Remove dt

src/gui/console/ConsoleView.cpp

@@ -116,7 +116,7 @@ void ConsoleView::OnDraw()
 	g->BlendLine(Position + Vec2{ 0, Size.Y }, Position + Size, 0xFFFFFF_rgb .WithAlpha(200));
 }
 
-void ConsoleView::OnTick(float dt)
+void ConsoleView::OnTick()
 {
 	if (doClose)
 	{

src/gui/console/ConsoleView.h

@@ -21,7 +21,7 @@ class ConsoleView: public ui::Window
 public:
 	ConsoleView();
 	void OnDraw() override;
-	void OnTick(float dt) override;
+	void OnTick() override;
 	void DoKeyPress(int key, int scan, bool repeat, bool shift, bool ctrl, bool alt) override;
 	void DoTextInput(String text) override;
 	void AttachController(ConsoleController * c_) { c = c_; }

src/gui/elementsearch/ElementSearchActivity.cpp

@@ -24,7 +24,6 @@ ElementSearchActivity::ElementSearchActivity(GameController * gameController, st
 	gameController(gameController),
 	tools(tools),
 	toolTip(""),
-	toolTipPresence(0),
 	shiftPressed(false),
 	ctrlPressed(false),
 	altPressed(false),
@@ -231,22 +230,17 @@ void ElementSearchActivity::OnDraw()
 	}
 }
 
-void ElementSearchActivity::OnTick(float dt)
+void ElementSearchActivity::OnTick()
 {
 	if (exit)
 		Exit();
+
 	if (isToolTipFadingIn)
 	{
 		isToolTipFadingIn = false;
-		if (toolTipPresence < 120)
-			toolTipPresence += int(dt*2)>1?int(dt*2):2;
-	}
-	else if (toolTipPresence>0)
-	{
-		toolTipPresence -= int(dt)>0?int(dt):1;
-		if (toolTipPresence<0)
-			toolTipPresence = 0;
+		toolTipPresence.MarkGoingUpwardThisTick();
 	}
+	toolTipPresence.Tick();
 }
 
 void ElementSearchActivity::OnKeyPress(int key, int scan, bool repeat, bool shift, bool ctrl, bool alt)

src/gui/elementsearch/ElementSearchActivity.h

@@ -2,6 +2,7 @@
 #include "Activity.h"
 #include "common/String.h"
 #include "gui/interface/Point.h"
+#include "gui/interface/Fade.h"
 #include <vector>
 
 class Tool;
@@ -23,7 +24,7 @@ class ElementSearchActivity: public WindowActivity
 	std::vector<ToolButton*> toolButtons;
 	ui::ScrollPanel *scrollPanel = nullptr;
 	String toolTip;
-	int toolTipPresence;
+	ui::Fade toolTipPresence{ 0, 0, 120, 120, 60, 1000 };
 	bool shiftPressed;
 	bool ctrlPressed;
 	bool altPressed;
@@ -36,7 +37,7 @@ public:
 	ElementSearchActivity(GameController * gameController, std::vector<Tool*> tools);
 	void SetActiveTool(int selectionState, Tool * tool);
 	virtual ~ElementSearchActivity();
-	void OnTick(float dt) override;
+	void OnTick() override;
 	void OnKeyPress(int key, int scan, bool repeat, bool shift, bool ctrl, bool alt) override;
 	void OnKeyRelease(int key, int scan, bool repeat, bool shift, bool ctrl, bool alt) override;
 	void OnDraw() override;

src/gui/filebrowser/FileBrowserActivity.cpp

@@ -259,7 +259,7 @@ void FileBrowserActivity::NotifyStatus(Task * task)
 
 }
 
-void FileBrowserActivity::OnTick(float dt)
+void FileBrowserActivity::OnTick()
 {
 	if(loadFiles)
 		loadFiles->Poll();
@@ -283,7 +283,7 @@ void FileBrowserActivity::OnTick(float dt)
 							ui::Point(buttonWidth, buttonHeight),
 							saveFile.get());
 			saveButton->AddContextMenu(1);
-			saveButton->Tick(dt);
+			saveButton->Tick();
 			saveButton->SetActionCallback({
 				[this, i] { SelectSave(i); },
 				[this, i] { RenameSave(i); },

src/gui/filebrowser/FileBrowserActivity.h

@@ -48,7 +48,7 @@ public:
 	virtual ~FileBrowserActivity();
 	
 	void OnDraw() override;
-	void OnTick(float dt) override;
+	void OnTick() override;
 	void OnTryExit(ExitMethod method) override;
 	void OnMouseDown(int x, int y, unsigned button) override;
 	void loadDirectory(ByteString directory, ByteString search);

src/gui/game/GameView.cpp

@@ -185,16 +185,12 @@ GameView::GameView():
 	currentSaveType(0),
 	lastMenu(-1),
 
