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new adjustable finite liquid

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This commit is contained in:
proller 2013-02-24 18:39:07 +04:00
parent 9bd76f2972
commit b90e431fc7
10 changed files with 384 additions and 8 deletions
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10
games/minimal/mods/default/mapgen.lua
View File

@ -27,7 +27,7 @@ minetest.register_alias("mapgen_mese", "default:mese")
-- Ore generation
--
local function generate_ore(name, wherein, minp, maxp, seed, chunks_per_volume, ore_per_chunk, height_min, height_max)
local function generate_ore(name, wherein, minp, maxp, seed, chunks_per_volume, ore_per_chunk, height_min, height_max, param2)
if maxp.y < height_min or minp.y > height_max then
return
end
@ -57,7 +57,7 @@ local function generate_ore(name, wherein, minp, maxp, seed, chunks_per_volume,
local z2 = z0+z1
local p2 = {x=x2, y=y2, z=z2}
if minetest.env:get_node(p2).name == wherein then
minetest.env:set_node(p2, {name=name})
minetest.env:set_node(p2, {name=name, param2=param2})
end
end
end
@ -110,5 +110,11 @@ minetest.register_on_generated(function(minp, maxp, seed)
end
end
end
if minetest.setting_get("liquid_finite") then
generate_ore("default:water_source", "default:stone", minp, maxp, seed+42, 1/24/24/24, 4, -100, -10, 128)
generate_ore("default:water_source", "default:stone", minp, maxp, seed+42, 1/28/28/28, 3, -10000, -101, 128)
generate_ore("default:lava_source", "default:stone", minp, maxp, seed+43, 1/38/38/38, 2, -500, -100, 128)
generate_ore("default:lava_source", "default:stone", minp, maxp, seed+43, 1/30/30/30, 4, -31000, -501, 128)
end
end)

8
minetest.conf.example
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@ -90,6 +90,14 @@
#enable_fog = true
# Enable a bit lower water surface; disable for speed (not quite optimized)
#new_style_water = false
# Constant volume liquids
#liquid_finite = false
# Update liquids every .. recommend for finite: 0.2
#liquid_update = 1.0
# When finite liquid: relax flowing blocks to source if level near max and N nearby source blocks, more realistic, but not true constant. values: 0,1,2,3,4 : 0 - disable, 1 - most aggresive
#liquid_relax = 1
# optimization: faster cave flood (and not true constant)
#liquid_fast_flood = 1
# Enable nice leaves; disable for speed
#new_style_leaves = true
# Enable smooth lighting with simple ambient occlusion;

36
src/content_abm.cpp
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@ -26,6 +26,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "settings.h"
#include "mapblock.h" // For getNodeBlockPos
#include "treegen.h" // For treegen::make_tree
#include "main.h" // for g_settings
#include "map.h"
#define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
@ -146,11 +147,42 @@ public:
}
};
class LiquidFlowABM : public ActiveBlockModifier
{
private:
std::set<std::string> contents;
public:
LiquidFlowABM(ServerEnvironment *env, INodeDefManager *nodemgr)
{
std::set<content_t> liquids;
nodemgr->getIds("group:liquid", liquids);
for(std::set<content_t>::const_iterator k = liquids.begin(); k != liquids.end(); k++)
contents.insert(nodemgr->get(*k).liquid_alternative_flowing);
}
virtual std::set<std::string> getTriggerContents()
{
return contents;
}
virtual float getTriggerInterval()
{ return 10.0; }
virtual u32 getTriggerChance()
{ return 10; }
virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n)
{
ServerMap *map = &env->getServerMap();
if (map->transforming_liquid_size() < 500)
map->transforming_liquid_add(p);
//if ((*map).m_transforming_liquid.size() < 500) (*map).m_transforming_liquid.push_back(p);
}
};
void add_legacy_abms(ServerEnvironment *env, INodeDefManager *nodedef)
{
env->addActiveBlockModifier(new GrowGrassABM());
env->addActiveBlockModifier(new RemoveGrassABM());
env->addActiveBlockModifier(new MakeTreesFromSaplingsABM());
if (g_settings->getBool("liquid_finite"))
env->addActiveBlockModifier(new LiquidFlowABM(env, nodedef));
}

