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connectfour.c
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connectfour.c
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/*
Copyright (C) 2019 TheTrustedComputer
*/
#include "connectfour.h"
Position intpow(Position x, Position y) {
Position z = 1;
while (y) {
if (y & 1) {
z *= x;
}
x *= x;
y >>= 1;
}
return z;
}
int intlog2(Position x) {
if (!x) {
return -1;
}
int y = 0;
while (x > 1) {
x >>= 1;
++y;
}
return y;
}
unsigned popcount(Position x) {
unsigned count = 0u;
while (x) {
x &= x - 1;
++count;
}
return count;
}
void ConnectFour_setSizeAndVariant(unsigned newColumns, unsigned newRows, unsigned newVariant) {
#ifndef USE_MACROS
if (newColumns * (newRows + 1u) > 64u) {
newColumns = 7u;
newRows = 6u;
}
GAME_VARIANT = newVariant;
COLUMNS = newColumns;
ROWS = newRows;
COLUMNS_M1 = COLUMNS - 1u;
COLUMNS_X2 = COLUMNS << 1u;
COLUMNS_X2_P1 = COLUMNS_X2 + 1u;
COLUMNS_D2 = COLUMNS >> 1u;
ROWS_M1 = ROWS - 1u;
ROWS_P1 = ROWS + 1u;
ROWS_P2 = ROWS + 2u;
AREA = COLUMNS * ROWS;
switch (GAME_VARIANT) {
case POPOUT_VARIANT:
case POPTEN_VARIANT:
HISTORYSIZE = 41u;
MOVESIZE = (HISTORYSIZE << 5u) + (AREA << 6u);
break;
case POWERUP_VARIANT:
MOVESIZE = AREA + (AREA << 1u);
break;
default:
MOVESIZE = AREA;
}
MOVESIZE_M1 = MOVESIZE - 1u;
#else
GAME_VARIANT = newVariant;
#endif
}
void ConnectFour_setupBitmaps(void) {
unsigned i;
BOT = ConnectFour_bottom();
ALL = BOT * (((Position)1ull << ROWS) - (Position)1ull);
TOP = BOT << ROWS;
COLS = (((Position)1ull << ROWS_P1) - 1ull);
ALLCOLS = COLS >> 1ull;
EVENROWS = 0ull;
ODDROWS = BOT;
for (i = 0u; i < ROWS; ++i) {
(i & 1u) ? (EVENROWS |= BOT << i) : (ODDROWS ^= BOT << i);
}
}
void ConnectFour_initialize(ConnectFour *cf) {
if (!(cf->board = malloc(sizeof(Position) * 2))) {
fprintf(stderr, "Could not set up memory for the Connect Four board.");
exit(EXIT_FAILURE);
}
if (!(cf->height = malloc(sizeof(uint8_t) * COLUMNS))) {
fprintf(stderr, "Could not utilize memory for the board height information.");
exit(EXIT_FAILURE);
}
switch (GAME_VARIANT) {
case POPTEN_VARIANT:
{
if (!(cf->ptm = malloc(sizeof(PopTenMove) * (MOVESIZE + 1ull)))) {
fprintf(stderr, "Could not add on to memory for Pop Ten move structure.");
exit(EXIT_FAILURE);
}
else {
unsigned i;
cf->ptm->size = 0;
for (i = 0; i <= MOVESIZE; ++i) {
if (!(cf->ptm[i].pops = malloc(sizeof(uint8_t) * 11ull))) {
fprintf(stderr, "Could not drop by in memory for Pop Ten pop moves.");
exit(EXIT_FAILURE);
}
else {
cf->ptm[i].size = 0;
}
}
}
}
case POPOUT_VARIANT:
if (!(cf->history = malloc(sizeof(Position) * HISTORYSIZE))) {
fprintf(stderr, "Could not handle memory for the position history.");
exit(EXIT_FAILURE);
}
case FIVEINAROW_VARIANT:
case NORMAL_VARIANT:
if ((GAME_VARIANT != POPTEN_VARIANT) && !(cf->moves = malloc(sizeof(uint8_t) * MOVESIZE))) {
fprintf(stderr, "Could not use memory for storing played moves.");
exit(EXIT_FAILURE);
}
break;
case POWERUP_VARIANT:
if (!(cf->pc = malloc(sizeof(PowerCheckers)))) {
fprintf(stderr, "Could not make room in memory for the Power Checkers bitboard.");
exit(EXIT_FAILURE);
}
if (!(cf->pum = malloc(sizeof(PowerUpMove) * MOVESIZE))) {
fprintf(stderr, "Could not register memory for Power Up moves.");
exit(EXIT_FAILURE);
}
break;
}
ConnectFour_reset(cf, false);
}
void ConnectFour_reset(ConnectFour *cf, const bool keepBitmaps) {
unsigned i;
cf->board[0] = cf->board[1] = 0;
cf->plyNumber = 0;
for (i = 0; i < COLUMNS; ++i) {
cf->height[i] = ROWS_P1 * i;
}
switch (GAME_VARIANT) {
case POPOUT_VARIANT:
ConnectFour_clearHistory(cf);
case NORMAL_VARIANT:
cf->moves[0] = '\xff';
break;
case POWERUP_VARIANT:
for (i = 0; i < MOVESIZE; ++i) {
cf->pum[i].status = POWERUP_DROP_NORMAL_OR_ANVIL;
}
cf->pc->anvil = cf->pc->bomb = cf->pc->wall = cf->pc->x2 = 0;
cf->playedPowerCheckers = 0;
userPowerUpDiskType = DROPTYPE_NORMAL;
userPowerCheckerReadyToMoveFlag = 0;
break;
case POPTEN_VARIANT:
ConnectFour_popten_reset(cf, keepBitmaps);
}
}
void ConnectFour_popten_reset(ConnectFour *cf, const bool bitmap) {
unsigned c;
popTenFlags = POPTEN_DROP;
cf->ptm->size = 1;
cf->ptm->pops[0] = popTenFlags;
if (!bitmap) {
unsigned d, e, f, column, remainingColumns, *setupColumns = malloc(sizeof(unsigned) * COLUMNS);
init_genrand64((unsigned long long)(time(NULL) ^ getpid()));
cf->collectedDisks = 0;
for (c = 0; c < COLUMNS; ++c) {
cf->height[c] = ROWS_P1 * c;
}
for (c = 0; c < ROWS; ++c) {
for (d = 0; d < COLUMNS; ++d) {
setupColumns[d] = d;
}
remainingColumns = COLUMNS;
for (d = 0; d < COLUMNS; ++d) {
