New "setcorners" command to set border based on corner coordinates: /wb [world] setcorners <x1> <z1> <x2> <z2>

This is useful now that border shapes can be rectangular/elliptical with different X and Z radius values.

Also various cleanup of new rectangular/elliptical support. Commands can now accept a single radius value (as it used to) or separate X and Z. Radius is displayed as single number if X and Z are equal. "shape" and "wshape" commands accept round|square as before for backwards compatibility and simplicity, alongside the new elliptical|rectangular (which work the same). Updated config loader to support loading older configs with single radius value specified. Added various other methods for backwards compatibility.

src/com/wimbli/WorldBorder/BorderData.java

@@ -30,13 +30,21 @@ public class BorderData
 
 	public BorderData(double x, double z, int radiusX, int radiusZ)
 	{
-		setData(x, z, radiusX, radiusZ , null);
+		setData(x, z, radiusX, radiusZ, null);
 	}
 	public BorderData(double x, double z, int radiusX, int radiusZ, Boolean shapeRound)
 	{
 		setData(x, z, radiusX, radiusZ, shapeRound);
 	}
-	
+	public BorderData(double x, double z, int radius)
+	{
+		setData(x, z, radius, null);
+	}
+	public BorderData(double x, double z, int radius, Boolean shapeRound)
+	{
+		setData(x, z, radius, shapeRound);
+	}
+
 	public final void setData(double x, double z, int radiusX, int radiusZ, Boolean shapeRound)
 	{
 		this.x = x;
@@ -45,6 +53,10 @@ public class BorderData
 		this.setRadiusX(radiusX);
 		this.setRadiusZ(radiusZ);
 	}
+	public final void setData(double x, double z, int radius, Boolean shapeRound)
+	{
+		setData(x, z, radius, radius, shapeRound);
+	}
 
 	public BorderData copy()
 	{
@@ -98,6 +110,23 @@ public class BorderData
 		this.DefiniteRectangleZ = Math.sqrt(.5 * this.radiusZSquared);
 	}
 
+
+	// backwards-compatible methods from before elliptical/rectangular shapes were supported
+	/**
+	 * @deprecated  Replaced by {@link #getRadiusX()} and {@link #getRadiusZ()};
+	 * this method now returns an average of those two values and is thus imprecise
+	 */
+	public int getRadius()
+	{
+		return (radiusX + radiusZ) / 2;  // average radius; not great, but probably best for backwards compatibility
+	}
+	public void setRadius(int radius)
+	{
+		setRadiusX(radius);
+		setRadiusZ(radius);
+	}
+
+
 	public Boolean getShape()
 	{
 		return shapeRound;
@@ -110,7 +139,7 @@ public class BorderData
 	@Override
 	public String toString()
 	{
-		return "radius " + radiusX + "-" + radiusZ + " at X: " + Config.coord.format(x) + " Z: " + Config.coord.format(z) + (shapeRound != null ? (" (shape override: " + (shapeRound.booleanValue() ? "round" : "square") + ")") : "");
+		return "radius " + ((radiusX == radiusZ) ? radiusX : radiusX + "x" + radiusZ) + " at X: " + Config.coord.format(x) + " Z: " + Config.coord.format(z) + (shapeRound != null ? (" (shape override: " + Config.ShapeName(shapeRound.booleanValue()) + ")") : "");
 	}
 
 	// This algorithm of course needs to be fast, since it will be run very frequently
@@ -133,7 +162,7 @@ public class BorderData
 
