Add showworldborder setting, 1.8 vanilla world border support

src/main/java/org/dynmap/bukkit/BukkitVersionHelper.java

@@ -13,6 +13,7 @@ import org.bukkit.Server;
 import org.bukkit.World;
 import org.bukkit.entity.Player;
 import org.dynmap.Log;
+import org.dynmap.utils.Polygon;
 
 /**
  * Helper for isolation of bukkit version specific issues
@@ -143,4 +144,8 @@ public abstract class BukkitVersionHelper {
      * Get player health
      */
     public abstract double getHealth(Player p);
+    /**
+     * Get world border
+     */
+    public Polygon getWorldBorder(World world) { return null; }
 }

src/main/java/org/dynmap/bukkit/BukkitVersionHelperCB.java

@@ -12,6 +12,7 @@ import org.bukkit.Server;
 import org.bukkit.World;
 import org.dynmap.Log;
 import org.dynmap.common.BiomeMap;
+import org.dynmap.utils.Polygon;
 
 /**
  * Helper for isolation of bukkit version specific issues
@@ -24,6 +25,12 @@ public class BukkitVersionHelperCB extends BukkitVersionHelperGeneric {
     private Field blockname;
     private Field material;
     private Method blockbyidfunc;   // 1.7+ method for getting block by id
+    private Method getworldborder;  // 1.8+ method for getting world border
+    private Class<?> nmsworldborder;
+    private Method worldborderminx;
+    private Method worldbordermaxx;
+    private Method worldborderminz;
+    private Method worldbordermaxz;
     
     BukkitVersionHelperCB() {
     }
@@ -65,6 +72,7 @@ public class BukkitVersionHelperCB extends BukkitVersionHelperGeneric {
         nmsworld = getNMSClass("net.minecraft.server.WorldServer");
         chunkprovserver = getNMSClass("net.minecraft.server.ChunkProviderServer");
         nmsw_chunkproviderserver = getField(nmsworld, new String[] { "chunkProviderServer" }, chunkprovserver);
+        getworldborder = getMethodNoFail(nmsworld, new String[] { "af" }, nulltypes);
         
         longhashset = getOBCClassNoFail("org.bukkit.craftbukkit.util.LongHashSet");
         if(longhashset != null) {
@@ -81,12 +89,21 @@ public class BukkitVersionHelperCB extends BukkitVersionHelperGeneric {
         }
         /** n.m.s.Chunk */
         nmschunk = getNMSClass("net.minecraft.server.Chunk");
-        nmsc_removeentities = getMethod(nmschunk, new String[] { "removeEntities" }, new Class[0]);
+        nmsc_removeentities = getMethod(nmschunk, new String[] { "removeEntities" }, nulltypes);
         nmsc_tileentities = getField(nmschunk, new String[] { "tileEntities" }, Map.class);
         nmsc_inhabitedticks = getFieldNoFail(nmschunk, new String[] { "s", "q", "u" }, long.class);
         if (nmsc_inhabitedticks == null) {
             Log.info("inhabitedTicks field not found - inhabited shader not functional");
         }
+        /** n.m.s.WorldBorder */
+        nmsworldborder = getNMSClassNoFail("net.minecraft.server.WorldBorder");
+        if (nmsworldborder != null) {
+            worldborderminx = getMethod(nmsworldborder, new String[] { "b" }, nulltypes);
+            worldborderminz = getMethod(nmsworldborder, new String[] { "c" }, nulltypes);
+            worldbordermaxx = getMethod(nmsworldborder, new String[] { "d" }, nulltypes);
+            worldbordermaxz = getMethod(nmsworldborder, new String[] { "e" }, nulltypes);
+        }
+        
         /** nbt classes */
         nbttagcompound = getNMSClass("net.minecraft.server.NBTTagCompound");
         nbttagbyte = getNMSClass("net.minecraft.server.NBTTagByte");
@@ -229,4 +246,28 @@ public class BukkitVersionHelperCB extends BukkitVersionHelperGeneric {
         }
         return new int[0];
     }
+    @Override
+    public Polygon getWorldBorder(World world) {
+        Polygon p = null;
+        if ((getworldborder == null) || (world == null)) {
+            return null;
+        }
+        Object cw = getNMSWorld(world);
+        if (cw == null) return null;
+        Object wb = callMethod(cw, getworldborder, nullargs, null);
+        if (wb != null) {
+            double minx = (Double) callMethod(wb, worldborderminx, nullargs, Double.MIN_VALUE);
+            double minz = (Double) callMethod(wb, worldborderminz, nullargs, Double.MIN_VALUE);
+            double maxx = (Double) callMethod(wb, worldbordermaxx, nullargs, Double.MAX_VALUE);
+            double maxz = (Double) callMethod(wb, worldbordermaxz, nullargs, Double.MAX_VALUE);
+            if (maxx < 1E7) {
+                p = new Polygon();
+                p.addVertex(minx, minz);
+                p.addVertex(minx, maxz);
+                p.addVertex(maxx, maxz);
+                p.addVertex(maxx, minz);
+            }
+        }
+        return p;
+    }
 }