column = setupColumns[genrand64_int64() % (unsigned long long)remainingColumns];
cf->board[cf->plyNumber++ & 1u] |= (Position)1ull << cf->height[column]++;
for (e = 0;; ++e) {
if (setupColumns[e] == column) {
for (f = e; f < remainingColumns - 1; ++f) {
setupColumns[f] = setupColumns[f + 1];
}
--remainingColumns;
break;
}
}
}
}
cf->plyNumber = 0;
popTenBitmap[0] = cf->board[0];
popTenBitmap[1] = cf->board[1];
free(setupColumns);
}
else {
cf->collectedDisks = 0;
cf->plyNumber = 0;
cf->board[0] = popTenBitmap[0];
cf->board[1] = popTenBitmap[1];
for (c = 0; c < COLUMNS; ++c) {
cf->height[c] = ROWS_P1 * c + ROWS;
}
}
}
void ConnectFour_destroy(ConnectFour *cf) {
switch (GAME_VARIANT) {
case POPOUT_VARIANT:
free(cf->history);
cf->history = NULL;
case FIVEINAROW_VARIANT:
case NORMAL_VARIANT:
free(cf->moves);
cf->moves = NULL;
break;
case POWERUP_VARIANT:
free(cf->pc);
cf->pc = NULL;
free(cf->pum);
cf->pum = NULL;
break;
case POPTEN_VARIANT:
{
for (unsigned i = 0; i < 12; ++i) {
free(cf->ptm[i].pops);
cf->ptm[i].pops = NULL;
}
free(cf->ptm);
cf->ptm = NULL;
}
}
}
void ConnectFour_printBoard(const ConnectFour *cf) {
unsigned i, j;
#ifdef _WIN32
HANDLE handle = GetStdHandle(STD_OUTPUT_HANDLE);
#endif
if (cf->plyNumber & 1u) {
#ifdef _WIN32
SetConsoleTextAttribute(handle, 0xc);
#else
printf("\e[1;91m");
#endif
}
else {
#ifdef _WIN32
SetConsoleTextAttribute(handle, 0xe);
#else
printf("\e[1;93m");
#endif
}
for (i = 0; i < COLUMNS; ++i) {
printf(" %u", i + 1u);
}
#ifdef __unix__
printf("\e[0m");
#endif
puts("");
for (i = ROWS_M1; i != (unsigned)-1; --i) {
for (j = 0; j < COLUMNS; ++j) {
Position bit = intpow(2, (Position)ROWS_P1 * j) * intpow(2, i);
if (GAME_VARIANT == POWERUP_VARIANT) {
if (bit & cf->board[0] & cf->pc->anvil) {
#ifdef _WIN32
SetConsoleTextAttribute(handle, 0xe6);
printf("AN");
#elif defined(__unix__)
printf("\e[7;1;33;43mAN\e[0m");
#endif
continue;
}
else if (bit & cf->board[1] & cf->pc->anvil) {
#ifdef _WIN32
SetConsoleTextAttribute(handle, 0xc4);
printf("AN");
#elif defined(__unix__)
printf("\e[7;1;31;41mAN\e[0m");
#endif
continue;
}
else if (bit & cf->board[0] & cf->pc->bomb) {
#ifdef _WIN32
SetConsoleTextAttribute(handle, 0xe6);
printf("BM");
#elif defined(__unix__)
printf("\e[7;1;33;43mBM\e[0m");
#endif
continue;
}
else if (bit & cf->board[1] & cf->pc->bomb) {
#ifdef _WIN32
SetConsoleTextAttribute(handle, 0xc4);
printf("BM");
#elif defined(__unix__)
printf("\e[7;1;31;41mBM\e[0m");
#endif
continue;
}
else if (bit & cf->board[0] & cf->pc->wall) {
#ifdef _WIN32
SetConsoleTextAttribute(handle, 0xe6);
printf("WL");
#elif defined(__unix__)
printf("\e[7;1;33;43mWL\e[0m");
#endif
continue;
}
else if (bit & cf->board[1] & cf->pc->wall) {
#ifdef _WIN32
SetConsoleTextAttribute(handle, 0xc4);
printf("WL");
#elif defined(__unix__)
printf("\e[7;1;31;41mWL\e[0m");
#endif
continue;
}
else if (bit & cf->board[0] & cf->pc->x2) {
#ifdef _WIN32
SetConsoleTextAttribute(handle, 0xe6);
printf("X2");
#elif defined(__unix__)
printf("\e[7;1;33;43mX2\e[0m");
#endif
continue;
}
else if (bit & cf->board[1] & cf->pc->x2) {
#ifdef _WIN32
SetConsoleTextAttribute(handle, 0xc4);
printf("X2");
#elif defined(__unix__)
printf("\e[7;1;31;41mX2\e[0m");
#endif
continue;
}
}
if (bit & cf->board[0]) {
#ifdef _WIN32
SetConsoleTextAttribute(handle, 0xe6);
printf("()");
#elif defined(__unix__)
printf("\e[7;1;33;43m()\e[0m");
#endif
}
else if (bit & cf->board[1]) {
#ifdef _WIN32
SetConsoleTextAttribute(handle, 0xc4);
printf("()");
#elif defined(__unix__)
printf("\e[7;1;31;41m()\e[0m");
#endif
}
else {
#ifdef _WIN32
SetConsoleTextAttribute(handle, 0x18);
printf("()");
#elif defined(__unix__)
printf("\e[37;44m()\e[0m");
#endif
}
}
if (i) {
#ifdef _WIN32
SetConsoleTextAttribute(handle, 0x7);
#elif defined(__unix__)
printf("\e[0m");
#endif
puts("");
}
}
#ifdef _WIN32
SetConsoleTextAttribute(handle, 0x7);
#endif
switch (GAME_VARIANT) {
case POPTEN_VARIANT:
printf("\n%c%d %c%d", PLAYER1_NAME[0], ConnectFour_popten_getPoppedDisks(cf, false), PLAYER2_NAME[0], ConnectFour_popten_getPoppedDisks(cf, true));
}
puts("");
}
void ConnectFour_printMoves(const ConnectFour *cf) {
for (unsigned i = 0; i < cf->plyNumber; ++i) {
printf("%c", (cf->moves[i] < COLUMNS) ? (unsigned)(cf->moves[i] + '1') : cf->moves[i] - COLUMNS + 'A');
}
}
Position ConnectFour_connection(const Position POS) {
Position ver, hor, di1, di2;
ver = POS & (POS >> 1);
hor = POS & (POS >> ROWS_P1);
di1 = POS & (POS >> ROWS);
di2 = POS & (POS >> ROWS_P2);
return (ver & (ver >> 2ull)) | (hor & (hor >> (ROWS_P1 << 1u))) | (di1 & (di1 >> (ROWS << 1u))) | (di2 & (di2 >> (ROWS_P2 << 1u)));
