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Some completely crapshit coding to make caves more varied

This commit is contained in:
Perttu Ahola 2012-04-01 20:54:36 +03:00
parent f0e7da8a63
commit bee1adc651
1 changed files with 146 additions and 96 deletions
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208
src/mapgen.cpp
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@ -61,10 +61,13 @@ static s16 find_ground_level(VoxelManipulator &vmanip, v2s16 p2d,
return y_nodes_min - 1; return y_nodes_min - 1;
} }
#if 0
// Returns Y one under area minimum if not found // Returns Y one under area minimum if not found
static s16 find_ground_level_clever(VoxelManipulator &vmanip, v2s16 p2d, static s16 find_ground_level_clever(VoxelManipulator &vmanip, v2s16 p2d,
INodeDefManager *ndef) INodeDefManager *ndef)
{ {
if(!vmanip.m_area.contains(v3s16(p2d.X, vmanip.m_area.MaxEdge.Y, p2d.Y)))
return vmanip.m_area.MinEdge.Y-1;
v3s16 em = vmanip.m_area.getExtent(); v3s16 em = vmanip.m_area.getExtent();
s16 y_nodes_max = vmanip.m_area.MaxEdge.Y; s16 y_nodes_max = vmanip.m_area.MaxEdge.Y;
s16 y_nodes_min = vmanip.m_area.MinEdge.Y; s16 y_nodes_min = vmanip.m_area.MinEdge.Y;
@ -87,6 +90,7 @@ static s16 find_ground_level_clever(VoxelManipulator &vmanip, v2s16 p2d,
else else
return y_nodes_min - 1; return y_nodes_min - 1;
} }
#endif
// Returns Y one under area minimum if not found // Returns Y one under area minimum if not found
static s16 find_stone_level(VoxelManipulator &vmanip, v2s16 p2d, static s16 find_stone_level(VoxelManipulator &vmanip, v2s16 p2d,
@ -1444,42 +1448,6 @@ void make_block(BlockMakeData *data)
}//timer1 }//timer1
/*
Add blobs of dirt and gravel underground
*/
{
PseudoRandom pr(blockseed+983);
for(int i=0; i<volume_nodes/12/12/12; i++){
v3s16 size(
pr.range(1, 6),
pr.range(1, 6),
pr.range(1, 6)
);
v3s16 p0(
pr.range(node_min.X, node_max.X)-size.X/2,
pr.range(node_min.Y, node_max.Y)-size.Y/2,
pr.range(node_min.Z, node_max.Z)-size.Z/2
);
MapNode n1;
if(p0.Y > -32 && pr.range(0,1) == 0)
n1 = MapNode(c_dirt);
else
n1 = MapNode(c_gravel);
for(int x1=0; x1<size.X; x1++)
for(int y1=0; y1<size.Y; y1++)
for(int z1=0; z1<size.Z; z1++)
{
v3s16 p = p0 + v3s16(x1,y1,z1);
u32 i = vmanip.m_area.index(p);
if(!vmanip.m_area.contains(i))
continue;
if(vmanip.m_data[i].getContent() != c_stone)
continue;
vmanip.m_data[i] = n1;
}
}
}
// Limit dirt flow area by 1 because mud is flown into neighbors. // Limit dirt flow area by 1 because mud is flown into neighbors.
