Enable more compiler warnings and treat them as errors.

StepmaniaCore.cmake

@@ -155,14 +155,6 @@ if(WIN32)
   endif()
 endif()
 
-include(TestBigEndian)
-test_big_endian(BIGENDIAN)
-if(${BIGENDIAN})
-  set(ENDIAN_BIG 1)
-else()
-  set(ENDIAN_LITTLE 1)
-endif()
-
 check_compile_features("${SM_CMAKE_DIR}/TestCode"
                        "${SM_CMAKE_DIR}/TestCode/test_external.c"
                        "Checking for external name shortening requirements"

src/Actor.cpp

@@ -1118,7 +1118,7 @@ void Actor::SetEffectClockString( const RString &s )
 		}
 		else
 		{
-			this->SetEffectClock(static_cast<EffectClock>(cl + CLOCK_LIGHT_1));
+			this->SetEffectClock(static_cast<EffectClock>(Enum::to_integral(cl) + CLOCK_LIGHT_1));
 		}
 	}
 }

src/Actor.h

@@ -477,7 +477,7 @@ public:
 	float GetAux() const				{ return m_current.aux; }
 
 	virtual void BeginTweening( float time, ITween *pInterp );
-	void BeginTweening( float time, TweenType tt = TWEEN_LINEAR );
+	virtual void BeginTweening( float time, TweenType tt = TWEEN_LINEAR );
 	virtual void StopTweening();
 	void Sleep( float time );
 	void QueueCommand( const RString& sCommandName );

src/ActorMultiVertex.cpp

@@ -401,9 +401,9 @@ CubicSplineN* ActorMultiVertex::GetSpline(size_t i)
 	return &(_splines[i]);
 }
 
-void ActorMultiVertex::SetState(size_t i)
+void ActorMultiVertex::SetState(int i)
 {
-	ASSERT(i < _states.size());
+	ASSERT(i >= 0 and static_cast<size_t>(i) < _states.size());
 	_cur_state= i;
 	_secs_into_state= 0.0f;
 }
@@ -1002,7 +1002,7 @@ public:
 	static size_t ValidStateIndex(T* p, lua_State *L, int pos)
 	{
 		int index= IArg(pos)-1;
-		if(index < 0 || static_cast<size_t>(index) >= p->GetNumStates())
+		if(index < 0 || index >= p->GetNumStates())
 		{
 			luaL_error(L, "Invalid state index %d.", index+1);
 		}

src/ActorMultiVertex.h

@@ -130,7 +130,7 @@ public:
 	{ ASSERT(i < _states.size()); _states[i]= s; }
 	void SetStateProperties(const std::vector<State>& new_states)
 	{ _states= new_states; SetState(0); }
-	void SetState(size_t i);
+	void SetState(int i);
 	void SetAllStateDelays(float delay);
 	float GetAnimationLengthSeconds() const;
 	void SetSecondsIntoAnimation(float seconds);

src/ArrowEffects.cpp

@@ -319,9 +319,8 @@ void ArrowEffects::Update()
 		const Style::ColumnInfo* pCols = pStyle->m_ColumnInfo[pn];
 		const SongPosition &position = GAMESTATE->m_bIsUsingStepTiming
 		? GAMESTATE->m_pPlayerState[pn]->m_Position : GAMESTATE->m_Position;
-		const float field_zoom= GAMESTATE->m_pPlayerState[pn]->m_NotefieldZoom;
+		const auto& effects= GAMESTATE->m_pPlayerState[pn]->m_PlayerOptions.GetCurrent().m_fEffects;
-		const float* effects= GAMESTATE->m_pPlayerState[pn]->m_PlayerOptions.GetCurrent().m_fEffects;
+		const auto& accels= GAMESTATE->m_pPlayerState[pn]->m_PlayerOptions.GetCurrent().m_fAccels;
-		const float* accels= GAMESTATE->m_pPlayerState[pn]->m_PlayerOptions.GetCurrent().m_fAccels;
 
 		PerPlayerData &data = g_EffectData[pn];
 		
@@ -515,8 +514,8 @@ float ArrowEffects::GetYOffset( const PlayerState* pPlayerState, int iCol, float
 		return fYOffset * fScrollSpeed;
 	}
 
-	const float* fAccels = curr_options->m_fAccels;
+	const auto& fAccels = curr_options->m_fAccels;
-	const float* fEffects = curr_options->m_fEffects;
+	const auto& fEffects = curr_options->m_fEffects;
 	
 	// TODO: Don't index by PlayerNumber.
 	PerPlayerData &data = g_EffectData[pPlayerState->m_PlayerNumber];
@@ -637,7 +636,7 @@ float ArrowEffects::GetYPos( const PlayerState* pPlayerState, int iCol, float fY
 	// TODO: Don't index by PlayerNumber.
 	const Style* pStyle = GAMESTATE->GetCurrentStyle(pPlayerState->m_PlayerNumber);
 	const Style::ColumnInfo* pCols = pStyle->m_ColumnInfo[pPlayerState->m_PlayerNumber];
-	const float* fEffects = curr_options->m_fEffects;
+	const auto& fEffects = curr_options->m_fEffects;
 	
 	// Doing the math with a precalculated result of 0 should be faster than
 	// checking whether tipsy is on. -Kyz
@@ -670,7 +669,7 @@ float ArrowEffects::GetYOffsetFromYPos(int iCol, float YPos, float fYReverseOffs
 {
 	float f = YPos;
 
-	const float* fEffects = curr_options->m_fEffects;
+	const auto& fEffects = curr_options->m_fEffects;
 	// Doing the math with a precalculated result of 0 should be faster than
 	// checking whether tipsy is on. -Kyz
 	// TODO: Don't index by PlayerNumber.
@@ -695,7 +694,7 @@ float ArrowEffects::GetXPos( const PlayerState* pPlayerState, int iColNum, float
 	float fPixelOffsetFromCenter = 0; // fill this in below
 
 	const Style* pStyle = GAMESTATE->GetCurrentStyle(pPlayerState->m_PlayerNumber);
-	const float* fEffects = curr_options->m_fEffects;
+	const auto& fEffects = curr_options->m_fEffects;
 
 	// TODO: Don't index by PlayerNumber.
 	const Style::ColumnInfo* pCols = pStyle->m_ColumnInfo[pPlayerState->m_PlayerNumber];
@@ -865,7 +864,7 @@ float ArrowEffects::GetXPos( const PlayerState* pPlayerState, int iColNum, float
 
 float ArrowEffects::GetRotationX(const PlayerState* pPlayerState, float fYOffset, bool bIsHoldCap, int iCol)
 {
-	const float* fEffects = curr_options->m_fEffects;
+	const auto& fEffects = curr_options->m_fEffects;
 	float fRotation = 0;
 	if( fEffects[PlayerOptions::EFFECT_CONFUSION_X] != 0 || fEffects[PlayerOptions::EFFECT_CONFUSION_X_OFFSET] != 0 ||
 	curr_options->m_fConfusionX[iCol] != 0
@@ -880,7 +879,7 @@ float ArrowEffects::GetRotationX(const PlayerState* pPlayerState, float fYOffset
 
 float ArrowEffects::GetRotationY(const PlayerState* pPlayerState, float fYOffset, int iCol)
 {
-	const float* fEffects = curr_options->m_fEffects;
+	const auto& fEffects = curr_options->m_fEffects;
 	float fRotation = 0;
 	if( fEffects[PlayerOptions::EFFECT_CONFUSION_Y] != 0 || fEffects[PlayerOptions::EFFECT_CONFUSION_Y_OFFSET] != 0 ||
 	curr_options->m_fConfusionY[iCol] != 0
@@ -895,7 +894,7 @@ float ArrowEffects::GetRotationY(const PlayerState* pPlayerState, float fYOffset
 
 float ArrowEffects::GetRotationZ( const PlayerState* pPlayerState, float fNoteBeat, bool bIsHoldHead, int iCol ) 
 {
-	const float* fEffects = curr_options->m_fEffects;
+	const auto& fEffects = curr_options->m_fEffects;
 	float fRotation = 0;
 	if( fEffects[PlayerOptions::EFFECT_CONFUSION] != 0 || fEffects[PlayerOptions::EFFECT_CONFUSION_OFFSET] != 0 ||
 	curr_options->m_fConfusionZ[iCol] != 0
@@ -917,7 +916,7 @@ float ArrowEffects::GetRotationZ( const PlayerState* pPlayerState, float fNoteBe
 
 float ArrowEffects::ReceptorGetRotationZ( const PlayerState* pPlayerState, int iCol ) 
 {
-	const float* fEffects = curr_options->m_fEffects;
+	const auto& fEffects = curr_options->m_fEffects;
 	float fRotation = 0;
 
 	if( curr_options->m_fConfusionZ[iCol] != 0 )
@@ -940,7 +939,7 @@ float ArrowEffects::ReceptorGetRotationZ( const PlayerState* pPlayerState, int i
 
 float ArrowEffects::ReceptorGetRotationX( const PlayerState* pPlayerState, int iCol ) 
 {
-	const float* fEffects = curr_options->m_fEffects;
+	const auto& fEffects = curr_options->m_fEffects;
 	float fRotation = 0;
 	
 	if( curr_options->m_fConfusionX[iCol] != 0 )
@@ -963,7 +962,7 @@ float ArrowEffects::ReceptorGetRotationX( const PlayerState* pPlayerState, int i
 
 float ArrowEffects::ReceptorGetRotationY( const PlayerState* pPlayerState, int iCol ) 
 {
-	const float* fEffects = curr_options->m_fEffects;
+	const auto& fEffects = curr_options->m_fEffects;
 	float fRotation = 0;
 
 	if( curr_options->m_fConfusionY[iCol] != 0 )
@@ -986,7 +985,7 @@ float ArrowEffects::ReceptorGetRotationY( const PlayerState* pPlayerState, int i
 
 float ArrowEffects::GetMoveX(int iCol)
 {
-	const float* fMoves = curr_options->m_fMovesX;
+	const auto& fMoves = curr_options->m_fMovesX;
 	float f = 0;
 	if( fMoves[iCol] != 0 )
 		f += ARROW_SIZE * fMoves[iCol];
@@ -995,7 +994,7 @@ float ArrowEffects::GetMoveX(int iCol)
 
 float ArrowEffects::GetMoveY(int iCol)
 {
-	const float* fMoves = curr_options->m_fMovesY;
+	const auto& fMoves = curr_options->m_fMovesY;
 	float f = 0;
 	if( fMoves[iCol] != 0 )
 		f += ARROW_SIZE * fMoves[iCol];
@@ -1004,7 +1003,7 @@ float ArrowEffects::GetMoveY(int iCol)
 
 float ArrowEffects::GetMoveZ(int iCol)
 {
-	const float* fMoves = curr_options->m_fMovesZ;
+	const auto& fMoves = curr_options->m_fMovesZ;
 	float f = 0;
 	if( fMoves[iCol] != 0 )
 		f += ARROW_SIZE * fMoves[iCol];
@@ -1025,7 +1024,7 @@ static float GetCenterLine()
 
 static float GetHiddenSudden()
 {
-	const float* fAppearances = curr_options->m_fAppearances;
+	const auto& fAppearances = curr_options->m_fAppearances;
 	return fAppearances[PlayerOptions::APPEARANCE_HIDDEN] *
 		fAppearances[PlayerOptions::APPEARANCE_SUDDEN];
 }
@@ -1085,7 +1084,7 @@ float ArrowGetPercentVisible(float fYPosWithoutReverse, int iCol, float fYOffset
 	if( fYPos < 0 && curr_options->m_bStealthPastReceptors == false)	// past Gray Arrows
 		return 1;	// totally visible
 
-	const float* fAppearances = curr_options->m_fAppearances;
+	const auto& fAppearances = curr_options->m_fAppearances;
 
 	float fVisibleAdjust = 0;
 
@@ -1174,7 +1173,7 @@ float ArrowEffects::GetBrightness( const PlayerState* pPlayerState, float fNoteB
 float ArrowEffects::GetZPos( const PlayerState* pPlayerState, int iCol, float fYOffset)
 {
 	float fZPos=0;
-	const float* fEffects = curr_options->m_fEffects;
+	const auto& fEffects = curr_options->m_fEffects;
 	const Style* pStyle = GAMESTATE->GetCurrentStyle(pPlayerState->m_PlayerNumber);
 	
 	// TODO: Don't index by PlayerNumber.
@@ -1296,7 +1295,7 @@ float ArrowEffects::GetZPos( const PlayerState* pPlayerState, int iCol, float fY
 
 bool ArrowEffects::NeedZBuffer()
 {
-	const float* fEffects = curr_options->m_fEffects;
+	const auto& fEffects = curr_options->m_fEffects;
 	// We also need to use the Z buffer if twirl is in play, because of
 	// hold modulation. -vyhd (OpenITG r623)
 	if( fEffects[PlayerOptions::EFFECT_BUMPY] != 0 ||

src/Background.cpp

@@ -669,11 +669,11 @@ void BackgroundImpl::LoadFromSong( const Song* pSong )
 	// Look for the random file marker, and replace the segment with LoadFromRandom.
 	for( unsigned i=0; i<mainlayer.m_aBGChanges.size(); i++ )
 	{
-		const BackgroundChange change = mainlayer.m_aBGChanges[i];
+		const auto bgChange = mainlayer.m_aBGChanges[i];
-		if( change.m_def.m_sFile1 != RANDOM_BACKGROUND_FILE )
+		if( bgChange.m_def.m_sFile1 != RANDOM_BACKGROUND_FILE )
 			continue;
 
-		float fStartBeat = change.m_fStartBeat;
+		float fStartBeat = bgChange.m_fStartBeat;
 		float fEndBeat = pSong->GetLastBeat();
 		if( i+1 < mainlayer.m_aBGChanges.size() )
 			fEndBeat = mainlayer.m_aBGChanges[i+1].m_fStartBeat;
@@ -681,7 +681,7 @@ void BackgroundImpl::LoadFromSong( const Song* pSong )
 		mainlayer.m_aBGChanges.erase( mainlayer.m_aBGChanges.begin()+i );
 		--i;
 
-		LoadFromRandom( fStartBeat, fEndBeat, change );
+		LoadFromRandom( fStartBeat, fEndBeat, bgChange);
 	}
 
 	// At this point, we shouldn't have any BGChanges to "".  "" is an invalid name.

src/BitmapText.cpp

@@ -647,7 +647,7 @@ void BitmapText::CropLineToWidth(size_t l, int width)
 	{
 		int used_width= width;
 		std::wstring& line= m_wTextLines[l];
-		int fit= m_pFont->GetGlyphsThatFit(line, &used_width);
+		const auto fit= m_pFont->GetGlyphsThatFit(line, &used_width);
 		if(fit < line.size())
 		{
 			line.erase(line.begin()+fit, line.end());

src/CMakeLists.txt

@@ -118,6 +118,25 @@ target_compile_definitions("${SM_EXE_NAME}" PRIVATE $<$<CONFIG:MinSizeRel>:MINSI
 target_compile_definitions("${SM_EXE_NAME}" PRIVATE
                            $<$<CONFIG:RelWithDebInfo>:RELWITHDEBINFO>)
 
+# For Apple Clang, CMAKE_<LANG>_COMPILER_ID will be set to AppleClang instead of Clang.
+if (POLICY CMP0025)
+  cmake_policy(SET CMP0025 NEW)
+endif()
+
+# COMPILE_WARNING_AS_ERROR is only supported starting with cmake 3.24.
+# Continue using -Werror and /WX to treat warnings as errors until cmake >= 3.24 is required.
+set_property(TARGET "${SM_EXE_NAME}" PROPERTY COMPILE_WARNING_AS_ERROR ON)
+target_compile_options("${SM_EXE_NAME}" PRIVATE
+  $<$<CXX_COMPILER_ID:GNU>:
+    -Werror -Wall -Wextra -Wno-unused -Wno-unused-parameter -Wno-unknown-pragmas>
+  $<$<CXX_COMPILER_ID:Clang>:
+    -Werror -Wall -Wextra -Wno-unused -Wno-unused-parameter -Wno-unknown-pragmas -Wno-undefined-var-template>
+  $<$<CXX_COMPILER_ID:AppleClang>:
+    -Werror -Wall -Wextra -Wno-unused -Wno-unused-parameter -Wno-unknown-pragmas -Wno-undefined-var-template -Wno-deprecated-declarations -Wno-unused-command-line-argument>
+  $<$<CXX_COMPILER_ID:MSVC>:
+    /WX /W4 /wd4100 /wd4189 /wd4244 /wd4267 /wd4702>
+)
+
 set(SM_COMPILE_FLAGS "")
 
 if(WITH_SSE2)
@@ -176,7 +195,10 @@ if(WIN32)
       COMMENT "Generating file to allow for easier stack traces.")
   endif()
 elseif(APPLE)
+  # TODO should we set CRASH_HANDLER and other things like LINUX does below? Why is that logic specfic to LINUX?
   target_compile_definitions("${SM_EXE_NAME}" PRIVATE BACKTRACE_METHOD_X86_DARWIN)
+  target_compile_definitions("${SM_EXE_NAME}" PRIVATE BACKTRACE_LOOKUP_METHOD_TEXT="dladdr")
+  target_compile_definitions("${SM_EXE_NAME}" PRIVATE BACKTRACE_LOOKUP_METHOD_DLADDR)
   target_compile_definitions("${SM_EXE_NAME}" PRIVATE MACOSX)
   set_target_properties(
     "${SM_EXE_NAME}"

src/CharacterManager.cpp

@@ -90,7 +90,6 @@ Character* CharacterManager::GetDefaultCharacter()
 
