Merge branch 'master' into mc/1.12

BlueMapBukkit/src/main/java/de/bluecolored/bluemap/bukkit/BukkitPlugin.java

@@ -104,7 +104,7 @@ private UUID getUUIDForWorldSync (File worldFolder) throws IOException {
 			if (worldFolder.equals(world.getWorldFolder().getCanonicalFile())) return world.getUID();
 		}
 		
-		throw new IOException("There is no world with this folder loaded: " + worldFolder.getCanonicalPath());
+		throw new IOException("There is no world with this folder loaded: " + worldFolder.getPath());
 	}
 
 	@Override

BlueMapBukkit/src/main/resources/bluemap-bukkit.conf

@@ -24,7 +24,7 @@ renderThreadCount: -2
 
 # If this is true, BlueMap might send really basic metrics reports containg only the implementation-type and the version that is being used to https://metrics.bluecolored.de/bluemap/
 # This allows me to track the basic usage of BlueMap and helps me stay motivated to further develop this tool! Please leave it on :)
-# An example report looks like this: {"implementation":"CLI","version":"%version%"}
+# An example report looks like this: {"implementation":"bukkit","version":"%version%"}
 metrics: true
 
 # The folder where bluemap saves data-files it needs during runtime or to save e.g. the render-progress to resume it later.
@@ -75,6 +75,10 @@ maps: [
 		# The path to the save-folder of the world to render
 		world: "world"
 		
+		# The position on the world where the map will be centered if you open it.
+		# This defaults to the world-spawn if you don't set it.
+		#startPos: [500, -820]
+
 		# If this is false, BlueMap tries to omit all blocks that are not visible from above-ground.
 		# More specific: Block-Faces that have a sunlight/skylight value of 0 are removed.
 		# This improves the performance of the map on slower devices by a lot, but might cause some blocks to disappear that should normally be visible.

BlueMapCLI/src/main/java/de/bluecolored/bluemap/cli/BlueMapCLI.java

@@ -24,8 +24,14 @@
  */
 package de.bluecolored.bluemap.cli;
 
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
 import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
 import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
 import java.net.URL;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -36,6 +42,8 @@
 import java.util.UUID;
 import java.util.concurrent.ForkJoinPool;
 import java.util.concurrent.TimeUnit;
+import java.util.zip.GZIPInputStream;
+import java.util.zip.GZIPOutputStream;
 
 import org.apache.commons.cli.CommandLine;
 import org.apache.commons.cli.CommandLineParser;
@@ -136,15 +144,14 @@ public void renderMaps() throws IOException {
 		webSettings.setAllEnabled(false);
 		for (MapType map : maps.values()) {
 			webSettings.setEnabled(true, map.getId());
-			webSettings.setName(map.getName(), map.getId());
 			webSettings.setFrom(map.getTileRenderer(), map.getId());
+			webSettings.setFrom(map.getWorld(), map.getId());
 		}
 		int ordinal = 0;
 		for (MapConfig map : config.getMapConfigs()) {
 			if (!maps.containsKey(map.getId())) continue; //don't add not loaded maps
 			webSettings.setOrdinal(ordinal++, map.getId());
-			webSettings.setHiresViewDistance(map.getHiresViewDistance(), map.getId());
+			webSettings.setFrom(map, map.getId());
-			webSettings.setLowresViewDistance(map.getLowresViewDistance(), map.getId());
 		}
 		webSettings.save();
 
@@ -153,11 +160,22 @@ public void renderMaps() throws IOException {
 		resourcePack.saveTextureFile(textureExportFile);
 
 		RenderManager renderManager = new RenderManager(config.getRenderThreadCount());
-		renderManager.start();
+		File rmstate = new File(configFolder, "rmstate");
 		