-	toolTipPresence(0),
 	toolTip(""),
 	isToolTipFadingIn(false),
 	toolTipPosition(-1, -1),
-	infoTipPresence(0),
 	infoTip(""),
-	buttonTipShow(0),
 	buttonTip(""),
 	isButtonTipFadingIn(false),
-	introText(2048),
 	introTextMessage(IntroText().FromUtf8()),
 
 	doScreenshot(false),
@@ -1728,7 +1724,7 @@ void GameView::SkipIntroText()
 	introText = 0;
 }
 
-void GameView::OnTick(float dt)
+void GameView::OnTick()
 {
 	if (selectMode == PlaceSave && !placeSaveThumb)
 		selectMode = SelectNone;
@@ -1786,50 +1782,20 @@ void GameView::OnTick(float dt)
 		}
 	}
 
-	if(introText)
-	{
-		introText -= int(dt)>0?(int(dt) < 5? int(dt):5):1;
-		if(introText < 0)
-			introText  = 0;
-	}
-	if(infoTipPresence>0)
-	{
-		infoTipPresence -= int(dt)>0?int(dt):1;
-		if(infoTipPresence<0)
-			infoTipPresence = 0;
-	}
+	introText.Tick();
+	infoTipPresence.Tick();
 	if (isButtonTipFadingIn || (selectMode != PlaceSave && selectMode != SelectNone))
 	{
 		isButtonTipFadingIn = false;
-		if(buttonTipShow < 120)
-		{
-			buttonTipShow += int(dt*2)>0?int(dt*2):1;
-			if(buttonTipShow>120)
-				buttonTipShow = 120;
-		}
-	}
-	else if(buttonTipShow>0)
-	{
-		buttonTipShow -= int(dt)>0?int(dt):1;
-		if(buttonTipShow<0)
-			buttonTipShow = 0;
+		buttonTipShow.MarkGoingUpwardThisTick();
 	}
+	buttonTipShow.Tick();
 	if (isToolTipFadingIn)
 	{
 		isToolTipFadingIn = false;
-		if(toolTipPresence < 120)
-		{
-			toolTipPresence += int(dt*2)>0?int(dt*2):1;
-			if(toolTipPresence>120)
-				toolTipPresence = 120;
-		}
-	}
-	else if(toolTipPresence>0)
-	{
-		toolTipPresence -= int(dt)>0?int(dt):1;
-		if(toolTipPresence<0)
-			toolTipPresence = 0;
+		toolTipPresence.MarkGoingUpwardThisTick();
 	}
+	toolTipPresence.Tick();
 }
 
 void GameView::OnSimTick()
@@ -2639,7 +2605,7 @@ void GameView::OnDraw()
 	//Tooltips
 	if(infoTipPresence)
 	{
-		int infoTipAlpha = (infoTipPresence>50?50:infoTipPresence)*5;
+		int infoTipAlpha = (infoTipPresence>50?50:int(infoTipPresence))*5;
 		g->BlendTextOutline({ (XRES - (Graphics::TextSize(infoTip).X - 1)) / 2, YRES / 2 - 2 }, infoTip, 0xFFFFFF_rgb .WithAlpha(infoTipAlpha));
 	}
 

src/gui/game/GameView.h

@@ -1,6 +1,7 @@
 #pragma once
 #include "common/String.h"
 #include "gui/interface/Window.h"
+#include "gui/interface/Fade.h"
 #include "simulation/Sample.h"
 #include "graphics/FindingElement.h"
 #include "graphics/RendererFrame.h"
@@ -65,16 +66,16 @@ private:
 	int currentSaveType;
 	int lastMenu;
 
