Add server-side generation of faces : fixes face accessory issues, IE8

src/main/java/org/dynmap/DynmapPlugin.java

@@ -44,6 +44,7 @@ import org.bukkit.event.entity.EntityListener;
 import org.bukkit.event.player.PlayerChatEvent;
 import org.bukkit.event.player.PlayerJoinEvent;
 import org.bukkit.event.player.PlayerListener;
+import org.bukkit.event.player.PlayerLoginEvent;
 import org.bukkit.event.player.PlayerMoveEvent;
 import org.bukkit.event.player.PlayerQuitEvent;
 import org.bukkit.event.world.ChunkLoadEvent;
@@ -74,6 +75,7 @@ public class DynmapPlugin extends JavaPlugin {
     public HashSet<String> enabledTriggers = new HashSet<String>();
     public PermissionProvider permissions;
     public ComponentManager componentManager = new ComponentManager();
+    public PlayerFaces playerfacemgr;
     public Events events = new Events();
     public String deftemplatesuffix = "";
     /* Flag to let code know that we're doing reload - make sure we don't double-register event handlers */
@@ -252,6 +254,8 @@ public class DynmapPlugin extends JavaPlugin {
         mapManager = new MapManager(this, configuration);
         mapManager.startRendering();
 
+        playerfacemgr = new PlayerFaces(this);
+        
         loadWebserver();
 
         enabledTriggers.clear();
@@ -342,6 +346,7 @@ public class DynmapPlugin extends JavaPlugin {
             List<Listener> ll = event_handlers.get(t);
             ll.clear(); /* Empty list - we use presence of list to remember that we've registered with Bukkit */
         }
+        playerfacemgr = null;
         
         Debug.clearDebuggers();
     }
@@ -992,6 +997,16 @@ public class DynmapPlugin extends JavaPlugin {
                 }
             }
         }
+        @Override
+        public void onPlayerLogin(PlayerLoginEvent event) {
+            /* Call listeners */
+            List<Listener> ll = event_handlers.get(event.getType());
+            if(ll != null) {
+                for(Listener l : ll) {
+                    ((PlayerListener)l).onPlayerLogin(event);
+                }
+            }
+        }
 
