Fixed index out of bounds.

Implemented CellPointer equals, hashcode.

src/model/CellPointer.java

@@ -15,4 +15,29 @@ public class CellPointer {
 	public String toString() {
 		return "(" + r + "," + c +")";
 	}
+
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+		result = prime * result + c;
+		result = prime * result + r;
+		return result;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (obj == null)
+			return false;
+		if (getClass() != obj.getClass())
+			return false;
+		CellPointer other = (CellPointer) obj;
+		if (c != other.c)
+			return false;
+		if (r != other.r)
+			return false;
+		return true;
+	}
 }

src/model/comPlayer/generator/AlphaBetaMoveGenerator.java

@@ -57,6 +57,10 @@ public class AlphaBetaMoveGenerator implements MoveGenerator {
 
 		SearchResult bestResult = new SearchResult(Move.NONE,Integer.MIN_VALUE);
 		
+		if (validMoves.size() == 0) {
+			return bestResult;
+		}
+		
 		for (Move nextMove : validMoves) {
 			Board nextBoard = new Board(board);
 
@@ -91,6 +95,10 @@ public class AlphaBetaMoveGenerator implements MoveGenerator {
 
 		SearchResult bestResult = new SearchResult(Move.NONE,Integer.MAX_VALUE);
 
+		if (validMoves.size() == 0) {
+			return bestResult;
+		}
+		
 		for (Move nextMove : validMoves) {
 			Board nextBoard = new Board(board);