Make A Chicken Always Flap Its Wings

Alright, so I am making a custom entity called a DisplayChicken (for those display things you would see on Mineplex) and I want to make it always flap its wings. I think I would use a runnable for this, but I am not sure how to make the flapping motion. How would I do such a thing? Also, how would I make it produce a custom sound? Thanks!!
EDIT: Does PathfindergoalFloat make the entity jump?

Code:java

import bungeecookie.flappybirds.classes.ClassDisplay;
import net.minecraft.server.v1_7_R3.*;
 
import java.lang.reflect.Field;
import java.util.List;
 
public class DisplayChicken extends EntityChicken {
 
private ClassDisplay display;
 
public DisplayChicken(World world, ClassDisplay display){
super(world);
List goalB = (List)getPrivateField("b", PathfinderGoalSelector.class, goalSelector); goalB.clear();
List goalC = (List)getPrivateField("c", PathfinderGoalSelector.class, goalSelector); goalC.clear();
List targetB = (List)getPrivateField("b", PathfinderGoalSelector.class, targetSelector); targetB.clear();
List targetC = (List)getPrivateField("c", PathfinderGoalSelector.class, targetSelector); targetC.clear();
this.display = display;
this.goalSelector.a(0, new PathfinderGoalFloat(this));
this.goalSelector.a(6, new PathfinderGoalLookAtPlayer(this, EntityHuman.class, 6.0F));
this.goalSelector.a(7, new PathfinderGoalRandomLookaround(this));
}
 
public ClassDisplay getDisplay(){
return display;
}
 
public static Object getPrivateField(String fieldName, Class clazz, Object object){
Field field;
Object o = null;
try{
field = clazz.getDeclaredField(fieldName);
field.setAccessible(true);
o = field.get(object);
}
catch(NoSuchFieldException e){
e.printStackTrace();
}
catch(IllegalAccessException e){
e.printStackTrace();
}
return o;
}
}
 

 

About the flapping part. My Idea would be to set it like half a block in the air or so as they flap if they are in the air. There's probably an NMS way to do it without setting it constantly in the air

 

I would like the NMS way to do it please
Also, how would you prevent the entity from being pushed?

 

I think it would be the Navigation & ControllerJump that handle the jumping BungeeTheCookie

 

There are no ControllerJump or Navigation.java classes in net.minecraft.server (Unless I am just really that noobish with NMS and it is a field

fireblast709
But does PathfindergoalFloat make the entity jump?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

BungeeTheCookie my decompiler disagreed :3. Regarding the second post, yes.

 

Navigation & ControllerJump

 

:3 Ok, I should remove that Entity Attribute. Lemme look into the pathfinderfloatclass and see if that has anything to do with it.
L33m4n123 Thanks!

L33m4n123 fireblast709
I only found a bunch of letters, but I think the flapping of the wings would be found inside the EntityChicken class or a class that is referred to in EntityChicken, since wings flapping is something only used with EntityChicken.
EDIT: I think this would be more solvable, preventing the entity from being pushed?

L33m4n123 fireblast709
Alright, I think I found the code that does this, could be completely wrong

Code:

public void e() {
        // CraftBukkit start
        if (this.bZ()) { // should be isChickenJockey
            this.persistent = !this.isTypeNotPersistent();
        }
        // CraftBukkit end
        super.e();
        this.bs = this.bp;
        this.br = this.bq;
        this.bq = (float) ((double) this.bq + (double) (this.onGround ? -1 : 4) * 0.3D);
        if (this.bq < 0.0F) {
            this.bq = 0.0F;
        }
 
        if (this.bq > 1.0F) {
            this.bq = 1.0F;
        }
 
        if (!this.onGround && this.bt < 1.0F) {
            this.bt = 1.0F;
        }
 
        this.bt = (float) ((double) this.bt * 0.9D);
        if (!this.onGround && this.motY < 0.0D) {
            this.motY *= 0.6D;
        }
 
        this.bp += this.bt * 2.0F;
        if (!this.world.isStatic && !this.isBaby() && !this.bZ() && --this.bu <= 0) {
            this.makeSound("mob.chicken.plop", 1.0F, (this.random.nextFloat() - this.random.nextFloat()) * 0.2F + 1.0F);
            this.a(Items.EGG, 1);
            this.bu = this.random.nextInt(6000) + 6000;
        }
    }

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Yea was looking at this part of the code too. However about the flapping nothing directly. just that motY != 0

And about pushable. look at this thread and see if it helps abit:
http://forums.bukkit.org/threads/making-custom-entity-unpushable.275989/

 

BungeeTheCookie Doesn't seem that you can trigger the flapping server-side. Also, to prevent the entity from being pushed, you need to override some NMS methods as seen in the last thread this was discussed.

