minetest/src/craftdef.cpp

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/*
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Minetest
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Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
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(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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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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>
#include <algorithm>
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#include "gamedef.h"
#include "inventory.h"
#include "util/serialize.h"
#include "util/string.h"
#include "util/numeric.h"
#include "strfnd.h"
#include "exceptions.h"
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inline bool isGroupRecipeStr(const std::string &rec_name)
{
return str_starts_with(rec_name, std::string("group:"));
}
inline u64 getHashForString(const std::string &recipe_str)
{
/*errorstream << "Hashing craft string \"" << recipe_str << '"';*/
return murmur_hash_64_ua(recipe_str.data(), recipe_str.length(), 0xdeadbeef);
}
static u64 getHashForGrid(CraftHashType type, const std::vector<std::string> &grid_names)
{
switch (type) {
case CRAFT_HASH_TYPE_ITEM_NAMES: {
std::ostringstream os;
bool is_first = true;
for (size_t i = 0; i < grid_names.size(); i++) {
if (grid_names[i] != "") {
os << (is_first ? "" : "\n") << grid_names[i];
is_first = false;
}
}
return getHashForString(os.str());
} case CRAFT_HASH_TYPE_COUNT: {
u64 cnt = 0;
for (size_t i = 0; i < grid_names.size(); i++)
if (grid_names[i] != "")
cnt++;
return cnt;
} case CRAFT_HASH_TYPE_UNHASHED:
return 0;
}
// invalid CraftHashType
assert(false);
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return 0;
}
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// Check if input matches recipe
// Takes recipe groups into account
static bool inputItemMatchesRecipe(const std::string &inp_name,
const std::string &rec_name, IItemDefManager *idef)
{
// Exact name
if (inp_name == rec_name)
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return true;
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// Group
if (isGroupRecipeStr(rec_name) && idef->isKnown(inp_name)) {
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const struct ItemDefinition &def = idef->get(inp_name);
Strfnd f(rec_name.substr(6));
bool all_groups_match = true;
do {
std::string check_group = f.next(",");
if (itemgroup_get(def.groups, check_group) == 0) {
all_groups_match = false;
break;
}
} while (!f.atend());
if (all_groups_match)
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return true;
}
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// Didn't match
return false;
}
// 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>::size_type i = 0;
i < itemstrings.size(); i++) {
result.push_back(craftGetItemName(itemstrings[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>::size_type i = 0;
i < items.size(); i++) {
result.push_back(items[i].name);
}
return result;
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}
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// convert a list of item names, to ItemStacks.
static std::vector<ItemStack> craftGetItems(
const std::vector<std::string> &items, IGameDef *gamedef)
{
std::vector<ItemStack> result;
for (std::vector<std::string>::size_type i = 0;
i < items.size(); i++) {
result.push_back(ItemStack(std::string(items[i]), (u16)1,
(u16)0, "", gamedef->getItemDefManager()));
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}
return result;
}
// 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>::size_type i = 0;
i < items.size(); i++) {
// Is this an actual item?
if (items[i] != "") {
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;
}
// Removes 1 from each item stack
static void craftDecrementInput(CraftInput &input, IGameDef *gamedef)
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{
for (std::vector<ItemStack>::size_type i = 0;
i < input.items.size(); i++) {
if (input.items[i].count != 0)
input.items[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,
std::vector<ItemStack> &output_replacements,
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>::size_type i = 0;
i < input.items.size(); i++) {
ItemStack &item = input.items[i];
