C++ writeS16函数代码示例

void ToolCapabilities::serialize(std::ostream &os, u16 protocol_version) const
{
	if(protocol_version <= 17)
		writeU8(os, 1); // version
	else
		writeU8(os, 2); // version
	writeF1000(os, full_punch_interval);
	writeS16(os, max_drop_level);
	writeU32(os, groupcaps.size());
	for(std::map<std::string, ToolGroupCap>::const_iterator
			i = groupcaps.begin(); i != groupcaps.end(); i++){
		const std::string *name = &i->first;
		const ToolGroupCap *cap = &i->second;
		os<<serializeString(*name);
		writeS16(os, cap->uses);
		writeS16(os, cap->maxlevel);
		writeU32(os, cap->times.size());
		for(std::map<int, float>::const_iterator
				i = cap->times.begin(); i != cap->times.end(); i++){
			writeS16(os, i->first);
			writeF1000(os, i->second);
		}
	}
	if(protocol_version > 17){
		writeU32(os, damageGroups.size());
		for(std::map<std::string, s16>::const_iterator
				i = damageGroups.begin(); i != damageGroups.end(); i++){
			os<<serializeString(i->first);
			writeS16(os, i->second);
		}
	}
}

void ItemDefinition::serialize(std::ostream &os) const
{
	writeU8(os, 1); // version
	writeU8(os, type);
	os<<serializeString(name);
	os<<serializeString(description);
	os<<serializeString(inventory_image);
	os<<serializeString(wield_image);
	writeV3F1000(os, wield_scale);
	writeS16(os, stack_max);
	writeU8(os, usable);
	writeU8(os, liquids_pointable);
	writeU8(os, eatable);
	std::string tool_capabilities_s = "";
	if(tool_capabilities){
		std::ostringstream tmp_os(std::ios::binary);
		tool_capabilities->serialize(tmp_os);
		tool_capabilities_s = tmp_os.str();
	}
	os<<serializeString(tool_capabilities_s);
	writeU16(os, groups.size());
	for(std::map<std::string, int>::const_iterator
			i = groups.begin(); i != groups.end(); i++){
		os<<serializeString(i->first);
		writeS16(os, i->second);
	}
}

void ItemDefinition::serialize(std::ostream &os, u16 protocol_version) const
{
    if(protocol_version <= 17)
        writeU8(os, 1); // version
    else
        writeU8(os, 2); // version
    writeU8(os, type);
    os<<serializeString(name);
    os<<serializeString(description);
    os<<serializeString(inventory_image);
    os<<serializeString(wield_image);
    writeV3F1000(os, wield_scale);
    writeS16(os, stack_max);
    writeU8(os, usable);
    writeU8(os, liquids_pointable);
    std::string tool_capabilities_s = "";
    if(tool_capabilities) {
        std::ostringstream tmp_os(std::ios::binary);
        tool_capabilities->serialize(tmp_os, protocol_version);
        tool_capabilities_s = tmp_os.str();
    }
    os<<serializeString(tool_capabilities_s);
    writeU16(os, groups.size());
    for(std::map<std::string, int>::const_iterator
            i = groups.begin(); i != groups.end(); i++) {
        os<<serializeString(i->first);
        writeS16(os, i->second);
    }
    os<<serializeString(node_placement_prediction);
    if(protocol_version > 17) {
        //serializeSimpleSoundSpec(sound_place, os);
        os<<serializeString(sound_place.name);
        writeF1000(os, sound_place.gain);
    }
}

std::string gob_cmd_punched(s16 damage, s16 result_hp)
{
	std::ostringstream os(std::ios::binary);
	// command
	writeU8(os, GENERIC_CMD_PUNCHED);
	// damage
	writeS16(os, damage);
	// result_hp
	writeS16(os, result_hp);
	return os.str();
}

