std::string default_generate_map(size_t width, size_t height, size_t island_size, size_t island_off_center,
size_t iterations, size_t hill_size,
size_t max_lakes, size_t nvillages, size_t castle_size, size_t nplayers, bool roads_between_castles,
std::map<map_location,std::string>* labels, const config& cfg)
{
log_scope("map generation");
// Odd widths are nasty
VALIDATE(is_even(width), _("Random maps with an odd width aren't supported."));
int ticks = SDL_GetTicks();
// Find out what the 'flatland' on this map is, i.e. grassland.
std::string flatland = cfg["default_flatland"];
if(flatland == "") {
flatland = t_translation::write_terrain_code(t_translation::GRASS_LAND);
}
const t_translation::t_terrain grassland = t_translation::read_terrain_code(flatland);
// We want to generate a map that is 9 times bigger
// than the actual size desired.
// Only the middle part of the map will be used,
// but the rest is so that the map we end up using
// can have a context (e.g. rivers flowing from
// out of the map into the map, same for roads, etc.)
width *= 3;
height *= 3;
LOG_NG << "generating height map...\n";
// Generate the height of everything.
const height_map heights = generate_height_map(width,height,iterations,hill_size,island_size,island_off_center);
LOG_NG << "done generating height map...\n";
LOG_NG << (SDL_GetTicks() - ticks) << "\n"; ticks = SDL_GetTicks();
config naming = cfg.child_or_empty("naming");
// HACK: dummy names to satisfy unit_race requirements
naming["id"] = "village_naming";
naming["plural_name"] = "villages";
// Make a dummy race for generating names
const unit_race name_generator(naming);
std::vector<terrain_height_mapper> height_conversion;
BOOST_FOREACH(const config &h, cfg.child_range("height")) {
height_conversion.push_back(terrain_height_mapper(h));
}
terrain_map terrain(width, t_translation::t_list(height, grassland));
size_t x, y;
for(x = 0; x != heights.size(); ++x) {
for(y = 0; y != heights[x].size(); ++y) {
for(std::vector<terrain_height_mapper>::const_iterator i = height_conversion.begin();
i != height_conversion.end(); ++i) {
if(i->convert_terrain(heights[x][y])) {
terrain[x][y] = i->convert_to();
break;
}
}
}
}
std::map<int, t_translation::coordinate> starting_positions;
LOG_NG << output_map(terrain, starting_positions);
LOG_NG << "placed land forms\n";
LOG_NG << (SDL_GetTicks() - ticks) << "\n"; ticks = SDL_GetTicks();
// Now that we have our basic set of flatland/hills/mountains/water,
// we can place lakes and rivers on the map.
// All rivers are sourced at a lake.
// Lakes must be in high land - at least 'min_lake_height'.
// (Note that terrain below a certain altitude may be made
// into bodies of water in the code above - i.e. 'sea',
// but these are not considered 'lakes', because
// they are not sources of rivers).
//
// We attempt to place 'max_lakes' lakes.
// Each lake will be placed at a random location,
// if that random location meets the minimum terrain requirements for a lake.
// We will also attempt to source a river from each lake.
std::set<location> lake_locs;
std::map<location, std::string> river_names, lake_names, road_names, bridge_names, mountain_names, forest_names, swamp_names;
const size_t nlakes = max_lakes > 0 ? (rand()%max_lakes) : 0;
for(size_t lake = 0; lake != nlakes; ++lake) {
for(int tries = 0; tries != 100; ++tries) {
const int x = rand()%width;
const int y = rand()%height;
if (heights[x][y] > cfg["min_lake_height"].to_int()) {
std::vector<location> river = generate_river(heights,
terrain, x, y, cfg["river_frequency"]);
if(river.empty() == false && labels != NULL) {
std::string base_name;
LOG_NG << "generating name for river...\n";
const std::string& name = generate_name(name_generator,"river_name",&base_name);
LOG_NG << "named river '" << name << "'\n";
size_t name_frequency = 20;
for(std::vector<location>::const_iterator r = river.begin(); r != river.end(); ++r) {
const map_location loc(r->x-width/3,r->y-height/3);
if(((r - river.begin())%name_frequency) == name_frequency/2) {
labels->insert(std::pair<map_location,std::string>(loc,name));
}
river_names.insert(std::pair<location,std::string>(loc,base_name));
}
LOG_NG << "put down river name...\n";
}
LOG_NG << "generating lake...\n";
std::set<location> locs;
bool res = generate_lake(terrain, x, y, cfg["lake_size"], locs);
if(res && labels != NULL) {
bool touches_other_lake = false;
std::string base_name;
const std::string& name = generate_name(name_generator,"lake_name",&base_name);
std::set<location>::const_iterator i;
// Only generate a name if the lake hasn't touched any other lakes,
// so that we don't end up with one big lake with multiple names.
for(i = locs.begin(); i != locs.end(); ++i) {
if(lake_locs.count(*i) != 0) {
touches_other_lake = true;
// Reassign the name of this lake to be the same as the other lake
const location loc(i->x-width/3,i->y-height/3);
const std::map<location,std::string>::const_iterator other_name = lake_names.find(loc);
if(other_name != lake_names.end()) {
base_name = other_name->second;
}
}
lake_locs.insert(*i);
}
if(!touches_other_lake) {
const map_location loc(x-width/3,y-height/3);
labels->erase(loc);
labels->insert(std::pair<map_location,std::string>(loc,name));
}
for(i = locs.begin(); i != locs.end(); ++i) {
const location loc(i->x-width/3,i->y-height/3);
lake_names.insert(std::pair<location, std::string>(loc, base_name));
}
}
break;
}
}
}
LOG_NG << "done generating rivers...\n";
LOG_NG << (SDL_GetTicks() - ticks) << "\n"; ticks = SDL_GetTicks();
const size_t default_dimensions = 40*40*9;
/*
* Convert grassland terrain to other types of flat terrain.
*
* We generate a 'temperature map' which uses the height generation
* algorithm to generate the temperature levels all over the map. Then we
* can use a combination of height and terrain to divide terrain up into
* more interesting types than the default.
