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- /*
- Minetest
- Copyright (C) 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 ROLLBACK_INTERFACE_HEADER
- #define ROLLBACK_INTERFACE_HEADER
- #include "irr_v3d.h"
- #include <string>
- #include <iostream>
- #include "exceptions.h"
- class Map;
- class IGameDef;
- struct MapNode;
- class InventoryManager;
- struct RollbackNode
- {
- std::string name;
- int param1;
- int param2;
- std::string meta;
- bool operator==(const RollbackNode &other)
- {
- return (name == other.name && param1 == other.param1 &&
- param2 == other.param2 && meta == other.meta);
- }
- bool operator!=(const RollbackNode &other)
- {
- return !(*this == other);
- }
- RollbackNode():
- param1(0),
- param2(0)
- {}
- RollbackNode(Map *map, v3s16 p, IGameDef *gamedef);
- };
- struct RollbackAction
- {
- enum Type{
- TYPE_NOTHING,
- TYPE_SET_NODE,
- TYPE_MODIFY_INVENTORY_STACK,
- } type;
- time_t unix_time;
- std::string actor;
- bool actor_is_guess;
- v3s16 p;
- RollbackNode n_old;
- RollbackNode n_new;
-
- std::string inventory_location;
- std::string inventory_list;
- u32 inventory_index;
- bool inventory_add;
- std::string inventory_stack;
- RollbackAction():
- type(TYPE_NOTHING),
- unix_time(0),
- actor_is_guess(false)
- {}
- void setSetNode(v3s16 p_, const RollbackNode &n_old_,
- const RollbackNode &n_new_)
- {
- type = TYPE_SET_NODE;
- p = p_;
- n_old = n_old_;
- n_new = n_new_;
- }
- void setModifyInventoryStack(const std::string &inventory_location_,
- const std::string &inventory_list_, int index_,
- bool add_, const std::string &inventory_stack_)
- {
- type = TYPE_MODIFY_INVENTORY_STACK;
- inventory_location = inventory_location_;
- inventory_list = inventory_list_;
- inventory_index = index_;
- inventory_add = add_;
- inventory_stack = inventory_stack_;
- }
-
- // String should not contain newlines or nulls
- std::string toString() const;
- void fromStream(std::istream &is) throw(SerializationError);
-
- // Eg. flowing water level changes are not important
- bool isImportant(IGameDef *gamedef) const;
-
- bool getPosition(v3s16 *dst) const;
- bool applyRevert(Map *map, InventoryManager *imgr, IGameDef *gamedef) const;
- };
- class IRollbackReportSink
- {
- public:
- virtual ~IRollbackReportSink(){}
- virtual void reportAction(const RollbackAction &action) = 0;
- virtual std::string getActor() = 0;
- virtual bool isActorGuess() = 0;
- virtual void setActor(const std::string &actor, bool is_guess) = 0;
- virtual std::string getSuspect(v3s16 p, float nearness_shortcut,
- float min_nearness) = 0;
- };
- class RollbackScopeActor
- {
- public:
- RollbackScopeActor(IRollbackReportSink *sink, const std::string &actor,
- bool is_guess=false):
- m_sink(sink)
- {
- if(m_sink){
- m_actor_was = m_sink->getActor();
- m_actor_was_guess = m_sink->isActorGuess();
- m_sink->setActor(actor, is_guess);
- }
- }
- ~RollbackScopeActor()
- {
- if(m_sink){
- m_sink->setActor(m_actor_was, m_actor_was_guess);
- }
- }
- private:
- IRollbackReportSink *m_sink;
- std::string m_actor_was;
- bool m_actor_was_guess;
- };
- #endif
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