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 <unordered_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 "util/strfnd.h"
#include "exceptions.h"
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inline bool isGroupRecipeStr(const std::string &rec_name)
{
return str_starts_with(rec_name, "group:");
}
static bool hasGroupItem(const std::vector<std::string> &recipe)
{
for (const auto &item : recipe) {
if (isGroupRecipeStr(item))
return true;
}
return false;
}
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 (const std::string &grid_name : grid_names) {
if (!grid_name.empty()) {
os << (is_first ? "" : "\n") << grid_name;
is_first = false;
}
}
return getHashForString(os.str());
} case CRAFT_HASH_TYPE_COUNT: {
u64 cnt = 0;
for (const std::string &grid_name : grid_names)
if (!grid_name.empty())
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.at_end());
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;
result.reserve(itemstrings.size());
for (const auto &itemstring : itemstrings) {
result.push_back(craftGetItemName(itemstring, 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;
result.reserve(items.size());
for (const auto &item : items) {
result.push_back(item.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;
result.reserve(items.size());
for (const auto &item : items) {
result.emplace_back(std::string(item), (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 (const std::string &item : items) {
// Is this an actual item?
if (!item.empty()) {
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 (auto &item : input.items) {
if (item.count != 0)
item.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 (auto &item : input.items) {
// Find an appropriate replacement
bool found_replacement = false;
for (auto j = pairs.begin(); j != pairs.end(); ++j) {
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if (inputItemMatchesRecipe(item.name, j->first, gamedef->idef())) {
if (item.count == 1) {
item.deSerialize(j->second, gamedef->idef());
found_replacement = true;
pairs.erase(j);
break;
}
ItemStack rep;
rep.deSerialize(j->second, gamedef->idef());
item.remove(1);
found_replacement = true;
pairs.erase(j);
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
*/
bool CraftInput::empty() const
{
for (const auto &item : items) {
if (!item.empty())
return false;
}
return true;
}
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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 (const auto &repl_p : pairs) {
os << sep
<< '"' << (repl_p.first)
<< "\"=>\"" << (repl_p.second) << '"';
sep = ",";
}
os << "}";
return os.str();
}
/*
CraftDefinitionShaped
*/
CraftDefinitionShaped::CraftDefinitionShaped(
const std::string &output_,
unsigned int width_,
const std::vector<std::string> &recipe_,
const CraftReplacements &replacements_):
output(output_), width(width_), recipe(recipe_), replacements(replacements_)
{
if (hasGroupItem(recipe))
priority = PRIORITY_SHAPED_AND_GROUPS;
else
priority = PRIORITY_SHAPED;
}
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.emplace_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.emplace_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);
}
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);
if (hasGroupItem(recipe_names))
hash_type = CRAFT_HASH_TYPE_COUNT;
else
hash_type = CRAFT_HASH_TYPE_ITEM_NAMES;
}
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
*/
CraftDefinitionShapeless::CraftDefinitionShapeless(
const std::string &output_,
const std::vector<std::string> &recipe_,
const CraftReplacements &replacements_):
output(output_), recipe(recipe_), replacements(replacements_)
{
if (hasGroupItem(recipe))
priority = PRIORITY_SHAPELESS_AND_GROUPS;
else
priority = PRIORITY_SHAPELESS;
}
std::string CraftDefinitionShapeless::getName() const
{
return "shapeless";
}
constexpr u16 SHAPELESS_GROUPS_MAX = 30000;
// Checks if there's a matching that matches all nodes in a given bipartite graph.
// bip_graph has graph_size nodes on each side. It is stored as list of lists of
// neighbors from one side.
// See https://en.wikipedia.org/w/index.php?title=Hopcroft-Karp_algorithm for
// details.
