diff --git a/SpaceCadetPinball/SpaceCadetPinball.cpp b/SpaceCadetPinball/SpaceCadetPinball.cpp
index 71f57e5..e639ce8 100644
--- a/SpaceCadetPinball/SpaceCadetPinball.cpp
+++ b/SpaceCadetPinball/SpaceCadetPinball.cpp
@@ -27,7 +27,7 @@ int main(int argc, char* argv[])
 }
 
 #if _WIN32
-#include <Windows.h>
+#include <windows.h>
 
 // Windows subsystem main
 int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
diff --git a/SpaceCadetPinball/TBall.cpp b/SpaceCadetPinball/TBall.cpp
index 3d591b8..25dd48f 100644
--- a/SpaceCadetPinball/TBall.cpp
+++ b/SpaceCadetPinball/TBall.cpp
@@ -40,10 +40,10 @@ TBall::TBall(TPinballTable* table) : TPinballComponent(table, -1, false)
 
 	Offset = *loader::query_float_attribute(groupIndex, 0, 500);
 	auto visualCount = loader::query_visual_states(groupIndex);
+	auto index = 0;
 	if (visualCount > 0)
 	{
 		auto visualZPtr = VisualZArray;
-		int index = 0;
 		do
 		{
 			loader::query_visual(groupIndex, index, &visual);
diff --git a/SpaceCadetPinball/TEdgeSegment.cpp b/SpaceCadetPinball/TEdgeSegment.cpp
index 605ae10..53a7675 100644
--- a/SpaceCadetPinball/TEdgeSegment.cpp
+++ b/SpaceCadetPinball/TEdgeSegment.cpp
@@ -20,7 +20,7 @@ void TEdgeSegment::port_draw()
 TEdgeSegment* TEdgeSegment::install_wall(float* floatArr, TCollisionComponent* collComp, char* activeFlagPtr,
                                          unsigned int collisionGroup, float offset, size_t wallValue)
 {
-	vector_type center{}, start{}, end{}, vec1{}, vec2{}, dstVec{};
+	vector_type center{}, start{}, end{}, prevCenter{}, vec1{}, vec2{}, dstVec{};
 	TEdgeSegment* edge = nullptr;
 
 	wall_type wallType = static_cast<wall_type>(static_cast<int>(floor(*floatArr) - 1.0f));
@@ -31,14 +31,7 @@ TEdgeSegment* TEdgeSegment::install_wall(float* floatArr, TCollisionComponent* c
 			center.X = floatArr[1];
 			center.Y = floatArr[2];
 			auto radius = offset + floatArr[3];
-			TCircle* circle = nullptr;
-			try
-			{
-				circle = new TCircle(collComp, activeFlagPtr, collisionGroup, &center, radius);
-			}
-			catch (...)
-			{
-			}
+			auto circle = new TCircle(collComp, activeFlagPtr, collisionGroup, &center, radius);
 			edge = circle;
 
 			if (circle)
@@ -56,14 +49,7 @@ TEdgeSegment* TEdgeSegment::install_wall(float* floatArr, TCollisionComponent* c
 			start.Y = floatArr[2];
 			end.X = floatArr[3];
 			end.Y = floatArr[4];
-			TLine* line = nullptr;
-			try
-			{
-				line = new TLine(collComp, activeFlagPtr, collisionGroup, &start, &end);
-			}
-			catch (...)
-			{
-			}
+			auto line = new TLine(collComp, activeFlagPtr, collisionGroup, &start, &end);
 			edge = line;
 
 			if (line)
@@ -79,7 +65,6 @@ TEdgeSegment* TEdgeSegment::install_wall(float* floatArr, TCollisionComponent* c
 		{
 			int wallTypeI = static_cast<int>(wallType);
 			auto floatArrPtr = floatArr + 1;
-			vector_type prevCenter{};
 			prevCenter.X = floatArr[2 * wallTypeI - 1];
 			prevCenter.Y = floatArr[2 * wallTypeI];
 
@@ -112,14 +97,7 @@ TEdgeSegment* TEdgeSegment::install_wall(float* floatArr, TCollisionComponent* c
 						dstVec.Z < 0.0f && offset < 0.0f)
 					{
 						float radius = offset * 1.001f;
-						TCircle* circle = nullptr;
-						try
-						{
-							circle = new TCircle(collComp, activeFlagPtr, collisionGroup, &center, radius);
-						}
-						catch (...)
-						{
-						}
+						auto circle = new TCircle(collComp, activeFlagPtr, collisionGroup, &center, radius);
 
 						if (circle)
 						{
@@ -134,14 +112,7 @@ TEdgeSegment* TEdgeSegment::install_wall(float* floatArr, TCollisionComponent* c
 				start.Y = floatArrPtr[1];
 				end.X = floatArrPtr[2];
 				end.Y = floatArrPtr[3];
-				TLine* line = nullptr;
-				try
-				{
-					line = new TLine(collComp, activeFlagPtr, collisionGroup, &start, &end);
-				}
-				catch (...)
-				{
-				}
+				auto line = new TLine(collComp, activeFlagPtr, collisionGroup, &start, &end);
 				edge = line;
 
