summaryrefslogtreecommitdiff
path: root/src/mapgen.cpp
diff options
context:
space:
mode:
authorkwolekr <kwolekr@minetest.net>2015-03-30 23:40:35 -0400
committerkwolekr <kwolekr@minetest.net>2015-03-31 01:11:51 -0400
commited10005d381580440558dc49277b4d350f081283 (patch)
treea1ac2b831d883f6c43193a1c2a55860bf7e0d6ed /src/mapgen.cpp
parent6a48844eba16fb955ef4992bef539af66c595d0c (diff)
downloadminetest-ed10005d381580440558dc49277b4d350f081283.tar.gz
minetest-ed10005d381580440558dc49277b4d350f081283.tar.bz2
minetest-ed10005d381580440558dc49277b4d350f081283.zip
GenElementManager: Pass opaque handles to Lua and rename to ObjDefManager
Add core.clear_registered_schematics() and refactor schematics somewhat
Diffstat (limited to 'src/mapgen.cpp')
-rw-r--r--src/mapgen.cpp153
1 files changed, 115 insertions, 38 deletions
diff --git a/src/mapgen.cpp b/src/mapgen.cpp
index 851f018ee..fcde5bdb8 100644
--- a/src/mapgen.cpp
+++ b/src/mapgen.cpp
@@ -36,11 +36,10 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "treegen.h"
#include "serialization.h"
#include "util/serialize.h"
+#include "util/numeric.h"
#include "filesys.h"
#include "log.h"
-const char *GenElementManager::ELEMENT_TITLE = "element";
-
FlagDesc flagdesc_mapgen[] = {
{"trees", MG_TREES},
{"caves", MG_CAVES},
@@ -64,6 +63,7 @@ FlagDesc flagdesc_gennotify[] = {
///////////////////////////////////////////////////////////////////////////////
+
Mapgen::Mapgen()
{
generating = false;
@@ -431,85 +431,162 @@ void GenerateNotifier::getEvents(
///////////////////////////////////////////////////////////////////////////////
-GenElementManager::GenElementManager(IGameDef *gamedef)
+ObjDefManager::ObjDefManager(IGameDef *gamedef, ObjDefType type)
{
+ m_objtype = type;
m_ndef = gamedef->getNodeDefManager();
}
-GenElementManager::~GenElementManager()
+ObjDefManager::~ObjDefManager()
{
- for (size_t i = 0; i != m_elements.size(); i++)
- delete m_elements[i];
+ for (size_t i = 0; i != m_objects.size(); i++)
+ delete m_objects[i];
}
-u32 GenElementManager::add(GenElement *elem)
+ObjDefHandle ObjDefManager::add(ObjDef *obj)
{
- size_t nelem = m_elements.size();
+ assert(obj);
- for (size_t i = 0; i != nelem; i++) {
- if (m_elements[i] == NULL) {
- elem->id = i;
- m_elements[i] = elem;
- return i;
- }
- }
+ if (obj->name.length() && getByName(obj->name))
+ return OBJDEF_INVALID_HANDLE;
+
+ u32 index = addRaw(obj);
+ if (index == OBJDEF_INVALID_INDEX)
+ return OBJDEF_INVALID_HANDLE;
- if (nelem >= this->ELEMENT_LIMIT)
+ obj->handle = createHandle(index, m_objtype, obj->uid);
+ return obj->handle;
+}
+
+
+ObjDef *ObjDefManager::get(ObjDefHandle handle) const
+{
+ u32 index = validateHandle(handle);
+ return (index != OBJDEF_INVALID_INDEX) ? getRaw(index) : NULL;
+}
+
+
+ObjDef *ObjDefManager::set(ObjDefHandle handle, ObjDef *obj)
+{
+ u32 index = validateHandle(handle);
+ return (index != OBJDEF_INVALID_INDEX) ? setRaw(index, obj) : NULL;
+}
+
+
+u32 ObjDefManager::addRaw(ObjDef *obj)
+{
+ size_t nobjects = m_objects.size();
+ if (nobjects >= OBJDEF_MAX_ITEMS)
return -1;
- elem->id = nelem;
- m_elements.push_back(elem);
+ obj->index = nobjects;
+
+ // Ensure UID is nonzero so that a valid handle == OBJDEF_INVALID_HANDLE
+ // is not possible. The slight randomness bias isn't very significant.
