keyboard/qmk/users/dennytom/chording_engine/engine.part.3

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bool are_hashed_keycodes_in_sound(HASH_TYPE keycodes_hash, HASH_TYPE sound) {
return (keycodes_hash & sound) == keycodes_hash;
}
uint8_t keycode_to_index(uint16_t keycode) {
return keycode - FIRST_INTERNAL_KEYCODE;
}
void sound_keycode_array(uint16_t keycode) {
uint8_t index = keycode_to_index(keycode);
keycode_index++;
keycodes_buffer_array[index] = keycode_index;
}
void silence_keycode_hash_array(HASH_TYPE keycode_hash) {
for (int i = 0; i < NUMBER_OF_KEYS; i++) {
bool index_in_hash = ((HASH_TYPE) 1 << i) & keycode_hash;
if (index_in_hash) {
uint8_t current_val = keycodes_buffer_array[i];
keycodes_buffer_array[i] = 0;
for (int j = 0; j < NUMBER_OF_KEYS; j++) {
if (keycodes_buffer_array[j] > current_val) {
keycodes_buffer_array[j]--;
}
}
keycode_index--;
}
}
}
bool are_hashed_keycodes_in_array(HASH_TYPE keycode_hash) {
for (int i = 0; i < NUMBER_OF_KEYS; i++) {
bool index_in_hash = ((HASH_TYPE) 1 << i) & keycode_hash;
bool index_in_array = (bool) keycodes_buffer_array[i];
if (index_in_hash && !index_in_array) {
return false;
}
}
return true;
}
void kill_one_shots(void) {
struct Chord chord_storage;
struct Chord* chord_ptr;
struct Chord* chord;
for (int i = 0; i < NUMBER_OF_CHORDS; i++) {
chord_ptr = (struct Chord*) pgm_read_word (&list_of_chords[i]);
memcpy_P(&chord_storage, chord_ptr, sizeof(struct Chord));
chord = &chord_storage;
if (*chord->state == IN_ONE_SHOT) {
*chord->state = RESTART;
chord->function(chord);
if (*chord->state == RESTART) {
*chord->state = IDLE;
}
}
}
}
void process_finished_dances(void) {
struct Chord chord_storage;
struct Chord* chord_ptr;
struct Chord* chord;
for (int i = 0; i < NUMBER_OF_CHORDS; i++) {
chord_ptr = (struct Chord*) pgm_read_word (&list_of_chords[i]);
memcpy_P(&chord_storage, chord_ptr, sizeof(struct Chord));
chord = &chord_storage;
if (*chord->state == ACTIVATED) {
*chord->state = PRESS_FROM_ACTIVE;
chord->function(chord);
if (a_key_went_through) {
kill_one_shots();
}
dance_timer = timer_read();
} else if (*chord->state == IDLE_IN_DANCE) {
*chord->state = FINISHED;
chord->function(chord);
if (*chord->state == FINISHED) {
*chord->state = RESTART;
if (*chord->state == RESTART) {
*chord->state = IDLE;
}
}
} else if (*chord->state == PRESS_FROM_ACTIVE) {
*chord->state = FINISHED_FROM_ACTIVE;
chord->function(chord);
if (a_key_went_through) {
kill_one_shots();
}
dance_timer = timer_read();
}
}
}
uint8_t keycodes_buffer_array_min(uint8_t* first_keycode_index) {
for (int i = 0; i < NUMBER_OF_KEYS; i++) {
if (keycodes_buffer_array[i] == 1) {
if (first_keycode_index != NULL) {
*first_keycode_index = (uint8_t) i;
}
return 1;
}
}
return 0;
}
void remove_subchords(void) {
struct Chord chord_storage;
struct Chord* chord_ptr;
struct Chord* chord;
for (int i = 0; i < NUMBER_OF_CHORDS; i++) {
chord_ptr = (struct Chord*) pgm_read_word (&list_of_chords[i]);
memcpy_P(&chord_storage, chord_ptr, sizeof(struct Chord));
chord = &chord_storage;
if (!(*chord->state == READY || *chord->state == READY_IN_DANCE || *chord->state == READY_LOCKED)) {
