package net.minecraft.entity.passive;

import java.util.Calendar;
import net.minecraft.entity.Entity;
import net.minecraft.entity.SharedMonsterAttributes;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.util.ChunkCoordinates;
import net.minecraft.util.DamageSource;
import net.minecraft.util.MathHelper;
import net.minecraft.world.World;

public class EntityBat extends EntityAmbientCreature
{
    /**
     * randomly selected ChunkCoordinates in a 7x6x7 box around the bat (y offset -2 to 4) towards which it will fly.
     * upon getting close a new target will be selected
     */
    private ChunkCoordinates currentFlightTarget;

    public EntityBat(World par1World)
    {
        super(par1World);
        this.setSize(0.5F, 0.9F);
        this.setIsBatHanging(true);
    }

    protected void entityInit()
    {
        super.entityInit();
        this.dataWatcher.addObject(16, new Byte((byte)0));
    }

    /**
     * Returns the volume for the sounds this mob makes.
     */
    protected float getSoundVolume()
    {
        return 0.1F;
    }

    /**
     * Gets the pitch of living sounds in living entities.
     */
    protected float getSoundPitch()
    {
        return super.getSoundPitch() * 0.95F;
    }

    /**
     * Returns the sound this mob makes while it's alive.
     */
    protected String getLivingSound()
    {
        return this.getIsBatHanging() && this.rand.nextInt(4) != 0 ? null : "mob.bat.idle";
    }

    /**
     * Returns the sound this mob makes when it is hurt.
     */
    protected String getHurtSound()
    {
        return "mob.bat.hurt";
    }

    /**
     * Returns the sound this mob makes on death.
     */
    protected String getDeathSound()
    {
        return "mob.bat.death";
    }

    /**
     * Returns true if this entity should push and be pushed by other entities when colliding.
     */
    public boolean canBePushed()
    {
        return false;
    }

    protected void collideWithEntity(Entity par1Entity) {}

    protected void collideWithNearbyEntities() {}

    protected void applyEntityAttributes()
    {
        super.applyEntityAttributes();
        this.getEntityAttribute(SharedMonsterAttributes.maxHealth).setAttribute(6.0D);
    }

    public boolean getIsBatHanging()
    {
        return (this.dataWatcher.getWatchableObjectByte(16) & 1) != 0;
    }

    public void setIsBatHanging(boolean par1)
    {
        byte var2 = this.dataWatcher.getWatchableObjectByte(16);

        if (par1)
        {
            this.dataWatcher.updateObject(16, Byte.valueOf((byte)(var2 | 1)));
        }
        else
        {
            this.dataWatcher.updateObject(16, Byte.valueOf((byte)(var2 & -2)));
        }
    }

    /**
     * Returns true if the newer Entity AI code should be run
     */
    protected boolean isAIEnabled()
    {
        return true;
    }

    /**
     * Called to update the entity's position/logic.
     */
    public void onUpdate()
    {
        super.onUpdate();

        if (this.getIsBatHanging())
        {
            this.motionX = this.motionY = this.motionZ = 0.0D;
            this.posY = (double)MathHelper.floor_double(this.posY) + 1.0D - (double)this.height;
        }
        else
        {
            this.motionY *= 0.6000000238418579D;
        }
    }

    protected void updateAITasks()
    {
        super.updateAITasks();

        if (this.getIsBatHanging())
        {
            if (!this.worldObj.isBlockNormalCube(MathHelper.floor_double(this.posX), (int)this.posY + 1, MathHelper.floor_double(this.posZ)))
            {
                this.setIsBatHanging(false);
                this.worldObj.playAuxSFXAtEntity((EntityPlayer)null, 1015, (int)this.posX, (int)this.posY, (int)this.posZ, 0);
            }
            else
            {
                if (this.rand.nextInt(200) == 0)
                {
                    this.rotationYawHead = (float)this.rand.nextInt(360);
                }

                if (this.worldObj.getClosestPlayerToEntity(this, 4.0D) != null)
                {
                    this.setIsBatHanging(false);
                    this.worldObj.playAuxSFXAtEntity((EntityPlayer)null, 1015, (int)this.posX, (int)this.posY, (int)this.posZ, 0);
                }
            }
        }
        else
        {
            if (this.currentFlightTarget != null && (!this.worldObj.isAirBlock(this.currentFlightTarget.posX, this.currentFlightTarget.posY, this.currentFlightTarget.posZ) || this.currentFlightTarget.posY < 1))
            {
                this.currentFlightTarget = null;
            }