 			if (X < DefiniteRectangleX && Z < DefiniteRectangleZ)
 				return true;	// Definitely inside
-			else if (X >= radiusX || Z >= radiusZ) //I'm not sure about this one...the chance that a player is totally outside the rectangle around the ellipse is only given if he teleports, and that shouldn't be that frequently
+			else if (X >= radiusX || Z >= radiusZ)
 				return false;	// Definitely outside
 			else if (X * X + Z * Z * radiusSquaredQuotient < radiusXSquared)
 				return true;	// After further calculation, inside
@@ -176,14 +205,9 @@ public class BorderData
 		// round border
 		else
 		{
-			// algorithm from: http://stackoverflow.com/questions/300871/best-way-to-find-a-point-on-a-circle-closest-to-a-given-point
+			// algorithm originally from: http://stackoverflow.com/questions/300871/best-way-to-find-a-point-on-a-circle-closest-to-a-given-point
-			//double vX = xLoc - x;
+			// modified by Lang Lukas to support elliptical border shape
-			//double vZ = zLoc - z;
+
-			//double magV = Math.sqrt(vX*vX / radiusXSquared + vZ*vZ / radiusZSquared);
-			//xLoc = x + vX / (radiusX * magV) * (radiusX - Config.KnockBack());
-			//zLoc = z + vZ / (radiusZ * magV) * (radiusZ - Config.KnockBack());
-			
-			
 			//Transform the ellipse to a circle with radius 1 (we need to transform the point the same way)
 			double dX = xLoc - x;
 			double dZ = zLoc - z;
@@ -192,7 +216,6 @@ public class BorderData
 			double f = (1 / dT - Config.KnockBack() / dU); //"correction" factor for the distances
 			xLoc = x + dX * f;
 			zLoc = z + dZ * f;
-			
 		}
 
 		int ixLoc = Location.locToBlock(xLoc);
@@ -279,6 +302,6 @@ public class BorderData
 	@Override
 	public int hashCode()
 	{
-		return (((int)(this.x * 10) << 4) + (int)this.z + (this.radiusX << 2));
+		return (((int)(this.x * 10) << 4) + (int)this.z + (this.radiusX << 2) + (this.radiusZ << 3));
 	}
 }

src/com/wimbli/WorldBorder/Config.java

@@ -49,6 +49,7 @@ public class Config
 		return System.currentTimeMillis();
 	}
 
+
 	public static void setBorder(String world, BorderData border)
 	{
 		borders.put(world, border);
@@ -56,7 +57,7 @@ public class Config
 		save(true);
 		DynMapFeatures.showBorder(world, border);
 	}
-	
+
 	public static void setBorder(String world, int radiusX, int radiusZ, double x, double z, Boolean shapeRound)
 	{
 		setBorder(world, new BorderData(x, z, radiusX, radiusZ, shapeRound));
@@ -68,6 +69,35 @@ public class Config
 		setBorder(world, new BorderData(x, z, radiusX, radiusZ, oldShape));
 	}
 
+
+	// backwards-compatible methods from before elliptical/rectangular shapes were supported
+	public static void setBorder(String world, int radius, double x, double z, Boolean shapeRound)
+	{
+		setBorder(world, new BorderData(x, z, radius, radius, shapeRound));
+	}
+	public static void setBorder(String world, int radius, double x, double z)
+	{
+		setBorder(world, radius, radius, x, z);
+	}
+
+
+	// set border based on corner coordinates
+	public static void setBorderCorners(String world, double x1, double z1, double x2, double z2, Boolean shapeRound)
+	{
+		double radiusX = Math.abs(x1 - x2) / 2;
+		double radiusZ = Math.abs(z1 - z2) / 2;
+		double x = ((x1 < x2) ? x1 : x2) + radiusX;
+		double z = ((z1 < z2) ? z1 : z2) + radiusZ;
+		setBorder(world, new BorderData(x, z, (int)Math.round(radiusX), (int)Math.round(radiusZ), shapeRound));
+	}
+	public static void setBorderCorners(String world, double x1, double z1, double x2, double z2)
+	{
+		BorderData old = Border(world);
+		Boolean oldShape = (old == null) ? null : old.getShape();
+		setBorderCorners(world, x1, z1, x2, z2, oldShape);
+	}
+
+
 	public static void removeBorder(String world)
 	{
 		borders.remove(world);
@@ -131,7 +161,7 @@ public class Config
 	public static void setShape(boolean round)
 	{
 		shapeRound = round;
-		Log("Set default border shape to " + (round ? "elliptic" : "rectangular") + ".");
+		Log("Set default border shape to " + (ShapeName()) + ".");
 		save(true);
 		DynMapFeatures.showAllBorders();
 	}
@@ -141,6 +171,15 @@ public class Config
 		return shapeRound;
 	}
 
+	public static String ShapeName()
+	{
+		return ShapeName(shapeRound);
+	}
+	public static String ShapeName(boolean round)
+	{
+		return round ? "elliptic/round" : "rectangular/square";
+	}
+
 	public static void setDebug(boolean debugMode)
 	{
 		DEBUG = debugMode;
@@ -343,7 +382,7 @@ public class Config
 	}
 
