The huge item definition and item namespace unification patch (itemdef), see http://c55.me/minetest/wiki/doku.php?id=changes:itemdef

1 files changed, 744 insertions, 100 deletions

diff --git a/src/craftdef.cpp b/src/craftdef.cpp
index 0cbb74ea0..5bcbf6f94 100644
--- a/src/craftdef.cpp
+++ b/src/craftdef.cpp
@@ -22,88 +22,738 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "irrlichttypes.h"
 #include "log.h"
 #include <sstream>
+#include <set>
 #include "utility.h"
 #include "gamedef.h"
 #include "inventory.h"
-#include "inventorymanager.h" // checkItemCombination
 
-CraftPointerInput::~CraftPointerInput()
+
+// Deserialize an itemstring then return the name of the item
+static std::string craftGetItemName(const std::string &itemstring, IGameDef *gamedef)
+{
+	ItemStack item;
+	item.deSerialize(itemstring, gamedef->idef());
+	return item.name;
+}
+
+// (mapcar craftGetItemName itemstrings)
+static std::vector<std::string> craftGetItemNames(
+		const std::vector<std::string> &itemstrings, IGameDef *gamedef)
+{
+	std::vector<std::string> result;
+	for(std::vector<std::string>::const_iterator
+			i = itemstrings.begin();
+			i != itemstrings.end(); i++)
+	{
+		result.push_back(craftGetItemName(*i, gamedef));
+	}
+	return result;
+}
+
+// Get name of each item, and return them as a new list.
+static std::vector<std::string> craftGetItemNames(
+		const std::vector<ItemStack> &items, IGameDef *gamedef)
 {
-	for(u32 i=0; i<items.size(); i++)
-		delete items[i];
+	std::vector<std::string> result;
+	for(std::vector<ItemStack>::const_iterator
+			i = items.begin();
+			i != items.end(); i++)
+	{
+		result.push_back(i->name);
+	}
+	return result;
 }
 
-CraftPointerInput createPointerInput(const CraftInput &ci, IGameDef *gamedef)
+// Compute bounding rectangle given a matrix of items
+// Returns false if every item is ""
+static bool craftGetBounds(const std::vector<std::string> &items, unsigned int width,
+		unsigned int &min_x, unsigned int &max_x,
+		unsigned int &min_y, unsigned int &max_y)
 {
-	std::vector<InventoryItem*> items;
-	for(u32 i=0; i<ci.items.size(); i++){
-		InventoryItem *item = NULL;
-		if(ci.items[i] != ""){
-			std::istringstream iss(ci.items[i], std::ios::binary);
-			item = InventoryItem::deSerialize(iss, gamedef);
+	bool success = false;
+	unsigned int x = 0;
+	unsigned int y = 0;
+	for(std::vector<std::string>::const_iterator
+			i = items.begin();
+			i != items.end(); i++)
+	{
+		if(*i != "")  // Is this an actual item?
+		{
+			if(!success)
+			{
+				// This is the first nonempty item
+				min_x = max_x = x;
+				min_y = max_y = y;
+				success = true;
+			}
+			else
+			{
+				if(x < min_x) min_x = x;
+				if(x > max_x) max_x = x;
+				if(y < min_y) min_y = y;
+				if(y > max_y) max_y = y;
+			}
 		}
-		items.push_back(item);
+
+		// Step coordinate
+		x++;
+		if(x == width)
+		{
+			x = 0;
+			y++;
+		}
+	}
+	return success;
+}
+
+// Convert a list of item names to a multiset
+static std::multiset<std::string> craftMakeMultiset(const std::vector<std::string> &names)
+{
+	std::multiset<std::string> set;
+	for(std::vector<std::string>::const_iterator
+			i = names.begin();
+			i != names.end(); i++)
+	{
+		if(*i != "")
+			set.insert(*i);
 	}
-	return CraftPointerInput(ci.width, items);
+	return set;
 }
 
-CraftInput createInput(const CraftPointerInput &cpi)
+// Removes 1 from each item stack
+static void craftDecrementInput(CraftInput &input, IGameDef *gamedef)
 {
-	std::vector<std::string> items;
-	for(u32 i=0; i<cpi.items.size(); i++){
-		if(cpi.items[i] == NULL)
-			items.push_back("");
-		else{
-			std::ostringstream oss(std::ios::binary);
-			cpi.items[i]->serialize(oss);
-			items.push_back(oss.str());
+	for(std::vector<ItemStack>::iterator
+			i = input.items.begin();
+			i != input.items.end(); i++)
+	{
+		if(i->count != 0)
+			i->remove(1);
+	}
+}
+
+// Removes 1 from each item stack with replacement support
+// Example: if replacements contains the pair ("bucket:bucket_water", "bucket:bucket_empty"),
+//   a water bucket will not be removed but replaced by an empty bucket.
