bukkit/hoeruputils/StickyChunk.java

package dk.thoerup.bukkit.hoeruputils;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;

import org.bukkit.Chunk;
import org.bukkit.Location;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.world.ChunkUnloadEvent;

public class StickyChunk implements Listener, CommandExecutor {
        
        public class ChunkBean {
                
                public ChunkBean(Chunk c) {
                        this.world = c.getWorld().getName();
                        this.x = c.getX();
                        this.z = c.getZ();
                        
                        this.x_min = this.x - 1;
                        this.x_max = this.x + 1;
                        this.z_min = this.z - 1;
                        this.z_max = this.z + 1;                        
                }
                
                public String world;
                public int x;
                public int z;
                
                public int x_min;
                public int x_max;
                
                public int z_min;
                public int z_max;               
        }
        
                
        HashMap<String,ChunkBean> chunks = new HashMap<String,ChunkBean>();
        
        
        @Override
        public boolean onCommand(final CommandSender sender, Command command, String label, String[] args) {
                
                if ( ! (sender instanceof Player) ) {                   
                        sender.sendMessage("stickychunk is not a console command");
                        return false;
                }               
                Player p = (Player) sender;
                
                if (p.isOp()==false && p.hasPermission("hoeruputils.chunks")==false) {
                        sender.sendMessage("you don't have permission to do this");
                        return false;
                }
                
                Location l = p.getLocation();
                
                ChunkBean chunk = new ChunkBean( l.getWorld().getChunkAt( l ) );
                
                synchronized(chunks) {
                        chunks.put( p.getName(), chunk);
                }
                
                
                sender.sendMessage("chunk registeret ok");
                                
                return true;
        }


        @EventHandler
        public void chunkUnload(ChunkUnloadEvent event) {
                synchronized(chunks) {                  
                        for (ChunkBean chunk : chunks.values()) {
                                Chunk c = event.getChunk();
                                if (c.getWorld().getName().equals( chunk.world )) {
                                        int x = c.getX();
                                        int z = c.getZ();                               

                                        if (x >= chunk.x_min && x <= chunk.x_max && z>=chunk.z_min && z<=chunk.z_max) {
                                                //System.out.println("Cancelling unload " + x + " " + z);
                                                event.setCancelled(true);
                                                return; //
                                        }
                                }

                        }                               
                }
        }
        
}
1	package dk.thoerup.bukkit.hoeruputils;
2
3	import java.util.ArrayList;
4	import java.util.Collections;
5	import java.util.HashMap;
6	import java.util.List;
7
8	import org.bukkit.Chunk;
9	import org.bukkit.Location;
10	import org.bukkit.command.Command;
11	import org.bukkit.command.CommandExecutor;
12	import org.bukkit.command.CommandSender;
13	import org.bukkit.entity.Player;
14	import org.bukkit.event.EventHandler;
15	import org.bukkit.event.Listener;
16	import org.bukkit.event.world.ChunkUnloadEvent;
17
18	public class StickyChunk implements Listener, CommandExecutor {
19
20	public class ChunkBean {
21
22	public ChunkBean(Chunk c) {
23	this.world = c.getWorld().getName();
24	this.x = c.getX();
25	this.z = c.getZ();
26
27	this.x_min = this.x - 1;
28	this.x_max = this.x + 1;
29	this.z_min = this.z - 1;
30	this.z_max = this.z + 1;
31	}
32
33	public String world;
34	public int x;
35	public int z;
36
37	public int x_min;
38	public int x_max;
39
40	public int z_min;
41	public int z_max;
42	}
43
44
45	HashMap<String,ChunkBean> chunks = new HashMap<String,ChunkBean>();
46
47
48	@Override
49	public boolean onCommand(final CommandSender sender, Command command, String label, String[] args) {
50
51	if ( ! (sender instanceof Player) ) {
52	sender.sendMessage("stickychunk is not a console command");
53	return false;
54	}
55	Player p = (Player) sender;
56
57	if (p.isOp()==false && p.hasPermission("hoeruputils.chunks")==false) {
58	sender.sendMessage("you don't have permission to do this");
59	return false;
60	}
61
62	Location l = p.getLocation();
63
64	ChunkBean chunk = new ChunkBean( l.getWorld().getChunkAt( l ) );
65
66	synchronized(chunks) {
67	chunks.put( p.getName(), chunk);
68	}
69
70
71	sender.sendMessage("chunk registeret ok");
72
73	return true;
74	}
75
76
77	@EventHandler
78	public void chunkUnload(ChunkUnloadEvent event) {
79	synchronized(chunks) {
80	for (ChunkBean chunk : chunks.values()) {
81	Chunk c = event.getChunk();
82	if (c.getWorld().getName().equals( chunk.world )) {
83	int x = c.getX();
84	int z = c.getZ();
85
86	if (x >= chunk.x_min && x <= chunk.x_max && z>=chunk.z_min && z<=chunk.z_max) {
87	//System.out.println("Cancelling unload " + x + " " + z);
88	event.setCancelled(true);
89	return; //
90	}
91	}
92
93	}
94	}
95	}
96
97	}