 				if (line)
diff --git a/SpaceCadetPinball/TFlagSpinner.cpp b/SpaceCadetPinball/TFlagSpinner.cpp
index 53c4f67..7286c1c 100644
--- a/SpaceCadetPinball/TFlagSpinner.cpp
+++ b/SpaceCadetPinball/TFlagSpinner.cpp
@@ -21,28 +21,14 @@ TFlagSpinner::TFlagSpinner(TPinballTable* table, int groupIndex) : TCollisionCom
 	end.Y = visual.FloatArr[1];
 	start.X = visual.FloatArr[2];
 	start.Y = visual.FloatArr[3];
-	TLine* line = nullptr;
-	try
-	{
-		line = new TLine(this, &ActiveFlag, visual.CollisionGroup, &start, &end);
-	}
-	catch (...)
-	{
-	}
+	auto line = new TLine(this, &ActiveFlag, visual.CollisionGroup, &start, &end);
 	if (line)
 	{
 		line->place_in_grid();
 		EdgeList.push_back(line);
 	}
 
-	line = nullptr;
-	try
-	{
-		line = new TLine(this, &ActiveFlag, visual.CollisionGroup, &end, &start);
-	}
-	catch (...)
-	{
-	}
+	line = new TLine(this, &ActiveFlag, visual.CollisionGroup, &end, &start);
 	PrevCollider = line;
 	if (line)
 	{
diff --git a/SpaceCadetPinball/TFlipper.cpp b/SpaceCadetPinball/TFlipper.cpp
index 54f4ebd..94999e5 100644
--- a/SpaceCadetPinball/TFlipper.cpp
+++ b/SpaceCadetPinball/TFlipper.cpp
@@ -34,26 +34,20 @@ TFlipper::TFlipper(TPinballTable* table, int groupIndex) : TCollisionComponent(t
 	auto vecT2 = reinterpret_cast<vector_type*>(loader::query_float_attribute(groupIndex, 0, 802));
 	auto vecT1 = reinterpret_cast<vector_type*>(loader::query_float_attribute(groupIndex, 0, 801));
 	auto origin = reinterpret_cast<vector_type*>(loader::query_float_attribute(groupIndex, 0, 800));
-	TFlipperEdge* flipperEdge = nullptr;
-	try
-	{
-		flipperEdge = new TFlipperEdge(
-			this,
-			&ActiveFlag,
-			visual.CollisionGroup,
-			table,
-			origin,
-			vecT1,
-			vecT2,
-			extendTime,
-			retractTime,
-			collMult,
-			Elasticity,
-			Smoothness);
-	}
-	catch (...)
-	{
-	}
+	auto flipperEdge = new TFlipperEdge(
+		this,
+		&ActiveFlag,
+		visual.CollisionGroup,
+		table,
+		origin,
+		vecT1,
+		vecT2,
+		extendTime,
+		retractTime,
+		collMult,
+		Elasticity,
+		Smoothness);
+
 	FlipperEdge = flipperEdge;
 	if (flipperEdge)
 	{
@@ -71,7 +65,7 @@ TFlipper::~TFlipper()
 
 int TFlipper::Message(int code, float value)
 {
-	if (code == 1 || code == 2 || (code > 1008 && code <= 1011) || code == 1022)
+	if (code == 1 || code == 2 || code > 1008 && code <= 1011 || code == 1022)
 	{
 		float timerTime;
 		int command = code;
diff --git a/SpaceCadetPinball/TFlipperEdge.cpp b/SpaceCadetPinball/TFlipperEdge.cpp
index 0a7562c..151dc50 100644
--- a/SpaceCadetPinball/TFlipperEdge.cpp
+++ b/SpaceCadetPinball/TFlipperEdge.cpp
@@ -109,6 +109,7 @@ float TFlipperEdge::FindCollisionDistance(ray_type* ray)
 	{
 		if (FlipperFlag == 0)
 		{
+			EdgeCollisionFlag = 0;
 			CollisionFlag1 = 0;
 			CollisionFlag2 = 0;
 			set_control_points(ogRay->TimeNow);
@@ -435,6 +436,7 @@ float TFlipperEdge::flipper_angle(float timeNow)
 
 int TFlipperEdge::is_ball_inside(float x, float y)
 {
+	vector_type testPoint{};
 	float dx = RotOrigin.X - x;
 	float dy = RotOrigin.Y - y;
 	if ((A2.X - A1.X) * (y - A1.Y) - (A2.Y - A1.Y) * (x - A1.X) >= 0.0f &&
@@ -445,7 +447,6 @@ int TFlipperEdge::is_ball_inside(float x, float y)
 		(T1.Y - y) * (T1.Y - y) + (T1.X - x) * (T1.X - x) < CircleT1RadiusSq)
 	{
 		float flipperLR = AngleMax < 0.0f ? -1.0f : 1.0f;
-		vector_type testPoint{};
 		if (FlipperFlag == 1)
 			testPoint = AngleMax < 0.0f ? B1 : B2;
 		else if (FlipperFlag == 2)
diff --git a/SpaceCadetPinball/THole.cpp b/SpaceCadetPinball/THole.cpp
index c0397a2..53bab24 100644
--- a/SpaceCadetPinball/THole.cpp
+++ b/SpaceCadetPinball/THole.cpp
@@ -30,16 +30,9 @@ THole::THole(TPinballTable* table, int groupIndex) : TCollisionComponent(table,
 	if (Circle.RadiusSq == 0.0f)
 		Circle.RadiusSq = 0.001f;
 