// 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) {
if (item.name == craftGetItemName(j->first, gamedef)) {
if (item.count == 1) {
item.deSerialize(j->second, gamedef->idef());
found_replacement = true;
pairs.erase(j);
break;
} else {
ItemStack rep;
rep.deSerialize(j->second, gamedef->idef());
item.remove(1);
found_replacement = true;
output_replacements.push_back(rep);
break;
}
}
}
// No replacement was found, simply decrement count by one
if (!found_replacement && item.count > 0)
item.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>::size_type i = 0;
i < items.size(); i++, x++) {
if (x == width) {
os << "; ";
x = 0;
} else if (x != 0) {
os << ",";
}
os << '"' << items[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>::size_type i = 0;
i < items.size(); i++, x++) {
if (x == width) {
os << "; ";
x = 0;
} else if (x != 0) {
os << ",";
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}
os << '"' << (items[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> >::size_type i = 0;
i < pairs.size(); i++) {
const std::pair<std::string, std::string> &repl_p = pairs[i];
os << sep
<< '"' << (repl_p.first)
<< "\"=>\"" << (repl_p.second) << '"';
sep = ",";
}
os << "}";
return os.str();
}
/*
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
std::vector<std::string> rec_names;
if (hash_inited)
rec_names = recipe_names;
else
rec_names = craftGetItemNames(recipe, gamedef);
// Get recipe item matrix
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 ||
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++) {
unsigned int inp_y = (inp_min_y + y) * inp_width;
unsigned int rec_y = (rec_min_y + y) * rec_width;
for (unsigned int x=0; x < w; x++) {
unsigned int inp_x = inp_min_x + x;
unsigned int rec_x = rec_min_x + x;
if (!inputItemMatchesRecipe(
inp_names[inp_y + inp_x],
rec_names[rec_y + rec_x], gamedef->idef())) {
return false;
}
}
}
return true;
}
CraftOutput CraftDefinitionShaped::getOutput(const CraftInput &input, IGameDef *gamedef) const
{
return CraftOutput(output, 0);
}
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CraftInput CraftDefinitionShaped::getInput(const CraftOutput &output, IGameDef *gamedef) const
{
return CraftInput(CRAFT_METHOD_NORMAL,width,craftGetItems(recipe,gamedef));
}
void CraftDefinitionShaped::decrementInput(CraftInput &input, std::vector<ItemStack> &output_replacements,
IGameDef *gamedef) const
{
craftDecrementOrReplaceInput(input, output_replacements, replacements, gamedef);
}
CraftHashType CraftDefinitionShaped::getHashType() const
{
assert(hash_inited); // Pre-condition
bool has_group = false;
for (size_t i = 0; i < recipe_names.size(); i++) {
if (isGroupRecipeStr(recipe_names[i])) {
has_group = true;
break;
}
}
if (has_group)
return CRAFT_HASH_TYPE_COUNT;
else
return CRAFT_HASH_TYPE_ITEM_NAMES;
}
u64 CraftDefinitionShaped::getHash(CraftHashType type) const
{
assert(hash_inited); // Pre-condition
assert((type == CRAFT_HASH_TYPE_ITEM_NAMES)
|| (type == CRAFT_HASH_TYPE_COUNT)); // Pre-condition
std::vector<std::string> rec_names = recipe_names;
std::sort(rec_names.begin(), rec_names.end());
return getHashForGrid(type, rec_names);
}
void CraftDefinitionShaped::initHash(IGameDef *gamedef)
{
if (hash_inited)
return;
hash_inited = true;
recipe_names = craftGetItemNames(recipe, 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();
}
/*
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;
// Filter empty items out of input
std::vector<std::string> input_filtered;
for (std::vector<ItemStack>::size_type i = 0;
i < input.items.size(); i++) {
const ItemStack &item = input.items[i];
if (item.name != "")
input_filtered.push_back(item.name);
}
// If there is a wrong number of items in input, no match
if (input_filtered.size() != recipe.size()) {
/*dstream<<"Number of input items ("<<input_filtered.size()
<<") does not match recipe size ("<<recipe.size()<<") "
<<"of recipe with output="<<output<<std::endl;*/
return false;
}
std::vector<std::string> recipe_copy;
if (hash_inited)
recipe_copy = recipe_names;
else {
recipe_copy = craftGetItemNames(recipe, gamedef);
std::sort(recipe_copy.begin(), recipe_copy.end());
}
// Try with all permutations of the recipe,
// start from the lexicographically first permutation (=sorted),
// recipe_names is pre-sorted
do {
// If all items match, the recipe matches
bool all_match = true;
