Hello I am making a plugin that once you get hit by an arrow getting 'passed to' after 3 hits it does something. I have attached my code below and this happens whenever I hit my alt account with a bow. This is a minecraft football tackling plugin. Attached is my log from recent load. Code: [19:35:14] [Server thread/INFO]: Starting minecraft server version 1.12.2 [19:35:14] [Server thread/INFO]: Loading properties [19:35:14] [Server thread/WARN]: resource-pack-hash is deprecated and found along side resource-pack-sha1. resource-pack-hash will be ignored. [19:35:14] [Server thread/INFO]: Default game type: SURVIVAL [19:35:14] [Server thread/INFO]: This server is running CraftBukkit version git-Spigot-dcd1643-e60fc34 (MC: 1.12.2) (Implementing API version 1.12.2-R0.1-SNAPSHOT) [19:35:14] [Server thread/INFO]: Debug logging is disabled [19:35:14] [Server thread/INFO]: Server Ping Player Sample Count: 12 [19:35:14] [Server thread/INFO]: Using 4 threads for Netty based IO [19:35:14] [Server thread/INFO]: Generating keypair [19:35:14] [Server thread/INFO]: Starting Minecraft server on *:25565 [19:35:14] [Server thread/INFO]: Using default channel type [19:35:15] [Server thread/INFO]: Set PluginClassLoader as parallel capable [19:35:15] [Server thread/INFO]: [PlugMan] Loading PlugMan v2.1.7 [19:35:15] [Server thread/INFO]: [RoboRef] Loading RoboRef v1.0 [19:35:15] [Server thread/INFO]: [Vault] Loading Vault v1.7.3-b131 [19:35:15] [Server thread/INFO]: [Testing] Loading Testing v1.0-SNAPSHOT [19:35:15] [Server thread/INFO]: [WheatMoney] Loading WheatMoney v1.0-SNAPSHOT [19:35:15] [Server thread/INFO]: [Essentials] Loading Essentials v2.18.2.0 [19:35:15] [Server thread/INFO]: [Vault] Enabling Vault v1.7.3-b131 [19:35:15] [Server thread/INFO]: [Vault] [Economy] Essentials Economy found: Waiting [19:35:15] [Server thread/INFO]: [Vault] [Permission] SuperPermissions loaded as backup permission system. [19:35:15] [Server thread/INFO]: [Vault] Enabled Version 1.7.3-b131 [19:35:15] [Server thread/INFO]: **** Beginning UUID conversion, this may take A LONG time **** [19:35:15] [Server thread/INFO]: Preparing level "world" [19:35:15] [Server thread/INFO]: -------- World Settings For [world] -------- [19:35:15] [Server thread/INFO]: Item Merge Radius: 2.5 [19:35:15] [Server thread/INFO]: Item Despawn Rate: 6000 [19:35:15] [Server thread/INFO]: Arrow Despawn Rate: 1200 [19:35:15] [Server thread/INFO]: Allow Zombie Pigmen to spawn from portal blocks: true [19:35:15] [Server thread/INFO]: Zombie Aggressive Towards Villager: true [19:35:15] [Server thread/INFO]: View Distance: 10 [19:35:15] [Server thread/INFO]: Experience Merge Radius: 3.0 [19:35:15] [Server thread/INFO]: Nerfing mobs spawned from spawners: false [19:35:15] [Server thread/INFO]: Tile Max Tick Time: 50ms Entity max Tick Time: 50ms [19:35:15] [Server thread/INFO]: Entity Activation Range: An 32 / Mo 32 / Mi 16 / Tiv true [19:35:15] [Server thread/INFO]: Entity Tracking Range: Pl 48 / An 48 / Mo 48 / Mi 32 / Other 64 [19:35:15] [Server thread/INFO]: Random Lighting Updates: false [19:35:15] [Server thread/INFO]: Structure Info Saving: true [19:35:15] [Server thread/INFO]: Custom Map Seeds: Village: 10387312 Feature: 14357617 Monument: 10387313 Slime: 987234911 [19:35:15] [Server thread/INFO]: Cactus Growth Modifier: 100% [19:35:15] [Server thread/INFO]: Cane Growth Modifier: 100% [19:35:15] [Server thread/INFO]: Melon Growth Modifier: 100% [19:35:15] [Server thread/INFO]: Mushroom Growth Modifier: 100% [19:35:15] [Server thread/INFO]: Pumpkin Growth Modifier: 100% [19:35:15] [Server thread/INFO]: Sapling Growth