Weather: Snow starts forming when the top block is at the right height or higher

src/Chunk.cpp

@@ -874,17 +874,15 @@ void cChunk::ApplyWeatherToTop()
 	
 	int X = m_World->GetTickRandomNumber(15);
 	int Z = m_World->GetTickRandomNumber(15);
-	switch (GetBiomeAt(X, Z))
-	{
-		case biTaiga:
-		case biFrozenOcean:
-		case biFrozenRiver:
-		case biIcePlains:
-		case biIceMountains:
-		case biTaigaHills:
-		{
+
 	// TODO: Check light levels, don't snow over when the BlockLight is higher than (7?)
 	int Height = GetHeight(X, Z);
+
+	if (GetSnowStartHeight(GetBiomeAt(X, Z)) > Height)
+	{
+		return;
+	}
+
 	BLOCKTYPE TopBlock = GetBlock(X, Height, Z);
 	NIBBLETYPE TopMeta = GetMeta (X, Height, Z);
 	if (m_World->IsDeepSnowEnabled() && (TopBlock == E_BLOCK_SNOW))
@@ -941,13 +939,6 @@ void cChunk::ApplyWeatherToTop()
 	{
 		SetBlock(X, Height, Z, E_BLOCK_SNOW, 0);
 	}
-			break;
-		}  // case (snowy biomes)
-		default:
-		{
-			break;
-		}
-	}  // switch (biome)
 }