Calculate accumulated score in game state

git-svn-id: svn://sunsvr01.isp.uni-luebeck.de/swproj13/trunk@297 72836036-5685-4462-b002-a69064685172

src/jrummikub/model/GameState.java

@@ -1,13 +1,19 @@
 package jrummikub.model;
 
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
 /**
  * Class that stores information for a game of multiple rounds
  */
 public class GameState {
 	private int firstRoundFirstPlayer;
+	private List<Score> scores = new ArrayList<Score>();
 
 	/**
 	 * Gets the number of the first player of the first round
+	 * 
 	 * @return the number of the first player of the first round
 	 */
 	public int getFirstRoundFirstPlayer() {
@@ -16,9 +22,90 @@ public class GameState {
 
 	/**
 	 * Sets the number of the first player of the first round
-	 * @param firstRoundFirstPlayer the number of the first player of the first round
+	 * 
+	 * @param firstRoundFirstPlayer
+	 *          the number of the first player of the first round
 	 */
 	public void setFirstRoundFirstPlayer(int firstRoundFirstPlayer) {
 		this.firstRoundFirstPlayer = firstRoundFirstPlayer;
 	}
+
+	/**
+	 * Returns the list of players' scores in the rounds played before
+	 * 
+	 * @return the list of scores
+	 */
+	public List<Score> getScores() {
+		return scores;
+	}
+
+	private Boolean[] getWinners(Integer[] points, int[] wins) {
+		int playerCount = scores.get(0).getPoints().size();
+		int maxWins = 0, maxPoints = 0;
+		Boolean[] winners = new Boolean[playerCount];
+
+		for (int i = 0; i < playerCount; ++i) {
+			winners[i] = false;
+		}
+
+		for (int i = 0; i < playerCount; ++i) {
+			if (wins[i] > maxWins) {
+				maxWins = wins[i];
+				maxPoints = points[i];
+
+				for (int j = 0; j < i; ++j) {
+					winners[j] = false;
+				}
+
+				winners[i] = true;
+			} else if (wins[i] == maxWins) {
+				if (points[i] > maxPoints) {
+					maxWins = wins[i];
+					maxPoints = points[i];
+
+					for (int j = 0; j < i; ++j) {
+						winners[j] = false;
+					}
+
+					winners[i] = true;
+				} else if (points[i] == maxPoints) {
+					winners[i] = true;
+				}
+			}
+		}
+
+		return winners;
+	}
+
+	/**
+	 * Calculated the accumulated score over the played rounds
+	 * 
+	 * @return the accumulated score
+	 */
+	public Score getAccumulatedScore() {
+		if (scores.isEmpty()) {
+			return null;
+		}
+
+		int playerCount = scores.get(0).getPoints().size();
+		Integer[] points = new Integer[playerCount];
+		int[] wins = new int[playerCount];
+
+		for (int i = 0; i < playerCount; ++i) {
+			points[i] = 0;
+		}
+
+		for (Score roundScore : scores) {
+			for (int i = 0; i < playerCount; ++i) {
+				points[i] += roundScore.getPoints().get(i);
+				if (roundScore.getWinners().get(i)) {
+					wins[i]++;
+				}
+			}
+		}
+
+		Boolean[] winners = getWinners(points, wins);
+
+		return new Score(Arrays.asList(winners), Arrays.asList(points));
+	}
 }

test/jrummikub/model/GameStateTest.java

@@ -0,0 +1,47 @@
+package jrummikub.model;
+
+import static org.junit.Assert.*;
+
+import java.util.Arrays;
+
+import org.junit.Test;
+
+public class GameStateTest {
+	GameState gameState = new GameState();
+
+	@Test
+	public void testAccumulatedScore() {
+		Score score1 = new Score(Arrays.asList(true, false, false), Arrays.asList(
+				30, -20, -10));
+		Score score2 = new Score(Arrays.asList(true, true, false), Arrays.asList(
+				-10, -10, -50));
+		Score score3 = new Score(Arrays.asList(false, false, true), Arrays.asList(
+				-30, -20, 50));
+		Score score4 = new Score(Arrays.asList(false, true, false), Arrays.asList(
+				-20, -10, -30));
+
+		gameState.getScores().addAll(Arrays.asList(score1, score2, score3, score4));
+
+		Score accum = gameState.getAccumulatedScore();
+		assertEquals(Arrays.asList(true, false, false), accum.getWinners());
+		assertEquals(Arrays.asList(-30, -60, -40), accum.getPoints());
+	}
+
+	@Test
+	public void testAccumulatedScoreDraw() {
+		Score score1 = new Score(Arrays.asList(true, false, false), Arrays.asList(
+				10, -10, -5));
+		Score score2 = new Score(Arrays.asList(true, true, false), Arrays.asList(
+				-10, -10, -50));
+		Score score3 = new Score(Arrays.asList(false, false, true), Arrays.asList(
+				-20, -10, 30));
+		Score score4 = new Score(Arrays.asList(false, true, false), Arrays.asList(
+				-20, -10, -30));
+
+		gameState.getScores().addAll(Arrays.asList(score1, score2, score3, score4));
+
+		Score accum = gameState.getAccumulatedScore();
+		assertEquals(Arrays.asList(true, true, false), accum.getWinners());
+		assertEquals(Arrays.asList(-40, -40, -55), accum.getPoints());
+	}
+}