*/
const height_map temperature_map = generate_height_map(width,height,
cfg["temperature_iterations"].to_int() * width * height / default_dimensions,
cfg["temperature_size"], 0, 0);
LOG_NG << "generated temperature map...\n";
LOG_NG << (SDL_GetTicks() - ticks) << "\n"; ticks = SDL_GetTicks();
std::vector<terrain_converter> converters;
BOOST_FOREACH(const config &cv, cfg.child_range("convert")) {
converters.push_back(terrain_converter(cv));
}
LOG_NG << "created terrain converters\n";
LOG_NG << (SDL_GetTicks() - ticks) << "\n"; ticks = SDL_GetTicks();
// Iterate over every flatland tile, and determine
// what type of flatland it is, based on our [convert] tags.
for(x = 0; x != width; ++x) {
for(y = 0; y != height; ++y) {
for(std::vector<terrain_converter>::const_iterator i = converters.begin(); i != converters.end(); ++i) {
if(i->convert_terrain(terrain[x][y],heights[x][y],temperature_map[x][y])) {
terrain[x][y] = i->convert_to();
break;
}
}
}
}
LOG_NG << "placing villages...\n";
LOG_NG << (SDL_GetTicks() - ticks) << "\n"; ticks = SDL_GetTicks();
/*
* Place villages in a 'grid', to make placing fair, but with villages
* displaced from their position according to terrain and randomness, to
* add some variety.
*/
std::set<location> villages;
LOG_NG << "placing castles...\n";
/** Try to find configuration for castles. */
const config &castle_config = cfg.child("castle");
if (!castle_config) {
LOG_NG << "Could not find castle configuration\n";
return std::string();
}
/*
* Castle configuration tag contains a 'valid_terrain' attribute which is a
* list of terrains that the castle may appear on.
*/
const t_translation::t_list list =
t_translation::read_list(castle_config["valid_terrain"]);
const is_valid_terrain terrain_tester(terrain, list);
/*
* Attempt to place castles at random.
*
* Once we have placed castles, we run a sanity check to make sure that the
* castles are well-placed. If the castles are not well-placed, we try
* again. Definition of 'well-placed' is if no two castles are closer than
* 'min_distance' hexes from each other, and the castles appear on a
* terrain listed in 'valid_terrain'.
*/
std::vector<location> castles;
std::set<location> failed_locs;
for(size_t player = 0; player != nplayers; ++player) {
LOG_NG << "placing castle for " << player << "\n";
log_scope("placing castle");
const int min_x = width/3 + 3;
const int min_y = height/3 + 3;
const int max_x = (width/3)*2 - 4;
const int max_y = (height/3)*2 - 4;
int min_distance = castle_config["min_distance"];
location best_loc;
int best_ranking = 0;
for(int x = min_x; x != max_x; ++x) {
for(int y = min_y; y != max_y; ++y) {
const location loc(x,y);
if(failed_locs.count(loc)) {
continue;
}
const int ranking = rank_castle_location(x,y,terrain_tester,min_x,max_x,min_y,max_y,min_distance,castles,best_ranking);
if(ranking <= 0) {
failed_locs.insert(loc);
}
if(ranking > best_ranking) {
best_ranking = ranking;
best_loc = loc;
}
}
}
if(best_ranking == 0) {
ERR_NG << "No castle location found, aborting.\n";
std::string error = _("No valid castle location found. Too many or too few mountain hexes? (please check the 'max hill size' parameter)");
throw mapgen_exception(error);
}
assert(std::find(castles.begin(), castles.end(), best_loc) == castles.end());
castles.push_back(best_loc);
// Make sure the location can't get a second castle.
failed_locs.insert(best_loc);
}
LOG_NG << "placing roads...\n";
LOG_NG << (SDL_GetTicks() - ticks) << "\n"; ticks = SDL_GetTicks();
// Place roads.
// We select two tiles at random locations on the borders
// of the map, and try to build roads between them.
int nroads = cfg["roads"];
if(roads_between_castles) {
nroads += castles.size()*castles.size();
}
std::set<location> bridges;
road_path_calculator calc(terrain,cfg);
for (int road = 0; road != nroads; ++road) {
log_scope("creating road");
/*
* We want the locations to be on the portion of the map we're actually
* going to use, since roads on other parts of the map won't have any
* influence, and doing it like this will be quicker.
*/
location src = random_point_at_side(width/3 + 2,height/3 + 2);
location dst = random_point_at_side(width/3 + 2,height/3 + 2);
src.x += width/3 - 1;
src.y += height/3 - 1;
dst.x += width/3 - 1;
dst.y += height/3 - 1;
if (roads_between_castles && road < int(castles.size() * castles.size())) {
const size_t src_castle = road/castles.size();
const size_t dst_castle = road%castles.size();
if(src_castle >= dst_castle) {
continue;
}
src = castles[src_castle];
dst = castles[dst_castle];
}
// If the road isn't very interesting (on the same border), don't draw it.
else if(src.x == dst.x || src.y == dst.y) {
continue;
}
if (calc.cost(src, 0.0) >= 1000.0 || calc.cost(dst, 0.0) >= 1000.0) {
continue;
}
// Search a path out for the road
pathfind::plain_route rt = pathfind::a_star_search(src, dst, 10000.0, &calc, width, height);
std::string road_base_name;
const std::string& name = generate_name(name_generator, "road_name", &road_base_name);
const int name_frequency = 20;
int name_count = 0;
bool on_bridge = false;
// Draw the road.
// If the search failed, rt.steps will simply be empty.
for(std::vector<location>::const_iterator step = rt.steps.begin();
step != rt.steps.end(); ++step) {
const int x = step->x;
const int y = step->y;
if(x < 0 || y < 0 || x >= static_cast<long>(width) ||
y >= static_cast<long>(height)) {
continue;
}
// Find the configuration which tells us
// what to convert this tile to, to make it into a road.
if (const config &child = cfg.find_child("road_cost", "terrain",
t_translation::write_terrain_code(terrain[x][y])))
{
// Convert to bridge means that we want to convert
// depending upon the direction the road is going.