assert(central_area_size.X == central_area_size.Z); assert(central_area_size.X == central_area_size.Z);
s16 mudflow_minpos = 0-max_spread_amount+1; s16 mudflow_minpos = 0-max_spread_amount+1;
@ -1504,15 +1472,22 @@ void make_block(BlockMakeData *data)
/* /*
Make caves (this code is relatively horrible) Make caves (this code is relatively horrible)
*/ */
u32 caves_count = volume_nodes / 100000 + 1; double cave_amount = noise2d_perlin(
u32 bruises_count = volume_nodes * stone_surface_max_y / 40000000; 0.5+(double)node_min.X/250, 0.5+(double)node_min.Y/250,
data->seed+34329, 3, 0.50);
cave_amount = MYMAX(0.0, 4.0*cave_amount+2.0);
u32 caves_count = cave_amount * volume_nodes / 100000;
u32 bruises_count = cave_amount * volume_nodes / 400000;
bruises_count *= MYMAX(1, -node_max.Y/100);
if(stone_surface_max_y < WATER_LEVEL - 20) if(stone_surface_max_y < WATER_LEVEL - 20)
bruises_count = 0; bruises_count = 0;
for(u32 jj=0; jj<caves_count+bruises_count; jj++) for(u32 jj=0; jj<caves_count+bruises_count; jj++)
{ {
s16 min_tunnel_diameter = 2; s16 min_tunnel_diameter = 2;
s16 max_tunnel_diameter = myrand_range(4,5); s16 max_tunnel_diameter = myrand_range(3,5);
u16 tunnel_routepoints = 20; u16 tunnel_routepoints = myrand_range(5,25);
int dswitchint = myrand_range(1,14);
int part_max_length_rs = myrand_range(2,11);
v3f main_direction(0,0,0); v3f main_direction(0,0,0);
@ -1521,7 +1496,7 @@ void make_block(BlockMakeData *data)
if(bruise_surface) if(bruise_surface)
{ {
min_tunnel_diameter = 5; min_tunnel_diameter = 5;
max_tunnel_diameter = myrand_range(10, myrand_range(30,50)); max_tunnel_diameter = myrand_range(10, myrand_range(20,40));
/*min_tunnel_diameter = MYMAX(0, stone_surface_max_y/6); /*min_tunnel_diameter = MYMAX(0, stone_surface_max_y/6);
max_tunnel_diameter = myrand_range(MYMAX(0, stone_surface_max_y/6), MYMAX(0, stone_surface_max_y/2));*/ max_tunnel_diameter = myrand_range(MYMAX(0, stone_surface_max_y/6), MYMAX(0, stone_surface_max_y/2));*/
@ -1566,7 +1541,8 @@ void make_block(BlockMakeData *data)
// Minimum is at y=max_tunnel_diameter/4 // Minimum is at y=max_tunnel_diameter/4
//route_y_min = -of.Y + max_tunnel_diameter/4; //route_y_min = -of.Y + max_tunnel_diameter/4;
//s16 min = -of.Y + max_tunnel_diameter/4; //s16 min = -of.Y + max_tunnel_diameter/4;
s16 min = -of.Y + 0; //s16 min = -of.Y + 0;
s16 min = 0;
route_y_min = myrand_range(min, min + max_tunnel_diameter); route_y_min = myrand_range(min, min + max_tunnel_diameter);
route_y_min = rangelim(route_y_min, 0, route_y_max); route_y_min = rangelim(route_y_min, 0, route_y_max);
} }
@ -1578,12 +1554,12 @@ void make_block(BlockMakeData *data)
s16 route_start_y_max = route_y_max; s16 route_start_y_max = route_y_max;
// Start every 4th cave from surface when applicable // Start every 4th cave from surface when applicable
bool coming_from_surface = false; /*bool coming_from_surface = false;
if(node_min.Y <= 0 && node_max.Y >= 0){ if(node_min.Y <= 0 && node_max.Y >= 0){
coming_from_surface = (jj % 4 == 0 && bruise_surface == false); coming_from_surface = (jj % 4 == 0 && bruise_surface == false);