 	/* We always have the default character. */
 	FAIL_M("There must be a default character available!");
-	return nullptr;
 }
 
 void CharacterManager::DemandGraphics()

src/Course.cpp

@@ -657,7 +657,7 @@ void Course::GetTrailUnsortedEndless( const std::vector<CourseEntry> &entries, T
 	typedef std::vector<Steps*> StepsVector;
 
 	std::set<Song*> alreadySelected;
-	Song* lastSongSelected;
+	Song* lastSongSelected = nullptr;
 	std::vector<SongAndSteps> vSongAndSteps;
 	for (auto e = entries.begin(); e != entries.end(); ++e)
 	{
@@ -743,7 +743,7 @@ void Course::GetTrailUnsortedEndless( const std::vector<CourseEntry> &entries, T
 		ASSERT(e->iChooseIndex >= 0);
 		// If we're trying to pick BEST100 when only 99 songs exist,
 		// we have a problem, so bail out
-		if (e->iChooseIndex >= vpSongs.size()) {
+		if (static_cast<size_t>(e->iChooseIndex) >= vpSongs.size()) {
 			continue;
 		}
 
@@ -1029,7 +1029,6 @@ RageColor Course::GetColor() const
 		else					return SORT_LEVEL4_COLOR;
 	default:
 		FAIL_M( ssprintf("Invalid course sort %d.", int(PREFSMAN->m_CourseSortOrder)) );
-		return RageColor(1,1,1,1);  // white; should never reach here
 	}
 }
 

src/Course.h

@@ -17,8 +17,16 @@ struct Game;
 
 const int MAX_EDIT_COURSE_TITLE_LENGTH = 16;
 
-inline PlayMode CourseTypeToPlayMode( CourseType ct ) { return (PlayMode)(PLAY_MODE_NONSTOP+ct); }
+inline PlayMode CourseTypeToPlayMode( CourseType ct ) {
-inline CourseType PlayModeToCourseType( PlayMode pm ) { return (CourseType)(pm-PLAY_MODE_NONSTOP); }
+	switch (ct) {
+		case COURSE_TYPE_NONSTOP:  return PLAY_MODE_NONSTOP;
+		case COURSE_TYPE_ONI:      return PLAY_MODE_ONI;
+		case COURSE_TYPE_ENDLESS:  return PLAY_MODE_ENDLESS;
+		case COURSE_TYPE_SURVIVAL: return PLAY_MODE_BATTLE;
+		default:                   break;
+	}
+	return PlayMode_Invalid;
+}
 
 enum SongSort
 {

src/CreateZip.cpp

@@ -543,29 +543,25 @@ ulg crc32(ulg crc, const uch *buf, size_t len)
 class TZip
 {
 public:
-	TZip() : pfout(nullptr),ooffset(0),oerr(false),writ(0),hasputcen(false),zfis(0),hfin(0)
+	TZip() = default;
-	{
+	~TZip() = default;
-	}
-	~TZip()
-	{
-	}
 
 	// These variables say about the file we're writing into
 	// We can write to pipe, file-by-handle, file-by-name, memory-to-memmapfile
-	RageFile *pfout;             // if valid, we'll write here (for files or pipes)
+	RageFile *pfout{nullptr};             // if valid, we'll write here (for files or pipes)
-	unsigned ooffset;         // for pfout, this is where the pointer was initially
+	unsigned ooffset{0};         // for pfout, this is where the pointer was initially
-	ZRESULT oerr;             // did a write operation give rise to an error?
+	ZRESULT oerr{false};             // did a write operation give rise to an error?
-	unsigned writ;            // how have we written. This is maintained by Add, not write(), to avoid confusion over seeks
+	unsigned writ{0};            // how have we written. This is maintained by Add, not write(), to avoid confusion over seeks
-	unsigned int opos;        // current pos in the mmap
+	unsigned int opos{0};        // current pos in the mmap
-	unsigned int mapsize;     // the size of the map we created
+	unsigned int mapsize{0};     // the size of the map we created
-	bool hasputcen;           // have we yet placed the central directory?
+	bool hasputcen{false};           // have we yet placed the central directory?
 	//
-	TZipFileInfo *zfis;       // each file gets added onto this list, for writing the table at the end
+	TZipFileInfo *zfis{nullptr};       // each file gets added onto this list, for writing the table at the end
 
 	ZRESULT Start(RageFile *f);
 	static unsigned sflush(void *param,const char *buf, unsigned *size);
 	static unsigned swrite(void *param,const char *buf, unsigned size);
-	unsigned int write(const char *buf,unsigned int size);
+	unsigned int write(const char *srcbuf,unsigned int size);
 	bool oseek(unsigned int pos);
 	ZRESULT Close();
 
@@ -575,7 +571,7 @@ public:
 	ulg attr; iztimes times; ulg timestamp;  // all open_* methods set these
 	long isize,ired;         // size is not set until close() on pips
 	ulg crc;                                 // crc is not set until close(). iwrit is cumulative
-	RageFile *hfin;           // for input files and pipes
+	RageFile *hfin{nullptr};           // for input files and pipes
 	const char *bufin; unsigned int lenin,posin; // for memory
 	// and a variable for what we've done with the input: (i.e. compressed it!)
 	ulg csize;                               // compressed size, set by the compression routines
@@ -586,7 +582,7 @@ public:
 	ZRESULT open_file(const TCHAR *fn);
 	ZRESULT open_dir();
 	ZRESULT set_times();
-	unsigned read(char *buf, unsigned size);
+	unsigned read(char *srcbuf, unsigned size);
 	ZRESULT iclose();
 
 	ZRESULT ideflate(TZipFileInfo *zfi);
@@ -628,13 +624,11 @@ unsigned TZip::swrite(void *param,const char *buf, unsigned size)
 	TZip *zip=(TZip*)param;
 	return zip->write(buf,size);
 }
-unsigned int TZip::write(const char *buf,unsigned int size)
+unsigned int TZip::write(const char *srcbuf,unsigned int size)
 {
-	const char *srcbuf=buf;
 	if (pfout != nullptr)
 	{
-		unsigned long writ = pfout->Write( srcbuf, size );
+		return pfout->Write( srcbuf, size );
-		return writ;
 	}
 	oerr=ZR_NOTINITED;
 	return 0;
@@ -724,7 +718,7 @@ ZRESULT TZip::set_times()
 	return ZR_OK;
 }
 
-unsigned TZip::read(char *buf, unsigned size)
+unsigned TZip::read(char *srcbuf, unsigned size)
 {
 	if (bufin!=0)
 	{
@@ -732,19 +726,19 @@ unsigned TZip::read(char *buf, unsigned size)
 		ulg red = lenin-posin;
 		if (red>size)
 			red=size;
-		memcpy(buf, bufin+posin, red);
+		memcpy(srcbuf, bufin+posin, red);
 		posin += red;
 		ired += red;
-		crc = crc32(crc, (uch*)buf, red);
+		crc = crc32(crc, (uch*)srcbuf, red);
 		return red;
 	}
 	else if (hfin!=0)
 	{
-		int red = hfin->Read(buf,size);
+		int red = hfin->Read(srcbuf,size);
 		if (red <= 0)
 			return 0;
 		ired += red;
-		crc = crc32(crc, (uch*)buf, red);
+		crc = crc32(crc, (uch*)srcbuf, red);
 		return red;
 	}
 	else

src/CryptHelpers.h

@@ -3,7 +3,11 @@
 
 #if !defined(DISABLE_CRYPTO)
 
+// tomcrypt_cfg.h redefines malloc, realloc, calloc
+#pragma warning( push )
+#pragma warning( disable : 4565 )
 #include <tomcrypt.h>
+#pragma warning ( pop )
 
 class PRNGWrapper
 {

src/CryptManager.cpp

@@ -1,6 +1,10 @@
 #include "global.h"
 
+// tomcrypt_cfg.h redefines malloc, realloc, calloc
+#pragma warning( push )
+#pragma warning( disable : 4565 )
 #include <tomcrypt.h>
+#pragma warning ( pop )
 
 #include "CryptManager.h"
 #include "RageUtil.h"

src/CubicSpline.cpp

@@ -226,9 +226,9 @@ float loop_space_difference(float a, float b, float spatial_extent)
 	if(spatial_extent == 0.0f) { return norm_diff; }
 	const float plus_diff= a - (b + spatial_extent);
 	const float minus_diff= a - (b - spatial_extent);
-	const float abs_norm_diff= abs(norm_diff);
+	const float abs_norm_diff= std::abs(norm_diff);
-	const float abs_plus_diff= abs(plus_diff);
+	const float abs_plus_diff= std::abs(plus_diff);
-	const float abs_minus_diff= abs(minus_diff);
+	const float abs_minus_diff= std::abs(minus_diff);
 	if(abs_norm_diff < abs_plus_diff)
 	{
 		if(abs_norm_diff < abs_minus_diff)

src/DifficultyList.cpp

@@ -14,7 +14,7 @@
 /** @brief Specifies the max number of charts available for a song.
  *
  * This includes autogenned charts. */
-#define MAX_METERS (NUM_Difficulty * NUM_StepsType) + MAX_EDITS_PER_SONG
+inline constexpr auto MAX_METERS = (Enum::to_integral(NUM_Difficulty) * Enum::to_integral(NUM_StepsType)) + MAX_EDITS_PER_SONG;
 
 REGISTER_ACTOR_CLASS( StepsDisplayList );
 
@@ -24,8 +24,8 @@ StepsDisplayList::StepsDisplayList()
 
 	FOREACH_ENUM( PlayerNumber, pn )
 	{
-		SubscribeToMessage( (MessageID)(Message_CurrentStepsP1Changed+pn) );
+		SubscribeToMessage( (MessageID)(Message_CurrentStepsP1Changed+Enum::to_integral(pn)) );
-		SubscribeToMessage( (MessageID)(Message_CurrentTrailP1Changed+pn) );
+		SubscribeToMessage( (MessageID)(Message_CurrentTrailP1Changed+Enum::to_integral(pn)) );
 	}
 }
 
@@ -213,13 +213,13 @@ void StepsDisplayList::UpdatePositions()
 
 void StepsDisplayList::PositionItems()
 {
-	for( int i = 0; i < MAX_METERS; ++i )
+	for( size_t i = 0; i < MAX_METERS; ++i )
 	{
-		bool bUnused = ( i >= (int)m_Rows.size() );
+		bool bUnused = ( i >= m_Rows.size() );
 		m_Lines[i].m_Meter.SetVisible( !bUnused );
 	}
 
-	for( int m = 0; m < (int)m_Rows.size(); ++m )
+	for( size_t m = 0; m < m_Rows.size(); ++m )
 	{
 		Row &row = m_Rows[m];
 		bool bHidden = row.m_bHidden;
@@ -237,10 +237,10 @@ void StepsDisplayList::PositionItems()
 		m_Lines[m].m_Meter.SetY( row.m_fY );
 	}
 
-	for( int m=0; m < MAX_METERS; ++m )
+	for( size_t m=0; m < MAX_METERS; ++m )
 	{
 		bool bHidden = true;
-		if( m_bShown && m < (int)m_Rows.size() )
+		if( m_bShown && m < m_Rows.size() )
 			bHidden = m_Rows[m].m_bHidden;
 
 		float fDiffuseAlpha = bHidden?0.0f:1.0f;
@@ -303,7 +303,7 @@ void StepsDisplayList::SetFromGameState()
 	UpdatePositions();
 	PositionItems();
 
-	for( int m = 0; m < MAX_METERS; ++m )
+	for( size_t m = 0; m < MAX_METERS; ++m )
 		m_Lines[m].m_Meter.FinishTweening();
 }
 
@@ -323,7 +323,7 @@ void StepsDisplayList::TweenOnScreen()
 	FOREACH_HumanPlayer( pn )
 		ON_COMMAND( m_Cursors[pn] );
 
-	for( int m = 0; m < MAX_METERS; ++m )
+	for( size_t m = 0; m < MAX_METERS; ++m )
 		ON_COMMAND( m_Lines[m].m_Meter );
 
 	this->SetHibernate( 0.5f );
@@ -373,8 +373,8 @@ void StepsDisplayList::HandleMessage( const Message &msg )
 {
 	FOREACH_ENUM( PlayerNumber, pn )
 	{
-		if( msg.GetName() == MessageIDToString((MessageID)(Message_CurrentStepsP1Changed+pn))  ||
+		if( msg.GetName() == MessageIDToString((MessageID)(Message_CurrentStepsP1Changed+Enum::to_integral(pn)))  ||
-			msg.GetName() == MessageIDToString((MessageID)(Message_CurrentTrailP1Changed+pn)) ) 
+			msg.GetName() == MessageIDToString((MessageID)(Message_CurrentTrailP1Changed+Enum::to_integral(pn))) ) 
 		SetFromGameState();
 	}
 

src/DisplaySpec.h

@@ -89,14 +89,15 @@ public:
 	}
 
 	// Create a specification for a display supporting a single (and currently active) mode
-	DisplaySpec(std::string id, std::string name, DisplayMode mode) : m_sId( id ), m_sName( name ), m_bIsVirtual( false ),
+	DisplaySpec(std::string id, std::string name, DisplayMode mode) : m_sId( id ), m_sName( name ),
-		m_bCurModeActive( true ), m_CurMode( mode )
+		m_bCurModeActive( true ), m_CurMode( mode ), m_bIsVirtual( false )
 	{
 		m_sModes.insert( mode );
 		m_rectBounds = RectI( 0, 0, mode.width, mode.height );
 	}
 
 	DisplaySpec( const DisplaySpec &other ) = default;
+	DisplaySpec& operator=(const DisplaySpec& other) = default;
 
 	std::string name() const
 	{

src/EnumHelper.h

@@ -68,6 +68,12 @@ namespace Enum
 	}
 
 	void SetMetatable( lua_State *L, LuaReference &EnumTable, LuaReference &EnumIndexTable, const char *szName );
+
+	template<typename E>
+	constexpr auto to_integral(E e)
+	{
+		return static_cast<typename std::underlying_type<E>::type>(e);
+	}
 };
 
 const RString &EnumToString( int iVal, int iMax, const char **szNameArray, std::unique_ptr<RString> *pNameCache ); // XToString helper

src/Font.cpp

@@ -254,7 +254,7 @@ int Font::GetLineHeightInSourcePixels( const std::wstring &szLine ) const
 }
 
 // width is a pointer so that we can return the used width through it.
-int Font::GetGlyphsThatFit(const std::wstring& line, int* width) const
+size_t Font::GetGlyphsThatFit(const std::wstring& line, int* width) const
 {
 	if(*width == 0)
 	{
@@ -262,7 +262,7 @@ int Font::GetGlyphsThatFit(const std::wstring& line, int* width) const
 		return line.size();
 	}
 	int curr_width= 0;
-	unsigned int i= 0;
+	size_t i= 0;
 	for(i= 0; i < line.size() && curr_width < *width; ++i)
 	{
 		curr_width+= GetGlyph(line[i]).m_iHadvance;
@@ -507,7 +507,7 @@ void Font::LoadFontPageSettings( FontPageSettings &cfg, IniFile &ini, const RStr
 
 				wchar_t c;
 				if( sCodepoint.substr(0, 2) == "U+" && IsHexVal(sCodepoint.substr(2)) )
-					sscanf( sCodepoint.substr(2).c_str(), "%x", &c );
+					sscanf( sCodepoint.substr(2).c_str(), "%lc", &c );
 				else if( sCodepoint.size() > 0 &&
 						utf8_get_char_len(sCodepoint[0]) == int(sCodepoint.size()) )
 				{
@@ -558,11 +558,11 @@ void Font::LoadFontPageSettings( FontPageSettings &cfg, IniFile &ini, const RStr
 				}
 				// We must have either 1 match (just the codeset) or 4 (the whole thing).
 				int count = -1;
-				int first = 0;
+				unsigned int first = 0;
 				if( !asMatches[2].empty() )
 				{
 					sscanf( asMatches[2].c_str(), "%x", &first );
-					int last;
+					unsigned int last;
 					sscanf( asMatches[3].c_str(), "%x", &last );
 					if(last < first)
 					{

src/Font.h

@@ -154,7 +154,7 @@ public:
 
 	int GetLineWidthInSourcePixels( const std::wstring &szLine ) const;
 	int GetLineHeightInSourcePixels( const std::wstring &szLine ) const;
-	int GetGlyphsThatFit(const std::wstring& line, int* width) const;
+	size_t GetGlyphsThatFit(const std::wstring& line, int* width) const;
 
 	bool FontCompleteForString( const std::wstring &str ) const;
 

src/FontManager.cpp

@@ -81,7 +81,7 @@ void FontManager::UnloadFont( Font *fp )
 		return;
 	}
 
-	FAIL_M( ssprintf("Unloaded an unknown font (%p)", fp) );
+	FAIL_M( ssprintf("Unloaded an unknown font (%p)", static_cast<void*>(fp)) );
 }
 