+		if (rmstate.exists()) {
+			try (
+				InputStream in = new GZIPInputStream(new FileInputStream(rmstate));
+				DataInputStream din = new DataInputStream(in);
+			){
+				renderManager.readState(din, maps.values());
+				Logger.global.logInfo("Found unfinished render, continuing ... (If you want to start a new render, delete the this file: " + rmstate.getCanonicalPath());
+			} catch (IOException ex) {
+				Logger.global.logError("Failed to read saved render-state! Remove the file " + rmstate.getCanonicalPath() + " to start a new render.", ex);
+			}
+		} else {
 			for (MapType map : maps.values()) {
-			Logger.global.logInfo("Rendering map '" + map.getId() + "' ...");
+				Logger.global.logInfo("Creating render-task for map '" + map.getId() + "' ...");
-			Logger.global.logInfo("Collecting tiles to render...");
+				Logger.global.logInfo("Collecting tiles ...");
 		
 				Collection<Vector2i> chunks;
 				if (!forceRender) {
@@ -178,60 +196,81 @@ public void renderMaps() throws IOException {
 					continue;
 				}
 				
-			Logger.global.logInfo("Starting Render...");
+				RenderTask task = new RenderTask(map.getName(), map);
-			long starttime = System.currentTimeMillis();
-			
-			RenderTask task = new RenderTask("Map-Render: " + map.getName(), map);
 				task.addTiles(tiles);
 				task.optimizeQueue();
 				
 				renderManager.addRenderTask(task);
+			}
+		}
 
-			long lastLogUpdate = System.currentTimeMillis();
+		Logger.global.logInfo("Starting render ...");
-			long lastSave = lastLogUpdate;
+		renderManager.start();
 		
-			while(!task.isFinished()) {
+		long startTime = System.currentTimeMillis();
+		
+		long lastLogUpdate = startTime;
+		long lastSave = startTime;
+		
+		while(renderManager.getRenderTaskCount() != 0) {
 			try {
 				Thread.sleep(200);
 			} catch (InterruptedException e) {}
 			
+
 			long now = System.currentTimeMillis();
 			
 			if (lastLogUpdate < now - 10000) { // print update all 10 seconds
+				RenderTask currentTask = renderManager.getCurrentRenderTask();
 				lastLogUpdate = now;
-					long time = task.getActiveTime();
+				long time = currentTask.getActiveTime();
 				
 				String durationString = DurationFormatUtils.formatDurationWords(time, true, true);
-					int tileCount = task.getRemainingTileCount() + task.getRenderedTileCount();
+				int tileCount = currentTask.getRemainingTileCount() + currentTask.getRenderedTileCount();
-					double pct = (double)task.getRenderedTileCount() / (double) tileCount;
+				double pct = (double)currentTask.getRenderedTileCount() / (double) tileCount;
 				
 				long ert = (long)((time / pct) * (1d - pct));
 				String ertDurationString = DurationFormatUtils.formatDurationWords(ert, true, true);
 				
-					double tps = task.getRenderedTileCount() / (time / 1000.0);
+				double tps = currentTask.getRenderedTileCount() / (time / 1000.0);
 				
-					Logger.global.logInfo("Rendered " + task.getRenderedTileCount() + " of " + tileCount + " tiles in " + durationString + " | " + GenericMath.round(tps, 3) + " tiles/s");
+				Logger.global.logInfo("Rendering map '" + currentTask.getName() + "':");
+				Logger.global.logInfo("Rendered " + currentTask.getRenderedTileCount() + " of " + tileCount + " tiles in " + durationString + " | " + GenericMath.round(tps, 3) + " tiles/s");
 				Logger.global.logInfo(GenericMath.round(pct * 100, 3) + "% | Estimated remaining time: " + ertDurationString);
 			}
 			
-				if (lastSave < now - 5 * 60000) { // save every 5 minutes
+			if (lastSave < now - 1 * 60000) { // save every minute
+				RenderTask currentTask = renderManager.getCurrentRenderTask();
+				
 				lastSave = now;
-					map.getTileRenderer().save();
+				currentTask.getMapType().getTileRenderer().save();
-				}
-			}
 