-	TCircle* tCircle = nullptr;
-	try
-	{
-		tCircle = new TCircle(this, &ActiveFlag, visual.CollisionGroup,
-							  reinterpret_cast<vector_type*>(visual.FloatArr),
-							  Circle.RadiusSq);
-	}
-	catch (...)
-	{
-	}
+	auto tCircle = new TCircle(this, &ActiveFlag, visual.CollisionGroup,
+	                           reinterpret_cast<vector_type*>(visual.FloatArr),
+	                           Circle.RadiusSq);
 	if (tCircle)
 	{
 		tCircle->place_in_grid();
diff --git a/SpaceCadetPinball/TKickout.cpp b/SpaceCadetPinball/TKickout.cpp
index 15a1b52..c4fcd6b 100644
--- a/SpaceCadetPinball/TKickout.cpp
+++ b/SpaceCadetPinball/TKickout.cpp
@@ -35,15 +35,8 @@ TKickout::TKickout(TPinballTable* table, int groupIndex, bool someFlag): TCollis
 	Circle.RadiusSq = *loader::query_float_attribute(groupIndex, 0, 306) * visual.FloatArr[2];
 	if (Circle.RadiusSq == 0.0f)
 		Circle.RadiusSq = 0.001f;
-	TCircle* tCircle = nullptr;
-	try
-	{
-		tCircle = new TCircle(this, &ActiveFlag, visual.CollisionGroup,
-							  reinterpret_cast<vector_type*>(visual.FloatArr), Circle.RadiusSq);
-	}
-	catch (...)
-	{
-	}
+	auto tCircle = new TCircle(this, &ActiveFlag, visual.CollisionGroup,
+	                           reinterpret_cast<vector_type*>(visual.FloatArr), Circle.RadiusSq);
 	if (tCircle)
 	{
 		tCircle->place_in_grid();
diff --git a/SpaceCadetPinball/TLightBargraph.cpp b/SpaceCadetPinball/TLightBargraph.cpp
index aef6fee..2551f0f 100644
--- a/SpaceCadetPinball/TLightBargraph.cpp
+++ b/SpaceCadetPinball/TLightBargraph.cpp
@@ -17,13 +17,7 @@ TLightBargraph::TLightBargraph(TPinballTable* table, int groupIndex) : TLightGro
 		if (floatArr)
 		{
 			auto count = 2 * List.size();
-			try
-			{
-				TimerTimeArray = new float[count];
-			}
-			catch (...)
-			{
-			}
+			TimerTimeArray = new float[count];
 			if (TimerTimeArray)
 			{
 				for (auto i = 0u; i < count; ++floatArr)
diff --git a/SpaceCadetPinball/TLightGroup.cpp b/SpaceCadetPinball/TLightGroup.cpp
index 616a906..2cc1dee 100644
--- a/SpaceCadetPinball/TLightGroup.cpp
+++ b/SpaceCadetPinball/TLightGroup.cpp
@@ -432,7 +432,7 @@ int TLightGroup::next_light_up()
 {
 	for (auto index = 0u; index < List.size(); ++index)
 	{
-		if (!List[index]->BmpIndex1)
+		if (!List.at(index)->BmpIndex1)
 			return static_cast<int>(index);
 	}
 	return -1;
diff --git a/SpaceCadetPinball/TOneway.cpp b/SpaceCadetPinball/TOneway.cpp
index 94e35f7..ca97678 100644
--- a/SpaceCadetPinball/TOneway.cpp
+++ b/SpaceCadetPinball/TOneway.cpp
@@ -20,14 +20,8 @@ TOneway::TOneway(TPinballTable* table, int groupIndex) : TCollisionComponent(tab
 		linePt2.Y = visual.FloatArr[1];
 		linePt1.X = visual.FloatArr[2];
 		linePt1.Y = visual.FloatArr[3];
-		TLine* line = nullptr;
-		try
-		{
-			line = new TLine(this, &ActiveFlag, visual.CollisionGroup, &linePt2, &linePt1);
-		}
-		catch (...)
-		{
-		}
+
+		auto line = new TLine(this, &ActiveFlag, visual.CollisionGroup, &linePt2, &linePt1);
 		if (line)
 		{
 			line->Offset(table->CollisionCompOffset);
@@ -35,14 +29,7 @@ TOneway::TOneway(TPinballTable* table, int groupIndex) : TCollisionComponent(tab
 			EdgeList.push_back(line);
 		}
 
-		line = nullptr;
-		try
-		{
-			line = new TLine(this, &ActiveFlag, visual.CollisionGroup, &linePt1, &linePt2);
-		}
-		catch (...)
-		{
-		}
+		line = new TLine(this, &ActiveFlag, visual.CollisionGroup, &linePt1, &linePt2);
 		Line = line;
 		if (line)
 		{
diff --git a/SpaceCadetPinball/TPinballTable.cpp b/SpaceCadetPinball/TPinballTable.cpp
index 2790015..62148f7 100644
--- a/SpaceCadetPinball/TPinballTable.cpp
+++ b/SpaceCadetPinball/TPinballTable.cpp
@@ -58,14 +58,7 @@ TPinballTable::TPinballTable(): TPinballComponent(nullptr, -1, false)
 	MultiballFlag = 0;
 	PlayerCount = 0;
 