 /*

src/GameCommand.cpp

@@ -543,8 +543,10 @@ static bool AreStyleAndPlayModeCompatible( const Style *style, PlayMode pm )
 			if( style->m_StyleType==StyleType_OnePlayerTwoSides ||
 				style->m_StyleType==StyleType_TwoPlayersSharedSides )
 				return false;
-		default: return true;
+		default: break;
 	}
+
+	return true;
 }
 
 bool GameCommand::IsPlayable( RString *why ) const

src/GameManager.cpp

@@ -98,7 +98,7 @@ static const StepsTypeInfo g_StepsTypeInfos[] = {
 	{ "kickbox-insect", 6, true, StepsTypeCategory_Single },
 	{ "kickbox-arachnid", 8, true, StepsTypeCategory_Single },
 };
-
+static_assert( ARRAYLEN(g_StepsTypeInfos) == NUM_StepsType, "ARRAYLEN(g_StepsTypeInfos) != NUM_StepsType" );
 
 // Important:  Every game must define the buttons: "Start", "Back", "MenuLeft", "Operator" and "MenuRight"
 static const AutoMappings g_AutoKeyMappings_Dance = AutoMappings (
@@ -3441,7 +3441,6 @@ bool GameManager::IsGameEnabled( const Game *pGame )
 
 const StepsTypeInfo &GameManager::GetStepsTypeInfo( StepsType st )
 {
-	ASSERT( ARRAYLEN(g_StepsTypeInfos) == NUM_StepsType );
 	ASSERT_M( st < NUM_StepsType, ssprintf("StepsType %d < NUM_StepsType (%d)", st, NUM_StepsType) );
 	return g_StepsTypeInfos[st];
 }

src/GameState.cpp

@@ -1153,7 +1153,7 @@ void GameState::Update( float fDelta )
 		if( !m_bGoalComplete[p] && IsGoalComplete(p) )
 		{
 			m_bGoalComplete[p] = true;
-			MESSAGEMAN->Broadcast( (MessageID)(Message_GoalCompleteP1+p) );
+			MESSAGEMAN->Broadcast( (MessageID)(Message_GoalCompleteP1+Enum::to_integral(p)) );
 		}
 	}
 
@@ -1844,7 +1844,7 @@ StageResult GameState::GetStageResult( PlayerNumber pn ) const
 			{
 			case PLAYER_1:	return (m_fTugLifePercentP1>=0.5f)?RESULT_WIN:RESULT_LOSE;
 			case PLAYER_2:	return (m_fTugLifePercentP1<0.5f)?RESULT_WIN:RESULT_LOSE;
-			default:	FAIL_M("Invalid player for battle! Aborting..."); return RESULT_LOSE;
+			default:	FAIL_M("Invalid player for battle! Aborting...");
 			}
 		default: break;
 	}

src/Grade.cpp

@@ -53,7 +53,7 @@ Grade GradeToOldGrade( Grade g )
 	// There used to be 7 grades (plus fail) but grades can now be defined by themes.
 	// So we need to re-scale the grade bands based on how many actual grades the theme defines.
 	if( g < NUM_GRADE_TIERS_USED )
-		g = (Grade)std::lround((double)g * Grade_Tier07 / (NUM_GRADE_TIERS_USED - 1));
+		g = (Grade)std::lround((double)g * Enum::to_integral(Grade_Tier07) / (NUM_GRADE_TIERS_USED - 1));
 
 	return g;
 }

src/IniFile.cpp

@@ -88,6 +88,7 @@ bool IniFile::ReadFile( RageFileBasic &f )
 					}
 					break;
 				}
+				[[fallthrough]];
 			default:
 			keyvalue:
 				if(keychild == nullptr)

src/InputFilter.cpp

@@ -112,7 +112,7 @@ namespace
  * For pad play, a value of 20ms-50ms seems to result in a better experience.
  * For keyboard play, this is often set to 0.
  * */
-static Preference<float> g_fInputDebounceTime( "InputDebounceTime", 0.02 );
+static Preference<float> g_fInputDebounceTime( "InputDebounceTime", 0.02f );
 
 InputFilter*	INPUTFILTER = nullptr;	// global and accessible from anywhere in our program
 

src/LightsManager.cpp

@@ -362,6 +362,7 @@ void LightsManager::Update( float fDeltaTime )
 			}
 
 			// fall through to blink on button presses
+			[[fallthrough]];
 		}
 
 		case LIGHTSMODE_DEMONSTRATION:
@@ -383,6 +384,7 @@ void LightsManager::Update( float fDeltaTime )
 			}
 
 			// fall through to blink on button presses
+			[[fallthrough]];
 		}
 
 		case LIGHTSMODE_ATTRACT:

src/LyricsLoader.cpp

@@ -71,7 +71,7 @@ bool LyricsLoader::LoadFromLRCFile(const RString& sPath, Song& out)
 		if( sValueName.EqualsNoCase("COLOUR") || sValueName.EqualsNoCase("COLOR") )
 		{
 			// set color var here for this segment
-			int r, g, b;
+			unsigned int r, g, b;
 			int result = sscanf( sValueData.c_str(), "0x%2x%2x%2x", &r, &g, &b );
 			// According to the Dance With Intensity readme, one can set up to
 			// ten colors in a line and access them via "{cX}", where X is 0-9.

src/MemoryCardManager.cpp

@@ -481,7 +481,7 @@ void MemoryCardManager::CheckStateChanges()
 					if( LastState == MemoryCardState_Ready )
 					{
 						m_soundDisconnect.Play(true, &params);
-						MESSAGEMAN->Broadcast( (MessageID)(Message_CardRemovedP1+p) );
+						MESSAGEMAN->Broadcast( (MessageID)(Message_CardRemovedP1+Enum::to_integral(p)) );
 					}
 					break;
 				case MemoryCardState_Ready:

src/ModIcon.cpp

@@ -45,7 +45,7 @@ void ModIcon::Load( RString sMetricsGroup )
 
 	// stop words
 	STOP_WORDS.Load( sMetricsGroup, "StopWords" );
-	m_vStopWords.empty();
+	// TODO should m_vStopWords be cleared?
 	split(STOP_WORDS, ",", m_vStopWords);
 
 	Set("");

src/ModIconRow.cpp

@@ -152,10 +152,7 @@ void ModIconRow::SetFromGameState()
 	{
 		RString sOption = vsOptions[i];
 		int iPerferredCol = OptionToPreferredColumn( sOption );
-		clamp( iPerferredCol, 0, (int)m_vpModIcon.size()-1 );
+		iPerferredCol = clamp( iPerferredCol, 0, (int)m_vpModIcon.size()-1 );
-
-		if( iPerferredCol == -1 )
-			continue;	// skip
 
 		// search for a vacant spot
 		for( int j=iPerferredCol; j<NUM_OPTION_ICONS; j++ )

src/Model.cpp

@@ -181,7 +181,7 @@ void Model::LoadMaterialsFromMilkshapeAscii( const RString &_sPath )
 				RageVector4 Ambient;
 				if( sscanf(sLine, "%f %f %f %f", &Ambient[0], &Ambient[1], &Ambient[2], &Ambient[3]) != 4 )
 					THROW;
-				memcpy( &Material.Ambient, &Ambient, sizeof(Material.Ambient) );
+				Material.Ambient = Ambient;
 
 				// diffuse
 				if( f.GetLine( sLine ) <= 0 )
@@ -189,7 +189,7 @@ void Model::LoadMaterialsFromMilkshapeAscii( const RString &_sPath )
 				RageVector4 Diffuse;
 				if( sscanf(sLine, "%f %f %f %f", &Diffuse[0], &Diffuse[1], &Diffuse[2], &Diffuse[3]) != 4 )
 					THROW;
-				memcpy( &Material.Diffuse, &Diffuse, sizeof(Material.Diffuse) );
+				Material.Diffuse = Diffuse;
 
 				// specular
 				if( f.GetLine( sLine ) <= 0 )
@@ -197,7 +197,7 @@ void Model::LoadMaterialsFromMilkshapeAscii( const RString &_sPath )
 				RageVector4 Specular;
 				if( sscanf(sLine, "%f %f %f %f", &Specular[0], &Specular[1], &Specular[2], &Specular[3]) != 4 )
 					THROW;
-				memcpy( &Material.Specular, &Specular, sizeof(Material.Specular) );
+				Material.Specular = Specular;
 
 				// emissive
 				if( f.GetLine( sLine ) <= 0 )
@@ -205,7 +205,7 @@ void Model::LoadMaterialsFromMilkshapeAscii( const RString &_sPath )
 				RageVector4 Emissive;
 				if( sscanf (sLine, "%f %f %f %f", &Emissive[0], &Emissive[1], &Emissive[2], &Emissive[3]) != 4 )
 					THROW;
-				memcpy( &Material.Emissive, &Emissive, sizeof(Material.Emissive) );
+				Material.Emissive = Emissive;
 
 				// shininess
 				if( f.GetLine( sLine ) <= 0 )

src/Model.h

@@ -56,6 +56,8 @@ public:
 	// Lua
 	virtual void PushSelf( lua_State *L );
 
+	Model& operator=(const Model& rhs) = delete;
+
 private:
 	RageModelGeometry		*m_pGeometry;
 
@@ -86,8 +88,6 @@ private:
 	float			m_fCurAnimationRate;
 	bool			m_bLoop;
 	bool			m_bDrawCelShaded; // for Lua models
-
-	Model& operator=(const Model& rhs);
 };
 
 #endif

src/MusicWheel.cpp

@@ -59,9 +59,12 @@ static SortOrder ForceAppropriateSort( PlayMode pm, SortOrder so )
 		case SORT_NONSTOP_COURSES:
 		case SORT_ENDLESS_COURSES:
 			so = SortOrder_Invalid;
+			break;
 		default:
-			return so;
+			break;
 	}
+	
+	return so;
 }
 
 MusicWheelItem *MusicWheel::MakeItem()
@@ -152,7 +155,7 @@ void MusicWheel::BeginScreen()
 		const std::vector<MusicWheelItemData *> &from = getWheelItemsData(SORT_MODE_MENU);
 		for( unsigned i=0; i<from.size(); i++ )
 		{
-			ASSERT( &*from[i]->m_pAction != nullptr );
+			ASSERT( !from[i]->m_pAction.isNull() );
 			if( from[i]->m_pAction->DescribesCurrentModeForAllPlayers() )
 			{
 				m_sLastModeMenuItem = from[i]->m_pAction->m_sName;
@@ -427,7 +430,7 @@ void MusicWheel::GetSongList( std::vector<Song*> &arraySongs, SortOrder so )
 			apAllSongs = SONGMAN->GetSongs(GAMESTATE->m_sPreferredSongGroup);
 			break;
 		}
-		// otherwise fall through
+		[[fallthrough]];
 	default:
 		apAllSongs = SONGMAN->GetAllSongs();
 		break;

src/MusicWheelItem.cpp

@@ -424,14 +424,14 @@ void MusicWheelItem::HandleMessage( const Message &msg )
 				break;
 		}
 
-		Message msg( "Set" );
+		Message tmpMsg( "Set" );
-		msg.SetParam( "Song", pWID->m_pSong );
+		tmpMsg.SetParam( "Song", pWID->m_pSong );
-		msg.SetParam( "Course", pWID->m_pCourse );
+		tmpMsg.SetParam( "Course", pWID->m_pCourse );
-		msg.SetParam( "Text", pWID->m_sText );
+		tmpMsg.SetParam( "Text", pWID->m_sText );
-		msg.SetParam( "Type", MusicWheelItemTypeToString(type) );
+		tmpMsg.SetParam( "Type", MusicWheelItemTypeToString(type) );
-		msg.SetParam( "Color", pWID->m_color );
+		tmpMsg.SetParam( "Color", pWID->m_color );
-		msg.SetParam( "Label", pWID->m_sLabel );
+		tmpMsg.SetParam( "Label", pWID->m_sLabel );
-		this->HandleMessage( msg );
+		this->HandleMessage( tmpMsg );
 		
 		RefreshGrades();
 	}

src/NoteData.cpp

@@ -30,7 +30,7 @@ bool NoteData::IsComposite() const
 {
 	for( int track = 0; track < GetNumTracks(); ++track )
 	{
-		for (std::pair<int, TapNote> const &tn : m_TapNotes[track])
+		for (const auto& tn : m_TapNotes[track])
 			if( tn.second.pn != PLAYER_INVALID )
 				return true;
 	}
@@ -1340,12 +1340,24 @@ NoteData::_all_tracks_iterator<ND, iter, TN>::_all_tracks_iterator( const _all_t
 }
 
 template<typename ND, typename iter, typename TN>
-	NoteData::_all_tracks_iterator<ND, iter, TN>::~_all_tracks_iterator()
+NoteData::_all_tracks_iterator<ND, iter, TN> &NoteData::_all_tracks_iterator<ND, iter, TN>::operator=( const _all_tracks_iterator &other )
 {
-	if(m_pNoteData != nullptr)
+	_all_tracks_iterator tmp (other);
-	{
+
-		m_pNoteData->RemoveATIFromList(this);
+#define SWAP_OTHER( x ) std::swap( x, tmp.x )
-	}
+	SWAP_OTHER( m_pNoteData );
+	SWAP_OTHER( m_vBeginIters );
+	SWAP_OTHER( m_vCurrentIters );
+	SWAP_OTHER( m_vEndIters );
+	SWAP_OTHER( m_iTrack );
+	SWAP_OTHER( m_bReverse );
+	SWAP_OTHER( m_PrevCurrentRows );
+	SWAP_OTHER( m_StartRow );
+	SWAP_OTHER( m_EndRow );
+#undef SWAP_OTHER
+	m_pNoteData->AddATIToList(this);
+
+	return *this;
 }
 
 template<typename ND, typename iter, typename TN>

src/NoteData.h

@@ -81,7 +81,8 @@ public:
 	public:
 		_all_tracks_iterator( ND &nd, int iStartRow, int iEndRow, bool bReverse, bool bInclusive );
 		_all_tracks_iterator( const _all_tracks_iterator &other );
-		~_all_tracks_iterator();
+		~_all_tracks_iterator() { if(m_pNoteData != nullptr) { m_pNoteData->RemoveATIFromList(this); } }
+		_all_tracks_iterator &operator=( const _all_tracks_iterator &other );
 		_all_tracks_iterator &operator++();		// preincrement
 		_all_tracks_iterator operator++( int dummy );	// postincrement
 		//_all_tracks_iterator &operator--();		// predecrement

src/NoteDataUtil.cpp

@@ -1514,6 +1514,7 @@ static void GetTrackMapping( StepsType st, NoteDataUtil::TrackMapping tt, int Nu
 		}
 		if (needsBackwards) break;
 	}
+	[[fallthrough]];
 	case NoteDataUtil::mirror:
 		{
 			for( int t=0; t<NumTracks; t++ )
@@ -1973,7 +1974,7 @@ static void HyperShuffleNotes( NoteData &inout, int iStartIndex, int iEndIndex)
 		std::shuffle(viTargetTracks.begin(), viTargetTracks.end(), g_RandomNumberGenerator);
 
 		// Go through the tracks in their shuffled order and drop tap notes.
-		for(int i = 0; i < viTargetTracks.size(); i++)
+		for(size_t i = 0; i < viTargetTracks.size(); i++)
 		{
 			const int targetTrack = viTargetTracks[i];
 			const TapNote current_tn = vtnTargetTaps[i];

src/NoteDisplay.cpp

@@ -983,7 +983,7 @@ void NoteDisplay::DrawHoldPart(std::vector<Sprite*> &vpSpr,
 
 		// (step 2 of vector handling)
 		RageVector3 render_left;
-		if(abs(render_forward.z) > 0.9f) // 0.9 arbitrariliy picked.
+		if(std::abs(render_forward.z) > 0.9f) // 0.9 arbitrariliy picked.
 		{
 			RageVec3Cross(&render_left, &pos_y_vec, &render_forward);
 		}

src/NoteField.cpp

@@ -674,7 +674,7 @@ float FindLastDisplayedBeat( const PlayerState* pPlayerState, int iDrawDistanceB
 
 	bool bBoomerang;
 	{
-		const float* fAccels = pPlayerState->m_PlayerOptions.GetCurrent().m_fAccels;
+		const auto& fAccels = pPlayerState->m_PlayerOptions.GetCurrent().m_fAccels;
 		bBoomerang = (fAccels[PlayerOptions::ACCEL_BOOMERANG] != 0);
 	}
 