void ObjectProperties::serialize(std::ostream &os) const
{
	writeU8(os, 1); // version
	writeS16(os, hp_max);
	writeU8(os, physical);
	writeF1000(os, weight);
	writeV3F1000(os, collisionbox.MinEdge);
	writeV3F1000(os, collisionbox.MaxEdge);
	os<<serializeString(visual);
	os<<serializeString(meshfile);
	writeV2F1000(os, visual_size);
	writeU16(os, textures.size());
	for(u32 i=0; i<textures.size(); i++){
		os<<serializeString(textures[i]);
	}
	writeU16(os, textures_3d.size());
	for(u32 i=0; i<textures_3d.size(); i++){
		os<<serializeString(textures_3d[i]);
	}
	writeV2S16(os, spritediv);
	writeV2S16(os, initial_sprite_basepos);
	writeU8(os, is_visible);
	writeU8(os, makes_footstep_sound);
	writeF1000(os, automatic_rotate);
}

std::string LuaEntitySAO::getStaticData()
{
/*
	verbosestream<<FUNCTION_NAME<<std::endl;
*/
	std::ostringstream os(std::ios::binary);
	// version
	writeU8(os, 1);
	// name
	os<<serializeString(m_init_name);
	// state
	if(m_registered){
		std::string state = m_env->getScriptIface()->
			luaentity_GetStaticdata(m_id);
		os<<serializeLongString(state);
	} else {
		os<<serializeLongString(m_init_state);
	}
	// hp
	writeS16(os, m_hp);
	// velocity
	writeV3F1000(os, m_velocity);
	// yaw
	writeF1000(os, m_yaw);
	return os.str();
}

void Client::sendSignNodeText(v3s16 p, std::string text)
{
	/*
		u16 command
		v3s16 p
		u16 textlen
		textdata
	*/
	std::ostringstream os(std::ios_base::binary);
	u8 buf[12];

	// Write command
	writeU16(buf, TOSERVER_SIGNNODETEXT);
	os.write((char*)buf, 2);

	// Write p
	writeV3S16(buf, p);
	os.write((char*)buf, 6);

	u16 textlen = text.size();
	// Write text length
	writeS16(buf, textlen);
	os.write((char*)buf, 2);

	// Write text
	os.write((char*)text.c_str(), textlen);

	// Make data buffer
	std::string s = os.str();
	SharedBuffer<u8> data((u8*)s.c_str(), s.size());
	// Send as reliable
	Send(0, data, true);
}

void ObjectProperties::serialize(std::ostream &os) const
{
	writeU8(os, 1); // version
	writeS16(os, hp_max);
	writeU8(os, physical);
	writeF1000(os, weight);
	writeV3F1000(os, collisionbox.MinEdge);
	writeV3F1000(os, collisionbox.MaxEdge);
	os<<serializeString(visual);
	writeV2F1000(os, visual_size);
	writeU16(os, textures.size());
	for(u32 i=0; i<textures.size(); i++){
		os<<serializeString(textures[i]);
	}
	writeV2S16(os, spritediv);
	writeV2S16(os, initial_sprite_basepos);
	writeU8(os, is_visible);
	writeU8(os, makes_footstep_sound);
	writeF1000(os, automatic_rotate);
	// Added in protocol version 14
	os<<serializeString(mesh);
	writeU16(os, colors.size());
	for(u32 i=0; i<colors.size(); i++){
		writeARGB8(os, colors[i]);
	}
	writeU8(os, collideWithObjects);
	writeF1000(os,stepheight);
	writeU8(os, automatic_face_movement_dir);
	writeF1000(os, automatic_face_movement_dir_offset);
	// Add stuff only at the bottom.
	// Never remove anything, because we don't want new versions of this
}

void ContentFeatures::serialize(std::ostream &os, u16 protocol_version)
{
	if(protocol_version < 14){
		serializeOld(os, protocol_version);
		return;
	}

