Merge 185ca3a7f5 into 03f5f7145f

Truncation ellipsis is now a layouted line, so we can no longer rely on implicitly using the last set colour.

bin/ai/compat_14.nut

@@ -7,6 +7,19 @@
 
 /* This file contains code to downgrade the API from 15 to 14. */
 
+AIDate <- AIEconomyDate;
+AIDate.IsValidDate <- function(date) { return AIDate(date).IsValid(); }
+AIDate.GetCurrentDateCompat14 <- AIDate.GetCurrentDate;
+AIDate.GetCurrentDate <- function() { return AIDate.GetCurrentDateCompat14().date(); }
+AIDate.GetYearCompat14 <- AIDate.GetYear;
+AIDate.GetYear <- function(date) { return AIDate(date).GetYearCompat14(); }
+AIDate.GetMonthCompat14 <- AIDate.GetMonth;
+AIDate.GetMonth <- function(date) { return AIDate(date).GetMonthCompat14(); }
+AIDate.GetDayOfMonthCompat14 <- AIDate.GetDayOfMonth;
+AIDate.GetDayOfMonth <- function(date) { return AIDate(date).GetDayOfMonthCompat14(); }
+AIDate.GetDateCompat14 <- AIDate.GetDate;
+AIDate.GetDate <- function(year, month, day) { return AIDate.GetDateCompat14(year, month, day).date(); }
+
 AIBridge.GetBridgeID <- AIBridge.GetBridgeType;
 
 class AICompat14 {
@@ -17,6 +30,8 @@ class AICompat14 {
 	}
 }
 
+AIBaseStation.GetConstructionDateCompat14 <- AIBaseStation.GetConstructionDate;
+AIBaseStation.GetConstructionDate <- function(station_id) { return AIBaseStation.GetConstructionDateCompat14(station_id).date(); }
 AIBaseStation.SetNameCompat14 <- AIBaseStation.SetName;
 AIBaseStation.SetName <- function(id, name) { return AIBaseStation.SetNameCompat14(id, AICompat14.Text(name)); }
 
@@ -25,12 +40,18 @@ AICompany.SetName <- function(name) { return AICompany.SetNameCompat14(AICompat1
 AICompany.SetPresidentNameCompat14 <- AICompany.SetPresidentName;
 AICompany.SetPresidentName <- function(name) { return AICompany.SetPresidentNameCompat14(AICompat14.Text(name)); }
 
+AIEngine.GetDesignDateCompat14 <- AIEngine.GetDesignDate;
+AIEngine.GetDesignDate <- function(engine_id) { return AIEngine.GetDesignDateCompat14(engine_id).date(); }
+
 AIGroup.SetNameCompat14 <- AIGroup.SetName;
 AIGroup.SetName <- function(id, name) { return AIGroup.SetNameCompat14(id, AICompat14.Text(name)); }
 
 AISign.BuildSignCompat14 <- AISign.BuildSign;
 AISign.BuildSign <- function(id, name) { return AISign.BuildSignCompat14(id, AICompat14.Text(name)); }
 
+AISubsidy.GetExpireDateCompat14 <- AISubsidy.GetExpireDate;
+AISubsidy.GetExpireDate <- function(subsidy_id) { return AISubsidy.GetExpireDateCompat14(subsidy_id).date(); }
+
 AITown.FoundTownCompat14 <- AITown.FoundTown;
 AITown.FoundTown <- function(tile, size, city, layout, name) { return AITown.FoundTownCompat14(tile, size, city, layout, AICompat14.Text(name)); }
 

bin/game/compat_14.nut

@@ -7,6 +7,19 @@
 
 /* This file contains code to downgrade the API from 15 to 14. */
 
+GSDate <- GSEconomyDate;
+GSDate.IsValidDate <- function(date) { return GSDate(date).IsValid(); }
+GSDate.GetCurrentDateCompat14 <- GSDate.GetCurrentDate;
+GSDate.GetCurrentDate <- function() { return GSDate.GetCurrentDateCompat14().date(); }
+GSDate.GetYearCompat14 <- GSDate.GetYear;
+GSDate.GetYear <- function(date) { return GSDate(date).GetYearCompat14(); }
+GSDate.GetMonthCompat14 <- GSDate.GetMonth;
+GSDate.GetMonth <- function(date) { return GSDate(date).GetMonthCompat14(); }
+GSDate.GetDayOfMonthCompat14 <- GSDate.GetDayOfMonth;
+GSDate.GetDayOfMonth <- function(date) { return GSDate(date).GetDayOfMonthCompat14(); }
+GSDate.GetDateCompat14 <- GSDate.GetDate;
+GSDate.GetDate <- function(year, month, day) { return GSDate.GetDateCompat14(year, month, day).date(); }
+
 GSBridge.GetBridgeID <- GSBridge.GetBridgeType;
 
 /* Emulate old GSText parameter padding behaviour */
@@ -21,6 +34,8 @@ class GSCompat14 {
 	}
 }
 
+GSBaseStation.GetConstructionDateCompat14 <- GSBaseStation.GetConstructionDate;
+GSBaseStation.GetConstructionDate <- function(station_id) { return GSBaseStation.GetConstructionDateCompat14(station_id).date(); }
 GSBaseStation.SetNameCompat14 <- GSBaseStation.SetName;
 GSBaseStation.SetName <- function(id, name) { return GSBaseStation.SetNameCompat14(id, GSCompat14.Text(name)); }
 
@@ -29,6 +44,9 @@ GSCompany.SetName <- function(name) { return GSCompany.SetNameCompat14(GSCompat1
 GSCompany.SetPresidentNameCompat14 <- GSCompany.SetPresidentName;
 GSCompany.SetPresidentName <- function(name) { return GSCompany.SetPresidentNameCompat14(GSCompat14.Text(name)); }
 
+GSEngine.GetDesignDateCompat14 <- GSEngine.GetDesignDate;
+GSEngine.GetDesignDate <- function(engine_id) { return GSEngine.GetDesignDateCompat14(engine_id).date(); }
+
 GSGoal.NewCompat14 <- GSGoal.New;
 GSGoal.New <- function(company, goal, type, dest) { return GSGoal.NewCompat14(company, GSCompat14.Text(goal), type, dest); }
 GSGoal.SetTextCompat14 <- GSGoal.SetText;
@@ -43,6 +61,10 @@ GSGoal.QuestionClient <- function(id, target, is_client, question, type, buttons
 GSGroup.SetNameCompat14 <- GSGroup.SetName;
 GSGroup.SetName <- function(id, name) { return GSGroup.SetNameCompat14(id, GSCompat14.Text(name)); }
 
+GSIndustry.GetConstructionDateCompat14 <- GSIndustry.GetConstructionDate;
+GSIndustry.GetConstructionDate <- function(industry_id) { return GSIndustry.GetConstructionDateCompat14(industry_id).date(); }
+GSIndustry.GetCargoLastAcceptedDateCompat14 <- GSIndustry.GetCargoLastAcceptedDate;
+GSIndustry.GetCargoLastAcceptedDate <- function(industry_id, cargo_type) { return GSIndustry.GetCargoLastAcceptedDateCompat14(industry_id, cargo_type).date(); }
 GSIndustry.SetTextCompat14 <- GSIndustry.SetText;
 GSIndustry.SetText <- function(id, text) { return GSIndustry.SetTextCompat14(id, GSCompat14.Text(text)); }
 GSIndustry.SetProductionLevelCompat14 <- GSIndustry.SetProductionLevel;
@@ -63,15 +85,22 @@ GSNews.Create <- function(type, text, company, ref_type, ref) { return GSNews.Cr
 GSSign.BuildSignCompat14 <- GSSign.BuildSign;
 GSSign.BuildSign <- function(id, name) { return GSSign.BuildSignCompat14(id, GSCompat14.Text(name)); }
 
