Added API for manipulating map items. Thanks SpaceManiac, codename_B, sk89q and dested!

src/main/java/net/minecraft/server/ItemWorldMap.java

@@ -1,5 +1,10 @@
 package net.minecraft.server;
 
+// CraftBukkit start
+import org.bukkit.Bukkit;
+import org.bukkit.event.server.MapInitializeEvent;
+// CraftBukkit end
+
 public class ItemWorldMap extends ItemWorldMapBase {
 
     protected ItemWorldMap(int i) {
@@ -22,6 +27,11 @@ public class ItemWorldMap extends ItemWorldMapBase {
             worldmap.map = (byte) world.worldProvider.dimension;
             worldmap.a();
             world.a(s, (WorldMapBase) worldmap);
+            
+            // CraftBukkit start
+            MapInitializeEvent event = new MapInitializeEvent(worldmap.mapView);
+            Bukkit.getServer().getPluginManager().callEvent(event);
+            // CraftBukkit end
         }
 
         return worldmap;

src/main/java/net/minecraft/server/WorldMap.java

@@ -11,6 +11,7 @@ import java.util.UUID;
 import org.bukkit.Bukkit;
 import org.bukkit.craftbukkit.CraftServer;
 import org.bukkit.craftbukkit.CraftWorld;
+import org.bukkit.craftbukkit.map.CraftMapView;
 // CraftBukkit end
 
 public class WorldMap extends WorldMapBase {
@@ -26,13 +27,17 @@ public class WorldMap extends WorldMapBase {
     public List i = new ArrayList();
 
     // CraftBukkit start
+    public final CraftMapView mapView;
     private CraftServer server;
     private UUID uniqueId = null;
     // CraftBukkit end
 
     public WorldMap(String s) {
         super(s);
-        server = (CraftServer) Bukkit.getServer(); // CraftBukkit
+        // CraftBukkit start
+        mapView = new CraftMapView(this);
+        server = (CraftServer) Bukkit.getServer();
+        // CraftBukkit end
     }
 
     public void a(NBTTagCompound nbttagcompound) {

src/main/java/net/minecraft/server/WorldMapHumanTracker.java

@@ -0,0 +1,101 @@
+package net.minecraft.server;
+
+// CraftBukkit start
+import org.bukkit.map.MapCursor;
+import org.bukkit.craftbukkit.entity.CraftPlayer;
+import org.bukkit.craftbukkit.map.RenderData;
+// CraftBukkit end
+
+public class WorldMapHumanTracker {
+
+    public final EntityHuman trackee;
+    public int[] b;
+    public int[] c;
+    private int e;
+    private int f;
+    private byte[] g;
+
+    final WorldMap d;
+
+    public WorldMapHumanTracker(WorldMap worldmap, EntityHuman entityhuman) {
+        this.d = worldmap;
+        this.b = new int[128];
+        this.c = new int[128];
+        this.e = 0;
+        this.f = 0;
+        this.trackee = entityhuman;
+
+        for (int i = 0; i < this.b.length; ++i) {
+            this.b[i] = 0;
+            this.c[i] = 127;
+        }
+    }
+
+    public byte[] a(ItemStack itemstack) {
+        int i;
+        int j;
+        
+        RenderData render = this.d.mapView.render((CraftPlayer) trackee.getBukkitEntity()); // CraftBukkit
+
+        if (--this.f < 0) {
+            this.f = 4;
+            byte[] abyte = new byte[render.cursors.size() * 3 + 1]; // CraftBukkit
+
+            abyte[0] = 1;
+
+            // CraftBukkit start
+            for (i = 0; i < render.cursors.size(); ++i) {
+                MapCursor cursor = render.cursors.get(i);
+                if (!cursor.isVisible()) continue;
+                
+                byte value = (byte) (((cursor.getRawType() == 0 || cursor.getDirection() < 8 ? cursor.getDirection() : cursor.getDirection() - 1) & 15) * 16);
+                abyte[i * 3 + 1] = (byte) (value | (cursor.getRawType() != 0 && value < 0 ? 16 - cursor.getRawType() : cursor.getRawType()));
+                abyte[i * 3 + 2] = (byte) cursor.getX();
+                abyte[i * 3 + 3] = (byte) cursor.getY();
+            }
+            // CraftBukkit end
+
+            boolean flag = true;
+
+            if (this.g != null && this.g.length == abyte.length) {
+                for (j = 0; j < abyte.length; ++j) {
+                    if (abyte[j] != this.g[j]) {
+                        flag = false;
+                        break;
+                    }
+                }
+            } else {
+                flag = false;
+            }
+
+            if (!flag) {
+                this.g = abyte;
+                return abyte;
+            }
+        }
+
+        for (int k = 0; k < 10; ++k) {
+            i = this.e * 11 % 128;
+            ++this.e;
+            if (this.b[i] >= 0) {
+                j = this.c[i] - this.b[i] + 1;
+                int l = this.b[i];
+                byte[] abyte1 = new byte[j + 3];
+
+                abyte1[0] = 0;
+                abyte1[1] = (byte) i;
+                abyte1[2] = (byte) l;
+
+                for (int i1 = 0; i1 < abyte1.length - 3; ++i1) {
+                    abyte1[i1 + 3] = render.buffer[(i1 + l) * 128 + i]; // CraftBukkit
+                }
+
+                this.c[i] = -1;
+                this.b[i] = -1;
+                return abyte1;
+            }
+        }
+
+        return null;
+    }
+}

