Implement playermarkers on the web-app

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

@@ -35,7 +35,6 @@
 import de.bluecolored.bluemap.common.MapType;
 import de.bluecolored.bluemap.common.RenderManager;
 import de.bluecolored.bluemap.common.plugin.serverinterface.ServerEventListener;
-import de.bluecolored.bluemap.common.plugin.text.Text;
 
 public class MapUpdateHandler implements ServerEventListener {
 
@@ -136,19 +135,4 @@ public void flushTileBuffer() {
 		}
 	}
 	
-	@Override
-	public void onPlayerJoin(UUID playerUuid) {
-		
-	}
-
-	@Override
-	public void onPlayerLeave(UUID playerUuid) {
-		
-	}
-
-	@Override
-	public void onChatMessage(Text message) {
-		
-	}
-	
 }

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

@@ -51,6 +51,7 @@
 import de.bluecolored.bluemap.common.RenderManager;
 import de.bluecolored.bluemap.common.api.BlueMapAPIImpl;
 import de.bluecolored.bluemap.common.plugin.serverinterface.ServerInterface;
+import de.bluecolored.bluemap.common.plugin.skins.PlayerSkinUpdater;
 import de.bluecolored.bluemap.core.config.ConfigManager;
 import de.bluecolored.bluemap.core.config.MainConfig;
 import de.bluecolored.bluemap.core.config.MainConfig.MapConfig;
@@ -86,6 +87,7 @@ public class Plugin {
 	private Map<String, MapType> maps;
 	
 	private MapUpdateHandler updateHandler;
+	private PlayerSkinUpdater skinUpdater;
 
 	private RenderManager renderManager;
 	private BlueMapWebServer webServer;
@@ -269,6 +271,10 @@ public synchronized void load() throws IOException, ParseResourceException {
 		this.updateHandler = new MapUpdateHandler(this);
 		serverInterface.registerListener(updateHandler);
 		
+		//start skin updater
+		this.skinUpdater = new PlayerSkinUpdater(config.getWebRoot().resolve("assets").resolve("playerheads").toFile());
+		serverInterface.registerListener(skinUpdater);
+		
 		//create/update webfiles
 		WebFilesManager webFilesManager = new WebFilesManager(config.getWebRoot());
 		if (webFilesManager.needsUpdate()) {

BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/plugin/serverinterface/ServerEventListener.java

@@ -33,16 +33,16 @@
 
 public interface ServerEventListener {
 
-	void onWorldSaveToDisk(UUID world);
+	default void onWorldSaveToDisk(UUID world) {};
 	
-	void onBlockChange(UUID world, Vector3i blockPos);
+	default void onBlockChange(UUID world, Vector3i blockPos) {};
 	
-	void onChunkFinishedGeneration(UUID world, Vector2i chunkPos);
+	default void onChunkFinishedGeneration(UUID world, Vector2i chunkPos) {};
 	
-	void onPlayerJoin(UUID playerUuid);
+	default void onPlayerJoin(UUID playerUuid) {};
 	
-	void onPlayerLeave(UUID playerUuid);
+	default void onPlayerLeave(UUID playerUuid) {};
 	
-	void onChatMessage(Text message);
+	default void onChatMessage(Text message) {};
 	
 }

BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/plugin/skins/PlayerSkin.java