+GSStoryPage.GetDateCompat14 <- GSStoryPage.GetDate;
+GSStoryPage.GetDate <- function(story_page_id) { return GSStoryPage.GetDateCompat14(story_page_id).date(); }
 GSStoryPage.NewCompat14 <- GSStoryPage.New;
 GSStoryPage.New <- function(company, title) { return GSStoryPage.NewCompat14(company, GSCompat14.Text(title)); }
 GSStoryPage.NewElementCompat14 <- GSStoryPage.NewElement;
 GSStoryPage.NewElement <- function(page, type, ref, text) { return GSStoryPage.NewElementCompat14(page, type, ref, GSCompat14.Text(text)); }
 GSStoryPage.UpdateElementCompat14 <- GSStoryPage.UpdateElement;
 GSStoryPage.UpdateElement <- function(id, ref, text) { return GSStoryPage.UpdateElementCompat14(id, ref, GSCompat14.Text(text)); }
+GSStoryPage.SetDateCompat14 <- GSStoryPage.SetDate;
+GSStoryPage.SetDate <- function(story_page_id, date) { return GSStoryPage.SetDateCompat14(story_page_id, GSCalendarDate(date)); }
 GSStoryPage.SetTitleCompat14 <- GSStoryPage.SetTitle;
 GSStoryPage.SetTitle <- function(page, tile) { return GSStoryPage.SetTitleCompat14(page, GSCompat14.Text(title)); }
 
+GSSubsidy.GetExpireDateCompat14 <- GSSubsidy.GetExpireDate;
+GSSubsidy.GetExpireDate <- function(subsidy_id) { return GSSubsidy.GetExpireDateCompat14(subsidy_id).date(); }
+
 GSTown.SetNameCompat14 <- GSTown.SetName;
 GSTown.SetName <- function(id, name) { return GSTown.SetNameCompat14(id, GSCompat14.Text(name)); }
 GSTown.SetTextCompat14 <- GSTown.SetText;

src/console_cmds.cpp

@@ -2369,7 +2369,7 @@ static bool ConFont(std::span<std::string_view> argv)
 		FontCacheSubSetting *setting = GetFontCacheSubSetting(fs);
 		/* Make sure all non sprite fonts are loaded. */
 		if (!setting->font.empty() && !fc->HasParent()) {
-			InitFontCache(fs == FS_MONO);
+			InitFontCache(fs);
 			fc = FontCache::Get(fs);
 		}
 		IConsolePrint(CC_DEFAULT, "{} font:", FontSizeToName(fs));

src/fontcache.cpp

@@ -126,10 +126,10 @@ void SetFont(FontSize fontsize, const std::string &font, uint size)
 		CheckForMissingGlyphs();
 		_fcsettings = std::move(backup);
 	} else {
-		InitFontCache(true);
+		InitFontCache(fontsize);
 	}
 
-	LoadStringWidthTable(fontsize == FS_MONO);
+	LoadStringWidthTable(fontsize);
 	UpdateAllVirtCoords();
 	ReInitAllWindows(true);
 
@@ -213,15 +213,13 @@ std::string GetFontCacheFontName(FontSize fs)
 
 /**
  * (Re)initialize the font cache related things, i.e. load the non-sprite fonts.
- * @param monospace Whether to initialise the monospace or regular fonts.
+ * @param fontsizes Font sizes to be initialised.
  */
-void InitFontCache(bool monospace)
+void InitFontCache(FontSizes fontsizes)
 {
 	FontCache::InitializeFontCaches();
 
-	for (FontSize fs = FS_BEGIN; fs < FS_END; fs++) {
+	for (FontSize fs : fontsizes) {
-		if (monospace != (fs == FS_MONO)) continue;
-
 		FontCache *fc = FontCache::Get(fs);
 		if (fc->HasParent()) delete fc;
 

src/fontcache.h

@@ -167,9 +167,9 @@ inline void InitializeUnicodeGlyphMap()
 	}
 }
 
-inline void ClearFontCache()
+inline void ClearFontCache(FontSizes fontsizes)
 {
-	for (FontSize fs = FS_BEGIN; fs < FS_END; fs++) {
+	for (FontSize fs : fontsizes) {
 		FontCache::Get(fs)->ClearFontCache();
 	}
 }
@@ -231,7 +231,7 @@ inline FontCacheSubSetting *GetFontCacheSubSetting(FontSize fs)
 
 uint GetFontCacheFontSize(FontSize fs);
 std::string GetFontCacheFontName(FontSize fs);
-void InitFontCache(bool monospace);
+void InitFontCache(FontSizes fontsizes);
 void UninitFontCache();
 
 bool GetFontAAState();

src/gfx.cpp

@@ -8,6 +8,7 @@
 /** @file gfx.cpp Handling of drawing text and other gfx related stuff. */
 
 #include "stdafx.h"
+#include "gfx_func.h"
 #include "gfx_layout.h"
 #include "progress.h"
 #include "zoom_func.h"
@@ -579,7 +580,7 @@ static int DrawLayoutLine(const ParagraphLayouter::Line &line, int y, int left,
 
 	const uint shadow_offset = ScaleGUITrad(1);
 
-	auto draw_line = [&](const ParagraphLayouter::Line &line, bool do_shadow, int left, int min_x, int max_x, bool truncation) {
+	auto draw_line = [&](const ParagraphLayouter::Line &line, bool do_shadow, int left, int min_x, int max_x, bool truncation, TextColour &last_colour) {
 		const DrawPixelInfo *dpi = _cur_dpi;
 		int dpi_left = dpi->left;
 		int dpi_right = dpi->left + dpi->width - 1;
@@ -592,10 +593,15 @@ static int DrawLayoutLine(const ParagraphLayouter::Line &line, int y, int left,
 
 			FontCache *fc = f->fc;
 			TextColour colour = f->colour;
-			if (colour == TC_INVALID || HasFlag(default_colour, TC_FORCED)) colour = default_colour;
+			if (colour == TC_INVALID || HasFlag(last_colour, TC_FORCED)) {
+				colour = last_colour;
+			} else {
+				/* Update the last colour for the truncation ellipsis. */
+				last_colour = colour;
+			}
 			bool colour_has_shadow = (colour & TC_NO_SHADE) == 0 && colour != TC_BLACK;
-			SetColourRemap(do_shadow ? TC_BLACK : colour); // the last run also sets the colour for the truncation dots
 			if (do_shadow && (!fc->GetDrawGlyphShadow() || !colour_has_shadow)) continue;
+			SetColourRemap(do_shadow ? TC_BLACK : colour);
 
 			for (int i = 0; i < run.GetGlyphCount(); i++) {
 				GlyphID glyph = glyphs[i];
@@ -623,11 +629,12 @@ static int DrawLayoutLine(const ParagraphLayouter::Line &line, int y, int left,
 
 	/* Draw shadow, then foreground */
 	for (bool do_shadow : {true, false}) {
-		draw_line(line, do_shadow, left - offset_x, min_x, max_x, truncation);
+		TextColour last_colour = default_colour;
+		draw_line(line, do_shadow, left - offset_x, min_x, max_x, truncation, last_colour);
 
 		if (truncation) {
 			int x = (_current_text_dir == TD_RTL) ? left : (right - truncation_width);
-			draw_line(*truncation_layout->front(), do_shadow, x, INT32_MIN, INT32_MAX, false);
+			draw_line(*truncation_layout->front(), do_shadow, x, INT32_MIN, INT32_MAX, false, last_colour);
 		}
 	}
 
@@ -1240,14 +1247,14 @@ static void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMode mode,
 }
 
 /**
- * Initialize _stringwidth_table cache
+ * Initialize _stringwidth_table cache for the specified font sizes.
- * @param monospace Whether to load the monospace cache or the normal fonts.
+ * @param fontsizes Font sizes to initialise.
  */
-void LoadStringWidthTable(bool monospace)
+void LoadStringWidthTable(FontSizes fontsizes)
 {
-	ClearFontCache();
+	ClearFontCache(fontsizes);
 
-	for (FontSize fs = monospace ? FS_MONO : FS_BEGIN; fs < (monospace ? FS_END : FS_MONO); fs++) {
+	for (FontSize fs : fontsizes) {
 		for (uint i = 0; i != 224; i++) {
 			_stringwidth_table[fs][i] = GetGlyphWidth(fs, i + 32);
 		}
@@ -1812,7 +1819,7 @@ bool AdjustGUIZoom(bool automatic)
 	if (old_font_zoom != _font_zoom) {
 		GfxClearFontSpriteCache();
 	}
-	ClearFontCache();
+	ClearFontCache(FONTSIZES_ALL);
 	LoadStringWidthTable();
 