 
-	private static final int currentCfgVersion = 5;
+	private static final int currentCfgVersion = 6;
 
 	public static void load(WorldBorder master, boolean logIt)
 	{	// load config from file
@@ -362,7 +401,7 @@ public class Config
 		timerTicks = cfg.getInt("timer-delay-ticks", 5);
 		dynmapEnable = cfg.getBoolean("dynmap-border-enabled", true);
 		dynmapMessage = cfg.getString("dynmap-border-message", "The border of the world.");
-		LogConfig("Using " + (shapeRound ? "elliptic" : "rectangular") + " border, knockback of " + knockBack + " blocks, and timer delay of " + timerTicks + ".");
+		LogConfig("Using " + (ShapeName()) + " border, knockback of " + knockBack + " blocks, and timer delay of " + timerTicks + ".");
 
 		StartBorderTimer();
 
@@ -389,6 +428,14 @@ public class Config
 				if (cfgVersion > 3)
 					worldName = worldName.replace("<", ".");
 
+				// backwards compatibility for config from before elliptical/rectangular borders were supported
+				if (bord.isSet("radius") && !bord.isSet("radiusX"))
+				{
+					int radius = bord.getInt("radius");
+					bord.set("radiusX", radius);
+					bord.set("radiusZ", radius);
+				}
+
 				Boolean overrideShape = (Boolean) bord.get("shape-round");
 				BorderData border = new BorderData(bord.getDouble("x", 0), bord.getDouble("z", 0), bord.getInt("radiusX", 0), bord.getInt("radiusZ", 0), overrideShape);
 				borders.put(worldName, border);

src/com/wimbli/WorldBorder/WBCommand.java

@@ -71,7 +71,7 @@ public class WBCommand implements CommandExecutor
 		}
 
 		// "set" command from player or console, world specified
-		if (split.length == 6 && split[1].equalsIgnoreCase("set"))
+		if ((split.length == 5 || split.length == 6) && split[1].equalsIgnoreCase("set"))
 		{
 			if (!Config.HasPermission(player, "set")) return true;
 
@@ -79,23 +79,23 @@ public class WBCommand implements CommandExecutor
 			if (world == null)
 				sender.sendMessage("The world you specified (\"" + split[0] + "\") could not be found on the server, but data for it will be stored anyway.");
 
-			if(cmdSet(sender, split[0], split, 2) && player != null)
+			if(cmdSet(sender, split[0], split, 2, (split.length == 5)) && player != null)
 				sender.sendMessage("Border has been set. " + Config.BorderDescription(split[0]));
 		}
 
 		// "set" command from player, using current world, X and Z specified
-		else if (split.length == 5 && split[0].equalsIgnoreCase("set") && player != null)
+		else if ((split.length == 4 || split.length == 5) && split[0].equalsIgnoreCase("set") && player != null)
 		{
 			if (!Config.HasPermission(player, "set")) return true;
 
 			String world = player.getWorld().getName();
 
-			if (cmdSet(sender, world, split, 1))
+			if (cmdSet(sender, world, split, 1, (split.length == 4)))
 				sender.sendMessage("Border has been set. " + Config.BorderDescription(world));
 		}
 
 		// "set" command from player, using current world, X and Z NOT specified
-		else if (split.length == 3 && split[0].equalsIgnoreCase("set") && player != null)
+		else if ((split.length == 2 || split.length == 3) && split[0].equalsIgnoreCase("set") && player != null)
 		{
 			if (!Config.HasPermission(player, "set")) return true;
 
@@ -108,11 +108,14 @@ public class WBCommand implements CommandExecutor
 			try
 			{
 				radiusX = Integer.parseInt(split[1]);
-				radiusZ = Integer.parseInt(split[2]);
+				if (split.length == 3)
+					radiusZ = Integer.parseInt(split[2]);
+				else
+					radiusZ = radiusX;
 			}
 			catch(NumberFormatException ex)
 			{
-				sender.sendMessage(clrErr + "The radius values must be integers.");
+				sender.sendMessage(clrErr + "The radius value(s) must be integers.");
 				return true;
 			}
 
@@ -120,8 +123,60 @@ public class WBCommand implements CommandExecutor
 			sender.sendMessage("Border has been set. " + Config.BorderDescription(world));
 		}
 
