package net.minecraft.entity;

import net.minecraft.block.Block;
import net.minecraft.item.Item;
import net.minecraft.item.crafting.ItemStack;
import net.minecraft.math.AxisAlignedBB;
import net.minecraft.math.MathHelper;
import net.minecraft.math.Vec3D;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.util.MovingObjectPosition;
import net.minecraft.world.World;

import java.util.List;

public class EntityArrow extends Entity {
    private int xTile = -1;
    private int yTile = -1;
    private int zTile = -1;
    private int inTile = 0;
    private int field_28011_h = 0;
    private boolean inGround = false;
    public boolean field_28012_a = false;
    public int arrowShake = 0;
    public EntityLiving owner;
    private int ticksInGround;
    private int ticksInAir = 0;

    public EntityArrow(World var1) {
        super(var1);
        this.setSize(0.5F, 0.5F);
    }

    public EntityArrow(World var1, double var2, double var4, double var6) {
        super(var1);
        this.setSize(0.5F, 0.5F);
        this.setPosition(var2, var4, var6);
        this.yOffset = 0.0F;
    }

    public EntityArrow(World var1, EntityLiving var2) {
        super(var1);
        this.owner = var2;
        this.field_28012_a = var2 instanceof EntityPlayer;
        this.setSize(0.5F, 0.5F);
        this.setLocationAndAngles(var2.posX, var2.posY + (double) var2.getEyeHeight(), var2.posZ, var2.rotationYaw, var2.rotationPitch);
        this.posX -= (double) (MathHelper.cos(this.rotationYaw / 180.0F * (float) Math.PI) * 0.16F);
        this.posY -= (double) 0.1F;
        this.posZ -= (double) (MathHelper.sin(this.rotationYaw / 180.0F * (float) Math.PI) * 0.16F);
        this.setPosition(this.posX, this.posY, this.posZ);
        this.yOffset = 0.0F;
        this.motionX = (double) (-MathHelper.sin(this.rotationYaw / 180.0F * (float) Math.PI) * MathHelper.cos(this.rotationPitch / 180.0F * (float) Math.PI));
        this.motionZ = (double) (MathHelper.cos(this.rotationYaw / 180.0F * (float) Math.PI) * MathHelper.cos(this.rotationPitch / 180.0F * (float) Math.PI));
        this.motionY = (double) (-MathHelper.sin(this.rotationPitch / 180.0F * (float) Math.PI));
        this.setArrowHeading(this.motionX, this.motionY, this.motionZ, 1.5F, 1.0F);
    }

    protected void entityInit() {
    }

    public void setArrowHeading(double var1, double var3, double var5, float var7, float var8) {
        float var9 = MathHelper.sqrt_double(var1 * var1 + var3 * var3 + var5 * var5);
        var1 /= (double) var9;
        var3 /= (double) var9;
        var5 /= (double) var9;
        var1 += this.rand.nextGaussian() * (double) 0.0075F * (double) var8;
        var3 += this.rand.nextGaussian() * (double) 0.0075F * (double) var8;
        var5 += this.rand.nextGaussian() * (double) 0.0075F * (double) var8;
        var1 *= (double) var7;
        var3 *= (double) var7;
        var5 *= (double) var7;
        this.motionX = var1;
        this.motionY = var3;
        this.motionZ = var5;
        float var10 = MathHelper.sqrt_double(var1 * var1 + var5 * var5);
        this.prevRotationYaw = this.rotationYaw = (float) (Math.atan2(var1, var5) * 180.0D / (double) ((float) Math.PI));
        this.prevRotationPitch = this.rotationPitch = (float) (Math.atan2(var3, (double) var10) * 180.0D / (double) ((float) Math.PI));
        this.ticksInGround = 0;
    }

