BiomesOPlenty/src/minecraft/biomesoplenty/items/projectiles/EntityPoisonDart.java

package biomesoplenty.items.projectiles;

import java.util.List;

import net.minecraft.block.Block;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLiving;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.monster.EntityEnderman;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraft.entity.projectile.EntityArrow;
import net.minecraft.network.packet.Packet70GameEvent;
import net.minecraft.potion.Potion;
import net.minecraft.potion.PotionEffect;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.DamageSource;
import net.minecraft.util.MathHelper;
import net.minecraft.util.MovingObjectPosition;
import net.minecraft.util.Vec3;
import net.minecraft.world.World;
import biomesoplenty.BiomesOPlenty;
import biomesoplenty.ClientProxy;

public class EntityPoisonDart extends EntityArrow
{
	boolean isClient = BiomesOPlenty.proxy instanceof ClientProxy;

	private int xTile = -1;
	private int yTile = -1;
	private int zTile = -1;
	private int inTile = 0;
	private int inData = 0;
	private boolean inGround = false;
	private int ticksInGround;
	private int ticksInAir = 0;
	private double damage = 0.1D;

	public EntityPoisonDart(World par1World)
	{
		super(par1World);
	}

	public EntityPoisonDart(World par1World, EntityLiving par2EntityLiving, float par3)
	{
		super(par1World, par2EntityLiving, par3);
	}

	public EntityPoisonDart(World par1World, double par2, double par4, double par6)
	{
		super(par1World, par2, par4, par6);
	}

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

		if (prevRotationPitch == 0.0F && prevRotationYaw == 0.0F)
		{
			float f = MathHelper.sqrt_double(motionX * motionX + motionZ * motionZ);
			prevRotationYaw = rotationYaw = (float)(Math.atan2(motionX, motionZ) * 180.0D / Math.PI);
			prevRotationPitch = rotationPitch = (float)(Math.atan2(motionY, f) * 180.0D / Math.PI);
		}

		int i = worldObj.getBlockId(xTile, yTile, zTile);

		if (i > 0)
		{
			Block.blocksList[i].setBlockBoundsBasedOnState(worldObj, xTile, yTile, zTile);
			AxisAlignedBB axisalignedbb = Block.blocksList[i].getCollisionBoundingBoxFromPool(worldObj, xTile, yTile, zTile);

			if (axisalignedbb != null && axisalignedbb.isVecInside(worldObj.getWorldVec3Pool().getVecFromPool(posX, posY, posZ)))
			{
				inGround = true;
			}
		}

		if (inGround)
		{
			int j = worldObj.getBlockId(xTile, yTile, zTile);
			int k = worldObj.getBlockMetadata(xTile, yTile, zTile);

			if (j == inTile && k == inData)
			{
				++ticksInGround;

				if (ticksInGround == 1)
				{
					this.setDead();
				}
			}
			else
			{
				inGround = false;
				motionX *= rand.nextFloat() * 0.2F;
				motionY *= rand.nextFloat() * 0.2F;
				motionZ *= rand.nextFloat() * 0.2F;
				ticksInGround = 0;
				ticksInAir = 0;
			}
		}
		else
		{
			++ticksInAir;
			Vec3 vec3 = worldObj.getWorldVec3Pool().getVecFromPool(posX, posY, posZ);
			Vec3 vec31 = worldObj.getWorldVec3Pool().getVecFromPool(posX + motionX, posY + motionY, posZ + motionZ);
			MovingObjectPosition movingobjectposition = worldObj.rayTraceBlocks_do_do(vec3, vec31, false, true);
			vec3 = worldObj.getWorldVec3Pool().getVecFromPool(posX, posY, posZ);
			vec31 = worldObj.getWorldVec3Pool().getVecFromPool(posX + motionX, posY + motionY, posZ + motionZ);

			if (movingobjectposition != null)
			{
				vec31 = worldObj.getWorldVec3Pool().getVecFromPool(movingobjectposition.hitVec.xCoord, movingobjectposition.hitVec.yCoord, movingobjectposition.hitVec.zCoord);
			}

			Entity entity = null;
			List list = worldObj.getEntitiesWithinAABBExcludingEntity(this, boundingBox.addCoord(motionX, motionY, motionZ).expand(1.0D, 1.0D, 1.0D));
			double d0 = 0.0D;
			int l;
			float f1;

			for (l = 0; l < list.size(); ++l)
			{
				Entity entity1 = (Entity)list.get(l);

				if (entity1.canBeCollidedWith() && (entity1 != shootingEntity || ticksInAir >= 5))
				{
					f1 = 0.3F;
					AxisAlignedBB axisalignedbb1 = entity1.boundingBox.expand(f1, f1, f1);
					MovingObjectPosition movingobjectposition1 = axisalignedbb1.calculateIntercept(vec3, vec31);

					if (movingobjectposition1 != null)
					{
						double d1 = vec3.distanceTo(movingobjectposition1.hitVec);

						if (d1 < d0 || d0 == 0.0D)
						{
							entity = entity1;
							d0 = d1;
						}
					}
				}
			}

			if (entity != null)
			{
				movingobjectposition = new MovingObjectPosition(entity);
			}

			if (movingobjectposition != null && movingobjectposition.entityHit != null && movingobjectposition.entityHit instanceof EntityPlayer)
			{
				EntityPlayer entityplayer = (EntityPlayer)movingobjectposition.entityHit;

				if (entityplayer.capabilities.disableDamage || shootingEntity instanceof EntityPlayer && !((EntityPlayer)shootingEntity).func_96122_a(entityplayer))
				{
					movingobjectposition = null;
				}
			}

			float f2;
			float f3;

			if (movingobjectposition != null)
			{
				if (movingobjectposition.entityHit != null)
				{
					f2 = MathHelper.sqrt_double(motionX * motionX + motionY * motionY + motionZ * motionZ);
					int i1 = MathHelper.ceiling_double_int(f2 * damage);

