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This commit is contained in:
Simon Pribylski
2025-04-21 15:04:18 +02:00
parent 7bdd9fdc83
commit 8354df5add
1 changed files with 4 additions and 13 deletions
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17
app/src/main/java/chess/ai/minimax/AlphaBetaThread.java
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@@ -38,13 +38,9 @@ public class AlphaBetaThread extends Thread {
private float getEndGameEvaluation() { private float getEndGameEvaluation() {
Color currentTurn = this.simulation.getPlayerTurn(); Color currentTurn = this.simulation.getPlayerTurn();
if (currentTurn == this.color) { if (this.simulation.getBoard().isKingInCheck(currentTurn))
return HORRIBLE_MOVE; return GREAT_MOVE;
} else { return getBoardEvaluation() - PieceCost.PAWN;
if (this.simulation.getBoard().isKingInCheck(currentTurn))
return GREAT_MOVE;
return getBoardEvaluation() + PieceCost.PAWN;
}
} }
private float getBoardEvaluation() { private float getBoardEvaluation() {
@@ -57,8 +53,6 @@ public class AlphaBetaThread extends Thread {
result += pieceCost.getCost(piece) + piecePosCost.getEvaluation(piece, coordinate); result += pieceCost.getCost(piece) + piecePosCost.getEvaluation(piece, coordinate);
} }
} }
if (this.simulation.getPlayerTurn() != color)
return -result;
return result; return result;
} }
@@ -70,9 +64,6 @@ public class AlphaBetaThread extends Thread {
} }
private float negaMax(int depth, float alpha, float beta) { private float negaMax(int depth, float alpha, float beta) {
if (depth == 0)
return getBoardEvaluation();
float value = MIN_FLOAT; float value = MIN_FLOAT;
List<Move> moves = this.simulation.getAllowedMoves(); List<Move> moves = this.simulation.getAllowedMoves();
@@ -84,7 +75,7 @@ public class AlphaBetaThread extends Thread {
for (Move move : moves) { for (Move move : moves) {
this.simulation.tryMove(move); this.simulation.tryMove(move);
movesCost.add(Map.entry(move, getBoardEvaluation())); movesCost.add(Map.entry(move, -getBoardEvaluation()));
this.simulation.undoMove(); this.simulation.undoMove();
} }