+		// "setcorners" command from player or console, world specified
+		else if (split.length == 6 && split[1].equalsIgnoreCase("setcorners"))
+		{
+			if (!Config.HasPermission(player, "set")) return true;
+
+			String world = split[0];
+			World worldTest = sender.getServer().getWorld(world);
+			if (worldTest == null)
+				sender.sendMessage("The world you specified (\"" + world + "\") could not be found on the server, but data for it will be stored anyway.");
+
+			try
+			{
+				double x1 = Double.parseDouble(split[2]);
+				double z1 = Double.parseDouble(split[3]);
+				double x2 = Double.parseDouble(split[4]);
+				double z2 = Double.parseDouble(split[5]);
+				Config.setBorderCorners(world, x1, z1, x2, z2);
+			}
+			catch(NumberFormatException ex)
+			{
+				sender.sendMessage(clrErr + "The x1, z1, x2, and z2 values must be numerical.");
+				return true;
+			}
+
+			if(player != null)
+				sender.sendMessage("Border has been set. " + Config.BorderDescription(world));
+		}
+
+		// "setcorners" command from player, using current world
+		else if (split.length == 5 && split[0].equalsIgnoreCase("setcorners") && player != null)
+		{
+			if (!Config.HasPermission(player, "set")) return true;
+
+			String world = player.getWorld().getName();
+
+			try
+			{
+				double x1 = Double.parseDouble(split[1]);
+				double z1 = Double.parseDouble(split[2]);
+				double x2 = Double.parseDouble(split[3]);
+				double z2 = Double.parseDouble(split[4]);
+				Config.setBorderCorners(world, x1, z1, x2, z2);
+			}
+			catch(NumberFormatException ex)
+			{
+				sender.sendMessage(clrErr + "The x1, z1, x2, and z2 values must be numerical.");
+				return true;
+			}
+
+			sender.sendMessage("Border has been set. " + Config.BorderDescription(world));
+		}
+
 		// "radius" command from player or console, world specified
-		else if (split.length == 4 && split[1].equalsIgnoreCase("radius"))
+		else if ((split.length == 3 || split.length == 4) && split[1].equalsIgnoreCase("radius"))
 		{
 			if (!Config.HasPermission(player, "radius")) return true;
 
@@ -141,11 +196,14 @@ public class WBCommand implements CommandExecutor
 			try
 			{
 				radiusX = Integer.parseInt(split[2]);
-				radiusZ = Integer.parseInt(split[3]);
+				if (split.length == 4)
+					radiusZ = Integer.parseInt(split[3]);
+				else
+					radiusZ = radiusX;
 			}
 			catch(NumberFormatException ex)
 			{
-				sender.sendMessage(clrErr + "The radius values must be integers.");
+				sender.sendMessage(clrErr + "The radius value(s) must be integers.");
 				return true;
 			}
 
@@ -156,7 +214,7 @@ public class WBCommand implements CommandExecutor
 		}
 
 		// "radius" command from player, using current world
-		else if (split.length == 3 && split[0].equalsIgnoreCase("radius") && player != null)
+		else if ((split.length == 2 || split.length == 3) && split[0].equalsIgnoreCase("radius") && player != null)
 		{
 			if (!Config.HasPermission(player, "radius")) return true;
 
@@ -175,12 +233,15 @@ public class WBCommand implements CommandExecutor
 			int radiusZ;
 			try
 			{
-				radiusX = Integer.parseInt(split[2]);
+				radiusX = Integer.parseInt(split[1]);
-				radiusZ = Integer.parseInt(split[3]);
+				if (split.length == 3)
+					radiusZ = Integer.parseInt(split[2]);
+				else
+					radiusZ = radiusX;
 			}
 			catch(NumberFormatException ex)
 			{
-				sender.sendMessage(clrErr + "The radius values must be integers.");
+				sender.sendMessage(clrErr + "The radius value(s) must be integers.");
 				return true;
 			}
 
@@ -240,7 +301,7 @@ public class WBCommand implements CommandExecutor
 		{
 			if (!Config.HasPermission(player, "list")) return true;
 
-			sender.sendMessage("Default border shape for all worlds is \"" + (Config.ShapeRound() ? "elliptic" : "rectangular") + "\".");
+			sender.sendMessage("Default border shape for all worlds is \"" + Config.ShapeName() + "\".");
 