Modifier: 100% [19:35:15] [Server thread/INFO]: Wheat Growth Modifier: 100% [19:35:15] [Server thread/INFO]: NetherWart Growth Modifier: 100% [19:35:15] [Server thread/INFO]: Vine Growth Modifier: 100% [19:35:15] [Server thread/INFO]: Cocoa Growth Modifier: 100% [19:35:15] [Server thread/INFO]: Max TNT Explosions: 100 [19:35:15] [Server thread/INFO]: Mob Spawn Range: 6 [19:35:15] [Server thread/INFO]: Hopper Transfer: 8 Hopper Check: 1 Hopper Amount: 1 [19:35:16] [Server thread/INFO]: -------- World Settings For [world_nether] -------- [19:35:16] [Server thread/INFO]: Item Merge Radius: 2.5 [19:35:16] [Server thread/INFO]: Item Despawn Rate: 6000 [19:35:16] [Server thread/INFO]: Arrow Despawn Rate: 1200 [19:35:16] [Server thread/INFO]: Allow Zombie Pigmen to spawn from portal blocks: true [19:35:16] [Server thread/INFO]: Zombie Aggressive Towards Villager: true [19:35:16] [Server thread/INFO]: View Distance: 10 [19:35:16] [Server thread/INFO]: Experience Merge Radius: 3.0 [19:35:16] [Server thread/INFO]: Nerfing mobs spawned from spawners: false [19:35:16] [Server thread/INFO]: Tile Max Tick Time: 50ms Entity max Tick Time: 50ms [19:35:16] [Server thread/INFO]: Entity Activation Range: An 32 / Mo 32 / Mi 16 / Tiv true [19:35:16] [Server thread/INFO]: Entity Tracking Range: Pl 48 / An 48 / Mo 48 / Mi 32 / Other 64 [19:35:16] [Server thread/INFO]: Random Lighting Updates: false [19:35:16] [Server thread/INFO]: Structure Info Saving: true [19:35:16] [Server thread/INFO]: Custom Map Seeds: Village: 10387312 Feature: 14357617 Monument: 10387313 Slime: 987234911 [19:35:16] [Server thread/INFO]: Cactus Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Cane Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Melon Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Mushroom Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Pumpkin Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Sapling Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Wheat Growth Modifier: 100% [19:35:16] [Server thread/INFO]: NetherWart Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Vine Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Cocoa Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Max TNT Explosions: 100 [19:35:16] [Server thread/INFO]: Mob Spawn Range: 6 [19:35:16] [Server thread/INFO]: Hopper Transfer: 8 Hopper Check: 1 Hopper Amount: 1 [19:35:16] [Server thread/INFO]: -------- World Settings For [world_the_end] -------- [19:35:16] [Server thread/INFO]: Item Merge Radius: 2.5 [19:35:16] [Server thread/INFO]: Item Despawn Rate: 6000 [19:35:16] [Server thread/INFO]: Arrow Despawn Rate: 1200 [19:35:16] [Server thread/INFO]: Allow Zombie Pigmen to spawn from portal blocks: true [19:35:16] [Server thread/INFO]: Zombie Aggressive Towards Villager: true [19:35:16] [Server thread/INFO]: View Distance: 10 [19:35:16] [Server thread/INFO]: Experience Merge Radius: 3.0 [19:35:16] [Server thread/INFO]: Nerfing mobs spawned from spawners: false [19:35:16] [Server thread/INFO]: Tile Max Tick Time: 50ms Entity max Tick Time: 50ms [19:35:16] [Server thread/INFO]: Entity Activation Range: An 32 / Mo 32 / Mi 16 / Tiv true [19:35:16] [Server thread/INFO]: Entity Tracking Range: Pl 48 / An 48 / Mo 48 / Mi 32 / Other 64 [19:35:16] [Server thread/INFO]: Random Lighting Updates: false [19:35:16] [Server thread/INFO]: Structure Info Saving: true [19:35:16] [Server thread/INFO]: Custom Map Seeds: Village: 10387312 Feature: 14357617 Monument: 10387313 Slime: 987234911 [19:35:16] [Server thread/INFO]: