X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Fmapgen_flat.cpp;h=604c79dd0b59b78107500fef2c36d44dcefad872;hb=ff73c7a5da6ab8ac0bb678ebf25b83e805397029;hp=d654a772e25fa5334fee1c553c52d0147af06649;hpb=bb2ee54d3b841ebdb6c6a0b6573b64216ae0baae;p=dragonfireclient.git

diff --git a/src/mapgen_flat.cpp b/src/mapgen_flat.cpp
index d654a772e..604c79dd0 100644
--- a/src/mapgen_flat.cpp
+++ b/src/mapgen_flat.cpp
@@ -1,7 +1,7 @@
 /*
 Minetest
-Copyright (C) 2010-2015 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
-Copyright (C) 2010-2015 paramat, Matt Gregory
+Copyright (C) 2015-2017 paramat
+Copyright (C) 2015-2016 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
@@ -33,7 +33,6 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "emerge.h"
 #include "dungeongen.h"
 #include "cavegen.h"
-#include "treegen.h"
 #include "mg_biome.h"
 #include "mg_ore.h"
 #include "mg_decoration.h"
@@ -49,116 +48,62 @@ FlagDesc flagdesc_mapgen_flat[] = {
 ///////////////////////////////////////////////////////////////////////////////////////
 
 
-MapgenFlat::MapgenFlat(int mapgenid, MapgenParams *params, EmergeManager *emerge)
-	: Mapgen(mapgenid, params, emerge)
+MapgenFlat::MapgenFlat(int mapgenid, MapgenFlatParams *params, EmergeManager *emerge)
+	: MapgenBasic(mapgenid, params, emerge)
 {
-	this->m_emerge = emerge;
-	this->bmgr     = emerge->biomemgr;
-
-	//// 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 + 2);
-
-	this->biomemap        = new u8[csize.X * csize.Z];
-	this->heightmap       = new s16[csize.X * csize.Z];
-	this->heatmap         = NULL;
-	this->humidmap        = NULL;
-
-	MapgenFlatParams *sp = (MapgenFlatParams *)params->sparams;
-	this->spflags = sp->spflags;
-
-	this->ground_level = sp->ground_level;
-	this->large_cave_depth = sp->large_cave_depth;
-	this->lake_threshold = sp->lake_threshold;
-	this->lake_steepness = sp->lake_steepness;
-	this->hill_threshold = sp->hill_threshold;
-	this->hill_steepness = sp->hill_steepness;
-
-	//// 2D noise
-	noise_terrain      = new Noise(&sp->np_terrain,      seed, csize.X, csize.Z);
-	noise_filler_depth = new Noise(&sp->np_filler_depth, seed, csize.X, csize.Z);
-
-	//// 3D noise
-	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);
-
-	//// Biome noise
-	noise_heat           = new Noise(&params->np_biome_heat,           seed, csize.X, csize.Z);
-	noise_humidity       = new Noise(&params->np_biome_humidity,       seed, csize.X, csize.Z);
-	noise_heat_blend     = new Noise(&params->np_biome_heat_blend,     seed, csize.X, csize.Z);
-	noise_humidity_blend = new Noise(&params->np_biome_humidity_blend, seed, csize.X, csize.Z);
-
-	//// Resolve nodes to be used
-	INodeDefManager *ndef = emerge->ndef;
-
-	c_stone                = ndef->getId("mapgen_stone");
-	c_water_source         = ndef->getId("mapgen_water_source");
-	c_lava_source          = ndef->getId("mapgen_lava_source");
-	c_desert_stone         = ndef->getId("mapgen_desert_stone");
-	c_ice                  = ndef->getId("mapgen_ice");
-	c_sandstone            = ndef->getId("mapgen_sandstone");
-
-	c_cobble               = ndef->getId("mapgen_cobble");
-	c_stair_cobble         = ndef->getId("mapgen_stair_cobble");
-	c_mossycobble          = ndef->getId("mapgen_mossycobble");
-	c_sandstonebrick       = ndef->getId("mapgen_sandstonebrick");
-	c_stair_sandstonebrick = ndef->getId("mapgen_stair_sandstonebrick");
-
-	if (c_ice == CONTENT_IGNORE)
-		c_ice = CONTENT_AIR;
-	if (c_mossycobble == CONTENT_IGNORE)
-		c_mossycobble = c_cobble;
-	if (c_stair_cobble == CONTENT_IGNORE)
-		c_stair_cobble = c_cobble;
-	if (c_sandstonebrick == CONTENT_IGNORE)
-		c_sandstonebrick = c_sandstone;
-	if (c_stair_sandstonebrick == CONTENT_IGNORE)
-		c_stair_sandstonebrick = c_sandstone;
+	this->spflags          = params->spflags;
+	this->ground_level     = params->ground_level;
+	this->large_cave_depth = params->large_cave_depth;
+	this->cave_width       = params->cave_width;
+	this->lake_threshold   = params->lake_threshold;
+	this->lake_steepness   = params->lake_steepness;
+	this->hill_threshold   = params->hill_threshold;
+	this->hill_steepness   = params->hill_steepness;
+
+	// 2D noise
+	noise_filler_depth = new Noise(&params->np_filler_depth, seed, csize.X, csize.Z);
+
+	if ((spflags & MGFLAT_LAKES) || (spflags & MGFLAT_HILLS))
+		noise_terrain = new Noise(&params->np_terrain, seed, csize.X, csize.Z);
+	// 3D noise
+	MapgenBasic::np_cave1 = params->np_cave1;
+	MapgenBasic::np_cave2 = params->np_cave2;
 }
 
