Java tutorial
/* * This file ("OreGen.java") is part of the Actually Additions mod for Minecraft. * It is created and owned by Ellpeck and distributed * under the Actually Additions License to be found at * http://ellpeck.de/actaddlicense * View the source code at https://github.com/Ellpeck/ActuallyAdditions * * 2015-2017 Ellpeck */ package de.ellpeck.actuallyadditions.mod.gen; import java.util.ArrayList; import java.util.Random; import org.apache.commons.lang3.ArrayUtils; import de.ellpeck.actuallyadditions.mod.ActuallyAdditions; import de.ellpeck.actuallyadditions.mod.blocks.BlockMisc; import de.ellpeck.actuallyadditions.mod.blocks.BlockWildPlant; import de.ellpeck.actuallyadditions.mod.blocks.InitBlocks; import de.ellpeck.actuallyadditions.mod.blocks.metalists.TheMiscBlocks; import de.ellpeck.actuallyadditions.mod.blocks.metalists.TheWildPlants; import de.ellpeck.actuallyadditions.mod.config.values.ConfigBoolValues; import de.ellpeck.actuallyadditions.mod.config.values.ConfigIntListValues; import de.ellpeck.actuallyadditions.mod.config.values.ConfigIntValues; import de.ellpeck.actuallyadditions.mod.util.WorldUtil; import net.minecraft.block.Block; import net.minecraft.block.BlockHorizontal; import net.minecraft.block.material.Material; import net.minecraft.block.state.IBlockState; import net.minecraft.block.state.pattern.BlockMatcher; import net.minecraft.init.Blocks; import net.minecraft.util.EnumFacing; import net.minecraft.util.math.BlockPos; import net.minecraft.util.math.MathHelper; import net.minecraft.world.World; import net.minecraft.world.WorldType; import net.minecraft.world.biome.BiomeOcean; import net.minecraft.world.chunk.IChunkProvider; import net.minecraft.world.gen.IChunkGenerator; import net.minecraft.world.gen.feature.WorldGenMinable; import net.minecraft.world.gen.structure.StructureBoundingBox; import net.minecraftforge.event.terraingen.DecorateBiomeEvent; import net.minecraftforge.event.terraingen.DecorateBiomeEvent.Decorate.EventType; import net.minecraftforge.fml.common.IWorldGenerator; import net.minecraftforge.fml.common.eventhandler.Event; import net.minecraftforge.fml.common.eventhandler.SubscribeEvent; public class AAWorldGen implements IWorldGenerator { public static final int QUARTZ_MIN = 0; public static final int QUARTZ_MAX = 45; private final WorldGenLushCaves caveGen = new WorldGenLushCaves(); public AAWorldGen() { ActuallyAdditions.LOGGER.info("Registering World Generator..."); } @Override public void generate(Random random, int chunkX, int chunkZ, World world, IChunkGenerator chunkGenerator, IChunkProvider chunkProvider) { int dimension = world.provider.getDimension(); if (dimension != -1 && dimension != 1) { if (world.getWorldType() != WorldType.FLAT && canGen(world.provider.getDimension())) { this.generateDefault(world, random, chunkX, chunkZ); } } } private boolean canGen(int dimension) { boolean inList = ArrayUtils.contains(ConfigIntListValues.ORE_GEN_DIMENSION_BLACKLIST.getValue(), dimension); return (inList && ConfigBoolValues.ORE_GEN_DIM_WHITELIST.isEnabled()) || (!inList && !ConfigBoolValues.ORE_GEN_DIM_WHITELIST.isEnabled()); } private void generateDefault(World world, Random random, int x, int z) { if (ConfigBoolValues.GENERATE_QUARTZ.isEnabled()) { this.addOreSpawn( InitBlocks.blockMisc.getDefaultState().withProperty(BlockMisc.TYPE, TheMiscBlocks.ORE_QUARTZ), Blocks.STONE, world, random, x * 16, z * 16, MathHelper.getInt(random, 5, 8), 10, QUARTZ_MIN, QUARTZ_MAX); } if (ConfigBoolValues.GEN_LUSH_CAVES.isEnabled()) { int randConst = 0x969ce69d;//so that it won't generate the same numbers as other mod that does the same thing Random chunkRand = new Random(randConst ^ world.getSeed() ^ (x * 29 + z * 31)); StructureBoundingBox box = new StructureBoundingBox(x * 16 + 8, 0, z * 16 + 8, x * 16 + 8 + 15, 255, z * 16 + 8 + 15); if (chunkRand.nextInt(ConfigIntValues.LUSH_CAVE_CHANCE.getValue()) <= 0) { BlockPos randPos = world.getTopSolidOrLiquidBlock(new BlockPos( x * 16 + MathHelper.getInt(random, 6, 10), 0, z * 16 + MathHelper.getInt(random, 6, 10))); BlockPos pos = randPos.down(MathHelper.getInt(chunkRand, 15, randPos.getY() - 15)); this.caveGen.generate(world, chunkRand, pos, box); } } } public void addOreSpawn(IBlockState state, Block blockIn, World world, Random random, int blockXPos, int