@@ -0,0 +1,152 @@
+/*
+ * This file is part of BlueMap, licensed under the MIT License (MIT).
+ *
+ * Copyright (c) Blue (Lukas Rieger) <https://bluecolored.de>
+ * Copyright (c) contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package de.bluecolored.bluemap.common.plugin.skins;
+
+import java.awt.Graphics2D;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.net.URL;
+import java.util.Base64;
+import java.util.UUID;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+
+import javax.imageio.ImageIO;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParser;
+
+import de.bluecolored.bluemap.core.logger.Logger;
+
+public class PlayerSkin {
+	
+	private final UUID uuid;
+	private long lastUpdate;
+
+	public PlayerSkin(UUID uuid) {
+		this.uuid = uuid;
+		this.lastUpdate = -1;
+	}
+	
+	public void update(File storageFolder) {
+		long now = System.currentTimeMillis();
+		if (lastUpdate > 0 && lastUpdate + 600000 > now) return; // only update if skin is older than 10 minutes
+		
+		lastUpdate = now;
+		
+		new Thread(() -> {
+			try {
+				Future<BufferedImage> futureSkin = loadSkin();
+				BufferedImage skin = futureSkin.get(10, TimeUnit.SECONDS);
+				BufferedImage head = createHead(skin);
+				ImageIO.write(head, "png", new File(storageFolder, uuid.toString() + ".png"));
+			} catch (ExecutionException | TimeoutException e) {
+				Logger.global.logWarning("Failed to load player-skin from mojang-servers: " + e);
+			} catch (IOException e) {
+				Logger.global.logError("Failed to write player-head image!", e);
+			} catch (InterruptedException ignore) {}
+		}).start();
+	}
+	
+	public BufferedImage createHead(BufferedImage skinTexture) {
+		BufferedImage head = new BufferedImage(8,  8, skinTexture.getType());
+		
+		BufferedImage layer1 = skinTexture.getSubimage(8, 8, 8, 8);
+		BufferedImage layer2 = skinTexture.getSubimage(40, 8, 8, 8);
+		
+		try {
+			Graphics2D g = head.createGraphics();
+			g.drawImage(layer1, 0, 0, null);
+			g.drawImage(layer2, 0, 0, null);
+		} catch (Throwable t) { // There might be problems with headless servers when loading the graphics class
+			Logger.global.noFloodWarning("headless-graphics-fail", 
+					"Could not access Graphics2D to render player-skin texture. Try adding '-Djava.awt.headless=true' to your startup flags or ignore this warning.");
+			
+			layer1.copyData(head.getRaster());
+		}
+		
+		return head;
+	}
+	
+	public Future<BufferedImage> loadSkin() {
+		CompletableFuture<BufferedImage> image = new CompletableFuture<>();
+		
+		new Thread(() -> {
+			try {
+				JsonParser parser = new JsonParser();
+				try (Reader reader = requestProfileJson()) {
+					String textureInfoJson = readTextureInfoJson(parser.parse(reader));
+					String textureUrl = readTextureUrl(parser.parse(textureInfoJson));
+					image.complete(ImageIO.read(new URL(textureUrl)));
+				}
+			} catch (IOException e) {
+				image.completeExceptionally(e);
+			}
+		}).start();
+		
+		return image;
+	}
+	
+	private Reader requestProfileJson() throws IOException {
+		URL url = new URL("https://sessionserver.mojang.com/session/minecraft/profile/" + this.uuid);
+		return new InputStreamReader(url.openStream());
+	}
+	
+	private String readTextureInfoJson(JsonElement json) throws IOException {
+		try {
+			JsonArray properties = json.getAsJsonObject().getAsJsonArray("properties");
+			
+			for (JsonElement element : properties) {
+				if (element.getAsJsonObject().get("name").getAsString().equals("textures")) {
+					return new String(Base64.getDecoder().decode(element.getAsJsonObject().get("value").getAsString().getBytes()));
+				}
+			}
+			
+			throw new IOException("No texture info found!");
+		} catch (IllegalStateException | ClassCastException e) {
+			throw new IOException(e);
+		}
+		
+	}
+	
+	private String readTextureUrl(JsonElement json) throws IOException {
+		try {
+			return json.getAsJsonObject()
+					.getAsJsonObject("textures")
+					.getAsJsonObject("SKIN")
+					.get("url").getAsString();
+		} catch (IllegalStateException | ClassCastException e) {
+			throw new IOException(e);
+		}
+	}
+	
+}

BlueMapCommon/src/main/java/de/bluecolored/bluemap/common/plugin/skins/PlayerSkinUpdater.java