@@ -794,13 +794,12 @@ void NoteField::DrawPrimitives()
 	FOREACH_TimingSegmentType( tst )
 		segs[tst] = &(pTiming->GetTimingSegments(tst));
 
-	unsigned i = 0;
 	// Draw beat bars
 	if( ( GAMESTATE->IsEditing() || SHOW_BEAT_BARS ) && pTiming != nullptr )
 	{
 		const std::vector<TimingSegment *> &tSigs = *segs[SEGMENT_TIME_SIG];
 		int iMeasureIndex = 0;
-		for (i = 0; i < tSigs.size(); i++)
+		for (size_t i = 0; i < tSigs.size(); i++)
 		{
 			const TimeSignatureSegment *ts = ToTimeSignature(tSigs[i]);
 			int iSegmentEndRow = (i + 1 == tSigs.size()) ? m_FieldRenderArgs.last_row : tSigs[i+1]->GetRow();
@@ -848,7 +847,7 @@ void NoteField::DrawPrimitives()
 #define draw_all_segments(str_exp, name, caps_name)	\
 		horiz_align= caps_name##_IS_LEFT_SIDE ? align_right : align_left; \
 		side_sign= caps_name##_IS_LEFT_SIDE ? -1 : 1; \
-		for(unsigned int i= 0; i < segs[SEGMENT_##caps_name]->size(); ++i) \
+		for(size_t i= 0; i < segs[SEGMENT_##caps_name]->size(); ++i) \
 		{ \
 			const name##Segment* seg= To##name((*segs[SEGMENT_##caps_name])[i]); \
 			if(seg->GetRow() >= m_FieldRenderArgs.first_row && \
@@ -903,9 +902,6 @@ void NoteField::DrawPrimitives()
 			AttackArray &attacks = GAMESTATE->m_bIsUsingStepTiming ?
 				GAMESTATE->m_pCurSteps[PLAYER_1]->m_Attacks :
 				GAMESTATE->m_pCurSong->m_Attacks;
-			// XXX: We're somehow getting here when attacks is null. Find the actual cause later.
-			if (&attacks)
-			{
 			for (Attack const &a : attacks)
 			{
 				float fBeat = timing.GetBeatFromElapsedTime(a.fStartSecond);
@@ -917,7 +913,6 @@ void NoteField::DrawPrimitives()
 				}
 			}
 		}
-		}
 
 		if( !GAMESTATE->m_bIsUsingStepTiming )
 		{

src/NotesLoaderBMS.cpp

@@ -544,9 +544,8 @@ bool BMSChart::Load( const RString &chartPath )
 	std::vector<RString> lines;
 	Tree.evaluateBMSTree(headers, lines);
 
-	for (std::vector<RString>::iterator i = lines.begin(); i != lines.end(); ++i)
+	for (const auto& line : lines)
 	{
-		RString line = *i;
 		RString data = line.substr(7);
 		int measure = atoi(line.substr(1, 3).c_str());
 		int channel = atoi(line.substr(4, 2).c_str());
@@ -963,6 +962,8 @@ StepsType BMSChartReader::DetermineStepsType()
 				case 4:		return StepsType_dance_single;
 				case 5:
 					if( nonEmptyTracks.find(BMS_RAW_P2_KEY2) != nonEmptyTracks.end() ) return StepsType_popn_five;
+
+					[[fallthrough]];
 				case 6:
 					// FIXME: There's no way to distinguish between these types.
 					// They use the same number of tracks. Assume it's a Beat
@@ -1087,7 +1088,7 @@ bmFrac toFraction(double f)
 	long long upper = 1LL, lower = 1LL;
 	df = 1;
 
-	while (abs(df - f) > 0.000001)
+	while (std::abs(df - f) > 0.000001)
 	{
 		if (df < f)
 		{
@@ -1326,7 +1327,7 @@ bool BMSChartReader::ReadNoteData()
 
 		if( channel == 3 ) // bpm change
 		{
-			int bpm;
+			unsigned int bpm;
 			if( sscanf(obj.value, "%x", &bpm) == 1 )
 			{
 				if( bpm > 0 ) td.SetBPMAtRow( row, measureAdjust * (currentBPM = bpm) );

src/NotesLoaderJson.cpp

@@ -89,21 +89,17 @@ static void Deserialize(BackgroundChange &o, const Json::Value &root )
 
 static void Deserialize( TapNote &o, const Json::Value &root )
 {
-	//if( o.type != TapNoteType_Tap )
+	if( root.isInt() ) {
-	if( root.isInt() )
 		o.type = (TapNoteType)root["Type"].asInt();
-	//if( o.type == TapNoteType_HoldHead )
+	}
+
+	// TODO should all of this also be within the if statement?
+	// It was not in the if statement previously, but that may have been unintentional.
 	o.subType = (TapNoteSubType)root["SubType"].asInt();
-	//root["Source"] = (int)source;
-	//if( !o.sAttackModifiers.empty() )
 	o.sAttackModifiers = root["AttackModifiers"].asString();
-	//if( o.fAttackDurationSeconds > 0 )
 	o.fAttackDurationSeconds = (float)root["AttackDurationSeconds"].asDouble();
-	//if( o.bKeysound )
 	o.iKeysoundIndex = root["KeysoundIndex"].asInt();
-	//if( o.iDuration > 0 )
 	o.iDuration = root["Duration"].asInt();
-	//if( o.pn != PLAYER_INVALID )
 	o.pn = (PlayerNumber)root["PlayerNumber"].asInt();
 }
 

src/NotesLoaderSM.cpp

@@ -952,10 +952,10 @@ bool SMLoader::LoadFromBGChangesVector( BackgroundChange &change, std::vector<RS
 		change.m_def.m_sColor1 = aBGChangeValues[9];
 		change.m_def.m_sColor1.Replace( '^', ',' );
 		change.m_def.m_sColor1 = RageColor::NormalizeColorString( change.m_def.m_sColor1 );
-		// fall through
+		[[fallthrough]];
 	case 9:
 		change.m_sTransition = aBGChangeValues[8];
-		// fall through
+		[[fallthrough]];
 	case 8:
 	{
 		RString tmp = aBGChangeValues[7];
@@ -966,11 +966,11 @@ bool SMLoader::LoadFromBGChangesVector( BackgroundChange &change, std::vector<RS
 			return false;
 		}
 		change.m_def.m_sFile2 = aBGChangeValues[7];
-		// fall through
+		[[fallthrough]];
 	}
 	case 7:
 		change.m_def.m_sEffect = aBGChangeValues[6];
-		// fall through
+		[[fallthrough]];
 	case 6:
 		// param 7 overrides this.
 		// Backward compatibility:
@@ -990,16 +990,16 @@ bool SMLoader::LoadFromBGChangesVector( BackgroundChange &change, std::vector<RS
 			if( bRewindMovie )
 				change.m_def.m_sEffect = SBE_StretchRewind;
 		}
-		// fall through
+		[[fallthrough]];
 	case 4:
 		// param 9 overrides this.
 		// Backward compatibility:
 		if( change.m_sTransition.empty() )
 			change.m_sTransition = (StringToInt( aBGChangeValues[3] ) != 0) ? "CrossFade" : "";
-		// fall through
+		[[fallthrough]];
 	case 3:
 		change.m_fRate = StringToFloat( aBGChangeValues[2] );
-		// fall through
+		[[fallthrough]];
 	case 2:
 	{
 		RString tmp = aBGChangeValues[1];
@@ -1010,11 +1010,10 @@ bool SMLoader::LoadFromBGChangesVector( BackgroundChange &change, std::vector<RS
 			return false;
 		}
 		change.m_def.m_sFile1 = aBGChangeValues[1];
-		// fall through
+		[[fallthrough]];
 	}
 	case 1:
 		change.m_fStartBeat = StringToFloat( aBGChangeValues[0] );
-		// fall through
 	}
 
 	return aBGChangeValues.size() >= 2;
@@ -1461,6 +1460,7 @@ void SMLoader::ParseBGChangesString(const RString& _sChanges, std::vector<std::v
 				break;
 			}
 			// deliberate fall-through if not found. treat it as a normal string like before
+			[[fallthrough]];
 		}
 		// everything else should be safe
 		default:

src/OptionRow.cpp

@@ -857,7 +857,7 @@ void OptionRow::Reload()
 		ImportOptions( vpns );
 		FOREACH_HumanPlayer( p )
 			AfterImportOptions( p );
-		// fall through
+		[[fallthrough]];
 	}
 
 	case RELOAD_CHANGED_ENABLED:
@@ -865,6 +865,9 @@ void OptionRow::Reload()
 		FOREACH_HumanPlayer( pn )
 			PositionUnderlines( pn );
 		break;
+
+	default:
+		break;
 	}
 
 	// TODO: Nothing uses this yet and it causes skips when changing options.

src/OptionRowHandler.h

@@ -231,7 +231,7 @@ inline void VerifySelected(SelectType st, std::vector<bool> &selected, const RSt
 				sName.c_str(), num_selected, static_cast<int>(selected.size()));
 			for(unsigned int e= 0; e < selected.size(); ++e)
 			{
-				if(selected[e] && e != first_selected)
+				if(selected[e] && (first_selected < 0 || e != static_cast<uint32_t>(first_selected)))
 				{
 					selected[e]= false;
 				}

src/OptionsCursor.cpp

@@ -91,7 +91,7 @@ void OptionsCursor::StopTweening()
 	}
 }
 
-void OptionsCursor::BeginTweening( float fSecs )
+void OptionsCursor::BeginTweening( float fSecs, TweenType tt )
 {
 	ActorFrame::BeginTweening( fSecs );
 

src/OptionsCursor.h

@@ -19,7 +19,7 @@ public:
 	void Load( const RString &sMetricsGroup, bool bLoadCanGos );
 
 	void StopTweening();
-	void BeginTweening( float fSecs );
+	void BeginTweening( float fSecs, TweenType tt = TWEEN_LINEAR );
 	void SetBarWidth( int iWidth );
 	int GetBarWidth() const;
 	void SetCanGo( bool bCanGoLeft, bool bCanGoRight );

src/Player.cpp

@@ -1136,8 +1136,8 @@ void Player::Update( float fDeltaTime )
 		 * .5 before the row. Use a very slow song (around 2 BPM) as a test case: without
 		 * rounding, autoplay steps early. -glenn */
 		const float fPositionSeconds = m_pPlayerState->m_Position.m_fMusicSeconds - PREFSMAN->m_fPadStickSeconds;
-		const float fSongBeat = m_pPlayerState->GetDisplayedTiming().GetBeatFromElapsedTime( fPositionSeconds );
+		const float fSongBeatTmp = m_pPlayerState->GetDisplayedTiming().GetBeatFromElapsedTime( fPositionSeconds );
-		const int iRowNow = BeatToNoteRowNotRounded( fSongBeat );
+		const int iRowNow = BeatToNoteRowNotRounded( fSongBeatTmp );
 
 		if( iRowNow >= 0 )
 		{
@@ -2285,6 +2285,7 @@ void Player::Step( int col, int row, const RageTimer &tm, bool bHeld, bool bRele
 					break;
 				}
 				// Fall through to default.
+				[[fallthrough]];
 			default:
 				if( (pTN->type == TapNoteType_Lift) == bRelease )
 				{
@@ -3213,22 +3214,22 @@ void Player::SetJudgment( int iRow, int iTrack, const TapNote &tn, TapNoteScore
 		lua_createtable( L, 0, m_NoteData.GetNumTracks() ); // TapNotes this row
 		lua_createtable( L, 0, m_NoteData.GetNumTracks() ); // HoldHeads of tracks held at this row.
 
-		for( int iTrack = 0; iTrack < m_NoteData.GetNumTracks(); ++iTrack )
+		for( int iTrackTmp = 0; iTrackTmp < m_NoteData.GetNumTracks(); ++iTrackTmp )
 		{
-			NoteData::iterator tn = m_NoteData.FindTapNote(iTrack, iRow);
+			NoteData::iterator tnTmp = m_NoteData.FindTapNote(iTrackTmp, iRow);
-			if( tn != m_NoteData.end(iTrack) )
+			if( tnTmp != m_NoteData.end(iTrackTmp) )
 			{
-				tn->second.PushSelf(L);
+				tnTmp->second.PushSelf(L);
-				lua_rawseti(L, -3, iTrack + 1);
+				lua_rawseti(L, -3, iTrackTmp + 1);
 			}
 			else
 			{
 				int iHeadRow;
-				if( m_NoteData.IsHoldNoteAtRow( iTrack, iRow, &iHeadRow ) )
+				if( m_NoteData.IsHoldNoteAtRow( iTrackTmp, iRow, &iHeadRow ) )
 				{
-					NoteData::iterator hold = m_NoteData.FindTapNote(iTrack, iHeadRow);
+					NoteData::iterator hold = m_NoteData.FindTapNote(iTrackTmp, iHeadRow);
 					hold->second.PushSelf(L);
-					lua_rawseti(L, -2, iTrack + 1);
+					lua_rawseti(L, -2, iTrackTmp + 1);
 				}
 			}
 		}

src/PlayerOptions.h

@@ -82,10 +82,11 @@ public:
 		m_fModTimerOffset(0), m_SpeedfModTimerOffset(1.0f),
 		m_fDrawSize(0), m_SpeedfDrawSize(1.0f),
 		m_fDrawSizeBack(0), m_SpeedfDrawSizeBack(1.0f),
-		m_bMuteOnError(false), m_FailType(FailType_Immediate),
+		m_bMuteOnError(false), 
 		m_bStealthType(false), m_bStealthPastReceptors(false),
 		m_bDizzyHolds(false), m_bZBuffer(false),
 		m_bCosecant(false),
+		m_FailType(FailType_Immediate),
 		m_MinTNSToHideNotes(PREFSMAN->m_MinTNSToHideNotes)
 	{
 		m_sNoteSkin = "";
@@ -132,6 +133,7 @@ public:
 	bool operator==( const PlayerOptions &other ) const;
 	bool operator!=( const PlayerOptions &other ) const { return !operator==(other); }
 	PlayerOptions& operator=(PlayerOptions const& other);
+	PlayerOptions(const PlayerOptions& other) { operator=(other); }
 
 	/** @brief The various acceleration mods. */
 	enum Accel {

src/PlayerStageStats.cpp

@@ -391,7 +391,7 @@ void PlayerStageStats::SetLifeRecordAt( float fLife, float fStepsSecond )
 	}
 	m_fLifeRecord[fStepsSecond] = fLife;
 
-	Message msg(static_cast<MessageID>(Message_LifeMeterChangedP1+m_player_number));
+	Message msg(static_cast<MessageID>(Message_LifeMeterChangedP1+Enum::to_integral(m_player_number)));
 	msg.SetParam("Life", fLife);
 	msg.SetParam("StepsSecond", fStepsSecond);
 	MESSAGEMAN->Broadcast(msg);

src/PrefsManager.cpp

@@ -267,9 +267,6 @@ PrefsManager::PrefsManager() :
 	m_sAdditionalCourseFoldersWritable( "AdditionalCourseFoldersWritable",	"", nullptr, PreferenceType::Immutable ),
 	m_sAdditionalFoldersReadOnly	( "AdditionalFoldersReadOnly",		"", nullptr, PreferenceType::Immutable ),
 	m_sAdditionalFoldersWritable	( "AdditionalFoldersWritable",		"", nullptr, PreferenceType::Immutable ),
-	m_sAdditionalSongFolders	( "AdditionalSongFolders",		"", nullptr, PreferenceType::Deprecated ),
-	m_sAdditionalCourseFolders	( "AdditionalCourseFolders",		"", nullptr, PreferenceType::Deprecated ),
-	m_sAdditionalFolders		( "AdditionalFolders",			"", nullptr, PreferenceType::Deprecated ),
 	m_sDefaultTheme			( "DefaultTheme",			"Simply Love" ),
 	m_sLastSeenVideoDriver		( "LastSeenVideoDriver",		"" ),
 	m_sVideoRenderers		( "VideoRenderers",			"" ),	// StepMania.cpp sets these on first run:
@@ -311,8 +308,10 @@ PrefsManager::PrefsManager() :
 	m_bLogCheckpoints		( "LogCheckpoints",	false ),
 	m_bShowLoadingWindow		( "ShowLoadingWindow",	true ),
 	m_bPseudoLocalize		( "PseudoLocalize",	false ),
-	m_show_theme_errors		( "ShowThemeErrors",	false )
+	m_show_theme_errors		( "ShowThemeErrors",	false ),
-
+	m_sAdditionalSongFolders	( "AdditionalSongFolders",		"", nullptr, PreferenceType::Deprecated ),
+	m_sAdditionalCourseFolders	( "AdditionalCourseFolders",		"", nullptr, PreferenceType::Deprecated ),
+	m_sAdditionalFolders		( "AdditionalFolders",			"", nullptr, PreferenceType::Deprecated )
 {
 	Init();
 	ReadPrefsFromDisk();

src/Profile.cpp

@@ -96,7 +96,7 @@ void Profile::ClearSongs()
 int Profile::HighScoresForASong::GetNumTimesPlayed() const
 {
 	int iCount = 0;
-	for (std::pair<StepsID, HighScoresForASteps> const &i : m_StepsHighScores)
+	for (const auto& i : m_StepsHighScores)
 	{
 		iCount += i.second.hsl.GetNumTimesPlayed();
 	}
@@ -106,7 +106,7 @@ int Profile::HighScoresForASong::GetNumTimesPlayed() const
 int Profile::HighScoresForACourse::GetNumTimesPlayed() const
 {
 	int iCount = 0;
-	for (std::pair<TrailID const, HighScoresForATrail> const &i : m_TrailHighScores)
+	for (const auto& i : m_TrailHighScores)
 	{
 		iCount += i.second.hsl.GetNumTimesPlayed();
 	}
@@ -394,7 +394,7 @@ float Profile::GetSongsActual( StepsType st, Difficulty dc ) const
 	{
 		Song* pSong = id.first.ToSong();
 