	writeU8(os, 6); // version
	os<<serializeString(name);
	writeU16(os, groups.size());
	for(ItemGroupList::const_iterator
			i = groups.begin(); i != groups.end(); i++){
		os<<serializeString(i->first);
		writeS16(os, i->second);
	}
	writeU8(os, drawtype);
	writeF1000(os, visual_scale);
	writeU8(os, 6);
	for(u32 i=0; i<6; i++)
		tiledef[i].serialize(os, protocol_version);
	writeU8(os, CF_SPECIAL_COUNT);
	for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
		tiledef_special[i].serialize(os, protocol_version);
	}
	writeU8(os, alpha);
	writeU8(os, post_effect_color.getAlpha());
	writeU8(os, post_effect_color.getRed());
	writeU8(os, post_effect_color.getGreen());
	writeU8(os, post_effect_color.getBlue());
	writeU8(os, param_type);
	writeU8(os, param_type_2);
	writeU8(os, is_ground_content);
	writeU8(os, light_propagates);
	writeU8(os, sunlight_propagates);
	writeU8(os, walkable);
	writeU8(os, pointable);
	writeU8(os, diggable);
	writeU8(os, climbable);
	writeU8(os, buildable_to);
	os<<serializeString(""); // legacy: used to be metadata_name
	writeU8(os, liquid_type);
	os<<serializeString(liquid_alternative_flowing);
	os<<serializeString(liquid_alternative_source);
	writeU8(os, liquid_viscosity);
	writeU8(os, liquid_renewable);
	writeU8(os, light_source);
	writeU32(os, damage_per_second);
	node_box.serialize(os);
	selection_box.serialize(os);
	writeU8(os, legacy_facedir_simple);
	writeU8(os, legacy_wallmounted);
	serializeSimpleSoundSpec(sound_footstep, os);
	serializeSimpleSoundSpec(sound_dig, os);
	serializeSimpleSoundSpec(sound_dug, os);
	writeU8(os, rightclickable);
	// Stuff below should be moved to correct place in a version that otherwise changes
	// the protocol version
	writeU8(os, drowning);
}

std::string PlayerSAO::getClientInitializationData(u16 protocol_version)
{
	std::ostringstream os(std::ios::binary);

	if(protocol_version >= 15)
	{
		writeU8(os, 1); // version
		os<<serializeString(m_player->getName()); // name
		writeU8(os, 1); // is_player
		writeS16(os, getId()); //id
		writeV3F1000(os, m_player->getPosition() + v3f(0,BS*1,0));
		writeF1000(os, m_player->getYaw());
		writeS16(os, getHP());

		writeU8(os, 6 + m_bone_position.size()); // number of messages stuffed in here
		os<<serializeLongString(getPropertyPacket()); // message 1
		os<<serializeLongString(gob_cmd_update_armor_groups(m_armor_groups)); // 2
		os<<serializeLongString(gob_cmd_update_animation(
			m_animation_range, m_animation_speed, m_animation_blend, m_animation_loop)); // 3
		for(std::map<std::string, core::vector2d<v3f> >::const_iterator ii = m_bone_position.begin(); ii != m_bone_position.end(); ++ii){
			os<<serializeLongString(gob_cmd_update_bone_position((*ii).first, (*ii).second.X, (*ii).second.Y)); // m_bone_position.size
		}
		os<<serializeLongString(gob_cmd_update_attachment(m_attachment_parent_id, m_attachment_bone, m_attachment_position, m_attachment_rotation)); // 4
		os<<serializeLongString(gob_cmd_update_physics_override(m_physics_override_speed,
				m_physics_override_jump, m_physics_override_gravity, m_physics_override_sneak,
				m_physics_override_sneak_glitch)); // 5
		os << serializeLongString(gob_cmd_update_nametag_attributes(m_nametag_color)); // 6
	}
	else
	{
		writeU8(os, 0); // version
		os<<serializeString(m_player->getName()); // name
		writeU8(os, 1); // is_player
		writeV3F1000(os, m_player->getPosition() + v3f(0,BS*1,0));
		writeF1000(os, m_player->getYaw());
		writeS16(os, getHP());
		writeU8(os, 2); // number of messages stuffed in here
		os<<serializeLongString(getPropertyPacket()); // message 1
		os<<serializeLongString(gob_cmd_update_armor_groups(m_armor_groups)); // 2
	}

