Mgv5 1 up 1 down overgeneration for biome surface continuity

1 files changed, 18 insertions, 16 deletions

diff --git a/src/mapgen_v5.cpp b/src/mapgen_v5.cpp
index 4f66f943c..ebc5e5719 100644
--- a/src/mapgen_v5.cpp
+++ b/src/mapgen_v5.cpp
@@ -63,7 +63,7 @@ MapgenV5::MapgenV5(int mapgenid, MapgenParams *params, EmergeManager *emerge_) {
 	// amount of elements to skip for the next index
 	// for noise/height/biome maps (not vmanip)
 	this->ystride = csize.X;
-	this->zstride = csize.X * csize.Y;
+	this->zstride = csize.X * (csize.Y + 2);
 
 	this->biomemap  = new u8[csize.X * csize.Z];
 	this->heightmap = new s16[csize.X * csize.Z];
@@ -78,11 +78,11 @@ MapgenV5::MapgenV5(int mapgenid, MapgenParams *params, EmergeManager *emerge_) {
 	noise_height       = new Noise(&sp->np_height,       seed, csize.X, csize.Z);
 
 	// 3D terrain noise
-	noise_cave1        = new Noise(&sp->np_cave1,   seed, csize.X, csize.Y, csize.Z);
-	noise_cave2        = new Noise(&sp->np_cave2,   seed, csize.X, csize.Y, csize.Z);
-	noise_ground       = new Noise(&sp->np_ground,  seed, csize.X, csize.Y, csize.Z);
-	noise_crumble      = new Noise(&sp->np_crumble, seed, csize.X, csize.Y, csize.Z);
-	noise_wetness      = new Noise(&sp->np_wetness, seed, csize.X, csize.Y, csize.Z);
+	noise_cave1        = new Noise(&sp->np_cave1,   seed, csize.X, csize.Y + 2, csize.Z);
+	noise_cave2        = new Noise(&sp->np_cave2,   seed, csize.X, csize.Y + 2, csize.Z);
+	noise_ground       = new Noise(&sp->np_ground,  seed, csize.X, csize.Y + 2, csize.Z);
+	noise_crumble      = new Noise(&sp->np_crumble, seed, csize.X, csize.Y + 2, csize.Z);
+	noise_wetness      = new Noise(&sp->np_wetness, seed, csize.X, csize.Y + 2, csize.Z);
 
 	// Biome noise
 	noise_heat         = new Noise(bmgr->np_heat,     seed, csize.X, csize.Z);
@@ -291,8 +291,8 @@ void MapgenV5::makeChunk(BlockMakeData *data) {
 	
 	// Calculate lighting
 	if (flags & MG_LIGHT)
-		calcLighting(node_min - v3s16(1, 0, 1) * MAP_BLOCKSIZE,
-					 node_max + v3s16(1, 0, 1) * MAP_BLOCKSIZE);
+		calcLighting(node_min - v3s16(0, 1, 0) - v3s16(1, 0, 1) * MAP_BLOCKSIZE,
+			node_max + v3s16(0, 1, 0) + v3s16(1, 0, 1) * MAP_BLOCKSIZE);
 	
 	this->generating = false;
 }
@@ -301,7 +301,7 @@ void MapgenV5::makeChunk(BlockMakeData *data) {
 void MapgenV5::calculateNoise() {
 	//TimeTaker t("calculateNoise", NULL, PRECISION_MICRO);
 	int x = node_min.X;
-	int y = node_min.Y;
+	int y = node_min.Y - 1;
 	int z = node_min.Z;
 	
 	noise_filler_depth->perlinMap2D(x, z);
@@ -352,7 +352,7 @@ void MapgenV5::generateBaseTerrain() {
 	u32 index2d = 0;
 
 	for(s16 z=node_min.Z; z<=node_max.Z; z++) {
-		for(s16 y=node_min.Y; y<=node_max.Y; y++) {
+		for(s16 y=node_min.Y - 1; y<=node_max.Y + 1; y++) {
 			u32 i = vm->m_area.index(node_min.X, y, z);
 			for(s16 x=node_min.X; x<=node_max.X; x++, i++, index++, index2d++) {
 				if(vm->m_data[i].getContent() != CONTENT_IGNORE)
@@ -366,6 +366,7 @@ void MapgenV5::generateBaseTerrain() {
 				float h = water_level + noise_height->result[index2d];
 				float d1 = contour(noise_cave1->result[index]);
 				float d2 = contour(noise_cave2->result[index]);
+
 				if(noise_ground->result[index] * f < y - h) {
 					if(y <= water_level)
 						vm->m_data[i] = MapNode(c_water_source);
@@ -389,7 +390,7 @@ void MapgenV5::generateBlobs() {
 	u32 index = 0;
 
 	for(s16 z=node_min.Z; z<=node_max.Z; z++) {
-		for(s16 y=node_min.Y; y<=node_max.Y; y++) {
+		for(s16 y=node_min.Y - 1; y<=node_max.Y + 1; y++) {
 			u32 i = vm->m_area.index(node_min.X, y, z);
 			for(s16 x=node_min.X; x<=node_max.X; x++, i++, index++) {
 				content_t c = vm->m_data[i].getContent();
@@ -431,7 +432,7 @@ void MapgenV5::generateBiomes() {
 		Biome *biome  = (Biome *)bmgr->get(biomemap[index]);
 		s16 dfiller   = biome->depth_filler + noise_filler_depth->result[index];
 		s16 y0_top    = biome->depth_top;
-		s16 y0_filler = biome->depth_filler + biome->depth_top + dfiller;
+		s16 y0_filler = biome->depth_top + dfiller;
 		
 		s16 nplaced = 0;
 		u32 i = vm->m_area.index(x, node_max.Y, z);	
@@ -495,7 +496,7 @@ void MapgenV5::dustTopNodes() {
 		if (biome->c_dust == CONTENT_IGNORE)
 			continue;
 
-		s16 y = node_max.Y;
+		s16 y = node_max.Y + 1;
 		u32 vi = vm->m_area.index(x, y, z);
 		for (; y >= node_min.Y; y--) {
 			if (vm->m_data[vi].getContent() != CONTENT_AIR)
@@ -506,12 +507,13 @@ void MapgenV5::dustTopNodes() {
 			
 		content_t c = vm->m_data[vi].getContent();
 		if (c == biome->c_water && biome->c_dust_water != CONTENT_IGNORE) {
-			if (y < node_min.Y)
+			if (y < node_min.Y - 1)
 				continue;
 				
 			vm->m_data[vi] = MapNode(biome->c_dust_water);
-		} else if (!ndef->get(c).buildable_to && c != CONTENT_IGNORE) {
-			if (y == node_max.Y)
+		} else if (!ndef->get(c).buildable_to && c != CONTENT_IGNORE
+				&& c != biome->c_dust) {
+			if (y == node_max.Y + 1)
 				continue;
 				
 			vm->m_area.add_y(em, vi, 1);