-			map.getTileRenderer().save();
+				try (
-	
+					OutputStream os = new GZIPOutputStream(new FileOutputStream(rmstate));
-			try {
+					DataOutputStream dos = new DataOutputStream(os);
-				webSettings.set(starttime, map.getId(), "last-render");
+				){
-				webSettings.save();
+					renderManager.writeState(dos);
-			} catch (IOException e) {
+				} catch (IOException ex) {
-				Logger.global.logError("Failed to update web-settings!", e);
+					Logger.global.logError("Failed to save render-state!", ex);
+				}
 			}
 		}
 
 		renderManager.stop();
 		
+		//render finished, so remove render state file
+		rmstate.delete();
+
+		for (MapType map : maps.values()) {
+			webSettings.set(startTime, map.getId(), "last-render");
+		}
+		
+		try {
+			webSettings.save();
+		} catch (IOException e) {
+			Logger.global.logError("Failed to update web-settings!", e);
+		}
+		
 		Logger.global.logInfo("Waiting for all threads to quit ...");
 		if (!ForkJoinPool.commonPool().awaitQuiescence(30, TimeUnit.SECONDS)) {
 			Logger.global.logWarning("Some save-threads are taking very long to exit (>30s), they will be ignored.");

BlueMapCLI/src/main/resources/bluemap-cli.conf

@@ -24,7 +24,7 @@ renderThreadCount: 0
 
 # If this is true, BlueMap might send really basic metrics reports containg only the implementation-type and the version that is being used to https://metrics.bluecolored.de/bluemap/
 # This allows me to track the basic usage of BlueMap and helps me stay motivated to further develop this tool! Please leave it on :)
-# An example report looks like this: {"implementation":"CLI","version":"%version%"}
+# An example report looks like this: {"implementation":"cli","version":"%version%"}
 metrics: true
 
 # The folder where bluemap saves data-files it needs during runtime
@@ -74,6 +74,10 @@ maps: [
 		# The path to the save-folder of the world to render
 		world: "world"
 		
+		# The position on the world where the map will be centered if you open it.
+		# This defaults to the world-spawn if you don't set it.
+		#startPos: [500, -820]
+
 		# If this is false, BlueMap tries to omit all blocks that are not visible from above-ground.
 		# More specific: Block-Faces that have a sunlight/skylight value of 0 are removed.
 		# This improves the performance of the map on slower devices by a lot, but might cause some blocks to disappear that should normally be visible.

BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/RenderManager.java

@@ -127,11 +127,13 @@ private void renderThread() {
 					RenderTask task = renderTasks.peek();
 					if (task != null) {
 						ticket = task.poll();
-						if (task.isFinished()) renderTasks.poll();
+						if (task.isFinished()) {
+							renderTasks.poll();
 							task.getMapType().getTileRenderer().save();
 						}
 					}
 				}
+			}
 			
 			if (ticket != null) {
 				try {
@@ -155,8 +157,18 @@ public int getQueueSize() {
 	 * Returns a copy of the deque with the render tasks in order as array
 	 */
 	public RenderTask[] getRenderTasks(){
+		synchronized (renderTasks) {
 			return renderTasks.toArray(new RenderTask[renderTasks.size()]);
 		}
+	}
+
+	public int getRenderTaskCount(){
+		return renderTasks.size();
+	}
+	
+	public RenderTask getCurrentRenderTask() {
+		return renderTasks.peek();
+	}
 	
 	public boolean isRunning() {
 		return running;

BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/plugin/Plugin.java

@@ -69,6 +69,7 @@ public class Plugin {
 	private RenderManager renderManager;
 	private BlueMapWebServer webServer;
 	
+	private Thread periodicalSaveThread;
 	private Thread metricsThread;
 	
 	private boolean loaded = false;
@@ -218,6 +219,23 @@ public synchronized void load() throws IOException, ParseResourceException {
 			Logger.global.logError("Failed to load render-manager state!", ex);
 		}
 		
