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1657 lines (1330 loc) · 43.9 KB
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#include <iostream>
#include <iomanip>
#include <map>
#include <algorithm>
#include <vector>
#include "Core.h"
#include "Console.h"
#include "Export.h"
#include "PluginManager.h"
#include "modules/MapCache.h"
#include "modules/Random.h"
#include "modules/World.h"
#include "MiscUtils.h"
#include "DataDefs.h"
#include "df/world.h"
#include "df/world_data.h"
#include "df/world_region_details.h"
#include "df/world_region_feature.h"
#include "df/world_geo_biome.h"
#include "df/world_geo_layer.h"
#include "df/world_underground_region.h"
#include "df/feature_init.h"
#include "df/region_map_entry.h"
#include "df/inclusion_type.h"
#include "df/viewscreen_choose_start_sitest.h"
#include "df/plant.h"
#ifdef LINUX_BUILD
#include <tr1/memory>
using std::tr1::shared_ptr;
#else
#include <memory>
using std::shared_ptr;
#endif
using namespace df::enums;
using namespace DFHack;
using namespace MapExtras;
using namespace DFHack::Random;
DFHACK_PLUGIN("3dveins");
REQUIRE_GLOBAL(world);
REQUIRE_GLOBAL(gametype);
command_result cmd_3dveins(color_ostream &out, std::vector <std::string> & parameters);
DFhackCExport command_result plugin_init ( color_ostream &out, std::vector <PluginCommand> &commands)
{
commands.push_back(PluginCommand(
"3dveins", "Rewrites the veins to make them extend in 3D space.",
cmd_3dveins, false,
" Run this after embark to change all veins on the map to a shape\n"
" that consistently spans Z levels. The operation preserves the\n"
" mineral counts reported by prospect.\n"
));
return CR_OK;
}
DFhackCExport command_result plugin_shutdown ( color_ostream &out )
{
return CR_OK;
}
/*
* Vein density fields
*/
typedef std::pair<int,df::inclusion_type> t_veinkey;
struct NoiseFunction
{
typedef shared_ptr<NoiseFunction> Ptr;
typedef std::pair<float,float> t_range;
virtual ~NoiseFunction() {};
/*
* Veins are placed by clipping the computed value
* against a floating threshold, with values above
* the threshold causing placement of a vein tile.
*/
virtual float eval(float x, float y, float z) = 0;
virtual t_range range() = 0;
virtual void displace(float &x, float &y, float &z) = 0;
};
inline float apow(float a, float b) { return powf(fabsf(a), b); }
struct Distribution : NoiseFunction
{
float bx, by, bz;
Distribution(MersenneRNG &rng, float scale)
{
bx = rng.drandom() * scale;
by = rng.drandom() * scale;
bz = rng.drandom() * scale;
}
void displace(float &x, float &y, float &z) {
x += bx; y += by; z += bz;
}
};
struct DistributionVein : Distribution
{
PerlinNoise3D<float> density1, density2;
PerlinNoise3D<float> strand1a, strand1b;
DistributionVein(MersenneRNG &rng) : Distribution(rng, 96) {
density1.init(rng);
density2.init(rng);
strand1a.init(rng);
strand1b.init(rng);
}
float eval(float x, float y, float z) {
return 0.1f * density1(x/96, y/96, z/48)
+ 0.2f * density2(x/48, y/48, z/24)
- apow( strand1a(x/24,y/24,z/12)
+0.6f*strand1b(x/16,y/16,z/8), 0.6f);
}
t_range range() { return t_range(-0.3f-1.33f,0.3f); }
};
struct DistributionCluster : Distribution
{
PerlinNoise3D<float> density1, density2, shape;
DistributionCluster(MersenneRNG &rng) : Distribution(rng, 96) {
density1.init(rng);
density2.init(rng);
shape.init(rng);
}
float eval(float x, float y, float z) {
return 0.2f * density1(x/96, y/96, z/32)
