Add ItemFireball from mc-dev for diff visibility

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

@@ -0,0 +1,55 @@
+package net.minecraft.server;
+
+public class ItemFireball extends Item {
+
+    public ItemFireball(int i) {
+        super(i);
+    }
+
+    public boolean interactWith(ItemStack itemstack, EntityHuman entityhuman, World world, int i, int j, int k, int l) {
+        if (world.isStatic) {
+            return true;
+        } else {
+            if (l == 0) {
+                --j;
+            }
+
+            if (l == 1) {
+                ++j;
+            }
+
+            if (l == 2) {
+                --k;
+            }
+
+            if (l == 3) {
+                ++k;
+            }
+
+            if (l == 4) {
+                --i;
+            }
+
+            if (l == 5) {
+                ++i;
+            }
+
+            if (!entityhuman.d(i, j, k)) {
+                return false;
+            } else {
+                int i1 = world.getTypeId(i, j, k);
+
+                if (i1 == 0) {
+                    world.makeSound((double) i + 0.5D, (double) j + 0.5D, (double) k + 0.5D, "fire.ignite", 1.0F, c.nextFloat() * 0.4F + 0.8F);
+                    world.setTypeId(i, j, k, Block.FIRE.id);
+                }
+
+                if (!entityhuman.abilities.canInstantlyBuild) {
+                    --itemstack.count;
+                }
+
+                return true;
+            }
+        }
+    }
+}