKeyboard;
   bool m_captureMouse;
   Vec2I m_mousePosition;