 	SetupWidgetDimensions();

src/gfx_func.h

@@ -149,7 +149,7 @@ int GetStringHeight(StringID str, int maxw);
 int GetStringLineCount(std::string_view str, int maxw);
 Dimension GetStringMultiLineBoundingBox(StringID str, const Dimension &suggestion);
 Dimension GetStringMultiLineBoundingBox(std::string_view str, const Dimension &suggestion, FontSize fontsize = FS_NORMAL);
-void LoadStringWidthTable(bool monospace = false);
+void LoadStringWidthTable(FontSizes fontsizes = FONTSIZES_REQUIRED);
 
 void DrawDirtyBlocks();
 void AddDirtyBlock(int left, int top, int right, int bottom);

src/gfx_type.h

@@ -258,6 +258,13 @@ enum FontSize : uint8_t {
 };
 DECLARE_INCREMENT_DECREMENT_OPERATORS(FontSize)
 
+using FontSizes = EnumBitSet<FontSize, uint8_t>;
+
+/** Mask of all possible font sizes. */
+constexpr FontSizes FONTSIZES_ALL{FS_NORMAL, FS_SMALL, FS_LARGE, FS_MONO};
+/** Mask of font sizes required to be present. */
+constexpr FontSizes FONTSIZES_REQUIRED{FS_NORMAL, FS_SMALL, FS_LARGE};
+
 inline std::string_view FontSizeToName(FontSize fs)
 {
 	static const std::string_view SIZE_TO_NAME[] = { "medium", "small", "large", "mono" };

src/gfxinit.cpp

@@ -245,7 +245,7 @@ static void RealChangeBlitter(std::string_view repl_blitter)
 
 	/* Clear caches that might have sprites for another blitter. */
 	VideoDriver::GetInstance()->ClearSystemSprites();
-	ClearFontCache();
+	ClearFontCache(FONTSIZES_ALL);
 	GfxClearSpriteCache();
 	ReInitAllWindows(false);
 }
@@ -326,7 +326,7 @@ void CheckBlitter()
 {
 	if (!SwitchNewGRFBlitter()) return;
 
-	ClearFontCache();
+	ClearFontCache(FONTSIZES_ALL);
 	GfxClearSpriteCache();
 	ReInitAllWindows(false);
 }
@@ -338,7 +338,7 @@ void GfxLoadSprites()
 
 	SwitchNewGRFBlitter();
 	VideoDriver::GetInstance()->ClearSystemSprites();
-	ClearFontCache();
+	ClearFontCache(FONTSIZES_ALL);
 	GfxInitSpriteMem();
 	LoadSpriteTables();
 	GfxInitPalettes();

src/openttd.cpp

@@ -700,7 +700,7 @@ int openttd_main(std::span<std::string_view> arguments)
 	InitializeLanguagePacks();
 
 	/* Initialize the font cache */
-	InitFontCache(false);
+	InitFontCache(FONTSIZES_REQUIRED);
 
 	/* This must be done early, since functions use the SetWindowDirty* calls */
 	InitWindowSystem();

src/os/unix/font_unix.cpp

@@ -182,6 +182,6 @@ bool SetFallbackFont(FontCacheSettings *settings, const std::string &language_is
 	if (best_font == nullptr) return false;
 
 	callback->SetFontNames(settings, best_font, &best_index);
-	InitFontCache(callback->Monospace());
+	InitFontCache(callback->Monospace() ? FontSizes{FS_MONO} : FONTSIZES_REQUIRED);
 	return true;
 }

src/script/api/CMakeLists.txt

@@ -40,13 +40,15 @@ foreach(API "ai;AI" "game;GS" "template;Template")
     list(GET API 1 APIUC)
 
     foreach(SCRIPT_API_FILE IN LISTS SCRIPT_API_FILES)
-        if("${SCRIPT_API_FILE}" MATCHES ".*script_controller.*")
-            continue()
-        endif()
         get_filename_component(SCRIPT_API_FILE_NAME "${SCRIPT_API_FILE}" NAME_WE)
         string(REPLACE "script_" "${APILC}_" SCRIPT_API_FILE_NAME "${SCRIPT_API_FILE_NAME}")
         set(SCRIPT_API_BINARY_FILE "${CMAKE_BINARY_DIR}/generated/script/api/${APILC}/${SCRIPT_API_FILE_NAME}.sq.hpp")
 
+        if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${APILC}/${SCRIPT_API_FILE_NAME}.sq.hpp")
+            file(REMOVE "${SCRIPT_API_BINARY_FILE}")
+            continue()
+        endif()
+
         add_custom_command_timestamp(OUTPUT ${SCRIPT_API_BINARY_FILE}
                 COMMAND ${CMAKE_COMMAND}
                         -DSCRIPT_API_SOURCE_FILE=${CMAKE_CURRENT_SOURCE_DIR}/squirrel_export.sq.hpp.in
@@ -74,6 +76,7 @@ foreach(API "ai;AI" "game;GS" "template;Template")
 
     if(NOT "${APILC}" STREQUAL "template")
         list(APPEND SCRIPT_${APIUC}_BINARY_FILES "${CMAKE_CURRENT_SOURCE_DIR}/${APILC}/${APILC}_controller.sq.hpp")
+        list(APPEND SCRIPT_${APIUC}_BINARY_FILES "${CMAKE_CURRENT_SOURCE_DIR}/${APILC}/${APILC}_date.sq.hpp")
         set(INCLUDES_BINARY_FILE "${CMAKE_BINARY_DIR}/generated/script/api/${APILC}/${APILC}_includes.hpp")
         set(API_FILES "${CMAKE_CURRENT_BINARY_DIR}/${APILC}.files")
         file(GENERATE OUTPUT ${API_FILES} CONTENT "${SCRIPT_${APIUC}_BINARY_FILES}")
@@ -120,6 +123,7 @@ foreach(API "ai;AI" "game;GS" "template;Template")
             )
         endif()
     else()
+        list(APPEND SCRIPT_Template_BINARY_FILES "${CMAKE_CURRENT_SOURCE_DIR}/template/template_date.sq.hpp")
         add_dependencies(script_api
                 script_${APILC}
         )
@@ -233,7 +237,6 @@ add_files(
     script_company.cpp
     script_companymode.cpp
     script_controller.cpp
-    script_date.cpp
     script_depotlist.cpp
     script_engine.cpp
     script_enginelist.cpp

