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minetest/src/mapgen.cpp
Perttu Ahola fdf6eecd59 Make map generator more responsive
2011-11-29 19:13:51 +02:00

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/*
Minetest-c55
Copyright (C) 2010-2011 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 General Public License as published by
the Free Software Foundation; either version 2 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 General Public License for more details.
You should have received a copy of the GNU 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.
*/
#include "mapgen.h"
#include "voxel.h"
#include "noise.h"
#include "mapblock.h"
#include "map.h"
#include "mineral.h"
//#include "serverobject.h"
#include "content_sao.h"
#include "nodedef.h"
#include "content_mapnode.h" // For content_mapnode_get_new_name
namespace mapgen
{
/*
Some helper functions for the map generator
*/
#if 0
static s16 find_ground_level(VoxelManipulator &vmanip, v2s16 p2d)
{
v3s16 em = vmanip.m_area.getExtent();
s16 y_nodes_max = vmanip.m_area.MaxEdge.Y;
s16 y_nodes_min = vmanip.m_area.MinEdge.Y;
u32 i = vmanip.m_area.index(v3s16(p2d.X, y_nodes_max, p2d.Y));
s16 y;
for(y=y_nodes_max; y>=y_nodes_min; y--)
{
MapNode &n = vmanip.m_data[i];
if(content_walkable(n.d))
break;
vmanip.m_area.add_y(em, i, -1);
}
if(y >= y_nodes_min)
return y;
else
return y_nodes_min;
}
static s16 find_ground_level_clever(VoxelManipulator &vmanip, v2s16 p2d)
{
v3s16 em = vmanip.m_area.getExtent();
s16 y_nodes_max = vmanip.m_area.MaxEdge.Y;
s16 y_nodes_min = vmanip.m_area.MinEdge.Y;
u32 i = vmanip.m_area.index(v3s16(p2d.X, y_nodes_max, p2d.Y));
s16 y;
for(y=y_nodes_max; y>=y_nodes_min; y--)
{
MapNode &n = vmanip.m_data[i];
if(content_walkable(n.d)
&& n.getContent() != LEGN(ndef, "CONTENT_TREE")
&& n.getContent() != LEGN(ndef, "CONTENT_LEAVES"))
break;
vmanip.m_area.add_y(em, i, -1);
}
if(y >= y_nodes_min)
return y;
else
return y_nodes_min;
}
#endif
void make_tree(ManualMapVoxelManipulator &vmanip, v3s16 p0,
bool is_apple_tree, INodeDefManager *ndef)
{
MapNode treenode(LEGN(ndef, "CONTENT_TREE"));
MapNode leavesnode(LEGN(ndef, "CONTENT_LEAVES"));
MapNode applenode(LEGN(ndef, "CONTENT_APPLE"));
s16 trunk_h = myrand_range(4, 5);
v3s16 p1 = p0;
for(s16 ii=0; ii<trunk_h; ii++)
{
if(vmanip.m_area.contains(p1))
vmanip.m_data[vmanip.m_area.index(p1)] = treenode;
p1.Y++;
}
// p1 is now the last piece of the trunk
p1.Y -= 1;
VoxelArea leaves_a(v3s16(-2,-1,-2), v3s16(2,2,2));
//SharedPtr<u8> leaves_d(new u8[leaves_a.getVolume()]);
Buffer<u8> leaves_d(leaves_a.getVolume());
for(s32 i=0; i<leaves_a.getVolume(); i++)
leaves_d[i] = 0;
// Force leaves at near the end of the trunk
{
s16 d = 1;
for(s16 z=-d; z<=d; z++)
for(s16 y=-d; y<=d; y++)
for(s16 x=-d; x<=d; x++)
{
leaves_d[leaves_a.index(v3s16(x,y,z))] = 1;
}
}
// Add leaves randomly
for(u32 iii=0; iii<7; iii++)
{
s16 d = 1;
v3s16 p(
myrand_range(leaves_a.MinEdge.X, leaves_a.MaxEdge.X-d),
myrand_range(leaves_a.MinEdge.Y, leaves_a.MaxEdge.Y-d),
myrand_range(leaves_a.MinEdge.Z, leaves_a.MaxEdge.Z-d)
);
for(s16 z=0; z<=d; z++)
for(s16 y=0; y<=d; y++)
for(s16 x=0; x<=d; x++)
{
leaves_d[leaves_a.index(p+v3s16(x,y,z))] = 1;
}
}
// Blit leaves to vmanip
for(s16 z=leaves_a.MinEdge.Z; z<=leaves_a.MaxEdge.Z; z++)
for(s16 y=leaves_a.MinEdge.Y; y<=leaves_a.MaxEdge.Y; y++)
for(s16 x=leaves_a.MinEdge.X; x<=leaves_a.MaxEdge.X; x++)
{
v3s16 p(x,y,z);
p += p1;
if(vmanip.m_area.contains(p) == false)
continue;
u32 vi = vmanip.m_area.index(p);
if(vmanip.m_data[vi].getContent() != CONTENT_AIR
&& vmanip.m_data[vi].getContent() != CONTENT_IGNORE)
continue;
u32 i = leaves_a.index(x,y,z);
if(leaves_d[i] == 1) {
bool is_apple = myrand_range(0,99) < 10;
if(is_apple_tree && is_apple) {
vmanip.m_data[vi] = applenode;
} else {
vmanip.m_data[vi] = leavesnode;
}
}
}
}
static void make_jungletree(VoxelManipulator &vmanip, v3s16 p0,
INodeDefManager *ndef)
{
MapNode treenode(LEGN(ndef, "CONTENT_JUNGLETREE"));
MapNode leavesnode(LEGN(ndef, "CONTENT_LEAVES"));
for(s16 x=-1; x<=1; x++)
for(s16 z=-1; z<=1; z++)
{
if(myrand_range(0, 2) == 0)
continue;
v3s16 p1 = p0 + v3s16(x,0,z);
v3s16 p2 = p0 + v3s16(x,-1,z);
if(vmanip.m_area.contains(p2)
&& vmanip.m_data[vmanip.m_area.index(p2)] == CONTENT_AIR)
vmanip.m_data[vmanip.m_area.index(p2)] = treenode;
else if(vmanip.m_area.contains(p1))
vmanip.m_data[vmanip.m_area.index(p1)] = treenode;
}
s16 trunk_h = myrand_range(8, 12);
v3s16 p1 = p0;
for(s16 ii=0; ii<trunk_h; ii++)
{
if(vmanip.m_area.contains(p1))
vmanip.m_data[vmanip.m_area.index(p1)] = treenode;
p1.Y++;
}
// p1 is now the last piece of the trunk
p1.Y -= 1;
VoxelArea leaves_a(v3s16(-3,-2,-3), v3s16(3,2,3));
//SharedPtr<u8> leaves_d(new u8[leaves_a.getVolume()]);
Buffer<u8> leaves_d(leaves_a.getVolume());
for(s32 i=0; i<leaves_a.getVolume(); i++)
leaves_d[i] = 0;
// Force leaves at near the end of the trunk
{
s16 d = 1;
for(s16 z=-d; z<=d; z++)
for(s16 y=-d; y<=d; y++)
for(s16 x=-d; x<=d; x++)
{
leaves_d[leaves_a.index(v3s16(x,y,z))] = 1;
}
}
// Add leaves randomly
for(u32 iii=0; iii<30; iii++)
{
s16 d = 1;
v3s16 p(
myrand_range(leaves_a.MinEdge.X, leaves_a.MaxEdge.X-d),
myrand_range(leaves_a.MinEdge.Y, leaves_a.MaxEdge.Y-d),
myrand_range(leaves_a.MinEdge.Z, leaves_a.MaxEdge.Z-d)
);
for(s16 z=0; z<=d; z++)
for(s16 y=0; y<=d; y++)
for(s16 x=0; x<=d; x++)
{
leaves_d[leaves_a.index(p+v3s16(x,y,z))] = 1;
}
}
// Blit leaves to vmanip
for(s16 z=leaves_a.MinEdge.Z; z<=leaves_a.MaxEdge.Z; z++)
for(s16 y=leaves_a.MinEdge.Y; y<=leaves_a.MaxEdge.Y; y++)
for(s16 x=leaves_a.MinEdge.X; x<=leaves_a.MaxEdge.X; x++)
{
v3s16 p(x,y,z);
p += p1;
if(vmanip.m_area.contains(p) == false)
continue;
u32 vi = vmanip.m_area.index(p);
if(vmanip.m_data[vi].getContent() != CONTENT_AIR
&& vmanip.m_data[vi].getContent() != CONTENT_IGNORE)
continue;
u32 i = leaves_a.index(x,y,z);
if(leaves_d[i] == 1)
vmanip.m_data[vi] = leavesnode;
}
}
void make_papyrus(VoxelManipulator &vmanip, v3s16 p0,
INodeDefManager *ndef)
{
MapNode papyrusnode(LEGN(ndef, "CONTENT_PAPYRUS"));
s16 trunk_h = myrand_range(2, 3);
v3s16 p1 = p0;
for(s16 ii=0; ii<trunk_h; ii++)
{
if(vmanip.m_area.contains(p1))
vmanip.m_data[vmanip.m_area.index(p1)] = papyrusnode;
p1.Y++;
}
}
void make_cactus(VoxelManipulator &vmanip, v3s16 p0,
INodeDefManager *ndef)
{
MapNode cactusnode(LEGN(ndef, "CONTENT_CACTUS"));
s16 trunk_h = 3;
v3s16 p1 = p0;
for(s16 ii=0; ii<trunk_h; ii++)
{
if(vmanip.m_area.contains(p1))
vmanip.m_data[vmanip.m_area.index(p1)] = cactusnode;
p1.Y++;
}
}
#if 0
static void make_randomstone(VoxelManipulator &vmanip, v3s16 p0)
{
MapNode stonenode(LEGN(ndef, "CONTENT_STONE"));
s16 size = myrand_range(3, 6);
VoxelArea stone_a(v3s16(-2,0,-2), v3s16(2,size,2));
Buffer<u8> stone_d(stone_a.getVolume());
for(s32 i=0; i<stone_a.getVolume(); i++)
stone_d[i] = 0;
// Force stone at bottom to make it usually touch the ground
{
for(s16 z=0; z<=0; z++)
for(s16 y=0; y<=0; y++)
for(s16 x=0; x<=0; x++)
{
stone_d[stone_a.index(v3s16(x,y,z))] = 1;
}
}
// Generate from perlin noise
for(s16 z=stone_a.MinEdge.Z; z<=stone_a.MaxEdge.Z; z++)
for(s16 y=stone_a.MinEdge.Y; y<=stone_a.MaxEdge.Y; y++)