+static void craftDecrementOrReplaceInput(CraftInput &input,
+		const CraftReplacements &replacements,
+		IGameDef *gamedef)
+{
+	if(replacements.pairs.empty())
+	{
+		craftDecrementInput(input, gamedef);
+		return;
+	}
+
+	// Make a copy of the replacements pair list
+	std::vector<std::pair<std::string, std::string> > pairs = replacements.pairs;
+
+	for(std::vector<ItemStack>::iterator
+			i = input.items.begin();
+			i != input.items.end(); i++)
+	{
+		if(i->count == 1)
+		{
+			// Find an appropriate replacement
+			bool found_replacement = false;
+			for(std::vector<std::pair<std::string, std::string> >::iterator
+					j = pairs.begin();
+					j != pairs.end(); j++)
+			{
+				ItemStack from_item;
+				from_item.deSerialize(j->first, gamedef->idef());
+				if(i->name == from_item.name)
+				{
+					i->deSerialize(j->second, gamedef->idef());
+					found_replacement = true;
+					pairs.erase(j);
+					break;
+				}
+			}
+			// No replacement was found, simply decrement count to zero
+			if(!found_replacement)
+				i->remove(1);
+		}
+		else if(i->count >= 2)
+		{
+			// Ignore replacements for items with count >= 2
+			i->remove(1);
+		}
+	}
+}
+
+// Dump an itemstring matrix
+static std::string craftDumpMatrix(const std::vector<std::string> &items,
+		unsigned int width)
+{
+	std::ostringstream os(std::ios::binary);
+	os<<"{ ";
+	unsigned int x = 0;
+	for(std::vector<std::string>::const_iterator
+			i = items.begin();
+			i != items.end(); i++, x++)
+	{
+		if(x == width)
+		{
+			os<<"; ";
+			x = 0;
+		}
+		else if(x != 0)
+		{
+			os<<",";
+		}
+		os<<"\""<<(*i)<<"\"";
+	}
+	os<<" }";
+	return os.str();
+}
+
+// Dump an item matrix
+std::string craftDumpMatrix(const std::vector<ItemStack> &items,
+		unsigned int width)
+{
+	std::ostringstream os(std::ios::binary);
+	os<<"{ ";
+	unsigned int x = 0;
+	for(std::vector<ItemStack>::const_iterator
+			i = items.begin();
+			i != items.end(); i++, x++)
+	{
+		if(x == width)
+		{
+			os<<"; ";
+			x = 0;
+		}
+		else if(x != 0)
+		{
+			os<<",";
 		}
+		os<<"\""<<(i->getItemString())<<"\"";
 	}
-	return CraftInput(cpi.width, items);
+	os<<" }";
+	return os.str();
 }
 
+
+/*
+	CraftInput
+*/
+
 std::string CraftInput::dump() const
 {
 	std::ostringstream os(std::ios::binary);
-	os<<"(width="<<width<<"){";
-	for(u32 i=0; i<items.size(); i++)
-		os<<"\""<<items[i]<<"\",";
-	os<<"}";
+	os<<"(method="<<((int)method)<<", items="<<craftDumpMatrix(items, width)<<")";
 	return os.str();
 }
 
-std::string CraftDefinition::dump() const
+/*
+	CraftOutput
+*/
+
+std::string CraftOutput::dump() const
 {
 	std::ostringstream os(std::ios::binary);
-	os<<"{output=\""<<output<<"\", input={";
-	for(u32 i=0; i<input.items.size(); i++)
-		os<<"\""<<input.items[i]<<"\",";
-	os<<"}, (input.width="<<input.width<<")}";
+	os<<"(item=\""<<item<<"\", time="<<time<<")";
 	return os.str();
 }
 
+/*
+	CraftReplacements
+*/
