package net.minecraft.entity.projectile;

import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import java.util.List;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagDouble;
import net.minecraft.nbt.NBTTagList;
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;

public abstract class EntityFireball extends Entity
{
    private int xTile = -1;
    private int yTile = -1;
    private int zTile = -1;
    private int inTile;
    private boolean inGround;
    public EntityLivingBase shootingEntity;
    private int ticksAlive;
    private int ticksInAir;
    public double accelerationX;
    public double accelerationY;
    public double accelerationZ;

    public EntityFireball(World par1World)
    {
        super(par1World);
        this.setSize(1.0F, 1.0F);
    }

    protected void entityInit() {}

    @SideOnly(Side.CLIENT)

    /**
     * Checks if the entity is in range to render by using the past in distance and comparing it to its average edge
     * length * 64 * renderDistanceWeight Args: distance
     */
    public boolean isInRangeToRenderDist(double par1)
    {
        double d1 = this.boundingBox.getAverageEdgeLength() * 4.0D;
        d1 *= 64.0D;
        return par1 < d1 * d1;
    }

    public EntityFireball(World par1World, double par2, double par4, double par6, double par8, double par10, double par12)
    {
        super(par1World);
        this.setSize(1.0F, 1.0F);
        this.setLocationAndAngles(par2, par4, par6, this.rotationYaw, this.rotationPitch);
        this.setPosition(par2, par4, par6);
        double d6 = (double)MathHelper.sqrt_double(par8 * par8 + par10 * par10 + par12 * par12);
        this.accelerationX = par8 / d6 * 0.1D;
        this.accelerationY = par10 / d6 * 0.1D;
        this.accelerationZ = par12 / d6 * 0.1D;
    }

    public EntityFireball(World par1World, EntityLivingBase par2EntityLivingBase, double par3, double par5, double par7)
    {
        super(par1World);
        this.shootingEntity = par2EntityLivingBase;
        this.setSize(1.0F, 1.0F);
        this.setLocationAndAngles(par2EntityLivingBase.posX, par2EntityLivingBase.posY, par2EntityLivingBase.posZ, par2EntityLivingBase.rotationYaw, par2EntityLivingBase.rotationPitch);
        this.setPosition(this.posX, this.posY, this.posZ);
        this.yOffset = 0.0F;
        this.motionX = this.motionY = this.motionZ = 0.0D;
        par3 += this.rand.nextGaussian() * 0.4D;
        par5 += this.rand.nextGaussian() * 0.4D;
        par7 += this.rand.nextGaussian() * 0.4D;
        double d3 = (double)MathHelper.sqrt_double(par3 * par3 + par5 * par5 + par7 * par7);
        this.accelerationX = par3 / d3 * 0.1D;
        this.accelerationY = par5 / d3 * 0.1D;
        this.accelerationZ = par7 / d3 * 0.1D;
    }

    /**
     * Called to update the entity's position/logic.
     */
    public void onUpdate()
    {
        if (!this.worldObj.isRemote && (this.shootingEntity != null && this.shootingEntity.isDead || !this.worldObj.blockExists((int)this.posX, (int)this.posY, (int)this.posZ)))
        {
            this.setDead();
        }
        else
        {
            super.onUpdate();
            this.setFire(1);

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

                if (i == this.inTile)
                {
                    ++this.ticksAlive;

                    if (this.ticksAlive == 600)
                    {
                        this.setDead();
                    }

                    return;
                }

                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.ticksAlive = 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.clip(vec3, vec31);
            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;

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

                if (entity1.canBeCollidedWith() && (!entity1.isEntityEqual(this.shootingEntity) || this.ticksInAir >= 25))
                {
                    float f = 0.3F;
                    AxisAlignedBB axisalignedbb = entity1.boundingBox.expand((double)f, (double)f, (double)f);
                    MovingObjectPosition movingobjectposition1 = axisalignedbb.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)
            {
                this.onImpact(movingobjectposition);
            }

            this.posX += this.motionX;
            this.posY += this.motionY;
            this.posZ += this.motionZ;
            float f1 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionZ * this.motionZ);
            this.rotationYaw = (float)(Math.atan2(this.motionZ, this.motionX) * 180.0D / Math.PI) + 90.0F;

            for (this.rotationPitch = (float)(Math.atan2((double)f1, this.motionY) * 180.0D / Math.PI) - 90.0F; 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 f2 = this.getMotionFactor();