+ 0.6f * density2(x/48, y/48, z/16)
+ shape(x/24, y/24, z/8);
}
t_range range() { return t_range(-1.8f,1.8f); }
};
struct DistributionClusterSmall : Distribution
{
PerlinNoise3D<float> density1, density2, shape;
DistributionClusterSmall(MersenneRNG &rng) : Distribution(rng, 96) {
density1.init(rng);
density2.init(rng);
shape.init(rng);
}
float eval(float x, float y, float z) {
const float scale = 1.0f/4.3f;
return 0.06f * density1(x/96, y/96, z/48)
+ 0.12f * density2(x/24, y/24, z/12)
+ apow(shape(x*scale, y*scale, z*scale), 0.1f);
}
t_range range() { return t_range(-0.18f,1.18f); }
};
struct DistributionClusterOne : Distribution
{
PerlinNoise3D<float> density1, density2, shape;
DistributionClusterOne(MersenneRNG &rng) : Distribution(rng, 96) {
density1.init(rng);
density2.init(rng);
shape.init(rng);
}
float eval(float x, float y, float z) {
return 0.05f * density1(x/96, y/96, z/48)
+ 0.1f * density2(x/48, y/48, z/24)
+ shape(x-bx, y-by, z-bz);
}
t_range range() { return t_range(-1.15f,1.15f); }
};
static NoiseFunction *makeVeinDistribution(t_veinkey vein, MersenneRNG &rng)
{
using namespace df::enums::inclusion_type;
switch (vein.second)
{
case VEIN:
return new DistributionVein(rng);
case CLUSTER_SMALL:
return new DistributionClusterSmall(rng);
case CLUSTER_ONE:
return new DistributionClusterOne(rng);
case CLUSTER:
default:
return new DistributionCluster(rng);
}
}
/*
* Data structures.
*/
template<class T>
class BlockGrid
{
df::coord dim;
std::vector<T> buf;
public:
BlockGrid(df::coord size) : dim(size) {
buf.resize(dim.x * dim.y * dim.z);
}
BlockGrid(df::coord2d size, int zdepth = 1)
: dim(df::coord(size.x, size.y, zdepth))
{
buf.resize(dim.x * dim.y * dim.z);
}
const df::coord &size() { return dim; }
void resize_depth(int16_t zdepth) {
dim.z = zdepth;
buf.resize(dim.x * dim.y * dim.z);
}
void shift_depth(int16_t to_add) {
dim.z += to_add;
buf.insert(buf.begin(), dim.x*dim.y*to_add, T());
}
T &operator() (int x, int y, int z = 0) {
return buf[x + dim.x*(y + dim.y*z)];
}
T &operator() (df::coord pos) {
return buf[pos.x + dim.x*(pos.y + dim.y*pos.z)];
}
T &operator() (df::coord2d pos, int z = 0) {
return buf[pos.x + dim.x*(pos.y + dim.y*z)];
}
};
enum SpecialMatCodes {
// Tile not mapped to an actual tile
SMC_NO_MAPPING = -1,
// Tile not assigned to a vein yet
SMC_LAYER = -2
};
struct GeoLayer;
struct GeoColumn;
struct GeoBiome;
/* Representation of a block in geolayer coordinate space.
* That is, it represents a block that would have happened
* if geological layers weren't shifted in Z direction to
* conform to terrain height. Computing veins in this system
* of coordinates should make them nicely follow the layers.
*/
struct GeoBlock
{
GeoLayer *layer;
GeoColumn *column;
df::coord pos;
uint16_t arena_mask, arena_unmined;
int16_t arena_material;
df::tile_bitmask unmined;
int16_t material[16][16];
uint8_t veintype[16][16];
float weight[16][16];
GeoBlock(GeoLayer *parent, df::coord pos) : layer(parent), pos(pos) {
memset(material, -1, sizeof(material));
}
bool prepare_arena(int16_t env_material, NoiseFunction::Ptr fn);
int measure_placement(float threshold);
void place_tiles(float threshold, int16_t new_material, df::inclusion_type itype);
};
/*
* A set of layers that have the same vein type, distribution
* and approximate location, and thus should be placed using
* one binsearch pass for more uniform appearance.