static bool hopcroft_karp_can_match_all(const std::vector<std::vector<u16>> &bip_graph)
{
assert(bip_graph.size() <= SHAPELESS_GROUPS_MAX);
u16 graph_size = bip_graph.size();
const u16 nil = graph_size; // nil / dummy index
constexpr u16 inf = UINT16_MAX; // bigger than any path length (> SHAPELESS_GROUPS_MAX * 2)
auto pair_u = std::make_unique<u16[]>(graph_size + 1); // for each u (or nil) the matched v (or nil)
auto pair_v = std::make_unique<u16[]>(graph_size + 1); // for each v (or nil) the matched u (or nil)
auto dist = std::make_unique<u16[]>(graph_size + 1); // for each u (or nil) the bfs distance
u16 num_matched;
std::queue<u16> queue{};
// calculates distances from unmatched nodes for augmentation paths until
// dummy is reached
// returns false if dummy can't be reached (and hence there are no further
// augmentation paths)
auto do_bfs = [&]() {
assert(queue.empty());
// enqueue all unmatched, give inf dist to the rest
for (u16 u = 0; u < graph_size; ++u) {
if (pair_u[u] == nil) {
dist[u] = 0;
queue.push(u);
} else {
dist[u] = inf;
}
}
dist[nil] = inf;
while (!queue.empty()) {
u16 u = queue.front();
queue.pop();
if (dist[u] < dist[nil]) { // if dummy not yet reached
for (u16 v : bip_graph[u]) { // for all adjanced of u
u16 u_back = pair_v[v];
// if u_back unvisited, go there
if (dist[u_back] == inf) {
dist[u_back] = dist[u] + 1;
queue.push(u_back);
}
}
}
}
return dist[nil] != inf;
};
// tries to find an augmenting path from u to the dummy
// if successful, swaps all edges along path and returns true
// otherwise returns false
auto do_dfs_raw = [&](u16 u, auto &&recurse) -> bool {
if (u == nil) // dummy => dest reached
return true;
for (u16 v : bip_graph[u]) { // for all adjanced of u
u16 u_back = pair_v[v];
// only walk according to bfs dists
if (dist[u_back] != dist[u] + 1)
continue;
// if walk along u_back reached dummy, swap edges and backtrack
if (recurse(u_back, recurse)) {
pair_v[v] = u;
pair_u[u] = v;
return true;
}
}
// unsuccessful path, don't walk here again
dist[u] = inf;
return false;
};
auto do_dfs = [&](u16 u) {
return do_dfs_raw(u, do_dfs_raw);
};
// everyone starts as matched to dummy
std::fill_n(&pair_u[0], graph_size + 1, nil);
std::fill_n(&pair_v[0], graph_size + 1, nil);
num_matched = 0;
while (do_bfs()) {
// try to match unmatched u nodes
for (u16 u = 0; u < graph_size; ++u) {
if (pair_u[u] == nil) {
if (do_dfs(u)) {
num_matched += 1;
}
}
}
}
return num_matched == graph_size;
}
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 (const auto &item : input.items) {
if (!item.name.empty())
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;
}
// Sort input and recipe
std::sort(input_filtered.begin(), input_filtered.end());
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());
}
// Split recipe in group and non-group
std::vector<std::string> recipe_nogroup;
std::vector<std::string> recipe_onlygroup;
std::partition_copy(recipe_copy.begin(), recipe_copy.end(),
std::back_inserter(recipe_onlygroup),
std::back_inserter(recipe_nogroup),
[](const std::string &name) { return str_starts_with(name, "group:"); });
// Filter out non-group recipe slots, using sorted merge.
// (This prefiltering is only a performance optimization and not strictly
// necessary.)
std::vector<std::string> input_for_group;
std::set_difference(input_filtered.begin(), input_filtered.end(),
recipe_nogroup.begin(), recipe_nogroup.end(),
std::back_inserter(input_for_group));
// All non-group slots must be satisfied
if (input_filtered.size() - input_for_group.size() != recipe_nogroup.size())
return false;
// Find out which recipe slots each input item satisfies. This creates a
// bipartite graph
assert(recipe_onlygroup.size() == input_for_group.size());
if (recipe_onlygroup.size() > SHAPELESS_GROUPS_MAX) {
// SHAPELESS_GROUPS_MAX is large enough that this should never happen by
// accident
errorstream << "Too many groups in shapless craft." << std::endl;
return false;
}
u16 graph_size = recipe_onlygroup.size();
// bip_graph[i] are the group-slots that item i can satisfy
std::vector<std::vector<u16>> bip_graph;
bip_graph.resize(graph_size);
for (u16 i = 0; i < graph_size; ++i) {
std::vector<u16> &neighbors_i = bip_graph[i];
for (u16 j = 0; j < graph_size; ++j) {
if (inputItemMatchesRecipe(input_for_group[i], recipe_onlygroup[j],
gamedef->idef()))
neighbors_i.push_back(j);
}
}
// Check if the maximum cardinality matching of bip_graph matches all items
return hopcroft_karp_can_match_all(bip_graph);
}
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);
}
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());
if (hasGroupItem(recipe_names))
hash_type = CRAFT_HASH_TYPE_COUNT;
else
hash_type = CRAFT_HASH_TYPE_ITEM_NAMES;
}
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
*/
CraftDefinitionToolRepair::CraftDefinitionToolRepair(float additional_wear_):
additional_wear(additional_wear_)
{
priority = PRIORITY_TOOLREPAIR;
}
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
|| itemgroup_get(idef->get(item1.name).groups, "disable_repair") == 1) {
// 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 (const auto &item : input.items) {
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 (const auto &item : input.items) {
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.emplace_back();
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
*/
CraftDefinitionCooking::CraftDefinitionCooking(
const std::string &output_,
const std::string &recipe_,
float cooktime_,
const CraftReplacements &replacements_):
output(output_), recipe(recipe_), cooktime(cooktime_), replacements(replacements_)
{
if (isGroupRecipeStr(recipe))
priority = PRIORITY_SHAPELESS_AND_GROUPS;
else
priority = PRIORITY_SHAPELESS;
}
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 (const auto &item : input.items) {
