///*
// * This file ("WorldGenLushCaves.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 de.ellpeck.actuallyadditions.mod.blocks.ActuallyBlocks;
//import de.ellpeck.actuallyadditions.mod.config.values.ConfigBoolValues;
//import de.ellpeck.actuallyadditions.mod.misc.DungeonLoot;
//import de.ellpeck.actuallyadditions.mod.tile.TileEntityGiantChest;
//import net.minecraft.block.Block;
//import net.minecraft.block.BlockDirectional;
//import net.minecraft.init.Blocks;
//import net.minecraft.tileentity.TileEntity;
//import net.minecraft.util.Direction;
//import net.minecraft.util.math.BlockPos;
//import net.minecraft.util.math.MathHelper;
//import net.minecraft.world.World;
//import net.minecraft.world.gen.feature.WorldGenAbstractTree;
//import net.minecraft.world.gen.feature.WorldGenBigTree;
//import net.minecraft.world.gen.feature.WorldGenShrub;
//import net.minecraft.world.gen.feature.WorldGenTrees;
//import net.minecraft.world.gen.structure.StructureBoundingBox;
//import net.minecraft.world.storage.loot.ILootContainer;
//
//import java.util.ArrayList;
//import java.util.Collections;
//import java.util.List;
//import java.util.Random;
//
//public class WorldGenLushCaves {
//
//    public static final Block[] CRYSTAL_CLUSTERS = new Block[]{ActuallyBlocks.blockCrystalClusterRedstone, ActuallyBlocks.blockCrystalClusterLapis, ActuallyBlocks.blockCrystalClusterDiamond, ActuallyBlocks.blockCrystalClusterCoal, ActuallyBlocks.blockCrystalClusterEmerald, ActuallyBlocks.blockCrystalClusterIron};
//
//    public boolean generate(World world, Random rand, BlockPos position, StructureBoundingBox blockRegion) {
//        this.generateCave(world, position, rand, blockRegion);
//        return true;
//    }
//
//    private void generateCave(World world, BlockPos center, Random rand, StructureBoundingBox chunkRegion) {
//        int spheres = rand.nextInt(5) + 3;
//        StructureBoundingBox spheresBox = new StructureBoundingBox(chunkRegion);
//        //the region for spheres is larger so that trees can generate in the smaller one
//        spheresBox.minX -= 7;
//        spheresBox.minZ -= 7;
//        spheresBox.maxX += 7;
//        spheresBox.maxZ += 7;
//        for (int i = 0; i <= spheres; i++) {
//            //center already is random value within population area
//            this.makeSphereWithGrassFloor(world, center.add(rand.nextInt(11) - 5, rand.nextInt(7) - 3, rand.nextInt(11) - 5), rand.nextInt(3) + 5, spheresBox, rand);
//        }
//
//        this.genTreesAndTallGrass(world, center, 11, spheres * 2, rand, chunkRegion);
//    }
//
//    private void genTreesAndTallGrass(World world, BlockPos center, int radius, int amount, Random rand, StructureBoundingBox box) {
//        List<BlockPos> possiblePoses = new ArrayList<>();
//        for (double x = -radius; x < radius; x++) {
//            for (double y = -radius; y < radius; y++) {
//                for (double z = -radius; z < radius; z++) {
//                    BlockPos pos = center.add(x, y, z);
//                    if (box.isVecInside(pos)) {
//                        if (rand.nextDouble() >= 0.5D) {
//                            if (world.getBlockState(pos).getBlock() == Blocks.GRASS) {
//                                possiblePoses.add(pos);
//                            }
//                        } else {
//                            if (ConfigBoolValues.DO_CRYSTAL_CLUSTERS.isEnabled() && rand.nextInt(20) == 0) {
//                                Direction[] values = Direction.values();
//                                Direction side = values[rand.nextInt(values.length)];
//                                BlockPos posSide = pos.offset(side);
//
//                                if (!this.checkIndestructable(world, posSide)) {
//                                    BlockState state = world.getBlockState(pos);
//                                    BlockState stateSide = world.getBlockState(posSide);
//
//                                    if (state.getBlock().isAir(state, world, pos) && stateSide.isSideSolid(world, posSide, side.getOpposite())) {
//                                        Block block = CRYSTAL_CLUSTERS[rand.nextInt(CRYSTAL_CLUSTERS.length)];
//                                        world.setBlockState(pos, block.getDefaultState().withProperty(BlockDirectional.FACING, side.getOpposite()), 2);
//                                    }
//                                }
//                            }
//                        }
//                    }
//                }
//            }
//        }
//
//        if (!possiblePoses.isEmpty()) {
//            boolean crateGenDone = false;
//