 
 MapgenFlat::~MapgenFlat()
 {
-	delete noise_terrain;
 	delete noise_filler_depth;
-	delete noise_cave1;
-	delete noise_cave2;
-
-	delete noise_heat;
-	delete noise_humidity;
-	delete noise_heat_blend;
-	delete noise_humidity_blend;
 
-	delete[] heightmap;
-	delete[] biomemap;
+	if ((spflags & MGFLAT_LAKES) || (spflags & MGFLAT_HILLS))
+		delete noise_terrain;
 }
 
 
 MapgenFlatParams::MapgenFlatParams()
 {
-	spflags = 0;
-
-	ground_level = 8;
+	spflags          = 0;
+	ground_level     = 8;
 	large_cave_depth = -33;
-	lake_threshold = -0.45;
-	lake_steepness = 48.0;
-	hill_threshold = 0.45;
-	hill_steepness = 64.0;
+	cave_width       = 0.09;
+	lake_threshold   = -0.45;
+	lake_steepness   = 48.0;
+	hill_threshold   = 0.45;
+	hill_steepness   = 64.0;
 
 	np_terrain      = NoiseParams(0, 1,   v3f(600, 600, 600), 7244,  5, 0.6, 2.0);
 	np_filler_depth = NoiseParams(0, 1.2, v3f(150, 150, 150), 261,   3, 0.7, 2.0);
-	np_cave1        = NoiseParams(0, 12,  v3f(96,  96,  96),  52534, 4, 0.5, 2.0);
-	np_cave2        = NoiseParams(0, 12,  v3f(96,  96,  96),  10325, 4, 0.5, 2.0);
+	np_cave1        = NoiseParams(0, 12,  v3f(61,  61,  61),  52534, 3, 0.5, 2.0);
+	np_cave2        = NoiseParams(0, 12,  v3f(67,  67,  67),  10325, 3, 0.5, 2.0);
 }
 
 
 void MapgenFlatParams::readParams(const Settings *settings)
 {
-	settings->getFlagStrNoEx("mgflat_spflags", spflags, flagdesc_mapgen_flat);
-
+	settings->getFlagStrNoEx("mgflat_spflags",      spflags, flagdesc_mapgen_flat);
 	settings->getS16NoEx("mgflat_ground_level",     ground_level);
 	settings->getS16NoEx("mgflat_large_cave_depth", large_cave_depth);
+	settings->getFloatNoEx("mgflat_cave_width",     cave_width);
 	settings->getFloatNoEx("mgflat_lake_threshold", lake_threshold);
 	settings->getFloatNoEx("mgflat_lake_steepness", lake_steepness);
 	settings->getFloatNoEx("mgflat_hill_threshold", hill_threshold);
@@ -173,10 +118,10 @@ void MapgenFlatParams::readParams(const Settings *settings)
 