 

L33m4n123 fireblast709
How is the flapping not triggered server-side? Doesn't the sever tell the client to cause the chicken to flap its wings when the chicken is in the air? Otherwise, would running a BukkitRunnable of location.add(0, 0.0003D, 0)work?
Also, thanks for the thread about unpushability!

 

BungeeTheCookie I'm not entirely sure since I don't know when the client sees it as flapping . Your best bet would be playing around with it, I guess.

 

I dunno where to start

 

Well. Not played too much arround with nms but yea. I think keeping it in the air should be a good start

 

I'll follow this thread mostly out of interest on the coding part of it. If you get it to work, don't forget to share BungeeTheCookie

 

fireblast709 L33m4n123
Well, I solved my unpushable thing. Thank you so much for that!

L33m4n123 Alright, that's a good start! Hopefully it doesn't look too glitchy, or lag the server too much. RAFA_GATO_FOFO Don't worry, I will

fireblast709 L33m4n123
My client crashed.

The Crash Report:

PHP:

[17:35:32 INFO]: Client> [17:35:32] [Client thread/FATAL]: Unreported exception thrown!
[17:35:32 INFO]: Client> java.lang.NullPointerException
[17:35:32 INFO]: Client>    at net.minecraft.client.network.NetHandlerPlayClient.func_147281_a(NetHandlerPlayClient.java:730) ~[biv.class:?]
[17:35:32 INFO]: Client>    at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:97) ~[fq.class:?]
[17:35:32 INFO]: Client>    at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:15) ~[fq.class:?]
[17:35:32 INFO]: Client>    at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:197) ~[ef.class:?]
[17:35:32 INFO]: Client>    at net.minecraft.client.multiplayer.PlayerControllerMP.func_78765_e(PlayerControllerMP.java:273) ~[biy.class:?]
[17:35:32 INFO]: Client>    at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1541) ~[azd.class:?]
[17:35:32 INFO]: Client>    at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:916) ~[azd.class:?]
[17:35:32 INFO]: Client>    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:835) [azd.class:?]
[17:35:32 INFO]: Client>    at net.minecraft.client.main.Main.main(SourceFile:103) [Main.class:?]
[17:35:32 INFO]: Client>    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0]
[17:35:32 INFO]: Client>    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0]
[17:35:32 INFO]: Client>    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0]
[17:35:32 INFO]: Client>    at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0]
[17:35:32 INFO]: Client>    at net.minecraft.launchwrapper.Launch.launch(Launch.java:134) [launchwrapper-1.9.jar:?]
[17:35:32 INFO]: Client>    at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?]
[17:35:32 INFO]: Client> ---- Minecraft Crash Report ----
[17:35:32 INFO]: Client> // Ooh. Shiny.
[17:35:32 INFO]: Client>
[17:35:32 INFO]: Client> Time: 6/6/14 5:35 PM
[17:35:32 INFO]: Client> Description: Unexpected error
[17:35:32 INFO]: Client>
[17:35:32 INFO]: Client> java.lang.NullPointerException: Unexpected error
[17:35:32 INFO]: Client>    at net.minecraft.client.network.NetHandlerPlayClient.func_147281_a(NetHandlerPlayClient.java:730)
[17:35:32 INFO]: Client>    at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:97)
[17:35:32 INFO]: Client>    at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:15)
[17:35:32 INFO]: Client>    at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:197)
[17:35:32 INFO]: Client>    at net.minecraft.client.multiplayer.PlayerControllerMP.func_78765_e(PlayerControllerMP.java:273)
[17:35:32 INFO]: Client>    at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1541)
[17:35:32 INFO]: Client>    at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:916)
[17:35:32 INFO]: Client>    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:835)
[17:35:32 INFO]: Client>    at net.minecraft.client.main.Main.main(SourceFile:103)
[17:35:32 INFO]: Client>    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[17:35:32 INFO]: Client>    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[17:35:32 INFO]: Client>    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[17:35:32 INFO]: Client>    at java.lang.reflect.Method.invoke(Unknown Source)
[17:35:32 INFO]: Client>    at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)
[17:35:32 INFO]: Client>    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
[17:35:32 INFO]: Client>
[17:35:32 INFO]: Client>
[17:35:32 INFO]: Client> A detailed walkthrough of the error, its code path and all known details is as follows:
[17:35:32 INFO]: Client> ---------------------------------------------------------------------------------------
[17:35:32 INFO]: Client>
[17:35:32 INFO]: Client> -- Head --
[17:35:32 INFO]: Client> Stacktrace:
[17:35:32 INFO]: Client>    at net.minecraft.client.network.NetHandlerPlayClient.func_147281_a(NetHandlerPlayClient.java:730)
[17:35:32 INFO]: Client>    at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:97)