for(s16 x=stone_a.MinEdge.X; x<=stone_a.MaxEdge.X; x++)
{
double d = noise3d_perlin((float)x/3.,(float)z/3.,(float)y/3.,
p0.Z*4243+p0.Y*34+p0.X, 2, 0.5);
if(z == stone_a.MinEdge.Z || z == stone_a.MaxEdge.Z)
d -= 0.3;
if(/*y == stone_a.MinEdge.Y ||*/ y == stone_a.MaxEdge.Y)
d -= 0.3;
if(x == stone_a.MinEdge.X || x == stone_a.MaxEdge.X)
d -= 0.3;
if(d > 0.0)
{
u32 vi = stone_a.index(v3s16(x,y,z));
stone_d[vi] = 1;
}
}
/*// Add stone randomly
for(u32 iii=0; iii<7; iii++)
{
s16 d = 1;
v3s16 p(
myrand_range(stone_a.MinEdge.X, stone_a.MaxEdge.X-d),
myrand_range(stone_a.MinEdge.Y, stone_a.MaxEdge.Y-d),
myrand_range(stone_a.MinEdge.Z, stone_a.MaxEdge.Z-d)
);
for(s16 z=0; z<=d; z++)
for(s16 y=0; y<=d; y++)
for(s16 x=0; x<=d; x++)
{
stone_d[stone_a.index(p+v3s16(x,y,z))] = 1;
}
}*/
// Blit stone to vmanip
for(s16 z=stone_a.MinEdge.Z; z<=stone_a.MaxEdge.Z; z++)
for(s16 y=stone_a.MinEdge.Y; y<=stone_a.MaxEdge.Y; y++)
for(s16 x=stone_a.MinEdge.X; x<=stone_a.MaxEdge.X; x++)
{
v3s16 p(x,y,z);
p += p0;
if(vmanip.m_area.contains(p) == false)
continue;
u32 vi = vmanip.m_area.index(p);
if(vmanip.m_data[vi].getContent() != CONTENT_AIR
&& vmanip.m_data[vi].getContent() != CONTENT_IGNORE)
continue;
u32 i = stone_a.index(x,y,z);
if(stone_d[i] == 1)
vmanip.m_data[vi] = stonenode;
}
}
#endif
#if 0
static void make_largestone(VoxelManipulator &vmanip, v3s16 p0)
{
MapNode stonenode(LEGN(ndef, "CONTENT_STONE"));
s16 size = myrand_range(8, 16);
VoxelArea stone_a(v3s16(-size/2,0,-size/2), v3s16(size/2,size,size/2));
Buffer<u8> stone_d(stone_a.getVolume());
for(s32 i=0; i<stone_a.getVolume(); i++)
stone_d[i] = 0;
// Force stone at bottom to make it usually touch the ground
{
for(s16 z=0; z<=0; z++)
for(s16 y=0; y<=0; y++)
for(s16 x=0; x<=0; x++)
{
stone_d[stone_a.index(v3s16(x,y,z))] = 1;
}
}
// Generate from perlin noise
for(s16 z=stone_a.MinEdge.Z; z<=stone_a.MaxEdge.Z; z++)
for(s16 y=stone_a.MinEdge.Y; y<=stone_a.MaxEdge.Y; y++)
for(s16 x=stone_a.MinEdge.X; x<=stone_a.MaxEdge.X; x++)
{
double d = 1.0;
d += noise3d_perlin((float)x/10.,(float)z/10.,(float)y/10.,
p0.Z*5123+p0.Y*2439+p0.X, 2, 0.5);
double mid_z = (stone_a.MaxEdge.Z+stone_a.MinEdge.Z)/2;
double mid_x = (stone_a.MaxEdge.X+stone_a.MinEdge.X)/2;
double mid_y = (stone_a.MaxEdge.Y+stone_a.MinEdge.Y)/2;
double dz = (double)z-mid_z;
double dx = (double)x-mid_x;
double dy = MYMAX(0, (double)y-mid_y);
double r = sqrt(dz*dz+dx*dx+dy*dy);
d /= (2*r/size)*2 + 0.01;
if(d > 1.0)
{
u32 vi = stone_a.index(v3s16(x,y,z));
stone_d[vi] = 1;
}
}
/*// Add stone randomly
for(u32 iii=0; iii<7; iii++)
{
s16 d = 1;
v3s16 p(
myrand_range(stone_a.MinEdge.X, stone_a.MaxEdge.X-d),
myrand_range(stone_a.MinEdge.Y, stone_a.MaxEdge.Y-d),
myrand_range(stone_a.MinEdge.Z, stone_a.MaxEdge.Z-d)
);
for(s16 z=0; z<=d; z++)
for(s16 y=0; y<=d; y++)
for(s16 x=0; x<=d; x++)
{
stone_d[stone_a.index(p+v3s16(x,y,z))] = 1;
}
}*/
// Blit stone to vmanip
for(s16 z=stone_a.MinEdge.Z; z<=stone_a.MaxEdge.Z; z++)
for(s16 y=stone_a.MinEdge.Y; y<=stone_a.MaxEdge.Y; y++)
for(s16 x=stone_a.MinEdge.X; x<=stone_a.MaxEdge.X; x++)
{
v3s16 p(x,y,z);
p += p0;
if(vmanip.m_area.contains(p) == false)
continue;
u32 vi = vmanip.m_area.index(p);
/*if(vmanip.m_data[vi].getContent() != CONTENT_AIR
&& vmanip.m_data[vi].getContent() != CONTENT_IGNORE)
continue;*/
u32 i = stone_a.index(x,y,z);
if(stone_d[i] == 1)
vmanip.m_data[vi] = stonenode;
}
}
#endif
/*
Dungeon making routines
*/
#define VMANIP_FLAG_DUNGEON_INSIDE VOXELFLAG_CHECKED1
#define VMANIP_FLAG_DUNGEON_PRESERVE VOXELFLAG_CHECKED2
#define VMANIP_FLAG_DUNGEON_UNTOUCHABLE (\
VMANIP_FLAG_DUNGEON_INSIDE|VMANIP_FLAG_DUNGEON_PRESERVE)
static void make_room1(VoxelManipulator &vmanip, v3s16 roomsize, v3s16 roomplace,
INodeDefManager *ndef)
{
// Make +-X walls
for(s16 z=0; z<roomsize.Z; z++)
for(s16 y=0; y<roomsize.Y; y++)
{
{
v3s16 p = roomplace + v3s16(0,y,z);
if(vmanip.m_area.contains(p) == false)
continue;
u32 vi = vmanip.m_area.index(p);
if(vmanip.m_flags[vi] & VMANIP_FLAG_DUNGEON_UNTOUCHABLE)
continue;
vmanip.m_data[vi] = MapNode(LEGN(ndef, "CONTENT_COBBLE"));
}
{
v3s16 p = roomplace + v3s16(roomsize.X-1,y,z);
if(vmanip.m_area.contains(p) == false)
continue;
u32 vi = vmanip.m_area.index(p);
if(vmanip.m_flags[vi] & VMANIP_FLAG_DUNGEON_UNTOUCHABLE)
continue;
vmanip.m_data[vi] = MapNode(LEGN(ndef, "CONTENT_COBBLE"));
}
}
// Make +-Z walls
for(s16 x=0; x<roomsize.X; x++)
for(s16 y=0; y<roomsize.Y; y++)
{
{
v3s16 p = roomplace + v3s16(x,y,0);
if(vmanip.m_area.contains(p) == false)
continue;
u32 vi = vmanip.m_area.index(p);
if(vmanip.m_flags[vi] & VMANIP_FLAG_DUNGEON_UNTOUCHABLE)
continue;
vmanip.m_data[vi] = MapNode(LEGN(ndef, "CONTENT_COBBLE"));
}
{
v3s16 p = roomplace + v3s16(x,y,roomsize.Z-1);
if(vmanip.m_area.contains(p) == false)
continue;
u32 vi = vmanip.m_area.index(p);
if(vmanip.m_flags[vi] & VMANIP_FLAG_DUNGEON_UNTOUCHABLE)
continue;
vmanip.m_data[vi] = MapNode(LEGN(ndef, "CONTENT_COBBLE"));
}
}
// Make +-Y walls (floor and ceiling)
for(s16 z=0; z<roomsize.Z; z++)
for(s16 x=0; x<roomsize.X; x++)
{
{
v3s16 p = roomplace + v3s16(x,0,z);
if(vmanip.m_area.contains(p) == false)
continue;
u32 vi = vmanip.m_area.index(p);
if(vmanip.m_flags[vi] & VMANIP_FLAG_DUNGEON_UNTOUCHABLE)
continue;
vmanip.m_data[vi] = MapNode(LEGN(ndef, "CONTENT_COBBLE"));
}
{
v3s16 p = roomplace + v3s16(x,roomsize.Y-1,z);
if(vmanip.m_area.contains(p) == false)
continue;
u32 vi = vmanip.m_area.index(p);
if(vmanip.m_flags[vi] & VMANIP_FLAG_DUNGEON_UNTOUCHABLE)
continue;
vmanip.m_data[vi] = MapNode(LEGN(ndef, "CONTENT_COBBLE"));
}
}
// Fill with air
for(s16 z=1; z<roomsize.Z-1; z++)
for(s16 y=1; y<roomsize.Y-1; y++)
for(s16 x=1; x<roomsize.X-1; x++)
{
v3s16 p = roomplace + v3s16(x,y,z);
if(vmanip.m_area.contains(p) == false)
continue;
u32 vi = vmanip.m_area.index(p);
vmanip.m_flags[vi] |= VMANIP_FLAG_DUNGEON_UNTOUCHABLE;
vmanip.m_data[vi] = MapNode(CONTENT_AIR);
}
}
static void make_fill(VoxelManipulator &vmanip, v3s16 place, v3s16 size,
u8 avoid_flags, MapNode n, u8 or_flags)
{
for(s16 z=0; z<size.Z; z++)
for(s16 y=0; y<size.Y; y++)
for(s16 x=0; x<size.X; x++)
{
v3s16 p = place + v3s16(x,y,z);
if(vmanip.m_area.contains(p) == false)
continue;
u32 vi = vmanip.m_area.index(p);
if(vmanip.m_flags[vi] & avoid_flags)
continue;
vmanip.m_flags[vi] |= or_flags;
vmanip.m_data[vi] = n;
}
}
static void make_hole1(VoxelManipulator &vmanip, v3s16 place,
INodeDefManager *ndef)
{
make_fill(vmanip, place, v3s16(1,2,1), 0, MapNode(CONTENT_AIR),
VMANIP_FLAG_DUNGEON_INSIDE);
}
static void make_door1(VoxelManipulator &vmanip, v3s16 doorplace, v3s16 doordir,
INodeDefManager *ndef)
{
make_hole1(vmanip, doorplace, ndef);
// Place torch (for testing)
//vmanip.m_data[vmanip.m_area.index(doorplace)] = MapNode(LEGN(ndef, "CONTENT_TORCH"));
}
static v3s16 rand_ortho_dir(PseudoRandom &random)
{
if(random.next()%2==0)
return random.next()%2 ? v3s16(-1,0,0) : v3s16(1,0,0);
else
return random.next()%2 ? v3s16(0,0,-1) : v3s16(0,0,1);
}
static v3s16 turn_xz(v3s16 olddir, int t)
{
v3s16 dir;
if(t == 0)
{
// Turn right
dir.X = olddir.Z;
dir.Z = -olddir.X;
dir.Y = olddir.Y;
}
else
{
// Turn left