}
Position ConnectFour_connectionNoVertical(const Position POS) {
Position hor, di1, di2;
hor = POS & (POS >> ROWS_P1);
di1 = POS & (POS >> ROWS);
di2 = POS & (POS >> ROWS_P2);
return (hor & (hor >> (ROWS_P1 << 1u))) | (di1 & (di1 >> (ROWS << 1u))) | (di2 & (di2 >> (ROWS_P2 << 1u)));
}
Position ConnectFour_popten_connection(const Position POS) {
Position ver, hor, hor1, di1, di2;
ver = POS & (POS >> 1ull);
hor = POS & (POS >> ROWS_P1);
di1 = POS & (POS >> ROWS);
di2 = POS & (POS >> ROWS_P2);
hor1 = (hor & (hor >> (ROWS_P1 << 1u)));
return (ver & (ver >> 2ull)) | (hor1 | (hor1 << ROWS_P1) | (hor1 << (ROWS_P1 << 1u)) | (hor1 << (ROWS_P1 + (ROWS_P1 << 1u)))) | (di1 & (di1 >> (ROWS << 1u))) << (ROWS + (ROWS << 1)) | (di2 & (di2 >> (ROWS_P2 << 1u)));
}
Position ConnectFour_fiveinarow_connection(const Position POS) {
// Position ver, hor, di1, di2;
return 0;
}
Position ConnectFour_calculateAllThreats(const Position POS) {
Position totalThreats, currentThreats;
// Vertical
totalThreats = (POS << 1ull) & (POS << 2ull) & (POS << 3ull);
// Horizontal going right
currentThreats = (POS << ROWS_P1) & (POS << (ROWS_P1 << 1u));
totalThreats |= currentThreats & (POS >> ROWS_P1);
totalThreats |= currentThreats & (POS << ((ROWS_P1 << 1u) + ROWS_P1));
// Left
currentThreats = (POS >> ROWS_P1) & (POS >> (ROWS_P1 << 1u));
totalThreats |= currentThreats & (POS << ROWS_P1);
totalThreats |= currentThreats & (POS >> ((ROWS_P1 << 1u) + ROWS_P1));
// Positive slope diagonal going downleft
currentThreats = (POS << ROWS_P2) & (POS << (ROWS_P2 << 1u));
totalThreats |= currentThreats & (POS >> ROWS_P2);
totalThreats |= currentThreats & (POS << ((ROWS_P2 << 1u) + ROWS_P2));
// Upright
currentThreats = (POS >> ROWS_P2) & (POS >> (ROWS_P2 << 1u));
totalThreats |= currentThreats & (POS << ROWS_P2);
totalThreats |= currentThreats & (POS >> ((ROWS_P2 << 1u) + ROWS_P2));
// Negative slope diagonal going downright
currentThreats = (POS << ROWS) & (POS << (ROWS << 1u));
totalThreats |= currentThreats & (POS >> ROWS);
totalThreats |= currentThreats & (POS << ((ROWS << 1u) + ROWS));
// Upleft
currentThreats = (POS >> ROWS) & (POS >> (ROWS << 1u));
totalThreats |= currentThreats & (POS << ROWS);
return (totalThreats | (currentThreats & (POS >> ((ROWS << 1u) + ROWS)))) & ALL;
}
LargePosition ConnectFour_LargePosition_connection(const LargePosition lb) {
LargePosition l_ver, l_hor, l_di1, l_di2;
l_ver = LargePosition_bitwise_and(lb, LargePosition_rightShift(lb, (LargePosition) { 1ull, 0ull }));
l_di1 = LargePosition_bitwise_and(lb, LargePosition_rightShift(lb, (LargePosition) { ROWS, 0ull }));
l_hor = LargePosition_bitwise_and(lb, LargePosition_rightShift(lb, (LargePosition) { ROWS_P1, 0ull }));
l_di2 = LargePosition_bitwise_and(lb, LargePosition_rightShift(lb, (LargePosition) { ROWS_P2, 0ull }));
l_ver = LargePosition_bitwise_and(l_ver, LargePosition_rightShift(l_ver, (LargePosition) { 2ull, 0ull }));
l_di1 = LargePosition_bitwise_and(l_di1, LargePosition_rightShift(l_di1, (LargePosition) { (uint_fast64_t)ROWS << 1ull, 0ull }));
l_hor = LargePosition_bitwise_and(l_hor, LargePosition_rightShift(l_hor, (LargePosition) { (uint_fast64_t)ROWS_P1 << 1ull, 0ull }));
l_di2 = LargePosition_bitwise_and(l_di2, LargePosition_rightShift(l_di2, (LargePosition) { (uint_fast64_t)ROWS_P2 << 1ull, 0ull }));
return LargePosition_bitwise_or(LargePosition_bitwise_or(l_ver, l_di1), LargePosition_bitwise_or(l_hor, l_di2));
}
bool ConnectFour_hasTenDisks(const ConnectFour *cf) {
return (popTenFlags == POPTEN_POP_CONNECTION) ? ((cf->plyNumber & 1u) ? ((cf->collectedDisks & 0xf0) >= 0xa0) : ((cf->collectedDisks & 0xf) >= 0xa)) : false;
}
int8_t ConnectFour_repeatIndex(const int8_t index) {
return (index - 4 < 0) ? (index + (int8_t)(HISTORYSIZE - 4)) : (index - 4);
}
bool ConnectFour_repetition(const ConnectFour *cf) {
uint8_t first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth;
Position hash = ConnectFour_getHashKey(cf), mirrorHash = ConnectFour_reverse(hash);
first = ConnectFour_previousHistory(cf->historyIndex);
second = ConnectFour_repeatIndex(first);
third = ConnectFour_repeatIndex(second);
fourth = ConnectFour_repeatIndex(third);
fifth = ConnectFour_repeatIndex(fourth);
sixth = ConnectFour_repeatIndex(fifth);
seventh = ConnectFour_repeatIndex(sixth);
eighth = ConnectFour_repeatIndex(seventh);
ninth = ConnectFour_repeatIndex(eighth);
tenth = ConnectFour_repeatIndex(ninth);
