event.h

00001 /*
00002 Copyright Remco Bras 2007
00003 This file is part of RPGE.
00004 
00005 RPGE is free software; you can redistribute it and/or modify
00006 it under the terms of the GNU General Public License as published by
00007 the Free Software Foundation; either version 3 of the License, or
00008 (at your option) any later version.
00009 
00010 RPGE is distributed in the hope that it will be useful,
00011 but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013 GNU General Public License for more details.
00014 
00015 You should have received a copy of the GNU General Public License
00016 along with this program.  If not, see <http://www.gnu.org/licenses/>
00017 */
00018 
00019 #ifndef EVENT_H
00020 #define EVENT_H
00021 #include <SDL/SDL.h>
00022 #include <stdlib.h>
00023 #include <string.h>
00024 #include <libguile.h>
00025 #include "sequence.h"
00026 
00027 
00028 typedef struct
00029 {
00030   SCM type;
00031   SCM data;
00032 }event;
00033 
00034 typedef struct
00035 {
00036   unsigned int index;
00037   char block;
00038 } user;
00039 
00040 typedef struct
00041 {
00042   sequence events;
00043   sequence indices;
00044   /*We give all eventstacks their own mutex locks, to prevent having object-specific stacks lock each other out for no reason.*/
00045   SDL_mutex* lock;
00046   /*Basically, threads block on this if they want to wait for events to pop up*/
00047   SDL_cond* block;
00048 } eventstack;
00049 
00050 extern eventstack global_usereventstack;
00051 
00052 eventstack eventstack_init();
00053 void eventstack_clear(eventstack* stackptr);
00054 void eventstack_addevent(eventstack* stackptr, event event);
00055 event eventstack_getfirstevent(eventstack* stackptr);
00056 event make_event(SCM type, SCM data);
00057 unsigned long int eventstack_open(eventstack* es,char block);
00058 void eventstack_close(eventstack* es,unsigned long int luser);
00059 event evenstack_get_next_event(eventstack es, unsigned long int luser);
00060 int eventstack_get_index_of_user(eventstack es, unsigned long int luser);
00061 event eventstack_get_first_of_user(eventstack* es, unsigned long int luser);
00062 #endif