GameState.java

package de.fossag.hackatron;

import java.util.HashMap;

public class GameState {
    public int ownID, ownX, ownY;
    public GameEngine.Move lastMove = GameEngine.Move.Up;
    private int mapWidth, mapHeight;
    private final Integer[][] map;  //[width][height]
    private final HashMap<Integer, String> playerNames;

    public GameState(int mapWidth, int mapHeight, int ownID) {
        playerNames = new HashMap<>();
        this.ownID = ownID;
        map = new Integer[mapWidth][mapHeight];

        this.mapWidth = mapWidth;
        this.mapHeight = mapHeight;
    }

    public Integer[][] getMap() {
        return map;
    }

    public void cleanupMap(int untilPriority) {
        for (int x = 0; x < mapWidth; x++) {
            for (int y = 0; y < mapHeight; y++) {
                if (map[x][y] != null && map[x][y] <= untilPriority) map[x][y] = null;
            }
        }
    }

    public void addPos(int id, int x, int y) {
        if (x < 0 | y < 0 | x >= mapWidth || y >= mapHeight) {
            throw new UnsupportedOperationException("Position: (" + x + "," + y + ") out of bounds");
        }
        map[x][y] = id;

        if (id == ownID) return;
        addLookaheadPosRec(x, y, 1);
    }

    public void addLookaheadPosRec(int x, int y, int depth) {
        if (depth >= AlgConfig.maxDepth) return;

        for (GameEngine.Move m : GameEngine.Move.values()) {
            int[] nextPos = GameUtils.getNextPosition(getMap(), x, y, m);
            int newX = nextPos[0];
            int newY = nextPos[1];
            Integer currentCell = map[newX][newY];

            if (currentCell == null || currentCell < -1 - depth) {
                map[newX][newY] = -1 - depth;
                addLookaheadPosRec(newX, newY, depth + 1);
            }
        }
    }

    public void setPlayerInfo(int playerId, String name) {
        playerNames.put(playerId, name);
    }

    public void printMap() {
        System.out.println("------------");
        for (int y = 0; y < mapHeight; y++) {
            System.out.print("|");
            for (int x = 0; x < mapWidth; x++) {
                Integer currentPixel = map[x][y];
                if(currentPixel == null) {
                    System.out.print(" ");
                } else if(currentPixel == ownID) {
                    System.out.print("X");
                } else {
                    System.out.print((char) (map[x][y] + 64+1));
                }
            }
            System.out.println("|");
        }
        System.out.println("------------");
    }

    public void playerDies(int playerId) {
        playerNames.remove(playerId);
        for (int i = 0; i < mapWidth; i++) {
            for (int j = 0; j < mapHeight; j++) {
                Integer val = map[i][j];
                if (val != null && val == playerId) {
                    map[i][j] = null;
                }
            }
        }
    }
}