70 lines
1.3 KiB
C
70 lines
1.3 KiB
C
#include "dglevent.h"
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#include "dglerror.h"
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#include "dglutil.h"
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#include <string.h>
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volatile boolean _events_enabled;
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volatile INPUTEVENT _events_buffer[EVENTS_BUFFER_SIZE];
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volatile int _events_buffer_start = 0;
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volatile int _events_buffer_end = 0;
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boolean events_init(void) {
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if (_events_enabled) {
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dgl_set_error(DGL_EVENTS_ALREADY_INITIALIZED);
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return FALSE;
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}
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events_clear();
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_events_enabled = TRUE;
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return TRUE;
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}
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boolean events_shutdown(void) {
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if (!_events_enabled)
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return TRUE; // don't care
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_events_enabled = FALSE;
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events_clear();
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return TRUE;
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}
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boolean events_poll(INPUTEVENT **event) {
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if (events_is_empty())
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return FALSE;
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int_disable();
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*event = &_events_buffer[_events_buffer_start];
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++_events_buffer_start;
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if (_events_buffer_start >= EVENTS_BUFFER_SIZE)
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_events_buffer_start = 0;
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int_enable();
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return TRUE;
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}
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boolean events_peek(INPUTEVENT **event) {
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if (events_is_empty())
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return FALSE;
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*event = &_events_buffer[_events_buffer_start];
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return TRUE;
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}
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void events_clear(void) {
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int_disable();
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memset(_events_buffer, 0, sizeof(_events_buffer));
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_events_buffer_start = 0;
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_events_buffer_end = 0;
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int_enable();
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}
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