Support for changing the game's timescale

Context-specific (like per-world) timescales can also be added later

57 files changed, 121 insertions, 116 deletions

diff --git a/source/frontend/StarActionBar.cpp b/source/frontend/StarActionBar.cpp
index 5ccff7b..82eb7d2 100644
--- a/source/frontend/StarActionBar.cpp
+++ b/source/frontend/StarActionBar.cpp
@@ -173,7 +173,7 @@ bool ActionBar::sendEvent(InputEvent const& event) {
   return false;
 }
 
-void ActionBar::update() {
+void ActionBar::update(float dt) {
   auto inventory = m_player->inventory();
   auto abl = inventory->selectedActionBarLocation();
   if (abl.is<CustomBarIndex>()) {
diff --git a/source/frontend/StarActionBar.hpp b/source/frontend/StarActionBar.hpp
index 2239bda..883b364 100644
--- a/source/frontend/StarActionBar.hpp
+++ b/source/frontend/StarActionBar.hpp
@@ -22,7 +22,7 @@ public:
   PanePtr createTooltip(Vec2I const& screenPosition) override;
   bool sendEvent(InputEvent const& event) override;
 
-  void update() override;
+  void update(float dt) override;
 
   Maybe<String> cursorOverride(Vec2I const& screenPosition) override;
 
diff --git a/source/frontend/StarAiInterface.cpp b/source/frontend/StarAiInterface.cpp
index d9a543a..599b829 100644
--- a/source/frontend/StarAiInterface.cpp
+++ b/source/frontend/StarAiInterface.cpp
@@ -98,21 +98,21 @@ AiInterface::AiInterface(UniverseClientPtr client, CinematicPtr cinematic, MainI
   m_defaultRecruitDescription = assets->json("/interface/ai/ai.config:defaultRecruitDescription").toString();
 }
 
-void AiInterface::update() {
+void AiInterface::update(float dt) {
   if (!m_client->playerOnOwnShip())
     dismiss();
 
-  Pane::update();
+  Pane::update(dt);
 
   m_showCrewButton->setVisibility(m_currentPage == AiPages::StatusPage);
   m_showMissionsButton->setVisibility(m_currentPage == AiPages::StatusPage);
   m_backButton->setVisibility(m_currentPage != AiPages::StatusPage);
 
-  m_staticAnimation.update(WorldTimestep);
-  m_scanlineAnimation.update(WorldTimestep);
+  m_staticAnimation.update(dt);
+  m_scanlineAnimation.update(dt);
 
   if (m_currentSpeech) {
-    m_textLength += m_currentSpeech->speedModifier * m_aiDatabase->charactersPerSecond() * WorldTimestep;
+    m_textLength += m_currentSpeech->speedModifier * m_aiDatabase->charactersPerSecond() * dt;
     m_currentTextWidget->setText(m_currentSpeech->text);
     m_currentTextWidget->setTextCharLimit(min(m_textMaxLength, floor(m_textLength)));
 
@@ -129,10 +129,10 @@ void AiInterface::update() {
       if (m_chatterSound)
         m_chatterSound->stop();
     }
-    m_faceAnimation.second.update(WorldTimestep * m_currentSpeech->speedModifier);
+    m_faceAnimation.second.update(dt * m_currentSpeech->speedModifier);
   } else {
     setFaceAnimation("idle");
-    m_faceAnimation.second.update(WorldTimestep);
+    m_faceAnimation.second.update(dt);
     if (m_chatterSound)
       m_chatterSound->stop();
   }
diff --git a/source/frontend/StarAiInterface.hpp b/source/frontend/StarAiInterface.hpp
index 0b5e713..7a4a229 100644
--- a/source/frontend/StarAiInterface.hpp
+++ b/source/frontend/StarAiInterface.hpp
@@ -34,7 +34,7 @@ class AiInterface : public Pane {
 public:
   AiInterface(UniverseClientPtr client, CinematicPtr cinematic, MainInterfacePaneManager* paneManager);
 
-  void update() override;
+  void update(float dt) override;
 
   void displayed() override;
   void dismissed() override;
diff --git a/source/frontend/StarBaseScriptPane.cpp b/source/frontend/StarBaseScriptPane.cpp
index 0254e46..90d253c 100644
--- a/source/frontend/StarBaseScriptPane.cpp
+++ b/source/frontend/StarBaseScriptPane.cpp
@@ -71,8 +71,8 @@ void BaseScriptPane::dismissed() {
   m_script.uninit();
 }
 
-void BaseScriptPane::tick() {
-  Pane::tick();
+void BaseScriptPane::tick(float dt) {
+  Pane::tick(dt);
 
   for (auto p : m_canvasClickCallbacks) {
     for (auto const& clickEvent : p.first->pullClickEvents())
@@ -83,7 +83,7 @@ void BaseScriptPane::tick() {
       m_script.invoke(p.second, (int)keyEvent.key, keyEvent.keyDown);
   }
 
-  m_script.update(m_script.updateDt());
+  m_script.update(m_script.updateDt(dt));
 }
 
 bool BaseScriptPane::sendEvent(InputEvent const& event) {
diff --git a/source/frontend/StarBaseScriptPane.hpp b/source/frontend/StarBaseScriptPane.hpp
index b5aa502..4a47a4a 100644
--- a/source/frontend/StarBaseScriptPane.hpp
+++ b/source/frontend/StarBaseScriptPane.hpp
@@ -22,7 +22,7 @@ public:
   void displayed() override;
   void dismissed() override;
 
-  void tick() override;
+  void tick(float dt) override;
 
   bool sendEvent(InputEvent const& event) override;
 
diff --git a/source/frontend/StarCharCreation.cpp b/source/frontend/StarCharCreation.cpp
index d873a72..440902c 100644
--- a/source/frontend/StarCharCreation.cpp
+++ b/source/frontend/StarCharCreation.cpp
@@ -183,13 +183,13 @@ void CharCreationPane::randomize() {
   changed();
 }
 
