EntityMoveHelper.java

package net.minecraft.entity.ai;

import net.minecraft.entity.EntityLiving;
import net.minecraft.entity.SharedMonsterAttributes;
import net.minecraft.util.MathHelper;

public class EntityMoveHelper
{
    /** The EntityLiving that is being moved */
    protected EntityLiving entity;
    protected double posX;
    protected double posY;
    protected double posZ;

    /** The speed at which the entity should move */
    protected double speed;
    protected boolean update;
    private static final String __OBFID = "CL_00001573";

    public EntityMoveHelper(EntityLiving p_i1614_1_)
    {
        this.entity = p_i1614_1_;
        this.posX = p_i1614_1_.posX;
        this.posY = p_i1614_1_.posY;
        this.posZ = p_i1614_1_.posZ;
    }

    public boolean isUpdating()
    {
        return this.update;
    }

    public double getSpeed()
    {
        return this.speed;
    }

    /**
     * Sets the speed and location to move to
     */
    public void setMoveTo(double p_75642_1_, double p_75642_3_, double p_75642_5_, double p_75642_7_)
    {
        this.posX = p_75642_1_;
        this.posY = p_75642_3_;
        this.posZ = p_75642_5_;
        this.speed = p_75642_7_;
        this.update = true;
    }

    public void onUpdateMoveHelper()
    {
        this.entity.setMoveForward(0.0F);

        if (this.update)
        {
            this.update = false;
            int var1 = MathHelper.floor_double(this.entity.getEntityBoundingBox().minY + 0.5D);
            double var2 = this.posX - this.entity.posX;
            double var4 = this.posZ - this.entity.posZ;
            double var6 = this.posY - (double)var1;
            double var8 = var2 * var2 + var6 * var6 + var4 * var4;

            if (var8 >= 2.500000277905201E-7D)
            {
                float var10 = (float)(Math.atan2(var4, var2) * 180.0D / Math.PI) - 90.0F;
                this.entity.rotationYaw = this.limitAngle(this.entity.rotationYaw, var10, 30.0F);
                this.entity.setAIMoveSpeed((float)(this.speed * this.entity.getEntityAttribute(SharedMonsterAttributes.movementSpeed).getAttributeValue()));

                if (var6 > 0.0D && var2 * var2 + var4 * var4 < 1.0D)
                {
                    this.entity.getJumpHelper().setJumping();
                }
            }
        }
    }

    /**
     * Limits the given angle to a upper and lower limit.
     */
    protected float limitAngle(float p_75639_1_, float p_75639_2_, float p_75639_3_)
    {
        float var4 = MathHelper.wrapAngleTo180_float(p_75639_2_ - p_75639_1_);

        if (var4 > p_75639_3_)
        {
            var4 = p_75639_3_;
        }

        if (var4 < -p_75639_3_)
        {
            var4 = -p_75639_3_;
        }

        float var5 = p_75639_1_ + var4;

        if (var5 < 0.0F)
        {
            var5 += 360.0F;
        }
        else if (var5 > 360.0F)
        {
            var5 -= 360.0F;
        }

        return var5;
    }

    public double func_179917_d()
    {
        return this.posX;
    }

    public double func_179919_e()
    {
        return this.posY;
    }

    public double func_179918_f()
    {
        return this.posZ;
    }
}