#include "emerge.h"
#include "content_mapnode.h" // For content_mapnode_get_new_name
#include "voxelalgorithms.h"
+#include "porting.h"
#include "profiler.h"
-#include "settings.h" // For g_settings
-#include "main.h" // For g_profiler
+#include "settings.h"
#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},
///////////////////////////////////////////////////////////////////////////////
+
Mapgen::Mapgen()
{
generating = false;
///////////////////////////////////////////////////////////////////////////////
-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;
+
+ 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;
+}
- if (nelem >= this->ELEMENT_LIMIT)
+
+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;
- verbosestream << "GenElementManager: added " << this->ELEMENT_TITLE
- << " element '" << elem->name << "'" << std::endl;
+ m_objects.push_back(obj);
- return nelem;
+ infostream << "ObjDefManager: added " << getObjectTitle()
+ << ": name=\"" << obj->name
+ << "\" index=" << obj->index
+ << " uid=" << obj->uid
+ << std::endl;
+
+ 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;
const char *seed_name = (&settings == g_settings) ? "fixed_map_seed" : "seed";
- if (settings.getNoEx(seed_name, seed_str) && !seed_str.empty()) {
+ if (settings.getNoEx(seed_name, seed_str) && !seed_str.empty())
seed = read_seed(seed_str.c_str());
- } else {
- seed = ((u64)(myrand() & 0xFFFF) << 0) |
- ((u64)(myrand() & 0xFFFF) << 16) |
- ((u64)(myrand() & 0xFFFF) << 32) |
- ((u64)(myrand() & 0xFFFF) << 48);
- }
+ else
+ myrand_bytes(&seed, sizeof(seed));
settings.getNoEx("mg_name", mg_name);
settings.getS16NoEx("water_level", water_level);
projects / minetest.git / blobdiff