src/script/api/ai/ai_date.sq.hpp

@@ -0,0 +1,62 @@
+/*
+ * This file is part of OpenTTD.
+ * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
+ * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "../script_date.hpp"
+#include "../template/template_date.sq.hpp"
+
+
+template <> SQInteger PushClassName<ScriptEconomyDate, ScriptType::AI>(HSQUIRRELVM vm) { sq_pushstring(vm, "AIEconomyDate"); return 1; }
+template <> SQInteger PushClassName<ScriptCalendarDate, ScriptType::AI>(HSQUIRRELVM vm) { sq_pushstring(vm, "AICalendarDate"); return 1; }
+
+void SQAIDate_Register(Squirrel &engine)
+{
+	DefSQClass<ScriptEconomyDate, ScriptType::AI> SQAIEconomyDate("AIEconomyDate");
+	SQAIEconomyDate.PreRegister(engine, "AIObject");
+	SQAIEconomyDate.AddSQAdvancedConstructor(engine);
+
+	SQAIEconomyDate.DefSQConst(engine, ScriptEconomyDate::DATE_INVALID, "DATE_INVALID");
+
+	SQAIEconomyDate.DefSQStaticMethod(engine, &ScriptEconomyDate::GetCurrentDate, "GetCurrentDate", ".");
+	SQAIEconomyDate.DefSQStaticMethod(engine, &ScriptEconomyDate::GetDate,        "GetDate",        ".iii");
+
+	SQAIEconomyDate.DefSQMethod(engine, &ScriptEconomyDate::IsValid,        "IsValid",       ".");
+	SQAIEconomyDate.DefSQMethod(engine, &ScriptEconomyDate::GetYear,        "GetYear",       ".");
+	SQAIEconomyDate.DefSQMethod(engine, &ScriptEconomyDate::GetMonth,       "GetMonth",      ".");
+	SQAIEconomyDate.DefSQMethod(engine, &ScriptEconomyDate::GetDayOfMonth,  "GetDayOfMonth", ".");
+	SQAIEconomyDate.DefSQMethod(engine, &ScriptEconomyDate::date,           "date",          ".");
+
+	SQAIEconomyDate.DefSQAdvancedMethod(engine, &ScriptEconomyDate::_tostring, "_tostring");
+	SQAIEconomyDate.DefSQAdvancedMethod(engine, &ScriptEconomyDate::_add,      "_add");
+	SQAIEconomyDate.DefSQAdvancedMethod(engine, &ScriptEconomyDate::_sub,      "_sub");
+	SQAIEconomyDate.DefSQAdvancedMethod(engine, &ScriptEconomyDate::_cmp,      "_cmp");
+
+	SQAIEconomyDate.PostRegister(engine);
+
+
+	DefSQClass<ScriptCalendarDate, ScriptType::AI> SQAICalendarDate("AICalendarDate");
+	SQAICalendarDate.PreRegister(engine, "AIObject");
+	SQAICalendarDate.AddSQAdvancedConstructor(engine);
+
+	SQAICalendarDate.DefSQConst(engine, ScriptCalendarDate::DATE_INVALID, "DATE_INVALID");
+
+	SQAICalendarDate.DefSQStaticMethod(engine, &ScriptCalendarDate::GetCurrentDate, "GetCurrentDate", ".");
+	SQAICalendarDate.DefSQStaticMethod(engine, &ScriptCalendarDate::GetDate,        "GetDate",        ".iii");
+
+	SQAICalendarDate.DefSQMethod(engine, &ScriptCalendarDate::IsValid,        "IsValid",       ".");
+	SQAICalendarDate.DefSQMethod(engine, &ScriptCalendarDate::GetYear,        "GetYear",       ".");
+	SQAICalendarDate.DefSQMethod(engine, &ScriptCalendarDate::GetMonth,       "GetMonth",      ".");
+	SQAICalendarDate.DefSQMethod(engine, &ScriptCalendarDate::GetDayOfMonth,  "GetDayOfMonth", ".");
+	SQAICalendarDate.DefSQMethod(engine, &ScriptCalendarDate::date,           "date",          ".");
+
+	SQAICalendarDate.DefSQAdvancedMethod(engine, &ScriptCalendarDate::_tostring, "_tostring");
+	SQAICalendarDate.DefSQAdvancedMethod(engine, &ScriptCalendarDate::_add,      "_add");
+	SQAICalendarDate.DefSQAdvancedMethod(engine, &ScriptCalendarDate::_sub,      "_sub");
+	SQAICalendarDate.DefSQAdvancedMethod(engine, &ScriptCalendarDate::_cmp,      "_cmp");
+
+	SQAICalendarDate.PostRegister(engine);
+
+}

src/script/api/ai_changelog.hpp

@@ -28,6 +28,11 @@
  * \li AICargo::CC_POTABLE
  * \li AICargo::CC_NON_POTABLE
  * \li AIVehicleList_Waypoint
+ * \li AIEconomyDate
+ * \li AICalendarDate
+ *
+ * API removals:
+ * \li AIDate
  *
  * Other changes:
  * \li AIBridge::GetBridgeID renamed to AIBridge::GetBridgeType

src/script/api/game/game_date.sq.hpp

@@ -0,0 +1,62 @@
+/*
+ * This file is part of OpenTTD.
+ * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
+ * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "../script_date.hpp"
+#include "../template/template_date.sq.hpp"
+
+template <> SQInteger PushClassName<ScriptEconomyDate, ScriptType::GS>(HSQUIRRELVM vm) { sq_pushstring(vm, "GSEconomyDate"); return 1; }
+template <> SQInteger PushClassName<ScriptCalendarDate, ScriptType::GS>(HSQUIRRELVM vm) { sq_pushstring(vm, "GSCalendarDate"); return 1; }
+
+void SQGSDate_Register(Squirrel &engine)
+{
+	DefSQClass<ScriptEconomyDate, ScriptType::GS> SQGSEconomyDate("GSEconomyDate");
+	SQGSEconomyDate.PreRegister(engine, "GSObject");
+	SQGSEconomyDate.AddSQAdvancedConstructor(engine);
+
+	SQGSEconomyDate.DefSQConst(engine, ScriptEconomyDate::DATE_INVALID, "DATE_INVALID");
+
+	SQGSEconomyDate.DefSQStaticMethod(engine, &ScriptEconomyDate::GetCurrentDate, "GetCurrentDate", ".");
+	SQGSEconomyDate.DefSQStaticMethod(engine, &ScriptEconomyDate::GetDate,        "GetDate",        ".iii");
+	SQGSEconomyDate.DefSQStaticMethod(engine, &ScriptEconomyDate::GetSystemTime,  "GetSystemTime",  ".");
+
+	SQGSEconomyDate.DefSQMethod(engine, &ScriptEconomyDate::IsValid,        "IsValid",       ".");
+	SQGSEconomyDate.DefSQMethod(engine, &ScriptEconomyDate::GetYear,        "GetYear",       ".");
+	SQGSEconomyDate.DefSQMethod(engine, &ScriptEconomyDate::GetMonth,       "GetMonth",      ".");
+	SQGSEconomyDate.DefSQMethod(engine, &ScriptEconomyDate::GetDayOfMonth,  "GetDayOfMonth", ".");
+	SQGSEconomyDate.DefSQMethod(engine, &ScriptEconomyDate::date,           "date",          ".");
+
+	SQGSEconomyDate.DefSQAdvancedMethod(engine, &ScriptEconomyDate::_tostring, "_tostring");
+	SQGSEconomyDate.DefSQAdvancedMethod(engine, &ScriptEconomyDate::_add,      "_add");
+	SQGSEconomyDate.DefSQAdvancedMethod(engine, &ScriptEconomyDate::_sub,      "_sub");
+	SQGSEconomyDate.DefSQAdvancedMethod(engine, &ScriptEconomyDate::_cmp,      "_cmp");
+
+	SQGSEconomyDate.PostRegister(engine);
+
+
+	DefSQClass<ScriptCalendarDate, ScriptType::GS> SQGSCalendarDate("GSCalendarDate");
+	SQGSCalendarDate.PreRegister(engine, "GSObject");
+	SQGSCalendarDate.AddSQAdvancedConstructor(engine);
+
+	SQGSCalendarDate.DefSQConst(engine, ScriptCalendarDate::DATE_INVALID, "DATE_INVALID");
+
+	SQGSCalendarDate.DefSQStaticMethod(engine, &ScriptCalendarDate::GetCurrentDate, "GetCurrentDate", ".");
+	SQGSCalendarDate.DefSQStaticMethod(engine, &ScriptCalendarDate::GetDate,        "GetDate",        ".iii");
+	SQGSCalendarDate.DefSQStaticMethod(engine, &ScriptCalendarDate::GetSystemTime,  "GetSystemTime",  ".");
+
+	SQGSCalendarDate.DefSQMethod(engine, &ScriptCalendarDate::IsValid,        "IsValid",       ".");
+	SQGSCalendarDate.DefSQMethod(engine, &ScriptCalendarDate::GetYear,        "GetYear",       ".");
+	SQGSCalendarDate.DefSQMethod(engine, &ScriptCalendarDate::GetMonth,       "GetMonth",      ".");
+	SQGSCalendarDate.DefSQMethod(engine, &ScriptCalendarDate::GetDayOfMonth,  "GetDayOfMonth", ".");
+	SQGSCalendarDate.DefSQMethod(engine, &ScriptCalendarDate::date,           "date",          ".");
+
+	SQGSCalendarDate.DefSQAdvancedMethod(engine, &ScriptCalendarDate::_tostring, "_tostring");
+	SQGSCalendarDate.DefSQAdvancedMethod(engine, &ScriptCalendarDate::_add,      "_add");
+	SQGSCalendarDate.DefSQAdvancedMethod(engine, &ScriptCalendarDate::_sub,      "_sub");
+	SQGSCalendarDate.DefSQAdvancedMethod(engine, &ScriptCalendarDate::_cmp,      "_cmp");
+
+	SQGSCalendarDate.PostRegister(engine);
+}

src/script/api/game_changelog.hpp

@@ -29,6 +29,11 @@
  * \li GSCargo::CC_NON_POTABLE
  * \li GSVehicleList_Waypoint
  * \li GSBaseStation::GetOwner
+ * \li GSEconomyDate
+ * \li GSCalendarDate
+ *
+ * API removals:
+ * \li GSDate
  *
  * Other changes:
  * \li GSBridge::GetBridgeID renamed to GSBridge::GetBridgeType

src/script/api/script_basestation.cpp

@@ -66,9 +66,9 @@
 	return ::BaseStation::Get(station_id)->xy;
 }
 
-/* static */ ScriptDate::Date ScriptBaseStation::GetConstructionDate(StationID station_id)
+/* static */ ScriptCalendarDate *ScriptBaseStation::GetConstructionDate(StationID station_id)
 {
-	if (!IsValidBaseStation(station_id)) return ScriptDate::DATE_INVALID;
+	if (!IsValidBaseStation(station_id)) return new ScriptCalendarDate();
 