dir.X = -olddir.Z;
dir.Z = olddir.X;
dir.Y = olddir.Y;
}
return dir;
}
static v3s16 random_turn(PseudoRandom &random, v3s16 olddir)
{
int turn = random.range(0,2);
v3s16 dir;
if(turn == 0)
{
// Go straight
dir = olddir;
}
else if(turn == 1)
// Turn right
dir = turn_xz(olddir, 0);
else
// Turn left
dir = turn_xz(olddir, 1);
return dir;
}
static void make_corridor(VoxelManipulator &vmanip, v3s16 doorplace,
v3s16 doordir, v3s16 &result_place, v3s16 &result_dir,
PseudoRandom &random, INodeDefManager *ndef)
{
make_hole1(vmanip, doorplace, ndef);
v3s16 p0 = doorplace;
v3s16 dir = doordir;
u32 length;
if(random.next()%2)
length = random.range(1,13);
else
length = random.range(1,6);
length = random.range(1,13);
u32 partlength = random.range(1,13);
u32 partcount = 0;
s16 make_stairs = 0;
if(random.next()%2 == 0 && partlength >= 3)
make_stairs = random.next()%2 ? 1 : -1;
for(u32 i=0; i<length; i++)
{
v3s16 p = p0 + dir;
if(partcount != 0)
p.Y += make_stairs;
/*// If already empty
if(vmanip.getNodeNoExNoEmerge(p).getContent()
== CONTENT_AIR
&& vmanip.getNodeNoExNoEmerge(p+v3s16(0,1,0)).getContent()
== CONTENT_AIR)
{
}*/
if(vmanip.m_area.contains(p) == true
&& vmanip.m_area.contains(p+v3s16(0,1,0)) == true)
{
if(make_stairs)
{
make_fill(vmanip, p+v3s16(-1,-1,-1), v3s16(3,5,3),
VMANIP_FLAG_DUNGEON_UNTOUCHABLE, MapNode(LEGN(ndef, "CONTENT_COBBLE")), 0);
make_fill(vmanip, p, v3s16(1,2,1), 0, MapNode(CONTENT_AIR),
VMANIP_FLAG_DUNGEON_INSIDE);
make_fill(vmanip, p-dir, v3s16(1,2,1), 0, MapNode(CONTENT_AIR),
VMANIP_FLAG_DUNGEON_INSIDE);
}
else
{
make_fill(vmanip, p+v3s16(-1,-1,-1), v3s16(3,4,3),
VMANIP_FLAG_DUNGEON_UNTOUCHABLE, MapNode(LEGN(ndef, "CONTENT_COBBLE")), 0);
make_hole1(vmanip, p, ndef);
/*make_fill(vmanip, p, v3s16(1,2,1), 0, MapNode(CONTENT_AIR),
VMANIP_FLAG_DUNGEON_INSIDE);*/
}
p0 = p;
}
else
{
// Can't go here, turn away
dir = turn_xz(dir, random.range(0,1));
make_stairs = -make_stairs;
partcount = 0;
partlength = random.range(1,length);
continue;
}
partcount++;
if(partcount >= partlength)
{
partcount = 0;
dir = random_turn(random, dir);
partlength = random.range(1,length);
make_stairs = 0;
if(random.next()%2 == 0 && partlength >= 3)
make_stairs = random.next()%2 ? 1 : -1;
}
}
result_place = p0;
result_dir = dir;
}
class RoomWalker
{
public:
RoomWalker(VoxelManipulator &vmanip_, v3s16 pos, PseudoRandom &random,
INodeDefManager *ndef):
vmanip(vmanip_),
m_pos(pos),
m_random(random),
m_ndef(ndef)
{
randomizeDir();
}
void randomizeDir()
{
m_dir = rand_ortho_dir(m_random);
}
void setPos(v3s16 pos)
{
m_pos = pos;
}
void setDir(v3s16 dir)
{
m_dir = dir;
}
bool findPlaceForDoor(v3s16 &result_place, v3s16 &result_dir)
{
for(u32 i=0; i<100; i++)
{
v3s16 p = m_pos + m_dir;
v3s16 p1 = p + v3s16(0,1,0);
if(vmanip.m_area.contains(p) == false
|| vmanip.m_area.contains(p1) == false
|| i % 4 == 0)
{
randomizeDir();
continue;
}
if(vmanip.getNodeNoExNoEmerge(p).getContent()
== LEGN(m_ndef, "CONTENT_COBBLE")
&& vmanip.getNodeNoExNoEmerge(p1).getContent()
== LEGN(m_ndef, "CONTENT_COBBLE"))
{
// Found wall, this is a good place!
result_place = p;
result_dir = m_dir;
// Randomize next direction
randomizeDir();
return true;
}
/*
Determine where to move next
*/
// Jump one up if the actual space is there
if(vmanip.getNodeNoExNoEmerge(p+v3s16(0,0,0)).getContent()
== LEGN(m_ndef, "CONTENT_COBBLE")
&& vmanip.getNodeNoExNoEmerge(p+v3s16(0,1,0)).getContent()
== LEGN(m_ndef, "CONTENT_AIR")
&& vmanip.getNodeNoExNoEmerge(p+v3s16(0,2,0)).getContent()
== LEGN(m_ndef, "CONTENT_AIR"))
p += v3s16(0,1,0);
// Jump one down if the actual space is there
if(vmanip.getNodeNoExNoEmerge(p+v3s16(0,1,0)).getContent()
== LEGN(m_ndef, "CONTENT_COBBLE")
&& vmanip.getNodeNoExNoEmerge(p+v3s16(0,0,0)).getContent()
== LEGN(m_ndef, "CONTENT_AIR")
&& vmanip.getNodeNoExNoEmerge(p+v3s16(0,-1,0)).getContent()
== LEGN(m_ndef, "CONTENT_AIR"))
p += v3s16(0,-1,0);
// Check if walking is now possible
if(vmanip.getNodeNoExNoEmerge(p).getContent()
!= LEGN(m_ndef, "CONTENT_AIR")
|| vmanip.getNodeNoExNoEmerge(p+v3s16(0,1,0)).getContent()
!= LEGN(m_ndef, "CONTENT_AIR"))
{
// Cannot continue walking here
randomizeDir();
continue;
}
// Move there
m_pos = p;
}
return false;
}
bool findPlaceForRoomDoor(v3s16 roomsize, v3s16 &result_doorplace,
v3s16 &result_doordir, v3s16 &result_roomplace)
{
for(s16 trycount=0; trycount<30; trycount++)
{
v3s16 doorplace;
v3s16 doordir;
bool r = findPlaceForDoor(doorplace, doordir);
if(r == false)
continue;
v3s16 roomplace;
// X east, Z north, Y up
#if 1
if(doordir == v3s16(1,0,0)) // X+
roomplace = doorplace +
v3s16(0,-1,m_random.range(-roomsize.Z+2,-2));
if(doordir == v3s16(-1,0,0)) // X-
roomplace = doorplace +
v3s16(-roomsize.X+1,-1,m_random.range(-roomsize.Z+2,-2));
if(doordir == v3s16(0,0,1)) // Z+
roomplace = doorplace +
v3s16(m_random.range(-roomsize.X+2,-2),-1,0);
if(doordir == v3s16(0,0,-1)) // Z-
roomplace = doorplace +
v3s16(m_random.range(-roomsize.X+2,-2),-1,-roomsize.Z+1);
#endif
#if 0
if(doordir == v3s16(1,0,0)) // X+
roomplace = doorplace + v3s16(0,-1,-roomsize.Z/2);
if(doordir == v3s16(-1,0,0)) // X-
roomplace = doorplace + v3s16(-roomsize.X+1,-1,-roomsize.Z/2);
if(doordir == v3s16(0,0,1)) // Z+
roomplace = doorplace + v3s16(-roomsize.X/2,-1,0);
if(doordir == v3s16(0,0,-1)) // Z-
roomplace = doorplace + v3s16(-roomsize.X/2,-1,-roomsize.Z+1);
#endif
// Check fit
bool fits = true;
for(s16 z=1; z<roomsize.Z-1; z++)
for(s16 y=1; y<roomsize.Y-1; y++)
for(s16 x=1; x<roomsize.X-1; x++)
{
v3s16 p = roomplace + v3s16(x,y,z);
if(vmanip.m_area.contains(p) == false)
{
fits = false;
break;
}
if(vmanip.m_flags[vmanip.m_area.index(p)]
& VMANIP_FLAG_DUNGEON_INSIDE)
{
fits = false;
break;
}
}
if(fits == false)
{
// Find new place
continue;
}
result_doorplace = doorplace;
result_doordir = doordir;
result_roomplace = roomplace;
return true;
}
return false;
}
private:
VoxelManipulator &vmanip;
v3s16 m_pos;
v3s16 m_dir;
PseudoRandom &m_random;
INodeDefManager *m_ndef;
};
static void make_dungeon1(VoxelManipulator &vmanip, PseudoRandom &random,
INodeDefManager *ndef)
{
v3s16 areasize = vmanip.m_area.getExtent();
v3s16 roomsize;
v3s16 roomplace;
/*
Find place for first room
*/
bool fits = false;
for(u32 i=0; i<100; i++)
{
roomsize = v3s16(random.range(4,8),random.range(4,6),random.range(4,8));
roomplace = vmanip.m_area.MinEdge + v3s16(
random.range(0,areasize.X-roomsize.X-1),
random.range(0,areasize.Y-roomsize.Y-1),
random.range(0,areasize.Z-roomsize.Z-1));
/*
Check that we're not putting the room to an unknown place,
otherwise it might end up floating in the air
*/
fits = true;
for(s16 z=1; z<roomsize.Z-1; z++)
for(s16 y=1; y<roomsize.Y-1; y++)
for(s16 x=1; x<roomsize.X-1; x++)
{
v3s16 p = roomplace + v3s16(x,y,z);
u32 vi = vmanip.m_area.index(p);
if(vmanip.m_flags[vi] & VMANIP_FLAG_DUNGEON_INSIDE)
{
fits = false;
break;
}
if(vmanip.m_data[vi].getContent() == CONTENT_IGNORE)
{
fits = false;
break;
}
}
if(fits)
break;
}
// No place found
if(fits == false)
return;
/*
Stores the center position of the last room made, so that
a new corridor can be started from the last room instead of
the new room, if chosen so.
