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Add minetest.get_craft_recipe()

This commit is contained in:
darkrose 2012-07-12 04:46:10 +10:00 committed by Perttu Ahola
parent 08e1d40d6e
commit 38580fbee7
4 changed files with 160 additions and 2 deletions
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7
doc/lua_api.txt
View File

@ -829,6 +829,13 @@ minetest.get_craft_result(input) -> output, decremented_input
^ output.item = ItemStack, if unsuccessful: empty ItemStack
^ output.time = number, if unsuccessful: 0
^ decremented_input = like input
minetest.get_craft_recipe(output) -> input
^ output is a node or item type such as 'default:torch'
^ input.method = 'normal' or 'cooking' or 'fuel'
^ input.width = for example 3
^ input.items = for example { stack 1, stack 2, stack 3, stack 4,
stack 5, stack 6, stack 7, stack 8, stack 9 }
^ input.items = nil if no recipe found
Defaults for the on_* item definition functions:
(These return the leftover itemstack)

90
src/craftdef.cpp
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@ -35,7 +35,7 @@ static bool inputItemMatchesRecipe(const std::string &inp_name,
// Exact name
if(inp_name == rec_name)
return true;
// Group
if(rec_name.substr(0,6) == "group:" && idef->isKnown(inp_name)){
std::string rec_group = rec_name.substr(6);
@ -43,7 +43,7 @@ static bool inputItemMatchesRecipe(const std::string &inp_name,
if(itemgroup_get(def.groups, rec_group) != 0)
return true;
}
// Didn't match
return false;
}
@ -84,6 +84,20 @@ static std::vector<std::string> craftGetItemNames(
return result;
}
// 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>::const_iterator
i = items.begin();
i != items.end(); i++)
{
result.push_back(ItemStack(std::string(*i),(u16)1,(u16)0,"",gamedef->getItemDefManager()));
}
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,
@ -439,6 +453,11 @@ CraftOutput CraftDefinitionShaped::getOutput(const CraftInput &input, IGameDef *
return CraftOutput(output, 0);
}
CraftInput CraftDefinitionShaped::getInput(const CraftOutput &output, IGameDef *gamedef) const
{
return CraftInput(CRAFT_METHOD_NORMAL,width,craftGetItems(recipe,gamedef));
}
void CraftDefinitionShaped::decrementInput(CraftInput &input, IGameDef *gamedef) const
{
craftDecrementOrReplaceInput(input, replacements, gamedef);
@ -507,6 +526,11 @@ CraftOutput CraftDefinitionShapeless::getOutput(const CraftInput &input, IGameDe
return CraftOutput(output, 0);
}
CraftInput CraftDefinitionShapeless::getInput(const CraftOutput &output, IGameDef *gamedef) const
{
return CraftInput(CRAFT_METHOD_NORMAL,0,craftGetItems(recipe,gamedef));
}
void CraftDefinitionShapeless::decrementInput(CraftInput &input, IGameDef *gamedef) const
{
craftDecrementOrReplaceInput(input, replacements, gamedef);
@ -625,6 +649,13 @@ CraftOutput CraftDefinitionToolRepair::getOutput(const CraftInput &input, IGameD
return CraftOutput(repaired.getItemString(), 0);
}
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);
}
void CraftDefinitionToolRepair::decrementInput(CraftInput &input, IGameDef *gamedef) const
{
craftDecrementInput(input, gamedef);
@ -680,6 +711,13 @@ CraftOutput CraftDefinitionCooking::getOutput(const CraftInput &input, IGameDef
return CraftOutput(output, cooktime);
}
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, IGameDef *gamedef) const
{
craftDecrementOrReplaceInput(input, replacements, gamedef);
@ -744,6 +782,13 @@ CraftOutput CraftDefinitionFuel::getOutput(const CraftInput &input, IGameDef *ga
return CraftOutput("", burntime);
}
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, IGameDef *gamedef) const
{
craftDecrementOrReplaceInput(input, replacements, gamedef);
@ -837,6 +882,47 @@ public:
}
return false;
}
virtual bool getCraftRecipe(CraftInput &input, CraftOutput &output,
IGameDef *gamedef) const
{
CraftOutput tmpout;
tmpout.item = "";
tmpout.time = 0;
// If output item is empty, abort.
if(output.item.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 "<<input.dump()<<std::endl
<<" against "<<def->dump()<<std::endl;*/
try {
tmpout = def->getOutput(input, gamedef);
if(tmpout.item.substr(0,output.item.length()) == output.item)
{
// Get output, then decrement input (if requested)
input = def->getInput(output, gamedef);
return true;
}
}
catch(SerializationError &e)
{
errorstream<<"getCraftResult: ERROR: "
<<"Serialization error in recipe "
<<def->dump()<<std::endl;
// then go on with the next craft definition
}
}
return false;
}
virtual std::string dump() const
{
std::ostringstream os(std::ios::binary);

