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Add "time-sliced" implementation of fullrender, which does one tile at

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a time using the Bukkit scheduler while using a tunable interval
between tiles (0.5 second default), and avoids player timeouts and
blooming the chunk and entity population.
This commit is contained in:
Mike Primm 2011-05-07 10:22:41 -05:00 committed by FrozenCow
parent 106f95d8b6
commit 95cc3ae869
1 changed files with 116 additions and 0 deletions
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116
src/main/java/org/dynmap/MapManager.java
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@ -10,11 +10,17 @@ import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.HashMap;
import org.bukkit.Location;
import org.bukkit.World;
import org.bukkit.entity.Entity;
import org.bukkit.scheduler.BukkitScheduler;
import org.bukkit.util.config.ConfigurationNode;
import org.dynmap.DynmapWorld;
import org.dynmap.MapTile;
import org.dynmap.debug.Debug;
import org.bukkit.Chunk;
public class MapManager {
protected static final Logger log = Logger.getLogger("Minecraft");
@ -23,6 +29,12 @@ public class MapManager {
public Map<String, DynmapWorld> worlds = new HashMap<String, DynmapWorld>();
public Map<String, DynmapWorld> inactiveworlds = new HashMap<String, DynmapWorld>();
private BukkitScheduler scheduler;
private DynmapPlugin plug_in;
private boolean do_timesliced_render = false;
private double timeslice_interval = 0.0;
/* Which timesliced renders are active */
private HashMap<String, FullWorldRenderState> active_renders = new HashMap<String, FullWorldRenderState>();
/* lock for our data structures */
public static final Object lock = new Object();
@ -50,17 +62,121 @@ public class MapManager {
if (bukkitWorld != null)
activateWorld(bukkitWorld);
}
do_timesliced_render = configuration.getBoolean("timeslicerender", false);
timeslice_interval = configuration.getDouble("timesliceinterval", 0.5);
scheduler = plugin.getServer().getScheduler();
plug_in = plugin;
tileQueue.start();
}
private class FullWorldRenderState implements Runnable {
DynmapWorld world; /* Which world are we rendering */
Location loc; /* Start location */
int map_index = -1; /* Which map are we on */
MapType map;
HashSet<MapTile> found = new HashSet<MapTile>();
HashSet<MapTile> rendered = new HashSet<MapTile>();
LinkedList<MapTile> renderQueue = new LinkedList<MapTile>();
FullWorldRenderState(DynmapWorld dworld, Location l) {
world = dworld;
loc = l;
}
public void run() {
MapTile tile;
/* If render queue is empty, start next map */
if(renderQueue.isEmpty()) {
found.clear();
rendered.clear();
map_index++; /* Next map */
if(map_index >= world.maps.size()) { /* Last one done? */
log.info("Full render finished.");
active_renders.remove(world.world.getName());
return;
}
map = world.maps.get(map_index);
/* Now, prime the render queue */
for (MapTile mt : map.getTiles(loc)) {
if (!found.contains(mt)) {
found.add(mt);
renderQueue.add(mt);
}
}
}
tile = renderQueue.pollFirst();
DynmapChunk[] requiredChunks = tile.getMap().getRequiredChunks(tile);
LinkedList<DynmapChunk> loadedChunks = new LinkedList<DynmapChunk>();
World w = world.world;
// Load the required chunks.
for (DynmapChunk chunk : requiredChunks) {
boolean wasLoaded = w.isChunkLoaded(chunk.x, chunk.z);
boolean didload = w.loadChunk(chunk.x, chunk.z, false);
if ((!wasLoaded) && didload)
loadedChunks.add(chunk);
}
if (render(tile)) {
found.remove(tile);
rendered.add(tile);
for (MapTile adjTile : map.getAdjecentTiles(tile)) {
if (!found.contains(adjTile) && !rendered.contains(adjTile)) {
found.add(adjTile);
renderQueue.add(adjTile);
}
}
}
found.remove(tile);
/* And unload what we loaded */
while (!loadedChunks.isEmpty()) {
DynmapChunk c = loadedChunks.pollFirst();
/* It looks like bukkit "leaks" entities - they don't get removed from the world-level table
* when chunks are unloaded but not saved - removing them seems to do the trick */
Chunk cc = w.getChunkAt(c.x, c.z);
if(cc != null) {
for(Entity e: cc.getEntities())
e.remove();
}
/* Since we only remember ones we loaded, and we're synchronous, no player has
* moved, so it must be safe (also prevent chunk leak, which appears to happen
* because isChunkInUse defined "in use" as being within 256 blocks of a player,
* while the actual in-use chunk area for a player where the chunks are managed
* by the MC base server is 21x21 (or about a 160 block radius) */
w.unloadChunk(c.x, c.z, false, false);
}
/* Schedule the next tile to be worked */
scheduler.scheduleSyncDelayedTask(plug_in, this, (int)(timeslice_interval*20));
}
}
void renderFullWorld(Location l) {
DynmapWorld world = worlds.get(l.getWorld().getName());
if (world == null) {
log.severe("Could not render: world '" + l.getWorld().getName() + "' not defined in configuration.");
return;
}
if(do_timesliced_render) {
String wname = l.getWorld().getName();
FullWorldRenderState rndr = active_renders.get(wname);
if(rndr != null) {
log.info("Full world render of world '" + wname + "' already active.");
return;
}
rndr = new FullWorldRenderState(world,l); /* Make new activation record */
active_renders.put(wname, rndr); /* Add to active table */
/* Schedule first tile to be worked */
scheduler.scheduleSyncDelayedTask(plug_in, rndr, (int)(timeslice_interval*20));
log.info("Full render starting on world '" + wname + "' (timesliced)...");
return;
}
World w = world.world;
log.info("Full render starting on world '" + w.getName() + "'...");
for (MapType map : world.maps) {
int requiredChunkCount = 200;