-void CharCreationPane::tick() {
-  Pane::tick();
+void CharCreationPane::tick(float dt) {
+  Pane::tick(dt);
   if (!active())
     return;
   if (!m_previewPlayer)
     return;
-  m_previewPlayer->animatePortrait();
+  m_previewPlayer->animatePortrait(dt);
 }
 
 bool CharCreationPane::sendEvent(InputEvent const& event) {
diff --git a/source/frontend/StarCharCreation.hpp b/source/frontend/StarCharCreation.hpp
index 272ea71..7a52f4f 100644
--- a/source/frontend/StarCharCreation.hpp
+++ b/source/frontend/StarCharCreation.hpp
@@ -23,7 +23,7 @@ public:
   void randomize();
   void randomizeName();
 
-  virtual void tick() override;
+  virtual void tick(float dt) override;
   virtual bool sendEvent(InputEvent const& event) override;
 
   virtual PanePtr createTooltip(Vec2I const&) override;
diff --git a/source/frontend/StarChat.cpp b/source/frontend/StarChat.cpp
index 7b75f2d..72c1409 100644
--- a/source/frontend/StarChat.cpp
+++ b/source/frontend/StarChat.cpp
@@ -95,8 +95,8 @@ Chat::Chat(UniverseClientPtr client) : m_client(client) {
   updateSize();
 }
 
-void Chat::update() {
-  Pane::update();
+void Chat::update(float dt) {
+  Pane::update(dt);
 
   auto team = m_client->teamClient()->currentTeam();
   for (auto button : fetchChild<ButtonGroup>("filterGroup")->buttons()) {
diff --git a/source/frontend/StarChat.hpp b/source/frontend/StarChat.hpp
index e88a797..7d9d127 100644
--- a/source/frontend/StarChat.hpp
+++ b/source/frontend/StarChat.hpp
@@ -26,7 +26,7 @@ public:
   virtual void renderImpl() override;
   virtual void hide() override;
 
-  virtual void update() override;
+  virtual void update(float dt) override;
 
   void addLine(String const& text, bool showPane = true);
   void addMessages(List<ChatReceivedMessage> const& messages, bool showPane = true);
diff --git a/source/frontend/StarChatBubbleManager.cpp b/source/frontend/StarChatBubbleManager.cpp
index b9077fe..166eba0 100644
--- a/source/frontend/StarChatBubbleManager.cpp
+++ b/source/frontend/StarChatBubbleManager.cpp
@@ -86,9 +86,9 @@ void ChatBubbleManager::setCamera(WorldCamera const& camera) {
   }
 }
 
-void ChatBubbleManager::update(WorldClientPtr world) {
-  m_bubbles.forEach([this, &world](BubbleState<Bubble>& bubbleState, Bubble& bubble) {
-    bubble.age += WorldTimestep;
+void ChatBubbleManager::update(float dt, WorldClientPtr world) {
+  m_bubbles.forEach([this, dt, &world](BubbleState<Bubble>& bubbleState, Bubble& bubble) {
+    bubble.age += dt;
     if (auto entity = world->get<ChattyEntity>(bubble.entity)) {
       bubble.onscreen = m_camera.worldGeometry().rectIntersectsRect(
           m_camera.worldScreenRect(), entity->metaBoundBox().translated(entity->position()));
@@ -97,7 +97,7 @@ void ChatBubbleManager::update(WorldClientPtr world) {
   });
 
   for (auto& portraitBubble : m_portraitBubbles) {
-    portraitBubble.age += WorldTimestep;
+    portraitBubble.age += dt;
     if (auto entity = world->entity(portraitBubble.entity)) {
       portraitBubble.onscreen = m_camera.worldGeometry().rectIntersectsRect(m_camera.worldScreenRect(), entity->metaBoundBox().translated(entity->position()));
       if (auto chatter = as<ChattyEntity>(entity))
@@ -125,7 +125,7 @@ void ChatBubbleManager::update(WorldClientPtr world) {
       return false;
     });
 
-  m_bubbles.update();
+  m_bubbles.update(dt);
 }
 
 uint8_t ChatBubbleManager::calcDistanceFadeAlpha(Vec2F bubbleScreenPosition, StoredFunctionPtr fadeFunction) const {
diff --git a/source/frontend/StarChatBubbleManager.hpp b/source/frontend/StarChatBubbleManager.hpp
index b23037a..9d8a867 100644
--- a/source/frontend/StarChatBubbleManager.hpp
+++ b/source/frontend/StarChatBubbleManager.hpp
@@ -22,7 +22,7 @@ public:
 
   void addChatActions(List<ChatAction> chatActions, bool silent = false);
 
-  void update(WorldClientPtr world);
+  void update(float dt, WorldClientPtr world);
   void render();
 
 private:
diff --git a/source/frontend/StarChatBubbleSeparation.hpp b/source/frontend/StarChatBubbleSeparation.hpp
index 756db27..4bbf018 100644
--- a/source/frontend/StarChatBubbleSeparation.hpp
+++ b/source/frontend/StarChatBubbleSeparation.hpp
@@ -52,7 +52,7 @@ public:
   List<Bubble> filtered(function<bool(Bubble const&, T const&)> func);
   void forEach(function<void(Bubble&, T&)> func);
 
-  void update();
+  void update(float dt);
   void clear();
   bool empty() const;
 
@@ -170,7 +170,7 @@ void BubbleSeparator<T>::forEach(function<void(Bubble&, T&)> func) {
 }
 
 template <typename T>
-void BubbleSeparator<T>::update() {
+void BubbleSeparator<T>::update(float dt) {
   m_bubbles.exec([this](Bubble& bubble) {
     Vec2F delta = bubble.seperatedOffset - bubble.currentOffset;
     bubble.currentOffset += m_tweenFactor * delta;
diff --git a/source/frontend/StarCinematic.cpp b/source/frontend/StarCinematic.cpp
index bf39bd0..40fc8d1 100644
--- a/source/frontend/StarCinematic.cpp
+++ b/source/frontend/StarCinematic.cpp
@@ -103,7 +103,7 @@ void Cinematic::setPlayer(PlayerPtr player) {
   m_player = player;
 }
 