// Typically it will be in a format like,
// convert_to_bridge=\,|,/
// '|' will be used if the road is going north-south
// '/' will be used if the road is going south west-north east
// '\' will be used if the road is going south east-north west
// The terrain will be left unchanged otherwise
// (if there is no clear direction).
const std::string &convert_to_bridge = child["convert_to_bridge"];
if(convert_to_bridge.empty() == false) {
if(step == rt.steps.begin() || step+1 == rt.steps.end())
continue;
const location& last = *(step-1);
const location& next = *(step+1);
location adj[6];
get_adjacent_tiles(*step,adj);
int direction = -1;
// If we are going north-south
if((last == adj[0] && next == adj[3]) || (last == adj[3] && next == adj[0])) {
direction = 0;
}
// If we are going south west-north east
else if((last == adj[1] && next == adj[4]) || (last == adj[4] && next == adj[1])) {
direction = 1;
}
// If we are going south east-north west
else if((last == adj[2] && next == adj[5]) || (last == adj[5] && next == adj[2])) {
direction = 2;
}
if(labels != NULL && on_bridge == false) {
on_bridge = true;
std::string bridge_base_name;
const std::string& name = generate_name(name_generator, "bridge_name", &bridge_base_name);
const location loc(x - width / 3, y-height/3);
labels->insert(std::pair<map_location,std::string>(loc,name));
bridge_names.insert(std::pair<location,std::string>(loc, bridge_base_name)); //add to use for village naming
bridges.insert(loc);
}
if(direction != -1) {
const std::vector<std::string> items = utils::split(convert_to_bridge);
if(size_t(direction) < items.size() && items[direction].empty() == false) {
terrain[x][y] = t_translation::read_terrain_code(items[direction]);
}
continue;
}
} else {
on_bridge = false;
}
// Just a plain terrain substitution for a road
const std::string &convert_to = child["convert_to"];
if(convert_to.empty() == false) {
const t_translation::t_terrain letter =
t_translation::read_terrain_code(convert_to);
if(labels != NULL && terrain[x][y] != letter && name_count++ == name_frequency && on_bridge == false) {
labels->insert(std::pair<map_location,std::string>(map_location(x-width/3,y-height/3),name));
name_count = 0;
}
terrain[x][y] = letter;
const location loc(x - width / 3, y - height / 3); //add to use for village naming
road_names.insert(std::pair<location,std::string>(loc, road_base_name));
}
}
}
LOG_NG << "looked at " << calc.calls << " locations\n";
}
// Now that road drawing is done, we can plonk down the castles.
for(std::vector<location>::const_iterator c = castles.begin(); c != castles.end(); ++c) {
if(c->valid() == false) {
continue;
}
const int x = c->x;
const int y = c->y;
const int player = c - castles.begin() + 1;
const struct t_translation::coordinate coord(x, y);
starting_positions.insert(std::pair<int, t_translation::coordinate>(player, coord));
terrain[x][y] = t_translation::HUMAN_KEEP;
const int castles[13][2] = {
{-1, 0}, {-1, -1}, {0, -1}, {1, -1}, {1, 0}, {0, 1}, {-1, 1},
{-2, 1}, {-2, 0}, {-2, -1}, {-1, -2}, {0, -2}, {1, -2}
};
for (size_t i = 0; i < castle_size - 1; i++) {
terrain[x+castles[i][0]][y+castles[i][1]] = t_translation::HUMAN_CASTLE;
}
// Remove all labels under the castle tiles
if(labels != NULL) {
labels->erase(location(x-width/3,y-height/3));
for (size_t i = 0; i < castle_size - 1; i++) {
labels->erase(location(x+castles[i][0]-width/3,
y+castles[i][1]-height/3));
}
}
}
LOG_NG << "placed castles\n";
LOG_NG << (SDL_GetTicks() - ticks) << "\n"; ticks = SDL_GetTicks();
/*Random naming for landforms: mountains, forests, swamps, hills
*we name these now that everything else is placed (as e.g., placing
* roads could split a forest)
*/
for (x = width / 3; x < (width / 3)*2; x++) {
for (y = height / 3; y < (height / 3) * 2;y++) {
//check the terrain of the tile
const location loc(x - width / 3, y - height / 3);
const t_translation::t_terrain terr = terrain[x][y];
std::string name, base_name;
std::set<std::string> used_names;
if (t_translation::terrain_matches(terr, t_translation::ALL_MOUNTAINS)) {
//name every 15th mountain
if ((rand()%15) == 0) {
for(size_t ntry = 0; ntry != 30 && (ntry == 0 || used_names.count(name) > 0); ++ntry) {
name = generate_name(name_generator, "mountain_name", &base_name);
}
labels->insert(std::pair<map_location, std::string>(loc, name));
mountain_names.insert(std::pair<location, std::string>(loc, base_name));
}
}
else if (t_translation::terrain_matches(terr, t_translation::ALL_FORESTS)) {
//if the forest tile is not named yet, name it
const std::map<location, std::string>::const_iterator forest_name = forest_names.find(loc);
if(forest_name == forest_names.end()) {
for(size_t ntry = 0; ntry != 30 && (ntry == 0 || used_names.count(name) > 0); ++ntry) {
name = generate_name(name_generator, "forest_name", &base_name);
}
forest_names.insert(std::pair<location, std::string>(loc, base_name));
// name all connected forest tiles accordingly
flood_name(loc, base_name, forest_names, t_translation::ALL_FORESTS, terrain, width, height, 0, labels, name);
}
}
else if (t_translation::terrain_matches(terr, t_translation::ALL_SWAMPS)) {
//if the swamp tile is not named yet, name it
const std::map<location, std::string>::const_iterator swamp_name = swamp_names.find(loc);
if(swamp_name == swamp_names.end()) {
for(size_t ntry = 0; ntry != 30 && (ntry == 0 || used_names.count(name) > 0); ++ntry) {
name = generate_name(name_generator, "swamp_name", &base_name);
}
swamp_names.insert(std::pair<location, std::string>(loc, base_name));
// name all connected swamp tiles accordingly
flood_name(loc, base_name, swamp_names, t_translation::ALL_SWAMPS, terrain, width, height, 0, labels, name);
}
}
}
}
if (nvillages > 0)
{
config naming_cfg = cfg.child_or_empty("village_naming");
// HACK: dummy names to satisfy unit_race requirements
naming_cfg["id"] = "village_naming";
naming_cfg["plural_name"] = "villages";
const unit_race village_names_generator(naming_cfg);
// First we work out the size of the x and y distance between villages
const size_t tiles_per_village = ((width*height)/9)/nvillages;
size_t village_x = 1, village_y = 1;
// Alternate between incrementing the x and y value.