return (hash == cf->history[first] && hash == cf->history[second] && hash == cf->history[third] && hash == cf->history[fourth] && hash == cf->history[fifth] &&
hash == cf->history[sixth] && hash == cf->history[seventh] && hash == cf->history[eighth] && hash == cf->history[ninth] && hash == cf->history[tenth]) ||
(hash == cf->history[first] && mirrorHash == cf->history[second] && hash == cf->history[third] && mirrorHash == cf->history[fourth] && hash == cf->history[fifth] &&
mirrorHash == cf->history[sixth] && hash == cf->history[seventh] && mirrorHash == cf->history[eighth] && hash == cf->history[ninth] && mirrorHash == cf->history[tenth]) ||
(mirrorHash == cf->history[first] && hash == cf->history[second] && mirrorHash == cf->history[third] && hash == cf->history[fourth] && mirrorHash == cf->history[fifth] &&
hash == cf->history[sixth] && mirrorHash == cf->history[seventh] && hash == cf->history[eighth] && mirrorHash == cf->history[ninth] && hash == cf->history[tenth]);
}
bool ConnectFour_gameOver(const ConnectFour *cf) {
switch (GAME_VARIANT) {
case POPOUT_VARIANT:
return ConnectFour_connection(cf->board[0]) || ConnectFour_connection(cf->board[1]) || cf->plyNumber >= MOVESIZE;
case POPTEN_VARIANT:
return ConnectFour_hasTenDisks(cf) || cf->plyNumber >= MOVESIZE;
default:
return ConnectFour_connection(cf->board[0]) || ConnectFour_connection(cf->board[1]) || cf->plyNumber >= AREA;
}
}
bool ConnectFour_normal_drop(ConnectFour *cf, const int COLUMN) {
Position dropper = (Position)1ull << cf->height[COLUMN];
if (!(dropper & TOP)) {
cf->board[cf->plyNumber & 1u] |= dropper;
cf->moves[cf->plyNumber++] = COLUMN;
++cf->height[COLUMN];
return true;
}
return false;
}
void ConnectFour_normal_undrop(ConnectFour *cf) {
cf->board[cf->plyNumber & 1u] ^= (Position)1ull << --cf->height[cf->moves[--cf->plyNumber]];
}
bool ConnectFour_LargePosition_normal_drop(ConnectFour *cf, const int COLUMN) {
LargePosition dropper, top;
dropper = LargePosition_leftShift((LargePosition){ 1ull, 0ull }, (LargePosition){cf->height[COLUMN], 0ull});
top = LargePosition_bitwise_and(dropper, L_TOP);
if (!LargePosition_bool(top)) {
cf->l_board[cf->plyNumber & 1u] = LargePosition_bitwise_or(cf->l_board[cf->plyNumber & 1u], dropper);
cf->moves[cf->plyNumber++] = COLUMN;
++cf->height[COLUMN];
return true;
}
return false;
}
void ConnectFour_LargePosition_normal_undrop(ConnectFour *cf) {
cf->l_board[cf->plyNumber & 1u] = LargePosition_bitwise_xor(cf->l_board[cf->plyNumber & 1u], LargePosition_leftShift((LargePosition) { 1ull, 0ull }, (LargePosition) { --cf->height[cf->moves[--cf->plyNumber]], 0ull }));
}
bool ConnectFour_popout_drop(ConnectFour *cf, const int COLUMN) {
if (ConnectFour_normal_drop(cf, COLUMN)) {
ConnectFour_addHistory(cf);
return true;
}
return false;
}
void ConnectFour_popout_undrop(ConnectFour *cf) {
ConnectFour_normal_undrop(cf);
cf->historyIndex = ConnectFour_previousHistory(cf->historyIndex);
}
bool ConnectFour_popout_pop(ConnectFour *cf, const int COLUMN) {
Position bottomDisk = (Position)COLUMN * ROWS_P1, falls = ALLCOLS << bottomDisk;
if (cf->board[cf->plyNumber & 1u] & (Position)1ull << bottomDisk) {
cf->board[0] = ((cf->board[0] & (ALL ^ falls)) | ((cf->board[0] & falls) >> 1ull)) & ALL;
cf->board[1] = ((cf->board[1] & (ALL ^ falls)) | ((cf->board[1] & falls) >> 1ull)) & ALL;
--cf->height[COLUMN];
cf->moves[cf->plyNumber++] = COLUMN + COLUMNS;
ConnectFour_addHistory(cf);
return true;
}
return false;
}
bool ConnectFour_popout_popWinCheck(ConnectFour *cf, const int COLUMN) {
Position bottomDisk = (Position)COLUMN * ROWS_P1, falls = ALLCOLS << bottomDisk;
if (cf->board[cf->plyNumber & 1u] & (Position)1ull << bottomDisk) {
cf->board[0] = ((cf->board[0] & (ALL ^ falls)) | ((cf->board[0] & falls) >> 1ull)) & ALL;
cf->board[1] = ((cf->board[1] & (ALL ^ falls)) | ((cf->board[1] & falls) >> 1ull)) & ALL;
return true;
}
return false;
}
void ConnectFour_popout_unpop(ConnectFour *cf) {
uint8_t lastPop = cf->moves[--cf->plyNumber] - COLUMNS;
Position bottomDisk = (Position)lastPop * ROWS_P1, falls = ALLCOLS << bottomDisk;
cf->board[0] = (cf->board[0] & (ALL ^ falls)) | (cf->board[0] & falls) << 1ull;
cf->board[1] = (cf->board[1] & (ALL ^ falls)) | (cf->board[1] & falls) << 1ull;
cf->board[cf->plyNumber & 1ull] |= (Position)1ull << bottomDisk;
++cf->height[lastPop];
cf->historyIndex = ConnectFour_previousHistory(cf->historyIndex);
}
void ConnectFour_popout_unpopWinCheck(ConnectFour *cf, const int COLUMN) {
Position bottomDisk = (Position)COLUMN * ROWS_P1, falls = ALLCOLS << bottomDisk;
cf->board[0] = (cf->board[0] & (ALL ^ falls)) | (cf->board[0] & falls) << 1ull;
