Merge pull request #482 from proller/liquid

finite liquid
minetest · Feb 26, 2013 · 979ca23 · 979ca23
2 parents 9b5f182 + b90e431
commit 979ca23
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Showing 10 changed files with 384 additions and 8 deletions.
diff --git a/games/minimal/mods/default/mapgen.lua b/games/minimal/mods/default/mapgen.lua
@@ -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)
 
diff --git a/minetest.conf.example b/minetest.conf.example
@@ -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;

diff --git a/src/content_abm.cpp b/src/content_abm.cpp
@@ -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 @@ class MakeTreesFromSaplingsABM : public ActiveBlockModifier
 	}
 };
 
+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));
 }
-
-
diff --git a/src/content_mapblock.cpp b/src/content_mapblock.cpp
@@ -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;

diff --git a/src/defaultsettings.cpp b/src/defaultsettings.cpp
@@ -206,6 +206,11 @@ 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");