//dstream<<"Testing recipe (output="<<output<<"):";
for (size_t i=0; i<recipe.size(); i++) {
//dstream<<" ("<<input_filtered[i]<<" == "<<recipe_copy[i]<<")";
if (!inputItemMatchesRecipe(input_filtered[i], recipe_copy[i],
gamedef->idef())) {
all_match = false;
break;
}
}
//dstream<<" -> match="<<all_match<<std::endl;
if (all_match)
return true;
} while (std::next_permutation(recipe_copy.begin(), recipe_copy.end()));
return false;
}
CraftOutput CraftDefinitionShapeless::getOutput(const CraftInput &input, IGameDef *gamedef) const
{
return CraftOutput(output, 0);
}
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CraftInput CraftDefinitionShapeless::getInput(const CraftOutput &output, IGameDef *gamedef) const
{
return CraftInput(CRAFT_METHOD_NORMAL, 0, craftGetItems(recipe, gamedef));
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}
void CraftDefinitionShapeless::decrementInput(CraftInput &input, std::vector<ItemStack> &output_replacements,
IGameDef *gamedef) const
{
craftDecrementOrReplaceInput(input, output_replacements, replacements, gamedef);
}
CraftHashType CraftDefinitionShapeless::getHashType() const
{
assert(hash_inited); // Pre-condition
bool has_group = false;
for (size_t i = 0; i < recipe_names.size(); i++) {
if (isGroupRecipeStr(recipe_names[i])) {
has_group = true;
break;
}
}
if (has_group)
return CRAFT_HASH_TYPE_COUNT;
else
return CRAFT_HASH_TYPE_ITEM_NAMES;
}
u64 CraftDefinitionShapeless::getHash(CraftHashType type) const
{
assert(hash_inited); // Pre-condition
assert(type == CRAFT_HASH_TYPE_ITEM_NAMES
|| type == CRAFT_HASH_TYPE_COUNT); // Pre-condition
return getHashForGrid(type, recipe_names);
}
void CraftDefinitionShapeless::initHash(IGameDef *gamedef)
{
if (hash_inited)
return;
hash_inited = true;
recipe_names = craftGetItemNames(recipe, gamedef);
std::sort(recipe_names.begin(), recipe_names.end());
}
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();
}
/*
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>::size_type i = 0;
i < input.items.size(); i++) {
const ItemStack &item = input.items[i];
if (!item.empty()) {
if (item1.empty())
item1 = item;
else if (item2.empty())
item2 = item;
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>::size_type i = 0;
i < input.items.size(); i++) {
const ItemStack &item = input.items[i];
if (!item.empty()) {
if (item1.empty())
item1 = item;
else if (item2.empty())
item2 = item;
}
}
ItemStack repaired = craftToolRepair(item1, item2, additional_wear, gamedef);
return CraftOutput(repaired.getItemString(), 0);
}
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CraftInput CraftDefinitionToolRepair::getInput(const CraftOutput &output, IGameDef *gamedef) const
{
std::vector<ItemStack> stack;
stack.push_back(ItemStack());
return CraftInput(CRAFT_METHOD_COOKING, additional_wear, stack);
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}
void CraftDefinitionToolRepair::decrementInput(CraftInput &input, std::vector<ItemStack> &output_replacements,
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();
}
/*
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;
// Filter empty items out of input
std::vector<std::string> input_filtered;
for (std::vector<ItemStack>::size_type i = 0;
i < input.items.size(); i++) {
const std::string &name = input.items[i].name;
if (name != "")
input_filtered.push_back(name);
}
// If there is a wrong number of items in input, no match
if (input_filtered.size() != 1) {
/*dstream<<"Number of input items ("<<input_filtered.size()
<<") does not match recipe size (1) "
<<"of cooking recipe with output="<<output<<std::endl;*/
return false;
}
// Check the single input item
return inputItemMatchesRecipe(input_filtered[0], recipe, gamedef->idef());
}
CraftOutput CraftDefinitionCooking::getOutput(const CraftInput &input, IGameDef *gamedef) const
{
return CraftOutput(output, cooktime);
}
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CraftInput CraftDefinitionCooking::getInput(const CraftOutput &output, IGameDef *gamedef) const
{
std::vector<std::string> rec;
rec.push_back(recipe);
return CraftInput(CRAFT_METHOD_COOKING,cooktime,craftGetItems(rec,gamedef));
}
void CraftDefinitionCooking::decrementInput(CraftInput &input, std::vector<ItemStack> &output_replacements,
IGameDef *gamedef) const
{
craftDecrementOrReplaceInput(input, output_replacements, replacements, gamedef);