*/
struct VeinExtent
{
typedef shared_ptr<VeinExtent> Ptr;
typedef std::vector<Ptr> PVec;
t_veinkey vein;
int probability, num_tiles;
Ptr parent;
int parent_depth;
bool placed;
int placed_tiles;
NoiseFunction::Ptr distribution;
int num_unmined, num_layer, min_z, max_z;
std::vector<GeoLayer*> layers;
VeinExtent(t_veinkey vein) : vein(vein) {
probability = num_tiles = placed_tiles = 0;
num_unmined = num_layer = 0;
min_z = max_z = 0;
parent_depth = 0;
placed = false;
}
float density() { return float(num_tiles) / num_unmined; }
void set_parent(Ptr pp) {
if (parent)
parent->add_tiles(-num_tiles);
parent = pp;
if (parent)
parent->add_tiles(num_tiles);
parent_depth = (pp ? pp->parent_depth+1 : 0);
}
int parent_mat() {
return parent ? parent->vein.first : SMC_LAYER;
}
void add_tiles(int tiles) {
num_tiles += tiles;
if (parent)
parent->add_tiles(tiles);
}
bool is_similar(Ptr ext2) {
return probability == ext2->probability &&
parent_mat() == ext2->parent_mat();
}
void link(GeoLayer *layer);
void merge_into(VeinExtent::Ptr ext2);
void place_tiles();
};
struct GeoColumn
{
// Original Z level values for each layer
int16_t min_level[16][16][BiomeInfo::MAX_LAYERS];
int16_t max_level[16][16][BiomeInfo::MAX_LAYERS];
int8_t top_layer[16][16];
int8_t bottom_layer[16][16];
int8_t top_solid_z[16][16];
GeoColumn()
{
memset(min_level, -1, sizeof(min_level));
memset(max_level, -1, sizeof(max_level));
memset(top_layer, -1, sizeof(top_layer));
memset(bottom_layer, -1, sizeof(bottom_layer));
memset(top_solid_z, -1, sizeof(top_solid_z));
}
};
struct GeoLayer
{
GeoBiome *biome;
int index;
df::world_geo_layer *info;
int thickness, z_bias;
int aquifer_depth;
int16_t material;
bool is_soil;
bool is_soil_layer;
// World-global origin coordinates in blocks
df::coord world_pos;
int min_z() { return world_pos.z - z_bias; }
int max_z() { return world_pos.z + thickness - 1; }
df::coord2d size;
BlockGrid<GeoBlock*> blocks;
std::vector<GeoBlock*> block_list;
int tiles, unmined_tiles, mineral_tiles;
std::map<t_veinkey,int> mineral_count;
std::map<t_veinkey, VeinExtent::Ptr> veins;
GeoLayer(GeoBiome *parent, int index, df::world_geo_layer *info);
~GeoLayer() {
for (size_t i = 0; i < block_list.size(); i++)
delete block_list[i];
}
GeoBlock *blockAt(df::coord pos)
{
assert(pos.z >= 0);
if (pos.z >= blocks.size().z)
blocks.resize_depth(pos.z+1);
GeoBlock *&blk = blocks(pos);
if (!blk) {
blk = new GeoBlock(this, pos);
block_list.push_back(blk);
}
return blk;
}
GeoBlock *getBlockAt(df::coord pos)
{
if (pos.z < 0 || pos.z >= blocks.size().z)
return NULL;
return blocks(pos);
}
void setZBias(int bias)
{
if (bias <= z_bias) return;
blocks.shift_depth(bias - z_bias);
z_bias = bias;
}
void print_mineral_stats(color_ostream &out)
{
for (auto it = mineral_count.begin(); it != mineral_count.end(); ++it)
out << " " << MaterialInfo(0,it->first.first).getToken()
<< " " << ENUM_KEY_STR(inclusion_type,it->first.second)
<< ": \t\t" << it->second << " (" << (float(it->second)/unmined_tiles) << ")" << std::endl;
out.print(" Total tiles: %d (%d unmined)\n", tiles, unmined_tiles);
}
bool form_veins(color_ostream &out);
};
struct GeoBiome
{
const BiomeInfo &info;
df::coord2d world_pos;
df::coord2d size;
BlockGrid<GeoColumn> columns;
std::vector<GeoLayer*> layers;
GeoBiome(const BiomeInfo &biome, df::coord2d base, df::coord2d mapsize)
: info(biome), world_pos(base), size(mapsize), columns(mapsize)
{
}
~GeoBiome()
{
for (size_t i = 0; i < layers.size(); i++)
delete layers[i];
}
bool init_layers();
void print_mineral_stats(color_ostream &out)
{
out.print("Geological biome %d:\n", info.geo_index);
for (size_t i = 0; i < layers.size(); i++)
if (layers[i])
{
out << " Layer " << i << std::endl;
layers[i]->print_mineral_stats(out);
}