-	return (ScriptDate::Date)::BaseStation::Get(station_id)->build_date.base();
+	return new ScriptCalendarDate(static_cast<ScriptCalendarDate::Date>(::BaseStation::Get(station_id)->build_date.base()));
 }

src/script/api/script_basestation.hpp

@@ -78,7 +78,7 @@ public:
 	 * @return The last calendar-date some part of this station was build.
 	 * @see \ref ScriptCalendarTime
 	 */
-	static ScriptDate::Date GetConstructionDate(StationID station_id);
+	static ScriptCalendarDate *GetConstructionDate(StationID station_id);
 };
 
 #endif /* SCRIPT_BASESTATION_HPP */

src/script/api/script_client.cpp

@@ -46,9 +46,9 @@ static NetworkClientInfo *FindClientInfo(ScriptClient::ClientID client)
 	return ScriptCompany::ToScriptCompanyID(ci->client_playas);
 }
 
-/* static */ ScriptDate::Date ScriptClient::GetJoinDate(ScriptClient::ClientID client)
+/* static */ ScriptEconomyDate *ScriptClient::GetJoinDate(ScriptClient::ClientID client)
 {
 	NetworkClientInfo *ci = FindClientInfo(client);
-	if (ci == nullptr) return ScriptDate::DATE_INVALID;
+	if (ci == nullptr) return new ScriptEconomyDate();
-	return (ScriptDate::Date)ci->join_date.base();
+	return new ScriptEconomyDate(static_cast<ScriptEconomyDate::Date>(ci->join_date.base()));
 }

src/script/api/script_client.hpp

@@ -62,7 +62,7 @@ public:
 	 * @return The economy-date when client has joined.
 	 * @see \ref ScriptEconomyTime
 	 */
-	static ScriptDate::Date GetJoinDate(ClientID client);
+	static ScriptEconomyDate *GetJoinDate(ClientID client);
 };
 
 

src/script/api/script_date.cpp

@@ -1,68 +0,0 @@
-/*
- * This file is part of OpenTTD.
- * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
- * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/** @file script_date.cpp Implementation of ScriptDate. */
-
-#include "../../stdafx.h"
-#include "script_date.hpp"
-#include "../../timer/timer_game_economy.h"
-
-#include <time.h>
-
-#include "../../safeguards.h"
-
-/* static */ bool ScriptDate::IsValidDate(Date date)
-{
-	return date >= 0;
-}
-
-/* static */ ScriptDate::Date ScriptDate::GetCurrentDate()
-{
-	return (ScriptDate::Date)TimerGameEconomy::date.base();
-}
-
-/* static */ SQInteger ScriptDate::GetYear(ScriptDate::Date date)
-{
-	if (date < 0) return DATE_INVALID;
-
-	::TimerGameEconomy::YearMonthDay ymd = ::TimerGameEconomy::ConvertDateToYMD(::TimerGameEconomy::Date{date});
-	return ymd.year.base();
-}
-
-/* static */ SQInteger ScriptDate::GetMonth(ScriptDate::Date date)
-{
-	if (date < 0) return DATE_INVALID;
-
-	::TimerGameEconomy::YearMonthDay ymd = ::TimerGameEconomy::ConvertDateToYMD(::TimerGameEconomy::Date{date});
-	return ymd.month + 1;
-}
-
-/* static */ SQInteger ScriptDate::GetDayOfMonth(ScriptDate::Date date)
-{
-	if (date < 0) return DATE_INVALID;
-
-	::TimerGameEconomy::YearMonthDay ymd = ::TimerGameEconomy::ConvertDateToYMD(::TimerGameEconomy::Date{date});
-	return ymd.day;
-}
-
-/* static */ ScriptDate::Date ScriptDate::GetDate(SQInteger year, SQInteger month, SQInteger day_of_month)
-{
-	if (month < 1 || month > 12) return DATE_INVALID;
-	if (day_of_month < 1 || day_of_month > 31) return DATE_INVALID;
-
-	::TimerGameEconomy::Year timer_year{ClampTo<int32_t>(year)};
-	if (timer_year < EconomyTime::MIN_YEAR || timer_year > EconomyTime::MAX_YEAR) return DATE_INVALID;
-
-	return static_cast<ScriptDate::Date>(::TimerGameEconomy::ConvertYMDToDate(timer_year, month - 1, day_of_month).base());
-}
-
-/* static */ SQInteger ScriptDate::GetSystemTime()
-{
-	time_t t;
-	time(&t);
-	return t;
-}

src/script/api/script_date.hpp

@@ -12,7 +12,175 @@
 
 #include "script_object.hpp"
 #include "../../timer/timer_game_economy.h"
+#include "../squirrel_helper.hpp"
 
