Set fallback content if resolving content vector requires everything

4 files changed, 47 insertions, 24 deletions

diff --git a/src/mg_schematic.cpp b/src/mg_schematic.cpp
index 299a328c9..0ecbd7083 100644
--- a/src/mg_schematic.cpp
+++ b/src/mg_schematic.cpp
@@ -248,7 +248,7 @@ bool Schematic::loadSchematicFromFile(const char *filename,
 		nri->nodenames.push_back(name);
 	}
 
-	nri->nodename_sizes.push_back(nidmapcount);
+	nri->nodelistinfo.push_back(NodeListInfo(nidmapcount, CONTENT_AIR));
 	ndef->pendNodeResolve(nri);
 
 	size_t nodecount = size.X * size.Y * size.Z;
diff --git a/src/nodedef.cpp b/src/nodedef.cpp
index bf97ff6d8..f87daa528 100644
--- a/src/nodedef.cpp
+++ b/src/nodedef.cpp
@@ -1308,8 +1308,7 @@ bool CNodeDefManager::getIdFromResolveInfo(NodeResolveInfo *nri,
 {
 	if (nri->nodenames.empty()) {
 		result = c_fallback;
-		errorstream << "CNodeDefManager::getIdFromResolveInfo: empty "
-			"nodenames list" << std::endl;
+		errorstream << "Resolver empty nodename list" << std::endl;
 		return false;
 	}
 
@@ -1324,8 +1323,8 @@ bool CNodeDefManager::getIdFromResolveInfo(NodeResolveInfo *nri,
 	}
 
 	if (!success) {
-		errorstream << "CNodeDefManager::getIdFromResolveInfo: Failed to "
-			"resolve node name '" << name << "'." << std::endl;
+		errorstream << "Resolver: Failed to resolve node name '" << name
+			<< "'." << std::endl;
 		c = c_fallback;
 	}
 
@@ -1337,31 +1336,35 @@ bool CNodeDefManager::getIdFromResolveInfo(NodeResolveInfo *nri,
 bool CNodeDefManager::getIdsFromResolveInfo(NodeResolveInfo *nri,
 	std::vector<content_t> &result)
 {
-	if (nri->nodename_sizes.empty()) {
-		errorstream << "CNodeDefManager::getIdsFromResolveInfo: empty "
-			"nodename_sizes list" << std::endl;
+	bool success = true;
+
+	if (nri->nodelistinfo.empty()) {
+		errorstream << "Resolver: Empty nodelistinfo list" << std::endl;
 		return false;
 	}
 
-	size_t nitems = nri->nodename_sizes.front();
-	nri->nodename_sizes.pop_front();
+	NodeListInfo listinfo = nri->nodelistinfo.front();
+	nri->nodelistinfo.pop_front();
 
-	while (nitems--) {
+	while (listinfo.length--) {
 		if (nri->nodenames.empty()) {
-			errorstream << "" << std::endl;
+			errorstream << "Resolver: Empty nodename list" << std::endl;
 			return false;
 		}
 
 		content_t c;
-		if (getId(nri->nodenames.front(), c)) {
+		std::string name = nri->nodenames.front();
+		nri->nodenames.pop_front();
+
+		if (getId(name, c)) {
 			result.push_back(c);
-		} else {
-			errorstream << "CNodeDefManager::getIdsFromResolveInfo: empty "
-				"nodenames list" << std::endl;
+		} else if (listinfo.all_required) {
+			errorstream << "Resolver: Failed to resolve node name '" << name
+				<< "'." << std::endl;
+			result.push_back(listinfo.c_fallback);
+			success = false;
 		}
-
-		nri->nodenames.pop_front();
 	}
 
-	return true;
+	return success;
 }
diff --git a/src/nodedef.h b/src/nodedef.h
index 0c779ddcc..1be764121 100644
--- a/src/nodedef.h
+++ b/src/nodedef.h
@@ -285,6 +285,26 @@ struct ContentFeatures
 class NodeResolver;
 class INodeDefManager;
 
+struct NodeListInfo {
+	NodeListInfo(u32 len)
+	{
+		length       = len;
+		all_required = false;
+		c_fallback   = CONTENT_IGNORE;
+	}
+
+	NodeListInfo(u32 len, content_t fallback)
+	{
+		length       = len;
+		all_required = true;
+		c_fallback   = fallback;
+	}
+
+	u32 length;
+	bool all_required;
+	content_t c_fallback;
+};
+
 struct NodeResolveInfo {
 	NodeResolveInfo(NodeResolver *nr)
 	{
@@ -292,7 +312,7 @@ struct NodeResolveInfo {
 	}
 
 	std::list<std::string> nodenames;
-	std::list<size_t> nodename_sizes;
+	std::list<NodeListInfo> nodelistinfo;
 	NodeResolver *resolver;
 };
 
diff --git a/src/script/lua_api/l_mapgen.cpp b/src/script/lua_api/l_mapgen.cpp
index a90c2c6c5..383fbeaef 100644
--- a/src/script/lua_api/l_mapgen.cpp
+++ b/src/script/lua_api/l_mapgen.cpp
@@ -508,7 +508,7 @@ int ModApiMapgen::l_register_decoration(lua_State *L)
 	//// Get node name(s) to place decoration on
 	std::vector<const char *> place_on_names;
 	getstringlistfield(L, index, "place_on", place_on_names);
-	nri->nodename_sizes.push_back(place_on_names.size());
+	nri->nodelistinfo.push_back(NodeListInfo(place_on_names.size()));
 	for (size_t i = 0; i != place_on_names.size(); i++)
 		nri->nodenames.push_back(place_on_names[i]);
 
@@ -585,7 +585,7 @@ bool ModApiMapgen::regDecoSimple(lua_State *L,
 			"defined" << std::endl;
 		return false;
 	}
-	nri->nodename_sizes.push_back(deco_names.size());
+	nri->nodelistinfo.push_back(NodeListInfo(deco_names.size()));
 	for (size_t i = 0; i != deco_names.size(); i++)
 		nri->nodenames.push_back(deco_names[i]);
 
@@ -596,7 +596,7 @@ bool ModApiMapgen::regDecoSimple(lua_State *L,
 			" but num_spawn_by specified" << std::endl;
 		return false;
 	}
-	nri->nodename_sizes.push_back(spawnby_names.size());
+	nri->nodelistinfo.push_back(NodeListInfo(spawnby_names.size()));
 	for (size_t i = 0; i != spawnby_names.size(); i++)
 		nri->nodenames.push_back(spawnby_names[i]);
 
@@ -691,7 +691,7 @@ int ModApiMapgen::l_register_ore(lua_State *L)
 
 	std::vector<const char *> wherein_names;
 	getstringlistfield(L, index, "wherein", wherein_names);
-	nri->nodename_sizes.push_back(wherein_names.size());
+	nri->nodelistinfo.push_back(NodeListInfo(wherein_names.size()));
 	for (size_t i = 0; i != wherein_names.size(); i++)
 		nri->nodenames.push_back(wherein_names[i]);