src/main/java/org/bukkit/craftbukkit/CraftServer.java

@@ -49,7 +49,12 @@ import net.minecraft.server.ServerCommand;
 import net.minecraft.server.ICommandListener;
 import net.minecraft.server.Packet;
 import net.minecraft.server.Packet3Chat;
+import net.minecraft.server.Item;
+import net.minecraft.server.ItemStack;
+import net.minecraft.server.WorldMap;
+import net.minecraft.server.WorldMapCollection;
 import org.bukkit.*;
+import org.bukkit.map.MapView;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.PluginManager;
 import org.bukkit.plugin.ServicesManager;
@@ -62,6 +67,7 @@ import org.bukkit.craftbukkit.inventory.CraftRecipe;
 import org.bukkit.craftbukkit.inventory.CraftShapedRecipe;
 import org.bukkit.craftbukkit.inventory.CraftShapelessRecipe;
 import org.bukkit.craftbukkit.command.ServerCommandListener;
+import org.bukkit.craftbukkit.map.CraftMapView;
 import org.bukkit.scheduler.BukkitWorker;
 import org.bukkit.craftbukkit.scheduler.CraftScheduler;
 import org.bukkit.craftbukkit.util.DefaultPermissions;
@@ -776,4 +782,20 @@ public final class CraftServer implements Server {
 
         return result;
     }
+
+    public CraftMapView getMap(short id) {
+        WorldMapCollection collection = console.worlds.get(0).worldMaps;
+        WorldMap worldmap = (WorldMap) collection.a(WorldMap.class, "map_" + id);
+        if (worldmap == null) {
+            return null;
+        }
+        return worldmap.mapView;
+    }
+
+    public CraftMapView createMap(World world) {
+        ItemStack stack = new ItemStack(Item.MAP, 1, -1);
+        WorldMap worldmap = Item.MAP.a(stack, ((CraftWorld) world).getHandle());
+        return worldmap.mapView;
+    }
+
 }

src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java

@@ -4,6 +4,7 @@ import java.net.InetSocketAddress;
 import java.net.SocketAddress;
 import net.minecraft.server.EntityHuman;
 import net.minecraft.server.EntityPlayer;
+import net.minecraft.server.Packet131;
 import net.minecraft.server.Packet200Statistic;
 import net.minecraft.server.Packet3Chat;
 import net.minecraft.server.Packet51MapChunk;
@@ -21,8 +22,11 @@ import org.bukkit.Note;
 import org.bukkit.Statistic;
 import org.bukkit.craftbukkit.CraftServer;
 import org.bukkit.craftbukkit.CraftWorld;
+import org.bukkit.craftbukkit.map.CraftMapView;
+import org.bukkit.craftbukkit.map.RenderData;
 import org.bukkit.entity.Player;
 import org.bukkit.event.player.PlayerTeleportEvent;
+import org.bukkit.map.MapView;
 
 public class CraftPlayer extends CraftHumanEntity implements Player {
     public CraftPlayer(CraftServer server, EntityPlayer entity) {
@@ -205,6 +209,19 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         return true;
     }
 
