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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 EVENT_HEADER
- #define EVENT_HEADER
- class MtEvent
- {
- public:
- virtual ~MtEvent(){};
- //virtual MtEvent* clone(){ return new IEvent; }
- virtual const char* getType() const = 0;
- MtEvent* checkIs(const std::string &type)
- {
- if(type == getType())
- return this;
- return NULL;
- }
- };
- // An event with no parameters and customizable name
- class SimpleTriggerEvent: public MtEvent
- {
- const char *type;
- public:
- SimpleTriggerEvent(const char *type):
- type(type)
- {}
- const char* getType() const
- {return type;}
- };
- class MtEventReceiver
- {
- public:
- virtual ~MtEventReceiver(){};
- virtual void onEvent(MtEvent *e) = 0;
- };
- typedef void (*event_receive_func)(MtEvent *e, void *data);
- class MtEventManager
- {
- public:
- virtual ~MtEventManager(){};
- virtual void put(MtEvent *e) = 0;
- virtual void reg(const char *type, event_receive_func f, void *data) = 0;
- // If data==NULL, every occurence of f is deregistered.
- virtual void dereg(const char *type, event_receive_func f, void *data) = 0;
- virtual void reg(MtEventReceiver *r, const char *type) = 0;
- virtual void dereg(MtEventReceiver *r, const char *type) = 0;
- };
- #endif
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