quadrilateralcowboy/sys/posix/posix_input.cpp

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2020-06-12 21:06:25 +00:00
/*
===========================================================================
Doom 3 GPL Source Code
Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
This file is part of the Doom 3 GPL Source Code (?Doom 3 Source Code?).
Doom 3 Source Code 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 3 of the License, or
(at your option) any later version.
Doom 3 Source Code 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 Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
===========================================================================
*/
#include "../../idlib/precompiled.h"
#include "posix_public.h"
typedef struct poll_keyboard_event_s
{
int key;
bool state;
} poll_keyboard_event_t;
typedef struct poll_mouse_event_s
{
int action;
int value;
} poll_mouse_event_t;
#define MAX_POLL_EVENTS 50
#define POLL_EVENTS_HEADROOM 2 // some situations require to add several events
static poll_keyboard_event_t poll_events_keyboard[MAX_POLL_EVENTS + POLL_EVENTS_HEADROOM];
static int poll_keyboard_event_count;
static poll_mouse_event_t poll_events_mouse[MAX_POLL_EVENTS + POLL_EVENTS_HEADROOM];
static int poll_mouse_event_count;
/*
==========
Posix_AddKeyboardPollEvent
==========
*/
bool Posix_AddKeyboardPollEvent(int key, bool state) {
if (poll_keyboard_event_count >= MAX_POLL_EVENTS + POLL_EVENTS_HEADROOM)
common->FatalError( "poll_keyboard_event_count exceeded MAX_POLL_EVENT + POLL_EVENTS_HEADROOM\n");
poll_events_keyboard[poll_keyboard_event_count].key = key;
poll_events_keyboard[poll_keyboard_event_count++].state = state;
if (poll_keyboard_event_count >= MAX_POLL_EVENTS) {
common->DPrintf("WARNING: reached MAX_POLL_EVENT poll_keyboard_event_count\n");
return false;
}
return true;
}
/*
==========
Posix_AddMousePollEvent
==========
*/
bool Posix_AddMousePollEvent(int action, int value) {
if (poll_mouse_event_count >= MAX_POLL_EVENTS + POLL_EVENTS_HEADROOM)
common->FatalError( "poll_mouse_event_count exceeded MAX_POLL_EVENT + POLL_EVENTS_HEADROOM\n");
poll_events_mouse[poll_mouse_event_count].action = action;
poll_events_mouse[poll_mouse_event_count++].value = value;
if (poll_mouse_event_count >= MAX_POLL_EVENTS) {
common->DPrintf("WARNING: reached MAX_POLL_EVENT poll_mouse_event_count\n");
return false;
}
return true;
}
/*
===========================================================================
polled from GetDirectUsercmd
async input polling is obsolete
we have a single entry point for both mouse and keyboard
the mouse/keyboard seperation is API legacy
===========================================================================
*/
#ifndef USE_SDL
int Sys_PollKeyboardInputEvents( void ) {
return poll_keyboard_event_count;
}
int Sys_ReturnKeyboardInputEvent( const int n, int &key, bool &state ) {
if ( n >= poll_keyboard_event_count ) {
return 0;
}
key = poll_events_keyboard[n].key;
state = poll_events_keyboard[n].state;
return 1;
}
void Sys_EndKeyboardInputEvents( void ) {
//isn't this were it's supposed to be, was missing some key strokes with it set below
poll_keyboard_event_count = 0;
}
int Sys_PollMouseInputEvents( void ) {
#if 0 //moved to the Sys_End functions
poll_keyboard_event_count = 0;
poll_mouse_event_count = 0;
#endif
// that's OS specific, implemented in osx/ and linux/
Posix_PollInput( );
return poll_mouse_event_count;
}
int Sys_ReturnMouseInputEvent( const int n, int &action, int &value )
{
if ( n>=poll_mouse_event_count ) {
return 0;
}
action = poll_events_mouse[ n ].action;
value = poll_events_mouse[ n ].value;
return 1;
}
void Sys_EndMouseInputEvents( void ) {
// moved out of the Sys_PollMouseInputEvents
poll_mouse_event_count = 0;
}
#endif