+std::string CraftReplacements::dump() const
+{
+	std::ostringstream os(std::ios::binary);
+	os<<"{";
+	const char *sep = "";
+	for(std::vector<std::pair<std::string, std::string> >::const_iterator
+			i = pairs.begin();
+			i != pairs.end(); i++)
+	{
+		os<<sep<<"\""<<(i->first)<<"\"=>\""<<(i->second)<<"\"";
+		sep = ",";
+	}
+	os<<"}";
+	return os.str();
+}
+
+
+/*
+	CraftDefinition
+*/
+
 void CraftDefinition::serialize(std::ostream &os) const
 {
-	writeU8(os, 0); // version
-	os<<serializeString(output);
-	writeU8(os, input.width);
-	writeU16(os, input.items.size());
-	for(u32 i=0; i<input.items.size(); i++)
-		os<<serializeString(input.items[i]);
+	writeU8(os, 1); // version
+	os<<serializeString(getName());
+	serializeBody(os);
 }
 
-void CraftDefinition::deSerialize(std::istream &is)
+CraftDefinition* CraftDefinition::deSerialize(std::istream &is)
 {
 	int version = readU8(is);
-	if(version != 0) throw SerializationError(
+	if(version != 1) throw SerializationError(
 			"unsupported CraftDefinition version");
+	std::string name = deSerializeString(is);
+	CraftDefinition *def = NULL;
+	if(name == "shaped")
+	{
+		def = new CraftDefinitionShaped;
+	}
+	else if(name == "shapeless")
+	{
+		def = new CraftDefinitionShapeless;
+	}
+	else if(name == "toolrepair")
+	{
+		def = new CraftDefinitionToolRepair;
+	}
+	else if(name == "cooking")
+	{
+		def = new CraftDefinitionCooking;
+	}
+	else if(name == "fuel")
+	{
+		def = new CraftDefinitionFuel;
+	}
+	else
+	{
+		infostream<<"Unknown CraftDefinition name=\""<<name<<"\""<<std::endl;
+                throw SerializationError("Unknown CraftDefinition name");
+	}
+	def->deSerializeBody(is, version);
+	return def;
+}
+
+/*
+	CraftDefinitionShaped
+*/
+
+std::string CraftDefinitionShaped::getName() const
+{
+	return "shaped";
+}
+
+bool CraftDefinitionShaped::check(const CraftInput &input, IGameDef *gamedef) const
+{
+	if(input.method != CRAFT_METHOD_NORMAL)
+		return false;
+
+	// Get input item matrix
+	std::vector<std::string> inp_names = craftGetItemNames(input.items, gamedef);
+	unsigned int inp_width = input.width;
+	if(inp_width == 0)
+		return false;
+	while(inp_names.size() % inp_width != 0)
+		inp_names.push_back("");
+
+	// Get input bounds
+	unsigned int inp_min_x=0, inp_max_x=0, inp_min_y=0, inp_max_y=0;
+	if(!craftGetBounds(inp_names, inp_width, inp_min_x, inp_max_x, inp_min_y, inp_max_y))
+		return false;  // it was empty
+
+	// Get recipe item matrix
+	std::vector<std::string> rec_names = craftGetItemNames(recipe, gamedef);
+	unsigned int rec_width = width;
+	if(rec_width == 0)
+		return false;
+	while(rec_names.size() % rec_width != 0)
+		rec_names.push_back("");
+
+	// Get recipe bounds
+	unsigned int rec_min_x=0, rec_max_x=0, rec_min_y=0, rec_max_y=0;
+	if(!craftGetBounds(rec_names, rec_width, rec_min_x, rec_max_x, rec_min_y, rec_max_y))
+		return false;  // it was empty
+
+	// Different sizes?