-void Cinematic::update() {
+void Cinematic::update(float dt) {
   m_currentTimeSkip = {};
   for (auto timeSkip : m_timeSkips) {
     if (currentTimecode() >= timeSkip.availableTime && currentTimecode() < timeSkip.skipToTime)
diff --git a/source/frontend/StarCinematic.hpp b/source/frontend/StarCinematic.hpp
index 0939369..96f40e7 100644
--- a/source/frontend/StarCinematic.hpp
+++ b/source/frontend/StarCinematic.hpp
@@ -22,7 +22,7 @@ public:
 
   void setPlayer(PlayerPtr player);
 
-  void update();
+  void update(float dt);
   void render();
 
   bool completed() const;
diff --git a/source/frontend/StarCodexInterface.cpp b/source/frontend/StarCodexInterface.cpp
index aca0930..dcd82f3 100644
--- a/source/frontend/StarCodexInterface.cpp
+++ b/source/frontend/StarCodexInterface.cpp
@@ -50,7 +50,7 @@ void CodexInterface::show() {
   updateCodexList();
 }
 
-void CodexInterface::tick() {
+void CodexInterface::tick(float dt) {
   updateCodexList();
 }
 
diff --git a/source/frontend/StarCodexInterface.hpp b/source/frontend/StarCodexInterface.hpp
index 0f4b549..bd8e103 100644
--- a/source/frontend/StarCodexInterface.hpp
+++ b/source/frontend/StarCodexInterface.hpp
@@ -21,7 +21,7 @@ public:
   CodexInterface(PlayerPtr player);
 
   virtual void show() override;
-  virtual void tick() override;
+  virtual void tick(float dt) override;
 
   void showTitles();
   void showSelectedContents();
diff --git a/source/frontend/StarContainerInterface.cpp b/source/frontend/StarContainerInterface.cpp
index 5a69fda..6540dfb 100644
--- a/source/frontend/StarContainerInterface.cpp
+++ b/source/frontend/StarContainerInterface.cpp
@@ -258,11 +258,11 @@ void ContainerPane::burn() {
   m_containerInteractor->burnContainer();
 }
 
-void ContainerPane::update() {
-  Pane::update();
+void ContainerPane::update(float dt) {
+  Pane::update(dt);
 
   if (m_script)
-    m_script->update(m_script->updateDt());
+    m_script->update(m_script->updateDt(dt));
 
   m_itemBag->clearItems();
 
diff --git a/source/frontend/StarContainerInterface.hpp b/source/frontend/StarContainerInterface.hpp
index dee1e07..811be89 100644
--- a/source/frontend/StarContainerInterface.hpp
+++ b/source/frontend/StarContainerInterface.hpp
@@ -27,7 +27,7 @@ public:
   bool giveContainerResult(ContainerResult result);
 
 protected:
-  void update() override;
+  void update(float dt) override;
 
 private:
   enum class ExpectingSwap {
diff --git a/source/frontend/StarCraftingInterface.cpp b/source/frontend/StarCraftingInterface.cpp
index df0100a..5ad25ce 100644
--- a/source/frontend/StarCraftingInterface.cpp
+++ b/source/frontend/StarCraftingInterface.cpp
@@ -226,7 +226,7 @@ size_t CraftingPane::itemCount(List<ItemPtr> const& store, ItemDescriptor const&
   return itemDb->getCountOfItem(store, item);
 }
 
-void CraftingPane::update() {
+void CraftingPane::update(float dt) {
   // shut down if we can't reach the table anymore.
   if (m_sourceEntityId != NullEntityId) {
     auto sourceEntity = as<TileEntity>(m_worldClient->entity(m_sourceEntityId));
@@ -296,7 +296,7 @@ void CraftingPane::update() {
 
   setLabel("lblPlayerMoney", toString((int)m_player->currency("money")));
 
-  Pane::update();
+  Pane::update(dt);
 }
 
 void CraftingPane::updateCraftButtons() {
diff --git a/source/frontend/StarCraftingInterface.hpp b/source/frontend/StarCraftingInterface.hpp
index 282729a..33c1e32 100644
--- a/source/frontend/StarCraftingInterface.hpp
+++ b/source/frontend/StarCraftingInterface.hpp
@@ -34,7 +34,7 @@ private:
 
   List<ItemRecipe> determineRecipes();
 
-  virtual void update() override;
+  virtual void update(float dt) override;
   void updateCraftButtons();
   void updateAvailableRecipes();
   bool consumeIngredients(ItemRecipe& recipe, int count);
diff --git a/source/frontend/StarErrorScreen.cpp b/source/frontend/StarErrorScreen.cpp
index 9162e5b..1dc5f12 100644
--- a/source/frontend/StarErrorScreen.cpp
+++ b/source/frontend/StarErrorScreen.cpp
@@ -70,12 +70,12 @@ bool ErrorScreen::handleInputEvent(InputEvent const& event) {
   return m_paneManager->sendInputEvent(event);
 }
 
-void ErrorScreen::update() {
-  m_paneManager->update();
+void ErrorScreen::update(float dt) {
+  m_paneManager->update(dt);
+  m_cursor.update(dt);
 }
 
 void ErrorScreen::renderCursor() {
-  m_cursor.update(WorldTimestep);
   Vec2I cursorPos = m_cursorScreenPos;
   Vec2I cursorSize = m_cursor.size();
   Vec2I cursorOffset = m_cursor.offset();
diff --git a/source/frontend/StarErrorScreen.hpp b/source/frontend/StarErrorScreen.hpp
index eb1f73e..e16d6f4 100644
--- a/source/frontend/StarErrorScreen.hpp
+++ b/source/frontend/StarErrorScreen.hpp
@@ -26,7 +26,7 @@ public:
   void render(bool useBackdrop = false);
 
   bool handleInputEvent(InputEvent const& event);
-  void update();
+  void update(float dt);
 
 private:
   void renderCursor();
diff --git a/source/frontend/StarInventory.cpp b/source/frontend/StarInventory.cpp
index 850eedf..bcc2c15 100644
--- a/source/frontend/StarInventory.cpp
+++ b/source/frontend/StarInventory.cpp
@@ -236,7 +236,7 @@ bool InventoryPane::containsNewItems() const {
   return false;
 }
 