}
};
GeoLayer::GeoLayer(GeoBiome *parent, int index, df::world_geo_layer *info)
: biome(parent), index(index), info(info),
world_pos(parent->world_pos.x, parent->world_pos.y, -info->top_height),
size(parent->size), blocks(parent->size)
{
thickness = info->top_height - info->bottom_height + 1;
z_bias = 0;
aquifer_depth = 0;
tiles = unmined_tiles = mineral_tiles = 0;
material = info->mat_index;
is_soil = isSoilInorganic(material);
is_soil_layer = (info->type == geo_layer_type::SOIL || info->type == geo_layer_type::SOIL_SAND);
}
const unsigned NUM_INCLUSIONS = 1+(int)ENUM_LAST_ITEM(inclusion_type);
struct VeinGenerator
{
color_ostream &out;
MapCache map;
df::coord2d size;
df::coord2d base;
std::map<int, GeoBiome*> biomes;
std::vector<GeoBiome*> biome_by_idx;
struct VMats {
bool can_support_aquifer;
int8_t default_type;
int8_t valid_type[NUM_INCLUSIONS];
uint32_t seeds[NUM_INCLUSIONS];
NoiseFunction::Ptr funcs[NUM_INCLUSIONS];
VMats()
{
default_type = -2;
memset(valid_type, -1, sizeof(valid_type));
}
};
std::vector<VMats> materials;
std::map<t_veinkey, VeinExtent::PVec> veins;
VeinGenerator(color_ostream &out) : out(out) {}
~VeinGenerator() {
for (auto it = biomes.begin(); it != biomes.end(); ++it)
delete it->second;
}
GeoLayer *mapLayer(Block *pb, df::coord2d tile);
bool init_biomes();
bool scan_tiles();
bool scan_layer_depth(Block *b, df::coord2d column, int z);
bool adjust_layer_depth(df::coord2d column);
bool scan_block_tiles(Block *b, df::coord2d column, int z);
void write_tiles();
void write_block_tiles(Block *b, df::coord2d column, int z);
bool form_veins();
bool place_orphan(t_veinkey vein, int size, GeoLayer *from);
void init_seeds();
NoiseFunction::Ptr get_noise(t_veinkey vein);
bool place_veins(bool verbose);
void print_mineral_stats()
{
for (auto it = biomes.begin(); it != biomes.end(); ++it)
it->second->print_mineral_stats(out);
}
};
/*
* General initialization
*/
bool VeinGenerator::init_biomes()
{
auto &mats = df::inorganic_raw::get_vector();
materials.resize(world->raws.inorganics.size());
for (size_t i = 0; i < mats.size(); i++)
{
materials[i].can_support_aquifer = mats[i]->flags.is_set(inorganic_flags::AQUIFER);
// Be silent about slade veins, which can happen below hell
if (mats[i]->flags.is_set(inorganic_flags::DEEP_SURFACE))
materials[i].valid_type[0] = -2;
}
biome_by_idx.resize(map.getBiomeCount());
size = df::coord2d(map.maxBlockX()+1, map.maxBlockY()+1);
base = df::coord2d(world->map.region_x*3, world->map.region_y*3);
for (size_t i = 0; i < biome_by_idx.size(); i++)
{
const BiomeInfo &info = map.getBiomeByIndex(i);
if (info.geo_index < 0 || !info.geobiome)
{
out.printerr("Biome %d is not defined.\n", i);
return false;
}
GeoBiome *&biome = biomes[info.geo_index];
if (!biome)
{
biome = new GeoBiome(info, base, size);
if (!biome->init_layers())
return false;
// Mark valid vein types
auto &layers = info.geobiome->layers;
for (size_t i = 0; i < layers.size(); i++)
{
auto layer = layers[i];
for (size_t j = 0; j < layer->vein_mat.size(); j++)
{
if (unsigned(layer->vein_mat[j]) >= materials.size() ||
unsigned(layer->vein_type[j]) >= NUM_INCLUSIONS)
continue;
auto &minfo = materials[layer->vein_mat[j]];
int type = layer->vein_type[j];
minfo.valid_type[type] = type;
if (minfo.default_type < 0 || type == inclusion_type::CLUSTER)
minfo.default_type = type;
}
}
}
biome_by_idx[i] = biome;
}
return true;
}
bool GeoBiome::init_layers()
{
auto &info_layers = info.geobiome->layers;
layers.resize(info_layers.size());
for (size_t i = 0; i < layers.size(); i++)
{
layers[i] = new GeoLayer(this, i, info_layers[i]);
}
return true;
}
/*
* Initial statistics collection scan. It has to:
*
* 1) Find out how the layers are shifted in Z direction for each tile column.