cf->board[1] = (cf->board[1] & (ALL ^ falls)) | (cf->board[1] & falls) << 1ull;
cf->board[cf->plyNumber & 1ull] |= (Position)1ull << bottomDisk;
}
void ConnectFour_popout_undoMoveRepetition(ConnectFour *cf) {
for (unsigned i = 0u; i < HISTORYSIZE - 5u; ++i) {
cf->moves[cf->plyNumber - 1u] < COLUMNS ? ConnectFour_popout_undrop(cf) : ConnectFour_popout_unpop(cf);
}
}
bool ConnectFour_powerup_drop(ConnectFour *cf, const int COLUMN) {
Position dropper = (Position)1ull << cf->height[COLUMN];
unsigned turn = cf->plyNumber & 1u;
if (((cf->pum[cf->plyNumber].status == POWERUP_DROP_NORMAL_OR_ANVIL) || (cf->pum[cf->plyNumber].status == POWERUP_DROP_WALL) || (cf->pum[cf->plyNumber].status == POWERUP_DROP_X2)) && !(dropper & TOP)) {
switch (cf->pum[cf->plyNumber].status) {
case POWERUP_DROP_WALL:
if (ConnectFour_connection(cf->board[turn] | dropper)) {
return false;
}
case POWERUP_DROP_X2:
cf->pum[cf->plyNumber].status |= POWERUP_DROP_NORMAL_OR_ANVIL;
break;
default:
cf->pum[cf->plyNumber].status = POWERUP_DROP_NORMAL_OR_ANVIL;
cf->pum[cf->plyNumber].diskType = DROPTYPE_NORMAL;
cf->pum[cf->plyNumber].powerColumn = -1;
}
cf->board[turn] |= dropper;
cf->pum[cf->plyNumber++].normalColumn = COLUMN;
++cf->height[COLUMN];
return true;
}
return false;
}
void ConnectFour_powerup_undrop(ConnectFour *cf) {
if (cf->pum[cf->plyNumber].status == POWERUP_DROP_NORMAL_OR_ANVIL) {
--cf->plyNumber;
switch (cf->pum[cf->plyNumber].status) {
case POWERUP_DROP_NORMAL_OR_ANVIL | POWERUP_DROP_WALL:
case POWERUP_DROP_NORMAL_OR_ANVIL | POWERUP_DROP_X2:
cf->pum[cf->plyNumber].status ^= POWERUP_DROP_NORMAL_OR_ANVIL;
break;
}
}
cf->board[cf->plyNumber & 1u] ^= (Position)1ull << --cf->height[cf->pum[cf->plyNumber].normalColumn];
}
bool ConnectFour_powerup_dropAnvil(ConnectFour *cf, const int ANVIL_COLUMN) {
unsigned turn = cf->plyNumber & 1u;
uint8_t played = turn ? (cf->playedPowerCheckers & PLAYER2_ANVILBIT) : (cf->playedPowerCheckers & PLAYER1_ANVILBIT);
if (cf->pum[cf->plyNumber].status == POWERUP_DROP_NORMAL_OR_ANVIL && !played) {
Position dropper = (Position)1ull << cf->height[ANVIL_COLUMN], bottomDisk = (Position)ANVIL_COLUMN * ROWS_P1, falls = ALLCOLS << bottomDisk;
if (!(dropper & TOP)) {
anvilColumnNormals[turn][0] = cf->board[0] & falls;
anvilColumnNormals[turn][1] = cf->board[1] & falls;
anvilColumnAnvils[turn] = cf->pc->anvil & falls;
anvilColumnBombs[turn] = cf->pc->bomb & falls;
anvilColumnWalls[turn] = cf->pc->wall & falls;
anvilColumnX2s[turn] = cf->pc->x2 & falls;
cf->board[0] &= ALL ^ falls;
cf->board[1] &= ALL ^ falls;
cf->pc->anvil &= ALL ^ falls;
cf->pc->bomb &= ALL ^ falls;
cf->pc->wall &= ALL ^ falls;
cf->pc->x2 &= ALL ^ falls;
cf->pc->anvil |= (Position)1ull << bottomDisk;
cf->board[turn] |= (Position)1ull << bottomDisk;
anvilHeight[turn] = cf->height[ANVIL_COLUMN];
cf->height[ANVIL_COLUMN] = (unsigned)bottomDisk + 1u;
ConnectFour_powerup_incrementPlayedPowerCheckers(cf, DROPTYPE_ANVIL);
cf->pum[cf->plyNumber].diskType = DROPTYPE_ANVIL;
cf->pum[cf->plyNumber].normalColumn = -1;
cf->pum[cf->plyNumber++].powerColumn = ANVIL_COLUMN;
return true;
}
}
return false;
}
void ConnectFour_powerup_undropAnvil(ConnectFour *cf) {
unsigned turn = --cf->plyNumber & 1u;
cf->board[cf->plyNumber & 1] ^= (Position)1ull << --cf->height[cf->pum[cf->plyNumber].powerColumn];
cf->pc->anvil ^= (Position)1ull << cf->height[cf->pum[cf->plyNumber].powerColumn];
cf->height[cf->pum[cf->plyNumber].powerColumn] = anvilHeight[turn];
cf->board[0] |= anvilColumnNormals[turn][0];
cf->board[1] |= anvilColumnNormals[turn][1];
cf->pc->anvil |= anvilColumnAnvils[turn];
cf->pc->bomb |= anvilColumnBombs[turn];
cf->pc->wall |= anvilColumnWalls[turn];
cf->pc->x2 |= anvilColumnX2s[turn];
ConnectFour_powerup_decrementPlayedPowerCheckers(cf);
}
bool ConnectFour_powerup_dropBomb(ConnectFour *cf, const int BOMB_COLUMN) {
unsigned turn = cf->plyNumber & 1u;
uint8_t played = turn ? (cf->playedPowerCheckers & PLAYER2_BOMBBIT) : (cf->playedPowerCheckers & PLAYER1_BOMBBIT);
if (cf->pum[cf->plyNumber].status == POWERUP_DROP_NORMAL_OR_ANVIL && !played) {
Position dropper = (Position)1ull << cf->height[BOMB_COLUMN];
if (!(dropper & TOP) && (cf->board[!turn] & BOT)) {
cf->pc->bomb |= dropper;
cf->board[turn] |= dropper;
++cf->height[BOMB_COLUMN];
cf->pum[cf->plyNumber].status = POWERUP_DROP_BOMB;
cf->pum[cf->plyNumber].diskType = DROPTYPE_BOMB;
cf->pum[cf->plyNumber].normalColumn = -1;
cf->pum[cf->plyNumber].powerColumn = BOMB_COLUMN;
ConnectFour_powerup_incrementPlayedPowerCheckers(cf, DROPTYPE_BOMB);
