paper-mc/src/main/java/net/minecraft/server/WorldGenVillagePiece.java

package net.minecraft.server;

import java.util.List;
import java.util.Random;

abstract class WorldGenVillagePiece extends StructurePiece {

    protected int k = -1;
    private int a;
    private boolean b;

    public WorldGenVillagePiece() {}

    protected WorldGenVillagePiece(WorldGenVillageStartPiece worldgenvillagestartpiece, int i) {
        super(i);
        if (worldgenvillagestartpiece != null) {
            this.b = worldgenvillagestartpiece.b;
        }
    }

    protected void a(NBTTagCompound nbttagcompound) {
        nbttagcompound.setInt("HPos", this.k);
        nbttagcompound.setInt("VCount", this.a);
        nbttagcompound.setBoolean("Desert", this.b);
    }

    protected void b(NBTTagCompound nbttagcompound) {
        this.k = nbttagcompound.getInt("HPos");
        this.a = nbttagcompound.getInt("VCount");
        this.b = nbttagcompound.getBoolean("Desert");
    }

    protected StructurePiece a(WorldGenVillageStartPiece worldgenvillagestartpiece, List list, Random random, int i, int j) {
        switch (this.g) {
            case 0:
                return WorldGenVillagePieces.a(worldgenvillagestartpiece, list, random, this.f.a - 1, this.f.b + i, this.f.c + j, 1, this.d());

            case 1:
                return WorldGenVillagePieces.a(worldgenvillagestartpiece, list, random, this.f.a + j, this.f.b + i, this.f.c - 1, 2, this.d());

            case 2:
                return WorldGenVillagePieces.a(worldgenvillagestartpiece, list, random, this.f.a - 1, this.f.b + i, this.f.c + j, 1, this.d());

            case 3:
                return WorldGenVillagePieces.a(worldgenvillagestartpiece, list, random, this.f.a + j, this.f.b + i, this.f.c - 1, 2, this.d());

            default:
                return null;
        }
    }

    protected StructurePiece b(WorldGenVillageStartPiece worldgenvillagestartpiece, List list, Random random, int i, int j) {
        switch (this.g) {
            case 0:
                return WorldGenVillagePieces.a(worldgenvillagestartpiece, list, random, this.f.d + 1, this.f.b + i, this.f.c + j, 3, this.d());

            case 1:
                return WorldGenVillagePieces.a(worldgenvillagestartpiece, list, random, this.f.a + j, this.f.b + i, this.f.f + 1, 0, this.d());

            case 2:
                return WorldGenVillagePieces.a(worldgenvillagestartpiece, list, random, this.f.d + 1, this.f.b + i, this.f.c + j, 3, this.d());

            case 3:
                return WorldGenVillagePieces.a(worldgenvillagestartpiece, list, random, this.f.a + j, this.f.b + i, this.f.f + 1, 0, this.d());

            default:
                return null;
        }
    }

    protected int b(World world, StructureBoundingBox structureboundingbox) {
        int i = 0;
        int j = 0;

        for (int k = this.f.c; k <= this.f.f; ++k) {
            for (int l = this.f.a; l <= this.f.d; ++l) {
                if (structureboundingbox.b(l, 64, k)) {
                    i += Math.max(world.i(l, k), world.worldProvider.getSeaLevel());
                    ++j;
                }
            }
        }

        if (j == 0) {
            return -1;
        } else {
            return i / j;
        }
    }

    protected static boolean a(StructureBoundingBox structureboundingbox) {
        return structureboundingbox != null && structureboundingbox.b > 10;
    }

    protected void a(World world, StructureBoundingBox structureboundingbox, int i, int j, int k, int l) {
        if (this.a < l) {
            for (int i1 = this.a; i1 < l; ++i1) {
                int j1 = this.a(i + i1, k);
                int k1 = this.a(j);
                int l1 = this.b(i + i1, k);

                if (!structureboundingbox.b(j1, k1, l1)) {
                    break;
                }

                ++this.a;
                EntityVillager entityvillager = new EntityVillager(world, this.b(i1));

                entityvillager.setPositionRotation((double) j1 + 0.5D, (double) k1, (double) l1 + 0.5D, 0.0F, 0.0F);
                world.addEntity(entityvillager);
            }
        }
    }

    protected int b(int i) {
        return 0;
    }

    protected Block b(Block block, int i) {
        if (this.b) {
            if (block == Blocks.LOG || block == Blocks.LOG2) {
                return Blocks.SANDSTONE;
            }

            if (block == Blocks.COBBLESTONE) {
                return Blocks.SANDSTONE;
            }

            if (block == Blocks.WOOD) {
                return Blocks.SANDSTONE;
            }

            if (block == Blocks.WOOD_STAIRS) {
                return Blocks.SANDSTONE_STAIRS;
            }

            if (block == Blocks.COBBLESTONE_STAIRS) {
                return Blocks.SANDSTONE_STAIRS;
            }

            if (block == Blocks.GRAVEL) {
                return Blocks.SANDSTONE;
            }
        }

        return block;
    }

    protected int c(Block block, int i) {
        if (this.b) {
            if (block == Blocks.LOG || block == Blocks.LOG2) {
                return 0;
            }

            if (block == Blocks.COBBLESTONE) {
                return 0;
            }

            if (block == Blocks.WOOD) {
                return 2;
            }
        }

        return i;
    }

    protected void a(World world, Block block, int i, int j, int k, int l, StructureBoundingBox structureboundingbox) {
        Block block1 = this.b(block, i);
        int i1 = this.c(block, i);

        super.a(world, block1, i1, j, k, l, structureboundingbox);
    }

    protected void a(World world, StructureBoundingBox structureboundingbox, int i, int j, int k, int l, int i1, int j1, Block block, Block block1, boolean flag) {
        Block block2 = this.b(block, 0);
        int k1 = this.c(block, 0);
        Block block3 = this.b(block1, 0);
        int l1 = this.c(block1, 0);

        super.a(world, structureboundingbox, i, j, k, l, i1, j1, block2, k1, block3, l1, flag);
    }

    protected void b(World world, Block block, int i, int j, int k, int l, StructureBoundingBox structureboundingbox) {
        Block block1 = this.b(block, i);
        int i1 = this.c(block, i);

        super.b(world, block1, i1, j, k, l, structureboundingbox);
    }
}