* 2) Record which tiles are available, which are unmined, and how much minerals are there.
*/
GeoLayer *VeinGenerator::mapLayer(Block *pb, df::coord2d tile)
{
int idx = pb->biomeIndexAt(tile);
GeoBiome *biome = biome_by_idx.at(idx);
int lidx = pb->layerIndexAt(tile);
if (unsigned(lidx) >= biome->layers.size())
return NULL;
return biome->layers[lidx];
}
static bool isTransientMaterial(df::tiletype tile)
{
using namespace df::enums::tiletype_material;
switch (tileMaterial(tile))
{
case AIR:
case LAVA_STONE:
case PLANT:
case ROOT:
case TREE:
case MUSHROOM:
return true;
default:
return false;
}
}
static bool isSkyBlock(Block *b)
{
for (int x = 0; x < 16; x++)
{
for (int y = 0; y < 16; y++)
{
df::coord2d tile(x,y);
auto dsgn = b->DesignationAt(tile);
auto ttype = b->baseTiletypeAt(tile);
if (dsgn.bits.subterranean || !dsgn.bits.light || !isTransientMaterial(ttype))
return false;
}
}
return true;
}
static int findTopBlock(MapCache &map, int x, int y)
{
for (int z = map.maxZ(); z >= 0; z--)
{
Block *b = map.BlockAt(df::coord(x,y,z));
if (b && b->is_valid() && !isSkyBlock(b))
return z;
}
return -1;
}
bool VeinGenerator::scan_tiles()
{
for (int x = 0; x < size.x; x++)
{
for (int y = 0; y < size.y; y++)
{
df::coord2d column(x,y);
int top = findTopBlock(map, x, y);
// First find where layers start and end
for (int z = top; z >= 0; z--)
{
Block *b = map.BlockAt(df::coord(x,y,z));
if (!b || !b->is_valid())
continue;
if (!scan_layer_depth(b, column, z))
return false;
}
if (!adjust_layer_depth(column))
return false;
// Collect tile data
for (int z = top; z >= 0; z--)
{
Block *b = map.BlockAt(df::coord(x,y,z));
if (!b || !b->is_valid())
continue;
if (!scan_block_tiles(b, column, z))
return false;
map.discardBlock(b);
}
// Discard this column of parsed blocks
map.trash();
}
}
return true;
}
bool VeinGenerator::scan_layer_depth(Block *b, df::coord2d column, int z)
{
for (int x = 0; x < 16; x++)
{
for (int y = 0; y < 16; y++)
{
df::coord2d tile(x,y);
GeoLayer *layer = mapLayer(b, tile);
if (!layer)
continue;
int idx = layer->index;
auto &col_info = layer->biome->columns(column);
auto &max_level = col_info.max_level[x][y];
auto &min_level = col_info.min_level[x][y];
auto &top = col_info.top_layer[x][y];
auto &top_solid = col_info.top_solid_z[x][y];
auto &bottom = col_info.bottom_layer[x][y];
auto ttype = b->baseTiletypeAt(tile);
bool obsidian = isTransientMaterial(ttype);
if (top_solid < 0 && !obsidian && isWallTerrain(ttype))
top_solid = z;
if (max_level[idx] < 0)
{
// Do not start the layer stack in open air.
// Those tiles can be very weird.