-		CHECKPOINT_M( ssprintf("Profile::GetSongsActual: %p", pSong) );
+		CHECKPOINT_M( ssprintf("Profile::GetSongsActual: %p", static_cast<void*>(pSong)) );
 
 		// If the Song isn't loaded on the current machine, then we can't 
 		// get radar values to compute dance points.
@@ -411,7 +411,7 @@ float Profile::GetSongsActual( StepsType st, Difficulty dc ) const
 		{
 			const StepsID &sid = j.first;
 			Steps* pSteps = sid.ToSteps( pSong, true );
-			CHECKPOINT_M( ssprintf("Profile::GetSongsActual: song %p, steps %p", pSong, pSteps) );
+			CHECKPOINT_M( ssprintf("Profile::GetSongsActual: song %p, steps %p", static_cast<void*>(pSong), static_cast<void*>(pSteps)) );
 
 			// If the Steps isn't loaded on the current machine, then we can't 
 			// get radar values to compute dance points.
@@ -421,7 +421,7 @@ float Profile::GetSongsActual( StepsType st, Difficulty dc ) const
 			if( pSteps->m_StepsType != st )
 				continue;
 
-			CHECKPOINT_M( ssprintf("Profile::GetSongsActual: n %s = %p", sid.ToString().c_str(), pSteps) );
+			CHECKPOINT_M( ssprintf("Profile::GetSongsActual: n %s = %p", sid.ToString().c_str(), static_cast<void*>(pSteps)) );
 			if( pSteps->GetDifficulty() != dc )
 			{
 				continue;	// skip
@@ -1605,7 +1605,7 @@ XNode* Profile::SaveGeneralDataCreateNode() const
 
 	{
 		XNode* pNumSongsPlayedByStyle = pGeneralDataNode->AppendChild("NumSongsPlayedByStyle");
-		for (std::pair<StyleID const, int> const iter : m_iNumSongsPlayedByStyle)
+		for (const auto& iter : m_iNumSongsPlayedByStyle)
 		{
 			const StyleID &s = iter.first;
 			int iNumPlays = iter.second;

src/RageDisplay.h

@@ -112,44 +112,30 @@ public:
 		PAL(PAL_),
 		fDisplayAspectRatio(fDisplayAspectRatio_) {}
 
-	VideoModeParams(const VideoModeParams &other):
+	VideoModeParams(const VideoModeParams &other) = default;
-	windowed(other.windowed), sDisplayId(other.sDisplayId),
-	width(other.width), height(other.height),
-	bpp(other.bpp), rate(other.rate),
-	vsync(other.vsync), interlaced(other.interlaced),
-	bSmoothLines(other.bSmoothLines), bTrilinearFiltering(other.bTrilinearFiltering),
-	bAnisotropicFiltering(other.bAnisotropicFiltering), bWindowIsFullscreenBorderless(other.bWindowIsFullscreenBorderless),
-	sWindowTitle(other.sWindowTitle), sIconFile(other.sIconFile),
-	PAL(other.PAL), fDisplayAspectRatio(other.fDisplayAspectRatio)
-	{}
 
-	VideoModeParams(): windowed(false), width(0), height(0),
+	VideoModeParams() = default;
-					   bpp(0), rate(0), vsync(false), interlaced(false),
-					   bSmoothLines(false), bTrilinearFiltering(false),
-					   bAnisotropicFiltering(false), bWindowIsFullscreenBorderless(false),
-					   sWindowTitle(RString()), sIconFile(RString()),
-					   PAL(false), fDisplayAspectRatio(0.0f) {}
 
 	// Subclassing VideoModeParams in ActualVideoModeParams. Make destructor virtual just in case
 	// someone tries to delete one of those through a pointer to base...
-	virtual ~VideoModeParams() {}
+	virtual ~VideoModeParams() = default;
 
-	bool windowed;
+	bool windowed{false};
-	RString sDisplayId;
+	RString sDisplayId{};
-	int width;
+	int width{0};
-	int height;
+	int height{0};
-	int bpp;
+	int bpp{0};
-	int rate;
+	int rate{0};
-	bool vsync;
+	bool vsync{false};
-	bool interlaced;
+	bool interlaced{false};
-	bool bSmoothLines;
+	bool bSmoothLines{false};
-	bool bTrilinearFiltering;
+	bool bTrilinearFiltering{false};
-	bool bAnisotropicFiltering;
+	bool bAnisotropicFiltering{false};
-	bool bWindowIsFullscreenBorderless;
+	bool bWindowIsFullscreenBorderless{false};
-	RString sWindowTitle;
+	RString sWindowTitle{};
-	RString sIconFile;
+	RString sIconFile{};
-	bool PAL;
+	bool PAL{false};
-	float fDisplayAspectRatio;
+	float fDisplayAspectRatio{0.0f};
 };
 
 /**
@@ -171,6 +157,8 @@ public:
 		renderOffscreen( renderOffscreen )
 	{ }
 	ActualVideoModeParams (const ActualVideoModeParams &other) = default;
+	ActualVideoModeParams& operator=(const ActualVideoModeParams& other) = default;
+
 
 	// If bWindowIsFullscreenBorderless is true,
 	// then these properties will differ from width/height (which describe the

src/RageDisplay_D3D.cpp

@@ -744,7 +744,7 @@ void RageDisplay_D3D::SendCurrentMatrices()
 				0.0f,   0.0f,  0.0f, 0.0f,
 				0.5f,  -0.5f,  0.0f, 1.0f
 			);
-			g_pd3dDevice->SetTransform( (D3DTRANSFORMSTATETYPE)(D3DTS_TEXTURE0+tu), (D3DMATRIX*)&tex );
+			g_pd3dDevice->SetTransform( (D3DTRANSFORMSTATETYPE)(D3DTS_TEXTURE0+Enum::to_integral(tu)), (D3DMATRIX*)&tex );
 
 			// Tell D3D to use transformed reflection vectors as texture co-ordinate 0
 			// and then transform this coordinate by the specified texture matrix.
@@ -765,7 +765,7 @@ void RageDisplay_D3D::SendCurrentMatrices()
 				tex1.m[3][0], tex1.m[3][1],  tex1.m[3][3],	0,
 				0,				0,			0,		0
 			);
-			g_pd3dDevice->SetTransform( D3DTRANSFORMSTATETYPE(D3DTS_TEXTURE0+tu), (D3DMATRIX*)&tex2 );
+			g_pd3dDevice->SetTransform( D3DTRANSFORMSTATETYPE(D3DTS_TEXTURE0+Enum::to_integral(tu)), (D3DMATRIX*)&tex2 );
 
 			g_pd3dDevice->SetTextureStageState( tu, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_PASSTHRU );
 		}

src/RageDisplay_D3D.h

@@ -3,6 +3,8 @@
 #ifndef RAGE_DISPLAY_D3D_H
 #define RAGE_DISPLAY_D3D_H
 
+#include "RageDisplay.h"
+
 class RageDisplay_D3D: public RageDisplay
 {
 public:

src/RageDisplay_GLES2.cpp

@@ -169,7 +169,10 @@ namespace
 
 	void FixLittleEndian()
 	{
-#if defined(ENDIAN_LITTLE)
+		if constexpr (!Endian::little) {
+			return;
+		}
+
 		static bool bInitialized = false;
 		if (bInitialized)
 			return;
@@ -197,7 +200,6 @@ namespace
 				pf.masks[mask] = m;
 			}
 		}
-#endif
 	}
 	namespace Caps
 	{

src/RageDisplay_OGL.cpp

@@ -213,7 +213,10 @@ struct GLPixFmtInfo_t {
 
 static void FixLittleEndian()
 {
-#if defined(ENDIAN_LITTLE)
+	if constexpr (!Endian::little) {
+		return;
+	}
+
 	static bool bInitialized = false;
 	if (bInitialized)
 		return;
@@ -241,7 +244,6 @@ static void FixLittleEndian()
 			pf.masks[mask] = m;
 		}
 	}
-#endif
 }
 
 static void TurnOffHardwareVBO()
@@ -2213,7 +2215,7 @@ uintptr_t RageDisplay_Legacy::CreateTexture(
 
 	/* If the image is paletted, but we're not sending it to a paletted image,
 	 * set up glPixelMap. */
-	SetPixelMapForSurface( glImageFormat, glTexFormat, pImg->format->palette );
+	SetPixelMapForSurface( glImageFormat, glTexFormat, pImg->format->palette.get() );
 
 	// HACK:  OpenGL 1.2 types aren't available in GLU 1.3.  Don't call GLU for mip
 	// mapping if we're using an OGL 1.2 type and don't have >= GLU 1.3.
@@ -2433,7 +2435,7 @@ void RageDisplay_Legacy::UpdateTexture(
 	{
 		GLenum glTexFormat = 0;
 		glGetTexLevelParameteriv( GL_PROXY_TEXTURE_2D, 0, GLenum(GL_TEXTURE_INTERNAL_FORMAT), (GLint *) &glTexFormat );
-		SetPixelMapForSurface( glImageFormat, glTexFormat, pImg->format->palette );
+		SetPixelMapForSurface( glImageFormat, glTexFormat, pImg->format->palette.get() );
 	}
 
 	glTexSubImage2D( GL_TEXTURE_2D, 0,
@@ -2691,7 +2693,7 @@ void RageDisplay_Legacy::SetLineWidth(float fWidth)
 	glLineWidth(fWidth);
 }
 
-RString RageDisplay_Legacy::GetTextureDiagnostics(unsigned iTexture) const
+RString RageDisplay_Legacy::GetTextureDiagnostics(uintptr_t iTexture) const
 {
 	/*
 		s << (bGenerateMipMaps? "gluBuild2DMipmaps":"glTexImage2D");

src/RageDisplay_OGL.h

@@ -115,7 +115,7 @@ public:
 	virtual void SetPolygonMode( PolygonMode pm );
 	virtual void SetLineWidth( float fWidth );
 
-	RString GetTextureDiagnostics( unsigned id ) const;
+	RString GetTextureDiagnostics( uintptr_t id ) const;
 
 protected:
 	void DrawQuadsInternal( const RageSpriteVertex v[], int iNumVerts );

src/RageException.h

@@ -9,7 +9,7 @@
  * The original documentation stated this was a class for some reason. */
 namespace RageException
 {
-	void NORETURN Throw( const char *fmt, ... ) PRINTF(1,2);
+	void SM_NORETURN Throw( const char *fmt, ... ) PRINTF(1,2);
 	void SetCleanupHandler( void (*pHandler)(const RString &sError) );
 }
 

src/RageFileBasic.cpp

@@ -439,7 +439,7 @@ int RageFileObj::FillReadBuf()
 	 * the two is old data that we've read.  (Don't mangle that data; we can use it
 	 * for seeking backwards.) */
 	const int iBufAvail = BSIZE - (m_pReadBuf-m_pReadBuffer) - m_iReadBufAvail;
-	ASSERT_M( iBufAvail >= 0, ssprintf("%p, %p, %i", m_pReadBuf, m_pReadBuffer, (int) BSIZE ) );
+	ASSERT_M( iBufAvail >= 0, ssprintf("%p, %p, %i", static_cast<void*>(m_pReadBuf), static_cast<void*>(m_pReadBuffer), BSIZE ) );
 	const int iSize = this->ReadInternal( m_pReadBuf+m_iReadBufAvail, iBufAvail );
 
 	if( iSize > 0 )

src/RageFileDriverDirect.cpp

@@ -204,7 +204,7 @@ RageFileObjDirect *RageFileObjDirect::Copy() const
 	if( ret == nullptr )
 		RageException::Throw( "Couldn't reopen \"%s\": %s", m_sPath.c_str(), strerror(iErr) );
 
-	ret->Seek( (int)lseek( m_iFD, 0, SEEK_CUR ) );
+	ret->Seek( (int)DoLseek( m_iFD, 0, SEEK_CUR ) );
 
 	return ret;
 }
@@ -322,7 +322,7 @@ RageFileObjDirect::~RageFileObjDirect()
 	
 	if( m_iFD != -1 )
 	{
-		if( close( m_iFD ) == -1 )
+		if( DoClose( m_iFD ) == -1 )
 		{
 			WARN( ssprintf("Error closing %s: %s", this->m_sPath.c_str(), strerror(errno)) );
 			SetError( strerror(errno) );
@@ -391,7 +391,7 @@ RageFileObjDirect::~RageFileObjDirect()
 
 int RageFileObjDirect::ReadInternal( void *pBuf, size_t iBytes )
 {
-	int iRet = read( m_iFD, pBuf, iBytes );
+	int iRet = DoRead( m_iFD, pBuf, iBytes );
 	if( iRet == -1 )
 	{
 		SetError( strerror(errno) );
@@ -407,7 +407,7 @@ static int RetriedWrite( int iFD, const void *pBuf, size_t iCount )
 	int iTries = 3, iRet;
 	do
 	{
-		iRet = write( iFD, pBuf, iCount );
+		iRet = DoWrite( iFD, pBuf, iCount );
 	}
 	while( iRet == -1 && errno == EINTR && iTries-- );
 
@@ -448,16 +448,16 @@ int RageFileObjDirect::WriteInternal( const void *pBuf, size_t iBytes )
 
 int RageFileObjDirect::SeekInternal( int iOffset )
 {
-	return (int)lseek( m_iFD, iOffset, SEEK_SET );
+	return (int)DoLseek( m_iFD, iOffset, SEEK_SET );
 }
 
 int RageFileObjDirect::GetFileSize() const
 {
-	const int iOldPos = (int)lseek( m_iFD, 0, SEEK_CUR );
+	const int iOldPos = (int)DoLseek( m_iFD, 0, SEEK_CUR );
 	ASSERT_M( iOldPos != -1, ssprintf("\"%s\": %s", m_sPath.c_str(), strerror(errno)) );
-	const int iRet = (int)lseek( m_iFD, 0, SEEK_END );
+	const int iRet = (int)DoLseek( m_iFD, 0, SEEK_END );
 	ASSERT_M( iRet != -1, ssprintf("\"%s\": %s", m_sPath.c_str(), strerror(errno)) );
-	lseek( m_iFD, iOldPos, SEEK_SET );
+	DoLseek( m_iFD, iOldPos, SEEK_SET );
 	return iRet;
 }
 

src/RageFileDriverDirectHelpers.h

@@ -7,13 +7,28 @@
 #include <fcntl.h>
 #endif
 
-#define DoOpen open
 #define DoStat stat
 #define DoMkdir mkdir
 #define DoFindFirstFile FindFirstFile
 #define DoRename rename
 #define DoRemove remove
+#if defined(WIN32)
+#define DoOpen _open
+#define DoRmdir _rmdir
+#define DoLseek _lseek
+#define DoClose _close
+#define DoRead _read
+#define DoWrite _write
+#define DoGetCwd _getcwd
+#else
+#define DoOpen open
 #define DoRmdir rmdir
+#define DoLseek lseek
+#define DoClose close
+#define DoRead read
+#define DoWrite write
+#define DoGetCwd getcwd
+#endif
 RString DoPathReplace( const RString &sPath );
 