-	TBall* ballObj = nullptr;
-	try
-	{
-		ballObj = new TBall(this);
-	}
-	catch (...)
-	{
-	}
+	auto ballObj = new TBall(this);
 	BallList.push_back(ballObj);
 	if (ballObj)
 		ballObj->ActiveFlag = 0;
@@ -375,7 +368,7 @@ int TPinballTable::Message(int code, float value)
 		LightGroup->Message(34, 0.0);
 		LightGroup->Message(20, 0.0);
 		Plunger->Message(1016, 0.0);
-		if (Demo && Demo->ActiveFlag)
+		if (Demo->ActiveFlag)
 			rc_text = pinball::get_rc_string(30, 0);
 		else
 			rc_text = pinball::get_rc_string(26, 0);
diff --git a/SpaceCadetPinball/TPlunger.cpp b/SpaceCadetPinball/TPlunger.cpp
index 7e373fa..dcbf324 100644
--- a/SpaceCadetPinball/TPlunger.cpp
+++ b/SpaceCadetPinball/TPlunger.cpp
@@ -37,7 +37,7 @@ void TPlunger::Collision(TBall* ball, vector_type* nextPosition, vector_type* di
 {
 	if (PinballTable->TiltLockFlag)
 		Message(1017, 0.0);
-	coef = RandFloat() * Boost * 0.1f + Boost; //!! passed in coef is never used
+	coef = RandFloat() * Boost * 0.1f + Boost;
 	maths::basic_collision(ball, nextPosition, direction, Elasticity, Smoothness, Threshold, coef);
 }
 
@@ -109,7 +109,7 @@ int TPlunger::Message(int code, float value)
 			if (PullbackTimer_)
 				timer::kill(PullbackTimer_);
 			PullbackTimer_ = 0;
-			if (code == 1005) //!!
+			if (code == 1005)
 				loader::play_sound(SoundIndexP2);
 			auto bmp = ListBitmap->at(0);
 			auto zMap = ListZMap->at(0);
diff --git a/SpaceCadetPinball/TRamp.cpp b/SpaceCadetPinball/TRamp.cpp
index 04eb76d..5b524ce 100644
--- a/SpaceCadetPinball/TRamp.cpp
+++ b/SpaceCadetPinball/TRamp.cpp
@@ -116,14 +116,7 @@ TRamp::TRamp(TPinballTable* table, int groupIndex) : TCollisionComponent(table,
 			}
 			if (collisionGroup)
 			{
-				TLine* line = nullptr;
-				try
-				{
-					line = new TLine(this, &ActiveFlag, collisionGroup, point1, point2);
-				}
-				catch (...)
-				{
-				}
+				auto line = new TLine(this, &ActiveFlag, collisionGroup, point1, point2);
 				EdgeList.push_back(line);
 				if (line)
 				{
diff --git a/SpaceCadetPinball/TRollover.cpp b/SpaceCadetPinball/TRollover.cpp
index 6146bc1..d11ad79 100644
--- a/SpaceCadetPinball/TRollover.cpp
+++ b/SpaceCadetPinball/TRollover.cpp
@@ -44,6 +44,7 @@ void TRollover::Collision(TBall* ball, vector_type* nextPosition, vector_type* d
 	ball->Position.Y = nextPosition->Y;
 	ball->RayMaxDistance -= coef;
 	ball->not_again(edge);
+	gdrv_bitmap8* bmp = nullptr;
 	if (!PinballTable->TiltLockFlag)
 	{
 		if (RolloverFlag)
@@ -59,7 +60,6 @@ void TRollover::Collision(TBall* ball, vector_type* nextPosition, vector_type* d
 		RolloverFlag = RolloverFlag == 0;
 		if (ListBitmap)
 		{
-			gdrv_bitmap8* bmp = nullptr;
 			if (!RolloverFlag)
 				bmp = ListBitmap->at(0);
 			render::sprite_set_bitmap(RenderSprite, bmp);
diff --git a/SpaceCadetPinball/TTableLayer.cpp b/SpaceCadetPinball/TTableLayer.cpp
index 2bc9d82..e45ba36 100644
--- a/SpaceCadetPinball/TTableLayer.cpp
+++ b/SpaceCadetPinball/TTableLayer.cpp
@@ -80,20 +80,13 @@ TTableLayer::TTableLayer(TPinballTable* table): TCollisionComponent(table, -1, f
 
 	for (auto visFloatArrCount = visual.FloatArrCount; visFloatArrCount > 0; visFloatArrCount--)
 	{
-		TLine* line = nullptr;
-		try
-		{
-			line = new TLine(this,
-							 &ActiveFlag,
-							 visual.CollisionGroup,
-							 visArrPtr[2],
-							 visArrPtr[3],
-							 visArrPtr[0],
-							 visArrPtr[1]);
-		}
-		catch (...)
-		{
-		}
+		auto line = new TLine(this,
+		                      &ActiveFlag,
+		                      visual.CollisionGroup,
+		                      visArrPtr[2],
+		                      visArrPtr[3],
+		                      visArrPtr[0],
+		                      visArrPtr[1]);
 		if (line)
 		{
 			line->place_in_grid();
diff --git a/SpaceCadetPinball/TTextBox.cpp b/SpaceCadetPinball/TTextBox.cpp
index 4d98b5f..5467555 100644
--- a/SpaceCadetPinball/TTextBox.cpp
+++ b/SpaceCadetPinball/TTextBox.cpp
@@ -123,14 +123,7 @@ void TTextBox::Display(const char* text, float time)
 		if (Timer == -1)
 			Clear();
 