@@ -0,0 +1,63 @@
+/*
+ * This file is part of BlueMap, licensed under the MIT License (MIT).
+ *
+ * Copyright (c) Blue (Lukas Rieger) <https://bluecolored.de>
+ * Copyright (c) contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package de.bluecolored.bluemap.common.plugin.skins;
+
+import java.io.File;
+import java.util.Map;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
+
+import de.bluecolored.bluemap.common.plugin.serverinterface.ServerEventListener;
+
+public class PlayerSkinUpdater implements ServerEventListener {
+
+	private File storageFolder;
+	
+	private Map<UUID, PlayerSkin> skins;
+	
+	public PlayerSkinUpdater(File storageFolder) {
+		this.storageFolder = storageFolder;
+		this.skins = new ConcurrentHashMap<>();
+		
+		this.storageFolder.mkdirs();
+	}
+	
+	public void updateSkin(UUID playerUuid) {
+		PlayerSkin skin = skins.get(playerUuid);
+		
+		if (skin == null) {
+			skin = new PlayerSkin(playerUuid);
+			skins.put(playerUuid, skin);
+		}
+		
+		skin.update(storageFolder);
+	}
+	
+	@Override
+	public void onPlayerJoin(UUID playerUuid) {
+		updateSkin(playerUuid);
+	}
+	
+}

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

@@ -198,9 +198,7 @@ public synchronized Texture loadTexture(FileAccess fileAccess, String path) thro
 			
 			//crop off animation frames
 			if (image.getHeight() > image.getWidth()){
-				BufferedImage cropped = new BufferedImage(image.getWidth(), image.getWidth(), image.getType());
+				image = image.getSubimage(0, 0, image.getWidth(), image.getWidth());
-				image.copyData(cropped.getRaster());
-				image = cropped;
 			}
 			
 			//check halfTransparency

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

@@ -60,9 +60,10 @@ import { stringToImage, pathFromCoords } from './utils.js';
 import {cachePreventionNr, getCookie, setCookie} from "./utils";
 
 export default class BlueMap {
-	constructor(element, dataRoot) {
+	constructor(element, dataRoot = "data/", liveApiRoot = "live/") {
 		this.element = $('<div class="bluemap-container"></div>').appendTo(element)[0];
 		this.dataRoot = dataRoot;
+		this.liveApiRoot = liveApiRoot;
 		this.locationHash = '';
 		this.cacheSuffix = '';
 

BlueMapCore/src/main/webroot/js/libs/hud/MarkerManager.js

@@ -3,6 +3,7 @@ import $ from "jquery";
 import ToggleButton from "../ui/ToggleButton";
 import Label from "../ui/Label";
 import {cachePreventionNr} from "../utils";
+import PlayerMarkerSet from "./PlayerMarkerSet";
 
 export default class MarkerManager {
 
@@ -10,14 +11,23 @@ export default class MarkerManager {
 		this.blueMap = blueMap;
 		this.ui = ui;
 
+		this.markerData = null;
+		this.liveData = null;
 		this.markerSets = [];
 
+		this.playerMarkerSet = null;
+
 		this.readyPromise =
+			Promise.all([
 					this.loadMarkerData()
 						.catch(ignore => {
 							if (this.blueMap.debugInfo) console.debug("Failed load markers:", ignore);
-				})
+						}),
-				.then(this.loadMarkers);
+					this.checkLiveAPI()
+						.then(this.initializePlayerMarkers)
+				])
+				.then(this.loadMarkers)
+				.then(this.updatePlayerMarkerLoop);
 
 		$(document).on('bluemap-map-change', this.onBlueMapMapChange);
 	}
@@ -41,6 +51,25 @@ export default class MarkerManager {
 		});
 	}
 
+	checkLiveAPI() {
+		return new Promise((resolve, reject) => {
+			this.blueMap.fileLoader.load(this.blueMap.liveApiRoot + 'players?' + cachePreventionNr(),
+				liveData => {
+					try {
+						this.liveData = JSON.parse(liveData);
+						resolve();
+					} catch (e){
+						reject(e);
+					}
+				},
+				xhr => {},
+				error => {
+					reject();
+				}
+			);
+		});
+	}
+
 	loadMarkers = () => {
 		if (this.markerData && this.markerData.markerSets) {
 			this.markerData.markerSets.forEach(setData => {
@@ -49,12 +78,27 @@ export default class MarkerManager {
 		}
 	};
 