 			Set<String> list = Config.BorderDescriptions();
 
@@ -262,18 +323,18 @@ public class WBCommand implements CommandExecutor
 		{
 			if (!Config.HasPermission(player, "shape")) return true;
 
-			if (split[1].equalsIgnoreCase("rectangular"))
+			if (split[1].equalsIgnoreCase("rectangular") || split[1].equalsIgnoreCase("square"))
 				Config.setShape(false);
-			else if (split[1].equalsIgnoreCase("elliptic"))
+			else if (split[1].equalsIgnoreCase("elliptic") || split[1].equalsIgnoreCase("round"))
 				Config.setShape(true);
 			else
 			{
-				sender.sendMessage("You must specify a shape of \"elliptic\" or \"rectangular\".");
+				sender.sendMessage("You must specify a shape of \"elliptic\"/\"round\" or \"rectangular\"/\"square\".");
 				return true;
 			}
 
 			if (player != null)
-				sender.sendMessage("Default border shape for all worlds is now set to \"" + (Config.ShapeRound() ? "elliptic" : "rectangular") + "\".");
+				sender.sendMessage("Default border shape for all worlds is now set to \"" + Config.ShapeName() + "\".");
 		}
 
 		// "getmsg" command from player or console
@@ -418,16 +479,16 @@ public class WBCommand implements CommandExecutor
 			}
 
 			Boolean shape = null;
-			if (split[2].equalsIgnoreCase("rectangular"))
+			if (split[2].equalsIgnoreCase("rectangular") || split[2].equalsIgnoreCase("square"))
 				shape = false;
-			else if (split[2].equalsIgnoreCase("elliptic"))
+			else if (split[2].equalsIgnoreCase("elliptic") || split[2].equalsIgnoreCase("round"))
 				shape = true;
 
 			border.setShape(shape);
 			Config.setBorder(world, border);
 
 			if (player != null)
-				sender.sendMessage("Border shape for world \"" + world + "\" is now set to \"" + (shape == null ? "default" : (shape.booleanValue() ? "elliptic" : "rectangular")) + "\".");
+				sender.sendMessage("Border shape for world \"" + world + "\" is now set to \"" + (shape == null ? "default" : Config.ShapeName(shape.booleanValue())) + "\".");
 		}
 
 		// "wshape" command from player, using current world
@@ -444,15 +505,15 @@ public class WBCommand implements CommandExecutor
 			}
 
 			Boolean shape = null;
-			if (split[1].equalsIgnoreCase("rectangular"))
+			if (split[1].equalsIgnoreCase("rectangular") || split[1].equalsIgnoreCase("square"))
 				shape = false;
-			else if (split[1].equalsIgnoreCase("elliptic"))
+			else if (split[1].equalsIgnoreCase("elliptic") || split[1].equalsIgnoreCase("round"))
 				shape = true;
 
 			border.setShape(shape);
 			Config.setBorder(world, border);
 
-			sender.sendMessage("Border shape for world \"" + world + "\" is now set to \"" + (shape == null ? "default" : (shape.booleanValue() ? "elliptic" : "rectangular")) + "\".");
+			sender.sendMessage("Border shape for world \"" + world + "\" is now set to \"" + (shape == null ? "default" : Config.ShapeName(shape.booleanValue())) + "\".");
 		}
 