 void MapgenFlatParams::writeParams(Settings *settings) const
 {
-	settings->setFlagStr("mgflat_spflags", spflags, flagdesc_mapgen_flat, U32_MAX);
-
+	settings->setFlagStr("mgflat_spflags",      spflags, flagdesc_mapgen_flat, U32_MAX);
 	settings->setS16("mgflat_ground_level",     ground_level);
 	settings->setS16("mgflat_large_cave_depth", large_cave_depth);
+	settings->setFloat("mgflat_cave_width",     cave_width);
 	settings->setFloat("mgflat_lake_threshold", lake_threshold);
 	settings->setFloat("mgflat_lake_steepness", lake_steepness);
 	settings->setFloat("mgflat_hill_threshold", hill_threshold);
@@ -195,7 +140,9 @@ void MapgenFlatParams::writeParams(Settings *settings) const
 int MapgenFlat::getSpawnLevelAtPoint(v2s16 p)
 {
 	s16 level_at_point = ground_level;
-	float n_terrain = NoisePerlin2D(&noise_terrain->np, p.X, p.Y, seed);
+	float n_terrain = 0.0f;
+	if ((spflags & MGFLAT_LAKES) || (spflags & MGFLAT_HILLS))
+		n_terrain = NoisePerlin2D(&noise_terrain->np, p.X, p.Y, seed);
 
 	if ((spflags & MGFLAT_LAKES) && n_terrain < lake_threshold) {
 		level_at_point = ground_level -
@@ -240,67 +187,21 @@ void MapgenFlat::makeChunk(BlockMakeData *data)
 
 	blockseed = getBlockSeed2(full_node_min, seed);
 
-	// Make some noise
-	calculateNoise();
-
 	// Generate base terrain, mountains, and ridges with initial heightmaps
 	s16 stone_surface_max_y = generateTerrain();
 
 	// Create heightmap
 	updateHeightmap(node_min, node_max);
 
-	// Create biomemap at heightmap surface
-	bmgr->calcBiomes(csize.X, csize.Z, noise_heat->result,
-		noise_humidity->result, heightmap, biomemap);
-
-	// Actually place the biome-specific nodes
-	MgStoneType stone_type = generateBiomes(noise_heat->result, noise_humidity->result);
+	// Init biome generator, place biome-specific nodes, and build biomemap
+	biomegen->calcBiomeNoise(node_min);
+	MgStoneType stone_type = generateBiomes();
 
 	if (flags & MG_CAVES)
-		generateCaves(stone_surface_max_y);
-
-	if ((flags & MG_DUNGEONS) && (stone_surface_max_y >= node_min.Y)) {
-		DungeonParams dp;
-
-		dp.np_rarity  = nparams_dungeon_rarity;
-		dp.np_density = nparams_dungeon_density;
-		dp.np_wetness = nparams_dungeon_wetness;
-		dp.c_water    = c_water_source;
-		if (stone_type == STONE) {
-			dp.c_cobble = c_cobble;
-			dp.c_moss   = c_mossycobble;
-			dp.c_stair  = c_stair_cobble;
-
-			dp.diagonal_dirs = false;
-			dp.mossratio     = 3.0;
-			dp.holesize      = v3s16(1, 2, 1);
-			dp.roomsize      = v3s16(0, 0, 0);
-			dp.notifytype    = GENNOTIFY_DUNGEON;
-		} else if (stone_type == DESERT_STONE) {
-			dp.c_cobble = c_desert_stone;
-			dp.c_moss   = c_desert_stone;
-			dp.c_stair  = c_desert_stone;
-
-			dp.diagonal_dirs = true;
-			dp.mossratio     = 0.0;
-			dp.holesize      = v3s16(2, 3, 2);
-			dp.roomsize      = v3s16(2, 5, 2);
-			dp.notifytype    = GENNOTIFY_TEMPLE;
-		} else if (stone_type == SANDSTONE) {
-			dp.c_cobble = c_sandstonebrick;
-			dp.c_moss   = c_sandstonebrick;
-			dp.c_stair  = c_sandstonebrick;
-
-			dp.diagonal_dirs = false;
-			dp.mossratio     = 0.0;
-			dp.holesize      = v3s16(2, 2, 2);
-			dp.roomsize      = v3s16(2, 0, 2);
-			dp.notifytype    = GENNOTIFY_DUNGEON;
-		}
+		generateCaves(stone_surface_max_y, large_cave_depth);
 
