FoliaFlow/src/main/java/xyz/hynse/bbsdfia/Bbsdfia.java

package xyz.hynse.bbsdfia;

import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.World;
import org.bukkit.block.Block;
import org.bukkit.block.data.BlockData;
import org.bukkit.entity.Entity;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.FallingBlock;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.EntityChangeBlockEvent;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.util.Vector;

public class Bbsdfia extends JavaPlugin implements Listener {

    // This method is called when the plugin is enabled
    @Override
    public void onEnable() {
        super.onEnable();
        // Get a reference to the world_the_end world

        // Register the plugin to listen to events
        getServer().getPluginManager().registerEvents(this, this);
        // Log that the plugin has started
        getServer().getLogger().info("Bbsdfia plugin started");
    }

    // This method is called when the plugin is disabled
    @Override
    public void onDisable() {
        super.onDisable();
        // Log that the plugin has stopped
        getServer().getLogger().info("Bbsdfia plugin stopped");
    }

    // This method is called when a falling block entity changes its block
    // Register the method as an event handler for the EntityChangeBlockEvent
    @EventHandler
    public void onFallingBlockToBlock(EntityChangeBlockEvent e) {
        // Check if the entity is a falling block
        if (e.getEntityType() == EntityType.FALLING_BLOCK) {
            // Get the entity and its location and velocity
            Entity entity = e.getEntity();
            Location loc = entity.getLocation();
            Vector vel = entity.getVelocity();
            // Get the block that the entity is moving towards
            Block movingTo = getBlockMovingTo(loc, vel);
            // If the block it's moving towards is an end portal block
            if (movingTo != null && movingTo.getType() == Material.END_PORTAL) {
                try {
                    // Spawn a new falling block entity in the end
                    World endWorld = Bukkit.getWorld("world_the_end");
                    World currentWorld = entity.getWorld();
                    Location location = new Location(endWorld, 100, 50, 0);
                    getLogger().info("Current world: " + currentWorld.getName());
                    getLogger().info("End world: " + endWorld.getName());
                    getLogger().info("New location: " + "World/" + location.getWorld() + " (X:" + location.getX() + " Y:" + location.getY() + " Z:" + location.getZ() + ")");
                    World world = endWorld;
                    Location blockLocation = location;
                    BlockData blockData = e.getBlock().getBlockData();
                    Material material = blockData.getMaterial();
                    BlockData fallingBlockData = material.createBlockData();
                    FallingBlock fallingBlock = world.spawnFallingBlock(blockLocation, fallingBlockData);
                    getLogger().info("XoaN " + "world=" + world.getName() );
                    getLogger().info("XoaN " + "blockLocation=" + blockLocation.toString());
                    getLogger().info("XoaN " + "blockData=" + blockData.getAsString());
                    getLogger().info("XoaN " + "material=" + material.name());
                    getLogger().info("XoaN " + "fallingBlockData=" + fallingBlockData.getAsString());
                    getLogger().info("XoaN " + "fallingBlock=" + fallingBlock.getUniqueId().toString());

                      /*
                    getLogger().info("XoaT " + endWorld.spawnEntity(location, EntityType.FALLING_BLOCK));
                    getLogger().info("XoaN " + endWorld.spawnFallingBlock(location, e.getBlock().getBlockData().getMaterial().createBlockData()));


                    FallingBlock fallingBlock = endWorld.spawnFallingBlock(location, e.getBlock().getBlockData().getMaterial().createBlockData());
                    FallingBlock fallingBlock = (FallingBlock) endWorld.spawnEntity(location, EntityType.FALLING_BLOCK);

                    fallingBlock.setVelocity(vel);
                    */
                } catch (Exception ex) {
                    getLogger().severe("Error spawning falling block entity: " + ex.getMessage());
                    ex.printStackTrace();
                }
            }
        }
    }



    // This function returns the block that the entity is moving towards
    Block getBlockMovingTo(Location loc, Vector vel) {
        // Initialize variables to keep track of the maximum absolute velocity and its direction
        double absMax = 0, max = 0;
        char dir = ' ';
        Block relative = null;

        // Check which component of the velocity vector has the highest magnitude
        if (Math.abs(vel.getX()) > absMax) {
            max = vel.getX();
            absMax = Math.abs(vel.getX());
            dir = 'x';
        }
        if (Math.abs(vel.getY()) > absMax) {
            max = vel.getY();
            absMax = Math.abs(vel.getY());
            dir = 'y';
        }
        if (Math.abs(vel.getZ()) > absMax) {
            max = vel.getZ();
            dir = 'z';
        }

        // Use the direction with the highest magnitude to determine the block the entity is moving towards
        switch (dir) {
            case 'x' -> relative = loc.getBlock().getRelative((int) Math.signum(max), 0, 0);
            case 'y' -> relative = loc.getBlock().getRelative(0, (int) Math.signum(max), 0);
            case 'z' -> relative = loc.getBlock().getRelative(0, 0, (int) Math.signum(max));
        }

        // Return the block the entity is moving towards
        return relative;
    }
}