-	int toolTipPresence;
+	ui::Fade toolTipPresence{ 0, 0, 120, 120, 60, 1000 };
 	String toolTip;
 	bool isToolTipFadingIn;
 	ui::Point toolTipPosition;
-	int infoTipPresence;
+	ui::Fade infoTipPresence{ 0, 0, 120, 60, 60, 1000 };
 	String infoTip;
-	int buttonTipShow;
+	ui::Fade buttonTipShow{ 0, 0, 120, 120, 60, 1000 };
 	String buttonTip;
 	bool isButtonTipFadingIn;
-	int introText;
+	ui::Fade introText{ 2048, 0, 10000, 60, 60, 1000 };
 	String introTextMessage;
 
 	bool doScreenshot;
@@ -246,7 +247,7 @@ public:
 	void OnMouseWheel(int x, int y, int d) override;
 	void OnKeyPress(int key, int scan, bool repeat, bool shift, bool ctrl, bool alt) override;
 	void OnKeyRelease(int key, int scan, bool repeat, bool shift, bool ctrl, bool alt) override;
-	void OnTick(float dt) override;
+	void OnTick() override;
 	void OnSimTick() override;
 	void OnDraw() override;
 	void OnBlur() override;

src/gui/interface/AvatarButton.cpp

@@ -19,7 +19,7 @@ AvatarButton::AvatarButton(Point position, Point size, ByteString username, int
 
 }
 
-void AvatarButton::Tick(float dt)
+void AvatarButton::Tick()
 {
 	if (!avatar && !tried && name.size() > 0)
 	{

src/gui/interface/AvatarButton.h

@@ -38,7 +38,7 @@ public:
 	void OnContextMenuAction(int item) override;
 
 	void Draw(const Point& screenPos) override;
-	void Tick(float dt) override;
+	void Tick() override;
 
 	void DoAction();
 

src/gui/interface/Component.cpp

@@ -157,7 +157,7 @@ void Component::Draw(const Point& screenPos)
 	drawn = true;
 }
 
-void Component::Tick(float dt)
+void Component::Tick()
 {
 }
 

src/gui/interface/Component.h

@@ -69,10 +69,8 @@ namespace ui
 
 		///
 		// Called: Every tick.
-		// Params:
-		//	dt: The change in time.
 		///
-		virtual void Tick(float dt);
+		virtual void Tick();
 
 		///
 		// Called: When ready to draw.

src/gui/interface/Engine.cpp

@@ -17,7 +17,7 @@ Engine::Engine():
 	windowTargetPosition(0, 0),
 	FastQuit(1),
 	GlobalQuit(true),
-	lastTick(0),
+	lastTick(Platform::GetTime()),
 	mouseb_(0),
 	mousex_(0),
 	mousey_(0),

src/gui/interface/Fade.cpp

@@ -0,0 +1,54 @@
+#include "Fade.h"
+#include "Engine.h"
+#include <algorithm>
+
+namespace ui
+{
+	constexpr int64_t bias = 1000;
+
+	void Fade::SetRange(int newMinValue, int newMaxValue)
+	{
+		minValueBiased = int64_t(newMinValue) * bias;
+		maxValueBiased = int64_t(newMaxValue) * bias;
+		SetValue(newMinValue);
+	}
+
+	void Fade::SetRateOfChange(int changeUpward, int changeDownward, int ticks)
+	{
+		changeUpwardBiased = changeUpward * bias / ticks;
+		changeDownwardBiased = changeDownward * bias / ticks;
+	}
+
+	void Fade::MarkGoingUpwardThisTick()
+	{
+		goingUpwardThisTick = true;
+	}
+
+	void Fade::Tick()
+	{
+		auto nextGoingUpward = goingUpwardThisTick;
+		goingUpwardThisTick = false;
+		if (goingUpward != nextGoingUpward)
+		{
+			SetValue(GetValue());
+			goingUpward = nextGoingUpward;
+		}
+	}
+
+	void Fade::SetValue(int newValue)
+	{
+		uint64_t now = Engine::Ref().LastTick();
+		referenceValueBiased = newValue * bias;
+		referenceTime = now;
+	}
+
+	int Fade::GetValue() const
+	{
+		uint64_t now = Engine::Ref().LastTick();
+		auto minValueNow = goingUpward ? referenceValueBiased : minValueBiased;
+		auto maxValueNow = goingUpward ? maxValueBiased : referenceValueBiased;
+		auto changeNow   = goingUpward ? changeUpwardBiased : changeDownwardBiased;
+		auto diff = std::min(int64_t(now - referenceTime), (maxValueNow - minValueNow) / changeNow);
+		return int(goingUpward ? (minValueNow + changeNow * diff) : (maxValueNow - changeNow * diff)) / bias;
+	}
+}