            if (this.currentFlightTarget == null || this.rand.nextInt(30) == 0 || this.currentFlightTarget.getDistanceSquared((int)this.posX, (int)this.posY, (int)this.posZ) < 4.0F)
            {
                this.currentFlightTarget = new ChunkCoordinates((int)this.posX + this.rand.nextInt(7) - this.rand.nextInt(7), (int)this.posY + this.rand.nextInt(6) - 2, (int)this.posZ + this.rand.nextInt(7) - this.rand.nextInt(7));
            }

            double var1 = (double)this.currentFlightTarget.posX + 0.5D - this.posX;
            double var3 = (double)this.currentFlightTarget.posY + 0.1D - this.posY;
            double var5 = (double)this.currentFlightTarget.posZ + 0.5D - this.posZ;
            this.motionX += (Math.signum(var1) * 0.5D - this.motionX) * 0.10000000149011612D;
            this.motionY += (Math.signum(var3) * 0.699999988079071D - this.motionY) * 0.10000000149011612D;
            this.motionZ += (Math.signum(var5) * 0.5D - this.motionZ) * 0.10000000149011612D;
            float var7 = (float)(Math.atan2(this.motionZ, this.motionX) * 180.0D / Math.PI) - 90.0F;
            float var8 = MathHelper.wrapAngleTo180_float(var7 - this.rotationYaw);
            this.moveForward = 0.5F;
            this.rotationYaw += var8;

            if (this.rand.nextInt(100) == 0 && this.worldObj.isBlockNormalCube(MathHelper.floor_double(this.posX), (int)this.posY + 1, MathHelper.floor_double(this.posZ)))
            {
                this.setIsBatHanging(true);
            }
        }
    }

    /**
     * returns if this entity triggers Block.onEntityWalking on the blocks they walk on. used for spiders and wolves to
     * prevent them from trampling crops
     */
    protected boolean canTriggerWalking()
    {
        return false;
    }

    /**
     * Called when the mob is falling. Calculates and applies fall damage.
     */
    protected void fall(float par1) {}

    /**
     * Takes in the distance the entity has fallen this tick and whether its on the ground to update the fall distance
     * and deal fall damage if landing on the ground.  Args: distanceFallenThisTick, onGround
     */
    protected void updateFallState(double par1, boolean par3) {}

    /**
     * Return whether this entity should NOT trigger a pressure plate or a tripwire.
     */
    public boolean doesEntityNotTriggerPressurePlate()
    {
        return true;
    }

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

            return super.attackEntityFrom(par1DamageSource, par2);
        }
    }

    /**
     * (abstract) Protected helper method to read subclass entity data from NBT.
     */
    public void readEntityFromNBT(NBTTagCompound par1NBTTagCompound)
    {
        super.readEntityFromNBT(par1NBTTagCompound);
        this.dataWatcher.updateObject(16, Byte.valueOf(par1NBTTagCompound.getByte("BatFlags")));
    }

    /**
     * (abstract) Protected helper method to write subclass entity data to NBT.
     */
    public void writeEntityToNBT(NBTTagCompound par1NBTTagCompound)
    {
        super.writeEntityToNBT(par1NBTTagCompound);
        par1NBTTagCompound.setByte("BatFlags", this.dataWatcher.getWatchableObjectByte(16));
    }

    /**
     * Checks if the entity's current position is a valid location to spawn this entity.
     */
    public boolean getCanSpawnHere()
    {
        int var1 = MathHelper.floor_double(this.boundingBox.minY);

        if (var1 >= 63)
        {
            return false;
        }
        else
        {
            int var2 = MathHelper.floor_double(this.posX);
            int var3 = MathHelper.floor_double(this.posZ);
            int var4 = this.worldObj.getBlockLightValue(var2, var1, var3);
            byte var5 = 4;
            Calendar var6 = this.worldObj.getCurrentDate();

            if ((var6.get(2) + 1 != 10 || var6.get(5) < 20) && (var6.get(2) + 1 != 11 || var6.get(5) > 3))
            {
                if (this.rand.nextBoolean())
                {
                    return false;
                }
            }
            else
            {
                var5 = 7;
            }

            return var4 > this.rand.nextInt(var5) ? false : super.getCanSpawnHere();
        }
    }
}