//            for (int i = 0; i <= amount; i++) {
//                Collections.shuffle(possiblePoses);
//                BlockPos pos = possiblePoses.get(0);
//                if (rand.nextBoolean()) {
//                    boolean genCrate = false;
//
//                    WorldGenAbstractTree trees;
//                    if (rand.nextBoolean()) {
//                        if (rand.nextBoolean()) {
//                            trees = new WorldGenBigTree(false);
//                        } else {
//                            trees = new WorldGenShrub(Blocks.LOG.getDefaultState(), Blocks.LEAVES.getDefaultState());
//                            genCrate = true;
//                        }
//                    } else {
//                        trees = new WorldGenTrees(false);
//                    }
//                    trees.generate(world, rand, pos.up());
//
//                    if (ConfigBoolValues.DUNGEON_LOOT.isEnabled() && !crateGenDone && genCrate) {
//                        BlockPos cratePos = pos.add(MathHelper.getInt(rand, -2, 2), MathHelper.getInt(rand, 3, 8), MathHelper.getInt(rand, -2, 2));
//
//                        BlockState state = world.getBlockState(cratePos);
//                        if (state != null && state.getBlock().isLeaves(state, world, cratePos)) {
//                            world.setBlockState(cratePos, ActuallyBlocks.blockGiantChest.getDefaultState(), 2);
//
//                            TileEntity tile = world.getTileEntity(cratePos);
//                            if (tile instanceof TileEntityGiantChest) {
//                                ((TileEntityGiantChest) tile).lootTable = DungeonLoot.LUSH_CAVES;
//                            }
//                        }
//
//                        crateGenDone = true;
//                    }
//                } else {
//                    Blocks.GRASS.grow(world, rand, pos, world.getBlockState(pos));
//                }
//            }
//        }
//    }
//
//    private void makeSphereWithGrassFloor(World world, BlockPos center, int radius, StructureBoundingBox boundingBox, Random rand) {
//        for (double x = -radius; x < radius; x++) {
//            for (double y = -radius; y < radius; y++) {
//                for (double z = -radius; z < radius; z++) {
//                    if (Math.sqrt(x * x + y * y + z * z) < radius) {
//                        BlockPos pos = center.add(x, y, z);
//                        //Note: order matters, checkIndestructable will generate chunks if order is reversed
//                        if (boundingBox.isVecInside(pos) && !this.checkIndestructable(world, pos)) {
//                            world.setBlockState(pos, Blocks.AIR.getDefaultState());
//                        }
//                    }
//                }
//            }
//        }
//
//        for (double x = -radius; x < radius; x++) {
//            for (double z = -radius; z < radius; z++) {
//                for (double y = -radius; y <= -3; y++) {
//                    BlockPos pos = center.add(x, y, z);
//                    if (boundingBox.isVecInside(pos) && !this.checkIndestructable(world, pos)) {
//                        BlockState state = world.getBlockState(pos);
//                        BlockPos posUp = pos.up();
//
//                        if (!this.checkIndestructable(world, posUp)) {
//                            BlockState stateUp = world.getBlockState(posUp);
//                            if (!state.getBlock().isAir(state, world, pos) && stateUp.getBlock().isAir(stateUp, world, posUp)) {
//                                world.setBlockState(pos, Blocks.GRASS.getDefaultState(), 2);
//                            }
//                        }
//                    }
//                }
//            }
//        }
//    }
//
//    private boolean checkIndestructable(World world, BlockPos pos) {
//        //If this isn't checked, the game crashes because it tries to destroy a chest that doesn't have any loot yet :v
//        TileEntity tile = world.getTileEntity(pos);
//        if (tile instanceof ILootContainer) {
//            return true;
//        }
//
//        BlockState state = world.getBlockState(pos);
//        if (state != null) {
//            Block block = state.getBlock();
//            //check if it's tree or grass that is generated here
//            if (block == Blocks.LOG || block == Blocks.LEAVES || block == Blocks.TALLGRASS) {
//                return true;
//            }
//            if (block != null && (block.isAir(state, world, pos) || block.getHarvestLevel(state) >= 0F)) {
//                return false;
//            }
//        }
//        return true;
//    }
//}