src/gui/interface/Fade.h

@@ -0,0 +1,43 @@
+#pragma once
+#include <cstdint>
+
+namespace ui
+{
+	class Fade
+	{
+	public:
+		int64_t minValueBiased;       // real value * 1000
+		int64_t maxValueBiased;       // real value * 1000
+		int64_t referenceValueBiased; // real value * 1000
+		int64_t changeUpwardBiased;   // real value * 1000
+		int64_t changeDownwardBiased; // real value * 1000
+		bool goingUpwardThisTick = false;
+		bool goingUpward = false;
+		uint64_t referenceTime = 0;
+
+		Fade(int currentValue, int minValue, int maxValue, int changeUpward, int changeDownward, int ticks)
+		{
+			SetRange(minValue, maxValue);
+			SetRateOfChange(changeUpward, changeDownward, ticks);
+			SetValue(currentValue);
+		}
+
+		void SetRange(int newMinValue, int newMaxValue);
+		void SetRateOfChange(int changeUpward, int changeDownward, int ticks);
+		void MarkGoingUpwardThisTick(); // this is retained until the next Tick call
+		void Tick();
+		void SetValue(int newValue);
+		int GetValue() const;
+
+		operator int() const
+		{
+			return GetValue();
+		}
+
+		Fade &operator =(int newValue)
+		{
+			SetValue(newValue);
+			return *this;
+		}
+	};
+}

src/gui/interface/Label.cpp

@@ -166,7 +166,7 @@ void Label::OnMouseMoved(int localx, int localy)
 	}
 }
 
-void Label::Tick(float dt)
+void Label::Tick()
 {
 	if (multiline)
 	{

src/gui/interface/Label.h

@@ -63,6 +63,6 @@ namespace ui
 		void OnMouseMoved(int localx, int localy) override;
 		void OnKeyPress(int key, int scan, bool repeat, bool shift, bool ctrl, bool alt) override;
 		void Draw(const Point& screenPos) override;
-		void Tick(float dt) override;
+		void Tick() override;
 	};
 }

src/gui/interface/Panel.cpp

@@ -87,14 +87,14 @@ void Panel::Draw(const Point& screenPos)
 	GetGraphics()->SwapClipRect(clip); // apply old cliprect
 }
 
-void Panel::Tick(float dt)
+void Panel::Tick()
 {
 	// tick ourself first
-	XTick(dt);
+	XTick();
 
 	// tick our children
 	for(unsigned i = 0; i < children.size(); ++i)
-		children[i]->Tick(dt);
+		children[i]->Tick();
 }
 
 void Panel::OnKeyPress(int key, int scan, bool repeat, bool shift, bool ctrl, bool alt)
@@ -305,7 +305,7 @@ void Panel::XDraw(const Point& screenPos)
 {
 }
 
-void Panel::XTick(float dt)
+void Panel::XTick()
 {
 }
 

src/gui/interface/Panel.h

@@ -47,7 +47,7 @@ namespace ui
 		//Get child of this component by index.
 		Component* GetChild(unsigned idx);
 
-		void Tick(float dt) override;
+		void Tick() override;
 		void Draw(const Point& screenPos) override;
 
 		void OnMouseHover(int localx, int localy) override;
@@ -67,7 +67,7 @@ namespace ui
 		std::vector<ui::Component*> children;
 
 		// Overridable. Called by XComponent::Tick()
-		virtual void XTick(float dt);
+		virtual void XTick();
 
 		// Overridable. Called by XComponent::Draw()
 		virtual void XDraw(const Point& screenPos);

src/gui/interface/ProgressBar.cpp

@@ -3,6 +3,7 @@
 #include "graphics/Graphics.h"
 
 #include "gui/Style.h"
+#include "gui/interface/Engine.h"
 