-void InventoryPane::update() {
+void InventoryPane::update(float dt) {
   auto inventory = m_player->inventory();
   auto context = Widget::context();
 
@@ -255,7 +255,7 @@ void InventoryPane::update() {
   m_trashSlot->setItem(inventory->itemsAt(TrashSlot()));
   m_trashSlot->showLinkIndicator(customBarItems.contains(m_trashSlot->item()));
   if (auto trashItem = m_trashSlot->item()) {
-    if (m_trashBurn.tick() && trashItem->count() > 0) {
+    if (m_trashBurn.tick(dt) && trashItem->count() > 0) {
       m_player->statistics()->recordEvent("trashItem", JsonObject{
           {"itemName", trashItem->name()},
           {"count", trashItem->count()},
diff --git a/source/frontend/StarInventory.hpp b/source/frontend/StarInventory.hpp
index 035045c..cb5deed 100644
--- a/source/frontend/StarInventory.hpp
+++ b/source/frontend/StarInventory.hpp
@@ -35,7 +35,7 @@ public:
   bool containsNewItems() const;
 
 protected:
-  virtual void update() override;
+  virtual void update(float dt) override;
   void selectTab(String const& selected);
 
 private:
diff --git a/source/frontend/StarMainInterface.cpp b/source/frontend/StarMainInterface.cpp
index 0dc3a01..526ab99 100644
--- a/source/frontend/StarMainInterface.cpp
+++ b/source/frontend/StarMainInterface.cpp
@@ -520,8 +520,9 @@ void MainInterface::handleInteractAction(InteractAction interactAction) {
   }
 }
 
-void MainInterface::update() {
-  m_paneManager.update();
+void MainInterface::update(float dt) {
+  m_paneManager.update(dt);
+  m_cursor.update(dt);
 
   m_questLogInterface->pollDialog(&m_paneManager);
 
@@ -544,7 +545,7 @@ void MainInterface::update() {
 
   // update mouseover target
   EntityId newMouseOverTarget = NullEntityId;
-  m_stickyTargetingTimer.tick();
+  m_stickyTargetingTimer.tick(dt);
   auto mouseoverEntities = m_client->worldClient()->query<DamageBarEntity>(RectF::withCenter(cursorWorldPos, Vec2F(1, 1)), [=](shared_ptr<DamageBarEntity> const& entity) {
       return entity != player
         && entity->damageBar() == DamageBarType::Default
@@ -578,10 +579,10 @@ void MainInterface::update() {
     if (damageBarEntity && damageBarEntity->damageBar() == DamageBarType::Special) {
       float targetHealth = damageBarEntity->health() / damageBarEntity->maxHealth();
       float fillSpeed = 1.0f / Root::singleton().assets()->json("/interface.config:specialDamageBar.fillTime").toFloat();
-      if (abs(targetHealth - m_specialDamageBarValue) < fillSpeed * WorldTimestep)
+      if (abs(targetHealth - m_specialDamageBarValue) < fillSpeed * dt)
         m_specialDamageBarValue = targetHealth;
       else
-        m_specialDamageBarValue += copysign(1.0f, targetHealth - m_specialDamageBarValue) * fillSpeed * WorldTimestep;
+        m_specialDamageBarValue += copysign(1.0f, targetHealth - m_specialDamageBarValue) * fillSpeed * dt;
     } else {
       m_specialDamageBarTarget = NullEntityId;
     }
@@ -696,7 +697,7 @@ void MainInterface::update() {
 
   for (auto it = m_messages.begin(); it != m_messages.end();) {
     auto& message = *it;
-    message->cooldown -= WorldTimestep;
+    message->cooldown -= dt;
     if (message->cooldown < 0)
       it = m_messages.erase(it);
     else
@@ -713,7 +714,7 @@ void MainInterface::update() {
 
   auto worldId = m_client->playerWorld();
   if (worldId.is<CelestialWorldId>()) {
-    if (m_planetNameTimer.tick())
+    if (m_planetNameTimer.tick(dt))
       m_paneManager.dismissRegisteredPane(MainInterfacePanes::PlanetText);
     else
       m_paneManager.displayRegisteredPane(MainInterfacePanes::PlanetText);
@@ -755,8 +756,8 @@ void MainInterface::update() {
 
   updateCursor();
 
-  m_nameplatePainter->update(m_client->worldClient(), m_worldPainter->camera(), m_client->worldClient()->interactiveHighlightMode());
-  m_questIndicatorPainter->update(m_client->worldClient(), m_worldPainter->camera());
+  m_nameplatePainter->update(dt, m_client->worldClient(), m_worldPainter->camera(), m_client->worldClient()->interactiveHighlightMode());
+  m_questIndicatorPainter->update(dt, m_client->worldClient(), m_worldPainter->camera());
 
   m_chatBubbleManager->setCamera(m_worldPainter->camera());
   if (auto worldClient = m_client->worldClient()) {
@@ -781,7 +782,7 @@ void MainInterface::update() {
     }
 
     m_chatBubbleManager->addChatActions(chatActions);
-    m_chatBubbleManager->update(worldClient);
+    m_chatBubbleManager->update(dt, worldClient);
   }
 
   if (auto container = m_client->worldClient()->get<ContainerEntity>(m_containerInteractor->openContainerId())) {
@@ -803,7 +804,7 @@ void MainInterface::update() {
       pair.second->setSize(Vec2I(m_guiContext->windowSize()));
     else
       pair.second->setSize(Vec2I(m_guiContext->windowInterfaceSize()));
-    pair.second->update();
+    pair.second->update(dt);
   }
 }
 
@@ -1427,8 +1428,6 @@ void MainInterface::renderCursor() {
   if (m_cinematicOverlay && !m_cinematicOverlay->completed())
     return m_guiContext->applicationController()->setCursorVisible(false);
 
-  m_cursor.update(WorldTimestep);
-
   Vec2I cursorPos = m_cursorScreenPos;
   Vec2I cursorSize = m_cursor.size();
   Vec2I cursorOffset = m_cursor.offset();
diff --git a/source/frontend/StarMainInterface.hpp b/source/frontend/StarMainInterface.hpp
index 9cf2342..ddc4d3d 100644
--- a/source/frontend/StarMainInterface.hpp
+++ b/source/frontend/StarMainInterface.hpp
@@ -91,7 +91,7 @@ public:
   void handleInteractAction(InteractAction interactAction);
 