continue;
}
struct Chord chord_storage_2;
struct Chord* chord_ptr_2;
struct Chord* chord_2;
for (int j = 0; j < NUMBER_OF_CHORDS; j++) {
if (i == j) {continue;}
chord_ptr_2 = (struct Chord*) pgm_read_word (&list_of_chords[j]);
memcpy_P(&chord_storage_2, chord_ptr_2, sizeof(struct Chord));
chord_2 = &chord_storage_2;
if (are_hashed_keycodes_in_sound(chord_2->keycodes_hash, chord->keycodes_hash)) {
if (*chord_2->state == READY) {
*chord_2->state = IDLE;
}
if (*chord_2->state == READY_IN_DANCE) {
*chord_2->state = IDLE_IN_DANCE;
}
if (*chord_2->state == READY_LOCKED) {
*chord_2->state = LOCKED;
}
}
}
}
}
void process_ready_chords(void) {
uint8_t first_keycode_index = 0;
while (keycodes_buffer_array_min(&first_keycode_index)) {
// find ready chords
struct Chord chord_storage;
struct Chord* chord_ptr;
struct Chord* chord;
for (int i = 0; i < NUMBER_OF_CHORDS; i++) {
chord_ptr = (struct Chord*) pgm_read_word (&list_of_chords[i]);
memcpy_P(&chord_storage, chord_ptr, sizeof(struct Chord));
chord = &chord_storage;
// if the chord does not contain the first keycode
bool contains_first_keycode = ((uint32_t) 1 << first_keycode_index) & chord->keycodes_hash;
if (!contains_first_keycode) {
continue;
}
if (!are_hashed_keycodes_in_array(chord->keycodes_hash)){
continue;
}
if (*chord->state == LOCKED) {
*chord->state = READY_LOCKED;
continue;
}
if (!(chord->pseudolayer == current_pseudolayer || chord->pseudolayer == ALWAYS_ON)) {
continue;
}
if (*chord->state == IDLE) {
*chord->state = READY;
continue;
}
if (*chord->state == IDLE_IN_DANCE) {
*chord->state = READY_IN_DANCE;
}
}
// remove subchords
remove_subchords();
// execute logic
// this should be only one chord
for (int i = 0; i < NUMBER_OF_CHORDS; i++) {
chord_ptr = (struct Chord*) pgm_read_word (&list_of_chords[i]);
memcpy_P(&chord_storage, chord_ptr, sizeof(struct Chord));
chord = &chord_storage;
if (*chord->state == READY_LOCKED) {
*chord->state = RESTART;
chord->function(chord);
if (*chord->state == RESTART) {
*chord->state = IDLE;
}
break;
}
if (*chord->state == READY || *chord->state == READY_IN_DANCE) {
if (last_chord && last_chord != chord) {
process_finished_dances();
}
bool lock_next_prev_state = lock_next;
*chord->state = ACTIVATED;
chord->function(chord);
dance_timer = timer_read();
if (lock_next && lock_next == lock_next_prev_state) {
lock_next = false;
*chord->state = PRESS_FROM_ACTIVE;
chord->function(chord);
if (*chord->state == PRESS_FROM_ACTIVE) {
*chord->state = LOCKED;
}
if (a_key_went_through) {
kill_one_shots();
}
}
break;
}
}
// silence notes
silence_keycode_hash_array(chord->keycodes_hash);
}
}
void deactivate_active_chords(uint16_t keycode) {
HASH_TYPE hash = (HASH_TYPE)1 << (keycode - SAFE_RANGE);
bool broken;
struct Chord chord_storage;
struct Chord* chord_ptr;
struct Chord* chord;
for (int i = 0; i < NUMBER_OF_CHORDS; i++) {
chord_ptr = (struct Chord*) pgm_read_word (&list_of_chords[i]);
memcpy_P(&chord_storage, chord_ptr, sizeof(struct Chord));
chord = &chord_storage;
broken = are_hashed_keycodes_in_sound(hash, chord->keycodes_hash);