 #include <algorithm>
 
@@ -73,9 +74,7 @@ void ProgressBar::Draw(const Point &screenPos)
 	}
 }
 
-void ProgressBar::Tick(float dt)
+void ProgressBar::Tick()
 {
-	intermediatePos += 1.0f*dt;
-	if(intermediatePos>100.0f)
-		intermediatePos = 0.0f;
+	intermediatePos = std::fmod(ui::Engine::Ref().LastTick() / 600.f, 100.f);
 }

src/gui/interface/ProgressBar.h

@@ -16,6 +16,6 @@ namespace ui
 		void SetStatus(String status);
 		String GetStatus();
 		void Draw(const Point & screenPos) override;
-		void Tick(float dt) override;
+		void Tick() override;
 	};
 }

src/gui/interface/SaveButton.cpp

@@ -116,7 +116,7 @@ SaveButton::~SaveButton()
 	}
 }
 
-void SaveButton::Tick(float dt)
+void SaveButton::Tick()
 {
 	if (!thumbnail)
 	{

src/gui/interface/SaveButton.h

@@ -59,7 +59,7 @@ public:
 	void OnContextMenuAction(int item) override;
 
 	void Draw(const Point& screenPos) override;
-	void Tick(float dt) override;
+	void Tick() override;
 
 	void SetSelected(bool selected_) { selected = selected_; }
 	bool GetSelected() { return selected; }

src/gui/interface/ScrollPanel.cpp

@@ -171,7 +171,7 @@ void ScrollPanel::XOnMouseMoved(int x, int y)
 	}
 }
 
-void ScrollPanel::XTick(float dt)
+void ScrollPanel::XTick()
 {
 	auto oldViewportPositionY = ViewportPosition.Y;
 

src/gui/interface/ScrollPanel.h

@@ -39,7 +39,7 @@ namespace ui
 		void SetScrollPosition(int position);
 
 		void Draw(const Point& screenPos) override;
-		void XTick(float dt) override;
+		void XTick() override;
 		void XOnMouseWheelInside(int localx, int localy, int d) override;
 		void XOnMouseDown(int localx, int localy, unsigned int button) override;
 		void XOnMouseUp(int x, int y, unsigned int button) override;

src/gui/interface/Spinner.cpp

@@ -9,7 +9,7 @@ Spinner::Spinner(Point position, Point size):
 	tickInternal(0)
 {
 }
-void Spinner::Tick(float dt)
+void Spinner::Tick()
 {
 	tickInternal++;
 	if(tickInternal == 4)

src/gui/interface/Spinner.h

@@ -10,7 +10,7 @@ class Spinner: public Component
 	int tickInternal;
 public:
 	Spinner(Point position, Point size);
-	void Tick(float dt) override;
+	void Tick() override;
 	void Draw(const Point& screenPos) override;
 	virtual ~Spinner();
 };

src/gui/interface/Textbox.cpp

@@ -247,9 +247,9 @@ bool Textbox::StringValid(String text)
 	return true;
 }
 
-void Textbox::Tick(float dt)
+void Textbox::Tick()
 {
-	Label::Tick(dt);
+	Label::Tick();
 	auto tp = textPosition - Vec2{ scrollX, 0 };
 	if (GetParentWindow() && Visible && Enabled && IsFocused())
 	{

src/gui/interface/Textbox.h

@@ -51,7 +51,7 @@ public:
 	bool CharacterValid(int character);
 	bool StringValid(String text);
 
-	void Tick(float dt) override;
+	void Tick() override;
 	void OnContextMenuAction(int item) override;
 	void OnMouseDown(int x, int y, unsigned button) override;
 	void OnMouseUp(int x, int y, unsigned button) override;

src/gui/interface/Window.cpp

@@ -260,13 +260,13 @@ void Window::DoTick()
 	//tick
 	for (int i = 0, sz = Components.size(); i < sz && !halt; ++i)
 	{
-		Components[i]->Tick(dt);
+		Components[i]->Tick();
 	}
 
 	halt = false;
 	stop = false;
 