4
src/content_mapblock.cpp
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@ -261,7 +261,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
level = (-0.5+node_liquid_level) * BS;
else if(n2.getContent() == c_flowing)
level = (-0.5 + ((float)(n2.param2&LIQUID_LEVEL_MASK)
+ 0.5) / 8.0 * node_liquid_level) * BS;
+ 0.5) / (float)LIQUID_LEVEL_SOURCE * node_liquid_level) * BS;
// Check node above neighbor.
// NOTE: This doesn't get executed if neighbor
@ -324,7 +324,7 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
}
}
if(air_count >= 2)
cornerlevel = -0.5*BS;
cornerlevel = -0.5*BS+0.1;
else if(valid_count > 0)
cornerlevel /= valid_count;
corner_levels[i] = cornerlevel;

5
src/defaultsettings.cpp
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@ -201,6 +201,11 @@ void set_default_settings(Settings *settings)
//mapgen related things
settings->setDefault("mg_name", "v6");
settings->setDefault("water_level", "1");
settings->setDefault("liquid_finite", "false");
settings->setDefault("liquid_update", "1.0");
settings->setDefault("liquid_relax", "1");
settings->setDefault("liquid_fast_flood", "1");
settings->setDefault("chunksize", "5");
settings->setDefault("mg_flags", "trees, caves, v6_biome_blend");
settings->setDefault("mgv6_freq_desert", "0.45");