11
src/craftdef.h
View File

@ -130,6 +130,8 @@ public:
// Returns the output structure, meaning depends on crafting method
// The implementation can assume that check(input) returns true
virtual CraftOutput getOutput(const CraftInput &input, IGameDef *gamedef) const=0;
// the inverse of the above
virtual CraftInput getInput(const CraftOutput &output, IGameDef *gamedef) const=0;
// Decreases count of every input item
virtual void decrementInput(CraftInput &input, IGameDef *gamedef) const=0;
@ -164,6 +166,7 @@ public:
virtual std::string getName() const;
virtual bool check(const CraftInput &input, IGameDef *gamedef) const;
virtual CraftOutput getOutput(const CraftInput &input, IGameDef *gamedef) const;
virtual CraftInput getInput(const CraftOutput &output, IGameDef *gamedef) const;
virtual void decrementInput(CraftInput &input, IGameDef *gamedef) const;
virtual std::string dump() const;
@ -205,6 +208,7 @@ public:
virtual std::string getName() const;
virtual bool check(const CraftInput &input, IGameDef *gamedef) const;
virtual CraftOutput getOutput(const CraftInput &input, IGameDef *gamedef) const;
virtual CraftInput getInput(const CraftOutput &output, IGameDef *gamedef) const;
virtual void decrementInput(CraftInput &input, IGameDef *gamedef) const;
virtual std::string dump() const;
@ -242,6 +246,7 @@ public:
virtual std::string getName() const;
virtual bool check(const CraftInput &input, IGameDef *gamedef) const;
virtual CraftOutput getOutput(const CraftInput &input, IGameDef *gamedef) const;
virtual CraftInput getInput(const CraftOutput &output, IGameDef *gamedef) const;
virtual void decrementInput(CraftInput &input, IGameDef *gamedef) const;
virtual std::string dump() const;
@ -281,6 +286,7 @@ public:
virtual std::string getName() const;
virtual bool check(const CraftInput &input, IGameDef *gamedef) const;
virtual CraftOutput getOutput(const CraftInput &input, IGameDef *gamedef) const;
virtual CraftInput getInput(const CraftOutput &output, IGameDef *gamedef) const;
virtual void decrementInput(CraftInput &input, IGameDef *gamedef) const;
virtual std::string dump() const;
@ -320,6 +326,7 @@ public:
virtual std::string getName() const;
virtual bool check(const CraftInput &input, IGameDef *gamedef) const;
virtual CraftOutput getOutput(const CraftInput &input, IGameDef *gamedef) const;
virtual CraftInput getInput(const CraftOutput &output, IGameDef *gamedef) const;
virtual void decrementInput(CraftInput &input, IGameDef *gamedef) const;
virtual std::string dump() const;
@ -349,6 +356,8 @@ public:
// The main crafting function
virtual bool getCraftResult(CraftInput &input, CraftOutput &output,
bool decrementInput, IGameDef *gamedef) const=0;
virtual bool getCraftRecipe(CraftInput &input, CraftOutput &output,
IGameDef *gamedef) const=0;
// Print crafting recipes for debugging
virtual std::string dump() const=0;
@ -365,6 +374,8 @@ public:
// The main crafting function
virtual bool getCraftResult(CraftInput &input, CraftOutput &output,
bool decrementInput, IGameDef *gamedef) const=0;
virtual bool getCraftRecipe(CraftInput &input, CraftOutput &output,
IGameDef *gamedef) const=0;
// Print crafting recipes for debugging
virtual std::string dump() const=0;

54
src/scriptapi.cpp
View File

@ -4558,6 +4558,59 @@ static int l_get_craft_result(lua_State *L)
return 2;
}
// get_craft_recipe(result item)
static int l_get_craft_recipe(lua_State *L)
{
int k = 0;
char tmp[20];
int input_i = 1;
std::string o_item = luaL_checkstring(L,input_i);
IGameDef *gdef = get_server(L);
ICraftDefManager *cdef = gdef->cdef();
CraftInput input;
CraftOutput output(o_item,0);
bool got = cdef->getCraftRecipe(input, output, gdef);
lua_newtable(L); // output table
if(got){
lua_newtable(L);
for(std::vector<ItemStack>::const_iterator
i = input.items.begin();
i != input.items.end(); i++, k++)
{
if (i->empty())
{
continue;
}
sprintf(tmp,"%d",k);
lua_pushstring(L,tmp);
lua_pushstring(L,i->name.c_str());
lua_settable(L, -3);
}
lua_setfield(L, -2, "items");
setintfield(L, -1, "width", input.width);
switch (input.method) {
case CRAFT_METHOD_NORMAL:
lua_pushstring(L,"noraml");
break;
case CRAFT_METHOD_COOKING:
lua_pushstring(L,"cooking");
break;
case CRAFT_METHOD_FUEL:
lua_pushstring(L,"fuel");
break;
default:
lua_pushstring(L,"unknown");
}
lua_setfield(L, -2, "type");
} else {
lua_pushnil(L);
lua_setfield(L, -2, "items");
setintfield(L, -1, "width", 0);
}
return 1;
}
static const struct luaL_Reg minetest_f [] = {
{"debug", l_debug},
{"log", l_log},
@ -4582,6 +4635,7 @@ static const struct luaL_Reg minetest_f [] = {
{"get_password_hash", l_get_password_hash},
{"notify_authentication_modified", l_notify_authentication_modified},
{"get_craft_result", l_get_craft_result},
{"get_craft_recipe", l_get_craft_recipe},
{NULL, NULL}
};