         @Override
         public void onPlayerMove(PlayerMoveEvent event) {

src/main/java/org/dynmap/PlayerFaces.java

@@ -0,0 +1,135 @@
+package org.dynmap;
+
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+
+import javax.imageio.ImageIO;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.Event.Type;
+import org.bukkit.event.player.PlayerListener;
+import org.bukkit.event.player.PlayerLoginEvent;
+import org.dynmap.MapType.ImageFormat;
+import org.dynmap.debug.Debug;
+import org.dynmap.utils.DynmapBufferedImage;
+import org.dynmap.utils.FileLockManager;
+
+/**
+ * Listen for player logins, and process player faces by fetching skins *
+ */
+public class PlayerFaces {
+    private DynmapPlugin plugin;
+    private File facesdir;
+    private File faces8x8dir;
+    private File faces16x16dir;
+    private File faces32x32dir;
+
+    
+    private class LoadPlayerImages implements Runnable {
+        public String playername;
+        public LoadPlayerImages(String playername) {
+            this.playername = playername;
+        }
+        public void run() {
+            BufferedImage img = null;
+            try {
+                URL url = new URL("http://s3.amazonaws.com/MinecraftSkins/" + playername + ".png");
+                img = ImageIO.read(url);    /* Load skin for player */
+            } catch (IOException iox) {
+                Debug.debug("Error loading skin for '" + playername + "' - " + iox);
+            }
+            if(img == null) {
+                try {
+                    InputStream in = getClass().getResourceAsStream("/char.png");
+                    img = ImageIO.read(in);    /* Load generic skin for player */
+                    in.close();
+                } catch (IOException iox) {
+                    Debug.debug("Error loading default skin for '" + playername + "' - " + iox);
+                }
+            }
+            if(img == null) {   /* No image to process?  Quit */
+                return;
+            }
+            int[] faceaccessory = new int[64];  /* 8x8 of face accessory */
+            /* Get buffered image for face at 8x8 */
+            DynmapBufferedImage face8x8 = DynmapBufferedImage.allocateBufferedImage(8, 8);
+            img.getRGB(8, 8, 8, 8, face8x8.argb_buf, 0, 8); /* Read face from image */
+            img.getRGB(40, 8, 8, 8, faceaccessory, 0, 8); /* Read face accessory from image */
+            /* Apply accessory to face: first element is transparency color so only ones not matching it */
+            for(int i = 0; i < 64; i++) {
+                if(faceaccessory[i] != faceaccessory[0]) 
+                    face8x8.argb_buf[i] = faceaccessory[i];
+            }
+            /* Write 8x8 file */
+            File img_8x8 = new File(faces8x8dir, playername + ".png");
+            FileLockManager.getWriteLock(img_8x8);
+            try {
+                FileLockManager.imageIOWrite(face8x8.buf_img, ImageFormat.FORMAT_PNG, img_8x8);
+            } catch (IOException iox) {
+                Log.severe("Cannot write player icon " + img_8x8.getPath());
+            }
+            FileLockManager.releaseWriteLock(img_8x8);
+            /* Make 16x16 version */
+            DynmapBufferedImage face16x16 = DynmapBufferedImage.allocateBufferedImage(16, 16);
+            for(int i = 0; i < 16; i++) {
+                for(int j = 0; j < 16; j++) {
+                    face16x16.argb_buf[i*16+j] = face8x8.argb_buf[(i/2)*8 + (j/2)];
+                }
+            }
+            /* Write 16x16 file */
+            File img_16x16 = new File(faces16x16dir, playername + ".png");
+            FileLockManager.getWriteLock(img_16x16);
+            try {
+                FileLockManager.imageIOWrite(face16x16.buf_img, ImageFormat.FORMAT_PNG, img_16x16);
+            } catch (IOException iox) {
+                Log.severe("Cannot write player icon " + img_16x16.getPath());
+            }
+            FileLockManager.releaseWriteLock(img_16x16);
+            DynmapBufferedImage.freeBufferedImage(face16x16);
+
+            /* Make 32x32 version */
+            DynmapBufferedImage face32x32 = DynmapBufferedImage.allocateBufferedImage(32, 32);
+            for(int i = 0; i < 32; i++) {
+                for(int j = 0; j < 32; j++) {
+                    face32x32.argb_buf[i*32+j] = face8x8.argb_buf[(i/4)*8 + (j/4)];
+                }
+            }
+            /* Write 32x32 file */
+            File img_32x32 = new File(faces32x32dir, playername + ".png");
+            FileLockManager.getWriteLock(img_32x32);
+            try {
+                FileLockManager.imageIOWrite(face32x32.buf_img, ImageFormat.FORMAT_PNG, img_32x32);
+            } catch (IOException iox) {
+                Log.severe("Cannot write player icon " + img_32x32.getPath());
+            }
+            FileLockManager.releaseWriteLock(img_32x32);
+            DynmapBufferedImage.freeBufferedImage(face32x32);
+            
+            DynmapBufferedImage.freeBufferedImage(face8x8);
+            /* TODO: signal update for player icon to client */
+        }
+    }
+    private class LoginListener extends PlayerListener {
+        @Override
+        public void onPlayerLogin(PlayerLoginEvent event) {
+            MapManager.scheduleDelayedJob(new LoadPlayerImages(event.getPlayer().getName()), 0);
+        }
+    }
+    public PlayerFaces(DynmapPlugin plugin) {
+        this.plugin = plugin;
+        plugin.registerEvent(Type.PLAYER_LOGIN, new LoginListener());
+        facesdir = new File(plugin.tilesDirectory, "faces");
+        facesdir.mkdirs();  /* Make sure directory exists */
+        faces8x8dir = new File(facesdir, "8x8");
+        faces8x8dir.mkdirs();
+        faces16x16dir = new File(facesdir, "16x16");
+        faces16x16dir.mkdirs();
+        faces32x32dir = new File(facesdir, "32x32");
+        faces32x32dir.mkdirs();
+    }
+
+    
+}

web/js/map.js

@@ -41,7 +41,6 @@ DynMap.prototype = {
     inittime: new Date().getTime(),
 	followingPlayer: '',
 	missedupdates: 0,
-	canvassupport: !!document.createElement('canvas').getContext,
 	formatUrl: function(name, options) {
 		var url = this.options.url[name];
 		$.each(options, function(n,v) {
@@ -133,9 +132,6 @@ DynMap.prototype = {
 			me.maptype.updateTileSize(me.map.zoom);
 			$(me).trigger('zoomchanged');
 		};
-		
-		if(me.canvassupport == false)
-			me.options.showplayerfacesinmenu = false;
 			