+	if(inp_max_x - inp_min_x != rec_max_x - rec_min_x)
+		return false;
+	if(inp_max_y - inp_min_y != rec_max_y - rec_min_y)
+		return false;
+
+	// Verify that all item names in the bounding box are equal
+	unsigned int w = inp_max_x - inp_min_x + 1;
+	unsigned int h = inp_max_y - inp_min_y + 1;
+	for(unsigned int y=0; y<h; y++)
+	for(unsigned int x=0; x<w; x++)
+	{
+		unsigned int inp_x = inp_min_x + x;
+		unsigned int inp_y = inp_min_y + y;
+		unsigned int rec_x = rec_min_x + x;
+		unsigned int rec_y = rec_min_y + y;
+
+		if(
+			inp_names[inp_y * inp_width + inp_x] !=
+			rec_names[rec_y * rec_width + rec_x]
+		){
+			return false;
+		}
+	}
+
+	return true;
+}
+
+CraftOutput CraftDefinitionShaped::getOutput(const CraftInput &input, IGameDef *gamedef) const
+{
+	return CraftOutput(output, 0);
+}
+
+void CraftDefinitionShaped::decrementInput(CraftInput &input, IGameDef *gamedef) const
+{
+	craftDecrementOrReplaceInput(input, replacements, gamedef);
+}
+
+std::string CraftDefinitionShaped::dump() const
+{
+	std::ostringstream os(std::ios::binary);
+	os<<"(shaped, output=\""<<output
+		<<"\", recipe="<<craftDumpMatrix(recipe, width)
+		<<", replacements="<<replacements.dump()<<")";
+	return os.str();
+}
+
+void CraftDefinitionShaped::serializeBody(std::ostream &os) const
+{
+	os<<serializeString(output);
+	writeU16(os, width);
+	writeU16(os, recipe.size());
+	for(u32 i=0; i<recipe.size(); i++)
+		os<<serializeString(recipe[i]);
+	writeU16(os, replacements.pairs.size());
+	for(u32 i=0; i<replacements.pairs.size(); i++)
+	{
+		os<<serializeString(replacements.pairs[i].first);
+		os<<serializeString(replacements.pairs[i].second);
+	}
+}
+
+void CraftDefinitionShaped::deSerializeBody(std::istream &is, int version)
+{
+	if(version != 1) throw SerializationError(
+			"unsupported CraftDefinitionShaped version");
+	output = deSerializeString(is);
+	width = readU16(is);
+	recipe.clear();
+	u32 count = readU16(is);
+	for(u32 i=0; i<count; i++)
+		recipe.push_back(deSerializeString(is));
+	replacements.pairs.clear();
+	count = readU16(is);
+	for(u32 i=0; i<count; i++)
+	{
+		std::string first = deSerializeString(is);
+		std::string second = deSerializeString(is);
+		replacements.pairs.push_back(std::make_pair(first, second));
+	}
+}
+
+/*
+	CraftDefinitionShapeless
+*/
+
+std::string CraftDefinitionShapeless::getName() const
+{
+	return "shapeless";
+}
+
+bool CraftDefinitionShapeless::check(const CraftInput &input, IGameDef *gamedef) const
+{
+	if(input.method != CRAFT_METHOD_NORMAL)
+		return false;
+
+	// Get input item multiset
+	std::vector<std::string> inp_names = craftGetItemNames(input.items, gamedef);
+	std::multiset<std::string> inp_names_multiset = craftMakeMultiset(inp_names);
+
+	// Get recipe item multiset
+	std::vector<std::string> rec_names = craftGetItemNames(recipe, gamedef);
+	std::multiset<std::string> rec_names_multiset = craftMakeMultiset(rec_names);
+
+	// Recipe is matched when the multisets coincide