            if (this.isInWater())
            {
                for (int k = 0; k < 4; ++k)
                {
                    float 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);
                }

                f2 = 0.8F;
            }

            this.motionX += this.accelerationX;
            this.motionY += this.accelerationY;
            this.motionZ += this.accelerationZ;
            this.motionX *= (double)f2;
            this.motionY *= (double)f2;
            this.motionZ *= (double)f2;
            this.worldObj.spawnParticle("smoke", this.posX, this.posY + 0.5D, this.posZ, 0.0D, 0.0D, 0.0D);
            this.setPosition(this.posX, this.posY, this.posZ);
        }
    }

    /**
     * Return the motion factor for this projectile. The factor is multiplied by the original motion.
     */
    protected float getMotionFactor()
    {
        return 0.95F;
    }

    /**
     * Called when this EntityFireball hits a block or entity.
     */
    protected abstract void onImpact(MovingObjectPosition movingobjectposition);

    /**
     * (abstract) Protected helper method to write subclass entity data to NBT.
     */
    public void writeEntityToNBT(NBTTagCompound par1NBTTagCompound)
    {
        par1NBTTagCompound.setShort("xTile", (short)this.xTile);
        par1NBTTagCompound.setShort("yTile", (short)this.yTile);
        par1NBTTagCompound.setShort("zTile", (short)this.zTile);
        par1NBTTagCompound.setByte("inTile", (byte)this.inTile);
        par1NBTTagCompound.setByte("inGround", (byte)(this.inGround ? 1 : 0));
        par1NBTTagCompound.setTag("direction", this.newDoubleNBTList(new double[] {this.motionX, this.motionY, this.motionZ}));
    }

    /**
     * (abstract) Protected helper method to read subclass entity data from NBT.
     */
    public void readEntityFromNBT(NBTTagCompound par1NBTTagCompound)
    {
        this.xTile = par1NBTTagCompound.getShort("xTile");
        this.yTile = par1NBTTagCompound.getShort("yTile");
        this.zTile = par1NBTTagCompound.getShort("zTile");
        this.inTile = par1NBTTagCompound.getByte("inTile") & 255;
        this.inGround = par1NBTTagCompound.getByte("inGround") == 1;

        if (par1NBTTagCompound.hasKey("direction"))
        {
            NBTTagList nbttaglist = par1NBTTagCompound.getTagList("direction");
            this.motionX = ((NBTTagDouble)nbttaglist.tagAt(0)).data;
            this.motionY = ((NBTTagDouble)nbttaglist.tagAt(1)).data;
            this.motionZ = ((NBTTagDouble)nbttaglist.tagAt(2)).data;
        }
        else
        {
            this.setDead();
        }
    }

    /**
     * Returns true if other Entities should be prevented from moving through this Entity.
     */
    public boolean canBeCollidedWith()
    {
        return true;
    }

    public float getCollisionBorderSize()
    {
        return 1.0F;
    }

    /**
     * Called when the entity is attacked.
     */
    public boolean attackEntityFrom(DamageSource par1DamageSource, float par2)
    {
        if (this.isEntityInvulnerable())
        {
            return false;
        }
        else
        {
            this.setBeenAttacked();

            if (par1DamageSource.getEntity() != null)
            {
                Vec3 vec3 = par1DamageSource.getEntity().getLookVec();

                if (vec3 != null)
                {
                    this.motionX = vec3.xCoord;
                    this.motionY = vec3.yCoord;
                    this.motionZ = vec3.zCoord;
                    this.accelerationX = this.motionX * 0.1D;
                    this.accelerationY = this.motionY * 0.1D;
                    this.accelerationZ = this.motionZ * 0.1D;
                }

                if (par1DamageSource.getEntity() instanceof EntityLivingBase)
                {
                    this.shootingEntity = (EntityLivingBase)par1DamageSource.getEntity();
                }

                return true;
            }
            else
            {
                return false;
            }
        }
    }

    @SideOnly(Side.CLIENT)
    public float getShadowSize()
    {
        return 0.0F;
    }

    /**
     * Gets how bright this entity is.
     */
    public float getBrightness(float par1)
    {
        return 1.0F;
    }

    @SideOnly(Side.CLIENT)
    public int getBrightnessForRender(float par1)
    {
        return 15728880;
    }
}