}
CraftHashType CraftDefinitionCooking::getHashType() const
{
if (isGroupRecipeStr(recipe_name))
return CRAFT_HASH_TYPE_COUNT;
else
return CRAFT_HASH_TYPE_ITEM_NAMES;
}
u64 CraftDefinitionCooking::getHash(CraftHashType type) const
{
if (type == CRAFT_HASH_TYPE_ITEM_NAMES) {
return getHashForString(recipe_name);
} else if (type == CRAFT_HASH_TYPE_COUNT) {
return 1;
} else {
//illegal hash type for this CraftDefinition (pre-condition)
assert(false);
return 0;
}
}
void CraftDefinitionCooking::initHash(IGameDef *gamedef)
{
if (hash_inited)
return;
hash_inited = true;
recipe_name = craftGetItemName(recipe, gamedef);
}
std::string CraftDefinitionCooking::dump() const
{
std::ostringstream os(std::ios::binary);
os << "(cooking, output=\"" << output
<< "\", recipe=\"" << recipe
<< "\", cooktime=" << cooktime << ")"
<< ", replacements=" << replacements.dump() << ")";
return os.str();
}
/*
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;
// Filter empty items out of input
std::vector<std::string> input_filtered;
for (std::vector<ItemStack>::size_type i = 0;
i < input.items.size(); i++) {
const std::string &name = input.items[i].name;
if (name != "")
input_filtered.push_back(name);
}
// If there is a wrong number of items in input, no match
if (input_filtered.size() != 1) {
/*dstream<<"Number of input items ("<<input_filtered.size()
<<") does not match recipe size (1) "
<<"of fuel recipe with burntime="<<burntime<<std::endl;*/
return false;
}
// Check the single input item
return inputItemMatchesRecipe(input_filtered[0], recipe, gamedef->idef());
}
CraftOutput CraftDefinitionFuel::getOutput(const CraftInput &input, IGameDef *gamedef) const
{
return CraftOutput("", burntime);
}
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CraftInput CraftDefinitionFuel::getInput(const CraftOutput &output, IGameDef *gamedef) const
{
std::vector<std::string> rec;
rec.push_back(recipe);
return CraftInput(CRAFT_METHOD_COOKING,(int)burntime,craftGetItems(rec,gamedef));
}
void CraftDefinitionFuel::decrementInput(CraftInput &input, std::vector<ItemStack> &output_replacements,
IGameDef *gamedef) const
{
craftDecrementOrReplaceInput(input, output_replacements, replacements, gamedef);
}
CraftHashType CraftDefinitionFuel::getHashType() const
{
if (isGroupRecipeStr(recipe_name))
return CRAFT_HASH_TYPE_COUNT;
else
return CRAFT_HASH_TYPE_ITEM_NAMES;
}
u64 CraftDefinitionFuel::getHash(CraftHashType type) const
{
if (type == CRAFT_HASH_TYPE_ITEM_NAMES) {
return getHashForString(recipe_name);
} else if (type == CRAFT_HASH_TYPE_COUNT) {
return 1;
} else {
//illegal hash type for this CraftDefinition (pre-condition)
assert(false);
return 0;
}
}
void CraftDefinitionFuel::initHash(IGameDef *gamedef)
{
if (hash_inited)
return;
hash_inited = true;
recipe_name = craftGetItemName(recipe, gamedef);
}
std::string CraftDefinitionFuel::dump() const
{
std::ostringstream os(std::ios::binary);
os << "(fuel, recipe=\"" << recipe
<< "\", burntime=" << burntime << ")"
<< ", replacements=" << replacements.dump() << ")";
return os.str();
}
/*
Craft definition manager
*/
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class CCraftDefManager: public IWritableCraftDefManager
{
public:
CCraftDefManager()
{
m_craft_defs.resize(craft_hash_type_max + 1);
}
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virtual ~CCraftDefManager()
{
clear();
}
virtual bool getCraftResult(CraftInput &input, CraftOutput &output,
std::vector<ItemStack> &output_replacement, 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>::size_type i = 0;
i < input.items.size(); i++) {
if (!input.items[i].empty()) {
all_empty = false;
break;
}
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}
if (all_empty)
return false;
std::vector<std::string> input_names;
input_names = craftGetItemNames(input.items, gamedef);
std::sort(input_names.begin(), input_names.end());
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// Try hash types with increasing collision rate, and return if found.
for (int type = 0; type <= craft_hash_type_max; type++) {
u64 hash = getHashForGrid((CraftHashType) type, input_names);
/*errorstream << "Checking type " << type << " with hash " << hash << std::endl;*/
// We'd like to do "const [...] hash_collisions = m_craft_defs[type][hash];"
// but that doesn't compile for some reason. This does.
