Added PlayerFish event.

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

@@ -0,0 +1,38 @@
+package net.minecraft.server;
+
+import org.bukkit.event.player.PlayerFishEvent; // CraftBukkit
+
+public class ItemFishingRod extends Item {
+
+    public ItemFishingRod(int i) {
+        super(i);
+        this.d(64);
+        this.c(1);
+    }
+
+    public ItemStack a(ItemStack itemstack, World world, EntityHuman entityhuman) {
+        if (entityhuman.hookedFish != null) {
+            int i = entityhuman.hookedFish.h();
+
+            itemstack.damage(i, entityhuman);
+            entityhuman.w();
+        } else {
+            // CraftBukkit start
+            PlayerFishEvent playerFishEvent = new PlayerFishEvent((org.bukkit.entity.Player) entityhuman.getBukkitEntity(), null,PlayerFishEvent.State.FISHING);
+            world.getServer().getPluginManager().callEvent(playerFishEvent);
+
+            if (playerFishEvent.isCancelled()) {
+                return itemstack;
+            }
+            // CraftBukkit end
+            world.makeSound(entityhuman, "random.bow", 0.5F, 0.4F / (b.nextFloat() * 0.4F + 0.8F));
+            if (!world.isStatic) {
+                world.addEntity(new EntityFish(world, entityhuman));
+            }
+
+            entityhuman.w();
+        }
+
+        return itemstack;
+    }
+}