+    public void sendMap(MapView map) {
+        RenderData data = ((CraftMapView) map).render(this);
+        for (int x = 0; x < 128; ++x) {
+            byte[] bytes = new byte[131];
+            bytes[1] = (byte) x;
+            for (int y = 0; y < 128; ++y) {
+                bytes[y + 3] = data.buffer[y * 128 + x];
+            }
+            Packet131 packet = new Packet131((short) Material.MAP.getId(), map.getId(), bytes);
+            getHandle().netServerHandler.sendPacket(packet);
+        }
+    }
+
     @Override
     public boolean teleport(Location location) {
         // From = Players current Location

src/main/java/org/bukkit/craftbukkit/map/CraftMapCanvas.java

@@ -0,0 +1,107 @@
+package org.bukkit.craftbukkit.map;
+
+import java.awt.Image;
+import java.util.Arrays;
+import org.bukkit.map.MapCanvas;
+import org.bukkit.map.MapCursorCollection;
+import org.bukkit.map.MapFont;
+import org.bukkit.map.MapFont.CharacterSprite;
+import org.bukkit.map.MapPalette;
+
+public class CraftMapCanvas implements MapCanvas {
+    
+    private final byte[] buffer = new byte[128 * 128];
+    private final CraftMapView mapView;
+    private byte[] base;
+    private MapCursorCollection cursors = new MapCursorCollection();
+    
+    protected CraftMapCanvas(CraftMapView mapView) {
+        this.mapView = mapView;
+        Arrays.fill(buffer, (byte) -1);
+    }
+
+    public CraftMapView getMapView() {
+        return mapView;
+    }
+
+    public MapCursorCollection getCursors() {
+        return cursors;
+    }
+
+    public void setCursors(MapCursorCollection cursors) {
+        this.cursors = cursors;
+    }
+
+    public void setPixel(int x, int y, byte color) {
+        if (x < 0 || y < 0 || x >= 128 || y >= 128) return;
+        if (buffer[y * 128 + x] != color) {
+            buffer[y * 128 + x] = color;
+            mapView.worldMap.a(x, y, y);
+        }
+    }
+
+    public byte getPixel(int x, int y) {
+        if (x < 0 || y < 0 || x >= 128 || y >= 128) return 0;
+        return buffer[y * 128 + x];
+    }
+
+    public byte getBasePixel(int x, int y) {
+        if (x < 0 || y < 0 || x >= 128 || y >= 128) return 0;
+        return base[y * 128 + x];
+    }
+    
+    protected void setBase(byte[] base) {
+        this.base = base;
+    }
+    
+    protected byte[] getBuffer() {
+        return buffer;
+    }
+
+    public void drawImage(int x, int y, Image image) {
+        byte[] bytes = MapPalette.imageToBytes(image);
+        for (int x2 = 0; x2 < image.getWidth(null); ++x2) {
+            for (int y2 = 0; y2 < image.getHeight(null); ++y2) {
+                setPixel(x + x2, y + y2, bytes[y2 * image.getWidth(null) + x2]);
+            }
+        }
+    }
+
+    public void drawText(int x, int y, MapFont font, String text) {
+        int xStart = x;
+        byte color = MapPalette.DARK_GRAY;
+        if (!font.isValid(text)) {
+            throw new IllegalArgumentException("text contains invalid characters");
+        }
+        
+        for (int i = 0; i < text.length(); ++i) {
+            char ch = text.charAt(i);
+            if (ch == '\n') {
+                x = xStart;
+                y += font.getHeight() + 1;
+                continue;
+            } else if (ch == '\u00A7') {
+                int j = text.indexOf(';', i);
+                if (j >= 0) {
+                    try {
+                        color = Byte.parseByte(text.substring(i + 1, j));
+                        i = j;
+                        continue;
+                    }
+                    catch (NumberFormatException ex) {}
+                }
+            }
+            
+            CharacterSprite sprite = font.getChar(text.charAt(i));
+            for (int r = 0; r < font.getHeight(); ++r) {
+                for (int c = 0; c < sprite.getWidth(); ++c) {
+                    if (sprite.get(r, c)) {
+                        setPixel(x + c, y + r, color);
+                    }
+                }
+            }
+            x += sprite.getWidth() + 1;
+        }
+    }
+    
+}