if (bottom < 0 && (isOpenTerrain(ttype) || obsidian))
continue;
max_level[idx] = min_level[idx] = z;
if (top < 0 || idx < top)
top = idx;
bottom = std::max<int8_t>(idx, bottom);
}
else
{
if (z != min_level[idx]-1 && min_level[idx] <= top_solid)
{
out.printerr(
"Discontinuous layer %d at (%d,%d,%d).\n",
layer->index, x+column.x*16, y+column.y*16, z
);
return false;
}
min_level[idx] = z;
}
}
}
return true;
}
bool VeinGenerator::adjust_layer_depth(df::coord2d column)
{
for (auto it = biomes.begin(); it != biomes.end(); ++it)
{
GeoBiome *biome = it->second;
auto &col_info = biome->columns(column);
for (int x = 0; x < 16; x++)
{
for (int y = 0; y < 16; y++)
{
auto &max_level = col_info.max_level[x][y];
auto &min_level = col_info.min_level[x][y];
auto top_solid = col_info.top_solid_z[x][y];
int min_defined = col_info.top_layer[x][y];
int max_defined = col_info.bottom_layer[x][y];
if (max_defined < 0)
continue;
int last_top = min_defined;
// Verify assumptions
for (int i = min_defined; i < max_defined; i++)
{
if (max_level[i] >= top_solid)
last_top = i;
if (max_level[i+1] < 0 && min_level[i] > top_solid)
max_level[i+1] = min_level[i+1] = min_level[i];
if (max_level[i+1] > top_solid)
continue;
if (max_level[i+1] != min_level[i]-1)
{
out.printerr(
"Gap or overlap with next layer %d at (%d,%d,%d-%d).\n",
i+1, x+column.x*16, y+column.y*16, max_level[i+1], min_level[i]
);
return false;
}
}
for (int i = min_defined; i < max_defined; i++)
{
auto layer = biome->layers[i];
int size = max_level[i]-min_level[i]+1;
if (size == layer->thickness)
continue;
// Adjust the top layers so that the bottom of the layer maps to the correct place
if (max_level[i] >= top_solid)
{
max_level[i] += layer->thickness - size;
if (size > layer->thickness)
layer->setZBias(size - layer->thickness);
continue;
}
// If below a thick soil layer, allow thickness to pass from prev to current.
// This accounts for a probable bug in worldgen soil placement code.
if (i > min_defined && i-1 <= last_top)
{
auto prev = biome->layers[i-1];
if (size > layer->thickness &&
prev->is_soil_layer && prev->thickness > 1 &&
size <= layer->thickness+prev->thickness-1)
{
max_level[i] += layer->thickness - size;
layer->setZBias(size - layer->thickness);
continue;
}
}
out.printerr(
"Layer height change in layer %d at (%d,%d,%d): %d instead of %d.\n",
i, x+column.x*16, y+column.y*16, max_level[i],
size, biome->layers[i]->thickness
);
return false;
}
}
}
}
return true;
}
bool VeinGenerator::scan_block_tiles(Block *b, df::coord2d column, int z)
{
bool aquifer = b->getRaw()->flags.bits.has_aquifer;
for (int x = 0; x < 16; x++)
{
for (int y = 0; y < 16; y++)
{
df::coord2d tile(x,y);
GeoLayer *layer = mapLayer(b, tile);
if (!layer)
continue;
auto tt = b->baseTiletypeAt(tile);
bool wall = isWallTerrain(tt);
bool matches = false;
switch (tileMaterial(tt))
{
case tiletype_material::MINERAL:
{
t_veinkey key(b->veinMaterialAt(tile),b->veinTypeAt(tile));
// Check if the vein material and type is reasonable
if (unsigned(key.first) >= materials.size() ||
unsigned(key.second) >= NUM_INCLUSIONS)
{
out.printerr("Invalid vein code: %d %d - aborting.\n",key.first,key.second);
return false;
}
int8_t &status = materials[key.first].valid_type[key.second];
if (status == -1)
{
// Report first occurence of unreasonable vein spec
out.printerr(
"Unexpected vein %s %s - ",
MaterialInfo(0,key.first).getToken().c_str(),
ENUM_KEY_STR(inclusion_type, key.second).c_str()
);
status = materials[key.first].default_type;
if (status < 0)
out.printerr("will be left in place.\n");
else
out.printerr(
"correcting to %s.\n",
ENUM_KEY_STR(inclusion_type, df::inclusion_type(status)).c_str()
);
}
if (status >= 0)
{
key.second = df::inclusion_type(status);
matches = true;
// Count minerals
if (wall)
{
layer->mineral_tiles++;
layer->mineral_count[key]++;
}
}
break;
}
case tiletype_material::SOIL:
matches = layer->is_soil;
break;
case tiletype_material::STONE:
matches = !layer->is_soil;
break;
default:;
}
// This tile should be overwritten
if (matches)
{
auto &col_info = layer->biome->columns(column);
int max_level = col_info.max_level[x][y][layer->index] + layer->z_bias;
GeoBlock *block = layer->blockAt(df::coord(column, max_level-z));
block->material[x][y] = SMC_LAYER;
layer->tiles++;
if (wall)
{
layer->unmined_tiles++;
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