*/
v3s16 last_room_center = roomplace+v3s16(roomsize.X/2,1,roomsize.Z/2);
u32 room_count = random.range(2,7);
for(u32 i=0; i<room_count; i++)
{
// Make a room to the determined place
make_room1(vmanip, roomsize, roomplace, ndef);
v3s16 room_center = roomplace + v3s16(roomsize.X/2,1,roomsize.Z/2);
// Place torch at room center (for testing)
//vmanip.m_data[vmanip.m_area.index(room_center)] = MapNode(LEGN(ndef, "CONTENT_TORCH"));
// Quit if last room
if(i == room_count-1)
break;
// Determine walker start position
bool start_in_last_room = (random.range(0,2)!=0);
//bool start_in_last_room = true;
v3s16 walker_start_place;
if(start_in_last_room)
{
walker_start_place = last_room_center;
}
else
{
walker_start_place = room_center;
// Store center of current room as the last one
last_room_center = room_center;
}
// Create walker and find a place for a door
RoomWalker walker(vmanip, walker_start_place, random, ndef);
v3s16 doorplace;
v3s16 doordir;
bool r = walker.findPlaceForDoor(doorplace, doordir);
if(r == false)
return;
if(random.range(0,1)==0)
// Make the door
make_door1(vmanip, doorplace, doordir, ndef);
else
// Don't actually make a door
doorplace -= doordir;
// Make a random corridor starting from the door
v3s16 corridor_end;
v3s16 corridor_end_dir;
make_corridor(vmanip, doorplace, doordir, corridor_end,
corridor_end_dir, random, ndef);
// Find a place for a random sized room
roomsize = v3s16(random.range(4,8),random.range(4,6),random.range(4,8));
walker.setPos(corridor_end);
walker.setDir(corridor_end_dir);
r = walker.findPlaceForRoomDoor(roomsize, doorplace, doordir, roomplace);
if(r == false)
return;
if(random.range(0,1)==0)
// Make the door
make_door1(vmanip, doorplace, doordir, ndef);
else
// Don't actually make a door
roomplace -= doordir;
}
}
static void make_nc(VoxelManipulator &vmanip, PseudoRandom &random,
INodeDefManager *ndef)
{
v3s16 dir;
u8 facedir_i = 0;
s32 r = random.range(0, 3);
if(r == 0){
dir = v3s16( 1, 0, 0);
facedir_i = 3;
}
if(r == 1){
dir = v3s16(-1, 0, 0);
facedir_i = 1;
}
if(r == 2){
dir = v3s16( 0, 0, 1);
facedir_i = 2;
}
if(r == 3){
dir = v3s16( 0, 0,-1);
facedir_i = 0;
}
v3s16 p = vmanip.m_area.MinEdge + v3s16(
16+random.range(0,15),
16+random.range(0,15),
16+random.range(0,15));
vmanip.m_data[vmanip.m_area.index(p)] = MapNode(LEGN(ndef, "CONTENT_NC"), facedir_i);
u32 length = random.range(3,15);
for(u32 j=0; j<length; j++)
{
p -= dir;
vmanip.m_data[vmanip.m_area.index(p)] = MapNode(LEGN(ndef, "CONTENT_NC_RB"));
}
}
/*
Noise functions. Make sure seed is mangled differently in each one.
*/
/*
Scaling the output of the noise function affects the overdrive of the
contour function, which affects the shape of the output considerably.
*/
#define CAVE_NOISE_SCALE 12.0
//#define CAVE_NOISE_SCALE 10.0
//#define CAVE_NOISE_SCALE 7.5
//#define CAVE_NOISE_SCALE 5.0
//#define CAVE_NOISE_SCALE 1.0
//#define CAVE_NOISE_THRESHOLD (2.5/CAVE_NOISE_SCALE)
#define CAVE_NOISE_THRESHOLD (1.5/CAVE_NOISE_SCALE)
NoiseParams get_cave_noise1_params(u64 seed)
{
/*return NoiseParams(NOISE_PERLIN_CONTOUR, seed+52534, 5, 0.7,
200, CAVE_NOISE_SCALE);*/
/*return NoiseParams(NOISE_PERLIN_CONTOUR, seed+52534, 4, 0.7,
100, CAVE_NOISE_SCALE);*/
/*return NoiseParams(NOISE_PERLIN_CONTOUR, seed+52534, 5, 0.6,
100, CAVE_NOISE_SCALE);*/
/*return NoiseParams(NOISE_PERLIN_CONTOUR, seed+52534, 5, 0.3,
100, CAVE_NOISE_SCALE);*/
return NoiseParams(NOISE_PERLIN_CONTOUR, seed+52534, 4, 0.5,
50, CAVE_NOISE_SCALE);
//return NoiseParams(NOISE_CONSTANT_ONE);
}
NoiseParams get_cave_noise2_params(u64 seed)
{
/*return NoiseParams(NOISE_PERLIN_CONTOUR_FLIP_YZ, seed+10325, 5, 0.7,
200, CAVE_NOISE_SCALE);*/
/*return NoiseParams(NOISE_PERLIN_CONTOUR_FLIP_YZ, seed+10325, 4, 0.7,
100, CAVE_NOISE_SCALE);*/
/*return NoiseParams(NOISE_PERLIN_CONTOUR_FLIP_YZ, seed+10325, 5, 0.3,
100, CAVE_NOISE_SCALE);*/
return NoiseParams(NOISE_PERLIN_CONTOUR_FLIP_YZ, seed+10325, 4, 0.5,
50, CAVE_NOISE_SCALE);
//return NoiseParams(NOISE_CONSTANT_ONE);
}
NoiseParams get_ground_noise1_params(u64 seed)
{
return NoiseParams(NOISE_PERLIN, seed+983240, 4,
0.55, 80.0, 40.0);
}
NoiseParams get_ground_crumbleness_params(u64 seed)
{
return NoiseParams(NOISE_PERLIN, seed+34413, 3,
1.3, 20.0, 1.0);
}
NoiseParams get_ground_wetness_params(u64 seed)
{
return NoiseParams(NOISE_PERLIN, seed+32474, 4,
1.1, 40.0, 1.0);
}
bool is_cave(u64 seed, v3s16 p)
{
double d1 = noise3d_param(get_cave_noise1_params(seed), p.X,p.Y,p.Z);
double d2 = noise3d_param(get_cave_noise2_params(seed), p.X,p.Y,p.Z);
return d1*d2 > CAVE_NOISE_THRESHOLD;
}
/*
Ground density noise shall be interpreted by using this.
TODO: No perlin noises here, they should be outsourced
and buffered
NOTE: The speed of these actually isn't terrible
*/
bool val_is_ground(double ground_noise1_val, v3s16 p, u64 seed)
{
//return ((double)p.Y < ground_noise1_val);
double f = 0.55 + noise2d_perlin(
0.5+(float)p.X/250, 0.5+(float)p.Z/250,
seed+920381, 3, 0.45);
if(f < 0.01)
f = 0.01;
else if(f >= 1.0)
f *= 1.6;
double h = WATER_LEVEL + 10 * noise2d_perlin(
0.5+(float)p.X/250, 0.5+(float)p.Z/250,
seed+84174, 4, 0.5);
/*double f = 1;
double h = 0;*/
return ((double)p.Y - h < ground_noise1_val * f);
}
/*
Queries whether a position is ground or not.