Cactus Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Cane Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Melon Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Mushroom Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Pumpkin Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Sapling Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Wheat Growth Modifier: 100% [19:35:16] [Server thread/INFO]: NetherWart Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Vine Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Cocoa Growth Modifier: 100% [19:35:16] [Server thread/INFO]: Max TNT Explosions: 100 [19:35:16] [Server thread/INFO]: Mob Spawn Range: 6 [19:35:16] [Server thread/INFO]: Hopper Transfer: 8 Hopper Check: 1 Hopper Amount: 1 [19:35:16] [Server thread/INFO]: Preparing start region for level 0 (Seed: 1391075044624263318) [19:35:16] [User Authenticator #1/INFO]: UUID of player JohnnyyJohnnyy is ab285988-5a9e-4428-869f-ed2e75e08c6d [19:35:16] [User Authenticator #2/INFO]: UUID of player NotDew is 9655f153-c668-4b65-a160-720e5bc48a11 [19:35:17] [Server thread/INFO]: Preparing spawn area: 27% [19:35:18] [Server thread/INFO]: Preparing spawn area: 90% [19:35:18] [Server thread/INFO]: Preparing start region for level 1 (Seed: 1391075044624263318) [19:35:19] [Server thread/INFO]: Preparing spawn area: 45% [19:35:20] [Server thread/INFO]: Preparing spawn area: 94% [19:35:20] [Server thread/INFO]: Preparing start region for level 2 (Seed: 1391075044624263318) [19:35:20] [Server thread/INFO]: [PlugMan] Enabling PlugMan v2.1.7 [19:35:20] [Server thread/INFO]: [RoboRef] Enabling RoboRef v1.0 [19:35:20] [Server thread/ERROR]: RoboRef is enabling! [19:35:20] [Server thread/INFO]: [Testing] Enabling Testing v1.0-SNAPSHOT [19:35:20] [Server thread/INFO]: Starting! [19:35:20] [Server thread/INFO]: [WheatMoney] Enabling WheatMoney v1.0-SNAPSHOT [19:35:20] [Server thread/ERROR]: WheatMoney is enabling... Helllllo! [19:35:20] [Server thread/INFO]: [Essentials] Enabling Essentials v2.18.2.0 [19:35:20] [Server thread/INFO]: [Essentials] You are running a server with limited API functionality. EssentialsX will still work, but certain features may be disabled. [19:35:20] [Server thread/INFO]: Attempting to convert old kits in config.yml to new kits.yml [19:35:20] [Server thread/INFO]: No kits found to migrate. [19:35:21] [Server thread/INFO]: Loaded 852 items from items.csv. [19:35:21] [Server thread/INFO]: Using locale en_US [19:35:21] [Server thread/INFO]: [Essentials] ServerListPingEvent: Spigot iterator API [19:35:21] [Server thread/INFO]: [Essentials] Starting Metrics. Opt-out using the global bStats config. [19:35:21] [Server thread/INFO]: [Vault] [Economy] Essentials Economy hooked. [19:35:21] [Server thread/INFO]: [Essentials] Using superperms-based permissions. [19:35:21] [Server thread/INFO]: Server permissions file permissions.yml is empty, ignoring it [19:35:21] [Server thread/INFO]: Done (5.590s)! For help, type "help" or "?" [19:35:21] [Craft Scheduler Thread - 3/INFO]: [Vault] Checking for Updates ... [19:35:21] [Craft Scheduler Thread - 3/INFO]: [Vault] No new version available [19:35:21] [Server thread/INFO]: JohnnyyJohnnyy[/127.0.0.1:55022] logged in with entity id 230 at ([world]-198.69999998807907, 72.0, 179.30000001192093) [19:35:21] [Server thread/INFO]: NotDew[/127.0.0.1:55024] logged in with entity id 231 at ([world]-197.98415171023757, 73.0, 181.60794877437183) [19:35:24] [Server thread/INFO]: Projectile Hit[m [19:35:24] [Server thread/ERROR]: Could not pass event ProjectileHitEvent to RoboRef v1.0 org.bukkit.event.EventException: null