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/*
* events.c
*
* Event queue.
*/
#include "rockmacros.h"
#include "input.h"
char keystates[MAX_KEYS];
int nkeysdown;
#define MAX_EVENTS 32
static event_t eventqueue[MAX_EVENTS];
static int eventhead, eventpos;
int ev_postevent(event_t *ev)
{
int nextevent;
nextevent = (eventhead+1)%MAX_EVENTS;
if (nextevent == eventpos)
return 0;
eventqueue[eventhead] = *ev;
eventhead = nextevent;
return 1;
}
int ev_getevent(event_t *ev)
{
if (eventpos == eventhead)
{
ev->type = EV_NONE;
return 0;
}
*ev = eventqueue[eventpos];
eventpos = (eventpos+1)%MAX_EVENTS;
if (ev->type == EV_PRESS)
{
keystates[ev->code] = 1;
nkeysdown++;
}
if (ev->type == EV_RELEASE)
{
keystates[ev->code] = 0;
nkeysdown--;
if (nkeysdown < 0) nkeysdown = 0;
}
return 1;
}
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