src/unittest/test_map_settings_manager.cpp

/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#ifndef SERVEROBJECT_HEADER
#define SERVEROBJECT_HEADER

#include "irrlichttypes_bloated.h"
#include "activeobject.h"
#include "inventorymanager.h"
#include "itemgroup.h"
#include "util/container.h"

/*

Some planning
-------------

* Server environment adds an active object, which gets the id 1
* The active object list is scanned for each client once in a while,
  and it finds out what objects have been added that are not known
  by the client yet. This scan is initiated by the Server class and
  the result ends up directly to the server.
* A network packet is created with the info and sent to the client.
* Environment converts objects to static data and static data to
  objects, based on how close players are to them.

*/

class ServerEnvironment;
struct ItemStack;
class Player;
struct ToolCapabilities;
struct ObjectProperties;

class ServerActiveObject : public ActiveObject
{
public:
	/*
		NOTE: m_env can be NULL, but step() isn't called if it is.
		Prototypes are used that way.
	*/
	ServerActiveObject(ServerEnvironment *env, v3f pos);
	virtual ~ServerActiveObject();

	virtual ActiveObjectType getSendType() const
	{ return getType(); }

	// Called after id has been set and has been inserted in environment
	virtual void addedToEnvironment(u32 dtime_s){};
	// Called before removing from environment
	virtual void removingFromEnvironment(){};
	// Returns true if object's deletion is the job of the
	// environment
	virtual bool environmentDeletes() const
	{ return true; }
	
	// Create a certain type of ServerActiveObject
	static ServerActiveObject* create(ActiveObjectType type,
			ServerEnvironment *env, u16 id, v3f pos,
			const std::string &data);
	
	/*
		Some simple getters/setters
	*/
	v3f getBasePosition(){ return m_base_position; }
	void setBasePosition(v3f pos){ m_base_position = pos; }
	ServerEnvironment* getEnv(){ return m_env; }
	
	/*
		Some more dynamic interface
	*/
	
	virtual void setPos(v3f pos)
		{ setBasePosition(pos); }
	// continuous: if true, object does not stop immediately at pos
	virtual void moveTo(v3f pos, bool continuous)
		{ setBasePosition(pos); }
	// If object has moved less than this and data has not changed,
	// saving to disk may be omitted
	virtual float getMinimumSavedMovement();

	virtual std::string getDescription(){return "SAO";}
	
	/*
		Step object in time.
		Messages added to messages are sent to client over network.

		send_recommended:
			True at around 5-10 times a second, same for all objects.
			This is used to let objects send most of the data at the
			same time so that the data can be combined in a single
			packet.
	*/
	virtual void step(float dtime, bool send_recommended){}
	
	/*
		The return value of this is passed to the client-side object
		when it is created
	*/
	virtual std::string getClientInitializationData(u16 protocol_version){return "";}
	
	/*
		The return value of this is passed to the server-side object
		when it is created (converted from static to active - actually
		the data is the static form)
	*/
	virtual std::string getStaticData()
	{
		assert(isStaticAllowed());
		return "";
	}
	/*
		Return false in here to never save and instead remove object
		on unload. getStaticData() will not be called in that case.
	*/
	virtual bool isStaticAllowed() const
	{return true;}
	
	// Returns tool wear
	virtual int punch(v3f dir,
			const ToolCapabilities *toolcap=NULL,
			ServerActiveObject *puncher=NULL,
			float time_from_last_punch=1000000)
	{ return 0; }
	virtual void rightClick(ServerActiveObject *clicker)
	{}
	virtual void setHP(s16 hp)
	{}
	virtual s16 getHP() const
	{ return 0; }

	virtual void setArmorGroups(const ItemGroupList &armor_groups)
	{}
	virtual ItemGroupList getArmorGroups()
	{ return ItemGroupList(); }
	virtual void setPhysicsOverride(float physics_override_speed, float physics_override_jump, float physics_override_gravity)
	{}
	virtual void setAnimation(v2f frames, float frame_speed, float frame_blend, bool frame_loop)
	{}
	virtual void getAnimation(v2f *frames, float *frame_speed, float *frame_blend, bool *frame_loop)
	{}
	virtual void setBonePosition(const std::string &bone, v3f position, v3f rotation)
	{}
	virtual void getBonePosition(const std::string &bone, v3f *position, v3f *lotation)
	{}
	virtual void setAttachment(int parent_id, const std::string &bone, v3f position, v3f rotation)
	{}
	virtual void getAttachment(int *parent_id, std::string *bone, v3f *position, v3f *rotation)
	{}
	virtual void addAttachmentChild(int child_id)
	{}
	virtual void removeAttachmentChild(int child_id)
	{}
	virtual std::set<int> getAttachmentChildIds()
	{ return std::set<int>(); }
	virtual ObjectProperties* accessObjectProperties()
	{ return NULL; }
	virtual void notifyObjectPropertiesModified()
	{}