src/main/java/org/bukkit/craftbukkit/map/CraftMapRenderer.java

@@ -0,0 +1,43 @@
+package org.bukkit.craftbukkit.map;
+
+import net.minecraft.server.WorldMap;
+import net.minecraft.server.WorldMapOrienter;
+
+import org.bukkit.entity.Player;
+import org.bukkit.map.MapCanvas;
+import org.bukkit.map.MapRenderer;
+import org.bukkit.map.MapView;
+import org.bukkit.map.MapCursorCollection;
+
+public class CraftMapRenderer extends MapRenderer {
+    
+    private final CraftMapView mapView;
+    private final WorldMap worldMap;
+
+    public CraftMapRenderer(CraftMapView mapView, WorldMap worldMap) {
+        super(false);
+        this.mapView = mapView;
+        this.worldMap = worldMap;
+    }
+
+    @Override
+    public void render(MapView map, MapCanvas canvas, Player player) {
+        // Map
+        for (int x = 0; x < 128; ++x) {
+            for (int y = 0; y < 128; ++y) {
+                canvas.setPixel(x, y, worldMap.f[y * 128 + x]);
+            }
+        }
+        
+        // Cursors
+        MapCursorCollection cursors = canvas.getCursors();
+        while (cursors.size() > 0) {
+            cursors.removeCursor(cursors.getCursor(0));
+        }
+        for (int i = 0; i < worldMap.i.size(); ++i) {
+            WorldMapOrienter orienter = (WorldMapOrienter) worldMap.i.get(i);
+            cursors.addCursor(orienter.b, orienter.c, (byte)(orienter.d & 15), (byte)(orienter.a));
+        }
+    }
+    
+}

