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/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MAPGEN_HEADER
#define MAPGEN_HEADER
#include "noise.h"
#include "nodedef.h"
#include "mapnode.h"
#include "util/string.h"
#include "util/container.h"
#define DEFAULT_MAPGEN "v6"
/////////////////// Mapgen flags
#define MG_TREES 0x01
#define MG_CAVES 0x02
#define MG_DUNGEONS 0x04
#define MG_FLAT 0x08
#define MG_LIGHT 0x10
#define MG_DECORATIONS 0x20
class Settings;
class MMVManip;
class INodeDefManager;
extern FlagDesc flagdesc_mapgen[];
extern FlagDesc flagdesc_gennotify[];
class Biome;
class BiomeGen;
struct BiomeParams;
class EmergeManager;
class MapBlock;
class VoxelManipulator;
struct BlockMakeData;
class VoxelArea;
class Map;
enum MapgenObject {
MGOBJ_VMANIP,
MGOBJ_HEIGHTMAP,
MGOBJ_BIOMEMAP,
MGOBJ_HEATMAP,
MGOBJ_HUMIDMAP,
MGOBJ_GENNOTIFY
};
enum GenNotifyType {
GENNOTIFY_DUNGEON,
GENNOTIFY_TEMPLE,
GENNOTIFY_CAVE_BEGIN,
GENNOTIFY_CAVE_END,
GENNOTIFY_LARGECAVE_BEGIN,
GENNOTIFY_LARGECAVE_END,
GENNOTIFY_DECORATION,
NUM_GENNOTIFY_TYPES
};
// TODO(hmmmm/paramat): make stone type selection dynamic
enum MgStoneType {
STONE,
DESERT_STONE,
SANDSTONE,
};
struct GenNotifyEvent {
GenNotifyType type;
v3s16 pos;
u32 id;
};
class GenerateNotifier {
public:
GenerateNotifier();
GenerateNotifier(u32 notify_on, std::set<u32> *notify_on_deco_ids);
void setNotifyOn(u32 notify_on);
void setNotifyOnDecoIds(std::set<u32> *notify_on_deco_ids);
bool addEvent(GenNotifyType type, v3s16 pos, u32 id=0);
void getEvents(std::map<std::string, std::vector<v3s16> > &event_map,
bool peek_events=false);
private:
u32 m_notify_on;
std::set<u32> *m_notify_on_deco_ids;
std::list<GenNotifyEvent> m_notify_events;
};
struct MapgenSpecificParams {
virtual void readParams(const Settings *settings) = 0;
virtual void writeParams(Settings *settings) const = 0;
virtual ~MapgenSpecificParams() {}
};
struct MapgenParams {
std::string mg_name;
s16 chunksize;
u64 seed;
s16 water_level;
u32 flags;
BiomeParams *bparams;
MapgenSpecificParams *sparams;
MapgenParams() :
mg_name(DEFAULT_MAPGEN),
chunksize(5),
seed(0),
water_level(1),
flags(MG_CAVES | MG_LIGHT | MG_DECORATIONS),
bparams(NULL),
sparams(NULL)
{
}
virtual ~MapgenParams();
void load(const Settings &settings);
void save(Settings &settings) const;
};
class Mapgen {
public:
int seed;
int water_level;
u32 flags;
bool generating;
int id;
MMVManip *vm;
INodeDefManager *ndef;
u32 blockseed;
s16 *heightmap;
u8 *biomemap;
v3s16 csize;
BiomeGen *biomegen;
GenerateNotifier gennotify;
Mapgen();
Mapgen(int mapgenid, MapgenParams *params, EmergeManager *emerge);
virtual ~Mapgen();
static u32 getBlockSeed(v3s16 p, int seed);
static u32 getBlockSeed2(v3s16 p, int seed);
s16 findGroundLevelFull(v2s16 p2d);
s16 findGroundLevel(v2s16 p2d, s16 ymin, s16 ymax);
s16 findLiquidSurface(v2s16 p2d, s16 ymin, s16 ymax);
void updateHeightmap(v3s16 nmin, v3s16 nmax);
void updateLiquid(UniqueQueue<v3s16> *trans_liquid, v3s16 nmin, v3s16 nmax);
void setLighting(u8 light, v3s16 nmin, v3s16 nmax);
void lightSpread(VoxelArea &a, v3s16 p, u8 light);
void calcLighting(v3s16 nmin, v3s16 nmax, v3s16 full_nmin, v3s16 full_nmax,
bool propagate_shadow = true);
void propagateSunlight(v3s16 nmin, v3s16 nmax, bool propagate_shadow);
void spreadLight(v3s16 nmin, v3s16 nmax);
virtual void makeChunk(BlockMakeData *data) {}
virtual int getGroundLevelAtPoint(v2s16 p) { return 0; }
// getSpawnLevelAtPoint() is a function within each mapgen that returns a
// suitable y co-ordinate for player spawn ('suitable' usually meaning
// within 16 nodes of water_level). If a suitable spawn level cannot be
// found at the specified (X, Z) 'MAX_MAP_GENERATION_LIMIT' is returned to
// signify this and to cause Server::findSpawnPos() to try another (X, Z).
virtual int getSpawnLevelAtPoint(v2s16 p) { return 0; }
private:
DISABLE_CLASS_COPY(Mapgen);
};
struct MapgenFactory {
virtual Mapgen *createMapgen(int mgid, MapgenParams *params,
EmergeManager *emerge) = 0;
virtual MapgenSpecificParams *createMapgenParams() = 0;
virtual ~MapgenFactory() {}
};
#endif
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