*/
bool is_ground(u64 seed, v3s16 p)
{
double val1 = noise3d_param(get_ground_noise1_params(seed), p.X,p.Y,p.Z);
return val_is_ground(val1, p, seed);
}
// Amount of trees per area in nodes
double tree_amount_2d(u64 seed, v2s16 p)
{
/*double noise = noise2d_perlin(
0.5+(float)p.X/250, 0.5+(float)p.Y/250,
seed+2, 5, 0.66);*/
double noise = noise2d_perlin(
0.5+(float)p.X/125, 0.5+(float)p.Y/125,
seed+2, 4, 0.66);
double zeroval = -0.39;
if(noise < zeroval)
return 0;
else
return 0.04 * (noise-zeroval) / (1.0-zeroval);
}
double surface_humidity_2d(u64 seed, v2s16 p)
{
double noise = noise2d_perlin(
0.5+(float)p.X/500, 0.5+(float)p.Y/500,
seed+72384, 4, 0.66);
noise = (noise + 1.0)/2.0;
if(noise < 0.0)
noise = 0.0;
if(noise > 1.0)
noise = 1.0;
return noise;
}
#if 0
double randomstone_amount_2d(u64 seed, v2s16 p)
{
double noise = noise2d_perlin(
0.5+(float)p.X/250, 0.5+(float)p.Y/250,
seed+3829434, 5, 0.66);
double zeroval = 0.1;
if(noise < zeroval)
return 0;
else
return 0.01 * (noise-zeroval) / (1.0-zeroval);
}
#endif
double largestone_amount_2d(u64 seed, v2s16 p)
{
double noise = noise2d_perlin(
0.5+(float)p.X/250, 0.5+(float)p.Y/250,
seed+14143242, 5, 0.66);
double zeroval = 0.3;
if(noise < zeroval)
return 0;
else
return 0.005 * (noise-zeroval) / (1.0-zeroval);
}
/*
Incrementally find ground level from 3d noise
*/
s16 find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision)
{
// Start a bit fuzzy to make averaging lower precision values
// more useful
s16 level = myrand_range(-precision/2, precision/2);
s16 dec[] = {31000, 100, 20, 4, 1, 0};
s16 i;
for(i = 1; dec[i] != 0 && precision <= dec[i]; i++)
{
// First find non-ground by going upwards
// Don't stop in caves.
{
s16 max = level+dec[i-1]*2;
v3s16 p(p2d.X, level, p2d.Y);
for(; p.Y < max; p.Y += dec[i])
{
if(!is_ground(seed, p))
{
level = p.Y;
break;
}
}
}
// Then find ground by going downwards from there.
// Go in caves, too, when precision is 1.
{
s16 min = level-dec[i-1]*2;
v3s16 p(p2d.X, level, p2d.Y);
for(; p.Y>min; p.Y-=dec[i])
{
bool ground = is_ground(seed, p);
/*if(dec[i] == 1 && is_cave(seed, p))
ground = false;*/
if(ground)
{
level = p.Y;
break;
}
}
}
}
// This is more like the actual ground level
level += dec[i-1]/2;
return level;
}
double get_sector_average_ground_level(u64 seed, v2s16 sectorpos, double p=4);
double get_sector_average_ground_level(u64 seed, v2s16 sectorpos, double p)
{
v2s16 node_min = sectorpos*MAP_BLOCKSIZE;
v2s16 node_max = (sectorpos+v2s16(1,1))*MAP_BLOCKSIZE-v2s16(1,1);
double a = 0;
a += find_ground_level_from_noise(seed,
v2s16(node_min.X, node_min.Y), p);
a += find_ground_level_from_noise(seed,
v2s16(node_min.X, node_max.Y), p);
a += find_ground_level_from_noise(seed,
v2s16(node_max.X, node_max.Y), p);
a += find_ground_level_from_noise(seed,
v2s16(node_max.X, node_min.Y), p);
a += find_ground_level_from_noise(seed,
v2s16(node_min.X+MAP_BLOCKSIZE/2, node_min.Y+MAP_BLOCKSIZE/2), p);
a /= 5;
return a;
}
double get_sector_maximum_ground_level(u64 seed, v2s16 sectorpos, double p=4);
double get_sector_maximum_ground_level(u64 seed, v2s16 sectorpos, double p)
{
v2s16 node_min = sectorpos*MAP_BLOCKSIZE;
v2s16 node_max = (sectorpos+v2s16(1,1))*MAP_BLOCKSIZE-v2s16(1,1);
double a = -31000;
// Corners
a = MYMAX(a, find_ground_level_from_noise(seed,
v2s16(node_min.X, node_min.Y), p));
a = MYMAX(a, find_ground_level_from_noise(seed,
v2s16(node_min.X, node_max.Y), p));
a = MYMAX(a, find_ground_level_from_noise(seed,
v2s16(node_max.X, node_max.Y), p));
a = MYMAX(a, find_ground_level_from_noise(seed,
v2s16(node_min.X, node_min.Y), p));
// Center
a = MYMAX(a, find_ground_level_from_noise(seed,
v2s16(node_min.X+MAP_BLOCKSIZE/2, node_min.Y+MAP_BLOCKSIZE/2), p));
// Side middle points
a = MYMAX(a, find_ground_level_from_noise(seed,
v2s16(node_min.X+MAP_BLOCKSIZE/2, node_min.Y), p));
a = MYMAX(a, find_ground_level_from_noise(seed,
v2s16(node_min.X+MAP_BLOCKSIZE/2, node_max.Y), p));
a = MYMAX(a, find_ground_level_from_noise(seed,
v2s16(node_min.X, node_min.Y+MAP_BLOCKSIZE/2), p));
a = MYMAX(a, find_ground_level_from_noise(seed,
v2s16(node_max.X, node_min.Y+MAP_BLOCKSIZE/2), p));
return a;
}
double get_sector_minimum_ground_level(u64 seed, v2s16 sectorpos, double p=4);
double get_sector_minimum_ground_level(u64 seed, v2s16 sectorpos, double p)
{
v2s16 node_min = sectorpos*MAP_BLOCKSIZE;
v2s16 node_max = (sectorpos+v2s16(1,1))*MAP_BLOCKSIZE-v2s16(1,1);
double a = 31000;
// Corners
a = MYMIN(a, find_ground_level_from_noise(seed,
v2s16(node_min.X, node_min.Y), p));
a = MYMIN(a, find_ground_level_from_noise(seed,
v2s16(node_min.X, node_max.Y), p));
a = MYMIN(a, find_ground_level_from_noise(seed,
v2s16(node_max.X, node_max.Y), p));
a = MYMIN(a, find_ground_level_from_noise(seed,
v2s16(node_min.X, node_min.Y), p));
// Center
a = MYMIN(a, find_ground_level_from_noise(seed,
v2s16(node_min.X+MAP_BLOCKSIZE/2, node_min.Y+MAP_BLOCKSIZE/2), p));
// Side middle points
a = MYMIN(a, find_ground_level_from_noise(seed,
v2s16(node_min.X+MAP_BLOCKSIZE/2, node_min.Y), p));
a = MYMIN(a, find_ground_level_from_noise(seed,
v2s16(node_min.X+MAP_BLOCKSIZE/2, node_max.Y), p));
a = MYMIN(a, find_ground_level_from_noise(seed,
v2s16(node_min.X, node_min.Y+MAP_BLOCKSIZE/2), p));
a = MYMIN(a, find_ground_level_from_noise(seed,
v2s16(node_max.X, node_min.Y+MAP_BLOCKSIZE/2), p));
return a;
}
bool block_is_underground(u64 seed, v3s16 blockpos)
{
s16 minimum_groundlevel = (s16)get_sector_minimum_ground_level(
seed, v2s16(blockpos.X, blockpos.Z));
if(blockpos.Y*MAP_BLOCKSIZE + MAP_BLOCKSIZE <= minimum_groundlevel)
return true;
else
return false;
}
#if 0
#define AVERAGE_MUD_AMOUNT 4
double base_rock_level_2d(u64 seed, v2s16 p)
{
// The base ground level
double base = (double)WATER_LEVEL - (double)AVERAGE_MUD_AMOUNT
+ 20. * noise2d_perlin(
0.5+(float)p.X/500., 0.5+(float)p.Y/500.,
(seed>>32)+654879876, 6, 0.6);
/*// A bit hillier one
double base2 = WATER_LEVEL - 4.0 + 40. * noise2d_perlin(
0.5+(float)p.X/250., 0.5+(float)p.Y/250.,
(seed>>27)+90340, 6, 0.69);
if(base2 > base)
base = base2;*/
#if 1
// Higher ground level
double higher = (double)WATER_LEVEL + 25. + 35. * noise2d_perlin(
0.5+(float)p.X/250., 0.5+(float)p.Y/250.,
seed+85039, 5, 0.69);
//higher = 30; // For debugging
// Limit higher to at least base
if(higher < base)
higher = base;
// Steepness factor of cliffs
double b = 1.0 + 1.0 * noise2d_perlin(
0.5+(float)p.X/250., 0.5+(float)p.Y/250.,
seed-932, 7, 0.7);
b = rangelim(b, 0.0, 1000.0);
b = pow(b, 5);
b *= 7;
b = rangelim(b, 3.0, 1000.0);
//dstream<<"b="<<b<<std::endl;
//double b = 20;
// Offset to more low
double a_off = -0.2;
// High/low selector
/*double a = 0.5 + b * (a_off + noise2d_perlin(
0.5+(float)p.X/500., 0.5+(float)p.Y/500.,
seed-359, 6, 0.7));*/
double a = (double)0.5 + b * (a_off + noise2d_perlin(
0.5+(float)p.X/250., 0.5+(float)p.Y/250.,
seed-359, 5, 0.60));
// Limit
a = rangelim(a, 0.0, 1.0);
//dstream<<"a="<<a<<std::endl;
double h = base*(1.0-a) + higher*a;
#else
double h = base;
#endif
return h;
}
double get_mud_add_amount(u64 seed, v2s16 p)
