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tictactoe: hard ai uses chance to win in diagonal

tictactoe
Tobias Krause 3 years ago
committed by Lorenz Hohmann
parent
commit
c0310d8ed6
  1. 20
      src/main/java/de/tims/tictactoe/ai/AIHard.java
  2. 11
      src/test/java/de/tims/tictactoe/ai/AIHardTest.java

20
src/main/java/de/tims/tictactoe/ai/AIHard.java

@ -21,6 +21,7 @@ public class AIHard implements TicTacToeAI {
public void calculateNextMove() {
int ownCharsInRow = 0;
int ownCharsInCol = 0;
int ownCharsInDiag = 0;
int charsOfOpponentInRow = 0;
int charsOfOpponentInCol = 0;
int charsOfOpponentInDiag = 0;
@ -32,14 +33,27 @@ public class AIHard implements TicTacToeAI {
charsOfOpponentInRow = countCharsInRow(i, PLAYER_CHAR);
charsOfOpponentInCol = countCharsInCol(i, PLAYER_CHAR);
if (i < 2) {
ownCharsInDiag = countCharsInDiag(i, AI_CHAR);
charsOfOpponentInDiag = countCharsInDiag(i, PLAYER_CHAR);
}
if (ownCharsInRow == BOARD_SIZE - 1 || ownCharsInCol == BOARD_SIZE - 1) {
for (int j = 0; j < BOARD_SIZE; j++) {
if (board[(ownCharsInRow == BOARD_SIZE - 1) ? i : j][(ownCharsInRow == BOARD_SIZE - 1) ? j : i] == EMPTY_CHAR) {
gl.setField((ownCharsInRow == BOARD_SIZE - 1) ? i : j, (ownCharsInRow == BOARD_SIZE - 1) ? j : i, AI_CHAR);
return;
if (ownCharsInRow == BOARD_SIZE - 1) {
if (board[i][j] == EMPTY_CHAR) {
gl.setField(i, j, AI_CHAR);
return;
}
} else if (ownCharsInCol == BOARD_SIZE - 1) {
if (board[j][i] == EMPTY_CHAR) {
gl.setField(j, i, AI_CHAR);
return;
}
} else if (ownCharsInDiag == BOARD_SIZE - 1) {
if (board[j][(i == 1) ? i : BOARD_SIZE - 1 - j] == EMPTY_CHAR) {
gl.setField(j, (i == 1) ? j : BOARD_SIZE - 1 - j, AI_CHAR);
return;
}
}
}
}

11
src/test/java/de/tims/tictactoe/ai/AIHardTest.java

@ -121,6 +121,17 @@ class AIHardTest {
verify(gl, times(1)).setField(1, 0, realChar);
}
@Test
void when2inDiagSetThird() {
char realChar = 'o';
doReturn(new char[][] { {'o', '-', 'x'}, {'-', 'o', 'x'}, {'-', '-', '-'} }).when(gl).getBoard();
TicTacToeAI ai = new AIHard(gl);
ai.calculateNextMove();
verify(gl, times(1)).setField(2, 2, realChar);
}
@ParameterizedTest
@MethodSource("testCasesForCountCharsInRow")
void countCharsInRowTest(String testName, char[][] board, int rowNum, char charToCount, int expectedResult) {

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