-	OnTick(dt);
+	OnTick();
 
 	if (destruct)
 		finalise();
@@ -614,26 +614,9 @@ void Window::Halt()
 void Window::SetFps(float newFps)
 {
 	fps = newFps;
-	if (std::holds_alternative<FpsLimitExplicit>(fpsLimit))
-	{
-		dt = 60/fps;
-	}
-	else
-	{
-		dt = 1.0f;
-	}
 }
 
 void Window::SetFpsLimit(FpsLimit newFpsLimit)
 {
 	fpsLimit = newFpsLimit;
-	// Populate dt with whatever that makes any sort of sense.
-	if (auto *explicitFpsLimit = std::get_if<FpsLimitExplicit>(&fpsLimit))
-	{
-		SetFps(explicitFpsLimit->value);
-	}
-	else
-	{
-		SetFps(1);
-	}
 }

src/gui/interface/Window.h

@@ -104,7 +104,7 @@ namespace ui
 
 		virtual void OnInitialized() {}
 		virtual void OnExit() {}
-		virtual void OnTick(float dt) {}
+		virtual void OnTick() {}
 		virtual void OnSimTick() {}
 		virtual void OnDraw() {}
 		virtual void OnFocus() {}
@@ -134,7 +134,6 @@ namespace ui
 		bool destruct;
 		bool stop;
 
-		float dt;
 		float fps;
 		FpsLimit fpsLimit = FpsLimitFollowDraw{};
 	};

src/gui/interface/meson.build

@@ -7,6 +7,7 @@ gui_files += files(
 	'CopyTextButton.cpp',
 	'DirectionSelector.cpp',
 	'DropDown.cpp',
+	'Fade.cpp',
 	'Engine.cpp',
 	'Label.cpp',
 	'Panel.cpp',

src/gui/localbrowser/LocalBrowserView.cpp

@@ -68,7 +68,7 @@ void LocalBrowserView::textChanged()
 	lastChanged = GetTicks()+600;
 }
 
-void LocalBrowserView::OnTick(float dt)
+void LocalBrowserView::OnTick()
 {
 	c->Update();
 	if (changed && lastChanged < GetTicks())

src/gui/localbrowser/LocalBrowserView.h

@@ -31,7 +31,7 @@ class LocalBrowserView: public ui::Window {
 public:
 	LocalBrowserView();
 	//virtual void OnDraw();
-	void OnTick(float dt) override;
+	void OnTick() override;
 	void AttachController(LocalBrowserController * c_) { c = c_; }
 	void NotifyPageChanged(LocalBrowserModel * sender);
 	void NotifySavesListChanged(LocalBrowserModel * sender);

src/gui/login/LoginView.cpp

@@ -108,7 +108,7 @@ void LoginView::NotifyStatusChanged(LoginModel * sender)
 	}
 }
 
-void LoginView::OnTick(float dt)
+void LoginView::OnTick()
 {
 	c->Tick();
 	//if(targetSize != Size)

src/gui/login/LoginView.h

@@ -27,5 +27,5 @@ public:
 	void AttachController(LoginController * c_) { c = c_; }
 	void NotifyStatusChanged(LoginModel * sender);
 	void OnDraw() override;
-	void OnTick(float dt) override;
+	void OnTick() override;
 };

src/gui/options/OptionsView.cpp

@@ -574,7 +574,7 @@ void OptionsView::AttachController(OptionsController * c_)
 	c = c_;
 }
 
-void OptionsView::OnTick(float dt)
+void OptionsView::OnTick()
 {
 	UpdateStartupRequestStatus();
 }

src/gui/options/OptionsView.h

@@ -58,6 +58,6 @@ public:
 	void NotifySettingsChanged(OptionsModel * sender);
 	void AttachController(OptionsController * c_);
 	void OnDraw() override;
-	void OnTick(float dt) final override;
+	void OnTick() final override;
 	void OnTryExit(ExitMethod method) override;
 };

src/gui/preview/PreviewView.cpp

@@ -363,7 +363,7 @@ void PreviewView::OnDraw()
 	}
 }
 
-void PreviewView::OnTick(float dt)
+void PreviewView::OnTick()
 {
 	if(addCommentBox)
 	{

src/gui/preview/PreviewView.h

@@ -94,7 +94,7 @@ public:
 	void SaveLoadingError(String errorMessage);
 	void OnDraw() override;
 	void DoDraw() override;
-	void OnTick(float dt) override;
+	void OnTick() override;
 	void OnTryExit(ExitMethod method) override;
 	void OnMouseWheel(int x, int y, int d) override;
 	void OnMouseUp(int x, int y, unsigned int button) override;

src/gui/profile/ProfileActivity.cpp

@@ -197,7 +197,7 @@ void ProfileActivity::setUserInfo(UserInfo newInfo)
 	scrollPanel->InnerSize = ui::Point(Size.X, currentY);
 }
 