return true;
}
}
return false;
}
void ConnectFour_powerup_undropBomb(ConnectFour *cf) {
cf->board[cf->plyNumber & 1u] ^= (Position)1ull << --cf->height[cf->pum[cf->plyNumber].powerColumn];
cf->pc->bomb ^= (Position)1ull << cf->height[cf->pum[cf->plyNumber].powerColumn];
cf->pum[cf->plyNumber].status = POWERUP_DROP_NORMAL_OR_ANVIL;
ConnectFour_powerup_decrementPlayedPowerCheckers(cf);
}
bool ConnectFour_powerup_dropWall(ConnectFour *cf, const int WALL_COLUMN) {
unsigned turn = cf->plyNumber & 1u;
uint8_t played = turn ? (cf->playedPowerCheckers & PLAYER2_WALLBIT) : (cf->playedPowerCheckers & PLAYER1_WALLBIT);
if (cf->pum[cf->plyNumber].status == POWERUP_DROP_NORMAL_OR_ANVIL && !played) {
Position dropper = (Position)1ull << cf->height[WALL_COLUMN];
if (!((dropper & TOP) || ConnectFour_connection(cf->board[turn] | dropper))) {
cf->pc->wall |= dropper;
cf->board[turn] |= dropper;
++cf->height[WALL_COLUMN];
cf->pum[cf->plyNumber].status = POWERUP_DROP_WALL;
cf->pum[cf->plyNumber].diskType = DROPTYPE_WALL;
cf->pum[cf->plyNumber].powerColumn = WALL_COLUMN;
cf->pum[cf->plyNumber].normalColumn = -1;
ConnectFour_powerup_incrementPlayedPowerCheckers(cf, DROPTYPE_WALL);
return true;
}
}
return false;
}
void ConnectFour_powerup_undropWall(ConnectFour *cf) {
if (cf->pum[cf->plyNumber].status == POWERUP_DROP_WALL) {
cf->board[cf->plyNumber & 1u] ^= (Position)1ull << --cf->height[cf->pum[cf->plyNumber].powerColumn];
cf->pc->wall ^= (Position)1ull << cf->height[cf->pum[cf->plyNumber].powerColumn];
cf->pum[cf->plyNumber].status = POWERUP_DROP_NORMAL_OR_ANVIL;
ConnectFour_powerup_decrementPlayedPowerCheckers(cf);
}
else {
ConnectFour_powerup_undrop(cf);
}
}
bool ConnectFour_powerup_dropX2(ConnectFour *cf, const int X2_COLUMN) {
unsigned turn = cf->plyNumber & 1u;
uint8_t played = turn ? (cf->playedPowerCheckers & PLAYER2_X2BIT) : (cf->playedPowerCheckers & PLAYER1_X2BIT);
if (cf->pum[cf->plyNumber].status == POWERUP_DROP_NORMAL_OR_ANVIL && !played) {
Position dropper = (Position)1ull << cf->height[X2_COLUMN];
if (!(dropper & TOP)) {
cf->pc->x2 |= dropper;
cf->board[turn] |= dropper;
++cf->height[X2_COLUMN];
cf->pum[cf->plyNumber].status = POWERUP_DROP_X2;
cf->pum[cf->plyNumber].diskType = DROPTYPE_X2;
cf->pum[cf->plyNumber].powerColumn = X2_COLUMN;
cf->pum[cf->plyNumber].normalColumn = -1;
ConnectFour_powerup_incrementPlayedPowerCheckers(cf, DROPTYPE_X2);
return true;
}
}
return false;
}
void ConnectFour_powerup_undropX2(ConnectFour *cf) {
if (cf->pum[cf->plyNumber].status == POWERUP_DROP_X2) {
cf->board[cf->plyNumber & 1u] ^= (Position)1ull << --cf->height[cf->pum[cf->plyNumber].powerColumn];
cf->pc->x2 ^= (Position)1ull << cf->height[cf->pum[cf->plyNumber].powerColumn];
cf->pum[cf->plyNumber].status = POWERUP_DROP_NORMAL_OR_ANVIL;
ConnectFour_powerup_decrementPlayedPowerCheckers(cf);
}
else {
ConnectFour_powerup_undrop(cf);
}
}
bool ConnectFour_powerup_pop(ConnectFour *cf, const int COLUMN) {
if (cf->pum[cf->plyNumber].status == POWERUP_DROP_BOMB) {
//ConnectFour_printBoard(cf);
Position bottomDisk = (Position)COLUMN * ROWS_P1, falls = COLS << bottomDisk, popped = (Position)1ull << bottomDisk;
unsigned turn = (cf->plyNumber & 1u), opponentTurn = !turn;
//const unsigned short BOMB_COUNT = turn ? (cf->playedPowerCheckers & PLAYER2_BOMBMASK) >> PLAYER2_BOMBSHIFT : (cf->playedPowerCheckers & PLAYER1_BOMBMASK) >> PLAYER1_BOMBSHIFT;
if (cf->board[opponentTurn] & cf->pc->anvil & popped) {
bombPoppedType[opponentTurn] = DROPTYPE_ANVIL;
goto popper;
}
if (cf->board[opponentTurn] & cf->pc->bomb & popped) {
bombPoppedType[opponentTurn] = DROPTYPE_BOMB;
goto popper;
}
if (cf->board[opponentTurn] & cf->pc->wall & popped) {
bombPoppedType[opponentTurn] = DROPTYPE_WALL;
goto popper;
}
if (cf->board[opponentTurn] & cf->pc->x2 & popped) {
bombPoppedType[opponentTurn] = DROPTYPE_X2;
goto popper;
}
if (cf->board[opponentTurn] & popped) {
bombPoppedType[opponentTurn] = DROPTYPE_NORMAL;
goto popper;
}
goto invalid;
popper:
cf->board[0] = ((cf->board[0] & (ALL ^ falls)) | ((cf->board[0] & falls) >> 1ull)) & ALL;
cf->board[1] = ((cf->board[1] & (ALL ^ falls)) | ((cf->board[1] & falls) >> 1ull)) & ALL;
cf->pc->anvil = ((cf->pc->anvil & (ALL ^ falls)) | ((cf->pc->anvil & falls) >> 1ull)) & ALL;
cf->pc->bomb = ((cf->pc->bomb & (ALL ^ falls)) | ((cf->pc->bomb & falls) >> 1ull)) & ALL;
cf->pc->wall = ((cf->pc->wall & (ALL ^ falls)) | ((cf->pc->wall & falls) >> 1ull)) & ALL;
cf->pc->x2 = ((cf->pc->x2 & (ALL ^ falls)) | ((cf->pc->x2 & falls) >> 1ull)) & ALL;
--cf->height[COLUMN];