if(coming_from_surface) if(coming_from_surface)
route_start_y_min = -of.Y + stone_surface_max_y + 10; route_start_y_min = -of.Y + stone_surface_max_y + 10;
} }*/
route_start_y_min = rangelim(route_start_y_min, 0, ar.Y-1); route_start_y_min = rangelim(route_start_y_min, 0, ar.Y-1);
route_start_y_max = rangelim(route_start_y_max, route_start_y_min, ar.Y-1); route_start_y_max = rangelim(route_start_y_max, route_start_y_min, ar.Y-1);
@ -1595,8 +1571,12 @@ void make_block(BlockMakeData *data)
(float)(myrand()%ar.Z)+0.5 (float)(myrand()%ar.Z)+0.5
); );
v3s16 startp(orp.X, orp.Y, orp.Z);
startp += of;
MapNode airnode(CONTENT_AIR); MapNode airnode(CONTENT_AIR);
MapNode waternode(c_water_source); MapNode waternode(c_water_source);
MapNode lavanode(c_lava_source);
/* /*
Generate some tunnel starting from orp Generate some tunnel starting from orp
@ -1604,14 +1584,14 @@ void make_block(BlockMakeData *data)
for(u16 j=0; j<tunnel_routepoints; j++) for(u16 j=0; j<tunnel_routepoints; j++)
{ {
if(j%7==0 && bruise_surface == false) if(j%dswitchint==0 && bruise_surface == false)
{ {
main_direction = v3f( main_direction = v3f(
((float)(myrand()%20)-(float)10)/10, ((float)(myrand()%20)-(float)10)/10,
((float)(myrand()%20)-(float)10)/30, ((float)(myrand()%20)-(float)10)/30,
((float)(myrand()%20)-(float)10)/10 ((float)(myrand()%20)-(float)10)/10
); );
main_direction *= (float)myrand_range(1, 3); main_direction *= (float)myrand_range(0, 10)/10;
} }
// Randomize size // Randomize size
@ -1622,39 +1602,38 @@ void make_block(BlockMakeData *data)
v3s16 maxlen; v3s16 maxlen;
if(bruise_surface) if(bruise_surface)
{ {
maxlen = v3s16(rs*7,rs*2,rs*7); maxlen = v3s16(rs*part_max_length_rs,rs*part_max_length_rs/3,rs*part_max_length_rs);
} }
else else
{ {
maxlen = v3s16(rs*4, myrand_range(1, rs*3), rs*4); maxlen = v3s16(rs*part_max_length_rs, myrand_range(1, rs*part_max_length_rs), rs*part_max_length_rs);
} }
v3f vec; v3f vec;
if(coming_from_surface && j < 3)
{
vec = v3f( vec = v3f(
(float)(myrand()%(maxlen.X*2))-(float)maxlen.X, (float)(myrand()%(maxlen.X*1))-(float)maxlen.X/2,
(float)(myrand()%(maxlen.Y*1))-(float)maxlen.Y, (float)(myrand()%(maxlen.Y*1))-(float)maxlen.Y/2,
(float)(myrand()%(maxlen.Z*2))-(float)maxlen.Z (float)(myrand()%(maxlen.Z*1))-(float)maxlen.Z/2
); );
}
else // Jump downward sometimes
if(!bruise_surface && myrand_range(0,12) == 0)
{ {
vec = v3f( vec = v3f(
(float)(myrand()%(maxlen.X*2))-(float)maxlen.X, (float)(myrand()%(maxlen.X*1))-(float)maxlen.X/2,
(float)(myrand()%(maxlen.Y*2))-(float)maxlen.Y, (float)(myrand()%(maxlen.Y*2))-(float)maxlen.Y*2/2,
(float)(myrand()%(maxlen.Z*2))-(float)maxlen.Z (float)(myrand()%(maxlen.Z*1))-(float)maxlen.Z/2
); );
} }
if(bruise_surface){ /*if(bruise_surface){
v3f p = orp + vec; v3f p = orp + vec;
s16 h = find_ground_level_clever(vmanip, s16 h = find_ground_level_clever(vmanip,
v2s16(p.X, p.Z), ndef); v2s16(p.X, p.Z), ndef);
route_y_min = h - rs/3; route_y_min = h - rs/3;
route_y_max = h + rs; route_y_max = h + rs;
} }*/
vec += main_direction; vec += main_direction;