-		DungeonGen dgen(this, &dp);
-		dgen.generate(blockseed, full_node_min, full_node_max);
-	}
+	if (flags & MG_DUNGEONS)
+		generateDungeons(stone_surface_max_y, stone_type);
 
 	// Generate the registered decorations
 	if (flags & MG_DECORATIONS)
@@ -327,35 +228,6 @@ void MapgenFlat::makeChunk(BlockMakeData *data)
 }
 
 
-void MapgenFlat::calculateNoise()
-{
-	//TimeTaker t("calculateNoise", NULL, PRECISION_MICRO);
-	s16 x = node_min.X;
-	s16 z = node_min.Z;
-
-	if ((spflags & MGFLAT_LAKES) || (spflags & MGFLAT_HILLS))
-		noise_terrain->perlinMap2D(x, z);
-
-	// Cave noises are calculated in generateCaves()
-	// only if solid terrain is present in mapchunk
-
-	noise_filler_depth->perlinMap2D(x, z);
-	noise_heat->perlinMap2D(x, z);
-	noise_humidity->perlinMap2D(x, z);
-	noise_heat_blend->perlinMap2D(x, z);
-	noise_humidity_blend->perlinMap2D(x, z);
-
-	for (s32 i = 0; i < csize.X * csize.Z; i++) {
-		noise_heat->result[i] += noise_heat_blend->result[i];
-		noise_humidity->result[i] += noise_humidity_blend->result[i];
-	}
-
-	heatmap = noise_heat->result;
-	humidmap = noise_humidity->result;
-	//printf("calculateNoise: %dus\n", t.stop());
-}
-
-
 s16 MapgenFlat::generateTerrain()
 {
 	MapNode n_air(CONTENT_AIR);
@@ -366,13 +238,14 @@ s16 MapgenFlat::generateTerrain()
 	s16 stone_surface_max_y = -MAX_MAP_GENERATION_LIMIT;
 	u32 ni2d = 0;
 
+	bool use_noise = (spflags & MGFLAT_LAKES) || (spflags & MGFLAT_HILLS);
+	if (use_noise)
+		noise_terrain->perlinMap2D(node_min.X, node_min.Z);
+
 	for (s16 z = node_min.Z; z <= node_max.Z; z++)
 	for (s16 x = node_min.X; x <= node_max.X; x++, ni2d++) {
 		s16 stone_level = ground_level;
-		float n_terrain = 0.0f;
-
-		if ((spflags & MGFLAT_LAKES) || (spflags & MGFLAT_HILLS))
-			n_terrain = noise_terrain->result[ni2d];
+		float n_terrain = use_noise ? noise_terrain->result[ni2d] : 0.0f;
 
 		if ((spflags & MGFLAT_LAKES) && n_terrain < lake_threshold) {
 			s16 depress = (lake_threshold - n_terrain) * lake_steepness;
@@ -401,214 +274,3 @@ s16 MapgenFlat::generateTerrain()
 
