Add a Settings.ini property to launch with the game window minimised

CHANGELOG.md

@@ -146,6 +146,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 - `RealTimeLimitProgress` and `SimTimeLimitProgress` on `Timer` are now both writable properties in Lua, and not only readable.
 
+- New `Settings.ini` property `LaunchMinimised = 0/1` to have the game window start out minimised, so that launching the game doesn't take input focus or cover other windows. Disabled by default.
+
 </details>
 
 <details><summary><b>Changed</b></summary>

Source/Managers/SettingsMan.cpp

@@ -114,6 +114,7 @@ int SettingsMan::ReadProperty(const std::string_view& propName, Reader& reader)
 	MatchProperty("EnableVSync", { reader >> g_WindowMan.m_EnableVSync; });
 	MatchProperty("Fullscreen", { reader >> g_WindowMan.m_Fullscreen; });
 	MatchProperty("UseMultiDisplays", { reader >> g_WindowMan.m_UseMultiDisplays; });
+	MatchProperty("LaunchMinimised", { reader >> g_WindowMan.m_LaunchMinimised; });
 	MatchProperty("TwoPlayerSplitscreenVertSplit", { reader >> g_FrameMan.m_TwoPlayerVSplit; });
 	MatchProperty("MasterVolume", { g_AudioMan.SetMasterVolume(std::stof(reader.ReadPropValue()) / 100.0F); });
 	MatchProperty("MuteMaster", { reader >> g_AudioMan.m_MuteMaster; });
@@ -220,6 +221,7 @@ int SettingsMan::Save(Writer& writer) const {
 	writer.NewPropertyWithValue("Fullscreen", g_WindowMan.m_Fullscreen);
 	writer.NewPropertyWithValue("EnableVSync", g_WindowMan.m_EnableVSync);
 	writer.NewPropertyWithValue("UseMultiDisplays", g_WindowMan.m_UseMultiDisplays);
+	writer.NewPropertyWithValue("LaunchMinimised", g_WindowMan.m_LaunchMinimised);
 	writer.NewPropertyWithValue("TwoPlayerSplitscreenVertSplit", g_FrameMan.m_TwoPlayerVSplit);
 
 	writer.NewLine(false, 2);

Source/Managers/WindowMan.cpp

@@ -72,6 +72,7 @@ void WindowMan::Clear() {
 	m_Fullscreen = false;
 	m_EnableVSync = true;
 	m_UseMultiDisplays = false;
+	m_LaunchMinimised = false;
 }
 
 void WindowMan::ClearMultiDisplayData() {
@@ -184,6 +185,7 @@ void WindowMan::CreatePrimaryWindow() {
 	SDL_SetBooleanProperty(windowProps, SDL_PROP_WINDOW_CREATE_RESIZABLE_BOOLEAN, true);
 	SDL_SetBooleanProperty(windowProps, SDL_PROP_WINDOW_CREATE_OPENGL_BOOLEAN, true);
 	SDL_SetBooleanProperty(windowProps, SDL_PROP_WINDOW_CREATE_FULLSCREEN_BOOLEAN, m_Fullscreen);
+	SDL_SetBooleanProperty(windowProps, SDL_PROP_WINDOW_CREATE_MINIMIZED_BOOLEAN, m_LaunchMinimised);
 	SDL_SetNumberProperty(windowProps, SDL_PROP_WINDOW_CREATE_X_NUMBER, windowPosX);
 	SDL_SetNumberProperty(windowProps, SDL_PROP_WINDOW_CREATE_Y_NUMBER, windowPosY);
 	SDL_SetNumberProperty(windowProps, SDL_PROP_WINDOW_CREATE_WIDTH_NUMBER, m_ResX * m_ResMultiplier);
@@ -207,7 +209,8 @@ void WindowMan::CreatePrimaryWindow() {
 	SDL_GL_SwapWindow(m_PrimaryWindow.get());
 	SDL_SetCursor(NULL);
 
-	if (!m_Fullscreen && IsResolutionMaximized(m_ResX, m_ResY, m_ResMultiplier)) {
+	// Maximising a minimised window would bring it back up.
+	if (!m_Fullscreen && !m_LaunchMinimised && IsResolutionMaximized(m_ResX, m_ResY, m_ResMultiplier)) {
 		SDL_MaximizeWindow(m_PrimaryWindow.get());
 	}
 

Source/Managers/WindowMan.h

@@ -238,6 +238,7 @@ namespace RTE {
 
 		bool m_EnableVSync; //!< Whether vertical synchronization is enabled.
 		bool m_UseMultiDisplays; //!< Whether the multi-display arrangement should be ignored and only the display the main window is currently positioned at should be used for fullscreen.
+		bool m_LaunchMinimised; //!< Whether the game window starts out minimised, so that launching the game doesn't take input focus or cover other windows.
 
 		bool m_DrawPostProcessBuffer; //!< Whether to draw the PostProcessBuffer while not in Activity. Resets on Frame Clear.