+#ifndef DOXYGEN_API
+template <size_t N>
+struct StringLiteral {
+	constexpr StringLiteral(const char (&str)[N])
+	{
+		std::copy_n(str, N, this->value);
+	}
+
+	char value[N];
+};
+
+template <class Timer, class Time, StringLiteral Tag>
+class ScriptDateBase : public ScriptObject {
+public:
+	using YearMonthDay = Timer::YearMonthDay;
+	using Year = Timer::Year;
+
+	enum Date {
+		DATE_INVALID = Time::INVALID_DATE.base(),
+	};
+
+	ScriptDateBase(Date date = DATE_INVALID) : _date(date) {}
+	ScriptDateBase(HSQUIRRELVM vm) : _date(DATE_INVALID)
+	{
+		int nparam = sq_gettop(vm) - 1;
+		if (nparam >= 1) {
+			SQInteger date;
+			if (SQ_FAILED(sq_getinteger(vm, 2, &date))) {
+				throw sq_throwerror(vm, "Argument must be an integer");
+			}
+			this->_date = static_cast<Date>(date);
+		}
+	}
+
+	bool IsValid()
+	{
+		return this->_date > 0;
+	}
+
+	static ScriptDateBase *GetCurrentDate()
+	{
+		return new ScriptDateBase(static_cast<Date>(Timer::date.base()));
+	}
+
+	SQInteger GetYear()
+	{
+		if (!this->IsValid()) return DATE_INVALID;
+
+		YearMonthDay ymd = Timer::ConvertDateToYMD(static_cast<Timer::Date>(this->_date));
+		return ymd.year.base();
+	}
+
+	SQInteger GetMonth()
+	{
+		if (!this->IsValid()) return DATE_INVALID;
+
+		YearMonthDay ymd = Timer::ConvertDateToYMD(static_cast<Timer::Date>(this->_date));
+		return ymd.month + 1;
+	}
+
+	SQInteger GetDayOfMonth()
+	{
+		if (!this->IsValid()) return DATE_INVALID;
+
+		YearMonthDay ymd = Timer::ConvertDateToYMD(static_cast<Timer::Date>(this->_date));
+		return ymd.day;
+	}
+
+	static ScriptDateBase *GetDate(SQInteger year, SQInteger month, SQInteger day_of_month)
+	{
+		if (month < 1 || month > 12) return new ScriptDateBase();
+		if (day_of_month < 1 || day_of_month > 31) return new ScriptDateBase();
+
+		Year timer_year{ClampTo<int32_t>(year)};
+		if (timer_year < Time::MIN_YEAR || timer_year > Time::MAX_YEAR) return new ScriptDateBase();
+
+		return new ScriptDateBase(static_cast<Date>(Timer::ConvertYMDToDate(timer_year, month - 1, day_of_month).base()));
+	}
+
+	static SQInteger GetSystemTime()
+	{
+		time_t t;
+		time(&t);
+		return t;
+	}
+
+	Date date() { return this->_date; }
+
+	SQInteger _tostring(HSQUIRRELVM vm)
+	{
+		sq_pushstring(vm, fmt::format("{}", this->_date));
+		return 1;
+	}
+
+	SQInteger _add(HSQUIRRELVM vm)
+	{
+		SQInteger days = 0;
+		switch (sq_gettype(vm, 2)) {
+			case OT_INTEGER:
+				sq_getinteger(vm, 2, &days);
+				break;
+			case OT_INSTANCE: {
+				ScriptDateBase *other = static_cast<ScriptDateBase *>(Squirrel::GetRealInstance(vm, 2, Tag.value));
+				if (other == nullptr) return SQ_ERROR;
+				days = other->_date;
+				break;
+			}
+			default: return SQ_ERROR;
+		}
+		ScriptDateBase *res = new ScriptDateBase(static_cast<Date>(this->_date + days));
+		res->AddRef();
+		Squirrel::CreateClassInstanceVM(vm, Tag.value, res, nullptr, SQConvert::DefSQDestructorCallback<ScriptDateBase>, true);
+		return 1;
+	}
+
+	SQInteger _sub(HSQUIRRELVM vm)
+	{
+		SQInteger days = 0;
+		switch (sq_gettype(vm, 2)) {
+			case OT_INTEGER:
+				sq_getinteger(vm, 2, &days);
+				break;
+			case OT_INSTANCE: {
+					ScriptDateBase *other = static_cast<ScriptDateBase *>(Squirrel::GetRealInstance(vm, 2, Tag.value));
+					if (other == nullptr) return SQ_ERROR;
+					days = other->_date;
+					break;
+			}
+			default: return SQ_ERROR;
+		}
+		ScriptDateBase *res = new ScriptDateBase(static_cast<Date>(this->_date - days));
+		res->AddRef();
+		Squirrel::CreateClassInstanceVM(vm, Tag.value, res, nullptr, SQConvert::DefSQDestructorCallback<ScriptDateBase>, true);
+		return 1;
+	}
+
+	SQInteger _cmp(HSQUIRRELVM vm)
+	{
+		ScriptDateBase *other = static_cast<ScriptDateBase *>(Squirrel::GetRealInstance(vm, 2, Tag.value));
+		if (other == nullptr) return SQ_ERROR;
+		sq_pushinteger(vm, this->_date - other->_date);
+		return 1;
+	}
+
+	bool SaveObject(HSQUIRRELVM vm) override
+	{
+		sq_pushstring(vm, Tag.value);
+		sq_pushinteger(vm, this->_date);
+		return true;
+	}
+
+	bool LoadObject(HSQUIRRELVM vm) override
+	{
+		if (sq_gettype(vm, -1) != OT_INTEGER) return false;
+		SQInteger val;
+		sq_getinteger(vm, -1, &val);
+		this->_date = static_cast<Date>(val);
+		return true;
+	}
+
+protected:
+	Date _date = DATE_INVALID;
+};
+
+using ScriptEconomyDate = ScriptDateBase<TimerGameEconomy, EconomyTime, "EconomyDate">;
+using ScriptCalendarDate = ScriptDateBase<TimerGameCalendar, CalendarTime, "CalendarDate">;
+#else
 /**
  * Class that handles all date related (calculation) functions.
  * @api ai game
@@ -48,22 +216,23 @@
  *     Economy-time will use a 360 day calendar (12 months with 30 days each), which runs at a constant speed of one economy-month per realtime-minute.
  *     Calendar-time will use a Gregorian calendar, which can be slowed to stopped via game settings.
  */
-class ScriptDate : public ScriptObject {
+class ScriptEconomyDate : public ScriptObject {
 public:
 	/**
-	 * Date data type is an integer value. Use ScriptDate::GetDate to
+	 * Date data type is an integer value. Use ScriptEconomyDate::GetDate to
 	 * compose valid date values for a known year, month and day.
 	 */
 	enum Date {
-		DATE_INVALID = ::EconomyTime::INVALID_DATE.base(), ///< A value representing an invalid date.
+		DATE_INVALID, ///< A value representing an invalid date.
 	};
 
+	ScriptEconomyDate(Date date = DATE_INVALID);
+
 	/**
 	 * Validates if a date value represent a valid date.
-	 * @param date The date to validate.
 	 * @return True if the date is valid, otherwise false
 	 */
-	static bool IsValidDate(Date date);
+	bool IsValid();
 
 	/**
 	 * Get the current date.
@@ -72,28 +241,25 @@ public:
 	 *  100 but not by 400.
 	 * @return The current date.
 	 */
-	static Date GetCurrentDate();
+	static ScriptEconomyDate GetCurrentDate();
 
 	/**
 	 * Get the year of the given date.
-	 * @param date The date to get the year of.
 	 * @return The year.
 	 */
-	static SQInteger GetYear(Date date);
+	SQInteger GetYear();
 
 	/**
 	 * Get the month of the given date.
-	 * @param date The date to get the month of.
 	 * @return The month.
 	 */
-	static SQInteger GetMonth(Date date);
+	SQInteger GetMonth();
 
 	/**
 	 * Get the day (of the month) of the given date.
-	 * @param date The date to get the day of.
 	 * @return The day.
 	 */
-	static SQInteger GetDayOfMonth(Date date);
+	SQInteger GetDayOfMonth();
 
 	/**
 	 * Get the date given a year, month and day of month.
@@ -102,7 +268,7 @@ public:
 	 * @param day_of_month The day of month of the to-be determined date.
 	 * @return The date.
 	 */
-	static Date GetDate(SQInteger year, SQInteger month, SQInteger day_of_month);
+	static ScriptEconomyDate GetDate(SQInteger year, SQInteger month, SQInteger day_of_month);
 
 	/**
 	 * Get the time of the host system.
@@ -111,6 +277,84 @@ public:
 	 * @note This uses the clock of the host system, which can skew or be set back. Use with caution.
 	 */
 	static SQInteger GetSystemTime();
+
+	/**
+	 * Get the date.
+	 * @return The date.
+	 */
+	Date date();
 };
 
+
+
+class ScriptCalendarDate : public ScriptObject {
+public:
+	/**
+	 * Date data type is an integer value. Use ScriptCalendarDate::GetDate to
+	 * compose valid date values for a known year, month and day.
+	 */
+	enum Date {
+		DATE_INVALID, ///< A value representing an invalid date.
+	};
+
+	ScriptCalendarDate(Date date = DATE_INVALID);
+
+	/**
+	 * Validates if a date value represent a valid date.
+	 * @return True if the date is valid, otherwise false
+	 */
+	bool IsValid();
+
+	/**
+	 * Get the current date.
+	 * This is the number of days since epoch under the assumption that
+	 *  there is a leap year every 4 years, except when dividable by
+	 *  100 but not by 400.
+	 * @return The current date.
+	 */
+	static ScriptCalendarDate GetCurrentDate();
+
+	/**
+	 * Get the year of the given date.
+	 * @return The year.
+	 */
+	SQInteger GetYear();
+
+	/**
+	 * Get the month of the given date.
+	 * @return The month.
+	 */
+	SQInteger GetMonth();
+
+	/**
+	 * Get the day (of the month) of the given date.
+	 * @return The day.
+	 */
+	SQInteger GetDayOfMonth();
+
+	/**
+	 * Get the date given a year, month and day of month.
+	 * @param year The year of the to-be determined date.
+	 * @param month The month of the to-be determined date.
+	 * @param day_of_month The day of month of the to-be determined date.
+	 * @return The date.
+	 */
+	static ScriptCalendarDate GetDate(SQInteger year, SQInteger month, SQInteger day_of_month);
+
+	/**
+	 * Get the time of the host system.
+	 * @return The amount of seconds passed since 1 Jan 1970.
+	 * @api -ai
+	 * @note This uses the clock of the host system, which can skew or be set back. Use with caution.
+	 */
+	static SQInteger GetSystemTime();
+
+	/**
+	 * Get the date.
+	 * @return The date.
+	 */
+	Date date();
+};
+#endif /* DOXYGEN_API */
+
 #endif /* SCRIPT_DATE_HPP */

src/script/api/script_engine.cpp

@@ -169,11 +169,11 @@
 	return ::Engine::Get(engine_id)->GetDisplayMaxTractiveEffort() / 1000;
 }
 