const std::string &name = item.name;
if (!name.empty())
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
std::string rec_name = craftGetItemName(recipe, gamedef);
return inputItemMatchesRecipe(input_filtered[0], rec_name, 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);
}
u64 CraftDefinitionCooking::getHash(CraftHashType type) const
{
if (type == CRAFT_HASH_TYPE_ITEM_NAMES) {
return getHashForString(recipe_name);
}
if (type == CRAFT_HASH_TYPE_COUNT) {
return 1;
}
// 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);
if (isGroupRecipeStr(recipe_name))
hash_type = CRAFT_HASH_TYPE_COUNT;
else
hash_type = CRAFT_HASH_TYPE_ITEM_NAMES;
}
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
*/
CraftDefinitionFuel::CraftDefinitionFuel(
const std::string &recipe_,
float burntime_,
const CraftReplacements &replacements_):
recipe(recipe_), burntime(burntime_), replacements(replacements_)
{
if (isGroupRecipeStr(recipe_name))
priority = PRIORITY_SHAPELESS_AND_GROUPS;
else
priority = PRIORITY_SHAPELESS;
}
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 (const auto &item : input.items) {
const std::string &name = item.name;
if (!name.empty())
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
std::string rec_name = craftGetItemName(recipe, gamedef);
return inputItemMatchesRecipe(input_filtered[0], rec_name, 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);
}
u64 CraftDefinitionFuel::getHash(CraftHashType type) const
{
if (type == CRAFT_HASH_TYPE_ITEM_NAMES) {
return getHashForString(recipe_name);
}
if (type == CRAFT_HASH_TYPE_COUNT) {
return 1;
}
// 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);
if (isGroupRecipeStr(recipe_name))
hash_type = CRAFT_HASH_TYPE_COUNT;
else
hash_type = CRAFT_HASH_TYPE_ITEM_NAMES;
}
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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{
if (input.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
// while remembering the latest, highest priority recipe.
CraftDefinition::RecipePriority priority_best =
CraftDefinition::PRIORITY_NO_RECIPE;
CraftDefinition *def_best = nullptr;
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.
auto 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;*/
CraftDefinition::RecipePriority priority = def->getPriority();
if (priority > priority_best
&& def->check(input, gamedef)) {
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// Check if the crafted node/item exists
CraftOutput out = def->getOutput(input, gamedef);
ItemStack is;
is.deSerialize(out.item, gamedef->idef());
if (!is.isKnown(gamedef->idef())) {
infostream << "trying to craft non-existent "
<< out.item << ", ignoring recipe" << std::endl;
continue;
}
output = out;
priority_best = priority;
def_best = def;
}
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}
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}
if (priority_best == CraftDefinition::PRIORITY_NO_RECIPE)
return false;
if (decrementInput)
def_best->decrementInput(input, output_replacement, gamedef);
return true;
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}
virtual std::vector<CraftDefinition*> getCraftRecipes(CraftOutput &output,
IGameDef *gamedef, unsigned limit=0) const
{
std::vector<CraftDefinition*> recipes;
auto 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 bool clearCraftsByOutput(const CraftOutput &output, IGameDef *gamedef)
{
auto to_clear = m_output_craft_definitions.find(output.item);
if (to_clear == m_output_craft_definitions.end())
return false;
for (auto def : to_clear->second) {
// Recipes are not yet hashed at this point
std::vector<CraftDefinition *> &defs = m_craft_defs[(int)CRAFT_HASH_TYPE_UNHASHED][0];
defs.erase(std::remove(defs.begin(), defs.end(), def), defs.end());
delete def;
}
m_output_craft_definitions.erase(to_clear);
return true;
}
virtual bool clearCraftsByInput(const CraftInput &input, IGameDef *gamedef)
{
if (input.empty())
return false;
// Recipes are not yet hashed at this point
std::vector<CraftDefinition *> &defs = m_craft_defs[(int)CRAFT_HASH_TYPE_UNHASHED][0];
std::unordered_set<const CraftDefinition *> defs_to_remove;
std::vector<CraftDefinition *> new_defs;
for (auto def : defs) {
if (def->check(input, gamedef))
defs_to_remove.insert(def);
else
new_defs.push_back(def);
}
if (!defs_to_remove.empty()) {
for (auto def : defs_to_remove)
delete def;
defs.swap(new_defs);
for (auto &output : m_output_craft_definitions) {
std::vector<CraftDefinition *> &outdefs = output.second;
outdefs.erase(std::remove_if(outdefs.begin(), outdefs.end(), [&](const CraftDefinition* def) {
return defs_to_remove.find(def) != defs_to_remove.end();
}), outdefs.end());
}
}
return !defs_to_remove.empty();
}
virtual std::string dump() const
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{
std::ostringstream os(std::ios::binary);
os << "Crafting definitions:\n";
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for (int type = 0; type <= craft_hash_type_max; ++type) {
for (auto 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)
{
TRACESTREAM(<< "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()
{
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for (int type = 0; type <= craft_hash_type_max; ++type) {
for (auto &it : m_craft_defs[type]) {
for (auto &iit : it.second) {
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 (auto def : unhashed) {
// 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:
std::vector<std::unordered_map<u64, std::vector<CraftDefinition*> > >
m_craft_defs;
std::unordered_map<std::string, std::vector<CraftDefinition*> >
m_output_craft_definitions;
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};
IWritableCraftDefManager* createCraftDefManager()
{
return new CCraftDefManager();
}