+		//create periodical-save thread
+		periodicalSaveThread = new Thread(() -> {
+			try {
+				while (true) {
+					Thread.sleep(TimeUnit.MINUTES.toMillis(5));
+					try {
+						saveRenderManagerState();
+					} catch (IOException ex) {
+						Logger.global.logError("Failed to save render-manager state!", ex);
+					}
+				}
+			} catch (InterruptedException ex){
+				return;
+			}
+		});
+		periodicalSaveThread.start();
+		
 		//start map updater
 		this.updateHandler = new MapUpdateHandler();
 		serverInterface.registerListener(updateHandler);
@@ -232,15 +250,14 @@ public synchronized void load() throws IOException, ParseResourceException {
 		webSettings.setAllEnabled(false);
 		for (MapType map : maps.values()) {
 			webSettings.setEnabled(true, map.getId());
-			webSettings.setName(map.getName(), map.getId());
 			webSettings.setFrom(map.getTileRenderer(), map.getId());
+			webSettings.setFrom(map.getWorld(), map.getId());
 		}
 		int ordinal = 0;
 		for (MapConfig map : config.getMapConfigs()) {
 			if (!maps.containsKey(map.getId())) continue; //don't add not loaded maps
 			webSettings.setOrdinal(ordinal++, map.getId());
-			webSettings.setHiresViewDistance(map.getHiresViewDistance(), map.getId());
+			webSettings.setFrom(map, map.getId());
-			webSettings.setLowresViewDistance(map.getLowresViewDistance(), map.getId());
 		}
 		webSettings.save();
 		
@@ -278,6 +295,9 @@ public synchronized void unload() {
 		if (metricsThread != null) metricsThread.interrupt();
 		metricsThread = null;
 		
+		if (periodicalSaveThread != null) periodicalSaveThread.interrupt();
+		periodicalSaveThread = null;
+		
 		//stop services
 		if (renderManager != null) renderManager.stop();
 		if (webServer != null) webServer.close();
@@ -286,14 +306,7 @@ public synchronized void unload() {
 		if (updateHandler != null) updateHandler.flushTileBuffer(); //first write all buffered tiles to the render manager to save them too
 		if (renderManager != null) {
 			try {
-				File saveFile = config.getDataPath().resolve("rmstate").toFile();
+				saveRenderManagerState();
-				saveFile.getParentFile().mkdirs();
-				if (saveFile.exists()) saveFile.delete();
-				saveFile.createNewFile();
-				
-				try (DataOutputStream out = new DataOutputStream(new GZIPOutputStream(new FileOutputStream(saveFile)))) {
-					renderManager.writeState(out);
-				}
 			} catch (IOException ex) {
 				Logger.global.logError("Failed to save render-manager state!", ex);
 			}
@@ -316,6 +329,17 @@ public synchronized void unload() {
 		loaded = false;
 	}
 	
+	public void saveRenderManagerState() throws IOException {
+		File saveFile = config.getDataPath().resolve("rmstate").toFile();
+		saveFile.getParentFile().mkdirs();
+		if (saveFile.exists()) saveFile.delete();
+		saveFile.createNewFile();
+		
+		try (DataOutputStream out = new DataOutputStream(new GZIPOutputStream(new FileOutputStream(saveFile)))) {
+			renderManager.writeState(out);
+		}
+	}
+
 	public synchronized void reload() throws IOException, ParseResourceException {
 		unload();
 		load();

BlueMapCore/src/main/java/de/bluecolored/bluemap/core/config/MainConfig.java

@@ -32,6 +32,7 @@
 import java.util.ArrayList;
 import java.util.List;
 
+import com.flowpowered.math.vector.Vector2i;
 import com.flowpowered.math.vector.Vector3i;
 import com.google.common.base.Preconditions;
 
@@ -194,6 +195,8 @@ public class MapConfig implements RenderSettings {
 		private String name;
 		private String world;
 		
+		private Vector2i startPos;
+		
 		private boolean renderCaves;
 		private float ambientOcclusion;
 		private float lighting;
@@ -219,6 +222,8 @@ private MapConfig(ConfigurationNode node) throws IOException {
 			this.world = node.getNode("world").getString("");
 			if (world.isEmpty()) throw new IOException("Invalid configuration: Node maps[?].world is not defined");
 			