+	initializePlayerMarkers = () => {
+		if (this.liveData){
+			this.playerMarkerSet = new PlayerMarkerSet(this.blueMap);
+			this.markerSets.push(this.playerMarkerSet);
+		}
+	};
+
 	update(){
 		this.markerSets.forEach(markerSet => {
 			markerSet.update();
 		});
 	}
 
+	updatePlayerMarkerLoop = () => {
+		if (this.playerMarkerSet){
+			this.playerMarkerSet.updateLive();
+		}
+
+		setTimeout(this.updatePlayerMarkerLoop, 2000);
+	};
+
 	addMenuElements(menu){
 		let addedLabel = false;
 		this.markerSets.forEach(markerSet => {

BlueMapCore/src/main/webroot/js/libs/hud/POIMarker.js

@@ -1,7 +1,6 @@
 import $ from 'jquery';
 import Marker from "./Marker";
 import {CSS2DObject} from "./CSS2DRenderer";
-import {Vector3} from "three";
 
 import POI from "../../../assets/poi.svg";
 

BlueMapCore/src/main/webroot/js/libs/hud/PlayerMarker.js

@@ -0,0 +1,90 @@
+import $ from 'jquery';
+import Marker from "./Marker";
+import {CSS2DObject} from "./CSS2DRenderer";
+
+export default class PlayerMarker extends Marker {
+
+	constructor(blueMap, markerSet, markerData, playerUuid, worldUuid) {
+		super(blueMap, markerSet, markerData);
+
+		this.online = false;
+		this.player = playerUuid;
+		this.world = worldUuid;
+
+		this.animationRunning = false;
+		this.lastFrame = -1;
+	}
+
+	setVisible(visible){
+		this.visible = visible && this.online && this.world === this.blueMap.settings.maps[this.blueMap.map].world;
+
+		this.blueMap.updateFrame = true;
+
+		if (!this.renderObject){
+			let iconElement = $(`<div class="marker-player"><img src="assets/playerheads/${this.player}.png" onerror="this.onerror=null;this.src='assets/playerheads/steve.png';"><div class="nameplate">${this.label}</div></div>`);
+			iconElement.find("img").click(this.onClick);
+
+			this.renderObject = new CSS2DObject(iconElement[0]);
+			this.renderObject.position.copy(this.position);
+			this.renderObject.onBeforeRender = (renderer, scene, camera) => {
+				let distanceSquared = this.position.distanceToSquared(camera.position);
+				if (distanceSquared > 1000000) {
+					iconElement.addClass("distant");
+				} else {
+					iconElement.removeClass("distant");
+				}
+
+				this.updateRenderObject(this.renderObject, scene, camera);
+			};
+		}
+
+		if (this.visible) {
+			this.blueMap.hudScene.add(this.renderObject);
+		} else {
+			this.blueMap.hudScene.remove(this.renderObject);
+		}
+	}
+
+	updatePosition = () => {
+		if (this.renderObject && !this.renderObject.position.equals(this.position)) {
+			if (this.visible) {
+				if (!this.animationRunning) {
+					this.animationRunning = true;
+					requestAnimationFrame(this.moveAnimation);
+				}
+			} else {
+				this.renderObject.position.copy(this.position);
+			}
+		}
+	};
+
+	moveAnimation = (time) => {
+		let delta = time - this.lastFrame;
+		if (this.lastFrame === -1){
+			delta = 20;
+		}
+		this.lastFrame = time;
+
+		if (this.renderObject && !this.renderObject.position.equals(this.position)) {
+			this.renderObject.position.x += (this.position.x - this.renderObject.position.x) * 0.01 * delta;
+			this.renderObject.position.y += (this.position.y - this.renderObject.position.y) * 0.01 * delta;
+			this.renderObject.position.z += (this.position.z - this.renderObject.position.z) * 0.01 * delta;
+
+			if (this.renderObject.position.distanceToSquared(this.position) < 0.001) {
+				this.renderObject.position.copy(this.position);
+			}
+
+			this.blueMap.updateFrame = true;
+
+			requestAnimationFrame(this.moveAnimation);
+		} else {
+			this.animationRunning = false;
+			this.lastFrame = -1;
+		}
+	};
+
+	onClick = () => {
+
+	}
+
+}