 #if defined(WIN32)

src/RageFileDriverZip.cpp

@@ -61,8 +61,8 @@ bool RageFileDriverZip::Load( const RString &sPath )
 bool RageFileDriverZip::Load( RageFileBasic *pFile )
 {
 	ASSERT( m_pZip == nullptr ); /* don't load twice */
-	m_sPath = ssprintf("%p", pFile);
+	m_sPath = ssprintf("%p", static_cast<void*>(pFile));
-	m_Mutex.SetName( ssprintf("RageFileDriverZip(%p)", pFile) );
+	m_Mutex.SetName( ssprintf("RageFileDriverZip(%p)", static_cast<void*>(pFile)) );
 
 	m_pZip = pFile;
 

src/RageFileManager.cpp

@@ -114,8 +114,8 @@ size_t zipRead(void *pOpaque, mz_uint64 file_ofs, void *pBuf, size_t n)
 {
 	RageFile *f = static_cast<RageFile*>(pOpaque);
 
-	int pos = f->Seek(file_ofs);
+	const auto pos = f->Seek(file_ofs);
-	if (pos != file_ofs)
+	if (pos >= 0 && static_cast<uint64_t>(pos) != file_ofs)
 	{
 		return 0;
 	}
@@ -305,9 +305,9 @@ static RString ExtractDirectory( RString sPath )
 	return sPath;
 }
 
+#if defined(UNIX) || defined(MACOSX)
 static RString ReadlinkRecursive( RString sPath )
 {
-#if defined(UNIX) || defined(MACOSX)
 	// unices support symbolic links; dereference them
 	RString dereferenced = sPath;
 	do
@@ -325,10 +325,10 @@ static RString ReadlinkRecursive( RString sPath )
 			}
 		}
 	} while (sPath != dereferenced);
-#endif
 
 	return sPath;
 }
+#endif
 
 static RString GetDirOfExecutable( RString argv0 )
 {

src/RageMath.cpp

@@ -616,8 +616,8 @@ float RageFastSin(float angle)
 {
 	if(angle == 0) { return 0; }
 	float index= angle * sine_table_index_mult;
-	int first_index= static_cast<int>(index);
+	auto first_index= static_cast<uint32_t>(index);
-	int second_index= (first_index + 1) % sine_index_mod;
+	auto second_index= (first_index + 1) % sine_index_mod;
 	float remainder= index - first_index;
 	first_index%= sine_index_mod;
 	float first= 0.0f;

src/RageModelGeometry.cpp

@@ -239,7 +239,7 @@ void RageModelGeometry::LoadMilkshapeAscii( const RString& _sPath, bool bNeedsNo
 
 					uint16_t nIndices[3];
 					uint16_t nNormalIndices[3];
-					if( sscanf (sLine, "%d %hd %hd %hd %hd %hd %hd %d",
+					if( sscanf (sLine, "%d %hu %hu %hu %hu %hu %hu %d",
 								&nFlags,
 								&nIndices[0], &nIndices[1], &nIndices[2],
 								&nNormalIndices[0], &nNormalIndices[1], &nNormalIndices[2],

src/RageSound.cpp

@@ -271,7 +271,7 @@ int RageSound::GetDataToPlay( float *pBuffer, int iFrames, int64_t &iStreamFrame
 	/* We only update m_iStreamFrame; only take a shared lock, so we don't block the main thread. */
 //	LockMut(m_Mutex);
 
-	ASSERT_M( m_bPlaying, ssprintf("%p", this) );
+	ASSERT_M( m_bPlaying, ssprintf("%p", static_cast<void*>(this)) );
 	ASSERT( m_pSource != nullptr );
 
 	iFramesStored = 0;

src/RageSoundPosMap.cpp

@@ -176,20 +176,15 @@ int64_t pos_map_queue::Search( int64_t iSourceFrame, bool *bApproximate ) const
 	 *    SoundStopped has been called.
 	 * 3. Underflow; we'll be given a larger frame number than we know about.
 	 */
-#if defined(WIN32)
-#define I64F "%I64i"
-#elif defined(__x86_64__)
-#define I64F "%li"
-#else
-#define I64F "%lli"
-#endif
 	static RageTimer last;
 	if( last.PeekDeltaTime() >= 1.0f )
 	{
 		last.GetDeltaTime();
-		LOG->Trace( "Approximate sound time: driver frame " I64F ", m_pImpl->m_Queue frame " I64F ".." I64F " (dist " I64F "), closest position is " I64F,
+		std::stringstream ss;
-			iSourceFrame, pClosestBlock->m_iDestFrame, pClosestBlock->m_iDestFrame+pClosestBlock->m_iFrames,
+		ss << "Approximate sound time: driver frame " << iSourceFrame << ", m_pImpl->m_Queue frame "
-			iClosestPositionDist, iClosestPosition );
+		   << pClosestBlock->m_iDestFrame << ".." << (pClosestBlock->m_iDestFrame+pClosestBlock->m_iFrames)
+		   << " (dist " << iClosestPositionDist << "), closest position is " << iClosestPosition;
+		LOG->Trace( "%s", ss.str().c_str() );
 	}
 
 	if( bApproximate )

src/RageSoundReader_MP3.cpp

@@ -45,9 +45,9 @@ static unsigned long id3_parse_uint( const unsigned char **ptr, unsigned int byt
 
 	switch (bytes)
 	{
-	case 4: value = (value << 8) | *(*ptr)++;
+	case 4: value = (value << 8) | *(*ptr)++; [[fallthrough]];
-	case 3: value = (value << 8) | *(*ptr)++;
+	case 3: value = (value << 8) | *(*ptr)++; [[fallthrough]];
-	case 2: value = (value << 8) | *(*ptr)++;
+	case 2: value = (value << 8) | *(*ptr)++; [[fallthrough]];
 	case 1: value = (value << 8) | *(*ptr)++;
 	}
 
@@ -63,7 +63,7 @@ static unsigned long id3_parse_syncsafe( const unsigned char **ptr, unsigned int
 	switch (bytes)
 	{
 	case 5:
-		value = (value << 4) | (*(*ptr)++ & 0x0f);
+		value = (value << 4) | (*(*ptr)++ & 0x0f); [[fallthrough]];
 	case 4:
 		value = (value << 7) | (*(*ptr)++ & 0x7f);
 		value = (value << 7) | (*(*ptr)++ & 0x7f);

src/RageSoundReader_Merge.cpp

@@ -253,13 +253,6 @@ int RageSoundReader_Merge::Read( float *pBuffer, int iFrames )
 			}
 
 			int iGotFrames = pSound->Read( Buffer, iFrames - iFramesRead );
-			if( 0 && /*i == 1 && */iGotFrames > 0 )
-			{
-				int iAt = aNextSourceFrames[i] + lrintf(iGotFrames * aRatios[i]);
-				if( iAt != m_aSounds[i]->GetNextSourceFrame() )
-					LOG->Trace( "%i: at %i, expected %i",
-					i, iAt, m_aSounds[i]->GetNextSourceFrame() );
-			}
 			aNextSourceFrames[i] = m_aSounds[i]->GetNextSourceFrame();
 			aRatios[i] = m_aSounds[i]->GetStreamToSourceRatio();
 //	LOG->Trace( "read %i from %i; %i -> %i", iGotFrames, i, oldf, aNextSourceFrames[i] );

src/RageSoundReader_Resample_Good.cpp

@@ -120,8 +120,6 @@ namespace
 			i2 = i1;
 			i1 = iRem;
 		}
-
-		return i1;
 	}
 }
 

src/RageSoundReader_Vorbisfile.cpp

@@ -158,7 +158,7 @@ int RageSoundReader_Vorbisfile::Read( float *buf, int iFrames )
 				/* The timestamps moved backwards.  Ignore it.  This file probably
 				 * won't sync correctly. */
 				LOG->Trace( "p ahead %p %i < %i, we're ahead by %i", 
-					this, curofs, read_offset, read_offset-curofs );
+					static_cast<void*>(this), curofs, read_offset, read_offset-curofs );
 				read_offset = curofs;
 			}
 			else if( curofs > read_offset )

src/RageSurface.cpp

@@ -41,21 +41,19 @@ RageSurfaceFormat::RageSurfaceFormat():
 	Rmask(Mask[0]), Gmask(Mask[1]), Bmask(Mask[2]), Amask(Mask[3]),
 	Rshift(Shift[0]), Gshift(Shift[1]), Bshift(Shift[2]), Ashift(Shift[3])
 {
-	palette = nullptr;	
 }
 
 RageSurfaceFormat::RageSurfaceFormat( const RageSurfaceFormat &cpy ):
 	Rmask(Mask[0]), Gmask(Mask[1]), Bmask(Mask[2]), Amask(Mask[3]),
 	Rshift(Shift[0]), Gshift(Shift[1]), Bshift(Shift[2]), Ashift(Shift[3])
 {
-	memcpy( this, &cpy, sizeof(RageSurfaceFormat) );
+	BytesPerPixel = cpy.BytesPerPixel;
+	BitsPerPixel = cpy.BitsPerPixel;
+	Mask = cpy.Mask;
+	Shift = cpy.Shift;
+	Loss = cpy.Loss;
 	if( palette )
-		palette = new RageSurfacePalette( *palette );
+		palette = std::make_unique<RageSurfacePalette>(*palette);
-}
-
-RageSurfaceFormat::~RageSurfaceFormat()
-{
-	delete palette;
 }
 
 void RageSurfaceFormat::GetRGB( uint32_t val, uint8_t *r, uint8_t *g, uint8_t *b ) const
@@ -98,7 +96,7 @@ bool RageSurfaceFormat::operator== ( const RageSurfaceFormat &rhs ) const
 		return false;
 
 	if( BytesPerPixel == 1 )
-		if( memcmp( palette, rhs.palette, sizeof(RageSurfaceFormat) ) )
+		if( memcmp( palette.get(), rhs.palette.get(), sizeof(RageSurfaceFormat) ) )
 			return false;
 
 	return true;
@@ -191,7 +189,7 @@ void SetupFormat( RageSurfaceFormat &fmt,
 		// Loss for paletted textures is zero; the actual palette entries are 8-bit.
 		ZERO( fmt.Loss );
 
-		fmt.palette = new RageSurfacePalette;
+		fmt.palette = std::make_unique<RageSurfacePalette>();
 		fmt.palette->ncolors = 256;
 	}
 	else

src/RageSurface.h

@@ -3,6 +3,9 @@
 #ifndef RAGE_SURFACE_H
 #define RAGE_SURFACE_H
 
+#include <array>
+#include <memory>
+
 /* XXX remove? */
 struct RageSurfaceColor 
 {
@@ -40,16 +43,16 @@ struct RageSurfaceFormat
 {
 	RageSurfaceFormat();
 	RageSurfaceFormat( const RageSurfaceFormat &cpy );
-	~RageSurfaceFormat();
+	~RageSurfaceFormat() = default;
 
 	int32_t BytesPerPixel;
 	int32_t BitsPerPixel;
-	uint32_t Mask[4];
+	std::array<uint32_t, 4> Mask;
-	uint32_t Shift[4];
+	std::array<uint32_t, 4> Shift;
-	uint8_t Loss[4];
+	std::array<uint32_t, 4> Loss;
 	uint32_t &Rmask, &Gmask, &Bmask, &Amask; /* deprecated */
 	uint32_t &Rshift, &Gshift, &Bshift, &Ashift; /* deprecated */
-	RageSurfacePalette *palette;
+	std::unique_ptr<RageSurfacePalette> palette;
 
 	void GetRGB( uint32_t val, uint8_t *r, uint8_t *g, uint8_t *b ) const;
 

src/RageSurfaceUtils.cpp

@@ -12,7 +12,7 @@ uint32_t RageSurfaceUtils::decodepixel( const uint8_t *p, int bpp )
 	case 1: return *p;
 	case 2: return *(uint16_t *)p;
 	case 3:
-		if( BYTE_ORDER == BIG_ENDIAN )
+		if constexpr ( Endian::big )
 			return p[0] << 16 | p[1] << 8 | p[2];
 		else
 			return p[0] | p[1] << 8 | p[2] << 16;
@@ -29,7 +29,7 @@ void RageSurfaceUtils::encodepixel( uint8_t *p, int bpp, uint32_t pixel )
 	case 1: *p = uint8_t(pixel); break;
 	case 2: *(uint16_t *)p = uint16_t(pixel); break;
 	case 3:
-		if( BYTE_ORDER == BIG_ENDIAN )
+		if constexpr ( Endian::big )
 		{
 			p[0] = uint8_t((pixel >> 16) & 0xff);
 			p[1] = uint8_t((pixel >> 8) & 0xff);
@@ -518,10 +518,10 @@ static bool blit_rgba_to_rgba( const RageSurface *src_surf, const RageSurface *d
 	const int srcskip = src_surf->pitch - width*src_surf->format->BytesPerPixel;
 	const int dstskip = dst_surf->pitch - width*dst_surf->format->BytesPerPixel;
 
-	const uint32_t *src_shifts = src_surf->format->Shift;
+	const auto &src_shifts = src_surf->format->Shift;
-	const uint32_t *dst_shifts = dst_surf->format->Shift;
+	const auto &dst_shifts = dst_surf->format->Shift;
-	const uint32_t *src_masks = src_surf->format->Mask;
+	const auto &src_masks = src_surf->format->Mask;
-	const uint32_t *dst_masks = dst_surf->format->Mask;
+	const auto &dst_masks = dst_surf->format->Mask;
 
 	uint8_t lookup[4][256];
 	for( int c = 0; c < 4; ++c )
@@ -833,44 +833,38 @@ RageSurface *RageSurfaceUtils::LoadSurface( RString file )
  * two bits are the alpha component.
  *
  * This gives us a generic way to handle arbitrary 8-bit texture formats. */
-RageSurface *RageSurfaceUtils::PalettizeToGrayscale( const RageSurface *src_surf, int GrayBits, int AlphaBits )
+RageSurface *RageSurfaceUtils::PalettizeToGrayscale( const RageSurface *src_surf, uint32_t GrayBits, uint32_t AlphaBits )
 {
 	AlphaBits = std::min( AlphaBits, 8-src_surf->format->Loss[3] );
 
-	const int TotalBits = GrayBits + AlphaBits;
+	const auto TotalBits = GrayBits + AlphaBits;
 	ASSERT( TotalBits <= 8 );
 
 	RageSurface *dst_surf = CreateSurface(src_surf->w, src_surf->h,
 		8, 0,0,0,0 );
 
 	// Set up the palette.
-	const int TotalColors = 1 << TotalBits;
+	const auto TotalColors = 1u << TotalBits;
-	const int Ivalues = 1 << GrayBits;					// number of intensity values
+	const auto Ivalues = 1u << GrayBits;			// number of intensity values
-	const int Ishift = 0;								// intensity shift
+	const auto Ishift = 0u;					// intensity shift
-	const int Imask = ((1 << GrayBits) - 1) << Ishift;	// intensity mask
+	const auto Imask = ((1u << GrayBits) - 1u) << Ishift;	// intensity mask
-	const int Iloss = 8-GrayBits;
+	const auto Iloss = 8u-GrayBits;
 
-	const int Avalues = 1 << AlphaBits;					// number of alpha values
+	const auto Avalues = 1u << AlphaBits;			// number of alpha values
-	const int Ashift = GrayBits;						// alpha shift
+	const auto Ashift = GrayBits;				// alpha shift
-	const int Amask = ((1 << AlphaBits) - 1) << Ashift;	// alpha mask
+	const auto Amask = ((1u << AlphaBits) - 1u) << Ashift;	// alpha mask
-	const int Aloss = 8-AlphaBits;
+	const auto Aloss = 8u-AlphaBits;
 
-	for( int index = 0; index < TotalColors; ++index )
+	for( size_t index = 0; index < TotalColors; ++index )
 	{
-		const int I = (index & Imask) >> Ishift;
+		const auto I = (index & Imask) >> Ishift;
-		const int A = (index & Amask) >> Ashift;
+		const auto A = (index & Amask) >> Ashift;
 
-		int ScaledI;
+		// if only one intensity value, always fullbright
-		if( Ivalues == 1 )
+		const auto ScaledI = Ivalues == 1 ? 255 : clamp( lrintf(I * (255.0f / (Ivalues-1))), 0L, 255L );
-			ScaledI = 255; // if only one intensity value, always fullbright
-		else
-			ScaledI = clamp( lrintf(I * (255.0f / (Ivalues-1))), 0L, 255L );
 
-		int ScaledA;
+		// if only one alpha value, always opaque
-		if( Avalues == 1 )
+		const auto ScaledA = Avalues == 1 ? 255 : clamp( lrintf(A * (255.0f / (Avalues-1))), 0L, 255L );
-			ScaledA = 255; // if only one alpha value, always opaque
-		else
-			ScaledA = clamp( lrintf(A * (255.0f / (Avalues-1))), 0L, 255L );
 
 		RageSurfaceColor c;
 		c.r = uint8_t(ScaledI);

src/RageSurfaceUtils.h

@@ -55,7 +55,7 @@ namespace RageSurfaceUtils
 	RageSurface *LoadSurface( RString file );
 
