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