{
return ((float)AVERAGE_MUD_AMOUNT + 3.0 * noise2d_perlin(
0.5+(float)p.X/200, 0.5+(float)p.Y/200,
seed+91013, 3, 0.55));
}
#endif
bool get_have_sand(u64 seed, v2s16 p2d)
{
// Determine whether to have sand here
double sandnoise = noise2d_perlin(
0.5+(float)p2d.X/500, 0.5+(float)p2d.Y/500,
seed+59420, 3, 0.50);
return (sandnoise > -0.15);
}
/*
Adds random objects to block, depending on the content of the block
*/
void add_random_objects(MapBlock *block)
{
#if 0
for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
{
bool last_node_walkable = false;
for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
{
v3s16 p(x0,y0,z0);
MapNode n = block->getNodeNoEx(p);
if(n.getContent() == CONTENT_IGNORE)
continue;
if(data->nodedef->get(n)->liquid_type != LIQUID_NONE)
continue;
if(data->nodedef->get(n)->walkable)
{
last_node_walkable = true;
continue;
}
if(last_node_walkable)
{
// If block contains light information
if(content_features(n).param_type == CPT_LIGHT)
{
if(n.getLight(LIGHTBANK_DAY) <= 3)
{
if(myrand() % 300 == 0)
{
v3f pos_f = intToFloat(p+block->getPosRelative(), BS);
pos_f.Y -= BS*0.4;
ServerActiveObject *obj = new RatSAO(NULL, 0, pos_f);
std::string data = obj->getStaticData();
StaticObject s_obj(obj->getType(),
obj->getBasePosition(), data);
// Add some
block->m_static_objects.insert(0, s_obj);
block->m_static_objects.insert(0, s_obj);
block->m_static_objects.insert(0, s_obj);
block->m_static_objects.insert(0, s_obj);
block->m_static_objects.insert(0, s_obj);
block->m_static_objects.insert(0, s_obj);
delete obj;
}
if(myrand() % 1000 == 0)
{
v3f pos_f = intToFloat(p+block->getPosRelative(), BS);
pos_f.Y -= BS*0.4;
ServerActiveObject *obj = new Oerkki1SAO(NULL,0,pos_f);
std::string data = obj->getStaticData();
StaticObject s_obj(obj->getType(),
obj->getBasePosition(), data);
// Add one
block->m_static_objects.insert(0, s_obj);
delete obj;
}
}
}
}
last_node_walkable = false;
}
}
block->raiseModified(MOD_STATE_WRITE_NEEDED, "mapgen::add_random_objects");
#endif
}
void make_block(BlockMakeData *data)
{
if(data->no_op)
{
//dstream<<"makeBlock: no-op"<<std::endl;
return;
}
assert(data->vmanip);
assert(data->nodedef);
INodeDefManager *ndef = data->nodedef;
v3s16 blockpos = data->blockpos;
/*dstream<<"makeBlock(): ("<<blockpos.X<<","<<blockpos.Y<<","
<<blockpos.Z<<")"<<std::endl;*/
ManualMapVoxelManipulator &vmanip = *(data->vmanip);
v3s16 blockpos_min = blockpos - v3s16(1,1,1);
v3s16 blockpos_max = blockpos + v3s16(1,1,1);
// Area of center block
v3s16 node_min = blockpos*MAP_BLOCKSIZE;
v3s16 node_max = (blockpos+v3s16(1,1,1))*MAP_BLOCKSIZE-v3s16(1,1,1);
// Full allocated area
v3s16 full_node_min = (blockpos-1)*MAP_BLOCKSIZE;
v3s16 full_node_max = (blockpos+2)*MAP_BLOCKSIZE-v3s16(1,1,1);
// Area of a block
double block_area_nodes = MAP_BLOCKSIZE*MAP_BLOCKSIZE;
v2s16 p2d_center(node_min.X+MAP_BLOCKSIZE/2, node_min.Z+MAP_BLOCKSIZE/2);
/*
Get average ground level from noise
*/
s16 approx_groundlevel = (s16)get_sector_average_ground_level(
data->seed, v2s16(blockpos.X, blockpos.Z));
//dstream<<"approx_groundlevel="<<approx_groundlevel<<std::endl;
s16 approx_ground_depth = approx_groundlevel - (node_min.Y+MAP_BLOCKSIZE/2);
s16 minimum_groundlevel = (s16)get_sector_minimum_ground_level(
data->seed, v2s16(blockpos.X, blockpos.Z));
// Minimum amount of ground above the top of the central block
s16 minimum_ground_depth = minimum_groundlevel - node_max.Y;
s16 maximum_groundlevel = (s16)get_sector_maximum_ground_level(
data->seed, v2s16(blockpos.X, blockpos.Z), 1);
// Maximum amount of ground above the bottom of the central block
s16 maximum_ground_depth = maximum_groundlevel - node_min.Y;
#if 1
/*
Special case for high air or water: Just fill with air and water.
*/
if(maximum_ground_depth < -20)
{
for(s16 x=node_min.X; x<=node_max.X; x++)
for(s16 z=node_min.Z; z<=node_max.Z; z++)
{
// Node position
v2s16 p2d(x,z);
{
// Use fast index incrementing
v3s16 em = vmanip.m_area.getExtent();
u32 i = vmanip.m_area.index(v3s16(p2d.X, node_min.Y, p2d.Y));
for(s16 y=node_min.Y; y<=node_max.Y; y++)
{
// Only modify places that have no content
if(vmanip.m_data[i].getContent() == CONTENT_IGNORE)
{
if(y <= WATER_LEVEL)
vmanip.m_data[i] = MapNode(LEGN(ndef, "CONTENT_WATERSOURCE"));
else
vmanip.m_data[i] = MapNode(CONTENT_AIR);
}
data->vmanip->m_area.add_y(em, i, 1);
}
}
}
// We're done
return;
}
#endif
/*
If block is deep underground, this is set to true and ground
density noise is not generated, for speed optimization.
*/
bool all_is_ground_except_caves = (minimum_ground_depth > 40);
/*
Create a block-specific seed
*/
u32 blockseed = (u32)(data->seed%0x100000000ULL) + full_node_min.Z*38134234
+ full_node_min.Y*42123 + full_node_min.X*23;
/*
Make some 3D noise
*/
//NoiseBuffer noisebuf1;
//NoiseBuffer noisebuf2;
NoiseBuffer noisebuf_cave;
NoiseBuffer noisebuf_ground;
NoiseBuffer noisebuf_ground_crumbleness;
NoiseBuffer noisebuf_ground_wetness;
{
v3f minpos_f(node_min.X, node_min.Y, node_min.Z);
v3f maxpos_f(node_max.X, node_max.Y, node_max.Z);
//TimeTaker timer("noisebuf.create");
/*
Cave noise
*/
#if 1
noisebuf_cave.create(get_cave_noise1_params(data->seed),
minpos_f.X, minpos_f.Y, minpos_f.Z,
maxpos_f.X, maxpos_f.Y, maxpos_f.Z,
2, 2, 2);
noisebuf_cave.multiply(get_cave_noise2_params(data->seed));
#endif
/*
Ground noise
*/
// Sample length
v3f sl = v3f(4.0, 4.0, 4.0);
/*
Density noise
*/
if(all_is_ground_except_caves == false)
//noisebuf_ground.create(data->seed+983240, 6, 0.60, false,
noisebuf_ground.create(get_ground_noise1_params(data->seed),
minpos_f.X, minpos_f.Y, minpos_f.Z,
maxpos_f.X, maxpos_f.Y, maxpos_f.Z,
sl.X, sl.Y, sl.Z);
/*
Ground property noise
*/
sl = v3f(2.5, 2.5, 2.5);
noisebuf_ground_crumbleness.create(
get_ground_crumbleness_params(data->seed),
minpos_f.X, minpos_f.Y, minpos_f.Z,
maxpos_f.X, maxpos_f.Y+5, maxpos_f.Z,
sl.X, sl.Y, sl.Z);
noisebuf_ground_wetness.create(
get_ground_wetness_params(data->seed),
minpos_f.X, minpos_f.Y, minpos_f.Z,
maxpos_f.X, maxpos_f.Y+5, maxpos_f.Z,
sl.X, sl.Y, sl.Z);
}
/*
Cache some ground type values for speed
*/
// Creates variables c_name=id and n_name=node
#define CONTENT_VARIABLE(ndef, name)\
content_t c_##name = ndef->getId(#name);\
MapNode n_##name(c_##name);
CONTENT_VARIABLE(ndef, stone);
CONTENT_VARIABLE(ndef, water_source);
CONTENT_VARIABLE(ndef, air);
CONTENT_VARIABLE(ndef, dirt);
CONTENT_VARIABLE(ndef, sand);
CONTENT_VARIABLE(ndef, gravel);
CONTENT_VARIABLE(ndef, lava_source);
CONTENT_VARIABLE(ndef, cobble);
CONTENT_VARIABLE(ndef, mossycobble);
CONTENT_VARIABLE(ndef, dirt_with_grass);
/*
Make base ground level
*/
for(s16 x=node_min.X; x<=node_max.X; x++)
for(s16 z=node_min.Z; z<=node_max.Z; z++)
{
// Node position
v2s16 p2d(x,z);
{
// Use fast index incrementing
v3s16 em = vmanip.m_area.getExtent();
u32 i = vmanip.m_area.index(v3s16(p2d.X, node_min.Y, p2d.Y));
for(s16 y=node_min.Y; y<=node_max.Y; y++)
{
// Only modify places that have no content
if(vmanip.m_data[i].getContent() == CONTENT_IGNORE)
{
// First priority: make air and water.