@ -1684,7 +1663,7 @@ void make_block(BlockMakeData *data)
s16 d1 = d0 + rs - 1; s16 d1 = d0 + rs - 1;
for(s16 z0=d0; z0<=d1; z0++) for(s16 z0=d0; z0<=d1; z0++)
{ {
s16 si = rs - MYMAX(0, abs(z0)-rs/4); s16 si = rs - MYMAX(0, abs(z0)-rs/7);
//s16 si = rs - MYMAX(0, abs(z0)-rs/7); //s16 si = rs - MYMAX(0, abs(z0)-rs/7);
for(s16 x0=-si; x0<=si-1; x0++) for(s16 x0=-si; x0<=si-1; x0++)
{ {
@ -1694,9 +1673,10 @@ void make_block(BlockMakeData *data)
//s16 si2 = rs - abs(x0); //s16 si2 = rs - abs(x0);
for(s16 y0=-si2; y0<=si2-1; y0++) for(s16 y0=-si2; y0<=si2-1; y0++)
{ {
// Make better floors // Make better floors in small caves
if(y0 < -rs + 1 && abs(x0)<=1 && abs(z0)<=1) if(y0 < -rs + 1 && si<=7)
continue; continue;
bool is_bottomish = (y0 <= -si2 + 1);
s16 z = cp.Z + z0; s16 z = cp.Z + z0;
s16 y = cp.Y + y0; s16 y = cp.Y + y0;
@ -1709,27 +1689,39 @@ void make_block(BlockMakeData *data)
continue; continue;
p += of; p += of;
//assert(vmanip.m_area.contains(p));
if(vmanip.m_area.contains(p) == false) if(vmanip.m_area.contains(p) == false)
{
dstream<<"WARNING: "<<__FUNCTION_NAME
<<":"<<__LINE__<<": "
<<"point not in area"
<<std::endl;
continue; continue;
}
// Just set it to air, it will be changed to // Just set it to air, it will be changed to
// water afterwards // water afterwards
u32 i = vmanip.m_area.index(p); u32 i = vmanip.m_area.index(p);
if(bruise_surface){
if(bruise_surface)
{
if(full_node_min.Y < WATER_LEVEL &&
full_node_max.Y > WATER_LEVEL){
if(p.Y <= WATER_LEVEL) if(p.Y <= WATER_LEVEL)
vmanip.m_data[i] = waternode; vmanip.m_data[i] = waternode;
else else
vmanip.m_data[i] = airnode; vmanip.m_data[i] = airnode;
} else if(full_node_max.Y < WATER_LEVEL){
if(is_bottomish)
vmanip.m_data[i] = MapNode(c_stone);
else if(p.Y < startp.Y - 2)
vmanip.m_data[i] = lavanode;
else
vmanip.m_data[i] = airnode;
} else { } else {
vmanip.m_data[i] = airnode; vmanip.m_data[i] = airnode;
} }
} else {
// Don't replace air or water or lava
if(vmanip.m_data[i].getContent() == CONTENT_AIR ||
vmanip.m_data[i].getContent() == c_water_source ||
vmanip.m_data[i].getContent() == c_lava_source)
continue;
vmanip.m_data[i] = airnode;
}
if(bruise_surface == false) if(bruise_surface == false)
{ {
@ -1821,6 +1813,48 @@ void make_block(BlockMakeData *data)
}//timer1 }//timer1
#endif #endif
/*
Add blobs of dirt and gravel underground
*/
{
PseudoRandom pr(blockseed+983);
for(int i=0; i<volume_nodes/10/10/10; i++)
{
bool only_fill_cave = (myrand_range(0,1) != 0);
v3s16 size(
pr.range(1, 8),
pr.range(1, 8),
pr.range(1, 8)
);
v3s16 p0(
pr.range(node_min.X, node_max.X)-size.X/2,
pr.range(node_min.Y, node_max.Y)-size.Y/2,
pr.range(node_min.Z, node_max.Z)-size.Z/2
);
MapNode n1;
if(p0.Y > -32 && pr.range(0,1) == 0)
n1 = MapNode(c_dirt);
else
n1 = MapNode(c_gravel);
for(int x1=0; x1<size.X; x1++)
for(int y1=0; y1<size.Y; y1++)
for(int z1=0; z1<size.Z; z1++)
{
v3s16 p = p0 + v3s16(x1,y1,z1);
u32 i = vmanip.m_area.index(p);
if(!vmanip.m_area.contains(i))
continue;
// Cancel if not stone and not cave air
if(vmanip.m_data[i].getContent() != c_stone &&
!(vmanip.m_flags[i] & VMANIP_FLAG_CAVE))
continue;