    public void onUpdate() {
        super.onUpdate();
        if (this.prevRotationPitch == 0.0F && this.prevRotationYaw == 0.0F) {
            float var1 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionZ * this.motionZ);
            this.prevRotationYaw = this.rotationYaw = (float) (Math.atan2(this.motionX, this.motionZ) * 180.0D / (double) ((float) Math.PI));
            this.prevRotationPitch = this.rotationPitch = (float) (Math.atan2(this.motionY, (double) var1) * 180.0D / (double) ((float) Math.PI));
        }

        int var15 = this.worldObj.getBlockId(this.xTile, this.yTile, this.zTile);
        if (var15 > 0) {
            Block.blocksList[var15].setBlockBoundsBasedOnState(this.worldObj, this.xTile, this.yTile, this.zTile);
            AxisAlignedBB var2 = Block.blocksList[var15].getCollisionBoundingBoxFromPool(this.worldObj, this.xTile, this.yTile, this.zTile);
            if (var2 != null && var2.isVecInXYZ(Vec3D.createVector(this.posX, this.posY, this.posZ))) {
                this.inGround = true;
            }
        }

        if (this.arrowShake > 0) {
            --this.arrowShake;
        }

        if (this.inGround) {
            var15 = this.worldObj.getBlockId(this.xTile, this.yTile, this.zTile);
            int var18 = this.worldObj.getBlockMetadata(this.xTile, this.yTile, this.zTile);
            if (var15 == this.inTile && var18 == this.field_28011_h) {
                ++this.ticksInGround;
                if (this.ticksInGround == 1200) {
                    this.setEntityDead();
                }

            } 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;
            Vec3D var16 = Vec3D.createVector(this.posX, this.posY, this.posZ);
            Vec3D var17 = Vec3D.createVector(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ);
            MovingObjectPosition var3 = this.worldObj.func_28099_a(var16, var17, false, true);
            var16 = Vec3D.createVector(this.posX, this.posY, this.posZ);
            var17 = Vec3D.createVector(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ);
            if (var3 != null) {
                var17 = Vec3D.createVector(var3.hitVec.xCoord, var3.hitVec.yCoord, var3.hitVec.zCoord);
            }

            Entity var4 = null;
            List var5 = this.worldObj.getEntitiesWithinAABBExcludingEntity(this, this.boundingBox.addCoord(this.motionX, this.motionY, this.motionZ).expand(1.0D, 1.0D, 1.0D));
            double var6 = 0.0D;

            float var10;
            for (int var8 = 0; var8 < var5.size(); ++var8) {
                Entity var9 = (Entity) var5.get(var8);
                if (var9.canBeCollidedWith() && (var9 != this.owner || this.ticksInAir >= 5)) {
                    var10 = 0.3F;
                    AxisAlignedBB var11 = var9.boundingBox.expand((double) var10, (double) var10, (double) var10);
                    MovingObjectPosition var12 = var11.func_706_a(var16, var17);
                    if (var12 != null) {
                        double var13 = var16.distanceTo(var12.hitVec);
                        if (var13 < var6 || var6 == 0.0D) {
                            var4 = var9;
                            var6 = var13;
                        }
                    }
                }
            }

            if (var4 != null) {
                var3 = new MovingObjectPosition(var4);
            }