at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:500) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:485) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.craftbukkit.v1_12_R1.event.CraftEventFactory.callProjectileHitEvent(CraftEventFactory.java:803) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.EntityArrow.a(EntityArrow.java:259) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.EntityArrow.B_(EntityArrow.java:194) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.EntityTippedArrow.B_(EntityTippedArrow.java:86) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.World.entityJoinedWorld(World.java:1631) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.World.h(World.java:1601) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.World.tickEntities(World.java:1435) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.WorldServer.tickEntities(WorldServer.java:668) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:817) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577) [spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at java.lang.Thread.run(Thread.java:829) [?:?] Caused by: java.lang.IllegalArgumentException: Plugin already initialized! at org.bukkit.plugin.java.PluginClassLoader.initialize(PluginClassLoader.java:183) ~[spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.plugin.java.JavaPlugin.<init>(JavaPlugin.java:60) ~[spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at me.notdew.com.roboref.RoboRef.<init>(RoboRef.java:14) ~[?:?] at me.notdew.com.roboref.Events.ArrowHit.onProjectileHit(ArrowHit.java:21) ~[?:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?] at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?] at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] ... 16 more Caused by: java.lang.IllegalStateException: Initial initialization at org.bukkit.plugin.java.PluginClassLoader.initialize(PluginClassLoader.java:186) ~[spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.plugin.java.JavaPlugin.<init>(JavaPlugin.java:60) ~[spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at me.notdew.com.roboref.RoboRef.<init>(RoboRef.java:14) ~[?:?] at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:?] at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:?] at jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?] at java.lang.reflect.Constructor.newInstance(Constructor.java:490) ~[?:?] at java.lang.Class.newInstance(Class.java:584) ~[?:?] at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:90) ~[spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:327) ~[spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:248) ~[spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at org.bukkit.craftbukkit.v1_12_R1.CraftServer.loadPlugins(CraftServer.java:305) ~[spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:205) ~[spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:545) ~[spigot-1.12.2.jar:git-Spigot-dcd1643-e60fc34] ... 1 more [19:35:29] [Server thread/INFO]: NotDew issued server command: /fly [19:38:14] [Server thread/INFO]: Stopping the server [19:38:14] [Server thread/INFO]: Stopping server [19:38:14] [Server thread/INFO]: [Essentials] Disabling Essentials v2.18.2.0 [19:38:14] [Server thread/INFO]: [Vault] [Economy] Essentials Economy unhooked. [19:38:14] [Server thread/INFO]: [WheatMoney] Disabling WheatMoney v1.0-SNAPSHOT [19:38:14] [Server thread/INFO]: [WheatMoney] Disabled Version 1.0-SNAPSHOT [19:38:14] [Server thread/INFO]: WheatMoney is disabling... Bye! [19:38:14] [Server thread/INFO]: [Testing] Disabling Testing v1.0-SNAPSHOT [19:38:14] [Server thread/INFO]: [Vault] Disabling Vault v1.7.3-b131 [19:38:14] [Server thread/INFO]: [RoboRef] Disabling