+	return inp_names_multiset == rec_names_multiset;
+}
+
+CraftOutput CraftDefinitionShapeless::getOutput(const CraftInput &input, IGameDef *gamedef) const
+{
+	return CraftOutput(output, 0);
+}
+
+void CraftDefinitionShapeless::decrementInput(CraftInput &input, IGameDef *gamedef) const
+{
+	craftDecrementOrReplaceInput(input, replacements, gamedef);
+}
+
+std::string CraftDefinitionShapeless::dump() const
+{
+	std::ostringstream os(std::ios::binary);
+	os<<"(shapeless, output=\""<<output
+		<<"\", recipe="<<craftDumpMatrix(recipe, recipe.size())
+		<<", replacements="<<replacements.dump()<<")";
+	return os.str();
+}
+
+void CraftDefinitionShapeless::serializeBody(std::ostream &os) const
+{
+	os<<serializeString(output);
+	writeU16(os, recipe.size());
+	for(u32 i=0; i<recipe.size(); i++)
+		os<<serializeString(recipe[i]);
+	writeU16(os, replacements.pairs.size());
+	for(u32 i=0; i<replacements.pairs.size(); i++)
+	{
+		os<<serializeString(replacements.pairs[i].first);
+		os<<serializeString(replacements.pairs[i].second);
+	}
+}
+
+void CraftDefinitionShapeless::deSerializeBody(std::istream &is, int version)
+{
+	if(version != 1) throw SerializationError(
+			"unsupported CraftDefinitionShapeless version");
 	output = deSerializeString(is);
-	input.width = readU8(is);
+	recipe.clear();
 	u32 count = readU16(is);
 	for(u32 i=0; i<count; i++)
-		input.items.push_back(deSerializeString(is));
+		recipe.push_back(deSerializeString(is));
+	replacements.pairs.clear();
+	count = readU16(is);
+	for(u32 i=0; i<count; i++)
+	{
+		std::string first = deSerializeString(is);
+		std::string second = deSerializeString(is);
+		replacements.pairs.push_back(std::make_pair(first, second));
+	}
+}
+
+/*
+	CraftDefinitionToolRepair
+*/
+
+static ItemStack craftToolRepair(
+		const ItemStack &item1,
+		const ItemStack &item2,
+		float additional_wear,
+		IGameDef *gamedef)
+{
+	IItemDefManager *idef = gamedef->idef();
+	if(item1.count != 1 || item2.count != 1 || item1.name != item2.name
+			|| idef->get(item1.name).type != ITEM_TOOL
+			|| idef->get(item2.name).type != ITEM_TOOL)
+	{
+		// Failure
+		return ItemStack();
+	}
+
+	s32 item1_uses = 65536 - (u32) item1.wear;
+	s32 item2_uses = 65536 - (u32) item2.wear;
+	s32 new_uses = item1_uses + item2_uses;
+	s32 new_wear = 65536 - new_uses + floor(additional_wear * 65536 + 0.5);
+	if(new_wear >= 65536)
+		return ItemStack();
+	if(new_wear < 0)
+		new_wear = 0;
+
+	ItemStack repaired = item1;
+	repaired.wear = new_wear;
+	return repaired;
+}
+
+std::string CraftDefinitionToolRepair::getName() const
+{
+	return "toolrepair";
+}
+
+bool CraftDefinitionToolRepair::check(const CraftInput &input, IGameDef *gamedef) const
+{
+	if(input.method != CRAFT_METHOD_NORMAL)
+		return false;
+
+	ItemStack item1;
+	ItemStack item2;
+	for(std::vector<ItemStack>::const_iterator
+			i = input.items.begin();
+			i != input.items.end(); i++)
+	{
+		if(!i->empty())
+		{
+			if(item1.empty())