 	return stone_surface_max_y;
 }
-
-
-MgStoneType MapgenFlat::generateBiomes(float *heat_map, float *humidity_map)
-{
-	v3s16 em = vm->m_area.getExtent();
-	u32 index = 0;
-	MgStoneType stone_type = STONE;
-
-	for (s16 z = node_min.Z; z <= node_max.Z; z++)
-	for (s16 x = node_min.X; x <= node_max.X; x++, index++) {
-		Biome *biome = NULL;
-		u16 depth_top = 0;
-		u16 base_filler = 0;
-		u16 depth_water_top = 0;
-		u32 vi = vm->m_area.index(x, node_max.Y, z);
-
-		// Check node at base of mapchunk above, either a node of a previously
-		// generated mapchunk or if not, a node of overgenerated base terrain.
-		content_t c_above = vm->m_data[vi + em.X].getContent();
-		bool air_above = c_above == CONTENT_AIR;
-		bool water_above = c_above == c_water_source;
-
-		// If there is air or water above enable top/filler placement, otherwise force
-		// nplaced to stone level by setting a number exceeding any possible filler depth.
-		u16 nplaced = (air_above || water_above) ? 0 : U16_MAX;
-
-
-		for (s16 y = node_max.Y; y >= node_min.Y; y--) {
-			content_t c = vm->m_data[vi].getContent();
-
-			// Biome is recalculated each time an upper surface is detected while
-			// working down a column. The selected biome then remains in effect for
-			// all nodes below until the next surface and biome recalculation.
-			// Biome is recalculated:
-			// 1. At the surface of stone below air or water.
-			// 2. At the surface of water below air.
-			// 3. When stone or water is detected but biome has not yet been calculated.
-			if ((c == c_stone && (air_above || water_above || !biome)) ||
-					(c == c_water_source && (air_above || !biome))) {
-				biome = bmgr->getBiome(heat_map[index], humidity_map[index], y);
-				depth_top = biome->depth_top;
-				base_filler = MYMAX(depth_top + biome->depth_filler
-					+ noise_filler_depth->result[index], 0);
-				depth_water_top = biome->depth_water_top;
-
-				// Detect stone type for dungeons during every biome calculation.
-				// This is more efficient than detecting per-node and will not
-				// miss any desert stone or sandstone biomes.
-				if (biome->c_stone == c_desert_stone)
-					stone_type = DESERT_STONE;
-				else if (biome->c_stone == c_sandstone)
-					stone_type = SANDSTONE;
-			}
-
-			if (c == c_stone) {
-				content_t c_below = vm->m_data[vi - em.X].getContent();
-
-				// If the node below isn't solid, make this node stone, so that
-				// any top/filler nodes above are structurally supported.
-				// This is done by aborting the cycle of top/filler placement
-				// immediately by forcing nplaced to stone level.
-				if (c_below == CONTENT_AIR || c_below == c_water_source)
-					nplaced = U16_MAX;
-
-				if (nplaced < depth_top) {
-					vm->m_data[vi] = MapNode(biome->c_top);
-					nplaced++;
-				} else if (nplaced < base_filler) {
-					vm->m_data[vi] = MapNode(biome->c_filler);
-					nplaced++;
-				} else {
-					vm->m_data[vi] = MapNode(biome->c_stone);
-				}
-
-				air_above = false;
-				water_above = false;
-			} else if (c == c_water_source) {
-				vm->m_data[vi] = MapNode((y > (s32)(water_level - depth_water_top)) ?
-						biome->c_water_top : biome->c_water);
-				nplaced = 0;  // Enable top/filler placement for next surface
-				air_above = false;
-				water_above = true;
-			} else if (c == CONTENT_AIR) {
-				nplaced = 0;  // Enable top/filler placement for next surface
-				air_above = true;
-				water_above = false;
-			} else {  // Possible various nodes overgenerated from neighbouring mapchunks