// When they are high enough to equal or exceed the tiles_per_village,
// then we have them to the value we want them at.
while(village_x*village_y < tiles_per_village) {
if(village_x < village_y) {
++village_x;
} else {
++village_y;
}
}
std::set<std::string> used_names;
tcode_list_cache adj_liked_cache;
for(size_t vx = 0; vx < width; vx += village_x) {
LOG_NG << "village at " << vx << "\n";
for(size_t vy = rand()%village_y; vy < height; vy += village_y) {
const size_t add_x = rand()%3;
const size_t add_y = rand()%3;
const size_t x = (vx + add_x) - 1;
const size_t y = (vy + add_y) - 1;
const map_location res = place_village(terrain,x,y,2,cfg,adj_liked_cache);
if(res.x >= static_cast<long>(width) / 3 &&
res.x < static_cast<long>(width * 2) / 3 &&
res.y >= static_cast<long>(height) / 3 &&
res.y < static_cast<long>(height * 2) / 3) {
const std::string str =
t_translation::write_terrain_code(terrain[res.x][res.y]);
if (const config &child = cfg.find_child("village", "terrain", str))
{
const std::string &convert_to = child["convert_to"];
if(convert_to != "") {
terrain[res.x][res.y] =
t_translation::read_terrain_code(convert_to);
villages.insert(res);
if(labels != NULL && naming_cfg.empty() == false) {
const map_location loc(res.x-width/3,res.y-height/3);
map_location adj[6];
get_adjacent_tiles(loc,adj);
std::string name_type = "village_name";
const t_translation::t_list
field = t_translation::t_list(1, t_translation::GRASS_LAND),
forest = t_translation::t_list(1, t_translation::FOREST),
mountain = t_translation::t_list(1, t_translation::MOUNTAIN),
hill = t_translation::t_list(1, t_translation::HILL);
size_t field_count = 0, forest_count = 0, mountain_count = 0, hill_count = 0;
utils::string_map symbols;
size_t n;
for(n = 0; n != 6; ++n) {
const std::map<location,std::string>::const_iterator road_name = road_names.find(adj[n]);
if(road_name != road_names.end()) {
symbols["road"] = road_name->second;
name_type = "village_name_road";
break;
}
const std::map<location,std::string>::const_iterator river_name = river_names.find(adj[n]);
if(river_name != river_names.end()) {
symbols["river"] = river_name->second;
name_type = "village_name_river";
const std::map<location,std::string>::const_iterator bridge_name = bridge_names.find(adj[n]);
if(bridge_name != bridge_names.end()) {
//we should always end up here, since if there is an adjacent bridge, there has to be an adjacent river too
symbols["bridge"] = bridge_name->second;
name_type = "village_name_river_bridge";
}
break;
}
const std::map<location,std::string>::const_iterator forest_name = forest_names.find(adj[n]);
if(forest_name != forest_names.end()) {
symbols["forest"] = forest_name->second;
name_type = "village_name_forest";
break;
}
const std::map<location,std::string>::const_iterator lake_name = lake_names.find(adj[n]);
if(lake_name != lake_names.end()) {
symbols["lake"] = lake_name->second;
name_type = "village_name_lake";
break;
}
const std::map<location,std::string>::const_iterator mountain_name = mountain_names.find(adj[n]);
if(mountain_name != mountain_names.end()) {
symbols["mountain"] = mountain_name->second;
name_type = "village_name_mountain";
break;
}
const std::map<location,std::string>::const_iterator swamp_name = swamp_names.find(adj[n]);
if(swamp_name != swamp_names.end()) {
symbols["swamp"] = swamp_name->second;
name_type = "village_name_swamp";
break;
}
const t_translation::t_terrain terr =
terrain[adj[n].x+width/3][adj[n].y+height/3];
if(std::count(field.begin(),field.end(),terr) > 0) {
++field_count;
} else if(std::count(forest.begin(),forest.end(),terr) > 0) {
++forest_count;
} else if(std::count(hill.begin(),hill.end(),terr) > 0) {
++hill_count;
} else if(std::count(mountain.begin(),mountain.end(),terr) > 0) {
++mountain_count;
}
}
if(n == 6) {
if(field_count == 6) {
name_type = "village_name_grassland";
} else if(forest_count >= 2) {
name_type = "village_name_forest";
} else if(mountain_count >= 1) {
name_type = "village_name_mountain_anonymous";
} else if(hill_count >= 2) {
name_type = "village_name_hill";
}
}
std::string name;
for(size_t ntry = 0; ntry != 30 && (ntry == 0 || used_names.count(name) > 0); ++ntry) {
name = generate_name(village_names_generator,name_type,NULL,&symbols);
}
used_names.insert(name);
labels->insert(std::pair<map_location,std::string>(loc,name));
}
}
}
}
}
}
}
LOG_NG << "placed villages\n";
LOG_NG << (SDL_GetTicks() - ticks) << "\n"; ticks = SDL_GetTicks();
return output_map(terrain, starting_positions);
}
std::string default_map_generator_job::default_generate_map(generator_data data, std::map<map_location,std::string>* labels, const config& cfg)
{
log_scope("map generation");
// Odd widths are nasty
VALIDATE(is_even(data.width), _("Random maps with an odd width aren't supported."));
// Try to find configuration for castles
const config& castle_config = cfg.child("castle");
int ticks = SDL_GetTicks();
// We want to generate a map that is 9 times bigger than the actual size desired.