if(only_fill_cave && !(vmanip.m_flags[i] & VMANIP_FLAG_CAVE))
continue;
vmanip.m_data[i] = n1;
}
}
}
#if 1 #if 1
{ {
// 340ms @cs=8 // 340ms @cs=8
@ -1861,7 +1895,8 @@ void make_block(BlockMakeData *data)
//if(content_walkable(n->d)) //if(content_walkable(n->d))
// break; // break;
if(n->getContent() == c_dirt || if(n->getContent() == c_dirt ||
n->getContent() == c_dirt_with_grass) n->getContent() == c_dirt_with_grass ||
n->getContent() == c_gravel)
break; break;
vmanip.m_area.add_y(em, i, -1); vmanip.m_area.add_y(em, i, -1);
@ -1877,6 +1912,12 @@ void make_block(BlockMakeData *data)
if(n->d != CONTENT_MUD && n->d != CONTENT_GRASS) if(n->d != CONTENT_MUD && n->d != CONTENT_GRASS)
continue;*/ continue;*/
if(n->getContent() == c_dirt ||
n->getContent() == c_dirt_with_grass)
{
// Make it exactly mud
n->setContent(c_dirt);
/* /*
Don't flow it if the stuff under it is not mud Don't flow it if the stuff under it is not mud
*/ */
@ -1891,9 +1932,7 @@ void make_block(BlockMakeData *data)
n2->getContent() != c_dirt_with_grass) n2->getContent() != c_dirt_with_grass)
continue; continue;
} }
}
// Make it exactly mud
n->setContent(c_dirt);
/*s16 recurse_count = 0; /*s16 recurse_count = 0;
mudflow_recurse:*/ mudflow_recurse:*/
@ -2002,9 +2041,15 @@ void make_block(BlockMakeData *data)
u32 i = vmanip.m_area.index(v3s16(p2d.X, full_node_max.Y, p2d.Y)); 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--) for(s16 y=full_node_max.Y; y>=full_node_min.Y; y--)
{ {
if(water_found == false) if(y == full_node_max.Y){
water_found =
(vmanip.m_data[i].getContent() == c_water_source ||
vmanip.m_data[i].getContent() == c_lava_source);
}
else if(water_found == false)
{ {
if(vmanip.m_data[i].getContent() == c_water_source) if(vmanip.m_data[i].getContent() == c_water_source ||
vmanip.m_data[i].getContent() == c_lava_source)
{ {
v3s16 p = v3s16(p2d.X, y, p2d.Y); v3s16 p = v3s16(p2d.X, y, p2d.Y);
data->transforming_liquid.push_back(p); data->transforming_liquid.push_back(p);
@ -2016,7 +2061,8 @@ void make_block(BlockMakeData *data)
// This can be done because water_found can only // This can be done because water_found can only
// turn to true and end up here after going through // turn to true and end up here after going through
// a single block. // a single block.
if(vmanip.m_data[i+1].getContent() != c_water_source) if(vmanip.m_data[i+1].getContent() != c_water_source ||
vmanip.m_data[i+1].getContent() != c_lava_source)
{ {
v3s16 p = v3s16(p2d.X, y+1, p2d.Y); v3s16 p = v3s16(p2d.X, y+1, p2d.Y);
data->transforming_liquid.push_back(p); data->transforming_liquid.push_back(p);
@ -2067,9 +2113,13 @@ void make_block(BlockMakeData *data)
u32 i = vmanip.m_area.index(p2d.X, surface_y, p2d.Y); u32 i = vmanip.m_area.index(p2d.X, surface_y, p2d.Y);
MapNode *n = &vmanip.m_data[i]; MapNode *n = &vmanip.m_data[i];
if(n->getContent() == c_dirt) if(n->getContent() == c_dirt){
// Well yeah, this can't be overground...
if(surface_y < WATER_LEVEL - 20)
continue;
n->setContent(c_dirt_with_grass); n->setContent(c_dirt_with_grass);
} }
}
/* /*
Generate some trees Generate some trees