-		TTextBoxMessage* message = nullptr;
-		try
-		{
-			message = new TTextBoxMessage(text, time);
-		}
-		catch (...)
-		{
-		}
+		auto message = new TTextBoxMessage(text, time);
 		if (message)
 		{
 			if (message->Text)
diff --git a/SpaceCadetPinball/TTextBoxMessage.cpp b/SpaceCadetPinball/TTextBoxMessage.cpp
index 5d5ecd0..97b4583 100644
--- a/SpaceCadetPinball/TTextBoxMessage.cpp
+++ b/SpaceCadetPinball/TTextBoxMessage.cpp
@@ -10,14 +10,7 @@ TTextBoxMessage::TTextBoxMessage(const char* text, float time)
 	if (text)
 	{
 		const auto textLen = strlen(text) + 1;
-		Text = nullptr;
-		try
-		{
-			Text = new char[textLen];
-		}
-		catch (...)
-		{
-		}
+		Text = new char[textLen];
 		if (Text)
 			strncpy(Text, text, textLen);
 	}
diff --git a/SpaceCadetPinball/TTripwire.cpp b/SpaceCadetPinball/TTripwire.cpp
index bc34094..46bdacc 100644
--- a/SpaceCadetPinball/TTripwire.cpp
+++ b/SpaceCadetPinball/TTripwire.cpp
@@ -6,7 +6,7 @@
 #include "TBall.h"
 #include "TPinballTable.h"
 
-TTripwire::TTripwire(TPinballTable* table, int groupIndex) : TRollover(table, groupIndex, true)
+TTripwire::TTripwire(TPinballTable* table, int groupIndex) : TRollover(table, groupIndex, 1)
 {
 }
 
diff --git a/SpaceCadetPinball/control.cpp b/SpaceCadetPinball/control.cpp
index 98684f2..5e401bb 100644
--- a/SpaceCadetPinball/control.cpp
+++ b/SpaceCadetPinball/control.cpp
@@ -1019,7 +1019,7 @@ void control::LaunchRampControl(int code, TPinballComponent* caller)
 			{
 				sound = control_soundwave21_tag.Component;
 			}
-			else if (someFlag <= 1 || someFlag > 3) //!! <1 ?
+			else if (someFlag <= 1 || someFlag > 3)
 			{
 				sound = control_soundwave24_tag.Component;
 			}
@@ -2148,7 +2148,7 @@ void control::HyperspaceKickOutControl(int code, TPinballComponent* caller)
 		}
 		else
 		{
-			if (someFlag <= 1 || someFlag > 3) //!! <1 ?
+			if (someFlag <= 1 || someFlag > 3)
 			{
 				auto duration = control_soundwave41_tag.Component->Play();
 				control_soundwave36_1_tag.Component->Play();
@@ -2919,7 +2919,7 @@ void control::GameoverController(int code, TPinballComponent* caller)
 
 	if (missionMsg & 0x200)
 	{
-		int highscoreId = missionMsg % 4; //!! %5 ?
+		int highscoreId = missionMsg % 4;
 		int highScore = pb::highscore_table[highscoreId].Score;
 		auto nextHidhscoreId = highscoreId + 1;
 		if (highScore > 0)
@@ -3923,7 +3923,9 @@ void control::SelectMissionController(int code, TPinballComponent* caller)
 			if (light_on(&control_lite319_tag))
 				control_lite319_tag.Component->Message(20, 0.0);
 			if (!light_on(&control_lite317_tag))
+			{
 				control_lite317_tag.Component->Message(7, 0.0);
+			}
 		}
 		else
 		{
@@ -4156,7 +4158,6 @@ void control::TimeWarpPartTwoController(int code, TPinballComponent* caller)
 	control_lite317_tag.Component->Message(20, 0.0);
 	control_lite198_tag.Component->MessageField = 1;
 	MissionControl(66, nullptr);
-	//!! Display score?
 }
 
 void control::UnselectMissionController(int code, TPinballComponent* caller)
diff --git a/SpaceCadetPinball/fullscrn.cpp b/SpaceCadetPinball/fullscrn.cpp
index f26d049..fa838c3 100644
--- a/SpaceCadetPinball/fullscrn.cpp
+++ b/SpaceCadetPinball/fullscrn.cpp
@@ -58,7 +58,7 @@ int fullscrn::enableFullscreen()
 	if (!display_changed)
 	{
 		SDL_SetWindowFullscreen(winmain::MainWindow, SDL_WINDOW_FULLSCREEN_DESKTOP);
-		display_changed = 1; //!!
+		display_changed = 1;
 		if (display_changed)
 			return 1;
 	}
diff --git a/SpaceCadetPinball/maths.cpp b/SpaceCadetPinball/maths.cpp
index 9a62fb2..7df44a4 100644
--- a/SpaceCadetPinball/maths.cpp
+++ b/SpaceCadetPinball/maths.cpp
@@ -206,6 +206,9 @@ void maths::line_init(line_type* line, float x0, float y0, float x1, float y1)
 