src/main/java/org/dynmap/bukkit/BukkitVersionHelperGeneric.java

@@ -23,7 +23,8 @@ public abstract class BukkitVersionHelperGeneric extends BukkitVersionHelper {
     private String obc_package; // Package used for org.bukkit.craftbukkit
     protected String nms_package; // Package used for net.minecraft.server
     private boolean failed;
-    private static final Object[] nullargs = new Object[0];
+    protected static final Object[] nullargs = new Object[0];
+    protected static final Class[] nulltypes = new Class[0];
     private static final Map nullmap = Collections.emptyMap();
     
     /** CraftChunkSnapshot */
@@ -143,7 +144,11 @@ public abstract class BukkitVersionHelperGeneric extends BukkitVersionHelper {
     protected Class<?> getNMSClass(String classname) {
         return getClassByName(classname, "net.minecraft.server", nms_package, false);
     }
-    
+
+    protected Class<?> getNMSClassNoFail(String classname) {
+        return getClassByName(classname, "net.minecraft.server", nms_package, true);
+    }
+
     protected Class<?> getClassByName(String classname, String base, String mapping, boolean nofail) {
         String n = classname;
         int idx = classname.indexOf(base);
@@ -249,7 +254,7 @@ public abstract class BukkitVersionHelperGeneric extends BukkitVersionHelper {
         }
         return null;
     }
-    private Object callMethod(Object obj, Method meth, Object[] args, Object def) {
+    protected Object callMethod(Object obj, Method meth, Object[] args, Object def) {
         if((obj == null) || (meth == null)) {
             return def;
         }

src/main/java/org/dynmap/bukkit/BukkitWorld.java

@@ -18,6 +18,7 @@ import org.dynmap.DynmapChunk;
 import org.dynmap.DynmapLocation;
 import org.dynmap.DynmapWorld;
 import org.dynmap.utils.MapChunkCache;
+import org.dynmap.utils.Polygon;
 import org.dynmap.utils.TileFlags;
 
 public class BukkitWorld extends DynmapWorld {
@@ -242,5 +243,8 @@ public class BukkitWorld extends DynmapWorld {
         }
         return cnt;
     }
-
+    @Override
+    public Polygon getWorldBorder() {
+        return DynmapPlugin.plugin.getWorldBorder(world);
+    }
 }

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

@@ -94,6 +94,7 @@ import org.dynmap.hdmap.HDMap;
 import org.dynmap.markers.MarkerAPI;
 import org.dynmap.modsupport.ModSupportImpl;
 import org.dynmap.utils.MapChunkCache;
+import org.dynmap.utils.Polygon;
 import org.dynmap.utils.VisibilityLimit;
 
 public class DynmapPlugin extends JavaPlugin implements DynmapAPI {
@@ -1619,4 +1620,8 @@ public class DynmapPlugin extends JavaPlugin implements DynmapAPI {
             String[] lines, String playerid) {
         core.processSignChange(blkid, world, x, y, z, lines, playerid);
     }
+    
+    Polygon getWorldBorder(World w) {
+        return helper.getWorldBorder(w);
+    }
 }

src/main/resources/configuration.txt

@@ -125,6 +125,8 @@ components:
     spawnbedhidebydefault: true
     spawnbedminzoom: 0
     spawnbedformat: "%name%'s bed"
+    # (optional) show world border (vanilla 1.8+)
+    showworldborder: true
     
   - class: org.dynmap.ClientComponent
     type: chat