fly command allowing anyone to fly might not work not sure

src/main/java/com/legacyminecraft/poseidon/commands/FlyCommand.java

@@ -0,0 +1,41 @@
+package com.legacyminecraft.poseidon.commands;
+
+import net.minecraft.server.EntityPlayer;
+import org.bukkit.ChatColor;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.bukkit.craftbukkit.entity.CraftPlayer;
+import org.bukkit.entity.Player;
+
+public class FlyCommand extends Command {
+
+    public FlyCommand(String name) {
+        super(name);
+        this.description = "Toggles flight for yourself";
+        this.usageMessage = "/fly";
+    }
+
+    @Override
+    public boolean execute(CommandSender sender, String currentAlias, String[] args) {
+        if (!(sender instanceof Player)) {
+            sender.sendMessage("You can only use this command as a player.");
+            return true;
+        }
+
+        if (args.length != 0) {
+            sender.sendMessage(ChatColor.RED + "Usage: /fly");
+            return true;
+        }
+
+        EntityPlayer player = ((CraftPlayer) sender).getHandle();
+        player.flightAllowed = !player.flightAllowed;
+
+        if (player.flightAllowed) {
+            sender.sendMessage(ChatColor.GREEN + "Flight enabled.");
+        } else {
+            sender.sendMessage(ChatColor.YELLOW + "Flight disabled.");
+        }
+
+        return true;
+    }
+}

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

@@ -29,6 +29,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
     private ItemStack[] bN = new ItemStack[]{null, null, null, null, null};
     private int bO = 0;
     public boolean h;
+    public boolean flightAllowed;
 
     public EntityPlayer(MinecraftServer minecraftserver, World world, String s, ItemInWorldManager iteminworldmanager) {
         super(world);
@@ -65,6 +66,18 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
     public org.bukkit.Location compassTarget;
     // CraftBukkit end
 
+    @Override
+    public void a(NBTTagCompound nbttagcompound) {
+        super.a(nbttagcompound);
+        this.flightAllowed = nbttagcompound.m("FlightAllowed");
+    }
+
+    @Override
+    public void b(NBTTagCompound nbttagcompound) {
+        super.b(nbttagcompound);
+        nbttagcompound.a("FlightAllowed", this.flightAllowed);
+    }
+
     public void spawnIn(World world) {
         super.spawnIn(world);
         // CraftBukkit - world fallback code, either respawn location or global spawn

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

@@ -425,7 +425,7 @@ public class NetServerHandler extends NetHandler implements ICommandListener {
 
             AxisAlignedBB axisalignedbb = this.player.boundingBox.clone().b((double) f4, (double) f4, (double) f4).a(0.0D, -0.55D, 0.0D);
 
-            if (!this.minecraftServer.allowFlight && !worldserver.b(axisalignedbb)) {
+            if (!this.minecraftServer.allowFlight && !this.player.flightAllowed && !worldserver.b(axisalignedbb)) {
                 if (d6 >= -0.03125D) {
                     ++this.h;
                     if (this.h > 80) {

src/main/java/org/bukkit/command/SimpleCommandMap.java

@@ -2,6 +2,7 @@ package org.bukkit.command;
 
 //Poseidon start
 import com.legacyminecraft.poseidon.PoseidonConfig;
+import com.legacyminecraft.poseidon.commands.FlyCommand;
 import com.legacyminecraft.poseidon.commands.PoseidonCommand;
 import com.legacyminecraft.poseidon.commands.ResolveCommand;
 import com.legacyminecraft.poseidon.commands.TPSCommand;
@@ -55,6 +56,7 @@ public class SimpleCommandMap implements CommandMap {
 
         //Poseidon Command Start
         register("poseidon", new PoseidonCommand("poseidon"));
+        register("poseidon", new FlyCommand("fly"));
         if (PoseidonConfig.getInstance().getConfigBoolean("command.tps.enabled"))
             register("poseidon", new TPSCommand("tps"));
         //Poseidon Command End