DefaultBiomeModel.java

/*
 * Copyright 2014 MovingBlocks
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.terasology.polyworld.biome;

import org.terasology.polyworld.elevation.ElevationModel;
import org.terasology.polyworld.graph.Region;
import org.terasology.polyworld.moisture.MoistureModel;
import org.terasology.polyworld.water.WaterModel;

/**
 * TODO Type description
 */
public class DefaultBiomeModel implements BiomeModel {

    private final MoistureModel moistureModel;
    private final ElevationModel elevationModel;
    private final WaterModel waterModel;

    /**
     * @param moistureModel
     */
    public DefaultBiomeModel(ElevationModel elevationModel, WaterModel waterModel, MoistureModel moistureModel) {
        this.elevationModel = elevationModel;
        this.waterModel = waterModel;
        this.moistureModel = moistureModel;
    }

    @Override
    public WhittakerBiome getBiome(Region region) {
        float moisture = moistureModel.getMoisture(region);
        float elevation = elevationModel.getElevation(region);

        if (waterModel.isOcean(region)) {
            return WhittakerBiome.OCEAN;
        } else if (waterModel.isWater(region)) {
            if (elevation < 0.1) {
                return WhittakerBiome.MARSH;
            }
            if (elevation > 0.8) {
                return WhittakerBiome.ICE;
            }
            return WhittakerBiome.LAKE;
        } else if (waterModel.isCoast(region)) {
            return WhittakerBiome.BEACH;
        } else if (elevation > 0.8) {
            if (moisture > 0.50) {
                return WhittakerBiome.SNOW;
            } else if (moisture > 0.33) {
                return WhittakerBiome.TUNDRA;
            } else if (moisture > 0.16) {
                return WhittakerBiome.BARE;
            } else {
                return WhittakerBiome.SCORCHED;
            }
        } else if (elevation > 0.6) {
            if (moisture > 0.66) {
                return WhittakerBiome.TAIGA;
            } else if (moisture > 0.33) {
                return WhittakerBiome.SHRUBLAND;
            } else {
                return WhittakerBiome.TEMPERATE_DESERT;
            }
        } else if (elevation > 0.3) {
            if (moisture > 0.83) {
                return WhittakerBiome.TEMPERATE_RAIN_FOREST;
            } else if (moisture > 0.50) {
                return WhittakerBiome.TEMPERATE_DECIDUOUS_FOREST;
            } else if (moisture > 0.16) {
                return WhittakerBiome.GRASSLAND;
            } else {
                return WhittakerBiome.TEMPERATE_DESERT;
            }
        } else {
            if (moisture > 0.66) {
                return WhittakerBiome.TROPICAL_RAIN_FOREST;
            } else if (moisture > 0.33) {
                return WhittakerBiome.TROPICAL_SEASONAL_FOREST;
            } else if (moisture > 0.16) {
                return WhittakerBiome.GRASSLAND;
            } else {
                return WhittakerBiome.SUBTROPICAL_DESERT;
            }
        }
    }
}