312
src/map.cpp
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@ -1613,10 +1613,322 @@ struct NodeNeighbor {
MapNode n;
NeighborType t;
v3s16 p;
bool l; //can liquid
bool i; //infinity
};
void Map::transforming_liquid_add(v3s16 p) {
m_transforming_liquid.push_back(p);
}
s32 Map::transforming_liquid_size() {
return m_transforming_liquid.size();
}
const v3s16 g_7dirs[7] =
{
// +right, +top, +back
v3s16( 0,-1, 0), // bottom
v3s16( 0, 0, 0), // self
v3s16( 0, 0, 1), // back
v3s16( 0, 0,-1), // front
v3s16( 1, 0, 0), // right
v3s16(-1, 0, 0), // left
v3s16( 0, 1, 0) // top
};
#define D_BOTTOM 0
#define D_TOP 6
#define D_SELF 1
void Map::transformLiquidsFinite(core::map<v3s16, MapBlock*> & modified_blocks)
{
INodeDefManager *nodemgr = m_gamedef->ndef();
DSTACK(__FUNCTION_NAME);
//TimeTaker timer("transformLiquids()");
u32 loopcount = 0;
u32 initial_size = m_transforming_liquid.size();
u8 relax = g_settings->getS16("liquid_relax");
bool fast_flood = g_settings->getS16("liquid_fast_flood");
int water_level = g_settings->getS16("water_level");
/*if(initial_size != 0)
infostream<<"transformLiquids(): initial_size="<<initial_size<<std::endl;*/
// list of nodes that due to viscosity have not reached their max level height
UniqueQueue<v3s16> must_reflow, must_reflow_second;
// List of MapBlocks that will require a lighting update (due to lava)
core::map<v3s16, MapBlock*> lighting_modified_blocks;
while(m_transforming_liquid.size() > 0)
{
// This should be done here so that it is done when continue is used
if(loopcount >= initial_size || loopcount >= 1000)
break;
loopcount++;
/*
Get a queued transforming liquid node
*/
v3s16 p0 = m_transforming_liquid.pop_front();
u16 total_level = 0;
NodeNeighbor neighbors[7]; // surrounding flowing liquid nodes
s8 liquid_levels[7] = {-1, -1, -1, -1, -1, -1, -1}; // current level of every block
s8 liquid_levels_want[7] = {-1, -1, -1, -1, -1, -1, -1}; // target levels
s8 can_liquid_same_level = 0;
content_t liquid_kind = CONTENT_IGNORE;
content_t liquid_kind_flowing = CONTENT_IGNORE;
/*
Collect information about the environment
*/
const v3s16 *dirs = g_7dirs;
for (u16 i = 0; i < 7; i++) {
NeighborType nt = NEIGHBOR_SAME_LEVEL;
switch (i) {
case D_TOP:
nt = NEIGHBOR_UPPER;
break;
case D_BOTTOM:
nt = NEIGHBOR_LOWER;
break;
}
v3s16 npos = p0 + dirs[i];
neighbors[i].n = getNodeNoEx(npos);
neighbors[i].t = nt;
neighbors[i].p = npos;
neighbors[i].l = 0;
neighbors[i].i = 0;
NodeNeighbor & nb = neighbors[i];
switch (nodemgr->get(nb.n.getContent()).liquid_type) {
case LIQUID_NONE:
if (nb.n.getContent() == CONTENT_AIR) {
liquid_levels[i] = 0;
nb.l = 1;
}
break;
case LIQUID_SOURCE:
// if this node is not (yet) of a liquid type, choose the first liquid type we encounter
if (liquid_kind_flowing == CONTENT_IGNORE)
liquid_kind_flowing = nodemgr->getId(nodemgr->get(nb.n).liquid_alternative_flowing);
if (liquid_kind == CONTENT_IGNORE)
liquid_kind = nb.n.getContent();
if (nb.n.getContent() == liquid_kind) {
liquid_levels[i] = LIQUID_LEVEL_SOURCE;
nb.l = 1;
nb.i = (nb.n.param2 & LIQUID_INFINITY_MASK);
}
break;
case LIQUID_FLOWING:
// if this node is not (yet) of a liquid type, choose the first liquid type we encounter
if (liquid_kind_flowing == CONTENT_IGNORE)
liquid_kind_flowing = nb.n.getContent();
if (liquid_kind == CONTENT_IGNORE)
liquid_kind = nodemgr->getId(nodemgr->get(nb.n).liquid_alternative_source);
if (nb.n.getContent() == liquid_kind_flowing) {
liquid_levels[i] = (nb.n.param2 & LIQUID_LEVEL_MASK);
nb.l = 1;
}
break;
}
if (nb.l && nb.t == NEIGHBOR_SAME_LEVEL) ++can_liquid_same_level;
if (liquid_levels[i] > 0) total_level += liquid_levels[i];
/*
infostream << "get node i=" <<(int)i<<" " << PP(npos) << " c="<<nb.n.getContent() <<" p0="<< (int)nb.n.param0 <<" p1="<< (int)nb.n.param1 <<" p2="<< (int)nb.n.param2 << " lt="<<nodemgr->get(nb.n.getContent()).liquid_type
//<< " lk=" << liquid_kind << " lkf=" << liquid_kind_flowing
<< " l="<< nb.l << " inf="<< nb.i << " nlevel=" << (int)liquid_levels[i] << " tlevel=" << (int)total_level << " cansame="<<(int)can_liquid_same_level<<std::endl;
*/
}
if (liquid_kind == CONTENT_IGNORE || !neighbors[D_SELF].l || total_level <= 0)
continue;
// fill bottom block
if (neighbors[D_BOTTOM].l) {
liquid_levels_want[D_BOTTOM] = total_level > LIQUID_LEVEL_SOURCE ? LIQUID_LEVEL_SOURCE : total_level;
total_level -= liquid_levels_want[D_BOTTOM];
}
if (relax && p0.Y <= water_level && liquid_levels[D_TOP] == 0 && total_level >= LIQUID_LEVEL_SOURCE * can_liquid_same_level - can_liquid_same_level + 2 && can_liquid_same_level >= relax + 1) { //relax up
total_level = LIQUID_LEVEL_SOURCE * can_liquid_same_level;
}
// calculate self level 5 blocks
u8 want_level =
total_level >= LIQUID_LEVEL_SOURCE * can_liquid_same_level
? LIQUID_LEVEL_SOURCE
: total_level / can_liquid_same_level;
total_level -= want_level * can_liquid_same_level;
if (relax && p0.Y > water_level && liquid_levels[D_TOP] == 0 && liquid_levels[D_BOTTOM] == LIQUID_LEVEL_SOURCE && want_level == 0 && total_level <= can_liquid_same_level - 2 && can_liquid_same_level >= relax + 1) { //relax down
total_level = 0;
}
for (u16 ii = D_SELF; ii < D_TOP; ++ii) { // fill only same level
if (!neighbors[ii].l)
continue;
liquid_levels_want[ii] = want_level;
if (liquid_levels_want[ii] < LIQUID_LEVEL_SOURCE && total_level > 0
&& liquid_levels[ii] > liquid_levels_want[ii]