 		// "fill" command from player or console, world specified
@@ -658,32 +719,35 @@ public class WBCommand implements CommandExecutor
 			if (page == 0 || page == 1)
 			{
 				if (player != null)
-					sender.sendMessage(cmd+" set " + clrReq + "<radiusX> <radiusZ>" + clrDesc + " - set world border, centered on you.");
+					sender.sendMessage(cmd+" set " + clrReq + "<radiusX> " + clrOpt + "[radiusZ]" + clrDesc + " - set border, centered on you.");
-				sender.sendMessage(cmdW+" set " + clrReq + "<radiusX> <radiusZ> <x> <z>" + clrDesc + " - set world border.");
+				sender.sendMessage(cmdW+" set " + clrReq + "<radiusX> " + clrOpt + "[radiusZ] <x> <z>" + clrDesc + " - set border.");
-				sender.sendMessage(cmdW+" radius " + clrReq + "<radiusX> <radiusZ>" + clrDesc + " - change a border radius.");
+				sender.sendMessage(cmdW+" setcorners " + clrReq + "<x1> <z1> <x2> <z2>" + clrDesc + " - set by corners.");
+				sender.sendMessage(cmdW+" radius " + clrReq + "<radiusX> " + clrOpt + "[radiusZ]" + clrDesc + " - change radius.");
 				sender.sendMessage(cmdW+" clear" + clrDesc + " - remove border for this world.");
 				sender.sendMessage(cmd+" clear all" + clrDesc + " - remove border for all worlds.");
-				sender.sendMessage(cmd+" list" + clrDesc + " - show border information for all worlds.");
+				sender.sendMessage(cmd+" shape " + clrReq + "<elliptic|rectangular>" + clrDesc + " - set the default shape.");
-				sender.sendMessage(cmd+" shape " + clrReq + "<elliptic|rectangular>" + clrDesc + " - set the default border shape.");
+				sender.sendMessage(cmd+" shape " + clrReq + "<round|square>" + clrDesc + " - same as above.");
-				sender.sendMessage(cmd+" knockback " + clrReq + "<distance>" + clrDesc + " - how far to move the player back.");
 				if (page == 1)
 					sender.sendMessage(cmd+" 2" + clrDesc + " - view second page of commands.");
 			}
 			if (page == 0 || page == 2)
 			{
+				sender.sendMessage(cmd+" list" + clrDesc + " - show border information for all worlds.");
 				sender.sendMessage(cmdW+" fill " + clrOpt + "[freq] [pad]" + clrDesc + " - generate world out to border.");
 				sender.sendMessage(cmdW+" trim " + clrOpt + "[freq] [pad]" + clrDesc + " - trim world outside of border.");
 				sender.sendMessage(cmd+" bypass " + ((player == null) ? clrReq + "<player>" : clrOpt + "[player]") + clrOpt + " [on/off]" + clrDesc + " - let player go beyond border.");
-				sender.sendMessage(cmd+" wshape " + ((player == null) ? clrReq + "<world>" : clrOpt + "[world]") + clrReq + " <elliptic|rectangular|default>" + clrDesc + " - shape override.");
+				sender.sendMessage(cmd+" wshape " + ((player == null) ? clrReq + "<world>" : clrOpt + "[world]") + clrReq + " <elliptic|rectangular|default>" + clrDesc + " - shape override for this world.");
-				sender.sendMessage(cmd+" getmsg" + clrDesc + " - display border message.");
+				sender.sendMessage(cmd+" wshape " + ((player == null) ? clrReq + "<world>" : clrOpt + "[world]") + clrReq + " <round|square|default>" + clrDesc + " - same as above.");
-				sender.sendMessage(cmd+" setmsg " + clrReq + "<text>" + clrDesc + " - set border message.");
 				sender.sendMessage(cmd+" whoosh " + clrReq + "<on|off>" + clrDesc + " - turn knockback effect on or off.");
-				sender.sendMessage(cmd+" delay " + clrReq + "<amount>" + clrDesc + " - time between border checks.");
 				if (page == 2)
 					sender.sendMessage(cmd+" 3" + clrDesc + " - view third page of commands.");
 			}
 			if (page == 0 || page == 3)
 			{
+				sender.sendMessage(cmd+" getmsg" + clrDesc + " - display border message.");
+				sender.sendMessage(cmd+" setmsg " + clrReq + "<text>" + clrDesc + " - set border message.");
+				sender.sendMessage(cmd+" knockback " + clrReq + "<distance>" + clrDesc + " - how far to move the player back.");
+				sender.sendMessage(cmd+" delay " + clrReq + "<amount>" + clrDesc + " - time between border checks.");
 				sender.sendMessage(cmd+" reload" + clrDesc + " - re-load data from config.yml.");
 				sender.sendMessage(cmd+" dynmap " + clrReq + "<on|off>" + clrDesc + " - turn DynMap border display on or off.");
 				sender.sendMessage(cmd+" dynmapmsg " + clrReq + "<text>" + clrDesc + " - DynMap border labels will show this.");
@@ -712,20 +776,27 @@ public class WBCommand implements CommandExecutor
 		return enabled ? clrReq+"enabled" : clrErr+"disabled";
 	}
 
