footsteps are back

minetest.conf.example

@@ -151,6 +151,8 @@
 #enable_lavabuckets = false
 # allow players to craft tnt
 #enable_tnt = false
+# add footprints when players walk on grass
+#enable_footprints = true
 
 # Profiler data print interval. #0 = disable.
 #profiler_print_interval = 0

src/content_mapnode.cpp

@@ -1078,6 +1078,17 @@ void content_mapnode_init()
 	f->dug_item = std::string("MaterialItem2 ")+itos(CONTENT_MUD)+" 1";
 	setDirtLikeDiggingProperties(f->digging_properties, 1.0);
 
+	i = CONTENT_GRASS_FOOTSTEPS;
+	f = &content_features(i);
+	f->description = std::string("Grass");
+	f->setAllTextures("mud.png^grass_side.png");
+	f->setTexture(0, "grass_footsteps.png");
+	f->setTexture(1, "mud.png");
+	f->draw_type = CDT_CUBELIKE;
+	f->is_ground_content = true;
+	f->dug_item = std::string("MaterialItem2 ")+itos(CONTENT_MUD)+" 1";
+	setDirtLikeDiggingProperties(f->digging_properties, 1.0);
+
 	i = CONTENT_MUDSNOW;
 	f = &content_features(i);
 	f->description = std::string("Muddy Snow");

src/content_mapnode.h

@@ -179,7 +179,8 @@ MapNode mapnode_translate_to_internal(MapNode n_from, u8 version);
 #define CONTENT_STEAM 0x8CE
 #define CONTENT_INCINERATOR 0x8CF
 #define CONTENT_ASH 0x8D0
-// FREE 8D1-8FF
+#define CONTENT_GRASS_FOOTSTEPS 0x8D1
+// FREE 8D2-8FF
 // glass pane
 #define CONTENT_GLASS_PANE 0x900
 #define CONTENT_GLASS_PANE_BLUE 0x901

src/defaultsettings.cpp

@@ -100,6 +100,7 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("default_password", "");
 	settings->setDefault("default_privs", "build, shout");
 	settings->setDefault("borderstone_radius","5");
+	settings->setDefault("enable_footprints","true");
 
 	// only enable http on the server for now
 	// adventurous players can enable it on the client

src/environment.cpp

@@ -764,6 +764,9 @@ void ServerEnvironment::step(float dtime)
 
 	//TimeTaker timer("ServerEnv step");
 
+	// Get some settings
+	bool footprints = g_settings->getBool("enable_footprints");
+
 	/*
 		Increment game time
 	*/
@@ -779,19 +782,32 @@ void ServerEnvironment::step(float dtime)
 	*/
 	{
 		ScopeProfiler sp(g_profiler, "SEnv: handle players avg", SPT_AVG);
-		for(core::list<Player*>::Iterator i = m_players.begin();
-				i != m_players.end(); i++)
-		{
+		for (core::list<Player*>::Iterator i = m_players.begin(); i != m_players.end(); i++) {
 			Player *player = *i;
 
 			// Ignore disconnected players
-			if(player->peer_id == 0)
+			if (player->peer_id == 0)
 				continue;
 
 			v3f playerpos = player->getPosition();
 
 			// Move
 			player->move(dtime, *m_map, 100*BS);
+
+			/*
+				Add footsteps to grass
+			*/
+			if (footprints) {
+				// Get node that is at BS/4 under player
+				v3s16 bottompos = floatToInt(playerpos + v3f(0,-BS/4,0), BS);
+				try{
+					MapNode n = m_map->getNode(bottompos);
+					if (n.getContent() == CONTENT_GRASS) {
+						n.setContent(CONTENT_GRASS_FOOTSTEPS);
+						m_map->setNode(bottompos, n);
+					}
+				}catch (InvalidPositionException &e) {}
+			}
 		}
 	}
 
@@ -964,6 +980,12 @@ void ServerEnvironment::step(float dtime)
 				v3s16 p = p0 + block->getPosRelative();
 				MapNode n = block->getNodeNoEx(p0);
 
+				if (n.getContent() == CONTENT_GRASS_FOOTSTEPS) {
+					if (myrand()%5 == 0) {
+						n.setContent(CONTENT_GRASS);
+						m_map->addNodeWithEvent(p, n);
+					}
+				}
 				/*
 					Test something:
 					Convert mud under proper lighting to grass
@@ -2990,6 +3012,7 @@ void ClientEnvironment::step(float dtime)
 
 	// Get some settings
 	bool free_move = g_settings->getBool("free_move");
+	bool footprints = g_settings->getBool("enable_footprints");
 
 	// Get local player
 	LocalPlayer *lplayer = getLocalPlayer();
@@ -3197,6 +3220,34 @@ void ClientEnvironment::step(float dtime)
 		}
 		catch(InvalidPositionException &e) {}
 		player->updateLight(light);
+
+		/*
+			Add footsteps to grass
+		*/
+		if(footprints)
+		{
+			// Get node that is at BS/4 under player
+			v3s16 bottompos = floatToInt(playerpos + v3f(0,-BS/4,0), BS);
+			try{
+				MapNode n = m_map->getNode(bottompos);
+				if(n.getContent() == CONTENT_GRASS)
+				{
+					n.setContent(CONTENT_GRASS_FOOTSTEPS);
+					m_map->setNode(bottompos, n);
+					// Update mesh on client
+					if(m_map->mapType() == MAPTYPE_CLIENT)
+					{
+						v3s16 p_blocks = getNodeBlockPos(bottompos);
+						MapBlock *b = m_map->getBlockNoCreate(p_blocks);
+						//b->updateMesh(getDayNightRatio());
+						b->setMeshExpired(true);
+					}
+				}
+			}
+			catch(InvalidPositionException &e)
+			{
+			}
+		}
 	}
 
 	/*