C++ ServerActiveObject::getBasePosition方法代码示例

// punch(self, puncher, time_from_last_punch, tool_capabilities, dir)
int ObjectRef::l_punch(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ObjectRef *puncher_ref = checkobject(L, 2);
	ServerActiveObject *co = getobject(ref);
	ServerActiveObject *puncher = getobject(puncher_ref);
	if(co == NULL) return 0;
	if(puncher == NULL) return 0;
	v3f dir;
	if(lua_type(L, 5) != LUA_TTABLE)
		dir = co->getBasePosition() - puncher->getBasePosition();
	else
		dir = read_v3f(L, 5);
	float time_from_last_punch = 1000000;
	if(lua_isnumber(L, 3))
		time_from_last_punch = lua_tonumber(L, 3);
	ToolCapabilities toolcap = read_tool_capabilities(L, 4);
	dir.normalize();

	s16 src_original_hp = co->getHP();
	s16 dst_origin_hp = puncher->getHP();

	// Do it
	co->punch(dir, &toolcap, puncher, time_from_last_punch);

	// If the punched is a player, and its HP changed
	if (src_original_hp != co->getHP() &&
			co->getType() == ACTIVEOBJECT_TYPE_PLAYER) {
		getServer(L)->SendPlayerHPOrDie(((PlayerSAO*)co)->getPeerID(),
				co->getHP() == 0);
	}

	// If the puncher is a player, and its HP changed
	if (dst_origin_hp != puncher->getHP() &&
			puncher->getType() == ACTIVEOBJECT_TYPE_PLAYER) {
		getServer(L)->SendPlayerHPOrDie(((PlayerSAO*)puncher)->getPeerID(),
				puncher->getHP() == 0);
	}
	return 0;
}

// punch(self, puncher, time_from_last_punch, tool_capabilities, dir)
int ObjectRef::l_punch(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ObjectRef *puncher_ref = checkobject(L, 2);
	ServerActiveObject *co = getobject(ref);
	ServerActiveObject *puncher = getobject(puncher_ref);
	if(co == NULL) return 0;
	if(puncher == NULL) return 0;
	v3f dir;
	if(lua_type(L, 5) != LUA_TTABLE)
		dir = co->getBasePosition() - puncher->getBasePosition();
	else
		dir = read_v3f(L, 5);
	float time_from_last_punch = 1000000;
	if(lua_isnumber(L, 3))
		time_from_last_punch = lua_tonumber(L, 3);
	ToolCapabilities toolcap = read_tool_capabilities(L, 4);
	dir.normalize();
	// Do it
	co->punch(dir, &toolcap, puncher, time_from_last_punch);
	return 0;
}

// get_pos(self)
// returns: {x=num, y=num, z=num}
int ObjectRef::l_get_pos(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *co = getobject(ref);
	if (co == NULL) return 0;
	v3f pos = co->getBasePosition() / BS;
	lua_newtable(L);
	lua_pushnumber(L, pos.X);
	lua_setfield(L, -2, "x");
	lua_pushnumber(L, pos.Y);
	lua_setfield(L, -2, "y");
	lua_pushnumber(L, pos.Z);
	lua_setfield(L, -2, "z");
	return 1;
}

// This is probably very useless
void spawnRandomObjects(MapBlock *block)
{
	for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
	for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
	{
		bool last_node_walkable = false;
		for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
		{
			v3s16 p(x0,y0,z0);
			MapNode n = block->getNodeNoEx(p);
			if(n.getContent() == CONTENT_IGNORE)
				continue;
			if(content_features(n).liquid_type != LIQUID_NONE)
				continue;
			if(content_features(n).walkable)
			{
				last_node_walkable = true;
				continue;
			}
			if(last_node_walkable)
			{
				// If block contains light information
				if(content_features(n).param_type == CPT_LIGHT)
				{
					if(n.getLight(LIGHTBANK_DAY) <= 5)
					{
						if(myrand() % 1000 == 0)
						{
							v3f pos_f = intToFloat(p+block->getPosRelative(), BS);
							pos_f.Y -= BS*0.4;
							ServerActiveObject *obj = new Oerkki1SAO(NULL,0,pos_f);
							std::string data = obj->getStaticData();
							StaticObject s_obj(obj->getType(),
									obj->getBasePosition(), data);
							// Add one
							block->m_static_objects.insert(0, s_obj);
							delete obj;
							block->setChangedFlag();
						}
					}
				}
			}
			last_node_walkable = false;
		}
	}
}