src/main/java/org/bukkit/craftbukkit/map/CraftMapView.java

@@ -0,0 +1,161 @@
+package org.bukkit.craftbukkit.map;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import net.minecraft.server.WorldMap;
+
+import org.bukkit.Bukkit;
+import org.bukkit.World;
+import org.bukkit.craftbukkit.CraftWorld;
+import org.bukkit.craftbukkit.entity.CraftPlayer;
+import org.bukkit.map.MapRenderer;
+import org.bukkit.map.MapView;
+
+public final class CraftMapView implements MapView {
+    
+    private final Map<CraftPlayer, RenderData> renderCache = new HashMap<CraftPlayer, RenderData>();
+    private final List<MapRenderer> renderers = new ArrayList<MapRenderer>();
+    private final Map<MapRenderer, Map<CraftPlayer, CraftMapCanvas>> canvases = new HashMap<MapRenderer, Map<CraftPlayer, CraftMapCanvas>>();
+    protected final WorldMap worldMap;
+    
+    public CraftMapView(WorldMap worldMap) {
+        this.worldMap = worldMap;
+        addRenderer(new CraftMapRenderer(this, worldMap));
+    }
+
+    public short getId() {
+        String text = worldMap.a;
+        if (text.startsWith("map_")) {
+            try {
+                return Short.parseShort(text.substring("map_".length()));
+            }
+            catch (NumberFormatException ex) {
+                throw new IllegalStateException("Map has non-numeric ID");
+            }
+        } else {
+            throw new IllegalStateException("Map has invalid ID");
+        }
+    }
+
+    public boolean isVirtual() {
+        return renderers.size() > 0 && !(renderers.get(0) instanceof CraftMapRenderer);
+    }
+
+    public Scale getScale() {
+        return Scale.valueOf(worldMap.e);
+    }
+
+    public void setScale(Scale scale) {
+        worldMap.e = scale.getValue();
+    }
+    
+    public World getWorld() {
+        byte dimension = worldMap.map;
+        for (World world : Bukkit.getServer().getWorlds()) {
+            if (((CraftWorld) world).getHandle().dimension == dimension) {
+                return world;
+            }
+        }
+        return null;
+    }
+
+    public void setWorld(World world) {
+        worldMap.map = (byte) ((CraftWorld) world).getHandle().dimension;
+    }
+
+    public int getCenterX() {
+        return worldMap.b;
+    }
+
+    public int getCenterZ() {
+        return worldMap.c;
+    }
+
+    public void setCenterX(int x) {
+        worldMap.b = x;
+    }
+
+    public void setCenterZ(int z) {
+        worldMap.c = z;
+    }
+
+    public List<MapRenderer> getRenderers() {
+        return new ArrayList<MapRenderer>(renderers);
+    }
+
+    public void addRenderer(MapRenderer renderer) {
+        if (!renderers.contains(renderer)) {
+            renderers.add(renderer);
+            canvases.put(renderer, new HashMap<CraftPlayer, CraftMapCanvas>());
+            renderer.initialize(this);
+        }
+    }
+
+    public boolean removeRenderer(MapRenderer renderer) {
+        if (renderers.contains(renderer)) {
+            renderers.remove(renderer);
+            for (Map.Entry<CraftPlayer, CraftMapCanvas> entry : canvases.get(renderer).entrySet()) {
+                for (int x = 0; x < 128; ++x) {
+                    for (int y = 0; y < 128; ++y) {
+                        entry.getValue().setPixel(x, y, (byte) -1);
+                    }
+                }
+            }
+            canvases.remove(renderer);
+            return true;
+        } else {
+            return false;
+        }
+    }
+    
+    private boolean isContextual() {
+        for (MapRenderer renderer : renderers) {
+            if (renderer.isContextual()) return true;
+        }
+        return false;
+    }
+    
+    public RenderData render(CraftPlayer player) {
+        boolean context = isContextual();
+        RenderData render = renderCache.get(context ? player : null);
+        
+        if (render == null) {
+            render = new RenderData();
+            renderCache.put(context ? player : null, render);
+        }
+        
+        if (context && renderCache.containsKey(null)) {
+            renderCache.remove(null);
+        }
+        
+        Arrays.fill(render.buffer, (byte) 0);
+        render.cursors.clear();
+        
+        for (MapRenderer renderer : renderers) {
+            CraftMapCanvas canvas = canvases.get(renderer).get(renderer.isContextual() ? player : null);
+            if (canvas == null) {
+                canvas = new CraftMapCanvas(this);
+                canvases.get(renderer).put(renderer.isContextual() ? player : null, canvas);
+            }
+            
+            canvas.setBase(render.buffer);
+            renderer.render(this, canvas, player);
+            
+            byte[] buf = canvas.getBuffer();
+            for (int i = 0; i < buf.length; ++i) {
+                if (buf[i] >= 0) render.buffer[i] = buf[i];
+            }
+            
+            for (int i = 0; i < canvas.getCursors().size(); ++i) {
+                render.cursors.add(canvas.getCursors().getCursor(i));
+            }
+        }
+        
+        return render;
+    }
+    
+}

src/main/java/org/bukkit/craftbukkit/map/RenderData.java

@@ -0,0 +1,16 @@
+package org.bukkit.craftbukkit.map;
+
+import java.util.ArrayList;
+import org.bukkit.map.MapCursor;
+
+public class RenderData {
+    
+    public final byte[] buffer;
+    public final ArrayList<MapCursor> cursors;
+    
+    public RenderData() {
+        this.buffer = new byte[128 * 128];
+        this.cursors = new ArrayList<MapCursor>();
+    }
+    
+}