) {
++liquid_levels_want[ii];
--total_level;
}
}
for (u16 ii = 0; ii < 7; ++ii) {
if (total_level < 1) break;
if (liquid_levels_want[ii] >= 0 && liquid_levels_want[ii] < LIQUID_LEVEL_SOURCE) {
++liquid_levels_want[ii];
--total_level;
}
}
// fill top block if can
if (neighbors[D_TOP].l) {
liquid_levels_want[D_TOP] = total_level > LIQUID_LEVEL_SOURCE ? LIQUID_LEVEL_SOURCE : total_level ;
total_level -= liquid_levels_want[D_TOP];
}
for (u16 ii = 0; ii < 7; ii++) // infinity and cave flood optimization
if (liquid_levels_want[ii] >= 0 &&
(neighbors[ii].i ||
(fast_flood && p0.Y < water_level &&
(initial_size >= 1000
&& ii != D_TOP
&& want_level >= LIQUID_LEVEL_SOURCE/4
&& can_liquid_same_level >= 5
&& liquid_levels[D_TOP] >= LIQUID_LEVEL_SOURCE))))
liquid_levels_want[ii] = LIQUID_LEVEL_SOURCE;
//if (total_level > 0 /*|| flowed != volume*/) infostream <<" AFTER level=" << (int)total_level /*<< " flowed="<<flowed<< " volume=" <<volume*/<< " wantsame="<<(int)want_level<< " top="<< (int)liquid_levels_want[D_TOP]<< " topwas="<< (int)liquid_levels[D_TOP]<< " bot="<< (int)liquid_levels_want[D_BOTTOM]<<std::endl;
u8 changed = 0;
for (u16 i = 0; i < 7; i++) {
if (liquid_levels_want[i] < 0 || !neighbors[i].l)
continue;
MapNode & n0 = neighbors[i].n;
p0 = neighbors[i].p;
/*
decide on the type (and possibly level) of the current node
*/
content_t new_node_content;
s8 new_node_level = -1;
u8 viscosity = nodemgr->get(liquid_kind).liquid_viscosity;
if (viscosity > 1 && liquid_levels_want[i] != liquid_levels[i]) {
// amount to gain, limited by viscosity
// must be at least 1 in absolute value
s8 level_inc = liquid_levels_want[i] - liquid_levels[i];
if (level_inc < -viscosity || level_inc > viscosity)
new_node_level = liquid_levels[i] + level_inc/viscosity;
else if (level_inc < 0)
new_node_level = liquid_levels[i] - 1;
else if (level_inc > 0)
new_node_level = liquid_levels[i] + 1;
} else
new_node_level = liquid_levels_want[i];
if (new_node_level >= LIQUID_LEVEL_SOURCE)
new_node_content = liquid_kind;
else if (new_node_level > 0)
new_node_content = liquid_kind_flowing;
else
new_node_content = CONTENT_AIR;
// last level must flow down on stairs
if (liquid_levels_want[i] != liquid_levels[i] && liquid_levels[D_TOP] <= 0 && !neighbors[D_BOTTOM].l && new_node_level >= 1 && new_node_level <= 2) //maybe == 1 //
for (u16 ii = D_SELF + 1; ii < D_TOP; ++ii) { // only same level
if (!neighbors[ii].l)
continue;
must_reflow_second.push_back(p0 + dirs[ii]);
}
/*
check if anything has changed. if not, just continue with the next node.
*/
if (
new_node_content == n0.getContent()
&& (nodemgr->get(n0.getContent()).liquid_type != LIQUID_FLOWING ||
((n0.param2 & LIQUID_LEVEL_MASK) == (u8)new_node_level
// &&((n0.param2 & LIQUID_FLOW_DOWN_MASK) == LIQUID_FLOW_DOWN_MASK)== flowing_down
))
&&
(nodemgr->get(n0.getContent()).liquid_type != LIQUID_SOURCE ||
(((n0.param2 & LIQUID_INFINITY_MASK) == LIQUID_INFINITY_MASK) == neighbors[i].i
))
) {
continue;
}
++changed;
/*
update the current node
*/
if (nodemgr->get(new_node_content).liquid_type == LIQUID_FLOWING) {
// set level to last 3 bits, flowing down bit to 4th bit
n0.param2 = (new_node_level & LIQUID_LEVEL_MASK);
} else if (nodemgr->get(new_node_content).liquid_type == LIQUID_SOURCE) {
//n0.param2 = ~(LIQUID_LEVEL_MASK | LIQUID_FLOW_DOWN_MASK);
n0.param2 = (neighbors[i].i ? LIQUID_INFINITY_MASK : 0x00);
}
//infostream << "set node i=" <<(int)i<<" "<< PP(p0)<< " nc="<<new_node_content<< " p2="<<(int)n0.param2<< " nl="<<(int)new_node_level<<std::endl;
n0.setContent(new_node_content);
// Find out whether there is a suspect for this action
std::string suspect;
if(m_gamedef->rollback()){
suspect = m_gamedef->rollback()->getSuspect(p0, 83, 1);
}
if(!suspect.empty()){
// Blame suspect
RollbackScopeActor rollback_scope(m_gamedef->rollback(), suspect, true);
// Get old node for rollback
RollbackNode rollback_oldnode(this, p0, m_gamedef);
// Set node
setNode(p0, n0);
// Report
RollbackNode rollback_newnode(this, p0, m_gamedef);
RollbackAction action;
action.setSetNode(p0, rollback_oldnode, rollback_newnode);
m_gamedef->rollback()->reportAction(action);
} else {
// Set node
setNode(p0, n0);
}
v3s16 blockpos = getNodeBlockPos(p0);
MapBlock *block = getBlockNoCreateNoEx(blockpos);
if(block != NULL) {
modified_blocks.insert(blockpos, block);
// If node emits light, MapBlock requires lighting update
if(nodemgr->get(n0).light_source != 0)
lighting_modified_blocks[block->getPos()] = block;
}
must_reflow.push_back(neighbors[i].p);
}
/* //for better relax
if (changed) for (u16 ii = D_SELF + 1; ii < D_TOP; ++ii) { // only same level
if (!neighbors[ii].l) continue;
must_reflow.push_back(p0 + dirs[ii]);
}*/
}
//if (loopcount) infostream<<"Map::transformLiquids(): loopcount="<<loopcount<<" reflow="<<must_reflow.size()<<" queue="<< m_transforming_liquid.size()<<std::endl;
while (must_reflow.size() > 0)
m_transforming_liquid.push_back(must_reflow.pop_front());
while (must_reflow_second.size() > 0)
m_transforming_liquid.push_back(must_reflow_second.pop_front());
updateLighting(lighting_modified_blocks, modified_blocks);
}
void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
{
if (g_settings->getBool("liquid_finite")) return Map::transformLiquidsFinite(modified_blocks);
INodeDefManager *nodemgr = m_gamedef->ndef();
DSTACK(__FUNCTION_NAME);

