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

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));
+        }
+    }
+    
+}