-/* static */ ScriptDate::Date ScriptEngine::GetDesignDate(EngineID engine_id)
+/* static */ ScriptCalendarDate *ScriptEngine::GetDesignDate(EngineID engine_id)
 {
-	if (!IsValidEngine(engine_id)) return ScriptDate::DATE_INVALID;
+	if (!IsValidEngine(engine_id)) return new ScriptCalendarDate();
 
-	return (ScriptDate::Date)::Engine::Get(engine_id)->intro_date.base();
+	return new ScriptCalendarDate(static_cast<ScriptCalendarDate::Date>(::Engine::Get(engine_id)->intro_date.base()));
 }
 
 /* static */ ScriptVehicle::VehicleType ScriptEngine::GetVehicleType(EngineID engine_id)

src/script/api/script_engine.hpp

@@ -173,7 +173,7 @@ public:
 	 * @return The calendar-date this engine was designed.
 	 * @see \ref ScriptCalendarTime
 	 */
-	static ScriptDate::Date GetDesignDate(EngineID engine_id);
+	static ScriptCalendarDate *GetDesignDate(EngineID engine_id);
 
 	/**
 	 * Get the type of an engine.

src/script/api/script_industry.cpp

@@ -49,11 +49,11 @@
 	return ::StrMakeValid(::GetString(STR_INDUSTRY_NAME, industry_id), {});
 }
 
-/* static */ ScriptDate::Date ScriptIndustry::GetConstructionDate(IndustryID industry_id)
+/* static */ ScriptCalendarDate *ScriptIndustry::GetConstructionDate(IndustryID industry_id)
 {
 	const Industry *i = Industry::GetIfValid(industry_id);
-	if (i == nullptr) return ScriptDate::DATE_INVALID;
+	if (i == nullptr) return new ScriptCalendarDate();
-	return (ScriptDate::Date)i->construction_date.base();
+	return new ScriptCalendarDate(static_cast<ScriptCalendarDate::Date>(i->construction_date.base()));
 }
 
 /* static */ bool ScriptIndustry::SetText(IndustryID industry_id, Text *text)
@@ -226,18 +226,18 @@
 	return i->last_prod_year.base();
 }
 
-/* static */ ScriptDate::Date ScriptIndustry::GetCargoLastAcceptedDate(IndustryID industry_id, CargoType cargo_type)
+/* static */ ScriptEconomyDate *ScriptIndustry::GetCargoLastAcceptedDate(IndustryID industry_id, CargoType cargo_type)
 {
 	const Industry *i = Industry::GetIfValid(industry_id);
-	if (i == nullptr) return ScriptDate::DATE_INVALID;
+	if (i == nullptr) return new ScriptEconomyDate();
 
 	if (!::IsValidCargoType(cargo_type)) {
 		auto it = std::max_element(std::begin(i->accepted), std::end(i->accepted), [](const auto &a, const auto &b) { return a.last_accepted < b.last_accepted; });
-		return (ScriptDate::Date)it->last_accepted.base();
+		return new ScriptEconomyDate(static_cast<ScriptEconomyDate::Date>(it->last_accepted.base()));
 	} else {
 		auto it = i->GetCargoAccepted(cargo_type);
-		if (it == std::end(i->accepted)) return ScriptDate::DATE_INVALID;
+		if (it == std::end(i->accepted)) return new ScriptEconomyDate();
-		return (ScriptDate::Date)it->last_accepted.base();
+		return new ScriptEconomyDate(static_cast<ScriptEconomyDate::Date>(it->last_accepted.base()));
 	}
 }
 

src/script/api/script_industry.hpp

@@ -93,7 +93,7 @@ public:
 	 * @see \ref ScriptCalendarTime
 	 * @api -ai
 	 */
-	static ScriptDate::Date GetConstructionDate(IndustryID industry_id);
+	static ScriptCalendarDate *GetConstructionDate(IndustryID industry_id);
 
 	/**
 	 * Set the custom text of an industry, shown in the GUI.
@@ -265,11 +265,11 @@ public:
 	 * @param cargo_type The cargo to query, or INVALID_CARGO to query latest of all accepted cargoes.
 	 * @pre IsValidIndustry(industry_id).
 	 * @pre IsValidCargo(cargo_type) || cargo_type == INVALID_CARGO.
-	 * @return Economy-date the industry last received cargo from a delivery, or ScriptDate::DATE_INVALID on error.
+	 * @return Economy-date the industry last received cargo from a delivery, ScriptEconomyDate::IsValid() returns false on error.
 	 * @see \ref ScriptEconomyTime
 	 * @api -ai
 	 */
-	static ScriptDate::Date GetCargoLastAcceptedDate(IndustryID industry_id, CargoType cargo_type);
+	static ScriptEconomyDate *GetCargoLastAcceptedDate(IndustryID industry_id, CargoType cargo_type);
 
 	/**
 	 * Get the current control flags for an industry.

src/script/api/script_story_page.cpp

@@ -179,20 +179,21 @@ static inline bool StoryPageElementTypeRequiresText(StoryPageElementType type)
 	return ScriptCompany::ToScriptCompanyID(StoryPage::Get(story_page_id)->company);
 }
 
-/* static */ ScriptDate::Date ScriptStoryPage::GetDate(StoryPageID story_page_id)
+/* static */ ScriptCalendarDate *ScriptStoryPage::GetDate(StoryPageID story_page_id)
 {
-	EnforcePrecondition(ScriptDate::DATE_INVALID, IsValidStoryPage(story_page_id));
+	EnforcePrecondition(new ScriptCalendarDate(), IsValidStoryPage(story_page_id));
-	EnforceDeityMode(ScriptDate::DATE_INVALID);
+	EnforceDeityMode(new ScriptCalendarDate());
 
-	return (ScriptDate::Date)StoryPage::Get(story_page_id)->date.base();
+	return new ScriptCalendarDate(static_cast<ScriptCalendarDate::Date>(StoryPage::Get(story_page_id)->date.base()));
 }
 
-/* static */ bool ScriptStoryPage::SetDate(StoryPageID story_page_id, ScriptDate::Date date)
+/* static */ bool ScriptStoryPage::SetDate(StoryPageID story_page_id, ScriptCalendarDate *date)
 {
 	EnforcePrecondition(false, IsValidStoryPage(story_page_id));
 	EnforceDeityMode(false);
+	if (date == nullptr) date = new ScriptCalendarDate();
 
-	return ScriptObject::Command<CMD_SET_STORY_PAGE_DATE>::Do(story_page_id, ::TimerGameCalendar::Date{date});
+	return ScriptObject::Command<CMD_SET_STORY_PAGE_DATE>::Do(story_page_id, ::TimerGameCalendar::Date{date->date()});
 }
 
 

src/script/api/script_story_page.hpp

@@ -256,18 +256,18 @@ public:
 	 * @pre IsValidStoryPage(story_page_id).
 	 * @see \ref ScriptCalendarTime
 	 */
-	static ScriptDate::Date GetDate(StoryPageID story_page_id);
+	static ScriptCalendarDate *GetDate(StoryPageID story_page_id);
 
 	/**
 	 * Update date of a story page. The date is shown in the top left of the page
 	 * @param story_page_id The story page to set the date for.
-	 * @param date Calendar-date to display at the top of story page or ScriptDate::DATE_INVALID to disable showing date on this page. (also, @see ScriptDate)
+	 * @param date Calendar-date to display at the top of story page or null to disable showing date on this page. (also, @see ScriptCalendarDate)
 	 * @return True if the action succeeded.
 	 * @pre ScriptCompanyMode::IsDeity().
 	 * @pre IsValidStoryPage(story_page_id).
 	 * @see \ref ScriptCalendarTime
 	 */
-	static bool SetDate(StoryPageID story_page_id, ScriptDate::Date date);
+	static bool SetDate(StoryPageID story_page_id, ScriptCalendarDate *date);
 
 	/**
 	 * Update title of a story page. The title is shown in the page selector drop down.

