Add DispenseBehaviorFireworks and EntityFireworks for diff visibility

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

@@ -0,0 +1,26 @@
+package net.minecraft.server;
+
+public class DispenseBehaviorFireworks extends DispenseBehaviorItem {
+
+    final MinecraftServer b;
+
+    public DispenseBehaviorFireworks(MinecraftServer minecraftserver) {
+        this.b = minecraftserver;
+    }
+
+    public ItemStack b(ISourceBlock isourceblock, ItemStack itemstack) {
+        EnumFacing enumfacing = EnumFacing.a(isourceblock.h());
+        double d0 = isourceblock.getX() + (double) enumfacing.c();
+        double d1 = (double) ((float) isourceblock.getBlockY() + 0.2F);
+        double d2 = isourceblock.getZ() + (double) enumfacing.e();
+        EntityFireworks entityfireworks = new EntityFireworks(isourceblock.k(), d0, d1, d2, itemstack);
+
+        isourceblock.k().addEntity(entityfireworks);
+        itemstack.a(1);
+        return itemstack;
+    }
+
+    protected void a(ISourceBlock isourceblock) {
+        isourceblock.k().triggerEffect(1002, isourceblock.getBlockX(), isourceblock.getBlockY(), isourceblock.getBlockZ(), 0);
+    }
+}

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

@@ -0,0 +1,121 @@
+package net.minecraft.server;
+
+public class EntityFireworks extends Entity {
+
+    private int a;
+    private int b;
+
+    public EntityFireworks(World world) {
+        super(world);
+        this.a(0.25F, 0.25F);
+    }
+
+    protected void a() {
+        this.datawatcher.a(8, new ItemStack(0, 0, 0));
+    }
+
+    public EntityFireworks(World world, double d0, double d1, double d2, ItemStack itemstack) {
+        super(world);
+        this.a = 0;
+        this.a(0.25F, 0.25F);
+        this.setPosition(d0, d1, d2);
+        this.height = 0.0F;
+        int i = 1;
+
+        if (itemstack != null && itemstack.hasTag()) {
+            this.datawatcher.watch(8, itemstack);
+            NBTTagCompound nbttagcompound = itemstack.getTag();
+            NBTTagCompound nbttagcompound1 = nbttagcompound.getCompound("Fireworks");
+
+            if (nbttagcompound1 != null) {
+                i += nbttagcompound1.getByte("Flight");
+            }
+        }
+
+        this.motX = this.random.nextGaussian() * 0.001D;
+        this.motZ = this.random.nextGaussian() * 0.001D;
+        this.motY = 0.05D;
+        this.b = 10 * i + this.random.nextInt(6) + this.random.nextInt(7);
+    }
+
+    public void j_() {
+        this.T = this.locX;
+        this.U = this.locY;
+        this.V = this.locZ;
+        super.j_();
+        this.motX *= 1.15D;
+        this.motZ *= 1.15D;
+        this.motY += 0.04D;
+        this.move(this.motX, this.motY, this.motZ);
+        float f = MathHelper.sqrt(this.motX * this.motX + this.motZ * this.motZ);
+
+        this.yaw = (float) (Math.atan2(this.motX, this.motZ) * 180.0D / 3.1415927410125732D);
+
+        for (this.pitch = (float) (Math.atan2(this.motY, (double) f) * 180.0D / 3.1415927410125732D); this.pitch - this.lastPitch < -180.0F; this.lastPitch -= 360.0F) {
+            ;
+        }
+
+        while (this.pitch - this.lastPitch >= 180.0F) {
+            this.lastPitch += 360.0F;
+        }
+
+        while (this.yaw - this.lastYaw < -180.0F) {
+            this.lastYaw -= 360.0F;
+        }
+
+        while (this.yaw - this.lastYaw >= 180.0F) {
+            this.lastYaw += 360.0F;
+        }
+
+        this.pitch = this.lastPitch + (this.pitch - this.lastPitch) * 0.2F;
+        this.yaw = this.lastYaw + (this.yaw - this.lastYaw) * 0.2F;
+        if (this.a == 0) {
+            this.world.makeSound(this, "fireworks.launch", 3.0F, 1.0F);
+        }
+
+        ++this.a;
+        if (this.world.isStatic && this.a % 2 < 2) {
+            this.world.addParticle("fireworksSpark", this.locX, this.locY - 0.3D, this.locZ, this.random.nextGaussian() * 0.05D, -this.motY * 0.5D, this.random.nextGaussian() * 0.05D);
+        }
+
+        if (!this.world.isStatic && this.a > this.b) {
+            this.world.broadcastEntityEffect(this, (byte) 17);
+            this.die();
+        }
+    }
+
+    public void b(NBTTagCompound nbttagcompound) {
+        nbttagcompound.setInt("Life", this.a);
+        nbttagcompound.setInt("LifeTime", this.b);
+        ItemStack itemstack = this.datawatcher.f(8);
+
+        if (itemstack != null) {
+            NBTTagCompound nbttagcompound1 = new NBTTagCompound();
+
+            itemstack.save(nbttagcompound1);
+            nbttagcompound.setCompound("FireworksItem", nbttagcompound1);
+        }
+    }
+
+    public void a(NBTTagCompound nbttagcompound) {
+        this.a = nbttagcompound.getInt("Life");
+        this.b = nbttagcompound.getInt("LifeTime");
+        NBTTagCompound nbttagcompound1 = nbttagcompound.getCompound("FireworksItem");
+
+        if (nbttagcompound1 != null) {
+            ItemStack itemstack = ItemStack.a(nbttagcompound1);
+
+            if (itemstack != null) {
+                this.datawatcher.watch(8, itemstack);
+            }
+        }
+    }
+
+    public float c(float f) {
+        return super.c(f);
+    }
+
+    public boolean aq() {
+        return false;
+    }
+}