					((EntityLivingBase)movingobjectposition.entityHit).addPotionEffect(new PotionEffect(Potion.poison.id, 100));

					if (this.getIsCritical())
					{
						i1 += rand.nextInt(i1 / 2 + 2);
					}

					DamageSource damagesource = null;

					if (shootingEntity == null)
					{
						damagesource = DamageSource.causeArrowDamage(this, this);
					}
					else
					{
						damagesource = DamageSource.causeArrowDamage(this, shootingEntity);
					}

					if (this.isBurning() && !(movingobjectposition.entityHit instanceof EntityEnderman))
					{
						movingobjectposition.entityHit.setFire(5);
					}

					if (movingobjectposition.entityHit.attackEntityFrom(damagesource, i1))
					{
						if (movingobjectposition.entityHit instanceof EntityLiving)
						{
							EntityLivingBase entityliving = (EntityLivingBase)movingobjectposition.entityHit;

							if (shootingEntity != null && movingobjectposition.entityHit != shootingEntity && movingobjectposition.entityHit instanceof EntityPlayer && shootingEntity instanceof EntityPlayerMP)
							{
								((EntityPlayerMP)shootingEntity).playerNetServerHandler.sendPacketToPlayer(new Packet70GameEvent(6, 0));
							}
						}

						this.playSound("random.bowhit", 1.0F, 1.2F / (rand.nextFloat() * 0.2F + 0.9F));
						this.setDead();
					}
					else
					{
						motionX *= -0.10000000149011612D;
						motionY *= -0.10000000149011612D;
						motionZ *= -0.10000000149011612D;
						rotationYaw += 180.0F;
						prevRotationYaw += 180.0F;
						ticksInAir = 0;
					}
				}
				else
				{
					xTile = movingobjectposition.blockX;
					yTile = movingobjectposition.blockY;
					zTile = movingobjectposition.blockZ;
					inTile = worldObj.getBlockId(xTile, yTile, zTile);
					inData = worldObj.getBlockMetadata(xTile, yTile, zTile);
					motionX = ((float)(movingobjectposition.hitVec.xCoord - posX));
					motionY = ((float)(movingobjectposition.hitVec.yCoord - posY));
					motionZ = ((float)(movingobjectposition.hitVec.zCoord - posZ));
					f2 = MathHelper.sqrt_double(motionX * motionX + motionY * motionY + motionZ * motionZ);
					posX -= motionX / f2 * 0.05000000074505806D;
					posY -= motionY / f2 * 0.05000000074505806D;
					posZ -= motionZ / f2 * 0.05000000074505806D;

					for (int p = 0; i < 16; ++i)
					{
						BiomesOPlenty.proxy.spawnParticle("dart", posX, posY, posZ);
					}

					this.playSound("random.bowhit", 1.0F, 1.2F / (rand.nextFloat() * 0.2F + 0.9F));
					this.setDead();

					if (inTile != 0)
					{
						Block.blocksList[inTile].onEntityCollidedWithBlock(worldObj, xTile, yTile, zTile, this);
					}
				}
			}

			posX += motionX;
			posY += motionY;
			posZ += motionZ;
			f2 = MathHelper.sqrt_double(motionX * motionX + motionZ * motionZ);
			rotationYaw = (float)(Math.atan2(motionX, motionZ) * 180.0D / Math.PI);

			for (rotationPitch = (float)(Math.atan2(motionY, f2) * 180.0D / Math.PI); rotationPitch - prevRotationPitch < -180.0F; prevRotationPitch -= 360.0F)
			{
				;
			}

			while (rotationPitch - prevRotationPitch >= 180.0F)
			{
				prevRotationPitch += 360.0F;
			}

			while (rotationYaw - prevRotationYaw < -180.0F)
			{
				prevRotationYaw -= 360.0F;
			}

			while (rotationYaw - prevRotationYaw >= 180.0F)
			{
				prevRotationYaw += 360.0F;
			}

			rotationPitch = prevRotationPitch + (rotationPitch - prevRotationPitch) * 0.2F;
			rotationYaw = prevRotationYaw + (rotationYaw - prevRotationYaw) * 0.2F;
			float f4 = 0.99F;
			f1 = 0.05F;

			if (this.isInWater())
			{
				for (int j1 = 0; j1 < 4; ++j1)
				{
					f3 = 0.25F;
					worldObj.spawnParticle("bubble", posX - motionX * f3, posY - motionY * f3, posZ - motionZ * f3, motionX, motionY, motionZ);
				}

				f4 = 0.8F;
			}

			motionX *= f4;
			motionY *= f4;
			motionZ *= f4;
			motionY -= f1;
			this.setPosition(posX, posY, posZ);
			this.doBlockCollisions();
		}
	}
}