src/main/java/com/legacy/aether/entities/hostile/EntityCockatrice.java

package com.legacy.aether.entities.hostile;

import net.minecraft.entity.SharedMonsterAttributes;
import net.minecraft.entity.ai.EntityAILookIdle;
import net.minecraft.entity.ai.EntityAINearestAttackableTarget;
import net.minecraft.entity.ai.EntityAISwimming;
import net.minecraft.entity.ai.EntityAIWander;
import net.minecraft.entity.ai.EntityAIWatchClosest;
import net.minecraft.entity.monster.EntityMob;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.init.Items;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.potion.Potion;
import net.minecraft.potion.PotionEffect;
import net.minecraft.util.MathHelper;
import net.minecraft.world.EnumDifficulty;
import net.minecraft.world.World;

import com.legacy.aether.entities.passive.mountable.EntityMoa;
import com.legacy.aether.entities.projectile.EntityPoisonNeedle;

public class EntityCockatrice extends EntityMob {

	public float wingRotation, destPos, prevDestPos, prevWingRotation;

	public int shootTime, ticksUntilFlap;

	public EntityCockatrice(World world) {
		super(world);

		this.stepHeight = 1.0F;
		this.setSize(1.0F, 2.0F);
		this.tasks.addTask(0, new EntityAISwimming(this));
		this.tasks.addTask(7, new EntityAIWander(this, 1.0D));
		this.tasks.addTask(8, new EntityAIWatchClosest(this, EntityPlayer.class, 8.0F));
		this.tasks.addTask(8, new EntityAILookIdle(this));
		this.targetTasks.addTask(1, new EntityAINearestAttackableTarget(this, EntityPlayer.class, 0, true));
	}

	@Override
	protected void applyEntityAttributes() {
		super.applyEntityAttributes();

		this.getEntityAttribute(SharedMonsterAttributes.movementSpeed).setBaseValue(0.25D);
		this.getEntityAttribute(SharedMonsterAttributes.followRange).setBaseValue(35.0D);
		this.setHealth(10);
	}

	@Override
	public boolean getCanSpawnHere() {
		return this.rand.nextInt(25) == 0 && super.getCanSpawnHere();
	}

	@Override
	public boolean isPotionApplicable(PotionEffect effect) {
		return effect.getPotionID() == Potion.poison.id ? false : super.isPotionApplicable(effect);
	}

	@Override
	public void onUpdate() {
		super.onUpdate();

		if (this.getEntityToAttack() instanceof EntityPlayer) {
			EntityPlayer player = (EntityPlayer) this.getEntityToAttack();

			if (player.capabilities.isCreativeMode || this.getHealth() <= 0.0F || this.isDead || this.getEntityToAttack().isDead || this.getEntityToAttack().getDistanceToEntity(this) > 12D) {
				this.setTarget(null);
				this.shootTime = 0;
				return;
			}

			double d = this.getEntityToAttack().posX - this.posX;
			double d1 = this.getEntityToAttack().posZ - this.posZ;

			this.getLookHelper().setLookPositionWithEntity(this.getEntityToAttack(), 30.0F, 30.0F);

			if (this.shootTime >= 20 && this.canEntityBeSeen(this.getEntityToAttack())) {
				this.shootTarget();
				this.shootTime = -60;
			}

			if (this.shootTime < 20) {
				this.shootTime += 2;
			}

			this.rotationYaw = (float) ((Math.atan2(d1, d) * 180D) / 3.1415927410125732D) - 90F;
		}

		this.updateWingRotation();

		if (!this.worldObj.isRemote && this.worldObj.difficultySetting == EnumDifficulty.PEACEFUL) {
			this.setDead();
		}
	}

	public void shootTarget() {
		if (this.worldObj.difficultySetting == EnumDifficulty.PEACEFUL) {
			return;
		}

		double d1, d2;
		d1 = this.getEntityToAttack().posX - this.posX;
		d2 = this.getEntityToAttack().posZ - this.posZ;
		double d3 = 1.5D / Math.sqrt((d1 * d1) + (d2 * d2) + 0.1D);
		d1 = d1 * d3;
		d2 = d2 * d3;
		EntityPoisonNeedle entityarrow = new EntityPoisonNeedle(this.worldObj, this, 1.0F);
		entityarrow.posY = this.posY + 1.55D;
		this.playSound("random.bow", 1.0F, 1.2F / (this.rand.nextFloat() * 0.2F + 0.9F));
		this.worldObj.spawnEntityInWorld(entityarrow);
	}

	@Override
	public void onLivingUpdate() {
		super.onLivingUpdate();

		if (!this.onGround && this.motionY < 0.0D) {
			this.motionY *= 0.59999999999999998D;
		}
	}

	public void updateWingRotation() {
		if (!this.onGround) {
			if (this.ticksUntilFlap == 0) {
				this.worldObj.playSoundAtEntity(this, "mob.bat.takeoff", 0.15F, MathHelper.clamp_float(this.rand.nextFloat(), 0.7f, 1.0f) + MathHelper.clamp_float(this.rand.nextFloat(), 0f, 0.3f));

				this.ticksUntilFlap = 8;
			} else {
				this.ticksUntilFlap--;
			}
		}

		this.prevWingRotation = this.wingRotation;
		this.prevDestPos = this.destPos;

		this.destPos += 0.2D;
		this.destPos = EntityMoa.minMax(0.01F, 1.0F, this.destPos);

		if (this.onGround) {
			this.destPos = 0.0F;
		}

		this.wingRotation += 1.233F;
	}

	@Override
	public void fall(float distance) {
	}

	@Override
	public void writeEntityToNBT(NBTTagCompound nbttagcompound) {
		super.writeEntityToNBT(nbttagcompound);
	}

	@Override
	public void readEntityFromNBT(NBTTagCompound nbttagcompound) {
		super.readEntityFromNBT(nbttagcompound);
	}

	@Override
	protected String getLivingSound() {
		return "aether_legacy:aemob.moa.say";
	}

	@Override
	protected String getHurtSound() {
		return "aether_legacy:aemob.moa.say";
	}

	@Override
	protected String getDeathSound() {
		return "aether_legacy:aemob.moa.say";
	}

	@Override
	protected void dropFewItems(boolean var1, int var2) {
		this.dropItem(Items.feather, 1 + this.rand.nextInt(4));
	}

}