src/script/api/script_subsidy.cpp

@@ -53,9 +53,9 @@
 	return ScriptCompany::ToScriptCompanyID(::Subsidy::Get(subsidy_id)->awarded);
 }
 
-/* static */ ScriptDate::Date ScriptSubsidy::GetExpireDate(SubsidyID subsidy_id)
+/* static */ ScriptEconomyDate *ScriptSubsidy::GetExpireDate(SubsidyID subsidy_id)
 {
-	if (!IsValidSubsidy(subsidy_id)) return ScriptDate::DATE_INVALID;
+	if (!IsValidSubsidy(subsidy_id)) return new ScriptEconomyDate();
 
 	TimerGameEconomy::YearMonthDay ymd = TimerGameEconomy::ConvertDateToYMD(TimerGameEconomy::date);
 	ymd.day = 1;
@@ -63,7 +63,7 @@
 	ymd.month = m % 12;
 	ymd.year += TimerGameEconomy::Year{m / 12};
 
-	return (ScriptDate::Date)TimerGameEconomy::ConvertYMDToDate(ymd.year, ymd.month, ymd.day).base();
+	return ScriptEconomyDate::GetDate(ymd.year.base(), ymd.month + 1, ymd.day);
 }
 
 /* static */ CargoType ScriptSubsidy::GetCargoType(SubsidyID subsidy_id)

src/script/api/script_subsidy.hpp

@@ -85,7 +85,7 @@ public:
 	 *  awarded.
 	 * @see \ref ScriptEconomyTime
 	 */
-	static ScriptDate::Date GetExpireDate(SubsidyID subsidy_id);
+	static ScriptEconomyDate *GetExpireDate(SubsidyID subsidy_id);
 
 	/**
 	 * Get the cargo type that has to be transported in order to be awarded this

src/script/api/template/template_date.sq.hpp

@@ -0,0 +1,24 @@
+/*
+ * This file is part of OpenTTD.
+ * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
+ * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "../script_date.hpp"
+
+namespace SQConvert {
+	/* Allow ScriptEconomyDate to be used as Squirrel parameter */
+	template <> struct Param<ScriptEconomyDate *> { static inline ScriptEconomyDate *Get(HSQUIRRELVM vm, int index) { return  static_cast<ScriptEconomyDate *>(sq_gettype(vm, index) == OT_NULL ? nullptr : Squirrel::GetRealInstance(vm, index, "EconomyDate")); } };
+	template <> struct Param<ScriptEconomyDate &> { static inline ScriptEconomyDate &Get(HSQUIRRELVM vm, int index) { return *static_cast<ScriptEconomyDate *>(Squirrel::GetRealInstance(vm, index, "EconomyDate")); } };
+	template <> struct Param<const ScriptEconomyDate *> { static inline const ScriptEconomyDate *Get(HSQUIRRELVM vm, int index) { return  static_cast<ScriptEconomyDate *>(sq_gettype(vm, index) == OT_NULL ? nullptr : Squirrel::GetRealInstance(vm, index, "EconomyDate")); } };
+	template <> struct Param<const ScriptEconomyDate &> { static inline const ScriptEconomyDate &Get(HSQUIRRELVM vm, int index) { return *static_cast<ScriptEconomyDate *>(Squirrel::GetRealInstance(vm, index, "EconomyDate")); } };
+	template <> struct Return<ScriptEconomyDate *> { static inline int Set(HSQUIRRELVM vm, ScriptEconomyDate *res) { if (res == nullptr) { sq_pushnull(vm); return 1; } res->AddRef(); Squirrel::CreateClassInstanceVM(vm, "EconomyDate", res, nullptr, DefSQDestructorCallback<ScriptEconomyDate>, true); return 1; } };
+
+	/* Allow ScriptCalendarDate to be used as Squirrel parameter */
+	template <> struct Param<ScriptCalendarDate *> { static inline ScriptCalendarDate *Get(HSQUIRRELVM vm, int index) { return  static_cast<ScriptCalendarDate *>(sq_gettype(vm, index) == OT_NULL ? nullptr : Squirrel::GetRealInstance(vm, index, "CalendarDate")); } };
+	template <> struct Param<ScriptCalendarDate &> { static inline ScriptCalendarDate &Get(HSQUIRRELVM vm, int index) { return *static_cast<ScriptCalendarDate *>(Squirrel::GetRealInstance(vm, index, "CalendarDate")); } };
+	template <> struct Param<const ScriptCalendarDate *> { static inline const ScriptCalendarDate *Get(HSQUIRRELVM vm, int index) { return  static_cast<ScriptCalendarDate *>(sq_gettype(vm, index) == OT_NULL ? nullptr : Squirrel::GetRealInstance(vm, index, "CalendarDate")); } };
+	template <> struct Param<const ScriptCalendarDate &> { static inline const ScriptCalendarDate &Get(HSQUIRRELVM vm, int index) { return *static_cast<ScriptCalendarDate *>(Squirrel::GetRealInstance(vm, index, "CalendarDate")); } };
+	template <> struct Return<ScriptCalendarDate *> { static inline int Set(HSQUIRRELVM vm, ScriptCalendarDate *res) { if (res == nullptr) { sq_pushnull(vm); return 1; } res->AddRef(); Squirrel::CreateClassInstanceVM(vm, "CalendarDate", res, nullptr, DefSQDestructorCallback<ScriptCalendarDate>, true); return 1; } };
+} // namespace SQConvert

src/settings_gui.cpp

@@ -1036,9 +1036,8 @@ struct GameOptionsWindow : Window {
 				this->SetWidgetDisabledState(WID_GO_GUI_FONT_AA, _fcsettings.prefer_sprite);
 				this->SetDirty();
 
-				InitFontCache(false);
+				InitFontCache(FONTSIZES_ALL);
-				InitFontCache(true);
+				ClearFontCache(FONTSIZES_ALL);
-				ClearFontCache();
 				CheckForMissingGlyphs();
 				SetupWidgetDimensions();
 				UpdateAllVirtCoords();
@@ -1051,7 +1050,7 @@ struct GameOptionsWindow : Window {
 				this->SetWidgetLoweredState(WID_GO_GUI_FONT_AA, _fcsettings.global_aa);
 				MarkWholeScreenDirty();
 
-				ClearFontCache();
+				ClearFontCache(FONTSIZES_ALL);
 				break;
 #endif /* HAS_TRUETYPE_FONT */
 

src/strings.cpp

@@ -2278,7 +2278,7 @@ std::string_view GetCurrentLanguageIsoCode()
  */
 bool MissingGlyphSearcher::FindMissingGlyphs()
 {
-	InitFontCache(this->Monospace());
+	InitFontCache(this->Monospace() ? FontSizes{FS_MONO} : FONTSIZES_REQUIRED);
 
 	this->Reset();
 	for (auto text = this->NextString(); text.has_value(); text = this->NextString()) {
@@ -2395,7 +2395,7 @@ void CheckForMissingGlyphs(bool base_font, MissingGlyphSearcher *searcher)
 			/* Our fallback font does miss characters too, so keep the
 			 * user chosen font as that is more likely to be any good than
 			 * the wild guess we made */
-			InitFontCache(searcher->Monospace());
+			InitFontCache(searcher->Monospace() ? FontSizes{FS_MONO} : FONTSIZES_REQUIRED);
 		}
 	}
 #endif
@@ -2412,12 +2412,12 @@ void CheckForMissingGlyphs(bool base_font, MissingGlyphSearcher *searcher)
 		ShowErrorMessage(GetEncodedString(STR_JUST_RAW_STRING, std::move(err_str)), {}, WL_WARNING);
 
 		/* Reset the font width */
-		LoadStringWidthTable(searcher->Monospace());
+		LoadStringWidthTable(searcher->Monospace() ? FontSizes{FS_MONO} : FONTSIZES_REQUIRED);
 		return;
 	}
 
 	/* Update the font with cache */
-	LoadStringWidthTable(searcher->Monospace());
+	LoadStringWidthTable(searcher->Monospace() ? FontSizes{FS_MONO} : FONTSIZES_REQUIRED);
 
 #if !(defined(WITH_ICU_I18N) && defined(WITH_HARFBUZZ)) && !defined(WITH_UNISCRIBE) && !defined(WITH_COCOA)
 	/*