Gered
62af8575c6
- rename standard integer types to a more familiar (u)int(8/16/32) - many function/struct renames. i don't _really_ know if what i've done for this is better, but it "feels" better to me. many draw/blit function names are shorter which is nice, at least. kinda important to me because i develop this on a real DOS machine in 80x50 text mode. - add 'extern "C"' blocks to headers for C++ compiler usage - draw/pixel color value arguments for functions should all have been changed to be uint8 instead of a full 32-bit int. feels right, but maybe should've left alone... - small fix to keyboard handler. noticed a problem on one thinkpad laptop. was a result of what i think was a typo in a constant value used during the part of the interrupt handler that tells the keyboard controller the key event was processed - fix uncommon potential crash function return in draw_filled_rect - renamed low-level "direct" assembly functions to "lowlevel_xxx" to be a little bit more explicit about what they are - add some convenience event helper functions for determining event types - add fixed point atan2 - fixed some tabs/spaces inconsistences (should all be spaces now?) - maybe some other minor things i've forgotten
74 lines
1.4 KiB
C
Executable file
74 lines
1.4 KiB
C
Executable file
#include "dglevent.h"
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#include "dgl.h"
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#include "dglutil.h"
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#include <string.h>
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volatile bool _events_enabled = false;
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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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bool 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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bool 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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bool events_poll(volatile 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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bool events_peek(volatile 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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int_enable();
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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((void*)_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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