 float maths::ray_intersect_line(ray_type* ray, line_type* line)
 {
+	bool v5;
+	bool v6;
+
 	float perpDot = line->PerpendicularL.Y * ray->Direction.Y + ray->Direction.X * line->PerpendicularL.X;
 	if (perpDot < 0.0f)
 	{
@@ -221,8 +224,8 @@ float maths::ray_intersect_line(ray_type* ray, line_type* line)
 			{
 				if (v4 >= line->OriginX)
 				{
-					bool v5 = v4 < line->OriginY;
-					bool v6 = v4 == line->OriginY;
+					v5 = v4 < line->OriginY;
+					v6 = v4 == line->OriginY;
 					if (v5 || v6)
 						return result;
 					return 1000000000.0;
@@ -231,8 +234,8 @@ float maths::ray_intersect_line(ray_type* ray, line_type* line)
 			else if (line->OriginX <= line->RayIntersect.X)
 			{
 				float v7 = line->RayIntersect.X;
-				bool v5 = v7 < line->OriginY;
-				bool v6 = v7 == line->OriginY;
+				v5 = v7 < line->OriginY;
+				v6 = v7 == line->OriginY;
 				if (v5 || v6)
 					return result;
 				return 1000000000.0;
@@ -296,7 +299,7 @@ float maths::basic_collision(TBall* ball, vector_type* nextPosition, vector_type
 	return projSpeed;
 }
 
-float maths::Distance_Squared(vector_type& vec1, vector_type& vec2)
+float maths::Distance_Squared(vector_type vec1, vector_type vec2)
 {
 	return (vec1.Y - vec2.Y) * (vec1.Y - vec2.Y) + (vec1.X - vec2.X) * (vec1.X - vec2.X);
 }
diff --git a/SpaceCadetPinball/maths.h b/SpaceCadetPinball/maths.h
index 3e0d767..a975463 100644
--- a/SpaceCadetPinball/maths.h
+++ b/SpaceCadetPinball/maths.h
@@ -87,7 +87,7 @@ public:
 	static float basic_collision(TBall* ball, vector_type* nextPosition, vector_type* direction, float elasticity,
 	                             float smoothness,
 	                             float threshold, float boost);
-	static float Distance_Squared(vector_type& vec1, vector_type& vec2);
+	static float Distance_Squared(vector_type vec1, vector_type vec2);
 	static float DotProduct(vector_type* vec1, vector_type* vec2);
 	static void vswap(vector_type* vec1, vector_type* vec2);
 	static float Distance(vector_type* vec1, vector_type* vec2);
diff --git a/SpaceCadetPinball/midi.cpp b/SpaceCadetPinball/midi.cpp
index db428c0..68a19a1 100644
--- a/SpaceCadetPinball/midi.cpp
+++ b/SpaceCadetPinball/midi.cpp
@@ -318,5 +318,5 @@ std::vector<uint8_t>* midi::MdsToMidi(std::string file)
 	delete[] fileBuf;
 	if (returnCode && midiOut)
 		delete midiOut;
-	return midiOut; //!! could be already deleted
+	return midiOut;
 }
diff --git a/SpaceCadetPinball/partman.cpp b/SpaceCadetPinball/partman.cpp
index 04b06a9..5c89df9 100644
--- a/SpaceCadetPinball/partman.cpp
+++ b/SpaceCadetPinball/partman.cpp
@@ -27,12 +27,8 @@ DatFile* partman::load_records(LPCSTR lpFileName, bool fullTiltMode)
 		return nullptr;
 	}
 
-	DatFile* datFile;
-	try
-	{
-		datFile = new DatFile();
-	}
-	catch (...)
+	auto datFile = new DatFile();
+	if (!datFile)
 	{
 		fclose(fileHandle);
 		return nullptr;
@@ -43,12 +39,8 @@ DatFile* partman::load_records(LPCSTR lpFileName, bool fullTiltMode)
 
 	if (header.Unknown)
 	{
-		char* unknownBuf;
-		try
-		{
-			unknownBuf = new char[header.Unknown];
-		}
-		catch (...)
+		auto unknownBuf = new char[header.Unknown];
+		if (!unknownBuf)
 		{
 			fclose(fileHandle);
 			delete datFile;
@@ -115,18 +107,13 @@ DatFile* partman::load_records(LPCSTR lpFileName, bool fullTiltMode)
 			}
 			else
 			{
-				char* entryBuffer;
-				try
+				auto entryBuffer = new char[fieldSize];
+				entryData->Buffer = entryBuffer;
+				if (!entryBuffer)
 				{
-					entryBuffer = new char[fieldSize];
-				}
-				catch (...)
-				{
-					entryData->Buffer = nullptr;
 					abort = true;
 					break;
 				}
-				entryData->Buffer = entryBuffer;
 				fread(entryBuffer, 1, fieldSize, fileHandle);
 			}
 
diff --git a/SpaceCadetPinball/pb.cpp b/SpaceCadetPinball/pb.cpp
index 5c9c3db..95f45e5 100644
--- a/SpaceCadetPinball/pb.cpp
+++ b/SpaceCadetPinball/pb.cpp
@@ -29,8 +29,8 @@
 
