V1.19.1 - Minecraft

// CityStructure.java package com.example.minecraft.feature;

// Add roof level.setBlock(new BlockPosition(pos.getX() + buildingSize / 2, pos.getY() + 1, pos.getZ() + buildingSize / 2), Blocks.STONE_SLAB.defaultBlockState(), 2); } } To register the feature, you can use the following code: Minecraft v1.19.1

public class CityFeature { public static void generateCityFeature(Level level, BlockPosition pos) { // Generate city structure CityStructure cityStructure = new CityStructure(level, pos); cityStructure.generate(); } } // CityStructure

import java.util.Random;

public Building(Level level, BlockPosition pos, int districtIndex, int buildingIndex) { this.level = level; this.pos = pos; this.districtIndex = districtIndex; this.buildingIndex = buildingIndex; } // CityStructure.java package com.example.minecraft.feature

public District(Level level, BlockPosition pos, int index) { this.level = level; this.pos = pos; this.index = index; }