com.github.nzyuzin.candiderl.game.map.MapFactory.java Source code

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Here is the source code for com.github.nzyuzin.candiderl.game.map.MapFactory.java

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/*
 * This file is part of CandideRL.
 *
 * CandideRL is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * CandideRL is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with CandideRL.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.github.nzyuzin.candiderl.game.map;

import com.github.nzyuzin.candiderl.game.GameConfig;
import com.github.nzyuzin.candiderl.game.GameConstants;
import com.github.nzyuzin.candiderl.game.map.cells.Floor;
import com.github.nzyuzin.candiderl.game.map.cells.MapCell;
import com.github.nzyuzin.candiderl.game.map.cells.Wall;
import com.github.nzyuzin.candiderl.game.map.generator.DungeonGenerator;
import com.github.nzyuzin.candiderl.game.map.generator.EmptyMapGenerator;
import com.github.nzyuzin.candiderl.game.map.generator.RandomMapGenerator;
import com.google.common.base.Preconditions;
import com.google.common.io.LineReader;

import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;

public class MapFactory {

    private final int width;
    private final int height;

    private final EmptyMapGenerator emptyMapGenerator;
    private final DungeonGenerator dungeonGenerator;

    public MapFactory(int width, int height, EmptyMapGenerator emptyMapGenerator,
            DungeonGenerator dungeonGenerator) {
        this.width = width;
        this.height = height;
        this.emptyMapGenerator = emptyMapGenerator;
        this.dungeonGenerator = dungeonGenerator;
    }

    public static MapFactory getInstance(int mapWidth, int mapHeight) {
        return new MapFactory(mapWidth, mapHeight, new EmptyMapGenerator(), new DungeonGenerator(3, 3));
    }

    public static MapFactory getInstance() {
        return getInstance(GameConfig.MAP_WIDTH, GameConfig.MAP_HEIGHT);
    }

    public Map getMap() {
        if (GameConfig.BUILD_MAP_FROM_FILE) {
            try {
                return buildMapFrom(readMapFile());
            } catch (IOException e) {
                throw new RuntimeException("Failed to read map file", e);
            }
        } else if (GameConfig.RANDOM_MAP) {
            return buildRandomMap(0.25);
        } else {
            return buildDungeon();
        }
    }

    public Map buildEmptyMap() {
        return this.emptyMapGenerator.generate(width, height);
    }

    public Map buildRandomMap(double filledCells) {
        return new RandomMapGenerator(filledCells, emptyMapGenerator).generate(width, height);
    }

    public Map buildDungeon() {
        return this.dungeonGenerator.generate(width, height);
    }

    public static Map buildMapFrom(char[][] array) {
        MapFactory mapFactory = getInstance(array[0].length, array.length);
        Map map = mapFactory.buildEmptyMap();
        for (int i = 0; i < array.length; i++) {
            for (int j = 0; j < array[0].length; j++) {
                char c = array[i][j];
                Preconditions.checkArgument(c == '#' || c == ' ' || c == '.',
                        "Map char array can only contain '#', '.' or ' ' :: given \'" + c + "\'");
                MapCell cell = c == '#' ? Wall.getWall() : Floor.getFloor();
                map.setCell(j, array.length - 1 - i, cell);
            }
        }
        return map;
    }

    private char[][] readMapFile() throws IOException {
        File mapFile = new File(GameConstants.MAP_FILENAME);
        LineReader lineReader = new LineReader(new FileReader(mapFile));
        ArrayList<char[]> result = new ArrayList<>();
        String line;
        while ((line = lineReader.readLine()) != null) {
            if (line.length() == 0) {
                break;
            }
            result.add(line.toCharArray());
        }
        return result.toArray(new char[result.size()][]);
    }

}