BlueMapCore/src/main/webroot/js/libs/hud/PlayerMarkerSet.js

@@ -0,0 +1,85 @@
+import POIMarker from "./POIMarker";
+import ShapeMarker from "./ShapeMarker";
+import {cachePreventionNr} from "../utils";
+import PlayerMarker from "./PlayerMarker";
+import {Vector3} from "three";
+
+export default class PlayerMarkerSet {
+
+	constructor(blueMap) {
+		this.blueMap = blueMap;
+		this.id = "bluemap-live-players";
+		this.label = "players";
+		this.toggleable = true;
+		this.defaultHide = false;
+		this.marker = [];
+		this.markerMap = {};
+
+		this.visible = true;
+	}
+
+	update() {
+		this.marker.forEach(marker => {
+			marker.setVisible(this.visible);
+		});
+	}
+
+	async updateLive(){
+		await new Promise((resolve, reject) => {
+			this.blueMap.fileLoader.load(this.blueMap.liveApiRoot + 'players?' + cachePreventionNr(),
+				liveData => {
+					try {
+						liveData = JSON.parse(liveData);
+						resolve(liveData);
+					} catch (e){
+						reject(e);
+					}
+				},
+				xhr => {},
+				error => {
+					reject(error);
+				}
+			);
+		}).then((liveData) => {
+			this.updateWith(liveData)
+		}).catch((e) => {
+			console.error("Failed to update player-markers!", e);
+		});
+	}
+
+	updateWith(liveData){
+		this.marker.forEach(marker => {
+			marker.nowOnline = false;
+		});
+
+		for(let i = 0; i < liveData.players.length; i++){
+			let player = liveData.players[i];
+			let marker = this.markerMap[player.uuid];
+
+			if (!marker){
+				marker = new PlayerMarker(this.blueMap, this, {
+					type: "playermarker",
+					map: null,
+					position: player.position,
+					label: player.name,
+					link: null,
+					newTab: false
+				}, player.uuid, player.world);
+
+				this.markerMap[player.uuid] = marker;
+				this.marker.push(marker);
+			}
+
+			marker.nowOnline = true;
+			marker.position = new Vector3(player.position.x, player.position.y + 1.5, player.position.z);
+			marker.updatePosition();
+		}
+
+		this.marker.forEach(marker => {
+			if (marker.nowOnline !== marker.online){
+				marker.online = marker.nowOnline;
+				marker.setVisible(this.visible);
+			}
+		});
+	}
+}

BlueMapCore/src/main/webroot/style/modules/hudInfo.scss

@@ -76,7 +76,7 @@
     }
 }
 
-.bluemap-container .marker-poi {
+.bluemap-container .marker-poi, .bluemap-container .marker-player {
     pointer-events: none;
 
     > * {
@@ -87,3 +87,38 @@
         filter: drop-shadow(1px 1px 3px #0008);
     }
 }
+
+.bluemap-container .marker-player {
+    img {
+        width: 32px;
+        height: 32px;
+
+        image-rendering: pixelated;
+        image-rendering: crisp-edges;
+
+        transition: all 0.3s;
+    }
+
+    .nameplate {
+        position: absolute;
+        left: 50%;
+        top: 0;
+        transform: translate(-50%, -110%);
+        background: rgba(50, 50, 50, 0.75);
+        padding: 0.2em 0.3em;
+        color: white;
+
+        transition: all 0.3s;
+    }
+
+    &.distant {
+        img {
+            width: 16px;
+            height: 16px;
+        }
+
+        .nameplate {
+            opacity: 0;
+        }
+    }
+}