ref: ec03448333ca4c1d996dcb2b9c9ac01522a271bd
dir: /src/d_event.c/
// Emacs style mode select -*- C++ -*- //----------------------------------------------------------------------------- // // Copyright(C) 1993-1996 Id Software, Inc. // Copyright(C) 2005 Simon Howard // // This program is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License // as published by the Free Software Foundation; either version 2 // 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 General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA // 02111-1307, USA. // //----------------------------------------------------------------------------- // // DESCRIPTION: Event handling. // // Events are asynchronous inputs generally generated by the game user. // Events can be discarded if no responder claims them // //----------------------------------------------------------------------------- #include <stdlib.h> #include "d_event.h" #define MAXEVENTS 64 static event_t events[MAXEVENTS]; static int eventhead; static int eventtail; // // D_PostEvent // Called by the I/O functions when input is detected // void D_PostEvent (event_t* ev) { events[eventhead] = *ev; eventhead = (eventhead + 1) % MAXEVENTS; } // Read an event from the queue. event_t *D_PopEvent(void) { event_t *result; // No more events waiting. if (eventtail == eventhead) { return NULL; } result = &events[eventtail]; // Advance to the next event in the queue. eventtail = (eventtail + 1) % MAXEVENTS; return result; }