if (!broken) {
continue;
}
switch (*chord->state) {
case ACTIVATED:
*chord->state = DEACTIVATED;
chord->function(chord);
if (*chord->state == DEACTIVATED) {
dance_timer = timer_read();
*chord->state = IDLE_IN_DANCE;
}
if (*chord->state != IN_ONE_SHOT) {
kill_one_shots();
}
break;
case PRESS_FROM_ACTIVE:
case FINISHED_FROM_ACTIVE:
*chord->state = RESTART;
chord->function(chord);
if (*chord->state == RESTART) {
*chord->state = IDLE;
}
kill_one_shots();
break;
default:
break;
}
}
}
void process_command(void) {
command_mode = 0;
for (int i = 0; i < COMMAND_MAX_LENGTH; i++) {
if (command_buffer[i]) {
register_code(command_buffer[i]);
}
send_keyboard_report();
}
wait_ms(TAP_TIMEOUT);
for (int i = 0; i < COMMAND_MAX_LENGTH; i++) {
if (command_buffer[i]) {
unregister_code(command_buffer[i]);
}
send_keyboard_report();
}
for (int i = 0; i < COMMAND_MAX_LENGTH; i++) {
command_buffer[i] = 0;
}
command_ind = 0;
}
void process_leader(void) {
in_leader_mode = false;
for (int i = 0; i < NUMBER_OF_LEADER_COMBOS; i++) {
uint16_t trigger[LEADER_MAX_LENGTH];
memcpy_P(trigger, leader_triggers[i], LEADER_MAX_LENGTH * sizeof(uint16_t));
if (identical(leader_buffer, trigger)) {
(*leader_functions[i])();
break;
}
}
for (int i = 0; i < LEADER_MAX_LENGTH; i++) {
leader_buffer[i] = 0;
}
}
bool process_record_user(uint16_t keycode, keyrecord_t *record) {
if (keycode < FIRST_INTERNAL_KEYCODE || keycode > LAST_INTERNAL_KEYCODE) {
return true;
}
if (record->event.pressed) {
sound_keycode_array(keycode);
} else {
process_ready_chords();
deactivate_active_chords(keycode);
}
chord_timer = timer_read();
leader_timer = timer_read();
return false;
}
void matrix_scan_user(void) {
bool chord_timer_expired = timer_elapsed(chord_timer) > CHORD_TIMEOUT;
if (chord_timer_expired && keycodes_buffer_array_min(NULL)) {
process_ready_chords();
}
bool dance_timer_expired = timer_elapsed(dance_timer) > DANCE_TIMEOUT;
if (dance_timer_expired) { // would love to have && in_dance but not sure how
process_finished_dances();
}
bool in_command_mode = command_mode == 2;
if (in_command_mode) {
process_command();
}
bool leader_timer_expired = timer_elapsed(leader_timer) > LEADER_TIMEOUT;
if (leader_timer_expired && in_leader_mode) {
process_leader();
}
}
void clear(const struct Chord* self) {
if (*self->state == ACTIVATED) {
// kill all chords
struct Chord chord_storage;
struct Chord* chord_ptr;
struct Chord* chord;
for (int i = 0; i < NUMBER_OF_CHORDS; i++) {
chord_ptr = (struct Chord*) pgm_read_word (&list_of_chords[i]);
memcpy_P(&chord_storage, chord_ptr, sizeof(struct Chord));
chord = &chord_storage;
*chord->state = IDLE;
if (chord->counter) {
*chord->counter = 0;
}
}
// clear keyboard
clear_keyboard();
send_keyboard_report();
// switch to default pseudolayer
current_pseudolayer = DEFAULT_PSEUDOLAYER;
// clear all keyboard states
lock_next = false;
autoshift_mode = true;
command_mode = 0;
in_leader_mode = false;
leader_ind = 0;
dynamic_macro_mode = false;
a_key_went_through = false;
for (int i = 0; i < DYNAMIC_MACRO_MAX_LENGTH; i++) {
dynamic_macro_buffer[i] = 0;
}
}
}