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/*
* Tuxánci 2 - A first person shooter
* Copyright (C) 2007-2011 Tuxánci Development Team
* Copyright (C) 2025-2026 Connor Thomson
*
* This program 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.
*
* This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "ta_sdl.h"
#include "keyboard.h"
#include <stdlib.h>
#include <string.h>
static ta_key_callback_fn *ta_keyboard_callbacks = NULL;
static int ta_keyboard_callbacks_capacity = 0;
static int ta_keyboard_ensure_capacity(int key) {
if (key < ta_keyboard_callbacks_capacity) {
return 1;
}
int new_capacity = ta_keyboard_callbacks_capacity;
while (new_capacity <= key) {
new_capacity += sizeof(SDLK_UNKNOWN);
}
ta_key_callback_fn *new_array = realloc(
ta_keyboard_callbacks,
(size_t)new_capacity * sizeof(ta_key_callback_fn)
);
if (new_array == NULL) {
return 0;
}
memset(
new_array + ta_keyboard_callbacks_capacity,
0,
(size_t)(new_capacity - ta_keyboard_callbacks_capacity) * sizeof(ta_key_callback_fn)
);
ta_keyboard_callbacks = new_array;
ta_keyboard_callbacks_capacity = new_capacity;
return 1;
}
void ta_keyboard_set_callback(int key, void (*callback)(void)) {
if (key < 0 || !ta_keyboard_ensure_capacity(key)) {
return;
}
ta_keyboard_callbacks[key] = callback;
}
void ta_keyboard_dispatch(int key) {
if (key < 0) {
return;
}
if (key < ta_keyboard_callbacks_capacity && ta_keyboard_callbacks[key] != NULL) {
ta_keyboard_callbacks[key]();
}
}
void ta_keyboard_shutdown(void) {
if (ta_keyboard_callbacks) {
free(ta_keyboard_callbacks);
}
ta_keyboard_callbacks = NULL;
ta_keyboard_callbacks_capacity = 0;
}
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