4
src/map.h
View File

@ -300,6 +300,7 @@ public:
virtual void PrintInfo(std::ostream &out);
void transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks);
void transformLiquidsFinite(core::map<v3s16, MapBlock*> & modified_blocks);
/*
Node metadata
@ -328,6 +329,9 @@ public:
Variables
*/
void transforming_liquid_add(v3s16 p);
s32 transforming_liquid_size();
protected:
std::ostream &m_dout; // A bit deprecated, could be removed

5
src/mapnode.h
View File

@ -67,10 +67,15 @@ enum LightBank
#define LIQUID_LEVEL_MASK 0x07
#define LIQUID_FLOW_DOWN_MASK 0x08
//#define LIQUID_LEVEL_MASK 0x3f // better finite water
//#define LIQUID_FLOW_DOWN_MASK 0x40 // not used when finite water
/* maximum amount of liquid in a block */
#define LIQUID_LEVEL_MAX LIQUID_LEVEL_MASK
#define LIQUID_LEVEL_SOURCE (LIQUID_LEVEL_MAX+1)
#define LIQUID_INFINITY_MASK 0x80 //0b10000000
/*
This is the stuff what the whole world consists of.
*/

7
src/server.cpp
View File

@ -961,6 +961,7 @@ Server::Server(
m_ignore_map_edit_events_peer_id(0)
{
m_liquid_transform_timer = 0.0;
m_liquid_transform_every = 1.0;
m_print_info_timer = 0.0;
m_masterserver_timer = 0.0;
m_objectdata_timer = 0.0;
@ -1136,6 +1137,8 @@ Server::Server(
Add some test ActiveBlockModifiers to environment
*/
add_legacy_abms(m_env, m_nodedef);
m_liquid_transform_every = g_settings->getFloat("liquid_update");
}
Server::~Server()
@ -1452,9 +1455,9 @@ void Server::AsyncRunStep()
/* Transform liquids */
m_liquid_transform_timer += dtime;
if(m_liquid_transform_timer >= 1.00)
if(m_liquid_transform_timer >= m_liquid_transform_every)
{
m_liquid_transform_timer -= 1.00;
m_liquid_transform_timer -= m_liquid_transform_every;
JMutexAutoLock lock(m_env_mutex);

1
src/server.h
View File

@ -719,6 +719,7 @@ private:
// Some timers
float m_liquid_transform_timer;
float m_liquid_transform_every;
float m_print_info_timer;
float m_masterserver_timer;
float m_objectdata_timer;