minetest/src/mapgen/mg_decoration.h
Paramat 42fcfb75e8
Allow more than 255 biomes, document new maximum (#9855)
Change biomemap data type from u8 to u16.
New technical (not practical) maximum is 65535 biomes.
2020-05-20 22:16:14 +01:00

153 lines
3.4 KiB
C++

/*
Minetest
Copyright (C) 2014-2018 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
Copyright (C) 2015-2018 paramat
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.
*/
#pragma once
#include <unordered_set>
#include "objdef.h"
#include "noise.h"
#include "nodedef.h"
typedef u16 biome_t; // copy from mg_biome.h to avoid an unnecessary include
class Mapgen;
class MMVManip;
class PcgRandom;
class Schematic;
enum DecorationType {
DECO_SIMPLE,
DECO_SCHEMATIC,
DECO_LSYSTEM
};
#define DECO_PLACE_CENTER_X 0x01
#define DECO_PLACE_CENTER_Y 0x02
#define DECO_PLACE_CENTER_Z 0x04
#define DECO_USE_NOISE 0x08
#define DECO_FORCE_PLACEMENT 0x10
#define DECO_LIQUID_SURFACE 0x20
#define DECO_ALL_FLOORS 0x40
#define DECO_ALL_CEILINGS 0x80
extern FlagDesc flagdesc_deco[];
class Decoration : public ObjDef, public NodeResolver {
public:
Decoration() = default;
virtual ~Decoration() = default;
virtual void resolveNodeNames();
bool canPlaceDecoration(MMVManip *vm, v3s16 p);
size_t placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax);
virtual size_t generate(MMVManip *vm, PcgRandom *pr, v3s16 p, bool ceiling) = 0;
u32 flags = 0;
int mapseed = 0;
std::vector<content_t> c_place_on;
s16 sidelen = 1;
s16 y_min;
s16 y_max;
float fill_ratio = 0.0f;
NoiseParams np;
std::vector<content_t> c_spawnby;
s16 nspawnby;
s16 place_offset_y = 0;
std::unordered_set<biome_t> biomes;
protected:
void cloneTo(Decoration *def) const;
};
class DecoSimple : public Decoration {
public:
ObjDef *clone() const;
virtual void resolveNodeNames();
virtual size_t generate(MMVManip *vm, PcgRandom *pr, v3s16 p, bool ceiling);
std::vector<content_t> c_decos;
s16 deco_height;
s16 deco_height_max;
u8 deco_param2;
u8 deco_param2_max;
};
class DecoSchematic : public Decoration {
public:
ObjDef *clone() const;
DecoSchematic() = default;
virtual ~DecoSchematic();
virtual size_t generate(MMVManip *vm, PcgRandom *pr, v3s16 p, bool ceiling);
Rotation rotation;
Schematic *schematic = nullptr;
bool was_cloned = false; // see FIXME inside DecoSchemtic::clone()
};
/*
class DecoLSystem : public Decoration {
public:
virtual void generate(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax);
};
*/
class DecorationManager : public ObjDefManager {
public:
DecorationManager(IGameDef *gamedef);
virtual ~DecorationManager() = default;
DecorationManager *clone() const;
const char *getObjectTitle() const
{
return "decoration";
}
static Decoration *create(DecorationType type)
{
switch (type) {
case DECO_SIMPLE:
return new DecoSimple;
case DECO_SCHEMATIC:
return new DecoSchematic;
//case DECO_LSYSTEM:
// return new DecoLSystem;
default:
return NULL;
}
}
size_t placeAllDecos(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax);
private:
DecorationManager() {};
};