   // Handles incoming client messages, aims main player, etc.
-  void update();
+  void update(float dt);
 
   // Render things e.g. quest indicators that should be drawn in the world
   // behind interface e.g. chat bubbles
diff --git a/source/frontend/StarMainMixer.cpp b/source/frontend/StarMainMixer.cpp
index d4a2e73..219daa2 100644
--- a/source/frontend/StarMainMixer.cpp
+++ b/source/frontend/StarMainMixer.cpp
@@ -23,7 +23,7 @@ void MainMixer::setWorldPainter(WorldPainterPtr worldPainter) {
   m_worldPainter = move(worldPainter);
 }
 
-void MainMixer::update(bool muteSfx, bool muteMusic) {
+void MainMixer::update(float dt, bool muteSfx, bool muteMusic) {
   auto assets = Root::singleton().assets();
 
   auto updateGroupVolume = [&](MixerGroup group, bool muted, String const& settingName) {
@@ -111,9 +111,9 @@ void MainMixer::update(bool muteSfx, bool muteMusic) {
     };
 
     if (Voice* voice = Voice::singletonPtr())
-      voice->update(attenuationFunction);
+      voice->update(dt, attenuationFunction);
 
-    m_mixer->update(attenuationFunction);
+    m_mixer->update(dt, attenuationFunction);
 
   } else {
     if (m_mixer->hasEffect("lowpass"))
@@ -122,9 +122,9 @@ void MainMixer::update(bool muteSfx, bool muteMusic) {
       m_mixer->removeEffect("echo", 0);
 
     if (Voice* voice = Voice::singletonPtr())
-      voice->update();
+      voice->update(dt);
 
-    m_mixer->update();
+    m_mixer->update(dt);
   }
 }
 
@@ -132,6 +132,10 @@ MixerPtr MainMixer::mixer() const {
   return m_mixer;
 }
 
+void MainMixer::setSpeed(float speed) {
+  m_mixer->setSpeed(max(speed, 0.0f));
+}
+
 void MainMixer::setVolume(float volume, float rampTime) {
   m_mixer->setVolume(volume, rampTime);
 }
diff --git a/source/frontend/StarMainMixer.hpp b/source/frontend/StarMainMixer.hpp
index 2582a2f..9e5ba3f 100644
--- a/source/frontend/StarMainMixer.hpp
+++ b/source/frontend/StarMainMixer.hpp
@@ -17,10 +17,11 @@ public:
   void setUniverseClient(UniverseClientPtr universeClient);
   void setWorldPainter(WorldPainterPtr worldPainter);
 
-  void update(bool muteSfx = false, bool muteMusic = false);
+  void update(float dt, bool muteSfx = false, bool muteMusic = false);
 
   MixerPtr mixer() const;
 
+  void setSpeed(float speed);
   void setVolume(float volume, float rampTime = 0.0f);
   void read(int16_t* sampleData, size_t frameCount, Mixer::ExtraMixFunction = {});
 
diff --git a/source/frontend/StarMerchantInterface.cpp b/source/frontend/StarMerchantInterface.cpp
index c4b1047..8e3ad3a 100644
--- a/source/frontend/StarMerchantInterface.cpp
+++ b/source/frontend/StarMerchantInterface.cpp
@@ -138,8 +138,8 @@ PanePtr MerchantPane::createTooltip(Vec2I const& screenPosition) {
   return {};
 }
 
-void MerchantPane::update() {
-  Pane::update();
+void MerchantPane::update(float dt) {
+  Pane::update(dt);
 
   if (!m_worldClient->playerCanReachEntity(m_sourceEntityId))
     dismiss();
diff --git a/source/frontend/StarMerchantInterface.hpp b/source/frontend/StarMerchantInterface.hpp
index a4ac0c8..d123c9b 100644
--- a/source/frontend/StarMerchantInterface.hpp
+++ b/source/frontend/StarMerchantInterface.hpp
@@ -30,7 +30,7 @@ public:
   ItemPtr addItems(ItemPtr const& items);
 
 protected:
-  void update() override;
+  void update(float dt) override;
 
 private:
   void swapSlot();
diff --git a/source/frontend/StarModsMenu.cpp b/source/frontend/StarModsMenu.cpp
index eeceb72..039a94a 100644
--- a/source/frontend/StarModsMenu.cpp
+++ b/source/frontend/StarModsMenu.cpp
@@ -51,8 +51,8 @@ ModsMenu::ModsMenu() {
   copyLinkLabel->setVisibility(!hasDesktopService);
 }
 
-void ModsMenu::update() {
-  Pane::update();
+void ModsMenu::update(float dt) {
+  Pane::update(dt);
 
   size_t selectedItem = m_modList->selectedItem();
   if (selectedItem == NPos) {
diff --git a/source/frontend/StarModsMenu.hpp b/source/frontend/StarModsMenu.hpp
index a9e8739..e73ac23 100644
--- a/source/frontend/StarModsMenu.hpp
+++ b/source/frontend/StarModsMenu.hpp
@@ -13,7 +13,7 @@ class ModsMenu : public Pane {
 public:
   ModsMenu();
 
-  void update() override;
+  void update(float dt) override;
 
 private:
   static String bestModName(JsonObject const& metadata, String const& sourcePath);
diff --git a/source/frontend/StarNameplatePainter.cpp b/source/frontend/StarNameplatePainter.cpp
index 06ffabb..c6bfe8a 100644
--- a/source/frontend/StarNameplatePainter.cpp
+++ b/source/frontend/StarNameplatePainter.cpp
@@ -28,7 +28,7 @@ NameplatePainter::NameplatePainter() {
   m_nametags.setMovementThreshold(nametagConfig.getFloat("movementThreshold"));
 }
 