cf->pum[cf->plyNumber].status |= POWERUP_DROP_NORMAL_OR_ANVIL;
cf->pum[cf->plyNumber++].normalColumn = COLUMN;
//ConnectFour_printBoard(cf);
return true;
}
invalid:
return false;
}
void ConnectFour_powerup_unpop(ConnectFour *cf) {
unsigned turn = --cf->plyNumber & 1u, opponentTurn = !turn;
//nsigned short bombCount = turn ? (cf->playedPowerCheckers & PLAYER2_BOMBMASK) >> PLAYER2_BOMBSHIFT : (cf->playedPowerCheckers & PLAYER1_BOMBMASK) >> PLAYER1_BOMBSHIFT;
uint8_t popper = cf->pum[cf->plyNumber].normalColumn;
Position bottomDisk = (Position)popper * ROWS_P1, falls = COLS << bottomDisk;
cf->pum[cf->plyNumber].status ^= POWERUP_DROP_NORMAL_OR_ANVIL;
cf->board[0] = (cf->board[0] & (ALL ^ falls)) | (cf->board[0] & falls) << 1ull;
cf->board[1] = (cf->board[1] & (ALL ^ falls)) | (cf->board[1] & falls) << 1ull;
cf->pc->anvil = (cf->pc->anvil & (ALL ^ falls)) | (cf->pc->anvil & falls) << 1ull;
cf->pc->bomb = (cf->pc->bomb & (ALL ^ falls)) | (cf->pc->bomb & falls) << 1ull;
cf->pc->wall = (cf->pc->wall & (ALL ^ falls)) | (cf->pc->wall & falls) << 1ull;
cf->pc->x2 = (cf->pc->x2 & (ALL ^ falls)) | (cf->pc->x2 & falls) << 1ull;
++cf->height[popper];
cf->board[opponentTurn] |= (Position)1ull << bottomDisk;
switch (bombPoppedType[opponentTurn]) {
case DROPTYPE_ANVIL:
cf->pc->anvil|= (Position)1ull << bottomDisk;
break;
case DROPTYPE_BOMB:
cf->pc->bomb |= (Position)1ull << bottomDisk;
break;
case DROPTYPE_WALL:
cf->pc->wall |= (Position)1ull << bottomDisk;
break;
case DROPTYPE_X2:
cf->pc->x2 |= (Position)1ull << bottomDisk;
}
//ConnectFour_printBoard(cf);
}
void ConnectFour_powerup_incrementPlayedPowerCheckers(ConnectFour *cf, const int TYPE) {
//unsigned short anvils, bombs, walls, x2s, others;
unsigned turn = cf->plyNumber & 1u;
switch (TYPE) {
case DROPTYPE_ANVIL:
/*anvils = turn ? (cf->playedPowerCheckers & PLAYER2_ANVILMASK) >> PLAYER2_ANVILSHIFT : (cf->playedPowerCheckers & PLAYER1_ANVILMASK) >> PLAYER1_ANVILSHIFT;
others = turn ? cf->playedPowerCheckers & ~PLAYER2_ANVILMASK : cf->playedPowerCheckers & ~PLAYER1_ANVILMASK;
cf->playedPowerCheckers = others | (++anvils << (turn ? PLAYER2_ANVILSHIFT : PLAYER1_ANVILSHIFT));*/
cf->playedPowerCheckers |= 1 << (turn ? PLAYER2_ANVILSHIFT : PLAYER1_ANVILSHIFT);
break;
case DROPTYPE_BOMB:
/*bombs = turn ? (cf->playedPowerCheckers & PLAYER2_BOMBMASK) >> PLAYER2_BOMBSHIFT : (cf->playedPowerCheckers & PLAYER1_BOMBMASK) >> PLAYER1_BOMBSHIFT;
others = turn ? cf->playedPowerCheckers & ~PLAYER2_BOMBMASK : cf->playedPowerCheckers & ~PLAYER1_BOMBMASK;
cf->playedPowerCheckers = others | (++bombs << (turn ? PLAYER2_BOMBSHIFT : PLAYER1_BOMBSHIFT));*/
cf->playedPowerCheckers |= 1 << (turn ? PLAYER2_BOMBSHIFT : PLAYER1_BOMBSHIFT);
break;
case DROPTYPE_WALL:
/*walls = turn ? (cf->playedPowerCheckers & PLAYER2_WALLMASK) >> PLAYER2_WALLSHIFT : (cf->playedPowerCheckers & PLAYER1_WALLMASK) >> PLAYER1_WALLSHIFT;
others = turn ? cf->playedPowerCheckers & ~PLAYER2_WALLMASK : cf->playedPowerCheckers & ~PLAYER1_WALLMASK;
cf->playedPowerCheckers = others | (++walls << (turn ? PLAYER2_WALLSHIFT : PLAYER1_WALLSHIFT));*/
cf->playedPowerCheckers |= 1 << (turn ? PLAYER2_WALLSHIFT : PLAYER1_WALLSHIFT);
break;
case DROPTYPE_X2:
/*x2s = turn ? (cf->playedPowerCheckers & PLAYER2_X2MASK) >> PLAYER2_X2SHIFT : (cf->playedPowerCheckers & PLAYER1_X2MASK) >> PLAYER1_X2SHIFT;
others = turn ? cf->playedPowerCheckers & ~PLAYER2_X2MASK : cf->playedPowerCheckers & ~PLAYER1_X2MASK;
cf->playedPowerCheckers = others | (++x2s << (turn ? PLAYER2_X2SHIFT : PLAYER1_X2SHIFT));*/
cf->playedPowerCheckers |= 1 << (turn ? PLAYER2_X2SHIFT : PLAYER1_X2SHIFT);
}
}
void ConnectFour_powerup_decrementPlayedPowerCheckers(ConnectFour *cf) {
//unsigned short anvils, bombs, walls, x2s, others;
unsigned turn = cf->plyNumber & 1u;
switch (cf->pum[cf->plyNumber].diskType) {
case DROPTYPE_ANVIL:
/*anvils = turn ? (cf->playedPowerCheckers & PLAYER2_ANVILMASK) >> PLAYER2_ANVILSHIFT : (cf->playedPowerCheckers & PLAYER1_ANVILMASK) >> PLAYER1_ANVILSHIFT;
others = turn ? cf->playedPowerCheckers & ~PLAYER2_ANVILMASK : cf->playedPowerCheckers & ~PLAYER1_ANVILMASK;
cf->playedPowerCheckers = others | (--anvils << (turn ? PLAYER2_ANVILSHIFT : PLAYER1_ANVILSHIFT));*/
cf->playedPowerCheckers ^= 1 << (turn ? PLAYER2_ANVILSHIFT : PLAYER1_ANVILSHIFT);
break;
case DROPTYPE_BOMB:
/*bombs = turn ? (cf->playedPowerCheckers & PLAYER2_BOMBMASK) >> PLAYER2_BOMBSHIFT : (cf->playedPowerCheckers & PLAYER1_BOMBMASK) >> PLAYER1_BOMBSHIFT;
others = turn ? cf->playedPowerCheckers & ~PLAYER2_BOMBMASK : cf->playedPowerCheckers & ~PLAYER1_BOMBMASK;