// Only the middle part of the map will be used, but the rest is so that the map we
// end up using can have a context (e.g. rivers flowing from out of the map into the map,
// same for roads, etc.)
data.width *= 3;
data.height *= 3;
config naming;
if(cfg.has_child("naming")) {
naming = game_config_.child("naming");
naming.append_attributes(cfg.child("naming"));
}
// If the [naming] child is empty, we cannot provide good names.
std::map<map_location,std::string>* misc_labels = naming.empty() ? nullptr : labels;
std::shared_ptr<name_generator>
base_name_generator, river_name_generator, lake_name_generator,
road_name_generator, bridge_name_generator, mountain_name_generator,
forest_name_generator, swamp_name_generator;
if(misc_labels != nullptr) {
name_generator_factory base_generator_factory{ naming, {"male", "base", "bridge", "road", "river", "forest", "lake", "mountain", "swamp"} };
naming.get_old_attribute("base_names", "male_names", "[naming]male_names= is deprecated, use base_names= instead");
//Due to the attribute detection feature of the factory we also support male_name_generator= but keep it undocumented.
base_name_generator = base_generator_factory.get_name_generator( (naming.has_attribute("base_names") || naming.has_attribute("base_name_generator")) ? "base" : "male" );
river_name_generator = base_generator_factory.get_name_generator("river");
lake_name_generator = base_generator_factory.get_name_generator("lake");
road_name_generator = base_generator_factory.get_name_generator("road");
bridge_name_generator = base_generator_factory.get_name_generator("bridge");
mountain_name_generator = base_generator_factory.get_name_generator("mountain");
forest_name_generator = base_generator_factory.get_name_generator("forest");
swamp_name_generator = base_generator_factory.get_name_generator("swamp");
}
// Generate the height of everything.
const height_map heights = generate_height_map(data.width, data.height, data.iterations, data.hill_size, data.island_size, data.island_off_center);
LOG_NG << "Done generating height map. " << (SDL_GetTicks() - ticks) << " ticks elapsed" << "\n";
ticks = SDL_GetTicks();
// Find out what the 'flatland' on this map is, i.e. grassland.
std::string flatland = cfg["default_flatland"];
if(flatland.empty()) {
flatland = t_translation::write_terrain_code(t_translation::GRASS_LAND);
}
const t_translation::terrain_code grassland = t_translation::read_terrain_code(flatland);
std::vector<terrain_height_mapper> height_conversion;
for(const config& h : cfg.child_range("height")) {
height_conversion.emplace_back(h);
}
terrain_map terrain(data.width, data.height, grassland);
for(size_t x = 0; x != heights.size(); ++x) {
for(size_t y = 0; y != heights[x].size(); ++y) {
for(auto i : height_conversion) {
if(i.convert_terrain(heights[x][y])) {
terrain[x][y] = i.convert_to();
break;
}
}
}
}
t_translation::starting_positions starting_positions;
LOG_NG << output_map(terrain, starting_positions);
LOG_NG << "Placed landforms. " << (SDL_GetTicks() - ticks) << " ticks elapsed" << "\n";
ticks = SDL_GetTicks();
/* Now that we have our basic set of flatland/hills/mountains/water,
* we can place lakes and rivers on the map.
* All rivers are sourced at a lake.
* Lakes must be in high land - at least 'min_lake_height'.
* (Note that terrain below a certain altitude may be made into bodies of water
* in the code above - i.e. 'sea', but these are not considered 'lakes',
* because they are not sources of rivers).
*
* We attempt to place 'max_lakes' lakes.
* Each lake will be placed at a random location, if that random location meets theminimum
* terrain requirements for a lake. We will also attempt to source a river from each lake.
*/
std::set<map_location> lake_locs;
std::map<map_location, std::string> river_names, lake_names, road_names, bridge_names, mountain_names, forest_names, swamp_names;
const size_t nlakes = data.max_lakes > 0 ? (rng_()%data.max_lakes) : 0;
for(size_t lake = 0; lake != nlakes; ++lake) {
for(int tries = 0; tries != 100; ++tries) {
const int x = rng_()%data.width;
const int y = rng_()%data.height;
if(heights[x][y] <= cfg["min_lake_height"].to_int()) {
continue;
}
std::vector<map_location> river = generate_river(heights, terrain, x, y, cfg["river_frequency"]);
if(!river.empty() && misc_labels != nullptr) {
const std::string base_name = base_name_generator->generate();
const std::string& name = river_name_generator->generate({{"base", base_name}});
LOG_NG << "Named river '" << name << "'\n";
size_t name_frequency = 20;
for(std::vector<map_location>::const_iterator r = river.begin(); r != river.end(); ++r) {
const map_location loc(r->x-data.width/3,r->y-data.height/3);
if(((r - river.begin())%name_frequency) == name_frequency/2) {
misc_labels->emplace(loc, name);
}
river_names.emplace(loc, base_name);
}
}
LOG_NG << "Generating lake...\n";
std::set<map_location> locs;
if(generate_lake(terrain, x, y, cfg["lake_size"], locs) && misc_labels != nullptr) {
bool touches_other_lake = false;
std::string base_name = base_name_generator->generate();
const std::string& name = lake_name_generator->generate({{"base", base_name}});
// Only generate a name if the lake hasn't touched any other lakes,
// so that we don't end up with one big lake with multiple names.
for(auto i : locs) {
if(lake_locs.count(i) != 0) {
touches_other_lake = true;
// Reassign the name of this lake to be the same as the other lake
const map_location loc(i.x-data.width/3,i.y-data.height/3);
const std::map<map_location,std::string>::const_iterator other_name = lake_names.find(loc);
if(other_name != lake_names.end()) {
base_name = other_name->second;
}
}
lake_locs.insert(i);
}
if(!touches_other_lake) {
const map_location loc(x-data.width/3,y-data.height/3);
misc_labels->erase(loc);
misc_labels->emplace(loc, name);
}
for(auto i : locs) {
const map_location loc(i.x-data.width/3,i.y-data.height/3);
lake_names.emplace(loc, base_name);
}
}
break;
}
}
LOG_NG << "Generated rivers. " << (SDL_GetTicks() - ticks) << " ticks elapsed" << "\n";
ticks = SDL_GetTicks();
const size_t default_dimensions = 40*40*9;
/*
* Convert grassland terrain to other types of flat terrain.
*
* We generate a 'temperature map' which uses the height generation
* algorithm to generate the temperature levels all over the map. Then we
* can use a combination of height and terrain to divide terrain up into
* more interesting types than the default.