-void NameplatePainter::update(WorldClientPtr const& world, WorldCamera const& camera, bool inspectionMode) {
+void NameplatePainter::update(float dt, WorldClientPtr const& world, WorldCamera const& camera, bool inspectionMode) {
   m_camera = camera;
 
   Set<EntityId> foundEntities;
@@ -70,7 +70,7 @@ void NameplatePainter::update(WorldClientPtr const& world, WorldCamera const& ca
   });
 
   m_entitiesWithNametags = move(foundEntities);
-  m_nametags.update();
+  m_nametags.update(dt);
 }
 
 void NameplatePainter::render() {
diff --git a/source/frontend/StarNameplatePainter.hpp b/source/frontend/StarNameplatePainter.hpp
index 08c7827..7c3aeb4 100644
--- a/source/frontend/StarNameplatePainter.hpp
+++ b/source/frontend/StarNameplatePainter.hpp
@@ -15,7 +15,7 @@ class NameplatePainter {
 public:
   NameplatePainter();
 
-  void update(WorldClientPtr const& world, WorldCamera const& camera, bool inspectionMode);
+  void update(float dt, WorldClientPtr const& world, WorldCamera const& camera, bool inspectionMode);
   void render();
 
 private:
diff --git a/source/frontend/StarQuestIndicatorPainter.cpp b/source/frontend/StarQuestIndicatorPainter.cpp
index d144021..cad4ace 100644
--- a/source/frontend/StarQuestIndicatorPainter.cpp
+++ b/source/frontend/StarQuestIndicatorPainter.cpp
@@ -16,7 +16,7 @@ AnimationPtr indicatorAnimation(String indicatorPath) {
   return make_shared<Animation>(assets->json(indicatorPath), indicatorPath);
 }
 
-void QuestIndicatorPainter::update(WorldClientPtr const& world, WorldCamera const& camera) {
+void QuestIndicatorPainter::update(float dt, WorldClientPtr const& world, WorldCamera const& camera) {
   m_camera = camera;
 
   Set<EntityId> foundIndicators;
@@ -30,7 +30,7 @@ void QuestIndicatorPainter::update(WorldClientPtr const& world, WorldCamera cons
     if (auto currentIndicator = m_indicators.ptr(entity->entityId())) {
       currentIndicator->screenPos = screenPos;
       if (currentIndicator->indicatorName == indicator->indicatorImage) {
-        currentIndicator->animation->update(WorldTimestep);
+        currentIndicator->animation->update(dt);
       } else {
         currentIndicator->indicatorName = indicator->indicatorImage;
         currentIndicator->animation = indicatorAnimation(indicator->indicatorImage);
diff --git a/source/frontend/StarQuestIndicatorPainter.hpp b/source/frontend/StarQuestIndicatorPainter.hpp
index 311680d..c222ac4 100644
--- a/source/frontend/StarQuestIndicatorPainter.hpp
+++ b/source/frontend/StarQuestIndicatorPainter.hpp
@@ -13,7 +13,7 @@ class QuestIndicatorPainter {
 public:
   QuestIndicatorPainter(UniverseClientPtr const& client);
 
-  void update(WorldClientPtr const& world, WorldCamera const& camera);
+  void update(float dt, WorldClientPtr const& world, WorldCamera const& camera);
   void render();
 
 private:
diff --git a/source/frontend/StarQuestInterface.cpp b/source/frontend/StarQuestInterface.cpp
index 324cbd8..d9f0b1b 100644
--- a/source/frontend/StarQuestInterface.cpp
+++ b/source/frontend/StarQuestInterface.cpp
@@ -93,12 +93,12 @@ void QuestLogInterface::pollDialog(PaneManager* paneManager) {
 
 void QuestLogInterface::displayed() {
   Pane::displayed();
-  tick();
+  tick(0);
   fetchData();
 }
 
-void QuestLogInterface::tick() {
-  Pane::tick();
+void QuestLogInterface::tick(float dt) {
+  Pane::tick(dt);
   auto selected = getSelected();
   if (selected && m_manager->hasQuest(selected->data().toString())) {
     auto quest = m_manager->getQuest(selected->data().toString());
@@ -284,7 +284,7 @@ void QuestLogInterface::showQuests(List<QuestPtr> quests) {
   }
 
   auto verticalLayout = fetchChild<VerticalLayout>("scrollArea.verticalLayout");
-  verticalLayout->update();
+  verticalLayout->update(0);
 }
 
 QuestPane::QuestPane(QuestPtr const& quest, PlayerPtr player) : Pane(), m_quest(quest), m_player(move(player)) {}
diff --git a/source/frontend/StarQuestInterface.hpp b/source/frontend/StarQuestInterface.hpp
index d7d68e8..366d4ac 100644
--- a/source/frontend/StarQuestInterface.hpp
+++ b/source/frontend/StarQuestInterface.hpp
@@ -19,7 +19,7 @@ public:
   virtual ~QuestLogInterface() {}
 
   virtual void displayed() override;
-  virtual void tick() override;
+  virtual void tick(float dt) override;
   virtual PanePtr createTooltip(Vec2I const& screenPosition) override;
 
   void fetchData();
diff --git a/source/frontend/StarQuestTracker.cpp b/source/frontend/StarQuestTracker.cpp
index cb603b4..747852a 100644
--- a/source/frontend/StarQuestTracker.cpp
+++ b/source/frontend/StarQuestTracker.cpp
@@ -71,7 +71,7 @@ bool QuestTrackerPane::sendEvent(InputEvent const& event) {
   return false;
 }
 
-void QuestTrackerPane::update() {
+void QuestTrackerPane::update(float dt) {
   if (m_currentQuest) {
     if (auto objectiveList = m_currentQuest->objectiveList()) {
       if (objectiveList->size() == 0) {
@@ -172,7 +172,7 @@ void QuestTrackerPane::update() {
     }
   }
 