RoboRef v1.0 [19:38:14] [Server thread/INFO]: [PlugMan] Disabling PlugMan v2.1.7 [19:38:14] [Server thread/INFO]: Saving players [19:38:14] [Server thread/INFO]: JohnnyyJohnnyy lost connection: Server closed [19:38:14] [Server thread/INFO]: JohnnyyJohnnyy left the game [19:38:14] [Server thread/INFO]: NotDew lost connection: Server closed [19:38:14] [Server thread/INFO]: NotDew left the game [19:38:14] [Server thread/INFO]: Saving worlds [19:38:14] [Server thread/INFO]: Saving chunks for level 'world'/overworld [19:38:14] [Server thread/INFO]: Saving chunks for level 'world_nether'/the_nether [19:38:14] [Server thread/INFO]: Saving chunks for level 'world_the_end'/the_end And here is my code Code: package me.notdew.com.roboref; import me.notdew.com.roboref.Events.ArrowHit; import me.notdew.com.roboref.Events.PlayerHit; import org.bukkit.entity.Player; import org.bukkit.plugin.java.JavaPlugin; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.logging.Logger; public final class RoboRef extends JavaPlugin { private static final Logger log = Logger.getLogger("Minecraft"); public ArrayList<Player> HitList = new ArrayList<Player>(); public ArrayList<Player> OneHitList = new ArrayList<Player>(); public ArrayList<Player> TwoHitList = new ArrayList<Player>(); @Override public void onEnable() { // Plugin startup logic log.severe(String.format("RoboRef is enabling!")); getServer().getPluginManager().registerEvents(new ArrowHit(), this); getServer().getPluginManager().registerEvents(new PlayerHit(), this); } @Override public void onDisable() { // Plugin shutdown logic } } Code: package me.notdew.com.roboref.Events; import org.bukkit.Bukkit; import org.bukkit.entity.Entity; import org.bukkit.entity.Player; import org.bukkit.event.EventHandler; import org.bukkit.event.Listener; import org.bukkit.event.entity.ProjectileHitEvent; import me.notdew.com.roboref.RoboRef; import java.util.ArrayList; public class ArrowHit implements Listener { @EventHandler public void onProjectileHit(ProjectileHitEvent e){ if (e.getHitEntity() instanceof Player){ Player damageTaker = (Player)e.getHitEntity(); Bukkit.broadcastMessage("Projectile Hit"); RoboRef roboref = new RoboRef(); roboref.HitList.add(damageTaker); } else { } } } Code: package me.notdew.com.roboref.Events; import me.notdew.com.roboref.RoboRef; import org.bukkit.Bukkit; import org.bukkit.Location; import org.bukkit.Material; import org.bukkit.World; import org.bukkit.entity.Player; import org.bukkit.event.EventHandler; import org.bukkit.event.Listener; import org.bukkit.event.entity.EntityDamageByEntityEvent; import org.bukkit.event.player.PlayerInteractAtEntityEvent; import org.bukkit.event.player.PlayerInteractEntityEvent; public class PlayerHit implements Listener { @EventHandler public void onPlayerHit(EntityDamageByEntityEvent e){ if ((e.getDamager() instanceof Player && e.getEntity() instanceof Player)){ Bukkit.broadcastMessage("a"); Player player = (Player) e.getEntity(); RoboRef Hit = new RoboRef(); if (Hit.HitList.contains(player)){ Bukkit.broadcastMessage("b"); Hit.OneHitList.add(player); Hit.HitList.remove(player); } if(Hit.OneHitList.contains(player)) { Bukkit.broadcastMessage("c"); Hit.OneHitList.remove(player); } if(Hit.TwoHitList.contains(player)) { Bukkit.broadcastMessage("d"); Hit.TwoHitList.remove(player); Location l = player.getLocation(); World w = player.getWorld(); w.getBlockAt(l).setType(Material.DIRT); } else { return; } } } } RoboRef is the name of the plugin and main class. Ty.
You are doing this PHP: RoboRef roboref = new RoboRef(); And your error is this I will let you figure the rest out.