std::map<u64, std::vector<CraftDefinition*> >::const_iterator
col_iter = (m_craft_defs[type]).find(hash);
if (col_iter == (m_craft_defs[type]).end())
continue;
const std::vector<CraftDefinition*> &hash_collisions = col_iter->second;
// Walk crafting definitions from back to front, so that later
// definitions can override earlier ones.
for (std::vector<CraftDefinition*>::size_type
i = hash_collisions.size(); i > 0; i--) {
CraftDefinition *def = hash_collisions[i - 1];
/*errorstream << "Checking " << input.dump() << std::endl
<< " against " << def->dump() << std::endl;*/
if (def->check(input, gamedef)) {
// Get output, then decrement input (if requested)
output = def->getOutput(input, gamedef);
if (decrementInput)
def->decrementInput(input, output_replacement, gamedef);
/*errorstream << "Check RETURNS TRUE" << std::endl;*/
return true;
}
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}
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}
return false;
}
virtual std::vector<CraftDefinition*> getCraftRecipes(CraftOutput &output,
IGameDef *gamedef, unsigned limit=0) const
{
std::vector<CraftDefinition*> recipes;
std::map<std::string, std::vector<CraftDefinition*> >::const_iterator
vec_iter = m_output_craft_definitions.find(output.item);
if (vec_iter == m_output_craft_definitions.end())
return recipes;
const std::vector<CraftDefinition*> &vec = vec_iter->second;
recipes.reserve(limit ? MYMIN(limit, vec.size()) : vec.size());
for (std::vector<CraftDefinition*>::size_type i = vec.size();
i > 0; i--) {
CraftDefinition *def = vec[i - 1];
if (limit && recipes.size() >= limit)
break;
recipes.push_back(def);
}
return recipes;
}
virtual std::string dump() const
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{
std::ostringstream os(std::ios::binary);
os << "Crafting definitions:\n";
for (int type = 0; type <= craft_hash_type_max; type++) {
for (std::map<u64, std::vector<CraftDefinition*> >::const_iterator
it = (m_craft_defs[type]).begin();
it != (m_craft_defs[type]).end(); it++) {
for (std::vector<CraftDefinition*>::size_type i = 0;
i < it->second.size(); i++) {
os << "type " << type
<< " hash " << it->first
<< " def " << it->second[i]->dump()
<< "\n";
}
}
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}
return os.str();
}
virtual void registerCraft(CraftDefinition *def, IGameDef *gamedef)
{
verbosestream << "registerCraft: registering craft definition: "
<< def->dump() << std::endl;
m_craft_defs[(int) CRAFT_HASH_TYPE_UNHASHED][0].push_back(def);
CraftInput input;
std::string output_name = craftGetItemName(
def->getOutput(input, gamedef).item, gamedef);
m_output_craft_definitions[output_name].push_back(def);
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}
virtual void clear()
{
for (int type = 0; type <= craft_hash_type_max; type++) {
for (std::map<u64, std::vector<CraftDefinition*> >::iterator
it = m_craft_defs[type].begin();
it != m_craft_defs[type].end(); it++) {
for (std::vector<CraftDefinition*>::iterator
iit = it->second.begin();
iit != it->second.end(); ++iit) {
delete *iit;
}
it->second.clear();
}
m_craft_defs[type].clear();
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}
m_output_craft_definitions.clear();
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}
virtual void initHashes(IGameDef *gamedef)
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{
// Move the CraftDefs from the unhashed layer into layers higher up.
std::vector<CraftDefinition *> &unhashed =
m_craft_defs[(int) CRAFT_HASH_TYPE_UNHASHED][0];
for (std::vector<CraftDefinition*>::size_type i = 0;
i < unhashed.size(); i++) {
CraftDefinition *def = unhashed[i];
// Initialize and get the definition's hash
def->initHash(gamedef);
CraftHashType type = def->getHashType();
u64 hash = def->getHash(type);
// Enter the definition
m_craft_defs[type][hash].push_back(def);
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}
unhashed.clear();
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}
private:
//TODO: change both maps to unordered_map when c++11 can be used
std::vector<std::map<u64, std::vector<CraftDefinition*> > > m_craft_defs;
std::map<std::string, std::vector<CraftDefinition*> > m_output_craft_definitions;
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};
IWritableCraftDefManager* createCraftDefManager()
{
return new CCraftDefManager();
}