+			if (!node.getNode("startPos").isVirtual()) this.startPos = ConfigUtils.readVector2i(node.getNode("startPos"));
+			
 			this.renderCaves = node.getNode("renderCaves").getBoolean(false);
 			this.ambientOcclusion = node.getNode("ambientOcclusion").getFloat(0.25f);
 			this.lighting = node.getNode("lighting").getFloat(0.8f);
@@ -234,7 +239,7 @@ private MapConfig(ConfigurationNode node) throws IOException {
 			
 			this.renderEdges = node.getNode("renderEdges").getBoolean(true);
 
-			this.renderEdges = node.getNode("useCompression").getBoolean(true);
+			this.useGzip = node.getNode("useCompression").getBoolean(true);
 			
 			this.hiresTileSize = node.getNode("hires", "tileSize").getInt(32);
 			this.hiresViewDistance = node.getNode("hires", "viewDistance").getFloat(4.5f);
@@ -260,6 +265,10 @@ public String getWorldPath() {
 			return world;
 		}
 		
+		public Vector2i getStartPos() {
+			return startPos;
+		}
+
 		public boolean isRenderCaves() {
 			return renderCaves;
 		}

BlueMapCore/src/main/java/de/bluecolored/bluemap/core/render/hires/HiresModelRenderer.java

@@ -84,8 +84,7 @@ public HiresModel render(WorldTile tile, AABB region) {
 							e.addSuppressed(e2);
 							blockModel = new BlockStateModel();
 						}
-						
+						//Logger.global.noFloodDebug(block.getBlockState().getFullId() + "-hiresModelRenderer-blockmodelerr", "Failed to create BlockModel for BlockState: " + block.getBlockState() + " (" + e.toString() + ")");
-						Logger.global.noFloodDebug(block.getBlockState().getFullId() + "-hiresModelRenderer-blockmodelerr", "Failed to create BlockModel for BlockState: " + block.getBlockState() + " (" + e.toString() + ")");
 					}
 					
 					blockModel.translate(new Vector3f(x, y, z).sub(modelMin.toFloat()));

BlueMapCore/src/main/java/de/bluecolored/bluemap/core/resourcepack/BlockStateResource.java

@@ -66,7 +66,7 @@ public Collection<TransformedBlockModelResource> getModels(BlockState blockState
 		Variant allMatch = null;
 		for (Variant variant : variants) {
 			if (variant.condition.matches(blockState)) {
-				if (variant.condition instanceof All) { //only use "all" conditioned if nothing else matched
+				if (variant.condition instanceof All) { //only use "all" condition if nothing else matched
 					if (allMatch == null) allMatch = variant;
 					continue;
 				}
@@ -106,16 +106,21 @@ private Variant() {
 		}
 
 		public TransformedBlockModelResource getModel(Vector3i pos) {
+			if (models.isEmpty()) throw new IllegalStateException("A variant must have at least one model!");
+			
 			double selection = MathUtils.hashToFloat(pos, 827364) * totalWeight; // random based on position
 			for (Weighted<TransformedBlockModelResource> w : models) {
 				selection -= w.weight;
-				if (selection < 0)
+				if (selection <= 0) return w.value;
-					return w.value;
 			}
 
 			throw new RuntimeException("This line should never be reached!");
 		}
 
+		public void checkValid() throws ParseResourceException {
+			if (models.isEmpty()) throw new ParseResourceException("A variant must have at least one model!");
+		}
+		
 		public void updateTotalWeight() {
 			totalWeight = 0d;
 			for (Weighted<?> w : models) {
@@ -181,10 +186,11 @@ public BlockStateResource build(String blockstateFile) throws IOException {
 					variant.models = loadModels(transformedModelNode, blockstateFile, null);
 
 					variant.updateTotalWeight();
+					variant.checkValid();
 
 					blockState.variants.add(variant);
-				} catch (Exception ex) {
+				} catch (Throwable t) {
-					Logger.global.logWarning("Failed to parse a variant of " + blockstateFile + ": " + ex);
+					Logger.global.logWarning("Failed to parse a variant of " + blockstateFile + ": " + t);
 				}
 			}
 
