minetest/src/craftdef.cpp

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/*
Minetest-c55
Copyright (C) 2011 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "craftdef.h"
#include "irrlichttypes.h"
#include "log.h"
#include <sstream>
#include <set>
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#include "utility.h"
#include "gamedef.h"
#include "inventory.h"
// 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)
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{
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;
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}
// 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)
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{
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;
}
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}
// 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);
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}
return set;
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}
// Removes 1 from each item stack
static void craftDecrementInput(CraftInput &input, IGameDef *gamedef)
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{
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<<",";
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}
os<<"\""<<(i->getItemString())<<"\"";
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}
os<<" }";
return os.str();
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}
/*
CraftInput
*/
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std::string CraftInput::dump() const
{
std::ostringstream os(std::ios::binary);
os<<"(method="<<((int)method)<<", items="<<craftDumpMatrix(items, width)<<")";
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return os.str();
}
/*
CraftOutput
*/
std::string CraftOutput::dump() const
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{
std::ostringstream os(std::ios::binary);
os<<"(item=\""<<item<<"\", time="<<time<<")";
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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
*/
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void CraftDefinition::serialize(std::ostream &os) const
{
writeU8(os, 1); // version
os<<serializeString(getName());
serializeBody(os);
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}
CraftDefinition* CraftDefinition::deSerialize(std::istream &is)
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{
int version = readU8(is);
if(version != 1) throw SerializationError(
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"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");
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output = deSerializeString(is);
recipe.clear();
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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));
}
}
/*
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";
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}
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
*/
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class CCraftDefManager: public IWritableCraftDefManager
{
public:
virtual ~CCraftDefManager()
{
clear();
}
virtual bool getCraftResult(CraftInput &input, CraftOutput &output,
bool decrementInput, IGameDef *gamedef) const
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{
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++)
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{
if(!i->empty())
{
all_empty = false;
break;
}
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}
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++)
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{
CraftDefinition *def = *i;
/*infostream<<"Checking "<<input.dump()<<std::endl
<<" against "<<def->dump()<<std::endl;*/
try {
if(def->check(input, gamedef))
{
// Get output, then decrement input (if requested)
output = def->getOutput(input, gamedef);
if(decrementInput)
def->decrementInput(input, gamedef);
return true;
}
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}
catch(SerializationError &e)
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{
errorstream<<"getCraftResult: ERROR: "
<<"Serialization error in recipe "
<<def->dump()<<std::endl;
// then go on with the next craft definition
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}
}
return false;
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}
virtual std::string dump() const
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{
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";
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}
return os.str();
}
virtual void registerCraft(CraftDefinition *def)
{
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verbosestream<<"registerCraft: registering craft definition: "
<<def->dump()<<std::endl;
m_craft_definitions.push_back(def);
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}
virtual void clear()
{
for(std::vector<CraftDefinition*>::iterator
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i = m_craft_definitions.begin();
i != m_craft_definitions.end(); i++){
delete *i;
}
m_craft_definitions.clear();
}
virtual void serialize(std::ostream &os) const
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{
writeU8(os, 0); // version
u16 count = m_craft_definitions.size();
writeU16(os, count);
for(std::vector<CraftDefinition*>::const_iterator
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i = m_craft_definitions.begin();
i != m_craft_definitions.end(); i++){
CraftDefinition *def = *i;
// Serialize wrapped in a string
std::ostringstream tmp_os(std::ios::binary);
def->serialize(tmp_os);
os<<serializeString(tmp_os.str());
}
}
virtual void deSerialize(std::istream &is)
{
// Clear everything
clear();
// Deserialize
int version = readU8(is);
if(version != 0) throw SerializationError(
"unsupported CraftDefManager version");
u16 count = readU16(is);
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 = CraftDefinition::deSerialize(tmp_is);
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// Register
registerCraft(def);
}
}
private:
std::vector<CraftDefinition*> m_craft_definitions;
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};
IWritableCraftDefManager* createCraftDefManager()
{
return new CCraftDefManager();
}