// This avoids caves inside water.
if(all_is_ground_except_caves == false
&& val_is_ground(noisebuf_ground.get(x,y,z),
v3s16(x,y,z), data->seed) == false)
{
if(y <= WATER_LEVEL)
vmanip.m_data[i] = n_water_source;
else
vmanip.m_data[i] = n_air;
}
else if(noisebuf_cave.get(x,y,z) > CAVE_NOISE_THRESHOLD)
vmanip.m_data[i] = n_air;
else
vmanip.m_data[i] = n_stone;
}
data->vmanip->m_area.add_y(em, i, 1);
}
}
}
/*
Add minerals
*/
{
PseudoRandom mineralrandom(blockseed);
/*
Add meseblocks
*/
for(s16 i=0; i<approx_ground_depth/4; i++)
{
if(mineralrandom.next()%50 == 0)
{
s16 x = mineralrandom.range(node_min.X+1, node_max.X-1);
s16 y = mineralrandom.range(node_min.Y+1, node_max.Y-1);
s16 z = mineralrandom.range(node_min.Z+1, node_max.Z-1);
for(u16 i=0; i<27; i++)
{
v3s16 p = v3s16(x,y,z) + g_27dirs[i];
u32 vi = vmanip.m_area.index(p);
if(vmanip.m_data[vi].getContent() == c_stone)
if(mineralrandom.next()%8 == 0)
vmanip.m_data[vi] = MapNode(LEGN(ndef, "CONTENT_MESE"));
}
}
}
/*
Add others
*/
{
u16 a = mineralrandom.range(0,15);
a = a*a*a;
u16 amount = 20 * a/1000;
for(s16 i=0; i<amount; i++)
{
s16 x = mineralrandom.range(node_min.X+1, node_max.X-1);
s16 y = mineralrandom.range(node_min.Y+1, node_max.Y-1);
s16 z = mineralrandom.range(node_min.Z+1, node_max.Z-1);
u8 base_content = LEGN(ndef, "CONTENT_STONE");
MapNode new_content(CONTENT_IGNORE);
u32 sparseness = 6;
if(noisebuf_ground_crumbleness.get(x,y+5,z) < -0.1)
{
new_content = MapNode(LEGN(ndef, "CONTENT_STONE"), MINERAL_COAL);
}
else
{
if(noisebuf_ground_wetness.get(x,y+5,z) > 0.0)
new_content = MapNode(LEGN(ndef, "CONTENT_STONE"), MINERAL_IRON);
/*if(noisebuf_ground_wetness.get(x,y,z) > 0.0)
vmanip.m_data[i] = MapNode(LEGN(ndef, "CONTENT_MUD"));
else
vmanip.m_data[i] = MapNode(LEGN(ndef, "CONTENT_SAND"));*/
}
/*else if(noisebuf_ground_crumbleness.get(x,y,z) > 0.1)
{
}*/
if(new_content.getContent() != CONTENT_IGNORE)
{
for(u16 i=0; i<27; i++)
{
v3s16 p = v3s16(x,y,z) + g_27dirs[i];
u32 vi = vmanip.m_area.index(p);
if(vmanip.m_data[vi].getContent() == base_content)
{
if(mineralrandom.next()%sparseness == 0)
vmanip.m_data[vi] = new_content;
}
}
}
}
}
/*
Add coal
*/
//for(s16 i=0; i < MYMAX(0, 50 - abs(node_min.Y+8 - (-30))); i++)
//for(s16 i=0; i<50; i++)
u16 coal_amount = 30;
u16 coal_rareness = 60 / coal_amount;
if(coal_rareness == 0)
coal_rareness = 1;
if(mineralrandom.next()%coal_rareness == 0)
{
u16 a = mineralrandom.next() % 16;
u16 amount = coal_amount * a*a*a / 1000;
for(s16 i=0; i<amount; i++)
{
s16 x = mineralrandom.range(node_min.X+1, node_max.X-1);
s16 y = mineralrandom.range(node_min.Y+1, node_max.Y-1);
s16 z = mineralrandom.range(node_min.Z+1, node_max.Z-1);
for(u16 i=0; i<27; i++)
{
v3s16 p = v3s16(x,y,z) + g_27dirs[i];
u32 vi = vmanip.m_area.index(p);
if(vmanip.m_data[vi].getContent() == c_stone)
if(mineralrandom.next()%8 == 0)
vmanip.m_data[vi] = MapNode(LEGN(ndef, "CONTENT_STONE"), MINERAL_COAL);
}
}
}
/*
Add iron
*/
u16 iron_amount = 8;
u16 iron_rareness = 60 / iron_amount;
if(iron_rareness == 0)
iron_rareness = 1;
if(mineralrandom.next()%iron_rareness == 0)
{
u16 a = mineralrandom.next() % 16;
u16 amount = iron_amount * a*a*a / 1000;
for(s16 i=0; i<amount; i++)
{
s16 x = mineralrandom.range(node_min.X+1, node_max.X-1);
s16 y = mineralrandom.range(node_min.Y+1, node_max.Y-1);
s16 z = mineralrandom.range(node_min.Z+1, node_max.Z-1);
for(u16 i=0; i<27; i++)
{
v3s16 p = v3s16(x,y,z) + g_27dirs[i];
u32 vi = vmanip.m_area.index(p);
if(vmanip.m_data[vi].getContent() == c_stone)
if(mineralrandom.next()%8 == 0)
vmanip.m_data[vi] = MapNode(LEGN(ndef, "CONTENT_STONE"), MINERAL_IRON);
}
}
}
}
/*
Add mud and sand and others underground (in place of stone)
*/
for(s16 x=node_min.X; x<=node_max.X; x++)
for(s16 z=node_min.Z; z<=node_max.Z; z++)
{
// Node position
v2s16 p2d(x,z);
{
// Use fast index incrementing
v3s16 em = vmanip.m_area.getExtent();
u32 i = vmanip.m_area.index(v3s16(p2d.X, node_max.Y, p2d.Y));
for(s16 y=node_max.Y; y>=node_min.Y; y--)
{
if(vmanip.m_data[i].getContent() == c_stone)
{
if(noisebuf_ground_crumbleness.get(x,y,z) > 1.3)
{
if(noisebuf_ground_wetness.get(x,y,z) > 0.0)
vmanip.m_data[i] = n_dirt;
else
vmanip.m_data[i] = n_sand;
}
else if(noisebuf_ground_crumbleness.get(x,y,z) > 0.7)
{
if(noisebuf_ground_wetness.get(x,y,z) < -0.6)
vmanip.m_data[i] = n_gravel;
}
else if(noisebuf_ground_crumbleness.get(x,y,z) <
-3.0 + MYMIN(0.1 * sqrt((float)MYMAX(0, -y)), 1.5))
{
vmanip.m_data[i] = n_lava_source;
for(s16 x1=-1; x1<=1; x1++)
for(s16 y1=-1; y1<=1; y1++)
for(s16 z1=-1; z1<=1; z1++)
data->transforming_liquid.push_back(
v3s16(p2d.X+x1, y+y1, p2d.Y+z1));
}
}
data->vmanip->m_area.add_y(em, i, -1);
}
}
}
/*
Add dungeons
*/
//if(node_min.Y < approx_groundlevel)
//if(myrand() % 3 == 0)
//if(myrand() % 3 == 0 && node_min.Y < approx_groundlevel)
//if(myrand() % 100 == 0 && node_min.Y < approx_groundlevel)
//float dungeon_rarity = g_settings.getFloat("dungeon_rarity");
float dungeon_rarity = 0.02;
if(((noise3d(blockpos.X,blockpos.Y,blockpos.Z,data->seed)+1.0)/2.0)
< dungeon_rarity
&& node_min.Y < approx_groundlevel)
{
// Dungeon generator doesn't modify places which have this set
data->vmanip->clearFlag(VMANIP_FLAG_DUNGEON_INSIDE
| VMANIP_FLAG_DUNGEON_PRESERVE);
// Set all air and water to be untouchable to make dungeons open
// to caves and open air
for(s16 x=full_node_min.X; x<=full_node_max.X; x++)
for(s16 z=full_node_min.Z; z<=full_node_max.Z; z++)
{
// Node position
v2s16 p2d(x,z);
{
// Use fast index incrementing
v3s16 em = vmanip.m_area.getExtent();
u32 i = vmanip.m_area.index(v3s16(p2d.X, full_node_max.Y, p2d.Y));
for(s16 y=full_node_max.Y; y>=full_node_min.Y; y--)
{
if(vmanip.m_data[i].getContent() == CONTENT_AIR)
vmanip.m_flags[i] |= VMANIP_FLAG_DUNGEON_PRESERVE;
else if(vmanip.m_data[i].getContent() == c_water_source)
vmanip.m_flags[i] |= VMANIP_FLAG_DUNGEON_PRESERVE;
data->vmanip->m_area.add_y(em, i, -1);
}
}
}
PseudoRandom random(blockseed+2);
// Add it
make_dungeon1(vmanip, random, ndef);
// Convert some cobble to mossy cobble
for(s16 x=full_node_min.X; x<=full_node_max.X; x++)
for(s16 z=full_node_min.Z; z<=full_node_max.Z; z++)
{
// Node position
v2s16 p2d(x,z);
{
// Use fast index incrementing
v3s16 em = vmanip.m_area.getExtent();
u32 i = vmanip.m_area.index(v3s16(p2d.X, full_node_max.Y, p2d.Y));
for(s16 y=full_node_max.Y; y>=full_node_min.Y; y--)
{
// (noisebuf not used because it doesn't contain the
// full area)
double wetness = noise3d_param(
get_ground_wetness_params(data->seed), x,y,z);
double d = noise3d_perlin((float)x/2.5,
(float)y/2.5,(float)z/2.5,
blockseed, 2, 1.4);
if(vmanip.m_data[i].getContent() == c_cobble)
{
if(d < wetness/3.0)
{
vmanip.m_data[i].setContent(c_mossycobble);
}
}
/*else if(vmanip.m_flags[i] & VMANIP_FLAG_DUNGEON_INSIDE)
{
if(wetness > 1.2)
vmanip.m_data[i].setContent(LEGN(ndef, "CONTENT_MUD"));
}*/
data->vmanip->m_area.add_y(em, i, -1);
}
}
}
}
/*
Add NC
*/
{
PseudoRandom ncrandom(blockseed+9324342);
if(ncrandom.range(0, 1000) == 0 && blockpos.Y <= -3)
{
make_nc(vmanip, ncrandom, ndef);
}
}
/*
Add top and bottom side of water to transforming_liquid queue
*/
for(s16 x=node_min.X; x<=node_max.X; x++)
for(s16 z=node_min.Z; z<=node_max.Z; z++)
{
// Node position
v2s16 p2d(x,z);
{
bool water_found = false;
// Use fast index incrementing
v3s16 em = vmanip.m_area.getExtent();
u32 i = vmanip.m_area.index(v3s16(p2d.X, node_max.Y, p2d.Y));
for(s16 y=node_max.Y; y>=node_min.Y; y--)
{
if(water_found == false)
{
if(vmanip.m_data[i].getContent() == c_water_source)
{
v3s16 p = v3s16(p2d.X, y, p2d.Y);
data->transforming_liquid.push_back(p);
water_found = true;
}
}
else
{
// This can be done because water_found can only
// turn to true and end up here after going through
// a single block.
