5 files changed, 22 insertions, 10 deletions

diff --git a/src/Generating/Caves.cpp b/src/Generating/Caves.cpp
index 5cad11d2a..6df22a14a 100644
--- a/src/Generating/Caves.cpp
+++ b/src/Generating/Caves.cpp
@@ -239,9 +239,15 @@ void cCaveTunnel::Randomize(cNoise & a_Noise)
 
 bool cCaveTunnel::RefineDefPoints(const cCaveDefPoints & a_Src, cCaveDefPoints & a_Dst)
 {
+	if (a_Src.size() < 2)
+	{
+		// There are no midpoints, nothing to smooth
+		return true;
+	}
+
 	// Smoothing: for each line segment, add points on its 1/4 lengths
 	bool res = false;
-	int Num = a_Src.size() - 2;  // this many intermediary points
+	size_t Num = a_Src.size() - 2;  // this many intermediary points
 	a_Dst.clear();
 	a_Dst.reserve(Num * 2 + 2);
 	cCaveDefPoints::const_iterator itr = a_Src.begin() + 1;
@@ -251,7 +257,7 @@ bool cCaveTunnel::RefineDefPoints(const cCaveDefPoints & a_Src, cCaveDefPoints &
 	int PrevY = Source.m_BlockY;
 	int PrevZ = Source.m_BlockZ;
 	int PrevR = Source.m_Radius;
-	for (int i = 0; i <= Num; ++i, ++itr)
+	for (size_t i = 0; i <= Num; ++i, ++itr)
 	{
 		int dx = itr->m_BlockX - PrevX;
 		int dy = itr->m_BlockY - PrevY;
diff --git a/src/Generating/MineShafts.cpp b/src/Generating/MineShafts.cpp
index 231295c3f..af63e549b 100644
--- a/src/Generating/MineShafts.cpp
+++ b/src/Generating/MineShafts.cpp
@@ -543,7 +543,7 @@ cMineShaft * cMineShaftCorridor::CreateAndFit(
 {
 	cCuboid BoundingBox(a_PivotX, a_PivotY - 1, a_PivotZ);
 	BoundingBox.p2.y += 3;
-	int rnd = a_Noise.IntNoise3DInt(a_PivotX, a_PivotY + a_ParentSystem.m_MineShafts.size(), a_PivotZ) / 7;
+	int rnd = a_Noise.IntNoise3DInt(a_PivotX, a_PivotY + (int)a_ParentSystem.m_MineShafts.size(), a_PivotZ) / 7;
 	int NumSegments = 2 + (rnd) % (MAX_SEGMENTS - 1);  // 2 .. MAX_SEGMENTS
 	switch (a_Direction)
 	{
@@ -985,7 +985,7 @@ cMineShaft * cMineShaftCrossing::CreateAndFit(
 )
 {
 	cCuboid BoundingBox(a_PivotX, a_PivotY - 1, a_PivotZ);
-	int rnd = a_Noise.IntNoise3DInt(a_PivotX, a_PivotY + a_ParentSystem.m_MineShafts.size(), a_PivotZ) / 7;
+	int rnd = a_Noise.IntNoise3DInt(a_PivotX, a_PivotY + (int)a_ParentSystem.m_MineShafts.size(), a_PivotZ) / 7;
 	BoundingBox.p2.y += 3;
 	if ((rnd % 4) < 2)
 	{
@@ -1127,7 +1127,7 @@ cMineShaft * cMineShaftStaircase::CreateAndFit(
 	cNoise & a_Noise
 )
 {
-	int rnd = a_Noise.IntNoise3DInt(a_PivotX, a_PivotY + a_ParentSystem.m_MineShafts.size(), a_PivotZ) / 7;
+	int rnd = a_Noise.IntNoise3DInt(a_PivotX, a_PivotY + (int)a_ParentSystem.m_MineShafts.size(), a_PivotZ) / 7;
 	cCuboid Box;
 	switch (a_Direction)
 	{
diff --git a/src/Generating/PieceGenerator.cpp b/src/Generating/PieceGenerator.cpp
index db45cd08b..ce19c1c95 100644
--- a/src/Generating/PieceGenerator.cpp
+++ b/src/Generating/PieceGenerator.cpp
@@ -339,9 +339,9 @@ cPlacedPiece * cPieceGenerator::PlaceStartingPiece(int a_BlockX, int a_BlockY, i
 	int NumRotations = 1;
 	for (size_t i = 1; i < ARRAYCOUNT(Rotations); i++)
 	{
-		if (StartingPiece->CanRotateCCW(i))
+		if (StartingPiece->CanRotateCCW((int)i))
 		{
-			Rotations[NumRotations] = i;
+			Rotations[NumRotations] = (int)i;
 			NumRotations += 1;
 		}
 	}
diff --git a/src/Generating/Ravines.cpp b/src/Generating/Ravines.cpp
index 267dcbbf9..a036cf25f 100644
--- a/src/Generating/Ravines.cpp
+++ b/src/Generating/Ravines.cpp
@@ -306,8 +306,14 @@ void cStructGenRavines::cRavine::GenerateBaseDefPoints(int a_BlockX, int a_Block
 
 void cStructGenRavines::cRavine::RefineDefPoints(const cRavDefPoints & a_Src, cRavDefPoints & a_Dst)
 {
+	if (a_Src.size() < 2)
+	{
+		// No midpoints, nothing to refine
+		return;
+	}
+
 	// Smoothing: for each line segment, add points on its 1/4 lengths
-	int Num = a_Src.size() - 2;  // this many intermediary points
+	size_t Num = a_Src.size() - 2;  // this many intermediary points
 	a_Dst.clear();
 	a_Dst.reserve(Num * 2 + 2);
 	cRavDefPoints::const_iterator itr = a_Src.begin() + 1;
@@ -318,7 +324,7 @@ void cStructGenRavines::cRavine::RefineDefPoints(const cRavDefPoints & a_Src, cR
 	int PrevR = Source.m_Radius;
 	int PrevT = Source.m_Top;
 	int PrevB = Source.m_Bottom;
-	for (int i = 0; i <= Num; ++i, ++itr)
+	for (size_t i = 0; i <= Num; ++i, ++itr)
 	{
 		int dx = itr->m_BlockX - PrevX;
 		int dz = itr->m_BlockZ - PrevZ;
diff --git a/src/Generating/Trees.cpp b/src/Generating/Trees.cpp
index 4909587b1..4f1553c36 100644
--- a/src/Generating/Trees.cpp
+++ b/src/Generating/Trees.cpp
@@ -136,7 +136,7 @@ inline void PushSomeColumns(int a_BlockX, int a_Height, int a_BlockZ, int a_Colu
 	{
 		int x = a_BlockX + a_Coords[i].x;
 		int z = a_BlockZ + a_Coords[i].z;
-		if (a_Noise.IntNoise3DInt(x + 64 * a_Seq, a_Height + i, z + 64 * a_Seq) <= a_Chance)
+		if (a_Noise.IntNoise3DInt(x + 64 * a_Seq, a_Height + (int)i, z + 64 * a_Seq) <= a_Chance)
 		{
 			for (int j = 0; j < a_ColumnHeight; j++)
 			{