	// Inventory and wielded item
	virtual Inventory* getInventory()
	{ return NULL; }
	virtual const Inventory* getInventory() const
	{ return NULL; }
	virtual InventoryLocation getInventoryLocation() const
	{ return InventoryLocation(); }
	virtual void setInventoryModified()
	{}
	virtual std::string getWieldList() const
	{ return ""; }
	virtual int getWieldIndex() const
	{ return 0; }
	virtual ItemStack getWieldedItem() const;
	virtual bool setWieldedItem(const ItemStack &item);

	/*
		Number of players which know about this object. Object won't be
		deleted until this is 0 to keep the id preserved for the right
		object.
	*/
	u16 m_known_by_count;

	/*
		- Whether this object is to be removed when nobody knows about
		  it anymore.
		- Removal is delayed to preserve the id for the time during which
		  it could be confused to some other object by some client.
		- This is set to true by the step() method when the object wants
		  to be deleted.
		- This can be set to true by anything else too.
	*/
	bool m_removed;
	
	/*
		This is set to true when an object should be removed from the active
		object list but couldn't be removed because the id has to be
		reserved for some client.

		The environment checks this periodically. If this is true and also
		m_known_by_count is true, object is deleted from the active object
		list.
	*/
	bool m_pending_deactivation;
	
	/*
		Whether the object's static data has been stored to a block
	*/
	bool m_static_exists;
	/*
		The block from which the object was loaded from, and in which
		a copy of the static data resides.
	*/
	v3s16 m_static_block;
	
	/*
		Queue of messages to be sent to the client
	*/
	std::queue<ActiveObjectMessage> m_messages_out;
	
protected:
	// Used for creating objects based on type
	typedef ServerActiveObject* (*Factory)
			(ServerEnvironment *env, v3f pos,
			const std::string &data);
	static void registerType(u16 type, Factory f);

	ServerEnvironment *m_env;
	v3f m_base_position;

private:
	// Used for creating objects based on type
	static std::map<u16, Factory> m_types;
};

#endif
	Commit message (Collapse)	Author	Age
*	Rework Settings to support arbitrary hierarchies (#11352)	sfan5	2021-06-23
\|
*	Settings: Proper priority hierarchy	SmallJoker	2021-01-29
\| \| \| \| \| \| \| \| \| \| \|	Remove old defaults system Introduce priority-based fallback list Use new functions for map_meta special functions Change groups to use end tags Unittest changes: * Adapt unittest to the new code * Compare Settings objects
*	Remove unused functions reported by cppcheck (#10463)	SmallJoker	2020-10-05
\| \| \| \| \| \| \|	Run unused functions reported by cppcheck This change removes a few (but not all) unused functions. Some unused helper functions were not removed due to their complexity and potential of future use.
*	Move files to subdirectories (#6599)	Vitaliy	2017-11-08
\| \| \| \|	* Move files around
*	couple of memory leaks fixes.	David Carlier	2016-08-10
\|
*	Mapgen: Remove unused 'flat' and 'trees' flags from mg_flags	paramat	2016-08-04
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	When the 'flat' and 'trees' flags were moved into mgv6_spflags they were left in mg_flags in an attempt to support old mgv6 worlds. However their appearence in mg_flags causes confusion, also, later, old-world support was found to be broken for mgv6 worlds with 'notrees'. This commit cleans up the mess and comes a month after a thread warning of the change, and explaining the required action, was posted in the news subforum. Only old mgv6 worlds with 'flat' or 'notrees' are affected, a small minority of worlds, the required action being correctly setting these flags in mgv6_spflags. Disable a section of the 'map settings manager' unit test which is to be changed as it is causing problems for pull requests.
*	test_map_settings_manager: Fix Wunused-result warning	est31	2016-08-04
\|
*	Add MapSettingsManager and new mapgen setting script API functions	kwolekr	2016-07-03
	This commit refactors the majority of the Mapgen settings system. - MapgenParams is now owned by MapSettingsManager, itself a part of ServerMap, instead of the EmergeManager. - New Script API functions added: core.get_mapgen_setting core.get_mapgen_setting_noiseparams, core.set_mapgen_setting, and core.set_mapgen_setting_noiseparams. - minetest.get/set_mapgen_params are deprecated by the above new functions. - It is now possible to view and modify any arbitrary mapgen setting from a mod, rather than the base MapgenParams structure. - MapgenSpecificParams has been removed.