Java tutorial
/* * Minecraft Forge * Copyright (c) 2016-2019. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation version 2.1 * of the License. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package net.minecraftforge.common; import java.util.ArrayList; import java.util.Collection; import java.util.List; import com.google.common.collect.ImmutableList; import net.minecraft.world.biome.Biomes; import net.minecraft.util.WeightedRandom; import net.minecraft.world.biome.Biome; import net.minecraft.world.biome.provider.BiomeProvider; import javax.annotation.Nullable; public class BiomeManager { private static TrackedList<BiomeEntry>[] biomes = setupBiomes(); public static List<Biome> oceanBiomes = new ArrayList<Biome>(); static { oceanBiomes.add(Biomes.OCEAN); oceanBiomes.add(Biomes.DEEP_OCEAN); oceanBiomes.add(Biomes.FROZEN_OCEAN); } private static TrackedList<BiomeEntry>[] setupBiomes() { @SuppressWarnings("unchecked") TrackedList<BiomeEntry>[] currentBiomes = new TrackedList[BiomeType.values().length]; List<BiomeEntry> list = new ArrayList<BiomeEntry>(); list.add(new BiomeEntry(Biomes.FOREST, 10)); list.add(new BiomeEntry(Biomes.DARK_FOREST, 10)); list.add(new BiomeEntry(Biomes.MOUNTAINS, 10)); list.add(new BiomeEntry(Biomes.PLAINS, 10)); list.add(new BiomeEntry(Biomes.BIRCH_FOREST, 10)); list.add(new BiomeEntry(Biomes.SWAMP, 10)); currentBiomes[BiomeType.WARM.ordinal()] = new TrackedList<BiomeEntry>(list); list.clear(); list.add(new BiomeEntry(Biomes.FOREST, 10)); list.add(new BiomeEntry(Biomes.MOUNTAINS, 10)); list.add(new BiomeEntry(Biomes.TAIGA, 10)); list.add(new BiomeEntry(Biomes.PLAINS, 10)); currentBiomes[BiomeType.COOL.ordinal()] = new TrackedList<BiomeEntry>(list); list.clear(); list.add(new BiomeEntry(Biomes.SNOWY_TUNDRA, 30)); list.add(new BiomeEntry(Biomes.SNOWY_TAIGA, 10)); currentBiomes[BiomeType.ICY.ordinal()] = new TrackedList<BiomeEntry>(list); list.clear(); currentBiomes[BiomeType.DESERT.ordinal()] = new TrackedList<BiomeEntry>(list); return currentBiomes; } public static void addSpawnBiome(Biome biome) { if (!BiomeProvider.BIOMES_TO_SPAWN_IN.contains(biome)) { BiomeProvider.BIOMES_TO_SPAWN_IN.add(biome); } } public static void removeSpawnBiome(Biome biome) { if (BiomeProvider.BIOMES_TO_SPAWN_IN.contains(biome)) { BiomeProvider.BIOMES_TO_SPAWN_IN.remove(biome); } } public static void addBiome(BiomeType type, BiomeEntry entry) { int idx = type.ordinal(); List<BiomeEntry> list = idx > biomes.length ? null : biomes[idx]; if (list != null) list.add(entry); } public static void removeBiome(BiomeType type, BiomeEntry entry) { int idx = type.ordinal(); List<BiomeEntry> list = idx > biomes.length ? null : biomes[idx]; if (list != null && list.contains(entry)) { list.remove(entry); } } @Nullable public static ImmutableList<BiomeEntry> getBiomes(BiomeType type) { int idx = type.ordinal(); List<BiomeEntry> list = idx >= biomes.length ? null : biomes[idx]; return list != null ? ImmutableList.copyOf(list) : null; } public static boolean isTypeListModded(BiomeType type) { int idx = type.ordinal(); TrackedList<BiomeEntry> list = idx > biomes.length ? null : biomes[idx]; if (list != null) return list.isModded(); return false; } public static enum BiomeType { DESERT, WARM, COOL, ICY; public static BiomeType create(String name) { return null; } } public static class BiomeEntry extends WeightedRandom.Item { public final Biome biome; public BiomeEntry(Biome biome, int weight) { super(weight); this.biome = biome; } } private static class TrackedList<E> extends ArrayList<E> { private static final long serialVersionUID = 1L; private boolean isModded = false; public TrackedList(Collection<? extends E> c) { super(c); } @Override public E set(int index, E element) { isModded = true; return super.set(index, element); } @Override public boolean add(E e) { isModded = true; return super.add(e); } @Override public void add(int index, E element) { isModded = true; super.add(index, element); } @Override public E remove(int index) { isModded = true; return super.remove(index); } @Override public boolean remove(Object o) { isModded = true; return super.remove(o); } @Override public void clear() { isModded = true; super.clear(); } @Override public boolean addAll(Collection<? extends E> c) { isModded = true; return super.addAll(c); } @Override public boolean addAll(int index, Collection<? extends E> c) { isModded = true; return super.addAll(index, c); } @Override public boolean removeAll(Collection<?> c) { isModded = true; return super.removeAll(c); } @Override public boolean retainAll(Collection<?> c) { isModded = true; return super.retainAll(c); } public boolean isModded() { return isModded; } } }