-void ProfileActivity::OnTick(float dt)
+void ProfileActivity::OnTick()
 {
 	if (doError)
 	{

src/gui/profile/ProfileActivity.h

@@ -33,7 +33,7 @@ class ProfileActivity: public WindowActivity {
 public:
 	ProfileActivity(ByteString username);
 	virtual ~ProfileActivity();
-	void OnTick(float dt) override;
+	void OnTick() override;
 	void OnDraw() override;
 	void OnTryExit(ExitMethod method) override;
 

src/gui/render/RenderView.cpp

@@ -23,7 +23,6 @@ RenderView::RenderView():
 	ui::Window(ui::Point(0, 0), ui::Point(XRES, WINDOWH)),
 	ren(nullptr),
 	toolTip(""),
-	toolTipPresence(0),
 	isToolTipFadingIn(false)
 {
 	auto addPresetButton = [this](int index, Icon icon, ui::Point offset, String tooltip) {
@@ -213,24 +212,14 @@ void RenderView::OnDraw()
 	}
 }
 
-void RenderView::OnTick(float dt)
+void RenderView::OnTick()
 {
 	if (isToolTipFadingIn)
 	{
 		isToolTipFadingIn = false;
-		if(toolTipPresence < 120)
-		{
-			toolTipPresence += int(dt*2)>1?int(dt*2):2;
-			if(toolTipPresence > 120)
-				toolTipPresence = 120;
-		}
-	}
-	if(toolTipPresence>0)
-	{
-		toolTipPresence -= int(dt)>0?int(dt):1;
-		if(toolTipPresence<0)
-			toolTipPresence = 0;
+		toolTipPresence.MarkGoingUpwardThisTick();
 	}
+	toolTipPresence.Tick();
 }
 
 void RenderView::OnKeyPress(int key, int scan, bool repeat, bool shift, bool ctrl, bool alt)

src/gui/render/RenderView.h

@@ -1,5 +1,6 @@
 #pragma once
 #include "gui/interface/Window.h"
+#include "gui/interface/Fade.h"
 #include <cstdint>
 #include <vector>
 
@@ -19,7 +20,7 @@ class RenderView: public ui::Window {
 	std::vector<ModeCheckbox *> displayModes;
 	std::vector<ModeCheckbox *> colourModes;
 	String toolTip;
-	int toolTipPresence;
+	ui::Fade toolTipPresence{ 0, 0, 120, 120, 60, 1000 };
 	bool isToolTipFadingIn;
 	int line1, line2, line3, line4;
 	uint32_t CalculateRenderMode();
@@ -34,7 +35,7 @@ public:
 	void OnMouseDown(int x, int y, unsigned button) override;
 	void OnTryExit(ExitMethod method) override;
 	void OnDraw() override;
-	void OnTick(float dt) override;
+	void OnTick() override;
 	void OnKeyPress(int key, int scan, bool repeat, bool shift, bool ctrl, bool alt) override;
 	void ToolTip(ui::Point senderPosition, String toolTip) override;
 	virtual ~RenderView();

src/gui/save/LocalSaveActivity.cpp

@@ -61,7 +61,7 @@ LocalSaveActivity::LocalSaveActivity(std::unique_ptr<SaveFile> newSave, OnSaved
 	}
 }
 
-void LocalSaveActivity::OnTick(float dt)
+void LocalSaveActivity::OnTick()
 {
 	if (thumbnailRenderer)
 	{

src/gui/save/LocalSaveActivity.h

@@ -36,6 +36,6 @@ public:
 	void saveWrite(ByteString finalFilename);
 	void Save();
 	void OnDraw() override;
-	void OnTick(float dt) override;
+	void OnTick() override;
 	virtual ~LocalSaveActivity();
 };

src/gui/save/ServerSaveActivity.cpp

@@ -351,7 +351,7 @@ void ServerSaveActivity::CheckName(String newname)
 		titleLabel->SetText("Upload new simulation:");
 }
 
-void ServerSaveActivity::OnTick(float dt)
+void ServerSaveActivity::OnTick()
 {
 	if (thumbnailRenderer)
 	{

src/gui/save/ServerSaveActivity.h

@@ -45,7 +45,7 @@ public:
 	void ShowRules();
 	void CheckName(String newname);
 	virtual void OnDraw() override;
-	virtual void OnTick(float dt) override;
+	virtual void OnTick() override;
 	virtual ~ServerSaveActivity();
 protected:
 	void AddAuthorInfo();

src/gui/search/SearchView.cpp

@@ -672,7 +672,7 @@ void SearchView::NotifySelectedChanged(SearchModel * sender)
 	}
 }
 