*/
const height_map temperature_map = generate_height_map(data.width,data.height,
cfg["temperature_iterations"].to_int() * data.width * data.height / default_dimensions,
cfg["temperature_size"], 0, 0);
LOG_NG << "Generated temperature map. " << (SDL_GetTicks() - ticks) << " ticks elapsed" << "\n";
ticks = SDL_GetTicks();
std::vector<terrain_converter> converters;
for(const config& cv : cfg.child_range("convert")) {
converters.emplace_back(cv);
}
LOG_NG << "Created terrain converters. " << (SDL_GetTicks() - ticks) << " ticks elapsed" << "\n";
ticks = SDL_GetTicks();
// Iterate over every flatland tile, and determine what type of flatland it is, based on our [convert] tags.
for(int x = 0; x != data.width; ++x) {
for(int y = 0; y != data.height; ++y) {
for(auto i : converters) {
if(i.convert_terrain(terrain[x][y],heights[x][y],temperature_map[x][y])) {
terrain[x][y] = i.convert_to();
break;
}
}
}
}
LOG_NG << "Placing castles...\n";
/*
* Attempt to place castles at random.
*
* After they are placed, we run a sanity check to make sure no two castles
* are closer than 'min_distance' hexes apart, and that they appear on a
* terrain listed in 'valid_terrain'.
*
* If not, we attempt to place them again.
*/
std::vector<map_location> castles;
std::set<map_location> failed_locs;
if(castle_config) {
/*
* Castle configuration tag contains a 'valid_terrain' attribute which is a
* list of terrains that the castle may appear on.
*/
const t_translation::ter_list list = t_translation::read_list(castle_config["valid_terrain"]);
const is_valid_terrain terrain_tester(terrain, list);
for(int player = 0; player != data.nplayers; ++player) {
LOG_NG << "placing castle for " << player << "\n";
lg::scope_logger inner_scope_logging_object__(lg::general(), "placing castle");
const int min_x = data.width/3 + 3;
const int min_y = data.height/3 + 3;
const int max_x = (data.width/3)*2 - 4;
const int max_y = (data.height/3)*2 - 4;
int min_distance = castle_config["min_distance"];
map_location best_loc;
int best_ranking = 0;
for(int x = min_x; x != max_x; ++x) {
for(int y = min_y; y != max_y; ++y) {
const map_location loc(x,y);
if(failed_locs.count(loc)) {
continue;
}
const int ranking = rank_castle_location(x, y, terrain_tester, min_x, max_x, min_y, max_y, min_distance, castles, best_ranking);
if(ranking <= 0) {
failed_locs.insert(loc);
}
if(ranking > best_ranking) {
best_ranking = ranking;
best_loc = loc;
}
}
}
if(best_ranking == 0) {
ERR_NG << "No castle location found, aborting." << std::endl;
const std::string error = _("No valid castle location found. Too many or too few mountain hexes? (please check the 'max hill size' parameter)");
throw mapgen_exception(error);
}
assert(std::find(castles.begin(), castles.end(), best_loc) == castles.end());
castles.push_back(best_loc);
// Make sure the location can't get a second castle.
failed_locs.insert(best_loc);
}
LOG_NG << "Placed castles. " << (SDL_GetTicks() - ticks) << " ticks elapsed" << "\n";
}
LOG_NG << "Placing roads...\n";
ticks = SDL_GetTicks();
// Place roads.
// We select two tiles at random locations on the borders of the map
// and try to build roads between them.
int nroads = cfg["roads"];
if(data.link_castles) {
nroads += castles.size()*castles.size();
}
std::set<map_location> bridges;
road_path_calculator calc(terrain, cfg, rng_());
for(int road = 0; road != nroads; ++road) {
lg::scope_logger another_inner_scope_logging_object__(lg::general(), "creating road");
/*
* We want the locations to be on the portion of the map we're actually
* going to use, since roads on other parts of the map won't have any
* influence, and doing it like this will be quicker.
*/
map_location src = random_point_at_side(data.width/3 + 2,data.height/3 + 2);
map_location dst = random_point_at_side(data.width/3 + 2,data.height/3 + 2);
src.x += data.width/3 - 1;
src.y += data.height/3 - 1;
dst.x += data.width/3 - 1;
dst.y += data.height/3 - 1;
if(data.link_castles && road < int(castles.size() * castles.size())) {
const size_t src_castle = road/castles.size();
const size_t dst_castle = road%castles.size();
if(src_castle >= dst_castle) {
continue;
}
src = castles[src_castle];
dst = castles[dst_castle];
} else if(src.x == dst.x || src.y == dst.y) {
// If the road isn't very interesting (on the same border), don't draw it.
continue;
}
if(calc.cost(src, 0.0) >= 1000.0 || calc.cost(dst, 0.0) >= 1000.0) {
continue;
}
// Search a path out for the road
pathfind::plain_route rt = pathfind::a_star_search(src, dst, 10000.0, calc, data.width, data.height);
const std::string& road_base_name = misc_labels != nullptr
? base_name_generator->generate()
: "";
const std::string& road_name = misc_labels != nullptr
? road_name_generator->generate({{"base", road_base_name}})
: "";
const int name_frequency = 20;
int name_count = 0;
bool on_bridge = false;
// Draw the road.
// If the search failed, rt.steps will simply be empty.
for(std::vector<map_location>::const_iterator step = rt.steps.begin();
step != rt.steps.end(); ++step) {
const int x = step->x;
const int y = step->y;
if(x < 0 || y < 0 || x >= static_cast<long>(data.width) || y >= static_cast<long>(data.height)) {
continue;
}
// Find the configuration which tells us what to convert this tile to, to make it into a road.
const config& child = cfg.find_child("road_cost", "terrain", t_translation::write_terrain_code(terrain[x][y]));
if(child.empty()){
continue;
}
/* Convert to bridge means that we want to convert depending on the direction of the road.
* Typically it will be in a format like convert_to_bridge = \,|,/
* '|' will be used if the road is going north-south
* '/' will be used if the road is going south west-north east
* '\' will be used if the road is going south east-north west
* The terrain will be left unchanged otherwise (if there is no clear direction).