-  Pane::update();
+  Pane::update(dt);
 }
 
 void QuestTrackerPane::setQuest(QuestPtr const& quest) {
diff --git a/source/frontend/StarQuestTracker.hpp b/source/frontend/StarQuestTracker.hpp
index 226b520..4fbeb7a 100644
--- a/source/frontend/StarQuestTracker.hpp
+++ b/source/frontend/StarQuestTracker.hpp
@@ -16,7 +16,7 @@ public:
   QuestTrackerPane();
 
   bool sendEvent(InputEvent const& event) override;
-  void update() override;
+  void update(float dt) override;
 
   void setQuest(QuestPtr const& quest);
 
diff --git a/source/frontend/StarRadioMessagePopup.cpp b/source/frontend/StarRadioMessagePopup.cpp
index f7c9061..503f2d1 100644
--- a/source/frontend/StarRadioMessagePopup.cpp
+++ b/source/frontend/StarRadioMessagePopup.cpp
@@ -44,9 +44,9 @@ RadioMessagePopup::RadioMessagePopup() {
   enterStage(PopupStage::Hidden);
 }
 
-void RadioMessagePopup::update() {
+void RadioMessagePopup::update(float dt) {
   if (messageActive()) {
-    if (m_stageTimer.tick())
+    if (m_stageTimer.tick(dt))
       nextPopupStage();
 
     if (m_popupStage == PopupStage::AnimateIn) {
@@ -65,11 +65,11 @@ void RadioMessagePopup::update() {
       setBG("", strf("{}:{}", m_animateOutImage, frame), "");
     }
 
-    m_slideTimer = min(m_slideTimer + WorldTimestep, m_slideTime);
+    m_slideTimer = min(m_slideTimer + dt, m_slideTime);
     updateAnchorOffset();
   }
 
-  Pane::update();
+  Pane::update(dt);
 }
 
 void RadioMessagePopup::dismissed() {
diff --git a/source/frontend/StarRadioMessagePopup.hpp b/source/frontend/StarRadioMessagePopup.hpp
index 11c18d5..d1d6c11 100644
--- a/source/frontend/StarRadioMessagePopup.hpp
+++ b/source/frontend/StarRadioMessagePopup.hpp
@@ -16,7 +16,7 @@ class RadioMessagePopup : public Pane {
 public:
   RadioMessagePopup();
 
-  void update() override;
+  void update(float dt) override;
   void dismissed() override;
 
   bool messageActive();
diff --git a/source/frontend/StarScriptPane.cpp b/source/frontend/StarScriptPane.cpp
index 3de3c26..2cd74a5 100644
--- a/source/frontend/StarScriptPane.cpp
+++ b/source/frontend/StarScriptPane.cpp
@@ -47,11 +47,11 @@ void ScriptPane::dismissed() {
   m_script.removeCallbacks("world");
 }
 
-void ScriptPane::tick() {
+void ScriptPane::tick(float dt) {
   if (m_sourceEntityId != NullEntityId && !m_client->worldClient()->playerCanReachEntity(m_sourceEntityId))
     dismiss();
 
-  BaseScriptPane::tick();
+  BaseScriptPane::tick(dt);
 }
 
 PanePtr ScriptPane::createTooltip(Vec2I const& screenPosition) {
diff --git a/source/frontend/StarScriptPane.hpp b/source/frontend/StarScriptPane.hpp
index 229ebbb..e7ed2ae 100644
--- a/source/frontend/StarScriptPane.hpp
+++ b/source/frontend/StarScriptPane.hpp
@@ -16,7 +16,7 @@ public:
   void displayed() override;
   void dismissed() override;
 
-  void tick() override;
+  void tick(float dt) override;
 
   PanePtr createTooltip(Vec2I const& screenPosition) override;
 
diff --git a/source/frontend/StarStatusPane.cpp b/source/frontend/StarStatusPane.cpp
index e325a88..d1bedbb 100644
--- a/source/frontend/StarStatusPane.cpp
+++ b/source/frontend/StarStatusPane.cpp
@@ -58,8 +58,8 @@ void StatusPane::renderImpl() {
   }
 }
 
-void StatusPane::update() {
-  Pane::update();
+void StatusPane::update(float dt) {
+  Pane::update(dt);
 
   auto assets = Root::singleton().assets();
   auto interfaceScale = m_guiContext->interfaceScale();
diff --git a/source/frontend/StarStatusPane.hpp b/source/frontend/StarStatusPane.hpp
index 54a87a3..5deba33 100644
--- a/source/frontend/StarStatusPane.hpp
+++ b/source/frontend/StarStatusPane.hpp
@@ -18,7 +18,7 @@ public:
 
 protected:
   virtual void renderImpl() override;
-  virtual void update() override;
+  virtual void update(float dt) override;
 
 private:
   struct StatusEffectIndicator {
diff --git a/source/frontend/StarTeamBar.cpp b/source/frontend/StarTeamBar.cpp
index 06b3ee7..192edfa 100644
--- a/source/frontend/StarTeamBar.cpp
+++ b/source/frontend/StarTeamBar.cpp
@@ -80,8 +80,8 @@ void TeamBar::acceptInvitation(Uuid const& inviterUuid) {
   m_client->teamClient()->acceptInvitation(inviterUuid);
 }
 
-void TeamBar::update() {
-  Pane::update();
+void TeamBar::update(float dt) {
+  Pane::update(dt);
 
   updatePlayerResources();
 
@@ -338,7 +338,7 @@ void TeamMemberMenu::open(Uuid memberUuid, Vec2I position) {
   Pane::show();
 }
 
-void TeamMemberMenu::update() {
+void TeamMemberMenu::update(float dt) {
   auto stillValid = false;
   auto members = m_owner->m_client->teamClient()->members();
   for (auto member : members) {
@@ -355,7 +355,7 @@ void TeamMemberMenu::update() {
 
   updateWidgets();
 
-  Pane::update();
+  Pane::update(dt);
 }
 
 void TeamMemberMenu::updateWidgets() {
diff --git a/source/frontend/StarTeamBar.hpp b/source/frontend/StarTeamBar.hpp
index 8273ab6..9ebbb50 100644
--- a/source/frontend/StarTeamBar.hpp
+++ b/source/frontend/StarTeamBar.hpp
@@ -52,7 +52,7 @@ public:
 
   void open(Uuid memberUuid, Vec2I position);
 