+				item1 = *i;
+			else if(item2.empty())
+				item2 = *i;
+			else
+				return false;
+		}
+	}
+	ItemStack repaired = craftToolRepair(item1, item2, additional_wear, gamedef);
+	return !repaired.empty();
+}
+
+CraftOutput CraftDefinitionToolRepair::getOutput(const CraftInput &input, IGameDef *gamedef) const
+{
+	ItemStack item1;
+	ItemStack item2;
+	for(std::vector<ItemStack>::const_iterator
+			i = input.items.begin();
+			i != input.items.end(); i++)
+	{
+		if(!i->empty())
+		{
+			if(item1.empty())
+				item1 = *i;
+			else if(item2.empty())
+				item2 = *i;
+		}
+	}
+	ItemStack repaired = craftToolRepair(item1, item2, additional_wear, gamedef);
+	return CraftOutput(repaired.getItemString(), 0);
+}
+
+void CraftDefinitionToolRepair::decrementInput(CraftInput &input, IGameDef *gamedef) const
+{
+	craftDecrementInput(input, gamedef);
+}
+
+std::string CraftDefinitionToolRepair::dump() const
+{
+	std::ostringstream os(std::ios::binary);
+	os<<"(toolrepair, additional_wear="<<additional_wear<<")";
+	return os.str();
+}
+
+void CraftDefinitionToolRepair::serializeBody(std::ostream &os) const
+{
+	writeF1000(os, additional_wear);
+}
+
+void CraftDefinitionToolRepair::deSerializeBody(std::istream &is, int version)
+{
+	if(version != 1) throw SerializationError(
+			"unsupported CraftDefinitionToolRepair version");
+	additional_wear = readF1000(is);
+}
+
+/*
+	CraftDefinitionCooking
+*/
+
+std::string CraftDefinitionCooking::getName() const
+{
+	return "cooking";
 }
 
+bool CraftDefinitionCooking::check(const CraftInput &input, IGameDef *gamedef) const
+{
+	if(input.method != CRAFT_METHOD_COOKING)
+		return false;
+
+	// Get input item multiset
+	std::vector<std::string> inp_names = craftGetItemNames(input.items, gamedef);
+	std::multiset<std::string> inp_names_multiset = craftMakeMultiset(inp_names);
+
+	// Get recipe item multiset
+	std::multiset<std::string> rec_names_multiset;
+	rec_names_multiset.insert(craftGetItemName(recipe, gamedef));
+
+	// Recipe is matched when the multisets coincide
+	return inp_names_multiset == rec_names_multiset;
+}
+
+CraftOutput CraftDefinitionCooking::getOutput(const CraftInput &input, IGameDef *gamedef) const
+{
+	return CraftOutput(output, cooktime);
+}
+
+void CraftDefinitionCooking::decrementInput(CraftInput &input, IGameDef *gamedef) const
+{
+	craftDecrementInput(input, gamedef);
+}
+
+std::string CraftDefinitionCooking::dump() const
+{
+	std::ostringstream os(std::ios::binary);
+	os<<"(cooking, output=\""<<output
+		<<"\", recipe=\""<<recipe
+		<<"\", cooktime="<<cooktime<<")";
+	return os.str();
+}
+
+void CraftDefinitionCooking::serializeBody(std::ostream &os) const
+{
+	os<<serializeString(output);
+	os<<serializeString(recipe);
+	writeF1000(os, cooktime);
+}
+
+void CraftDefinitionCooking::deSerializeBody(std::istream &is, int version)
+{
+	if(version != 1) throw SerializationError(
+			"unsupported CraftDefinitionCooking version");
+	output = deSerializeString(is);