*/
const std::string& convert_to_bridge = child["convert_to_bridge"];
if(!convert_to_bridge.empty()) {
if(step == rt.steps.begin() || step+1 == rt.steps.end()) {
continue;
}
const map_location& last = *(step-1);
const map_location& next = *(step+1);
map_location adj[6];
get_adjacent_tiles(*step,adj);
int direction = -1;
// If we are going north-south
if((last == adj[0] && next == adj[3]) || (last == adj[3] && next == adj[0])) {
direction = 0;
}
// If we are going south west-north east
else if((last == adj[1] && next == adj[4]) || (last == adj[4] && next == adj[1])) {
direction = 1;
}
// If we are going south east-north west
else if((last == adj[2] && next == adj[5]) || (last == adj[5] && next == adj[2])) {
direction = 2;
}
if(misc_labels != nullptr && !on_bridge) {
on_bridge = true;
std::string bridge_base_name = base_name_generator->generate();
const std::string& name = bridge_name_generator->generate({{"base", bridge_base_name}});
const map_location loc(x - data.width / 3, y-data.height/3);
misc_labels->emplace(loc, name);
bridge_names.emplace(loc, bridge_base_name); //add to use for village naming
bridges.insert(loc);
}
if(direction != -1) {
const std::vector<std::string> items = utils::split(convert_to_bridge);
if(size_t(direction) < items.size() && !items[direction].empty()) {
terrain[x][y] = t_translation::read_terrain_code(items[direction]);
}
continue;
}
} else {
on_bridge = false;
}
// Just a plain terrain substitution for a road
const std::string& convert_to = child["convert_to"];
if(!convert_to.empty()) {
const t_translation::terrain_code letter = t_translation::read_terrain_code(convert_to);
if(misc_labels != nullptr && terrain[x][y] != letter && name_count++ == name_frequency && !on_bridge) {
misc_labels->emplace(map_location(x - data.width / 3, y - data.height / 3), road_name);
name_count = 0;
}
terrain[x][y] = letter;
if(misc_labels != nullptr) {
const map_location loc(x - data.width / 3, y - data.height / 3); //add to use for village naming
if(!road_base_name.empty())
road_names.emplace(loc, road_base_name);
}
}
}
}
// Now that road drawing is done, we can plonk down the castles.
for(std::vector<map_location>::const_iterator c = castles.begin(); c != castles.end(); ++c) {
if(!c->valid()) {
continue;
}
const int x = c->x;
const int y = c->y;
const int player = c - castles.begin() + 1;
const t_translation::coordinate coord(x, y);
starting_positions.insert(t_translation::starting_positions::value_type(std::to_string(player), coord));
terrain[x][y] = t_translation::HUMAN_KEEP;
const int castle_array[13][2] {
{-1, 0}, {-1, -1}, {0, -1}, {1, -1}, {1, 0}, {0, 1}, {-1, 1},
{-2, 1}, {-2, 0}, {-2, -1}, {-1, -2}, {0, -2}, {1, -2}
};
for(int i = 0; i < data.castle_size - 1; i++) {
terrain[x+ castle_array[i][0]][y+ castle_array[i][1]] = t_translation::HUMAN_CASTLE;
}
// Remove all labels under the castle tiles
if(labels != nullptr) {
labels->erase(map_location(x-data.width/3,y-data.height/3));
for(int i = 0; i < data.castle_size - 1; i++) {
labels->erase(map_location(x+ castle_array[i][0]-data.width/3, y+ castle_array[i][1]-data.height/3));
}
}
}
LOG_NG << "Placed roads. " << (SDL_GetTicks() - ticks) << " ticks elapsed" << "\n";
ticks = SDL_GetTicks();
/* Random naming for landforms: mountains, forests, swamps, hills
* we name these now that everything else is placed (as e.g., placing
* roads could split a forest)
*/
if(misc_labels != nullptr) {
for(int x = data.width / 3; x < (data.width / 3)*2; x++) {
for(int y = data.height / 3; y < (data.height / 3) * 2;y++) {
//check the terrain of the tile
const map_location loc(x - data.width / 3, y - data.height / 3);
const t_translation::terrain_code terr = terrain[x][y];
std::string name, base_name;
std::set<std::string> used_names;
if(t_translation::terrain_matches(terr, t_translation::ALL_MOUNTAINS)) {
//name every 15th mountain
if((rng_() % 15) == 0) {
for(size_t ntry = 0; ntry != 30 && (ntry == 0 || used_names.count(name) > 0); ++ntry) {
base_name = base_name_generator->generate();
name = mountain_name_generator->generate({{"base", base_name}});
}
misc_labels->emplace(loc, name);
mountain_names.emplace(loc, base_name);
}
} else if(t_translation::terrain_matches(terr, t_translation::ALL_FORESTS)) {
// If the forest tile is not named yet, name it
const std::map<map_location, std::string>::const_iterator forest_name = forest_names.find(loc);
if(forest_name == forest_names.end()) {
for(size_t ntry = 0; ntry != 30 && (ntry == 0 || used_names.count(name) > 0); ++ntry) {
base_name = base_name_generator->generate();
name = forest_name_generator->generate({{"base", base_name}});
}
forest_names.emplace(loc, base_name);
// name all connected forest tiles accordingly
flood_name(loc, base_name, forest_names, t_translation::ALL_FORESTS, terrain, data.width, data.height, 0, misc_labels, name);
}
} else if(t_translation::terrain_matches(terr, t_translation::ALL_SWAMPS)) {
// If the swamp tile is not named yet, name it
const std::map<map_location, std::string>::const_iterator swamp_name = swamp_names.find(loc);
if(swamp_name == swamp_names.end()) {
for(size_t ntry = 0; ntry != 30 && (ntry == 0 || used_names.count(name) > 0); ++ntry) {
base_name = base_name_generator->generate();
name = swamp_name_generator->generate({{"base", base_name}});
}
swamp_names.emplace(loc, base_name);
// name all connected swamp tiles accordingly
flood_name(loc, base_name, swamp_names, t_translation::ALL_SWAMPS, terrain, data.width, data.height, 0, misc_labels, name);
}
}
}
}
}
LOG_NG << "Named landforms. " << (SDL_GetTicks() - ticks) << " ticks elapsed" << "\n";
LOG_NG << "Placing villages...\n";
ticks = SDL_GetTicks();
/*
* Place villages in a 'grid', to make placing fair, but with villages
* displaced from their position according to terrain and randomness, to
* add some variety.