 		/*google.maps.event.addListener(map, 'dragstart', function(mEvent) {
 			me.followPlayer(null);

web/js/minecraft.js

@@ -1,61 +1,19 @@
-var cloneCanvas = function(self) {
-	var c = document.createElement('canvas');
-	c.width = self.width;
-	c.height = self.height;
-	var cxt = c.getContext('2d');
-	cxt.drawImage(self,0,0);
-	return c;
-};
-
-function blitImage(ctx, image, sx ,sy, sw, sh, dx, dy, dw, dh) {
-	var x; var y;
-	for (x=0;x<dw;x++) {
-		for (y=0;y<dh;y++) {
-			ctx.drawImage(image,Math.floor(sx+x*(sw/dw)),Math.floor(sy+y*(sw/dw)),1,1,dx+x,dy+y,1,1);
-		}
-	}	
-}
-
-function createMinecraftHead(player,completed,failed) {
-	var skinImage = new Image();
-	skinImage.onload = function() {
-		var headCanvas = document.createElement('canvas');
-		headCanvas.width = 8;
-		headCanvas.height = 8;
-		if(headCanvas.getContext) {
-			var headContext = headCanvas.getContext('2d');
-			blitImage(headContext, skinImage,  8,8,8,8, 0,0,8,8);
-			// Turn off accessory face overlay - causes white faces, and very few skins seem to have them anyway
-			//blitImage(headContext, skinImage, 40,8,8,8, 0,0,8,8);
-			completed(headCanvas);
-		}
-		else {
-			failed();
-		}
+function createMinecraftHead(player,size,completed,failed) {
+	var faceImage = new Image();
+	faceImage.onload = function() {
+		completed(faceImage);
 	};
-	skinImage.onerror = function() {
-		if (skinImage.src == '//www.minecraft.net/img/char.png') {
-			failed();
-		} else {
-			skinImage.src = '//www.minecraft.net/img/char.png';
-		}
+	faceImage.onerror = function() {
+		failed();
 	};
-	skinImage.src = '//s3.amazonaws.com/MinecraftSkins/' + player + '.png';
-}
-
-function resizeImage(img,size) {
-	var canvas = document.createElement('canvas');
-	canvas.width = size;
-	canvas.height = size;
-	var ctx = canvas.getContext('2d');
-	blitImage(ctx, img, 0,0,img.width,img.height, 0,0,size,size);
-	return canvas;
+	faceImage.src = dynmap.options.tileUrl + 'faces/' + size + 'x' + size + '/' + player + '.png';
 }
 
 var playerHeads = {};
 
 function getMinecraftHead(player,size,completed) {
-	var head = playerHeads[player];
+    var key = player + '.' + size;
+	var head = playerHeads[key];
 	// Synchronous
 	if (!completed) {
 		return (!head || head.working) ? null : head;
@@ -63,24 +21,22 @@ function getMinecraftHead(player,size,completed) {
 
 	// Asynchronous
 	if (!head) {
-		playerHeads[player] = { working: true, hooks: [{f:completed,s:size}] };
-		//console.log('Creating head for ',player,'...');
-		createMinecraftHead(player, function(head) {
-			//console.log('Created head for ',player,': ', head);
-			hooks = playerHeads[player].hooks;
-			playerHeads[player] = head;
+		playerHeads[key] = { working: true, hooks: [{f:completed}] };
+		createMinecraftHead(player, size, function(head) {
+			hooks = playerHeads[key].hooks;
+			playerHeads[key] = head;
 			var i;
 			for(i=0;i<hooks.length;i++) {
-				hooks[i].f(resizeImage(head,hooks[i].s));
+				hooks[i].f(head);
 			}
 		}, function() {
 			
 		});
 	} else if (head.working) {
 		//console.log('Other process working on head of ',player,', will add myself to hooks...');
-		head.hooks[head.hooks.length] = {f:completed,s:size};
+		head.hooks[head.hooks.length] = {f:completed};
 	} else {
-		completed(resizeImage(head,size));
+		completed(head);
 	}
 }