 TPinballTable* pb::MainTable = nullptr;
 DatFile* pb::record_table = nullptr;
-int pb::time_ticks = 0, pb::demo_mode = 0, pb::game_mode = 2;
-float pb::mode_countdown_, pb::time_now = 0, pb::time_next = 0, pb::ball_speed_limit, pb::time_ticks_remainder = 0;
+int pb::time_ticks = 0, pb::demo_mode = 0, pb::game_mode = 2, pb::mode_countdown_;
+float pb::time_now = 0, pb::time_next = 0, pb::ball_speed_limit, pb::time_ticks_remainder = 0;
 high_score_struct pb::highscore_table[5];
 bool pb::FullTiltMode = false, pb::cheat_mode = false;
 
@@ -169,7 +169,7 @@ void pb::mode_change(int mode)
 	case 4:
 		winmain::LaunchBallEnabled = false;
 		winmain::HighScoresEnabled = false;
-		mode_countdown_ = 5000.f;
+		mode_countdown_ = 5000;
 		break;
 	}
 	game_mode = mode;
@@ -399,7 +399,7 @@ void pb::InputDown(GameInput input)
 
 	if (game_mode != 1)
 	{
-		mode_countdown(-1.f);
+		mode_countdown(-1);
 		return;
 	}
 
@@ -485,7 +485,7 @@ void pb::InputDown(GameInput input)
 	}
 }
 
-int pb::mode_countdown(float time)
+int pb::mode_countdown(int time)
 {
 	if (!game_mode || game_mode <= 0)
 		return 1;
@@ -494,13 +494,13 @@ int pb::mode_countdown(float time)
 		if (game_mode == 3)
 		{
 			mode_countdown_ -= time;
-			if (mode_countdown_ < 0.f || time < 0.f)
+			if (mode_countdown_ < 0 || time < 0)
 				mode_change(4);
 		}
 		else if (game_mode == 4)
 		{
 			mode_countdown_ -= time;
-			if (mode_countdown_ < 0.f || time < 0.f)
+			if (mode_countdown_ < 0 || time < 0)
 				mode_change(1);
 		}
 		return 1;
@@ -517,6 +517,7 @@ void pb::end_game()
 {
 	int scores[4]{};
 	int scoreIndex[4]{};
+	char String1[200];
 
 	mode_change(2);
 	int playerCount = MainTable->PlayerCount;
@@ -531,7 +532,7 @@ void pb::end_game()
 
 	for (auto i = 0; i < playerCount; ++i)
 	{
-		for (auto j = i+1; j < playerCount; ++j)
+		for (auto j = i; j < playerCount; ++j)
 		{
 			if (scores[j] > scores[i])
 			{
@@ -553,7 +554,6 @@ void pb::end_game()
 			int position = high_score::get_score_position(highscore_table, scores[i]);
 			if (position >= 0)
 			{
-				char String1[200];
 				strncpy(String1, pinball::get_rc_string(scoreIndex[i] + 26, 0), sizeof String1 - 1);
 				high_score::show_and_set_high_score_dialog(highscore_table, scores[i], position, String1);
 			}
@@ -593,6 +593,9 @@ bool pb::chk_highscore()
 
 float pb::collide(float timeNow, float timeDelta, TBall* ball)
 {
+	ray_type ray{};
+	vector_type positionMod{};
+
 	if (ball->ActiveFlag && !ball->CollisionComp)
 	{
 		if (ball_speed_limit < ball->Speed)
@@ -603,7 +606,6 @@ float pb::collide(float timeNow, float timeDelta, TBall* ball)
 		ball->RayMaxDistance = maxDistance;
 		ball->TimeNow = timeNow;
 
-		ray_type ray{};
 		ray.Origin.X = ball->Position.X;
 		ray.Origin.Y = ball->Position.Y;
 		ray.Origin.Z = ball->Position.Z;
@@ -623,7 +625,6 @@ float pb::collide(float timeNow, float timeDelta, TBall* ball)
 		{
 			maxDistance = timeDelta * ball->Speed;
 			ball->RayMaxDistance = maxDistance;
-			vector_type positionMod{};
 			positionMod.X = maxDistance * ball->Acceleration.X;
 			positionMod.Y = maxDistance * ball->Acceleration.Y;
 			positionMod.Z = 0.0;
diff --git a/SpaceCadetPinball/pb.h b/SpaceCadetPinball/pb.h
index e787dc4..0139db2 100644
--- a/SpaceCadetPinball/pb.h
+++ b/SpaceCadetPinball/pb.h
@@ -57,7 +57,7 @@ public:
 	static void loose_focus();
 	static void InputUp(GameInput input);
 	static void InputDown(GameInput input);
-	static int mode_countdown(float time);
+	static int mode_countdown(int time);
 	static void launch_ball();
 	static void end_game();
 	static void high_scores();
@@ -66,8 +66,7 @@ public:
 	static float collide(float timeNow, float timeDelta, TBall* ball);
 	static void PushCheat(const std::string& cheat);
 private:
-	static int demo_mode;
-	static float mode_countdown_;
+	static int demo_mode, mode_countdown_;
 