/*
	Finds out what objects have been removed from
	inside a radius around a position
*/
void ServerEnvironment::getRemovedActiveObjects(v3s16 pos, s16 radius,
		core::map<u16, bool> &current_objects,
		core::map<u16, bool> &removed_objects)
{
	v3f pos_f = intToFloat(pos, BS);
	f32 radius_f = radius * BS;
	/*
		Go through current_objects; object is removed if:
		- object is not found in m_active_objects (this is actually an
		  error condition; objects should be set m_removed=true and removed
		  only after all clients have been informed about removal), or
		- object has m_removed=true, or
		- object is too far away
	*/
	for(core::map<u16, bool>::Iterator
			i = current_objects.getIterator();
			i.atEnd()==false; i++)
	{
		u16 id = i.getNode()->getKey();
		ServerActiveObject *object = getActiveObject(id);
		if(object == NULL)
		{
			dstream<<"WARNING: ServerEnvironment::getRemovedActiveObjects():"
					<<" object in current_objects is NULL"<<std::endl;
		}
		else if(object->m_removed == false)
		{
			f32 distance_f = object->getBasePosition().getDistanceFrom(pos_f);
			/*dstream<<"removed == false"
					<<"distance_f = "<<distance_f
					<<", radius_f = "<<radius_f<<std::endl;*/
			if(distance_f < radius_f)
			{
				// Not removed
				continue;
			}
		}
		removed_objects.insert(id, false);
	}
}

/*
	Finds out what new objects have been added to
	inside a radius around a position
*/
void ServerEnvironment::getAddedActiveObjects(v3s16 pos, s16 radius,
		core::map<u16, bool> &current_objects,
		core::map<u16, bool> &added_objects)
{
	v3f pos_f = intToFloat(pos, BS);
	f32 radius_f = radius * BS;
	/*
		Go through the object list,
		- discard m_removed objects,
		- discard objects that are too far away,
		- discard objects that are found in current_objects.
		- add remaining objects to added_objects
	*/
	for(core::map<u16, ServerActiveObject*>::Iterator
			i = m_active_objects.getIterator();
			i.atEnd()==false; i++)
	{
		u16 id = i.getNode()->getKey();
		// Get object
		ServerActiveObject *object = i.getNode()->getValue();
		if(object == NULL)
			continue;
		// Discard if removed
		if(object->m_removed)
			continue;
		// Discard if too far
		f32 distance_f = object->getBasePosition().getDistanceFrom(pos_f);
		if(distance_f > radius_f)
			continue;
		// Discard if already on current_objects
		core::map<u16, bool>::Node *n;
		n = current_objects.find(id);
		if(n != NULL)
			continue;
		// Add to added_objects
		added_objects.insert(id, false);
	}
}

/*
	Convert objects that are not in active blocks to static.

	If m_known_by_count != 0, active object is not deleted, but static
	data is still updated.

	If force_delete is set, active object is deleted nevertheless. It
	shall only be set so in the destructor of the environment.
*/
void ServerEnvironment::deactivateFarObjects(bool force_delete)
{
	core::list<u16> objects_to_remove;
	for(core::map<u16, ServerActiveObject*>::Iterator
			i = m_active_objects.getIterator();
			i.atEnd()==false; i++)
	{
		ServerActiveObject* obj = i.getNode()->getValue();
		u16 id = i.getNode()->getKey();
		v3f objectpos = obj->getBasePosition();

		// This shouldn't happen but check it
		if(obj == NULL)
		{
			dstream<<"WARNING: NULL object found in ServerEnvironment"
					<<std::endl;
			assert(0);
			continue;
		}

		// The block in which the object resides in
		v3s16 blockpos_o = getNodeBlockPos(floatToInt(objectpos, BS));
		
		// If block is active, don't remove
		if(m_active_blocks.contains(blockpos_o))
			continue;

		/*
			Update the static data
		*/

		// Delete old static object
		MapBlock *oldblock = NULL;
		if(obj->m_static_exists)
		{
			MapBlock *block = m_map->getBlockNoCreateNoEx
					(obj->m_static_block);
			if(block)
			{
				block->m_static_objects.remove(id);
				oldblock = block;
			}
		}
		// Create new static object
		std::string staticdata = obj->getStaticData();
		StaticObject s_obj(obj->getType(), objectpos, staticdata);
		// Add to the block where the object is located in
		v3s16 blockpos = getNodeBlockPos(floatToInt(objectpos, BS));
		// Get or generate the block
		MapBlock *block = m_map->emergeBlock(blockpos);

		/*MapBlock *block = m_map->getBlockNoCreateNoEx(blockpos);
		if(block == NULL)
		{
			// Block not found. Is the old block still ok?
			if(oldblock)
				block = oldblock;
			// Load from disk or generate
			else
				block = m_map->emergeBlock(blockpos);
		}*/

		if(block)
		{
			block->m_static_objects.insert(0, s_obj);
			block->setChangedFlag();
			obj->m_static_exists = true;
			obj->m_static_block = block->getPos();
		}
		else{
			dstream<<"WARNING: ServerEnv: Could not find or generate "
					<<"a block for storing static object"<<std::endl;
			obj->m_static_exists = false;
			continue;
		}

		/*
			Delete active object if not known by some client,
			else set pending deactivation
		*/

		// If known by some client, don't delete.
		if(obj->m_known_by_count > 0 && force_delete == false)
		{
			obj->m_pending_deactivation = true;
			continue;
		}
		
		/*dstream<<"INFO: Server: Stored static data. Deleting object."
				<<std::endl;*/
		// Delete active object
//.........这里部分代码省略.........