[17:35:32 INFO]: Client>    at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:15)
[17:35:32 INFO]: Client>    at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:197)
[17:35:32 INFO]: Client>    at net.minecraft.client.multiplayer.PlayerControllerMP.func_78765_e(PlayerControllerMP.java:273)
[17:35:32 INFO]: Client>
[17:35:32 INFO]: Client> -- Affected level --
[17:35:32 INFO]: Client> Details:
[17:35:32 INFO]: Client>    Level name: MpServer
[17:35:32 INFO]: Client>    All players: 1 total; [EntityClientPlayerMP['Bungeecookie'/6256, l='MpServer', x=-172.80, y=131.12, z=-679.31]]
[17:35:32 INFO]: Client>    Chunk stats: MultiplayerChunkCache: 441, 441
[17:35:32 INFO]: Client>    Level seed: 0
[17:35:32 INFO]: Client>    Level generator: ID 00 - default, ver 1. Features enabled: false
[17:35:32 INFO]: Client>    Level generator options:
[17:35:32 INFO]: Client>    Level spawn location: World: (-418,106,-292), Chunk: (at 14,6,12 in -27,-19; contains blocks -432,0,-304 to -417,255,-289), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
[17:35:32 INFO]: Client>    Level time: 6224605 game time, 778101 day time
[17:35:32 INFO]: Client>    Level dimension: 0
[17:35:32 INFO]: Client>    Level storage version: 0x00000 - Unknown?
[17:35:32 INFO]: Client>    Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
[17:35:32 INFO]: Client>    Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
[17:35:32 INFO]: Client>    Forced entities: 34 total; [EntitySheep['Sheep'/8469, l='MpServer', x=-214.16, y=71.00, z=-727.78], EntitySheep['Sheep'/8472, l='MpServer', x=-209.16, y=66.00, z=-723.13], EntitySheep['Sheep'/8475, l='MpServer', x=-194.50, y=71.00, z=-727.50], EntitySheep['Sheep'/8476, l='MpServer', x=-183.97, y=69.00, z=-713.03], EntityChicken['Chicken'/8477, l='MpServer', x=-189.53, y=68.00, z=-723.53], EntityChicken['Chicken'/8478, l='MpServer', x=-182.69, y=69.00, z=-725.81], EntityChicken['Chicken'/8479, l='MpServer', x=-185.63, y=69.00, z=-723.41], EntityChicken['Chicken'/8480, l='MpServer', x=-207.47, y=65.00, z=-726.56], EntityCreeper['Creeper'/11040, l='MpServer', x=-159.50, y=38.00, z=-659.50], EntityMinecartChest['entity.MinecartChest.name'/8481, l='MpServer', x=-218.50, y=29.50, z=-743.50], EntitySheep['Sheep'/8482, l='MpServer', x=-152.13, y=69.00, z=-691.38], EntitySheep['Sheep'/8483, l='MpServer', x=-167.75, y=71.00, z=-690.63], EntitySheep['Sheep'/8484, l='MpServer', x=-155.84, y=72.00, z=-699.88], EntitySheep['Sheep'/8485, l='MpServer', x=-174.50, y=71.00, z=-685.28], EntitySpider['Spider'/11304, l='MpServer', x=-147.50, y=68.00, z=-687.50], EntityZombie['Zombie'/11317, l='MpServer', x=-187.52, y=69.00, z=-689.70], EntitySkeleton['Skeleton'/10322, l='MpServer', x=-214.50, y=42.00, z=-689.50], EntityCreeper['Creeper'/10323, l='MpServer', x=-163.50, y=36.00, z=-659.50], EntityClientPlayerMP['Bungeecookie'/6256, l='MpServer', x=-172.80, y=131.12, z=-679.31], EntitySkeleton['Skeleton'/10075, l='MpServer', x=-200.69, y=33.00, z=-673.22], EntityZombie['Zombie'/9819, l='MpServer', x=-164.50, y=67.00, z=-667.50], EntitySkeleton['Skeleton'/10603, l='MpServer', x=-173.75, y=36.00, z=-660.31], EntityCreeper['Creeper'/10097, l='MpServer', x=-186.50, y=31.00, z=-660.50], EntityCreeper['Creeper'/10098, l='MpServer', x=-183.50, y=31.00, z=-662.50], EntityCreeper['Creeper'/10618, l='MpServer', x=-201.50, y=16.00, z=-646.50], EntityZombie['Zombie'/10881, l='MpServer', x=-129.50, y=67.00, z=-644.50], EntityItem['item.tile.sapling.spruce'/10899, l='MpServer', x=-147.59, y=66.13, z=-672.13], EntityItem['item.tile.flower2.poppy'/10387, l='MpServer', x=-143.88, y=67.13, z=-663.88], EntityCreeper['Creeper'/10647, l='MpServer', x=-183.50, y=31.00, z=-660.50], EntityCreeper['Creeper'/10648, l='MpServer', x=-185.50, y=31.00, z=-663.50], EntityCreeper['Creeper'/11427, l='MpServer', x=-137.50, y=26.00, z=-664.50], EntityCreeper['Creeper'/9912, l='MpServer', x=-213.22, y=38.00, z=-726.69], EntitySpider['Spider'/10454, l='MpServer', x=-216.78, y=39.00, z=-703.06], EntitySkeleton['Skeleton'/10478, l='MpServer', x=-210.50, y=30.00, z=-646.50]]
[17:35:32 INFO]: Client>    Retry entities: 0 total; []
[17:35:32 INFO]: Client> Stacktrace:
[17:35:32 INFO]: Client>    at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:368)
[17:35:32 INFO]: Client>    at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2382)
[17:35:32 INFO]: Client>    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:864)
[17:35:32 INFO]: Client>    at net.minecraft.client.main.Main.main(SourceFile:103)
[17:35:32 INFO]: Client>    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[17:35:32 INFO]: Client>    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[17:35:32 INFO]: Client>    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[17:35:32 INFO]: Client>    at java.lang.reflect.Method.invoke(Unknown Source)
[17:35:32 INFO]: Client>    at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)
[17:35:32 INFO]: Client>    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)


