/*
* 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.world.generation;
import com.google.common.collect.ListMultimap;
import com.google.common.collect.Sets;
import org.terasology.math.Region3i;
import org.terasology.utilities.collection.TypeMap;
import java.util.Map;
import java.util.Set;
/**
*/
public class RegionImpl implements Region, GeneratingRegion {
private final Region3i region;
private final ListMultimap<Class<? extends WorldFacet>, FacetProvider> facetProviderChains;
private final Map<Class<? extends WorldFacet>, Border3D> borders;
private final TypeMap<WorldFacet> generatingFacets = TypeMap.create();
private final Set<FacetProvider> processedProviders = Sets.newHashSet();
private final TypeMap<WorldFacet> generatedFacets = TypeMap.create();
public RegionImpl(Region3i region, ListMultimap<Class<? extends WorldFacet>, FacetProvider> facetProviderChains, Map<Class<? extends WorldFacet>, Border3D> borders) {
this.region = region;
this.facetProviderChains = facetProviderChains;
this.borders = borders;
}
@Override
public <T extends WorldFacet> T getFacet(Class<T> dataType) {
T facet = generatedFacets.get(dataType);
if (facet == null) {
facetProviderChains.get(dataType).stream().filter(provider -> !processedProviders.contains(provider)).forEach(provider -> {
provider.process(this);
processedProviders.add(provider);
});
facet = generatingFacets.get(dataType);
generatedFacets.put(dataType, facet);
}
return facet;
}
@Override
public Region3i getRegion() {
return region;
}
@Override
public <T extends WorldFacet> T getRegionFacet(Class<T> type) {
return generatingFacets.get(type);
}
@Override
public <T extends WorldFacet> void setRegionFacet(Class<T> type, T facet) {
generatingFacets.put(type, facet);
}
@Override
public Border3D getBorderForFacet(Class<? extends WorldFacet> type) {
if (borders.containsKey(type)) {
return borders.get(type);
} else {
return new Border3D(0, 0, 0);
}
}
}