-void SearchView::OnTick(float dt)
+void SearchView::OnTick()
 {
 	c->Update();
 	if (changed && lastChanged < GetTicks())

src/gui/search/SearchView.h

@@ -67,7 +67,7 @@ public:
 	virtual ~SearchView();
 	void AttachController(SearchController * _c) { c = _c; }
 	virtual void Search(String);
-	void OnTick(float dt) override;
+	void OnTick() override;
 	void OnMouseWheel(int x, int y, int d) override;
 	void OnKeyPress(int key, int scan, bool repeat, bool shift, bool ctrl, bool alt) override;
 	void OnKeyRelease(int key, int scan, bool repeat, bool shift, bool ctrl, bool alt) override;

src/gui/tags/TagsView.cpp

@@ -51,7 +51,7 @@ TagsView::TagsView():
 	AddComponent(title);
 }
 
-void TagsView::OnTick(float dt)
+void TagsView::OnTick()
 {
 	c->Tick();
 }

src/gui/tags/TagsView.h

@@ -22,7 +22,7 @@ class TagsView: public ui::Window {
 public:
 	TagsView();
 	void OnDraw() override;
-	void OnTick(float dt) override;
+	void OnTick() override;
 	void AttachController(TagsController * c_) { c = c_; }
 	void OnKeyPress(int key, int scan, bool repeat, bool shift, bool ctrl, bool alt) override;
 	void NotifyTagsChanged(TagsModel * sender);

src/lua/LuaWindow.cpp

@@ -69,7 +69,7 @@ LuaWindow::LuaWindow(lua_State *L)
 		}
 		void OnInitialized() override { luaWindow->triggerOnInitialized(); }
 		void OnExit() override { luaWindow->triggerOnExit(); }
-		void OnTick(float dt) override { luaWindow->triggerOnTick( dt); }
+		void OnTick() override { luaWindow->triggerOnTick(); }
 		void OnFocus() override { luaWindow->triggerOnFocus(); }
 		void OnBlur() override { luaWindow->triggerOnBlur(); }
 		void OnTryExit(ExitMethod) override { luaWindow->triggerOnTryExit(); }
@@ -226,12 +226,12 @@ void LuaWindow::triggerOnExit()
 	}
 }
 
-void LuaWindow::triggerOnTick(float dt)
+void LuaWindow::triggerOnTick()
 {
 	if(onTickFunction)
 	{
 		lua_rawgeti(L, LUA_REGISTRYINDEX, onTickFunction);
-		lua_pushnumber(L, dt);
+		lua_pushnumber(L, 1); // this used to be dt, which was measured in 60ths of a second; this hardcodes 60fps
 		if(tpt_lua_pcall(L, 1, 0, 0, eventTraitNone))
 		{
 			ci->Log(CommandInterface::LogError, tpt_lua_toString(L, -1));

src/lua/LuaWindow.h

@@ -54,7 +54,7 @@ class LuaWindow
 
 	void triggerOnInitialized();
 	void triggerOnExit();
-	void triggerOnTick(float deltaTime);
+	void triggerOnTick();
 	void triggerOnDraw();
 	void triggerOnFocus();
 	void triggerOnBlur();

src/tasks/TaskWindow.cpp

@@ -77,11 +77,9 @@ void TaskWindow::NotifyProgress(Task * task)
 	progressBar->SetStatus(progressStatus);
 }
 
-void TaskWindow::OnTick(float dt)
+void TaskWindow::OnTick()
 {
-	intermediatePos += 1.0f*dt;
-	if(intermediatePos>100.0f)
-		intermediatePos = 0.0f;
+	intermediatePos = std::fmod(ui::Engine::Ref().LastTick() / 600.f, 100.f);
 	task->Poll();
 	if (done)
 		Exit();

src/tasks/TaskWindow.h

@@ -26,7 +26,7 @@ public:
 	void NotifyDone(Task * task) override;
 	void NotifyProgress(Task * task) override;
 	void NotifyError(Task * task) override;
-	void OnTick(float dt) override;
+	void OnTick() override;
 	void OnDraw() override;
 	void Exit();
 };