The Entity Class:

Code:java

import net.minecraft.server.v1_7_R3.*;
import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.craftbukkit.v1_7_R3.CraftWorld;
import org.bukkit.scheduler.BukkitRunnable;
 
import java.lang.reflect.Field;
import java.util.List;
 
public class DisplayChicken extends EntityChicken {
 
private ClassDisplay display;
 
public DisplayChicken(World world, ClassDisplay display){
super(world);
List goalB = (List)getPrivateField("b", PathfinderGoalSelector.class, goalSelector); goalB.clear();
List goalC = (List)getPrivateField("c", PathfinderGoalSelector.class, goalSelector); goalC.clear();
List targetB = (List)getPrivateField("b", PathfinderGoalSelector.class, targetSelector); targetB.clear();
List targetC = (List)getPrivateField("c", PathfinderGoalSelector.class, targetSelector); targetC.clear();
this.display = display;
this.goalSelector.a(6, new PathfinderGoalLookAtPlayer(this, EntityHuman.class, 6.0F));
this.goalSelector.a(7, new PathfinderGoalRandomLookaround(this));
this.fireProof = true;
}
 
public ClassDisplay getDisplay(){
return display;
}
 
public static Object getPrivateField(String fieldName, Class clazz, Object object){
Field field;
Object o = null;
try{
field = clazz.getDeclaredField(fieldName);
field.setAccessible(true);
o = field.get(object);
}
catch(NoSuchFieldException e){
e.printStackTrace();
}
catch(IllegalAccessException e){
e.printStackTrace();
}
return o;
}
 