            float var19;
            if (var3 != null) {
                if (var3.entityHit != null) {
                    if (var3.entityHit.attackEntityFrom(this.owner, 4)) {
                        this.worldObj.playSoundAtEntity(this, "random.drr", 1.0F, 1.2F / (this.rand.nextFloat() * 0.2F + 0.9F));
                        this.setEntityDead();
                    } else {
                        this.motionX *= (double) -0.1F;
                        this.motionY *= (double) -0.1F;
                        this.motionZ *= (double) -0.1F;
                        this.rotationYaw += 180.0F;
                        this.prevRotationYaw += 180.0F;
                        this.ticksInAir = 0;
                    }
                } else {
                    this.xTile = var3.blockX;
                    this.yTile = var3.blockY;
                    this.zTile = var3.blockZ;
                    this.inTile = this.worldObj.getBlockId(this.xTile, this.yTile, this.zTile);
                    this.field_28011_h = this.worldObj.getBlockMetadata(this.xTile, this.yTile, this.zTile);
                    this.motionX = (double) ((float) (var3.hitVec.xCoord - this.posX));
                    this.motionY = (double) ((float) (var3.hitVec.yCoord - this.posY));
                    this.motionZ = (double) ((float) (var3.hitVec.zCoord - this.posZ));
                    var19 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionY * this.motionY + this.motionZ * this.motionZ);
                    this.posX -= this.motionX / (double) var19 * (double) 0.05F;
                    this.posY -= this.motionY / (double) var19 * (double) 0.05F;
                    this.posZ -= this.motionZ / (double) var19 * (double) 0.05F;
                    this.worldObj.playSoundAtEntity(this, "random.drr", 1.0F, 1.2F / (this.rand.nextFloat() * 0.2F + 0.9F));
                    this.inGround = true;
                    this.arrowShake = 7;
                }
            }

            this.posX += this.motionX;
            this.posY += this.motionY;
            this.posZ += this.motionZ;
            var19 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionZ * this.motionZ);
            this.rotationYaw = (float) (Math.atan2(this.motionX, this.motionZ) * 180.0D / (double) ((float) Math.PI));

            for (this.rotationPitch = (float) (Math.atan2(this.motionY, (double) var19) * 180.0D / (double) ((float) 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 var20 = 0.99F;
            var10 = 0.03F;
            if (this.isInWater()) {
                for (int var21 = 0; var21 < 4; ++var21) {
                    float var22 = 0.25F;
                    this.worldObj.spawnParticle("bubble", this.posX - this.motionX * (double) var22, this.posY - this.motionY * (double) var22, this.posZ - this.motionZ * (double) var22, this.motionX, this.motionY, this.motionZ);
                }

                var20 = 0.8F;
            }

            this.motionX *= (double) var20;
            this.motionY *= (double) var20;
            this.motionZ *= (double) var20;
            this.motionY -= (double) var10;
            this.setPosition(this.posX, this.posY, this.posZ);
        }
    }

    public void writeEntityToNBT(NBTTagCompound var1) {
        var1.setShort("xTile", (short) this.xTile);
        var1.setShort("yTile", (short) this.yTile);
        var1.setShort("zTile", (short) this.zTile);
        var1.setByte("inTile", (byte) this.inTile);
        var1.setByte("inData", (byte) this.field_28011_h);
        var1.setByte("shake", (byte) this.arrowShake);
        var1.setByte("inGround", (byte) (this.inGround ? 1 : 0));
        var1.setBoolean("player", this.field_28012_a);
    }

    public void readEntityFromNBT(NBTTagCompound var1) {
        this.xTile = var1.getShort("xTile");
        this.yTile = var1.getShort("yTile");
        this.zTile = var1.getShort("zTile");
        this.inTile = var1.getByte("inTile") & 255;
        this.field_28011_h = var1.getByte("inData") & 255;
        this.arrowShake = var1.getByte("shake") & 255;
        this.inGround = var1.getByte("inGround") == 1;
        this.field_28012_a = var1.getBoolean("player");
    }

    public void onCollideWithPlayer(EntityPlayer var1) {
        if (!this.worldObj.singleplayerWorld) {
            if (this.inGround && this.field_28012_a && this.arrowShake <= 0 && var1.inventory.addItemStackToInventory(new ItemStack(Item.arrow, 1))) {
                this.worldObj.playSoundAtEntity(this, "random.pop", 0.2F, ((this.rand.nextFloat() - this.rand.nextFloat()) * 0.7F + 1.0F) * 2.0F);
                var1.onItemPickup(this, 1);
                this.setEntityDead();
            }

        }
    }
}