@@ -199,10 +205,11 @@ public BlockStateResource build(String blockstateFile) throws IOException {
 					variant.models = loadModels(partNode.getNode("apply"), blockstateFile, null);
 
 					variant.updateTotalWeight();
+					variant.checkValid();
 
 					blockState.multipart.add(variant);
-				} catch (Exception ex) {
+				} catch (Throwable t) {
-					Logger.global.logWarning("Failed to parse a multipart-part of " + blockstateFile + ": " + ex);
+					Logger.global.logWarning("Failed to parse a multipart-part of " + blockstateFile + ": " + t);
 				}
 			}
 
@@ -364,7 +371,14 @@ private BlockStateResource buildForge(ConfigurationNode config, String blockstat
 				}
 				
 				variant.updateTotalWeight();
+
+				try {
+					variant.checkValid();
 					blockState.variants.add(variant);
+				} catch (ParseResourceException ex) {
+					Logger.global.logWarning("Failed to parse a variant (forge/property) of " + blockstateFile + ": " + ex);
+				}
+				
 			}
 			
 			//create default straight variant
@@ -390,7 +404,14 @@ private BlockStateResource buildForge(ConfigurationNode config, String blockstat
 				}
 				
 				variant.updateTotalWeight();
+
+				try {
+					variant.checkValid();
 					blockState.variants.add(variant);
+				} catch (ParseResourceException ex) {
+					Logger.global.logWarning("Failed to parse a variant (forge/straight) of " + blockstateFile + ": " + ex);
+				}
+				
 			}
 
 			return blockState;

BlueMapCore/src/main/java/de/bluecolored/bluemap/core/web/WebSettings.java

@@ -31,7 +31,9 @@
 
 import com.flowpowered.math.vector.Vector2i;
 
+import de.bluecolored.bluemap.core.config.MainConfig.MapConfig;
 import de.bluecolored.bluemap.core.render.TileRenderer;
+import de.bluecolored.bluemap.core.world.World;
 import ninja.leaping.configurate.ConfigurationNode;
 import ninja.leaping.configurate.gson.GsonConfigurationLoader;
 import ninja.leaping.configurate.loader.ConfigurationLoader;
@@ -129,12 +131,22 @@ public void setFrom(TileRenderer tileRenderer, String mapId) {
 		set(pointSize.getY() / 2, mapId, "lowres", "translate", "z");
 	}
 
-	public void setHiresViewDistance(float hiresViewDistance, String mapId) {
+	public void setFrom(World world, String mapId) {
-		set(hiresViewDistance, mapId, "hires", "viewDistance");
+		set(world.getSpawnPoint().getX(), mapId, "startPos", "x");
+		set(world.getSpawnPoint().getZ(), mapId, "startPos", "z");
 	}
 	
-	public void setLowresViewDistance(float lowresViewDistance, String mapId) {
+	public void setFrom(MapConfig mapConfig, String mapId) {
-		set(lowresViewDistance, mapId, "lowres", "viewDistance");
+		Vector2i startPos = mapConfig.getStartPos();
+		if (startPos != null) {
+			set(startPos.getX(), mapId, "startPos", "x");
+			set(startPos.getY(), mapId, "startPos", "z");
+		}
+
+		set(mapConfig.getLowresViewDistance(), mapId, "lowres", "viewDistance");
+		set(mapConfig.getHiresViewDistance(), mapId, "hires", "viewDistance");
+		
+		setName(mapConfig.getName(), mapId);
 	}
 	
 	public void setOrdinal(int ordinal, String mapId) {

BlueMapCore/src/main/webroot/js/libs/BlueMap.js

@@ -81,32 +81,17 @@ export default class BlueMap {
 		this.controls = new Controls(this.camera, this.element, this.hiresScene);
 