@Override
protected void aC(){
super.aC();
this.getAttributeInstance(GenericAttributes.a).setValue(100000.0D);
this.getAttributeInstance(GenericAttributes.b).setValue(0.000D);
this.getAttributeInstance(GenericAttributes.c).setValue(100000.D);
this.getAttributeInstance(GenericAttributes.d).setValue(0.000D);
}
 
@Override
public void collide(Entity entity){
 
}
 
@Override
public void g(double d0, double d1, double d2){
 
}
 
public void spawn(final Location l){
setLocation(l.getX(), l.getY(), l.getZ(), 0F, 0F);
((CraftWorld) l.getWorld()).getHandle().addEntity(this);
Bukkit.getServer().getScheduler().scheduleSyncRepeatingTask(Bukkit.getServer().getPluginManager().getPlugin("FlappyBirds"), new BukkitRunnable(){
public void run() {
getBukkitEntity().teleport(l.add(0.0D, 0.1D, 0.0D));
}
}, 0L, 5L);
}
}
 

The Class For Registering The Entities:

Code:java

public class NMSHandler {
 
@SuppressWarnings("unchecked")
public static void registerEntity(String name, int id, Class<? extends EntityInsentient> customClass) {
try {
List<Map<?, ?>> dataMaps = new ArrayList<Map<?, ?>>();
for (Field f : EntityTypes.class.getDeclaredFields()) {
if (f.getType().getSimpleName().equals(Map.class.getSimpleName())) {
f.setAccessible(true);
dataMaps.add((Map<?, ?>) f.get(null));
}
}
 
((Map<Class<? extends EntityInsentient>, String>) dataMaps.get(1)).put(customClass, name);
((Map<Class<? extends EntityInsentient>, Integer>) dataMaps.get(3)).put(customClass, id);
 
} catch (Exception e) {
e.printStackTrace();
}
}
}
 

The Registration:

Code:java

NMSHandler.registerEntity("DisplayChicken", 76, DisplayChicken.class);

Class That Uses The Display Chicken:

Code:java

 public void spawnDisplayChicken(ClassBase base, Location l){
ClassDisplay display = new ClassDisplay(base, l);
ConfigurationSection s = getSection("classDisplays").createSection(display.getClassBase().getName());
LocationUtil.setLocation(s, l);
LobbyConfig.saveLobbyConfig(plugin);
classDisplays.add(display);
DisplayChicken chicken = new DisplayChicken(((CraftWorld)l.getWorld()).getHandle(), display);
chicken.spawn(l);
}
 
public ClassDisplay getClassDisplay(String className){
try{
Location l = LocationUtil.getLocation(getSection("classDisplays." + className));
ClassDisplay display = new ClassDisplay(ClassManager.getInstance().getClass(className), l);
return display;
}catch(Exception e){
e.printStackTrace();
return null;
}
}
 
private void loadClassDisplays(){
try{
isClassDisplaysLoaded = true;
for(String key : getSection("classDisplays").getKeys(false)){
ClassDisplay display = getClassDisplay(key);
classDisplays.add(display);
Location l = display.getLocation();
DisplayChicken chicken = new DisplayChicken(((CraftWorld)l.getWorld()).getHandle(), display);
chicken.spawn(l);
}
}catch(Exception e){
 
}
}

bigteddy98 xTrollxDudex Cirno (I tag the same people every time )

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Not everything is in /craftbukkit, only classes related to the actual modification. /mc-dev has all server classes (but none related to the modification).

 

I now know that, but now I have a different issue on my hands.

 

That goal makes the chicken float IN WATER, so no
Why dont you just set it to have a slightward up velocity on a runnable?

 

What do you mean? I don't want it to "appear" to be floating. I just want to make it so it constantly flap its wings. And the only way possible is to teleport it every 5 ticks...

 

BungeeTheCookie
I think the chicken flaps its wing as it falls, and may be handled client side, Ill look under the packets list for you.

 

Thank you so much! It would be so much better if I used packets.

 

BungeeTheCookie
No luck, unless its under Entity Status,

I think its handled client-side based on if the chicken is falling or not.

I would as a last resort test if setting the chicken distance falled to something more than 0, and see if the wings flap.

 

Well my client crashes every time I log in so I can't test this...

 

Plo124 http://wiki.vg/Protocol#Entity_Status I don't see anything under Entity Status, my guess is its either a different packet or client-sided.

 

I think its handle client-side.