+ obj->uid = myrand() & OBJDEF_UID_MASK;
+ if (obj->uid == 0)
+ obj->uid = 1;
+
+ m_objects.push_back(obj);
- verbosestream << "GenElementManager: added " << this->ELEMENT_TITLE
- << " element '" << elem->name << "'" << std::endl;
+ infostream << "ObjDefManager: added " << getObjectTitle()
+ << ": name=\"" << obj->name
+ << "\" index=" << obj->index
+ << " uid=" << obj->uid
+ << std::endl;
- return nelem;
+ return nobjects;
}
-GenElement *GenElementManager::get(u32 id)
+ObjDef *ObjDefManager::getRaw(u32 index) const
{
- return (id < m_elements.size()) ? m_elements[id] : NULL;
+ return m_objects[index];
}
-GenElement *GenElementManager::getByName(const std::string &name)
+ObjDef *ObjDefManager::setRaw(u32 index, ObjDef *obj)
{
- for (size_t i = 0; i != m_elements.size(); i++) {
- GenElement *elem = m_elements[i];
- if (elem && name == elem->name)
- return elem;
+ ObjDef *old_obj = m_objects[index];
+ m_objects[index] = obj;
+ return old_obj;
+}
+
+
+ObjDef *ObjDefManager::getByName(const std::string &name) const
+{
+ for (size_t i = 0; i != m_objects.size(); i++) {
+ ObjDef *obj = m_objects[i];
+ if (obj && !strcasecmp(name.c_str(), obj->name.c_str()))
+ return obj;
}
return NULL;
}
-GenElement *GenElementManager::update(u32 id, GenElement *elem)
+void ObjDefManager::clear()
{
- if (id >= m_elements.size())
- return NULL;
+ for (size_t i = 0; i != m_objects.size(); i++)
+ delete m_objects[i];
- GenElement *old_elem = m_elements[id];
- m_elements[id] = elem;
- return old_elem;
+ m_objects.clear();
}
-GenElement *GenElementManager::remove(u32 id)
+u32 ObjDefManager::validateHandle(ObjDefHandle handle) const
{
- return update(id, NULL);
+ ObjDefType type;
+ u32 index;
+ u32 uid;
+
+ bool is_valid =
+ (handle != OBJDEF_INVALID_HANDLE) &&
+ decodeHandle(handle, &index, &type, &uid) &&
+ (type == m_objtype) &&
+ (index < m_objects.size()) &&
+ (m_objects[index]->uid == uid);
+
+ return is_valid ? index : -1;
}
-void GenElementManager::clear()
+ObjDefHandle ObjDefManager::createHandle(u32 index, ObjDefType type, u32 uid)
{
- m_elements.clear();
+ ObjDefHandle handle = 0;
+ set_bits(&handle, 0, 18, index);
+ set_bits(&handle, 18, 6, type);
+ set_bits(&handle, 24, 7, uid);
+
+ u32 parity = calc_parity(handle);
+ set_bits(&handle, 31, 1, parity);
+
+ return handle ^ OBJDEF_HANDLE_SALT;
}
+bool ObjDefManager::decodeHandle(ObjDefHandle handle, u32 *index,
+ ObjDefType *type, u32 *uid)
+{
+ handle ^= OBJDEF_HANDLE_SALT;
+
+ u32 parity = get_bits(handle, 31, 1);
+ set_bits(&handle, 31, 1, 0);
+ if (parity != calc_parity(handle))
+ return false;
+
+ *index = get_bits(handle, 0, 18);
+ *type = (ObjDefType)get_bits(handle, 18, 6);
+ *uid = get_bits(handle, 24, 7);
+ return true;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+
+
void MapgenParams::load(const Settings &settings)
{
std::string seed_str;