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326 lines
12 KiB

using System;
namespace Reversi
{
public class Board
{
public static int Black;
public static int Empty;
public static int White;
private int blackCount;
private int whiteCount;
private int emptyCount;
private int blackFrontierCount;
private int whiteFrontierCount;
private int blackSafeCount;
private int whiteSafeCount;
private System.Int32[,] squares;
private System.Boolean[,] safeDiscs;
public int BlackCount {
}
public int WhiteCount {
}
public int EmptyCount {
}
public int BlackFrontierCount {
}
public int WhiteFrontierCount {
}
public int BlackSafeCount {
}
public int WhiteSafeCount {
}
public void SetForNewGame()
{
for (int i = 0; i < 8; i = i + 1) {
for (int j = 0; j < 8; j = j + 1) {
squares.Set(i, j, IL__ldsfld(Empty));
safeDiscs.Set(i, j, 0);
}
}
squares.Set(3, 3, IL__ldsfld(White));
squares.Set(3, 4, IL__ldsfld(Black));
squares.Set(4, 3, IL__ldsfld(Black));
squares.Set(4, 4, IL__ldsfld(White));
UpdateCounts();
}
public int GetSquareContents(int row, int col)
{
return (squares.Get(row, col));
}
public void MakeMove(int color, int row, int col)
{
squares.Set(row, col, color);
for (int i = -1; i <= 1; i = i + 1) {
for (int j = -1; j <= 1; j = j + 1) {
if ((i || j) && IsOutflanking(color, row, col, i, j)) {
int k = row + i;
for (int l = col + j; squares.Get(k, l) == -color; l = l + j) {
squares.Set(k, l, color);
k = k + i;
}
}
}
}
UpdateCounts();
}
public bool HasAnyValidMove(int color)
{
for (int i = 0; i < 8; i = i + 1) {
for (int j = 0; j < 8; j = j + 1) {
if (IsValidMove(color, i, j)) {
return 1;
}
}
}
return 0;
}
public bool IsValidMove(int color, int row, int col)
{
if (!(squares.Get(row, col) == IL__ldsfld(Empty))) {
return 0;
}
for (int i = -1; i <= 1; i = i + 1) {
for (int j = -1; j <= 1; j = j + 1) {
if ((i || j) && IsOutflanking(color, row, col, i, j)) {
return 1;
}
}
}
return 0;
}
public int GetValidMoveCount(int color)
{
int i = 0;
for (int j = 0; j < 8; j = j + 1) {
for (int k = 0; k < 8; k = k + 1) {
if (IsValidMove(color, j, k)) {
i = i + 1;
}
}
}
return i;
}
private bool IsOutflanking(int color, int row, int col, int dr, int dc)
{
int i = row + dr;
for (int j = col + dc; i >= 0 && i < 8 && j >= 0 && j < 8 && squares.Get(i, j) == -color; j = j + dc) {
i = i + dr;
}
if (i < 0 || i > 7 || j < 0 || j > 7 || i - dr == row && j - dc == col || squares.Get(i, j) != color) {
return 0;
}
return 1;
}
private void UpdateCounts()
{
blackCount = 0;
whiteCount = 0;
emptyCount = 0;
blackFrontierCount = 0;
whiteFrontierCount = 0;
whiteSafeCount = 0;
blackSafeCount = 0;
for (bool V_2 = 1; V_2;) {
V_2 = 0;
for (int i = 0; i < 8; i = i + 1) {
for (int j = 0; j < 8; j = j + 1) {
if (!(squares.Get(i, j) == IL__ldsfld(Empty)) && !safeDiscs.Get(i, j) && !IsOutflankable(i, j)) {
safeDiscs.Set(i, j, 1);
V_2 = 1;
}
}
}
}
i = 0;
for (; i < 8; i = i + 1) {
j = 0;
for (; j < 8; j = j + 1) {
bool V_5 = 0;
if (!(squares.Get(i, j) == IL__ldsfld(Empty))) {
for (int k = -1; k <= 1; k = k + 1) {
for (int l = -1; l <= 1; l = l + 1) {
if ((k || l) && i + k >= 0 && i + k < 8 && j + l >= 0 && j + l < 8 && !(squares.Get((i + k), (j + l)) != IL__ldsfld(Empty))) {
V_5 = 1;
}
}
}
}