 	static bool AnyBindingMatchesInput(GameInput (&options)[3], GameInput key);
 };
diff --git a/SpaceCadetPinball/render.cpp b/SpaceCadetPinball/render.cpp
index e2e9b2c..30d6b35 100644
--- a/SpaceCadetPinball/render.cpp
+++ b/SpaceCadetPinball/render.cpp
@@ -142,15 +142,9 @@ void render::sprite_modified(render_sprite_type_struct* sprite)
 render_sprite_type_struct* render::create_sprite(VisualTypes visualType, gdrv_bitmap8* bmp, zmap_header_type* zMap,
                                                  int xPosition, int yPosition, rectangle_type* rect)
 {
-	render_sprite_type_struct* sprite;
-	try
-	{
-		sprite = new render_sprite_type_struct();
-	}
-	catch (...)
-	{
+	auto sprite = new render_sprite_type_struct();
+	if (!sprite)
 		return nullptr;
-	}
 	sprite->BmpRect.YPosition = yPosition;
 	sprite->BmpRect.XPosition = xPosition;
 	sprite->Bmp = bmp;
@@ -426,7 +420,7 @@ void render::build_occlude_list()
 				}
 			}
 
-			if (mainSprite->Bmp && spriteArr->size() < 2)
+			if (!mainSprite->UnknownFlag && mainSprite->Bmp && spriteArr->size() < 2)
 				spriteArr->clear();
 			if (!spriteArr->empty())
 			{
diff --git a/SpaceCadetPinball/score.cpp b/SpaceCadetPinball/score.cpp
index 8277b7c..243b56d 100644
--- a/SpaceCadetPinball/score.cpp
+++ b/SpaceCadetPinball/score.cpp
@@ -18,15 +18,9 @@ int score::init()
 
 scoreStruct* score::create(LPCSTR fieldName, gdrv_bitmap8* renderBgBmp)
 {
-	scoreStruct* score;
-	try
-	{
-		score = new scoreStruct();
-	}
-	catch (...)
-	{
+	auto score = new scoreStruct();
+	if (!score)
 		return nullptr;
-	}
 	score->Score = -9999;
 	score->BackgroundBmp = renderBgBmp;
 
diff --git a/SpaceCadetPinball/timer.cpp b/SpaceCadetPinball/timer.cpp
index dc4ae04..bfbd25c 100644
--- a/SpaceCadetPinball/timer.cpp
+++ b/SpaceCadetPinball/timer.cpp
@@ -12,17 +12,10 @@ timer_struct* timer::TimerBuffer;
 
 int timer::init(int count)
 {
-	timer_struct* buf;
-	try
-	{
-		buf = new timer_struct[count];
-	}
-	catch (...)
-	{
-		TimerBuffer = nullptr;
-		return 1;
-	}
+	auto buf = new timer_struct[count];
 	TimerBuffer = buf;
+	if (!buf)
+		return 1;
 	Count = 0;
 	MaxCount = count;
 	SetCount = 1;
diff --git a/SpaceCadetPinball/winmain.cpp b/SpaceCadetPinball/winmain.cpp
index bdcaa1b..cef4dbe 100644
--- a/SpaceCadetPinball/winmain.cpp
+++ b/SpaceCadetPinball/winmain.cpp
@@ -19,7 +19,7 @@ int winmain::bQuit = 0;
 int winmain::activated;
 int winmain::DispFrameRate = 0;
 int winmain::DispGRhistory = 0;
-int winmain::single_step = 0; //!! is constant
+int winmain::single_step = 0;
 int winmain::has_focus = 1;
 int winmain::last_mouse_x;
 int winmain::last_mouse_y;
@@ -180,7 +180,7 @@ int winmain::WinMain(LPCSTR lpCmdLine)
 			if (!gfr_display)
 			{
 				auto plt = static_cast<ColorRgba*>(malloc(1024u));
-				auto pltPtr = &plt[10]; // first 10 entries are system colors hardcoded in display_palette()
+				auto pltPtr = &plt[10];
 				for (int i1 = 0, i2 = 0; i1 < 256 - 10; ++i1, i2 += 8)
 				{
 					unsigned char blue = i2, redGreen = i2;
@@ -215,8 +215,8 @@ int winmain::WinMain(LPCSTR lpCmdLine)
 				int x, y, w, h;
 				SDL_GetMouseState(&x, &y);
 				SDL_GetWindowSize(window, &w, &h);
-				float dx = static_cast<float>(last_mouse_x - x) / static_cast<float>(w);
-				float dy = static_cast<float>(y - last_mouse_y) / static_cast<float>(h);
+				float dx = (last_mouse_x - x) / static_cast<float>(w);
+				float dy = (y - last_mouse_y) / static_cast<float>(h);
 				pb::ballset(dx, dy);
 
 				SDL_WarpMouseInWindow(window, last_mouse_x, last_mouse_y);