-  virtual void update() override;
+  virtual void update(float dt) override;
 
 private:
   void updateWidgets();
@@ -77,7 +77,7 @@ public:
   void acceptInvitation(Uuid const& inviterUuid);
 
 protected:
-  virtual void update() override;
+  virtual void update(float dt) override;
 
 private:
   void updatePlayerResources();
diff --git a/source/frontend/StarTeleportDialog.cpp b/source/frontend/StarTeleportDialog.cpp
index 76f0310..01c6a69 100644
--- a/source/frontend/StarTeleportDialog.cpp
+++ b/source/frontend/StarTeleportDialog.cpp
@@ -120,7 +120,7 @@ TeleportDialog::TeleportDialog(UniverseClientPtr client,
   fetchChild<ButtonWidget>("btnTeleport")->setEnabled(destList->selectedItem() != NPos);
 }
 
-void TeleportDialog::tick() {
+void TeleportDialog::tick(float dt) {
   if (!m_client->worldClient()->playerCanReachEntity(m_sourceEntityId))
     dismiss();
 }
diff --git a/source/frontend/StarTeleportDialog.hpp b/source/frontend/StarTeleportDialog.hpp
index 445f73a..3dea84d 100644
--- a/source/frontend/StarTeleportDialog.hpp
+++ b/source/frontend/StarTeleportDialog.hpp
@@ -19,7 +19,7 @@ public:
       EntityId sourceEntityId,
       TeleportBookmark currentLocation);
 
-  void tick() override;
+  void tick(float dt) override;
 
   void selectDestination();
   void teleport();
diff --git a/source/frontend/StarTitleScreen.cpp b/source/frontend/StarTitleScreen.cpp
index 842efc9..f9f16bd 100644
--- a/source/frontend/StarTitleScreen.cpp
+++ b/source/frontend/StarTitleScreen.cpp
@@ -114,15 +114,17 @@ bool TitleScreen::handleInputEvent(InputEvent const& event) {
   return m_paneManager.sendInputEvent(event);
 }
 
-void TitleScreen::update() {
+void TitleScreen::update(float dt) {
+  m_cursor.update(dt);
+
   for (auto p : m_rightAnchoredButtons)
     p.first->setPosition(Vec2I(m_guiContext->windowWidth() / m_guiContext->interfaceScale(), 0) + p.second);
   m_mainMenu->determineSizeFromChildren();
 
-  m_skyBackdrop->update();
-  m_environmentPainter->update();
+  m_skyBackdrop->update(dt);
+  m_environmentPainter->update(dt);
 
-  m_paneManager.update();
+  m_paneManager.update(dt);
 
   if (!finishedState()) {
     if (auto audioSample = m_musicTrackManager.updateAmbient(m_musicTrack, m_skyBackdrop->isDayTime())) {
@@ -423,7 +425,6 @@ void TitleScreen::back() {
 void TitleScreen::renderCursor() {
   auto assets = Root::singleton().assets();
 
-  m_cursor.update(WorldTimestep);
   Vec2I cursorPos = m_cursorScreenPos;
   Vec2I cursorSize = m_cursor.size();
   Vec2I cursorOffset = m_cursor.offset();
diff --git a/source/frontend/StarTitleScreen.hpp b/source/frontend/StarTitleScreen.hpp
index 5ce000d..87ce0c8 100644
--- a/source/frontend/StarTitleScreen.hpp
+++ b/source/frontend/StarTitleScreen.hpp
@@ -47,7 +47,7 @@ public:
   void render();
 
   bool handleInputEvent(InputEvent const& event);
-  void update();
+  void update(float dt);
 
   bool textInputActive() const;
 
diff --git a/source/frontend/StarVoice.cpp b/source/frontend/StarVoice.cpp
index 82205bd..d72bc57 100644
--- a/source/frontend/StarVoice.cpp
+++ b/source/frontend/StarVoice.cpp
@@ -420,7 +420,7 @@ void Voice::mix(int16_t* buffer, size_t frameCount, unsigned channels) {
 	}
 }
 
-void Voice::update(PositionalAttenuationFunction positionalAttenuationFunction) {
+void Voice::update(float dt, PositionalAttenuationFunction positionalAttenuationFunction) {
   for (auto& entry : m_speakers) {
     if (SpeakerPtr& speaker = entry.second) {
 			if (positionalAttenuationFunction) {
diff --git a/source/frontend/StarVoice.hpp b/source/frontend/StarVoice.hpp
index 95046af..f776cb7 100644
--- a/source/frontend/StarVoice.hpp
+++ b/source/frontend/StarVoice.hpp
@@ -136,7 +136,7 @@ public:
   void mix(int16_t* buffer, size_t frames, unsigned channels);
 
   typedef function<float(unsigned, Vec2F, float)> PositionalAttenuationFunction;
-  void update(PositionalAttenuationFunction positionalAttenuationFunction = {});
+  void update(float dt, PositionalAttenuationFunction positionalAttenuationFunction = {});
 
   void setDeviceName(Maybe<String> device);
   StringList availableDevices();
diff --git a/source/frontend/StarWireInterface.cpp b/source/frontend/StarWireInterface.cpp
index 1cec9e8..61506fe 100644
--- a/source/frontend/StarWireInterface.cpp
+++ b/source/frontend/StarWireInterface.cpp
@@ -35,7 +35,7 @@ void WirePane::reset() {
   m_connecting = false;
 }
 
-void WirePane::update() {
+void WirePane::update(float dt) {
   if (!active())
     return;
   if (!m_worldClient->inWorld()) {
diff --git a/source/frontend/StarWireInterface.hpp b/source/frontend/StarWireInterface.hpp
index 6c124a7..f1c44d2 100644
--- a/source/frontend/StarWireInterface.hpp
+++ b/source/frontend/StarWireInterface.hpp
@@ -16,7 +16,7 @@ public:
   WirePane(WorldClientPtr worldClient, PlayerPtr player, WorldPainterPtr worldPainter);
   virtual ~WirePane() {}
 
-  virtual void update() override;
+  virtual void update(float dt) override;
   virtual bool sendEvent(InputEvent const& event) override;
 
   virtual SwingResult swing(WorldGeometry const& geometry, Vec2F position, FireMode mode) override;