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

package biomesoplenty.items.projectiles;

import java.util.List;

import net.minecraft.block.Block;
import net.minecraft.enchantment.EnchantmentThorns;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLiving;
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.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 EntityDart 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 = 0.5D;
	
	public EntityDart(World par1World)
	{
		super(par1World);
	}

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

	public EntityDart(World par1World, double par2, double par4, double par6)
	{
		super(par1World, par2, par4, par6);
	}
	
	public void onUpdate()
    {
        super.onUpdate();

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

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

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

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

//        if (this.inGround)
//        {
//            int j = this.worldObj.getBlockId(this.xTile, this.yTile, this.zTile);
//            int k = this.worldObj.getBlockMetadata(this.xTile, this.yTile, this.zTile);
//
//            if (j == this.inTile && k == this.inData)
//            {
//                ++this.ticksInGround;
//
//                if (this.ticksInGround == 1)
//                {
//                    this.setDead();
//                }
//            }
//            else
//            {
//                this.inGround = false;
//                this.motionX *= (double)(this.rand.nextFloat() * 0.2F);
//                this.motionY *= (double)(this.rand.nextFloat() * 0.2F);
//                this.motionZ *= (double)(this.rand.nextFloat() * 0.2F);
//                this.ticksInGround = 0;
//                this.ticksInAir = 0;
//            }
//        }
//        else
        {
            ++this.ticksInAir;
            Vec3 vec3 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ);
            Vec3 vec31 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ);
            MovingObjectPosition movingobjectposition = this.worldObj.rayTraceBlocks_do_do(vec3, vec31, false, true);
            vec3 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ);
            vec31 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ);

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

            Entity entity = null;
            List list = this.worldObj.getEntitiesWithinAABBExcludingEntity(this, this.boundingBox.addCoord(this.motionX, this.motionY, this.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 != this.shootingEntity || this.ticksInAir >= 5))
                {
                    f1 = 0.3F;
                    AxisAlignedBB axisalignedbb1 = entity1.boundingBox.expand((double)f1, (double)f1, (double)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 || this.shootingEntity instanceof EntityPlayer && !((EntityPlayer)this.shootingEntity).func_96122_a(entityplayer))
                {
                    movingobjectposition = null;
                }
            }

            float f2;
            float f3;

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

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

                    DamageSource damagesource = null;

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

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

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

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

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

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

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

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

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

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

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

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

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

                f4 = 0.8F;
            }

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

//	@Override
//	protected void onImpact(MovingObjectPosition par1MovingObjectPosition) 
//	{
//        
//		if (par1MovingObjectPosition.entityHit != null)
//		{
//			par1MovingObjectPosition.entityHit.attackEntityFrom(DamageSource.causeThrownDamage(this, this.getThrower()), 2);
//			//((EntityLiving)par1MovingObjectPosition.entityHit).addPotionEffect(new PotionEffect(Potion.moveSlowdown.id, 300));
//		}
//
//			for (int i = 0; i < 16; ++i)
//			{
//				//BiomesOPlenty.proxy.spawnMud(this.worldObj, this.posX, this.posY, this.posZ, 0.0D, 0.0D, 0.0D);
//			}
//
//		if (!this.worldObj.isRemote)
//		{
//			this.setDead();
//		}
//	}
}