	// return result
	return os.str();
}

void ContentFeatures::serializeOld(std::ostream &os, u16 protocol_version)
{
	if(protocol_version == 13)
	{
		writeU8(os, 5); // version
		os<<serializeString(name);
		writeU16(os, groups.size());
		for(ItemGroupList::const_iterator
				i = groups.begin(); i != groups.end(); i++){
			os<<serializeString(i->first);
			writeS16(os, i->second);
		}
		writeU8(os, drawtype);
		writeF1000(os, visual_scale);
		writeU8(os, 6);
		for(u32 i=0; i<6; i++)
			tiledef[i].serialize(os, protocol_version);
		writeU8(os, CF_SPECIAL_COUNT);
		for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
			tiledef_special[i].serialize(os, protocol_version);
		}
		writeU8(os, alpha);
		writeU8(os, post_effect_color.getAlpha());
		writeU8(os, post_effect_color.getRed());
		writeU8(os, post_effect_color.getGreen());
		writeU8(os, post_effect_color.getBlue());
		writeU8(os, param_type);
		writeU8(os, param_type_2);
		writeU8(os, is_ground_content);
		writeU8(os, light_propagates);
		writeU8(os, sunlight_propagates);
		writeU8(os, walkable);
		writeU8(os, pointable);
		writeU8(os, diggable);
		writeU8(os, climbable);
		writeU8(os, buildable_to);
		os<<serializeString(""); // legacy: used to be metadata_name
		writeU8(os, liquid_type);
		os<<serializeString(liquid_alternative_flowing);
		os<<serializeString(liquid_alternative_source);
		writeU8(os, liquid_viscosity);
		writeU8(os, light_source);
		writeU32(os, damage_per_second);
		node_box.serialize(os, protocol_version);
		selection_box.serialize(os, protocol_version);
		writeU8(os, legacy_facedir_simple);
		writeU8(os, legacy_wallmounted);
		serializeSimpleSoundSpec(sound_footstep, os);
		serializeSimpleSoundSpec(sound_dig, os);
		serializeSimpleSoundSpec(sound_dug, os);
	}
	else
	{
		throw SerializationError("ContentFeatures::serialize(): Unsupported version requested");
	}
}

std::string gob_cmd_update_armor_groups(const ItemGroupList &armor_groups)
{
	std::ostringstream os(std::ios::binary);
	writeU8(os, GENERIC_CMD_UPDATE_ARMOR_GROUPS);
	writeU16(os, armor_groups.size());
	for (const auto &armor_group : armor_groups) {
		os<<serializeString(armor_group.first);
		writeS16(os, armor_group.second);
	}
	return os.str();
}

std::string gob_cmd_update_attachment(int parent_id, std::string bone, v3f position, v3f rotation)
{
	std::ostringstream os(std::ios::binary);
	// command 
	writeU8(os, GENERIC_CMD_SET_ATTACHMENT);
	// parameters
	writeS16(os, parent_id);
	os<<serializeString(bone);
	writeV3F1000(os, position);
	writeV3F1000(os, rotation);
	return os.str();
}

void ToolCapabilities::serialize(std::ostream &os) const
{
	writeU8(os, 0); // version
	writeF1000(os, full_punch_interval);
	writeS16(os, max_drop_level);
	writeU32(os, groupcaps.size());
	for(std::map<std::string, ToolGroupCap>::const_iterator
			i = groupcaps.begin(); i != groupcaps.end(); i++){
		const std::string *name = &i->first;
		const ToolGroupCap *cap = &i->second;
		os<<serializeString(*name);
		writeF1000(os, cap->maxwear);
		writeF1000(os, cap->maxlevel);
		writeU32(os, cap->times.size());
		for(std::map<int, float>::const_iterator
				i = cap->times.begin(); i != cap->times.end(); i++){
			writeS16(os, i->first);
			writeF1000(os, i->second);
		}
	}
}

std::string gob_cmd_update_armor_groups(const ItemGroupList &armor_groups)
{
	std::ostringstream os(std::ios::binary);
	writeU8(os, GENERIC_CMD_UPDATE_ARMOR_GROUPS);
	writeU16(os, armor_groups.size());
	for(ItemGroupList::const_iterator i = armor_groups.begin();
			i != armor_groups.end(); i++){
		os<<serializeString(i->first);
		writeS16(os, i->second);
	}
	return os.str();
}