 		this.loadSettings().then(async () => {
-			this.controls.setTileSize(this.settings[this.map]['hires']['tileSize']);
-
-			this.lowresTileManager = new TileManager(
-				this,
-				this.settings[this.map]['lowres']['viewDistance'],
-				this.loadLowresTile,
-				this.lowresScene,
-				this.settings[this.map]['lowres']['tileSize'],
-				{x: 0, z: 0}
-			);
-
-			this.hiresTileManager = new TileManager(
-				this,
-				this.settings[this.map]['hires']['viewDistance'],
-				this.loadHiresTile,
-				this.hiresScene,
-				this.settings[this.map]['hires']['tileSize'],
-				{x: 0, z: 0}
-			);
-
 			await this.loadHiresMaterial();
 			await this.loadLowresMaterial();
 
+			this.changeMap(this.map);
+
 			this.initModules();
 			this.start();
-		}).catch(error => this.onLoadError(error.toString()));
+		}).catch(error => {
+			this.onLoadError(error.toString())
+			console.error(error);
+		});
 	}
 
 	initModules() {
@@ -119,12 +104,20 @@ export default class BlueMap {
 	}
 
 	changeMap(map) {
-		this.hiresTileManager.close();
+		if (this.hiresTileManager !== undefined) this.hiresTileManager.close();
-		this.lowresTileManager.close();
+		if (this.lowresTileManager !== undefined) this.lowresTileManager.close();
 
 		this.map = map;
+
+		let startPos = {
+			x: this.settings[this.map]["startPos"]["x"],
+			z: this.settings[this.map]["startPos"]["z"]
+		};
+
 		this.controls.setTileSize(this.settings[this.map]['hires']['tileSize']);
 		this.controls.resetPosition();
+		this.controls.targetPosition.set(startPos.x, this.controls.targetPosition.y, startPos.z);
+		this.controls.position.copy(this.controls.targetPosition);
 
 		this.lowresTileManager = new TileManager(
 			this,
@@ -132,7 +125,7 @@ export default class BlueMap {
 			this.loadLowresTile,
 			this.lowresScene,
 			this.settings[this.map]['lowres']['tileSize'],
-			{x: 0, z: 0}
+			startPos
 		);
 
 		this.hiresTileManager = new TileManager(
@@ -141,7 +134,7 @@ export default class BlueMap {
 			this.loadHiresTile,
 			this.hiresScene,
 			this.settings[this.map]['hires']['tileSize'],
-			{x: 0, z: 0}
+			startPos
 		);
 
 		this.lowresTileManager.update();
@@ -221,7 +214,10 @@ export default class BlueMap {
 				+ ':' + Math.round(this.controls.targetDistance * 100) / 100
 				+ ':' + Math.ceil(this.controls.targetAngle * 100) / 100
 				+ ':' + Math.floor(this.controls.targetPosition.y);
+		// only update hash when changed
+		if (window.location.hash !== this.locationHash) {
 			history.replaceState(undefined, undefined, this.locationHash);
+		}
 	};
 
 	render = () => {

BlueMapCore/src/main/webroot/js/libs/TileManager.js

@@ -37,7 +37,8 @@ export default class TileManager {
 		this.scene = scene;
 		this.tileSize = new Vector2(tileSize.x, tileSize.z);
 
-		this.tile = new Vector2(position.x, position.z);
+		this.tile = new Vector2(0, 0);
+		this.tile.set(position.x, position.z).divide(this.tileSize).floor();
 		this.lastTile = this.tile.clone();
 
 		this.closed = false;

BlueMapSponge/src/main/resources/bluemap-sponge.conf

@@ -70,6 +70,10 @@ maps: [
 		# The path to the save-folder of the world to render
 		world: "world"
 		
+		# The position on the world where the map will be centered if you open it.
+		# This defaults to the world-spawn if you don't set it.
+		#startPos: [500, -820]
+
 		# If this is false, BlueMap tries to omit all blocks that are not visible from above-ground.
 		# More specific: Block-Faces that have a sunlight/skylight value of 0 are removed.
 		# This improves the performance of the map on slower devices by a lot, but might cause some blocks to disappear that should normally be visible.