if(vmanip.m_data[i+1].getContent() != c_water_source)
{
v3s16 p = v3s16(p2d.X, y+1, p2d.Y);
data->transforming_liquid.push_back(p);
water_found = false;
}
}
data->vmanip->m_area.add_y(em, i, -1);
}
}
}
/*
If close to ground level
*/
//if(abs(approx_ground_depth) < 30)
if(minimum_ground_depth < 5 && maximum_ground_depth > -5)
{
/*
Add grass and mud
*/
for(s16 x=node_min.X; x<=node_max.X; x++)
for(s16 z=node_min.Z; z<=node_max.Z; z++)
{
// Node position
v2s16 p2d(x,z);
{
bool possibly_have_sand = get_have_sand(data->seed, p2d);
bool have_sand = false;
u32 current_depth = 0;
bool air_detected = false;
bool water_detected = false;
bool have_clay = false;
// Use fast index incrementing
s16 start_y = node_max.Y+2;
v3s16 em = vmanip.m_area.getExtent();
u32 i = vmanip.m_area.index(v3s16(p2d.X, start_y, p2d.Y));
for(s16 y=start_y; y>=node_min.Y-3; y--)
{
if(vmanip.m_data[i].getContent() == c_water_source)
water_detected = true;
if(vmanip.m_data[i].getContent() == CONTENT_AIR)
air_detected = true;
if((vmanip.m_data[i].getContent() == c_stone
|| vmanip.m_data[i].getContent() == c_dirt_with_grass
|| vmanip.m_data[i].getContent() == c_dirt
|| vmanip.m_data[i].getContent() == c_sand
|| vmanip.m_data[i].getContent() == c_gravel
) && (air_detected || water_detected))
{
if(current_depth == 0 && y <= WATER_LEVEL+2
&& possibly_have_sand)
have_sand = true;
if(current_depth < 4)
{
if(have_sand)
{
// Determine whether to have clay in the sand here
double claynoise = noise2d_perlin(
0.5+(float)p2d.X/500, 0.5+(float)p2d.Y/500,
data->seed+4321, 6, 0.95) + 0.5;
have_clay = (y <= WATER_LEVEL) && (y >= WATER_LEVEL-2) && (
((claynoise > 0) && (claynoise < 0.04) && (current_depth == 0)) ||
((claynoise > 0) && (claynoise < 0.12) && (current_depth == 1))
);
if (have_clay)
vmanip.m_data[i] = MapNode(LEGN(ndef, "CONTENT_CLAY"));
else
vmanip.m_data[i] = MapNode(LEGN(ndef, "CONTENT_SAND"));
}
#if 1
else if(current_depth==0 && !water_detected
&& y >= WATER_LEVEL && air_detected)
vmanip.m_data[i] = MapNode(LEGN(ndef, "CONTENT_GRASS"));
#endif
else
vmanip.m_data[i] = MapNode(LEGN(ndef, "CONTENT_MUD"));
}
else
{
if(vmanip.m_data[i].getContent() == LEGN(ndef, "CONTENT_MUD")
|| vmanip.m_data[i].getContent() == LEGN(ndef, "CONTENT_GRASS"))
vmanip.m_data[i] = MapNode(LEGN(ndef, "CONTENT_STONE"));
}
current_depth++;
if(current_depth >= 8)
break;
}
else if(current_depth != 0)
break;
data->vmanip->m_area.add_y(em, i, -1);
}
}
}
/*
Calculate some stuff
*/
float surface_humidity = surface_humidity_2d(data->seed, p2d_center);
bool is_jungle = surface_humidity > 0.75;
// Amount of trees
u32 tree_count = block_area_nodes * tree_amount_2d(data->seed, p2d_center);
if(is_jungle)
tree_count *= 5;
/*
Add trees
*/
PseudoRandom treerandom(blockseed);
// Put trees in random places on part of division
for(u32 i=0; i<tree_count; i++)
{
s16 x = treerandom.range(node_min.X, node_max.X);
s16 z = treerandom.range(node_min.Z, node_max.Z);
//s16 y = find_ground_level(data->vmanip, v2s16(x,z));
s16 y = find_ground_level_from_noise(data->seed, v2s16(x,z), 4);
// Don't make a tree under water level
if(y < WATER_LEVEL)
continue;
// Make sure tree fits (only trees whose starting point is
// at this block are added)
if(y < node_min.Y || y > node_max.Y)
continue;
/*
Find exact ground level
*/
v3s16 p(x,y+6,z);
bool found = false;
for(; p.Y >= y-6; p.Y--)
{
u32 i = data->vmanip->m_area.index(p);
MapNode *n = &data->vmanip->m_data[i];
if(n->getContent() != CONTENT_AIR && n->getContent() != c_water_source && n->getContent() != CONTENT_IGNORE)
{
found = true;
break;
}
}
// If not found, handle next one
if(found == false)
continue;
{
u32 i = data->vmanip->m_area.index(p);
MapNode *n = &data->vmanip->m_data[i];
if(n->getContent() != c_dirt && n->getContent() != c_dirt_with_grass && n->getContent() != c_sand)
continue;
// Papyrus grows only on mud and in water
if(n->getContent() == c_dirt && y <= WATER_LEVEL)
{
p.Y++;
make_papyrus(vmanip, p, ndef);
}
// Trees grow only on mud and grass, on land
else if((n->getContent() == c_dirt || n->getContent() == LEGN(ndef, "CONTENT_GRASS")) && y > WATER_LEVEL + 2)
{
p.Y++;
//if(surface_humidity_2d(data->seed, v2s16(x, y)) < 0.5)
if(is_jungle == false)
{
bool is_apple_tree;
if(myrand_range(0,4) != 0)
is_apple_tree = false;
else
is_apple_tree = noise2d_perlin(
0.5+(float)p.X/100, 0.5+(float)p.Z/100,
data->seed+342902, 3, 0.45) > 0.2;
make_tree(vmanip, p, is_apple_tree, ndef);
}
else
make_jungletree(vmanip, p, ndef);
}
// Cactii grow only on sand, on land
else if(n->getContent() == c_sand && y > WATER_LEVEL + 2)
{
p.Y++;
make_cactus(vmanip, p, ndef);
}
}
}
/*
Add jungle grass
*/
if(is_jungle)
{
PseudoRandom grassrandom(blockseed);
for(u32 i=0; i<surface_humidity*5*tree_count; i++)
{
s16 x = grassrandom.range(node_min.X, node_max.X);
s16 z = grassrandom.range(node_min.Z, node_max.Z);
s16 y = find_ground_level_from_noise(data->seed, v2s16(x,z), 4);
if(y < WATER_LEVEL)
continue;
if(y < node_min.Y || y > node_max.Y)
continue;
/*
Find exact ground level
*/
v3s16 p(x,y+6,z);
bool found = false;
for(; p.Y >= y-6; p.Y--)
{
u32 i = data->vmanip->m_area.index(p);
MapNode *n = &data->vmanip->m_data[i];
if(data->nodedef->get(*n).is_ground_content
|| n->getContent() == LEGN(ndef, "CONTENT_JUNGLETREE"))
{
found = true;
break;
}
}
// If not found, handle next one
if(found == false)
continue;
p.Y++;
if(vmanip.m_area.contains(p) == false)
continue;
if(vmanip.m_data[vmanip.m_area.index(p)].getContent() != CONTENT_AIR)
continue;
/*p.Y--;
if(vmanip.m_area.contains(p))
vmanip.m_data[vmanip.m_area.index(p)] = LEGN(ndef, "CONTENT_MUD");
p.Y++;*/
if(vmanip.m_area.contains(p))
vmanip.m_data[vmanip.m_area.index(p)] = LEGN(ndef, "CONTENT_JUNGLEGRASS");
}
}
#if 0
/*
Add some kind of random stones
*/
u32 random_stone_count = block_area_nodes *
randomstone_amount_2d(data->seed, p2d_center);
// Put in random places on part of division
for(u32 i=0; i<random_stone_count; i++)
{
s16 x = myrand_range(node_min.X, node_max.X);
s16 z = myrand_range(node_min.Z, node_max.Z);
s16 y = find_ground_level_from_noise(data->seed, v2s16(x,z), 1);
// Don't add under water level
/*if(y < WATER_LEVEL)
continue;*/
// Don't add if doesn't belong to this block
if(y < node_min.Y || y > node_max.Y)
continue;
v3s16 p(x,y,z);
// Filter placement
/*{
u32 i = data->vmanip->m_area.index(v3s16(p));
MapNode *n = &data->vmanip->m_data[i];
if(n->getContent() != LEGN(ndef, "CONTENT_MUD") && n->getContent() != LEGN(ndef, "CONTENT_GRASS"))
continue;
}*/
// Will be placed one higher
p.Y++;
// Add it
make_randomstone(data->vmanip, p);
}
#endif
#if 0
/*
Add larger stones
*/
u32 large_stone_count = block_area_nodes *
largestone_amount_2d(data->seed, p2d_center);
//u32 large_stone_count = 1;
// Put in random places on part of division
for(u32 i=0; i<large_stone_count; i++)
{
s16 x = myrand_range(node_min.X, node_max.X);
s16 z = myrand_range(node_min.Z, node_max.Z);
s16 y = find_ground_level_from_noise(data->seed, v2s16(x,z), 1);
// Don't add under water level
/*if(y < WATER_LEVEL)
continue;*/
// Don't add if doesn't belong to this block
if(y < node_min.Y || y > node_max.Y)
continue;
v3s16 p(x,y,z);
// Filter placement
/*{
u32 i = data->vmanip->m_area.index(v3s16(p));
MapNode *n = &data->vmanip->m_data[i];
if(n->getContent() != LEGN(ndef, "CONTENT_MUD") && n->getContent() != LEGN(ndef, "CONTENT_GRASS"))
continue;
}*/
// Will be placed one lower
p.Y--;
// Add it
make_largestone(data->vmanip, p);
}
#endif
}
}
BlockMakeData::BlockMakeData():
no_op(false),
vmanip(NULL),
seed(0),
nodedef(NULL)
{}
BlockMakeData::~BlockMakeData()
{
delete vmanip;
}
}; // namespace mapgen
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