-				nplaced = U16_MAX;  // Disable top/filler placement
-				air_above = false;
-				water_above = false;
-			}
-
-			vm->m_area.add_y(em, vi, -1);
-		}
-	}
-
-	return stone_type;
-}
-
-
-void MapgenFlat::dustTopNodes()
-{
-	if (node_max.Y < water_level)
-		return;
-
-	v3s16 em = vm->m_area.getExtent();
-	u32 index = 0;
-
-	for (s16 z = node_min.Z; z <= node_max.Z; z++)
-	for (s16 x = node_min.X; x <= node_max.X; x++, index++) {
-		Biome *biome = (Biome *)bmgr->getRaw(biomemap[index]);
-
-		if (biome->c_dust == CONTENT_IGNORE)
-			continue;
-
-		u32 vi = vm->m_area.index(x, full_node_max.Y, z);
-		content_t c_full_max = vm->m_data[vi].getContent();
-		s16 y_start;
-
-		if (c_full_max == CONTENT_AIR) {
-			y_start = full_node_max.Y - 1;
-		} else if (c_full_max == CONTENT_IGNORE) {
-			vi = vm->m_area.index(x, node_max.Y + 1, z);
-			content_t c_max = vm->m_data[vi].getContent();
-
-			if (c_max == CONTENT_AIR)
-				y_start = node_max.Y;
-			else
-				continue;
-		} else {
-			continue;
-		}
-
-		vi = vm->m_area.index(x, y_start, z);
-		for (s16 y = y_start; y >= node_min.Y - 1; y--) {
-			if (vm->m_data[vi].getContent() != CONTENT_AIR)
-				break;
-
-			vm->m_area.add_y(em, vi, -1);
-		}
-
-		content_t c = vm->m_data[vi].getContent();
-		if (!ndef->get(c).buildable_to && c != CONTENT_IGNORE && c != biome->c_dust) {
-			vm->m_area.add_y(em, vi, 1);
-			vm->m_data[vi] = MapNode(biome->c_dust);
-		}
-	}
-}
-
-
-void MapgenFlat::generateCaves(s16 max_stone_y)
-{
-	if (max_stone_y < node_min.Y)
-		return;
-
-	noise_cave1->perlinMap3D(node_min.X, node_min.Y - 1, node_min.Z);
-	noise_cave2->perlinMap3D(node_min.X, node_min.Y - 1, node_min.Z);
-
-	v3s16 em = vm->m_area.getExtent();
-	u32 index2d = 0;
-
-	for (s16 z = node_min.Z; z <= node_max.Z; z++)
-	for (s16 x = node_min.X; x <= node_max.X; x++, index2d++) {
-		bool column_is_open = false;  // Is column open to overground
-		u32 vi = vm->m_area.index(x, node_max.Y + 1, z);
-		u32 index3d = (z - node_min.Z) * zstride + (csize.Y + 1) * ystride +
-			(x - node_min.X);
-		// Biome of column
-		Biome *biome = (Biome *)bmgr->getRaw(biomemap[index2d]);
-
-		for (s16 y = node_max.Y + 1; y >= node_min.Y - 1;
-				y--, index3d -= ystride, vm->m_area.add_y(em, vi, -1)) {
-			// Don't excavate the overgenerated stone at node_max.Y + 1,
-			// this creates a 'roof' over the tunnel, preventing light in
-			// tunnels at mapchunk borders when generating mapchunks upwards.
-			if (y > node_max.Y)
-				continue;
-
-			content_t c = vm->m_data[vi].getContent();
-			if (c == CONTENT_AIR || c == biome->c_water_top ||
-					c == biome->c_water) {
-				column_is_open = true;
-				continue;
-			}
-			// Ground
-			float d1 = contour(noise_cave1->result[index3d]);
-			float d2 = contour(noise_cave2->result[index3d]);
-			if (d1 * d2 > 0.3f && ndef->get(c).is_ground_content) {
-				// In tunnel and ground content, excavate
-				vm->m_data[vi] = MapNode(CONTENT_AIR);
-			} else if (column_is_open &&
-					(c == biome->c_filler || c == biome->c_stone)) {
-				// Tunnel entrance floor
-				vm->m_data[vi] = MapNode(biome->c_top);
-				column_is_open = false;
-			} else {
-				column_is_open = false;
-			}
-		}
-	}
-
-	if (node_max.Y > large_cave_depth)
-		return;
-
-	PseudoRandom ps(blockseed + 21343);
-	u32 bruises_count = ps.range(0, 2);
-	for (u32 i = 0; i < bruises_count; i++) {
-		CaveV5 cave(this, &ps);
-		cave.makeCave(node_min, node_max, max_stone_y);
-	}
-}