if (!(squares.Get(i, j) != IL__ldsfld(Black))) {
IL__dup(this);
object expr123 = expr122.blackCount;
int expr129 = expr123 + 1;
expr122.blackCount = expr129;
if (V_5) {
IL__dup(this);
object expr135 = expr134.blackFrontierCount;
int expr13B = expr135 + 1;
expr134.blackFrontierCount = expr13B;
}
if (safeDiscs.Get(i, j)) {
IL__dup(this);
object expr152 = expr151.blackSafeCount;
int expr158 = expr152 + 1;
expr151.blackSafeCount = expr158;
}
}
else {
if (!(squares.Get(i, j) != IL__ldsfld(White))) {
IL__dup(this);
object expr176 = expr175.whiteCount;
int expr17C = expr176 + 1;
expr175.whiteCount = expr17C;
if (V_5) {
IL__dup(this);
object expr188 = expr187.whiteFrontierCount;
int expr18E = expr188 + 1;
expr187.whiteFrontierCount = expr18E;
}
if (safeDiscs.Get(i, j)) {
IL__dup(this);
object expr1A5 = expr1A4.whiteSafeCount;
int expr1AB = expr1A5 + 1;
expr1A4.whiteSafeCount = expr1AB;
goto BasicBlock_313;
}
else {
goto BasicBlock_313;
}
}
IL__dup(this);
object expr1B5 = expr1B4.emptyCount;
int expr1BB = expr1B5 + 1;
expr1B4.emptyCount = expr1BB;
}
BasicBlock_313:
}
}
}
private bool IsOutflankable(int row, int col)
{
int i = squares.Get(row, col);
bool V_3 = 0;
bool V_5 = 0;
bool V_4 = 0;
bool V_6 = 0;
for (int k = 0; k < col && !V_3; k = k + 1) {
if (!(squares.Get(row, k) != IL__ldsfld(Empty))) {
V_3 = 1;
}
else {
if (squares.Get(row, k) != i || !safeDiscs.Get(row, k)) {
V_5 = 1;
}
}
}
k = col + 1;
for (; k < 8 && !V_4; k = k + 1) {
if (!(squares.Get(row, k) != IL__ldsfld(Empty))) {
V_4 = 1;
}
else {
if (squares.Get(row, k) != i || !safeDiscs.Get(row, k)) {
V_6 = 1;
}
}
}
if (V_3 && V_4 || V_3 && V_6 || V_5 && V_4) {
return 1;
}
V_3 = 0;
V_4 = 0;
V_5 = 0;
V_6 = 0;
for (int j = 0; j < row && !V_3; j = j + 1) {
if (!(squares.Get(j, col) != IL__ldsfld(Empty))) {
V_3 = 1;
}
else {
if (squares.Get(j, col) != i || !safeDiscs.Get(j, col)) {
V_5 = 1;
}
}
}
j = row + 1;
for (; j < 8 && !V_4; j = j + 1) {
if (!(squares.Get(j, col) != IL__ldsfld(Empty))) {
V_4 = 1;
}
else {
if (squares.Get(j, col) != i || !safeDiscs.Get(j, col)) {
V_6 = 1;
}
}
}
if (V_3 && V_4 || V_3 && V_6 || V_5 && V_4) {
return 1;
}
V_3 = 0;
V_4 = 0;
V_5 = 0;
V_6 = 0;
j = row - 1;
k = col - 1;
for (; j >= 0 && k >= 0 && !V_3; k = k - 1) {
if (!(squares.Get(j, k) != IL__ldsfld(Empty))) {
V_3 = 1;
}
else {
if (squares.Get(j, k) != i || !safeDiscs.Get(j, k)) {
V_5 = 1;
}
}
j = j - 1;
}
j = row + 1;
k = col + 1;
for (; j < 8 && k < 8 && !V_4; k = k + 1) {
if (!(squares.Get(j, k) != IL__ldsfld(Empty))) {
V_4 = 1;
}
else {
if (squares.Get(j, k) != i || !safeDiscs.Get(j, k)) {
V_6 = 1;
}
}
j = j + 1;
}
if (V_3 && V_4 || V_3 && V_6 || V_5 && V_4) {
return 1;
}
V_3 = 0;
V_4 = 0;
V_5 = 0;
V_6 = 0;
j = row - 1;
k = col + 1;
for (; j >= 0 && k < 8 && !V_3; k = k + 1) {
if (!(squares.Get(j, k) != IL__ldsfld(Empty))) {
V_3 = 1;
}
else {
if (squares.Get(j, k) != i || !safeDiscs.Get(j, k)) {
V_5 = 1;
}
}
j = j - 1;
}
j = row + 1;
k = col - 1;
for (; j < 8 && k >= 0 && !V_4; k = k - 1) {
if (!(squares.Get(j, k) != IL__ldsfld(Empty))) {
V_4 = 1;
}
else {
if (squares.Get(j, k) != i || !safeDiscs.Get(j, k)) {
V_6 = 1;
}
}
j = j + 1;
}
if (V_3 && V_4 || V_3 && V_6 || V_5 && V_4) {
return 1;
}
return 0;
}
}
}