 	/* Quickly palettize to an gray/alpha texture. */
-	RageSurface *PalettizeToGrayscale( const RageSurface *src_surf, int GrayBits, int AlphaBits );
+	RageSurface *PalettizeToGrayscale( const RageSurface *src_surf, uint32_t GrayBits, uint32_t AlphaBits );
 
 	RageSurface *MakeDummySurface( int height, int width );
 

src/RageSurfaceUtils_Palettize.cpp

@@ -156,7 +156,7 @@ void RageSurfaceUtils::Palettize( RageSurface *&pImg, int iColors, bool bDither
 
 	// Rescale the palette colors to a maxval of 255.
 	{
-		RageSurfacePalette *pal = pRet->format->palette;
+		auto& pal = pRet->format->palette;
 		for( int x = 0; x < pal->ncolors; ++x )
 		{
 			// This is really just PAM_DEPTH() broken out for the palette.

src/RageSurface_Load_GIF.cpp

@@ -136,8 +136,8 @@ RageSurfaceUtils::OpenResult RageSurface_Load_GIF( const RString &sPath, RageSur
 					imageCount, imageCount > 1 ? "s" : "");
 				return RageSurfaceUtils::OPEN_FATAL_ERROR;
 			}
+			[[fallthrough]];
 		}
-
 		case '!':
 		{
 			/* Extension */

src/RageSurface_Load_JPEG.cpp

@@ -27,10 +27,13 @@ struct my_jpeg_error_mgr
 {
   struct jpeg_error_mgr pub;    /* "public" fields */
 
+  uint8_t pad1[8];  // Explicitly add padding that's implicitly added by the compiler
+
   jmp_buf setjmp_buffer;        /* for return to caller */
   char errorbuf[JMSG_LENGTH_MAX];
-};
 
+  uint8_t pad2[8];  // Explicitly add padding that's implicitly added by the compiler
+};
 
 void my_output_message( j_common_ptr cinfo )
 {

src/RageSurface_Load_PNG.cpp

@@ -236,7 +236,7 @@ static RageSurface *RageSurface_Load_PNG( RageFile *f, const char *fn, char erro
 	ASSERT( img != nullptr );
 
 	row_pointers = new png_byte*[height];
-	CHECKPOINT_M( ssprintf("%p",row_pointers) );
+	CHECKPOINT_M( ssprintf("%p",static_cast<void*>(row_pointers)) );
 
 	for( unsigned y = 0; y < height; ++y )
 	{

src/RageSurface_Load_XPM.cpp

@@ -53,7 +53,7 @@ RageSurface *RageSurface_Load_XPM( char * const *xpm, RString &error )
 			continue;
 
 		RString clr = color.substr( color_length+4 );
-		int r, g, b;
+		unsigned int r, g, b;
 		if( sscanf( clr, "%2x%2x%2x", &r, &g, &b ) != 3 )
 			continue;
 		RageSurfaceColor colorval;

src/RageTextureManager.cpp

@@ -254,27 +254,8 @@ void RageTextureManager::DeleteTexture( RageTexture *t )
 		m_texture_ids_by_pointer.erase(id_entry);
 		return;
 	}
-	else
-	{
-		FAIL_M("Tried to delete a texture that wasn't in the ids by pointer list.");
-		for (std::map<RageTextureID, RageTexture *>::iterator iter = m_mapPathToTexture.begin(); iter != m_mapPathToTexture.end(); ++iter)
-		{
-			if( iter->second == t )
-			{
-				m_mapPathToTexture.erase( iter );	// remove map entry
-				SAFE_DELETE( t );	// free the texture
-				std::map<RageTextureID, RageTexture*>::iterator tex_update_entry=
-					m_textures_to_update.find(iter->first);
-				if(tex_update_entry != m_textures_to_update.end())
-				{
-					m_textures_to_update.erase(tex_update_entry);
-				}
-				return;
-			}
-		}
-	}
 
-	FAIL_M("Tried to delete a texture that wasn't loaded");
+	FAIL_M("Tried to delete a texture that wasn't in the ids by pointer list.");
 }
 
 void RageTextureManager::GarbageCollect( GCType type )

src/RageTypes.h

@@ -3,6 +3,8 @@
 #ifndef RAGETYPES_H
 #define RAGETYPES_H
 
+#include <array>
+
 #include "EnumHelper.h"
 
 enum BlendMode
@@ -101,7 +103,7 @@ struct lua_State;
 struct RageVector2
 {
 public:
-	RageVector2(): x(0), y(0) {}
+	RageVector2() = default;
 	RageVector2( const float * f ): x(f[0]), y(f[1]) {}
 	RageVector2( float x1, float y1 ): x(x1), y(y1) {}
 	
@@ -123,14 +125,14 @@ public:
 	
 	friend RageVector2 operator * ( float f, const RageVector2& other )	{ return other*f; }
 	
-	float x, y;
+	float x{0}, y{0};
 };
 
 
 struct RageVector3
 {
 public:
-	RageVector3(): x(0), y(0), z(0) {}
+	RageVector3() = default;
 	RageVector3( const float * f ):	x(f[0]), y(f[1]), z(f[2]) {}
 	RageVector3( float x1, float y1, float z1 ): x(x1), y(y1), z(z1) {}
 	
@@ -152,14 +154,14 @@ public:
 	
 	friend RageVector3 operator * ( float f, const RageVector3& other )	{ return other*f; }
 	
-	float x, y, z;
+	float x{0}, y{0}, z{0};
 };
 
 
 struct RageVector4
 {
 public:
-	RageVector4(): x(0), y(0), z(0), w(0) {}
+	RageVector4() = default;
 	RageVector4( const float * f ): x(f[0]), y(f[1]), z(f[2]), w(f[3]) {}
 	RageVector4( float x1, float y1, float z1, float w1 ): x(x1), y(y1), z(z1), w(w1) {}
 	
@@ -181,16 +183,24 @@ public:
 	
 	friend RageVector4 operator * ( float f, const RageVector4& other )	{ return other*f; }
 	
-	float x, y, z, w;
+	float x{0}, y{0}, z{0}, w{0};
 };
 
 struct RageColor
 {
 public:
-	RageColor(): r(0), g(0), b(0), a(0) {}
+	RageColor() = default;
 	explicit RageColor( const float * f ): r(f[0]), g(f[1]), b(f[2]), a(f[3]) {}
 	RageColor( float r1, float g1, float b1, float a1 ): r(r1), g(g1), b(b1), a(a1) {}
 
+	RageColor& operator=( const RageVector4& rv4 ) {
+		r = rv4.x;
+		g = rv4.y;
+		b = rv4.z;
+		a = rv4.w;
+		return *this;
+	}
+	
 	// casting
 	operator float* ()					{ return &r; };
 	operator const float* () const				{ return &r; };
@@ -228,7 +238,7 @@ public:
 		if( result == 4 )
 			return true;
 		
-		int ir=255, ib=255, ig=255, ia=255;
+		unsigned int ir=255, ib=255, ig=255, ia=255;
 		result = sscanf( str, "#%2x%2x%2x%2x", &ir, &ig, &ib, &ia );
 		if( result >= 3 )
 		{
@@ -251,7 +261,7 @@ public:
 	void FromStack( lua_State *L, int iPos );
 	void FromStackCompat( lua_State *L, int iPos );
 
-	float r, g, b, a;
+	float r{0}, g{0}, b{0}, a{0};
 };
 
 /* Convert floating-point 0..1 value to integer 0..255 value. *
@@ -310,9 +320,9 @@ inline unsigned char FTOC(float a)
 class RageVColor
 {
 public:
-	uint8_t b,g,r,a;	// specific ordering required by Direct3D
+	uint8_t b{0},g{0},r{0},a{0};	// specific ordering required by Direct3D
 
-	RageVColor(): b(0), g(0), r(0), a(0) { }
+	RageVColor() = default;
 	RageVColor(const RageColor &rc): b(0), g(0), r(0), a(0) { *this = rc; }
 	RageVColor &operator= (const RageColor &rc)
 	{
@@ -327,7 +337,7 @@ namespace StepMania
 	class Rect
 	{
 public:
-		Rect(): left(0), top(0), right(0), bottom(0) {}
+		Rect() = default;
 		Rect(T l, T t, T r, T b): left(l), top(t), right(r), bottom(b) {}
 		
 		T GetWidth() const	{ return right-left; };
@@ -347,7 +357,7 @@ public:
 		}
 		bool operator!=( const Rect &other ) const { return !operator==(other); }
 		
-		T left, top, right, bottom;
+		T left{}, top{}, right{}, bottom{};
 	};
 }
 typedef StepMania::Rect<int> RectI;
@@ -357,11 +367,11 @@ typedef StepMania::Rect<float> RectF;
  * have the same layout that D3D expects. */
 struct RageSpriteVertex	// has color
 {
-	RageSpriteVertex(): p(), n(), c(), t() {}
+	RageSpriteVertex() = default;
-	RageVector3 p; // position
+	RageVector3 p{}; // position
-	RageVector3 n; // normal
+	RageVector3 n{}; // normal
-	RageVColor  c; // diffuse color
+	RageVColor  c{}; // diffuse color
-	RageVector2 t; // texture coordinates
+	RageVector2 t{}; // texture coordinates
 };
 
 void lerp_rage_color(RageColor& out, RageColor const& a, RageColor const& b, float t);
@@ -369,19 +379,12 @@ void WeightedAvergeOfRSVs(RageSpriteVertex& average_out, RageSpriteVertex const&
 
 struct RageModelVertex	// doesn't have color.  Relies on material color
 {
-	/* Zero out by default. */
+	RageModelVertex() = default;
-	RageModelVertex():
+	RageVector3 p{};	// position
-		p(0,0,0),
+	RageVector3 n{};	// normal
-		n(0,0,0),
+	RageVector2 t{};	// texture coordinates
-		t(0,0),
+	int8_t      bone{0};
-		bone(0),
+	RageVector2 TextureMatrixScale{1,1}; // usually 1,1
-		TextureMatrixScale(1,1)
-		{ }
-	RageVector3 p;	// position
-	RageVector3 n;	// normal
-	RageVector2 t;	// texture coordinates
-	int8_t      bone;
-	RageVector2 TextureMatrixScale; // usually 1,1
 };
 
 
@@ -394,9 +397,8 @@ struct RageModelVertex	// doesn't have color.  Relies on material color
 struct RageMatrix
 {
 public:
-	RageMatrix() {};
+	RageMatrix() = default;
 	RageMatrix( const float *f )	{ for(int i=0; i<4; i++) for(int j=0; j<4; j++) m[j][i]=f[j*4+i]; }
-	RageMatrix( const RageMatrix& other )	{ for(int i=0; i<4; i++) for(int j=0; j<4; j++) m[j][i]=other.m[j][i]; }
 	RageMatrix( float v00, float v01, float v02, float v03,
                 float v10, float v11, float v12, float v13,
                 float v20, float v21, float v22, float v23,
@@ -407,12 +409,12 @@ public:
 	float  operator () ( int iRow, int iCol ) const { return m[iCol][iRow]; }
 
 	// casting operators
-	operator float* ()				{ return m[0]; }
+	operator float* ()				{ return m[0].data(); }
-	operator const float* () const			{ return m[0]; }
+	operator const float* () const			{ return m[0].data(); }
 
 	RageMatrix GetTranspose() const;
 
-	float m[4][4];
+	std::array<std::array<float, 4>, 4> m{};
 };
 
 #endif

src/RageUtil.cpp

@@ -3,6 +3,7 @@
 #include "RageMath.h"
 #include "RageLog.h"
 #include "RageFile.h"
+#include "RageFileDriverDirectHelpers.h"
 #include "RageSoundReader_FileReader.h"
 #include "LocalizedString.h"
 #include "LuaBinding.h"
@@ -1086,7 +1087,7 @@ bool GetCommandlineArgument( const RString &option, RString *argument, int iInde
 RString GetCwd()
 {
 	char buf[PATH_MAX];
-	bool ret = getcwd(buf, PATH_MAX) != nullptr;
+	bool ret = DoGetCwd(buf, PATH_MAX) != nullptr;
 	ASSERT(ret);
 	return buf;
 }
@@ -1980,7 +1981,7 @@ void ReplaceEntityText( RString &sText, const std::map<char, RString> &m )
 {
 	RString sFind;
 
-	for (std::pair<char, RString> const &c : m)
+	for (const auto &c : m)
 		sFind.append( 1, c.first );
 
 	RString sRet;
@@ -2058,11 +2059,8 @@ void Replace_Unicode_Markers( RString &sText )
 			continue;
 		p++;
 
-		int iNum;
+		unsigned int iNum;
-		if( bHex )
+		sscanf( sText.c_str()+iPos, bHex ? "&x%x;" : "&#%u;", &iNum );
-			sscanf( sText.c_str()+iPos, "&x%x;", &iNum );
-		else
-			sscanf( sText.c_str()+iPos, "&#%i;", &iNum );
 		if( iNum > 0xFFFF )
 			iNum = INVALID_CHAR;
 
@@ -2509,7 +2507,7 @@ int LuaFunc_JsonEncode(lua_State* L)
 					Json::Value array(Json::arrayValue);
 					array.resize(len);
 
-					for (int i = 0; i < len; i++)
+					for (unsigned int i = 0; i < len; i++)
 					{
 						lua_rawgeti(L, index, i + 1);
 						array[i] = convert(-1);
@@ -2615,7 +2613,7 @@ int LuaFunc_JsonDecode(lua_State* L)
 		else if (val.isArray())
 		{
 			lua_createtable(L, val.size(), 0);
-			for (int i = 0; i < val.size(); i++)
+			for (unsigned int i = 0; i < val.size(); i++)
 			{
 				convert(val[i]);
 				lua_rawseti(L, -2, i + 1);

src/RageUtil.h

@@ -3,6 +3,8 @@
 #ifndef RAGE_UTIL_H
 #define RAGE_UTIL_H
 
+#include <algorithm>
+#include <bit>
 #include <map>
 #include <random>
 #include <vector>
@@ -25,7 +27,7 @@ class RageFileDriver;
 extern const RString CUSTOM_SONG_PATH;
 
 /** @brief If outside the range from low to high, bring it within range. */
-#define clamp(val,low,high)		( std::max( (low), std::min((val),(high)) ) )
+#define clamp(val,low,high)	std::clamp( val, low, high )
 
 /**
  * @brief Scales x so that l1 corresponds to l2 and h1 corresponds to h2.
@@ -183,6 +185,21 @@ static inline T enum_cycle( T val, int iMax, int iAmt = 1 )
 	return static_cast<T>( iVal );
 }
 
+namespace Endian
+{
+	// When std::endian is supported by all desired compilers, we can eliminate the #ifdefs
+	// (At least) the current compiler used for the Ubuntu 20.04 build does not support this.
+#if defined(__cpp_lib_endian)
+	inline constexpr bool little = std::endian::native == std::endian::little;
+	inline constexpr bool big    = std::endian::native == std::endian::big;
+#elif defined(_WIN32)
+	inline constexpr bool little = false;
+	inline constexpr bool big    = true;
+#else
+	inline constexpr bool little = __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__;
+	inline constexpr bool big    = __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__;
+#endif
+}
 
 /* We only have unsigned swaps; byte swapping a signed value doesn't make sense.
  *
@@ -215,21 +232,12 @@ inline uint16_t Swap16( uint16_t n )
 }
 #endif
 
-#if defined(ENDIAN_LITTLE)
+inline uint32_t Swap32LE( uint32_t n ) { return Endian::little ? n : Swap32( n ); }
-inline uint32_t Swap32LE( uint32_t n ) { return n; }
+inline uint32_t Swap24LE( uint32_t n ) { return Endian::little ? n : Swap24( n ); }
-inline uint32_t Swap24LE( uint32_t n ) { return n; }
+inline uint16_t Swap16LE( uint16_t n ) { return Endian::little ? n : Swap16( n ); }
-inline uint16_t Swap16LE( uint16_t n ) { return n; }
+inline uint32_t Swap32BE( uint32_t n ) { return Endian::big    ? n : Swap32( n ); }
-inline uint32_t Swap32BE( uint32_t n ) { return Swap32( n ); }
+inline uint32_t Swap24BE( uint32_t n ) { return Endian::big    ? n : Swap24( n ); }
-inline uint32_t Swap24BE( uint32_t n ) { return Swap24( n ); }
+inline uint16_t Swap16BE( uint16_t n ) { return Endian::big    ? n : Swap16( n ); }
-inline uint16_t Swap16BE( uint16_t n ) { return Swap16( n ); }
-#else
-inline uint32_t Swap32BE( uint32_t n ) { return n; }
-inline uint32_t Swap24BE( uint32_t n ) { return n; }
-inline uint16_t Swap16BE( uint16_t n ) { return n; }
-inline uint32_t Swap32LE( uint32_t n ) { return Swap32( n ); }
-inline uint32_t Swap24LE( uint32_t n ) { return Swap24( n ); }
-inline uint16_t Swap16LE( uint16_t n ) { return Swap16( n ); }
-#endif
 
 class MersenneTwister : public std::mt19937
 {

src/RageUtil_AutoPtr.h

@@ -176,6 +176,8 @@ public:
 	}
 #endif
 
+	bool isNull() const { return !m_pPtr; }
+
 private:
 	T *m_pPtr;
 

src/RageUtil_BackgroundLoader.cpp

@@ -23,7 +23,7 @@ BackgroundLoader::BackgroundLoader():
 	if( !g_bEnableBackgroundLoading )
 		return;
 