blockZPos, int maxVeinSize, int chancesToSpawn, int minY, int maxY) { for (int i = 0; i < chancesToSpawn; i++) { int posX = blockXPos + random.nextInt(16); int posY = minY + random.nextInt(maxY - minY); int posZ = blockZPos + random.nextInt(16); new WorldGenMinable(state, maxVeinSize, BlockMatcher.forBlock(blockIn)).generate(world, random, new BlockPos(posX, posY, posZ)); } } @SubscribeEvent public void onWorldDecoration(DecorateBiomeEvent.Decorate event) { if ((event.getResult() == Event.Result.ALLOW || event.getResult() == Event.Result.DEFAULT)) { if (event.getType() == EventType.FLOWERS) { if (!ArrayUtils.contains(ConfigIntListValues.PLANT_DIMENSION_BLACKLIST.getValue(), event.getWorld().provider.getDimension())) { this.generateRice(event); IBlockState plantDefault = InitBlocks.blockWildPlant.getDefaultState(); this.genPlantNormally(plantDefault.withProperty(BlockWildPlant.TYPE, TheWildPlants.CANOLA), ConfigIntValues.CANOLA_AMOUNT.getValue(), ConfigBoolValues.DO_CANOLA_GEN.isEnabled(), Material.GRASS, event); this.genPlantNormally(plantDefault.withProperty(BlockWildPlant.TYPE, TheWildPlants.FLAX), ConfigIntValues.FLAX_AMOUNT.getValue(), ConfigBoolValues.DO_FLAX_GEN.isEnabled(), Material.GRASS, event); this.genPlantNormally(plantDefault.withProperty(BlockWildPlant.TYPE, TheWildPlants.COFFEE), ConfigIntValues.COFFEE_AMOUNT.getValue(), ConfigBoolValues.DO_COFFEE_GEN.isEnabled(), Material.GRASS, event); this.genPlantNormally(InitBlocks.blockBlackLotus.getDefaultState(), ConfigIntValues.BLACK_LOTUS_AMOUNT.getValue(), ConfigBoolValues.DO_LOTUS_GEN.isEnabled(), Material.GRASS, event); } } if (event.getType() == EventType.LILYPAD) { //Generate Treasure Chests if (ConfigBoolValues.DO_TREASURE_CHEST_GEN.isEnabled()) { if (event.getRand().nextInt(40) == 0) { BlockPos randomPos = event.getChunkPos().getBlock(event.getRand().nextInt(16) + 8, 0, event.getRand().nextInt(16) + 8); randomPos = event.getWorld().getTopSolidOrLiquidBlock(randomPos); if (event.getWorld().getBiome(randomPos) instanceof BiomeOcean) { if (randomPos.getY() >= 25 && randomPos.getY() <= 45) { if (event.getWorld().getBlockState(randomPos).getMaterial() == Material.WATER) { if (event.getWorld().getBlockState(randomPos.down()).getMaterial().isSolid()) { event.getWorld().setBlockState(randomPos, InitBlocks.blockTreasureChest.getDefaultState().withProperty( BlockHorizontal.FACING, EnumFacing.byHorizontalIndex(event.getRand().nextInt(4))), 2); } } } } } } } } } private void generateRice(DecorateBiomeEvent event) { if (ConfigBoolValues.DO_RICE_GEN.isEnabled()) { for (int i = 0; i < ConfigIntValues.RICE_AMOUNT.getValue(); i++) { if (event.getRand().nextInt(3) == 0) { BlockPos randomPos = event.getChunkPos().getBlock(event.getRand().nextInt(16) + 8, 0, event.getRand().nextInt(16) + 8); randomPos = event.getWorld().getTopSolidOrLiquidBlock(randomPos); if (event.getWorld().getBlockState(randomPos).getMaterial() == Material.WATER) { ArrayList<Material> blocksAroundBottom = WorldUtil.getMaterialsAround(event.getWorld(), randomPos); BlockPos posToGenAt = randomPos.up(); ArrayList<Material> blocksAroundTop = WorldUtil.getMaterialsAround(event.getWorld(), posToGenAt); if (blocksAroundBottom.contains(Material.GRASS) || blocksAroundBottom.contains(Material.GROUND) || blocksAroundBottom.contains(Material.ROCK) || blocksAroundBottom.contains(Material.SAND)) { if (!blocksAroundTop.contains(Material.WATER) && event.getWorld().getBlockState(posToGenAt).getMaterial() == Material.AIR) { event.getWorld().setBlockState(posToGenAt, InitBlocks.blockWildPlant .getDefaultState().withProperty(BlockWildPlant.TYPE, TheWildPlants.RICE), 2); } } } } } } } private void genPlantNormally(IBlockState plant, int amount, boolean doIt, Material blockBelow, DecorateBiomeEvent event) { if (doIt) { for (int i = 0; i < amount; i++) { if (event.getRand().nextInt(100) == 0) { BlockPos randomPos = event.getChunkPos().getBlock(event.getRand().nextInt(16) + 8, 0, event.getRand().nextInt(16) + 8); randomPos = event.getWorld().getTopSolidOrLiquidBlock(randomPos); if (event.getWorld().getBlockState(randomPos.down()).getMaterial() == blockBelow) { if (plant.getBlock().canPlaceBlockAt(event.getWorld(), randomPos) && event.getWorld().isAirBlock(randomPos)) { event.getWorld().setBlockState(randomPos, plant, 2); } } } } } } }