cf->playedPowerCheckers = others | (--bombs << (turn ? PLAYER2_BOMBSHIFT : PLAYER1_BOMBSHIFT));*/
cf->playedPowerCheckers ^= 1 << (turn ? PLAYER2_BOMBSHIFT : PLAYER1_BOMBSHIFT);
break;
case DROPTYPE_WALL:
/*walls = turn ? (cf->playedPowerCheckers & PLAYER2_WALLMASK) >> PLAYER2_WALLSHIFT : (cf->playedPowerCheckers & PLAYER1_WALLMASK) >> PLAYER1_WALLSHIFT;
others = turn ? cf->playedPowerCheckers & ~PLAYER2_WALLMASK : cf->playedPowerCheckers & ~PLAYER1_WALLMASK;
cf->playedPowerCheckers = others | (--walls << (turn ? PLAYER2_WALLSHIFT : PLAYER1_WALLSHIFT));*/
cf->playedPowerCheckers ^= 1 << (turn ? PLAYER2_WALLSHIFT : PLAYER1_WALLSHIFT);
break;
case DROPTYPE_X2:
/*x2s = turn ? (cf->playedPowerCheckers & PLAYER2_X2MASK) >> PLAYER2_X2SHIFT : (cf->playedPowerCheckers & PLAYER1_X2MASK) >> PLAYER1_X2SHIFT;
others = turn ? cf->playedPowerCheckers & ~PLAYER2_X2MASK : cf->playedPowerCheckers & ~PLAYER1_X2MASK;
cf->playedPowerCheckers = others | (--x2s << (turn ? PLAYER2_X2SHIFT : PLAYER1_X2SHIFT));*/
cf->playedPowerCheckers ^= 1 << (turn ? PLAYER2_X2SHIFT : PLAYER1_X2SHIFT);
}
}
bool ConnectFour_popten_drop(ConnectFour *cf, const int COLUMN) {
Position dropper = (Position)1ull << cf->height[COLUMN];
if (!(dropper & TOP) && cf->ptm[cf->plyNumber].size && popTenFlags != POPTEN_DROP) {
if ((cf->board[cf->plyNumber & 1u] & BOT) || popTenFlags != POPTEN_DROP) {
uint8_t lastPop = cf->ptm[cf->plyNumber].pops[cf->ptm[cf->plyNumber].size - 1u];
if (lastPop != POPTEN_PASS) {
lastPop = (lastPop - COLUMNS) & 0b111111;
if (ConnectFour_numberLegalDrops(cf) == 1u || lastPop != COLUMN) {
ConnectFour_popten_removeDisk(cf);
popTenFlags = POPTEN_DROP;
cf->board[cf->plyNumber & 1u] |= dropper;
++cf->height[COLUMN];
cf->ptm[cf->plyNumber].pops[cf->ptm[cf->plyNumber].size++] = COLUMN;
if ((cf->plyNumber + 1u) < MOVESIZE) {
cf->ptm[++cf->plyNumber].pops[cf->ptm[cf->plyNumber].size++] = popTenFlags;
return true;
}
}
}
}
}
return false;
}
void ConnectFour_popten_undrop(ConnectFour *cf) {
if (cf->ptm[--cf->plyNumber].size) {
unsigned vectorSize = cf->ptm[cf->plyNumber].size - 1ull;
const uint8_t LAST_DROP = cf->ptm[cf->plyNumber].pops[vectorSize] & 0b111111;
cf->board[cf->plyNumber & 1u] ^= (Position)1ull << --cf->height[LAST_DROP];
popTenFlags = cf->ptm[cf->plyNumber].pops[vectorSize - 1ull] & 0b11000000;
--cf->ptm[cf->plyNumber].size;
--cf->ptm[cf->plyNumber + 1u].size;
ConnectFour_popten_addDisk(cf);
}
}
bool ConnectFour_popten_pop(ConnectFour *cf, const int COLUMN) {
Position bottomDisk = (Position)COLUMN * ROWS_P1, botDiskBit = (Position)1ull << bottomDisk, falls = ALLCOLS << bottomDisk;
if ((cf->board[cf->plyNumber & 1u] & botDiskBit) && popTenFlags != POPTEN_POP_NO_CONNECTION) {
popTenFlags = POPTEN_POP_NO_CONNECTION;
if (ConnectFour_popten_connection(cf->board[cf->plyNumber & 1u]) & botDiskBit) {
popTenFlags = POPTEN_POP_CONNECTION;
}
cf->board[0] = ((cf->board[0] & (ALL ^ falls)) | ((cf->board[0] & falls) >> 1ull)) & ALL;
cf->board[1] = ((cf->board[1] & (ALL ^ falls)) | ((cf->board[1] & falls) >> 1ull)) & ALL;
--cf->height[COLUMN];
cf->ptm[cf->plyNumber].pops[cf->ptm[cf->plyNumber].size++] = (COLUMN + COLUMNS) | popTenFlags;
ConnectFour_popten_addDisk(cf);
return true;
}
return false;
}
void ConnectFour_popten_unpop(ConnectFour *cf) {
if (cf->ptm[cf->plyNumber].size) {
unsigned vectorSize = cf->ptm[cf->plyNumber].size - 1ull;
const uint8_t LAST_POP = (cf->ptm[cf->plyNumber].pops[vectorSize] - COLUMNS) & 0b111111;
Position bottomDisk = (Position)LAST_POP * ROWS_P1, falls = ALLCOLS << bottomDisk;
cf->board[0] = (cf->board[0] & (ALL ^ falls)) | (cf->board[0] & falls) << 1ull;
cf->board[1] = (cf->board[1] & (ALL ^ falls)) | (cf->board[1] & falls) << 1ull;
cf->board[cf->plyNumber & 1u] |= (Position)1ull << bottomDisk;
++cf->height[LAST_POP];
popTenFlags = cf->ptm[cf->plyNumber].pops[vectorSize - 1ull] & 0b11000000;
--cf->ptm[cf->plyNumber].size;
ConnectFour_popten_removeDisk(cf);
}
}
bool ConnectFour_popten_pass(ConnectFour *cf) {
if (!ConnectFour_popten_poppable(cf) && popTenFlags == POPTEN_DROP) {
popTenFlags = POPTEN_PASS;
cf->ptm[cf->plyNumber].pops[cf->ptm[cf->plyNumber].size++] = 'P';
if ((cf->plyNumber + 1u) < MOVESIZE) {
cf->ptm[++cf->plyNumber].pops[cf->ptm[cf->plyNumber].size++] = popTenFlags;
return true;
}
}
return false;
}
void ConnectFour_popten_unpass(ConnectFour *cf) {
--cf->ptm[cf->plyNumber].size;
if (cf->ptm[--cf->plyNumber].size) {
popTenFlags = cf->ptm[cf->plyNumber].pops[--cf->ptm[cf->plyNumber].size - 1u] & 0b11000000;
}
}