-	m_sCachePathPrefix = ssprintf( "@mem/%p", this );
+	m_sCachePathPrefix = ssprintf( "@mem/%p", static_cast<void*>(this) );
 
 	m_bShutdownThread = false;
 	m_sThreadIsActive = m_sThreadShouldAbort = false;

src/RageUtil_CircularBuffer.h

@@ -131,7 +131,8 @@ public:
 
 	void clear()
 	{
-		read_pos = write_pos = 0;
+		read_pos = 0;
+		write_pos = 0;
 	}
 
 	/* Indicate that n elements have been written. */

src/ScoreDisplayRave.cpp

@@ -65,7 +65,7 @@ void ScoreDisplayRave::Update( float fDelta )
 		m_textLevel.SetText( ssprintf("%d",level+1) );
 	}
 
-	float fPercent = fLevel - level;
+	float fPercent = fLevel - Enum::to_integral(level);
 	m_sprMeter[level].SetCropRight( 1-fPercent );
 }
 

src/ScoreKeeperRave.cpp

@@ -116,7 +116,7 @@ void ScoreKeeperRave::AddSuperMeterDelta( float fUnscaledPercentChange )
 {
 	if( PREFSMAN->m_bMercifulDrain  &&  fUnscaledPercentChange<0 )
 	{
-		float fSuperPercentage = m_pPlayerState->m_fSuperMeter / NUM_ATTACK_LEVELS;
+		float fSuperPercentage = m_pPlayerState->m_fSuperMeter / Enum::to_integral(NUM_ATTACK_LEVELS);
 		fUnscaledPercentChange *= SCALE( fSuperPercentage, 0.f, 1.f, 0.5f, 1.f);
 	}
 

src/ScreenEdit.cpp

@@ -3238,6 +3238,7 @@ bool ScreenEdit::InputPlay( const InputEventPlus &input, EditButton EditB )
 				break;
 
 		// fall through to input handling logic:
+		[[fallthrough]];
 		case PLAYER_1:
 			{
 				switch( gbt )
@@ -5255,12 +5256,12 @@ void ScreenEdit::HandleAlterMenuChoice(AlterMenuChoice c, const std::vector<int>
 		case tempo:
 		{
 			// This affects all steps.
-			AlterType at = (AlterType)answers[c];
+			const auto tt = static_cast<TempoType>(answers[c]);
 			float fScale = -1;
 
-			switch( at )
+			switch( tt )
 			{
-					DEFAULT_FAIL( at );
+					DEFAULT_FAIL( tt );
 				case compress_2x:	fScale = 0.5f;		break;
 				case compress_3_2:	fScale = 2.0f/3;	break;
 				case compress_4_3:	fScale = 0.75f;		break;

src/ScreenGameplayLesson.cpp

@@ -113,7 +113,7 @@ void ScreenGameplayLesson::HandleScreenMessage( const ScreenMessage SM )
 				ResetAndRestartCurrentSong();
 
 				m_Try = (Try)(m_Try+1);
-				MESSAGEMAN->Broadcast( (MessageID)(Message_LessonTry1+m_Try) );
+				MESSAGEMAN->Broadcast( (MessageID)(Message_LessonTry1+Enum::to_integral(m_Try)) );
 			}
 			else
 			{
@@ -164,7 +164,7 @@ void ScreenGameplayLesson::ChangeLessonPage( int iDir )
 
 		ResetAndRestartCurrentSong();
 
-		MESSAGEMAN->Broadcast( (MessageID)(Message_LessonTry1+m_Try) );
+		MESSAGEMAN->Broadcast( (MessageID)(Message_LessonTry1+Enum::to_integral(m_Try)) );
 
 		// Change back to the current autoplay setting (in most cases, human controlled).
 		FOREACH_EnabledPlayerInfo( m_vPlayerInfo, pi )

src/ScreenOptions.cpp

@@ -1269,7 +1269,7 @@ bool ScreenOptions::MenuLeft( const InputEventPlus &input )
 		ChangeValueInRowRelative(m_iCurrentRow[input.pn],input.pn,-1, input.type != IET_FIRST_PRESS);
 
 	PlayerNumber pn = input.pn;
-	MESSAGEMAN->Broadcast( (MessageID)(Message_MenuLeftP1+pn) );
+	MESSAGEMAN->Broadcast( (MessageID)(Message_MenuLeftP1+Enum::to_integral(pn)) );
 	return true;
 }
 
@@ -1281,7 +1281,7 @@ bool ScreenOptions::MenuRight( const InputEventPlus &input )
 		ChangeValueInRowRelative(m_iCurrentRow[input.pn], input.pn,+1, input.type != IET_FIRST_PRESS);
 
 	PlayerNumber pn = input.pn;
-	MESSAGEMAN->Broadcast( (MessageID)(Message_MenuRightP1+pn) );
+	MESSAGEMAN->Broadcast( (MessageID)(Message_MenuRightP1+Enum::to_integral(pn)) );
 	return true;
 }
 
@@ -1289,7 +1289,7 @@ bool ScreenOptions::MenuUp( const InputEventPlus &input )
 {
 	MenuUpDown( input, -1 );
 	PlayerNumber pn = input.pn;
-	MESSAGEMAN->Broadcast( (MessageID)(Message_MenuUpP1+pn) );
+	MESSAGEMAN->Broadcast( (MessageID)(Message_MenuUpP1+Enum::to_integral(pn)) );
 	return true;
 }
 
@@ -1297,7 +1297,7 @@ bool ScreenOptions::MenuDown( const InputEventPlus &input )
 {
 	MenuUpDown( input, +1 );
 	PlayerNumber pn = input.pn;
-	MESSAGEMAN->Broadcast( (MessageID)(Message_MenuDownP1+pn) );
+	MESSAGEMAN->Broadcast( (MessageID)(Message_MenuDownP1+Enum::to_integral(pn)) );
 	return true;
 }
 

src/ScreenOptionsMasterPrefs.cpp

@@ -53,7 +53,17 @@ int FindClosestEntry( T value, const U *mapping, unsigned cnt )
 
 	for( unsigned i = 0; i < cnt; ++i )
 	{
-		const U val = mapping[i];
+		// Need to use if constexpr here so the compiler doesn't even
+		// attempt to parse the else branch for enums
+		const T val = [&]{
+				if constexpr (std::is_enum<U>::value) {
+					return Enum::to_integral(mapping[i]);
+				}
+				else {
+					return mapping[i];
+				}
+			}();
+
 		float dist = value < val? (float)(val-value):(float)(value-val);
 		if( have_best && best_dist < dist )
 			continue;
@@ -64,10 +74,7 @@ int FindClosestEntry( T value, const U *mapping, unsigned cnt )
 		iBestIndex = i;
 	}
 
-	if( have_best )
 	return iBestIndex;
-	else
-		return 0;
 }
 
 template <class T>
@@ -845,7 +852,7 @@ static void InitializeConfOptions()
 	ADD(ConfOption("CustomSongsMaxCount", CustomSongsCount, "10", "20", "30", "40", "50", "60", "70", "80", "90", "100", "1000"));
 	ADD(ConfOption("CustomSongsLoadTimeout", CustomSongsLoadTimeout, "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "20", "30", "1000"));
 	ADD(ConfOption("CustomSongsMaxSeconds", CustomSongsMaxSeconds, "60", "90", "120", "150", "180", "210", "240", "10000"));
-	ADD(ConfOption("CustomSongsMaxMegabytes", CustomSongsLoadTimeout, "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "20", "30", "1000"));
+	ADD(ConfOption("CustomSongsMaxMegabytes", CustomSongsMaxMegabytes, "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "20", "30", "1000"));
 
 	// Machine options
 	ADD( ConfOption( "MenuTimer",			MovePref<bool>,		"Off","On" ) );

src/ScreenSelectMaster.cpp

@@ -374,7 +374,7 @@ void ScreenSelectMaster::HandleScreenMessage( const ScreenMessage SM )
 
 	if( SM == SM_PlayPostSwitchPage )
 	{
-		int iNewChoice = m_iChoice[ GAMESTATE->GetMasterPlayerNumber() ];
+		const auto iNewChoice = m_iChoice[ GAMESTATE->GetMasterPlayerNumber() ];
 		Page newPage = GetPage( iNewChoice );
 
 		Message msg("PostSwitchPage");
@@ -390,7 +390,7 @@ void ScreenSelectMaster::HandleScreenMessage( const ScreenMessage SM )
 		{
 			for (PlayerNumber const &p : vpns)
 			{
-				int iChoice = m_iChoice[p];
+				const auto iChoice = m_iChoice[p];
 				m_vsprScroll[p][iChoice]->HandleMessage( msg );
 			}
 		}
@@ -460,7 +460,7 @@ void ScreenSelectMaster::UpdateSelectableChoices()
 
 		for ( PlayerNumber &p : vpns)
 		{
-			if(disabled && m_iChoice[p] == c)
+			if(disabled && m_iChoice[p] == static_cast<int32_t>(c))
 			{
 				on_unplayable[p]= true;
 			}
@@ -503,7 +503,7 @@ bool ScreenSelectMaster::Move( PlayerNumber pn, MenuDir dir )
 	if( !AnyOptionsArePlayable() )
 		return false;
 
-	int iSwitchToIndex = m_iChoice[pn];
+	auto iSwitchToIndex = m_iChoice[pn];
 	std::set<int> seen;
 
 	do
@@ -540,7 +540,7 @@ bool ScreenSelectMaster::MenuLeft( const InputEventPlus &input )
 	{
 		m_TrackingRepeatingInput = input.MenuI;
 		m_soundChange.Play(true);
-		MESSAGEMAN->Broadcast( (MessageID)(Message_MenuLeftP1+pn) );
+		MESSAGEMAN->Broadcast( (MessageID)(Message_MenuLeftP1+Enum::to_integral(pn)) );
 		MESSAGEMAN->Broadcast( (MessageID)(Message_MenuSelectionChanged) );
 
 		// if they use double select
@@ -571,7 +571,7 @@ bool ScreenSelectMaster::MenuRight( const InputEventPlus &input )
 	{
 		m_TrackingRepeatingInput = input.MenuI;
 		m_soundChange.Play(true);
-		MESSAGEMAN->Broadcast( (MessageID)(Message_MenuRightP1+pn) );
+		MESSAGEMAN->Broadcast( (MessageID)(Message_MenuRightP1+Enum::to_integral(pn)) );
 		MESSAGEMAN->Broadcast( (MessageID)(Message_MenuSelectionChanged) );
 
 		// if they use double select
@@ -602,7 +602,7 @@ bool ScreenSelectMaster::MenuUp( const InputEventPlus &input )
 	{
 		m_TrackingRepeatingInput = input.MenuI;
 		m_soundChange.Play(true);
-		MESSAGEMAN->Broadcast( (MessageID)(Message_MenuUpP1+pn) );
+		MESSAGEMAN->Broadcast( (MessageID)(Message_MenuUpP1+Enum::to_integral(pn)) );
 		MESSAGEMAN->Broadcast( (MessageID)(Message_MenuSelectionChanged) );
 
 		// if they use double select
@@ -633,7 +633,7 @@ bool ScreenSelectMaster::MenuDown( const InputEventPlus &input )
 	{
 		m_TrackingRepeatingInput = input.MenuI;
 		m_soundChange.Play(true);
-		MESSAGEMAN->Broadcast( (MessageID)(Message_MenuDownP1+pn) );
+		MESSAGEMAN->Broadcast( (MessageID)(Message_MenuDownP1+Enum::to_integral(pn)) );
 		MESSAGEMAN->Broadcast( (MessageID)(Message_MenuSelectionChanged) );
 
 		// if they use double select
@@ -963,7 +963,7 @@ bool ScreenSelectMaster::MenuStart( const InputEventPlus &input )
 		mc->ApplyToAllPlayers();
 		// We want to be able to broadcast a Start message to the theme, in
 		// case a themer wants to handle something. -aj
-		Message msg( MessageIDToString((MessageID)(Message_MenuStartP1+pn)) );
+		Message msg( MessageIDToString((MessageID)(Message_MenuStartP1+Enum::to_integral(pn))) );
 		msg.SetParam( "ScreenEmpty", true );
 		MESSAGEMAN->Broadcast( msg );
 		return true;
@@ -991,7 +991,7 @@ bool ScreenSelectMaster::MenuStart( const InputEventPlus &input )
 	if( bAllDone )
 	{
 		// broadcast MenuStart just like MenuLeft/Right/etc.
-		MESSAGEMAN->Broadcast( (MessageID)(Message_MenuStartP1+pn) );
+		MESSAGEMAN->Broadcast( (MessageID)(Message_MenuStartP1+Enum::to_integral(pn)) );
 		this->PostScreenMessage( SM_BeginFadingOut, fSecs );// tell our owner it's time to move on
 	}
 	return true;

src/ScreenSelectProfile.cpp

@@ -44,7 +44,7 @@ bool ScreenSelectProfile::MenuLeft( const InputEventPlus &input )
 			return false;
 	}
 	m_TrackingRepeatingInput = input.MenuI;
-	MESSAGEMAN->Broadcast( (MessageID)(Message_MenuLeftP1+pn) );
+	MESSAGEMAN->Broadcast( (MessageID)(Message_MenuLeftP1+Enum::to_integral(pn)) );
 	return true;
 }
 
@@ -65,7 +65,7 @@ bool ScreenSelectProfile::MenuRight( const InputEventPlus &input )
 			return false;
 	}
 	m_TrackingRepeatingInput = input.MenuI;
-	MESSAGEMAN->Broadcast( (MessageID)(Message_MenuRightP1+pn) );
+	MESSAGEMAN->Broadcast( (MessageID)(Message_MenuRightP1+Enum::to_integral(pn)) );
 	return true;
 }
 
@@ -86,7 +86,7 @@ bool ScreenSelectProfile::MenuUp( const InputEventPlus &input )
 			return false;
 	}
 	m_TrackingRepeatingInput = input.MenuI;
-	MESSAGEMAN->Broadcast( (MessageID)(Message_MenuUpP1+pn) );
+	MESSAGEMAN->Broadcast( (MessageID)(Message_MenuUpP1+Enum::to_integral(pn)) );
 	return true;
 }
 
@@ -107,7 +107,7 @@ bool ScreenSelectProfile::MenuDown( const InputEventPlus &input )
 			return false;
 	}
 	m_TrackingRepeatingInput = input.MenuI;
-	MESSAGEMAN->Broadcast( (MessageID)(Message_MenuDownP1+pn) );
+	MESSAGEMAN->Broadcast( (MessageID)(Message_MenuDownP1+Enum::to_integral(pn)) );
 	return true;
 }
 

src/ScreenTestSound.cpp

@@ -198,12 +198,13 @@ bool ScreenTestSound::Input( const InputEventPlus &input )
 				break;
 */
 			default:
-				return false;
+				break;
 		}
 	default:
-			return false;
+		break;
 	}
-	return true;
+
+	return false;
 }
 
 /*

src/SongManager.cpp

@@ -575,13 +575,8 @@ void SongManager::UnlistSong(Song *song)
 	// remove all occurences of the song in each of our song vectors
 	std::vector<Song*>* songVectors[3] = { &m_pSongs, &m_pPopularSongs, &m_pShuffledSongs };
 	for (int songVecIdx=0; songVecIdx<3; ++songVecIdx) {
-		std::vector<Song*>& v = *songVectors[songVecIdx];
+		auto& v = *songVectors[songVecIdx];
-		for (int i=0; i<v.size(); ++i) {
+		std::erase_if( v, [song](Song* vSong){return vSong == song;} );
-			if (v[i] == song) {
-				v.erase(v.begin()+i);
-				--i;
-			}
-		}
 	}
 }
 
@@ -1335,7 +1330,7 @@ void SongManager::GetExtraStageInfo( bool bExtra2, const Style *sd, Song*& pSong
 	}
 
 	ASSERT_M( sGroup != "", ssprintf("%p '%s' '%s'",
-		GAMESTATE->m_pCurSong.Get(),
+		static_cast<void*>(GAMESTATE->m_pCurSong.Get()),
 		GAMESTATE->m_pCurSong? GAMESTATE->m_pCurSong->GetSongDir().c_str():"",
 		GAMESTATE->m_pCurSong? GAMESTATE->m_pCurSong->m_sGroupName.c_str():"") );