From fa08294d09a46b603e9ff5e034010c0a7986c61a Mon Sep 17 00:00:00 2001
From: Perttu Ahola <celeron55@gmail.com>
Date: Mon, 4 Apr 2011 03:45:08 +0300
Subject: [PATCH] Node metadata framework

---
 src/client.cpp  |  5 ++---
 src/client.h    |  2 +-
 src/main.cpp    |  7 ++++++-
 src/map.cpp     | 53 +++++++++++++++++++++++++++++++++++++++++++++++--
 src/map.h       |  4 +++-
 src/mapnode.cpp |  2 ++
 src/mapnode.h   |  5 +++++
 7 files changed, 70 insertions(+), 8 deletions(-)

diff --git a/src/client.cpp b/src/client.cpp
index e381fbce..009591c4 100644
--- a/src/client.cpp
+++ b/src/client.cpp
@@ -1787,10 +1787,9 @@ MapNode Client::getNode(v3s16 p)
 	return m_env.getMap().getNode(p);
 }
 
-NodeMetadata* Client::getNodeMetadataClone(v3s16 p)
+NodeMetadata* Client::getNodeMetadata(v3s16 p)
 {
-	//JMutexAutoLock envlock(m_env_mutex); //bulk comment-out
-	return m_env.getMap().getNodeMetadataClone(p);
+	return m_env.getMap().getNodeMetadata(p);
 }
 
 v3f Client::getPlayerPosition()
diff --git a/src/client.h b/src/client.h
index d46b51a0..39152828 100644
--- a/src/client.h
+++ b/src/client.h
@@ -290,7 +290,7 @@ public:
 	// Returns InvalidPositionException if not found
 	MapNode getNode(v3s16 p);
 	// Wrapper to Map
-	NodeMetadata* getNodeMetadataClone(v3s16 p);
+	NodeMetadata* getNodeMetadata(v3s16 p);
 
 	v3f getPlayerPosition();
 
diff --git a/src/main.cpp b/src/main.cpp
index 3ddac369..4b968865 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2821,10 +2821,15 @@ int main(int argc, char *argv[])
 			hilightboxes.push_back(nodehilightbox);
 
 			/*
-				TODO:
 				Check information text of node
 			*/
 
+			NodeMetadata *meta = client.getNodeMetadata(nodepos);
+			if(meta)
+			{
+				infotext = narrow_to_wide(meta->infoText());
+			}
+
 			/*
 				Handle digging
 			*/
diff --git a/src/map.cpp b/src/map.cpp
index 39742a89..d644215b 100644
--- a/src/map.cpp
+++ b/src/map.cpp
@@ -954,6 +954,17 @@ void Map::addNodeAndUpdate(v3s16 p, MapNode n,
 	*/
 	
 	setNode(p, n);
+
+	/*
+		Add intial metadata
+	*/
+
+	NodeMetadata *meta_proto = content_features(n.d).initial_metadata;
+	if(meta_proto)
+	{
+		NodeMetadata *meta = meta_proto->clone();
+		setNodeMetadata(p, meta);
+	}
 	
 	/*
 		If node is under sunlight and doesn't let sunlight through,
@@ -1093,6 +1104,12 @@ void Map::removeNodeAndUpdate(v3s16 p,
 				light_sources, modified_blocks);
 	}
 
+	/*
+		Remove node metadata
+	*/
+
+	removeNodeMetadata(p);
+
 	/*
 		Remove the node.
 		This also clears the lighting.
@@ -1696,17 +1713,49 @@ void Map::transformLiquids(core::map<v3s16, MapBlock*> & modified_blocks)
 	//dstream<<"Map::transformLiquids(): loopcount="<<loopcount<<std::endl;
 }
 
-NodeMetadata* Map::getNodeMetadataClone(v3s16 p)
+NodeMetadata* Map::getNodeMetadata(v3s16 p)
 {
 	v3s16 blockpos = getNodeBlockPos(p);
 	v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
 	MapBlock *block = getBlockNoCreateNoEx(blockpos);
 	if(block == NULL)
+	{
+		dstream<<"WARNING: Map::setNodeMetadata(): Block not found"
+				<<std::endl;
 		return NULL;
-	NodeMetadata *meta = block->m_node_metadata.getClone(p_rel);
+	}
+	NodeMetadata *meta = block->m_node_metadata.get(p_rel);
 	return meta;
 }
 
+void Map::setNodeMetadata(v3s16 p, NodeMetadata *meta)
+{
+	v3s16 blockpos = getNodeBlockPos(p);
+	v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
+	MapBlock *block = getBlockNoCreateNoEx(blockpos);
+	if(block == NULL)
+	{
+		dstream<<"WARNING: Map::setNodeMetadata(): Block not found"
+				<<std::endl;
+		return;
+	}
+	block->m_node_metadata.set(p_rel, meta);
+}
+
+void Map::removeNodeMetadata(v3s16 p)
+{
+	v3s16 blockpos = getNodeBlockPos(p);
+	v3s16 p_rel = p - blockpos*MAP_BLOCKSIZE;
+	MapBlock *block = getBlockNoCreateNoEx(blockpos);
+	if(block == NULL)
+	{
+		dstream<<"WARNING: Map::removeNodeMetadata(): Block not found"
+				<<std::endl;
+		return;
+	}
+	block->m_node_metadata.remove(p_rel);
+}
+
 /*
 	ServerMap
 */
diff --git a/src/map.h b/src/map.h
index 2fafcae1..b1b3b9af 100644
--- a/src/map.h
+++ b/src/map.h
@@ -282,7 +282,9 @@ public:
 		These are basically coordinate wrappers to MapBlock
 	*/
 	
-	NodeMetadata* getNodeMetadataClone(v3s16 p);
+	NodeMetadata* getNodeMetadata(v3s16 p);
+	void setNodeMetadata(v3s16 p, NodeMetadata *meta);
+	void removeNodeMetadata(v3s16 p);
 
 	/*
 		Variables
diff --git a/src/mapnode.cpp b/src/mapnode.cpp
index a8c951ab..c8a7e504 100644
--- a/src/mapnode.cpp
+++ b/src/mapnode.cpp
@@ -306,6 +306,8 @@ void init_mapnode()
 	f->walkable = false;
 	f->wall_mounted = true;
 	f->dug_item = std::string("MaterialItem ")+itos(i)+" 1";
+	if(f->initial_metadata == NULL)
+		f->initial_metadata = new SignNodeMetadata();
 	
 }
 
diff --git a/src/mapnode.h b/src/mapnode.h
index ba08a37d..0762599c 100644
--- a/src/mapnode.h
+++ b/src/mapnode.h
@@ -28,6 +28,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "serialization.h"
 #include "tile.h"
 #include "iirrlichtwrapper.h"
+#include "nodemetadata.h"
 
 /*
 	Initializes all kind of stuff in here.
@@ -157,6 +158,9 @@ struct ContentFeatures
 	// Inventory item string as which the node appears in inventory when dug.
 	// Mineral overrides this.
 	std::string dug_item;
+	
+	// Initial metadata is cloned from this
+	NodeMetadata *initial_metadata;
 
 	//TODO: Move more properties here
 
@@ -176,6 +180,7 @@ struct ContentFeatures
 		liquid_type = LIQUID_NONE;
 		wall_mounted = false;
 		dug_item = "";
+		initial_metadata = NULL;
 	}
 
 	~ContentFeatures();
-- 
2.30.2