+	recipe = deSerializeString(is);
+	cooktime = readF1000(is);
+}
+
+/*
+	CraftDefinitionFuel
+*/
+
+std::string CraftDefinitionFuel::getName() const
+{
+	return "fuel";
+}
+
+bool CraftDefinitionFuel::check(const CraftInput &input, IGameDef *gamedef) const
+{
+	if(input.method != CRAFT_METHOD_FUEL)
+		return false;
+
+	// Get input item multiset
+	std::vector<std::string> inp_names = craftGetItemNames(input.items, gamedef);
+	std::multiset<std::string> inp_names_multiset = craftMakeMultiset(inp_names);
+
+	// Get recipe item multiset
+	std::multiset<std::string> rec_names_multiset;
+	rec_names_multiset.insert(craftGetItemName(recipe, gamedef));
+
+	// Recipe is matched when the multisets coincide
+	return inp_names_multiset == rec_names_multiset;
+}
+
+CraftOutput CraftDefinitionFuel::getOutput(const CraftInput &input, IGameDef *gamedef) const
+{
+	return CraftOutput("", burntime);
+}
+
+void CraftDefinitionFuel::decrementInput(CraftInput &input, IGameDef *gamedef) const
+{
+	craftDecrementInput(input, gamedef);
+}
+
+std::string CraftDefinitionFuel::dump() const
+{
+	std::ostringstream os(std::ios::binary);
+	os<<"(fuel, recipe=\""<<recipe
+		<<"\", burntime="<<burntime<<")";
+	return os.str();
+}
+
+void CraftDefinitionFuel::serializeBody(std::ostream &os) const
+{
+	os<<serializeString(recipe);
+	writeF1000(os, burntime);
+}
+
+void CraftDefinitionFuel::deSerializeBody(std::istream &is, int version)
+{
+	if(version != 1) throw SerializationError(
+			"unsupported CraftDefinitionFuel version");
+	recipe = deSerializeString(is);
+	burntime = readF1000(is);
+}
+
+/*
+	Craft definition manager
+*/
+
 class CCraftDefManager: public IWritableCraftDefManager
 {
 public:
@@ -111,58 +761,46 @@ public:
 	{
 		clear();
 	}
-	virtual InventoryItem* getCraftResult(const CraftPointerInput &input_cpi,
-			IGameDef *gamedef) const
+	virtual bool getCraftResult(CraftInput &input, CraftOutput &output,
+			bool decrementInput, IGameDef *gamedef) const
 	{
-		if(input_cpi.width > 3){
-			errorstream<<"getCraftResult(): ERROR: "
-					<<"input_cpi.width > 3; Failing to craft."<<std::endl;
-			return NULL;
-		}
-		InventoryItem *input_items[9];
-		for(u32 y=0; y<3; y++)
-		for(u32 x=0; x<3; x++)
+		output.item = "";
+		output.time = 0;
+
+		// If all input items are empty, abort.
+		bool all_empty = true;
+		for(std::vector<ItemStack>::const_iterator
+				i = input.items.begin();
+				i != input.items.end(); i++)
 		{
-			u32 i=y*3+x;
-			if(x >= input_cpi.width || y >= input_cpi.height())
-				input_items[i] = NULL;
-			else
-				input_items[i] = input_cpi.items[y*input_cpi.width+x];
+			if(!i->empty())
+			{
+				all_empty = false;
+				break;
+			}
 		}
-		for(core::list<CraftDefinition*>::ConstIterator
-				i = m_craft_definitions.begin();
-				i != m_craft_definitions.end(); i++)
+		if(all_empty)
+			return false;
+
+		// Walk crafting definitions from back to front, so that later
+		// definitions can override earlier ones.
