/*
* 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.core.world.generator.facetProviders;
import org.terasology.core.world.CoreBiome;
import org.terasology.core.world.generator.facets.BiomeFacet;
import org.terasology.math.Vector2i;
import org.terasology.world.generation.Border3D;
import org.terasology.world.generation.Facet;
import org.terasology.world.generation.FacetProvider;
import org.terasology.world.generation.GeneratingRegion;
import org.terasology.world.generation.Produces;
import org.terasology.world.generation.Requires;
import org.terasology.world.generation.facets.SurfaceHumidityFacet;
import org.terasology.world.generation.facets.SurfaceTemperatureFacet;
/**
* Determines the biome based on temperature and humidity
*/
@Produces(BiomeFacet.class)
@Requires({@Facet(SurfaceTemperatureFacet.class), @Facet(SurfaceHumidityFacet.class)})
public class BiomeProvider implements FacetProvider {
@Override
public void setSeed(long seed) {
}
@Override
public void process(GeneratingRegion region) {
SurfaceTemperatureFacet temperature = region.getRegionFacet(SurfaceTemperatureFacet.class);
SurfaceHumidityFacet surfaceHumidityFacet = region.getRegionFacet(SurfaceHumidityFacet.class);
Border3D border = region.getBorderForFacet(BiomeFacet.class);
BiomeFacet biomeFacet = new BiomeFacet(region.getRegion(), border);
for (Vector2i pos : biomeFacet.getRelativeRegion()) {
float temp = temperature.get(pos);
float hum = temp * surfaceHumidityFacet.get(pos);
if (temp >= 0.5f && hum < 0.3f) {
biomeFacet.set(pos, CoreBiome.DESERT);
} else if (hum >= 0.3f && hum <= 0.6f && temp >= 0.5f) {
biomeFacet.set(pos, CoreBiome.PLAINS);
} else if (temp <= 0.3f && hum > 0.5f) {
biomeFacet.set(pos, CoreBiome.SNOW);
} else if (hum >= 0.2f && hum <= 0.6f && temp < 0.5f) {
biomeFacet.set(pos, CoreBiome.MOUNTAINS);
} else {
biomeFacet.set(pos, CoreBiome.FOREST);
}
}
region.setRegionFacet(BiomeFacet.class, biomeFacet);
}
}