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package jrummikub.model;
import static jrummikub.model.StoneTray.Direction.LEFT;
import static jrummikub.model.StoneTray.Direction.RIGHT;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;
import java.util.List;
import java.util.TreeMap;
import jrummikub.ai.TurnLogic;
import jrummikub.util.Pair;
/** Class managing a {@link Player}'s {@link Stone}s */
public class Hand extends StoneTray<Stone> implements IHand {
private static final long serialVersionUID = 192210056255744909L;
/**
* The width of the hand
*/
public final static int WIDTH = 14;
@Override
public int getFreeRowSpace(int row) {
int count = 0;
for (Pair<Stone, Position> entry : this) {
if (entry.getSecond().getY() == row) {
count++;
}
}
return WIDTH - count;
}
@Override
public int getRowCount() {
int rows = 0;
for (Pair<Stone, Position> entry : this) {
if (entry.getSecond().getY() > rows) {
rows = (int) entry.getSecond().getY();
}
}
return rows + 1;
}
@Override
protected Pair<Position, Direction> fixInvalidDrop(Stone stone, Position pos,
Direction dir) {
double x = pos.getX();
double y = pos.getY();
if (x >= 0 && x <= WIDTH - 1) {
return null;
}
if (x < 0) {
return new Pair<Position, Direction>(new Position(0, y), RIGHT);
} else {
if (getFreeRowSpace((int) y) == 0) {
return new Pair<Position, Direction>(new Position(0, y + 1), RIGHT);
} else {
return new Pair<Position, Direction>(new Position(WIDTH - 1, y), LEFT);
}
}
}
@Override
public int getStonePoints(GameSettings settings) {
int points = 0;
for (Pair<Stone, Position> entry : this) {
if (entry.getFirst().isJoker()) {
points += settings.getJokerPoints();
} else {
points += entry.getFirst().getValue();
}
}
return points;
}
@Override
public boolean isInitialMeldPossible(GameSettings settings) {
List<Stone> handStones = new ArrayList<Stone>();
for (Pair<Stone, Position> entry : this) {
handStones.add(entry.getFirst());
}
TurnLogic turnLogic = new TurnLogic(settings,
Collections.<Stone> emptyList(), handStones);
turnLogic.needIntialMeldThreshold();
return turnLogic.solve();
}
/**
* Increments the count of a stone in the list of all stones
*
* @param stones
* all stones and their respective numbers
* @param stone
*/
private static void incrementStoneCount(
TreeMap<Pair<Integer, StoneColor>, Integer> stones,
Pair<Integer, StoneColor> stone) {
if (stones.containsKey(stone)) {
stones.put(stone, stones.get(stone) + 1);
} else {
stones.put(stone, 1);
}
}
/**
* The measure to compare the stones by
*/
private final static Comparator<Pair<Integer, StoneColor>> comparator = new Comparator<Pair<Integer, StoneColor>>() {
@Override
public int compare(Pair<Integer, StoneColor> o1,
Pair<Integer, StoneColor> o2) {
int firstComparison = o1.getFirst().compareTo(o2.getFirst());
if (firstComparison != 0) {
return -firstComparison;
} else {
return o1.getSecond().compareTo(o2.getSecond());
}
}
};
/**
* Counts the numbers of stones
*
* @param stones
* the stones to count
* @return the numbers for all stones
*/
private static Pair<TreeMap<Pair<Integer, StoneColor>, Integer>, Integer> countStones(
List<Stone> stones) {
int jokerCount = 0;
TreeMap<Pair<Integer, StoneColor>, Integer> stoneCounts = new TreeMap<Pair<Integer, StoneColor>, Integer>(
comparator);
for (Stone stone : stones) {
if (stone.isJoker()) {
jokerCount++;
} else {
Pair<Integer, StoneColor> key = new Pair<Integer, StoneColor>(
stone.getValue(), stone.getColor());
incrementStoneCount(stoneCounts, key);
}
}
return new Pair<TreeMap<Pair<Integer, StoneColor>, Integer>, Integer>(
stoneCounts, jokerCount);
}
@Override
public int getIdenticalStoneCount() {
List<Stone> stones = new ArrayList<Stone>();
for (Iterator<Pair<Stone, Position>> iter = this.iterator(); iter.hasNext();) {
stones.add(iter.next().getFirst());
}
Pair<TreeMap<Pair<Integer, StoneColor>, Integer>, Integer> stoneCounts = countStones(stones);
int pairCount = 0;
for (int count : stoneCounts.getFirst().values()) {
pairCount += count / 2;
}
return pairCount;
}
}
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