*/
std::set<map_location> villages;
if(data.nvillages > 0) {
// First we work out the size of the x and y distance between villages
const size_t tiles_per_village = ((data.width*data.height)/9)/data.nvillages;
size_t village_x = 1, village_y = 1;
// Alternate between incrementing the x and y value.
// When they are high enough to equal or exceed the tiles_per_village,
// then we have them to the value we want them at.
while(village_x*village_y < tiles_per_village) {
if(village_x < village_y) {
++village_x;
} else {
++village_y;
}
}
std::set<std::string> used_names;
tcode_list_cache adj_liked_cache;
config village_naming = game_config_.child("village_naming");
if(cfg.has_child("village_naming")) {
village_naming.append_attributes(cfg.child("village_naming"));
}
// If the [village_naming] child is empty, we cannot provide good names.
std::map<map_location,std::string>* village_labels = village_naming.empty() ? nullptr : labels;
for(int vx = 0; vx < data.width; vx += village_x) {
LOG_NG << "village at " << vx << "\n";
for(int vy = rng_()%village_y; vy < data.height; vy += village_y) {
const size_t add = rng_()%3;
const size_t x = (vx + add) - 1;
const size_t y = (vy + add) - 1;
const map_location res = place_village(terrain, x, y, 2, cfg, adj_liked_cache);
if(res.x < static_cast<long>(data.width ) / 3 ||
res.x >= static_cast<long>(data.width * 2) / 3 ||
res.y < static_cast<long>(data.height ) / 3 ||
res.y >= static_cast<long>(data.height * 2) / 3) {
continue;
}
const std::string str = t_translation::write_terrain_code(terrain[res.x][res.y]);
const std::string& convert_to = cfg.find_child("village", "terrain", str)["convert_to"].str();
if(convert_to.empty()) {
continue;
}
terrain[res.x][res.y] = t_translation::read_terrain_code(convert_to);
villages.insert(res);
if(village_labels == nullptr) {
continue;
}
name_generator_factory village_name_generator_factory{ village_naming,
{"base", "male", "village", "lake", "river", "bridge", "grassland", "forest", "hill", "mountain", "mountain_anon", "road", "swamp"} };
village_naming.get_old_attribute("base_names", "male_names", "[village_naming]male_names= is deprecated, use base_names= instead");
//Due to the attribute detection feature of the factory we also support male_name_generator= but keep it undocumented.
base_name_generator = village_name_generator_factory.get_name_generator(
(village_naming.has_attribute("base_names") || village_naming.has_attribute("base_name_generator")) ? "base" : "male" );
const map_location loc(res.x-data.width/3,res.y-data.height/3);
map_location adj[6];
get_adjacent_tiles(loc,adj);
std::string name_type = "village";
const t_translation::ter_list
field = t_translation::ter_list(1, t_translation::GRASS_LAND),
forest = t_translation::ter_list(1, t_translation::FOREST),
mountain = t_translation::ter_list(1, t_translation::MOUNTAIN),
hill = t_translation::ter_list(1, t_translation::HILL);
size_t field_count = 0, forest_count = 0, mountain_count = 0, hill_count = 0;
std::map<std::string,std::string> symbols;
size_t n;
for(n = 0; n != 6; ++n) {
const std::map<map_location,std::string>::const_iterator road_name = road_names.find(adj[n]);
if(road_name != road_names.end()) {
symbols["road"] = road_name->second;
name_type = "road";
break;
}
const std::map<map_location,std::string>::const_iterator river_name = river_names.find(adj[n]);
if(river_name != river_names.end()) {
symbols["river"] = river_name->second;
name_type = "river";
const std::map<map_location,std::string>::const_iterator bridge_name = bridge_names.find(adj[n]);
if(bridge_name != bridge_names.end()) {
//we should always end up here, since if there is an adjacent bridge, there has to be an adjacent river too
symbols["bridge"] = bridge_name->second;
name_type = "river_bridge";
}
break;
}
const std::map<map_location,std::string>::const_iterator forest_name = forest_names.find(adj[n]);
if(forest_name != forest_names.end()) {
symbols["forest"] = forest_name->second;
name_type = "forest";
break;
}
const std::map<map_location,std::string>::const_iterator lake_name = lake_names.find(adj[n]);
if(lake_name != lake_names.end()) {
symbols["lake"] = lake_name->second;
name_type = "lake";
break;
}
const std::map<map_location,std::string>::const_iterator mountain_name = mountain_names.find(adj[n]);
if(mountain_name != mountain_names.end()) {
symbols["mountain"] = mountain_name->second;
name_type = "mountain";
break;
}
const std::map<map_location,std::string>::const_iterator swamp_name = swamp_names.find(adj[n]);
if(swamp_name != swamp_names.end()) {
symbols["swamp"] = swamp_name->second;
name_type = "swamp";
break;
}
const t_translation::terrain_code terr = terrain[adj[n].x+data.width/3][adj[n].y+data.height/3];
if(std::count(field.begin(),field.end(),terr) > 0) {
++field_count;
} else if(std::count(forest.begin(),forest.end(),terr) > 0) {
++forest_count;
} else if(std::count(hill.begin(),hill.end(),terr) > 0) {
++hill_count;
} else if(std::count(mountain.begin(),mountain.end(),terr) > 0) {
++mountain_count;
}
}
if(n == 6) {
if(field_count == 6) {
name_type = "grassland";
} else if(forest_count >= 2) {
name_type = "forest";
} else if(mountain_count >= 1) {
name_type = "mountain_anon";
} else if(hill_count >= 2) {
name_type = "hill";
}
}
std::string name;
symbols["base"] = base_name_generator->generate();
std::shared_ptr<name_generator> village_name_generator = village_name_generator_factory.get_name_generator(name_type);
for(size_t ntry = 0; ntry != 30 && (ntry == 0 || used_names.count(name) > 0); ++ntry) {
name = village_name_generator->generate(symbols);
}
used_names.insert(name);
village_labels->emplace(loc, name);
}
}
}
LOG_NG << "Placed villages. " << (SDL_GetTicks() - ticks) << " ticks elapsed" << "\n";
return output_map(terrain, starting_positions);
}