-	private boolean cmdSet(CommandSender sender, String world, String[] data, int offset)
+	private boolean cmdSet(CommandSender sender, String world, String[] data, int offset, boolean oneRadius)
 	{
 		int radiusX, radiusZ;
 		double x, z;
 		try
 		{
 			radiusX = Integer.parseInt(data[offset]);
-			radiusZ = Integer.parseInt(data[offset+1]);
+			if (oneRadius)
+			{
+				radiusZ = radiusX;
+				offset -= 1;
+			}
+			else
+				radiusZ = Integer.parseInt(data[offset+1]);
+
 			x = Double.parseDouble(data[offset+2]);
 			z = Double.parseDouble(data[offset+3]);
 		}
 		catch(NumberFormatException ex)
 		{
-			sender.sendMessage(clrErr + "The radius values must be integers and the x and z values must be numerical.");
+			sender.sendMessage(clrErr + "The radius value(s) must be integers and the x and z values must be numerical.");
 			return false;
 		}
 

src/plugin.yml

@@ -11,19 +11,22 @@ commands:
     aliases: [worldborder, wb]
     usage: |
            /<command> - list available commands (show help).
-           /<command> set <radiusX> <radiusY> - set world border, centered on you.
+           /<command> set <radiusX> [radiusZ] - set world border, centered on you.
-           /<command> [world] set <radiusX> <radiusZ> <x> <z> - set world border.
+           /<command> [world] set <radiusX> [radiusZ] <x> <z> - set world border.
-           /<command> [world] radius <radiusX> <radiusZ> - change world's border radius.
+           /<command> [world] setcorners <x1> <z1> <x2> <z2> - set border from corners.
+           /<command> [world] radius <radiusX> [radiusZ] - change border's radius.
            /<command> [world] clear - remove border for this world.
            /<command> clear all - remove border for all worlds.
            /<command> list - show border information for all worlds.
            /<command> shape <elliptic|rectangular> - set the default border shape.
+           /<command> shape <round|square> - same as above, backwards compatible.
            /<command> getmsg - display border message.
            /<command> setmsg <text> - set border message.
            /<command> knockback <distance> - how far to move the player back.
            /<command> whoosh <on/off> - turn knockback effect on or off.
            /<command> delay <amount> - time between border checks.
            /<command> wshape [world] <elliptic|rectangular|default> - override shape.
+           /<command> wshape [world] <round|square|default> - same as above values.
            /<command> [world] fill [freq] [pad] - generate world out to border.
            /<command> [world] trim [freq] [pad] - trim world outside of border.
            /<command> bypass [player] [on/off] - let player go beyond border.

src/readme.txt

@@ -1,42 +0,0 @@
-The things I changed (I hope I didn't forget anything)
-
-plugin.yml:
-	changed the help (<radius> --> <radiusX> <radiusZ>)
-BorderCheckTask.java:
-	nothing
-BorderData.java:
-	added variable radiusZ and renamed radius to radiusX
-	changed the "handy data for borderChecks"
-	adapted constructors to accept to radius-values
-	added set-/getRadiusZ
-	adapted toString function (it outputs "radiusX-radiusZ", I'm sure there a clearer way)
-	changed the inside-border-check procedure for the ellipse (I added a comment, explaining why I think you could remove one check)
-	changed the procedure that calculates the point inside the border the player need to be teleported to
-	adapted the equals function
-	adapted the hashCode function (not sure about this one, maybe you could improve it)
-Config.java
-	adapted the setBorder function to accept both radius-values
-	adapted config-messages (round --> elliptic...)
-	adapted the config-file-to-border function
-	adapted the save procedure
-CoordXZ.java:
-	nothing
-DynMapFeatures.java:
-	adapted the showSquareBorder/showRoundBorder
-WBCommand.java:
-	changed all the commands to accept one parameter more (you always have to enter two values)
-	changed the names of the shapes to rectangular and elliptic
-	adapted the help (<radius> --> <radiusX> <radiusZ>)
-	adapted the error messages to speak of two radius-values
-WBListener.java:
-	nothing
-WorldBorder.java:
-	nothing
-WorldFileData.java:
-	nothing
-WorldFillTask.java:
-	adapted calculation of the toFillBorder
-	changed calculation of reportTarget
-	added proposal for different method to calculate reportTarget
-WorldTrimTask.java:
-	adapted calculation of the toTrimBorder