+		for(std::vector<CraftDefinition*>::const_reverse_iterator
+				i = m_craft_definitions.rbegin();
+				i != m_craft_definitions.rend(); i++)
 		{
 			CraftDefinition *def = *i;
 
-			/*infostream<<"Checking "<<createInput(input_cpi).dump()<<std::endl
-					<<" against "<<def->input.dump()
-					<<" (output=\""<<def->output<<"\")"<<std::endl;*/
+			/*infostream<<"Checking "<<input.dump()<<std::endl
+					<<" against "<<def->dump()<<std::endl;*/
 
 			try {
-				CraftPointerInput spec_cpi = createPointerInput(def->input, gamedef);
-				if(spec_cpi.width > 3){
-					errorstream<<"getCraftResult: ERROR: "
-							<<"spec_cpi.width > 3 in recipe "
-							<<def->dump()<<std::endl;
-					continue;
-				}
-				InventoryItem *spec_items[9];
-				for(u32 y=0; y<3; y++)
-				for(u32 x=0; x<3; x++)
+				if(def->check(input, gamedef))
 				{
-					u32 i=y*3+x;
-					if(x >= spec_cpi.width || y >= spec_cpi.height())
-						spec_items[i] = NULL;
-					else
-						spec_items[i] = spec_cpi.items[y*spec_cpi.width+x];
-				}
-
-				bool match = checkItemCombination(input_items, spec_items);
-
-				if(match){
-					std::istringstream iss(def->output, std::ios::binary);
-					return InventoryItem::deSerialize(iss, gamedef);
+					// Get output, then decrement input (if requested)
+					output = def->getOutput(input, gamedef);
+					if(decrementInput)
+						def->decrementInput(input, gamedef);
+					return true;
 				}
 			}
 			catch(SerializationError &e)
@@ -173,34 +811,41 @@ public:
 				// then go on with the next craft definition
 			}
 		}
-		return NULL;
+		return false;
 	}
-	virtual void registerCraft(const CraftDefinition &def)
+	virtual std::string dump() const
 	{
-		infostream<<"registerCraft: registering craft definition: "
-				<<def.dump()<<std::endl;
-		if(def.input.width > 3 || def.input.height() > 3){
-			errorstream<<"registerCraft: input size is larger than 3x3,"
-					<<" ignoring"<<std::endl;
-			return;
+		std::ostringstream os(std::ios::binary);
+		os<<"Crafting definitions:\n";
+		for(std::vector<CraftDefinition*>::const_iterator
+				i = m_craft_definitions.begin();
+				i != m_craft_definitions.end(); i++)
+		{
+			os<<(*i)->dump()<<"\n";
 		}
-		m_craft_definitions.push_back(new CraftDefinition(def));
+		return os.str();
+	}
+	virtual void registerCraft(CraftDefinition *def)
+	{
+		infostream<<"registerCraft: registering craft definition: "
+				<<def->dump()<<std::endl;
+		m_craft_definitions.push_back(def);
 	}
 	virtual void clear()
 	{
-		for(core::list<CraftDefinition*>::Iterator
+		for(std::vector<CraftDefinition*>::iterator
 				i = m_craft_definitions.begin();
 				i != m_craft_definitions.end(); i++){
 			delete *i;
 		}
 		m_craft_definitions.clear();
 	}
-	virtual void serialize(std::ostream &os)
+	virtual void serialize(std::ostream &os) const
 	{
 		writeU8(os, 0); // version
 		u16 count = m_craft_definitions.size();
 		writeU16(os, count);
-		for(core::list<CraftDefinition*>::Iterator
+		for(std::vector<CraftDefinition*>::const_iterator
 				i = m_craft_definitions.begin();
 				i != m_craft_definitions.end(); i++){
 			CraftDefinition *def = *i;
@@ -222,14 +867,13 @@ public:
 		for(u16 i=0; i<count; i++){
 			// Deserialize a string and grab a CraftDefinition from it
 			std::istringstream tmp_is(deSerializeString(is), std::ios::binary);
-			CraftDefinition def;
-			def.deSerialize(tmp_is);
+			CraftDefinition *def = CraftDefinition::deSerialize(tmp_is);
 			// Register
 			registerCraft(def);
 		}
 	}
 private:
-	core::list<CraftDefinition*> m_craft_definitions;
+	std::vector<CraftDefinition*> m_craft_definitions;
 };
 
 IWritableCraftDefManager* createCraftDefManager()