package net.minecraft.entity.ai;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLiving;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.util.MathHelper;
public class EntityLookHelper
{
private EntityLiving entity;
/**
* The amount of change that is made each update for an entity facing a direction.
*/
private float deltaLookYaw;
/**
* The amount of change that is made each update for an entity facing a direction.
*/
private float deltaLookPitch;
/** Whether or not the entity is trying to look at something. */
private boolean isLooking;
private double posX;
private double posY;
private double posZ;
private static final String __OBFID = "CL_00001572";
public EntityLookHelper(EntityLiving p_i1613_1_)
{
this.entity = p_i1613_1_;
}
/**
* Sets position to look at using entity
*/
public void setLookPositionWithEntity(Entity p_75651_1_, float p_75651_2_, float p_75651_3_)
{
this.posX = p_75651_1_.posX;
if (p_75651_1_ instanceof EntityLivingBase)
{
this.posY = p_75651_1_.posY + (double)p_75651_1_.getEyeHeight();
}
else
{
this.posY = (p_75651_1_.getEntityBoundingBox().minY + p_75651_1_.getEntityBoundingBox().maxY) / 2.0D;
}
this.posZ = p_75651_1_.posZ;
this.deltaLookYaw = p_75651_2_;
this.deltaLookPitch = p_75651_3_;
this.isLooking = true;
}
/**
* Sets position to look at
*/
public void setLookPosition(double p_75650_1_, double p_75650_3_, double p_75650_5_, float p_75650_7_, float p_75650_8_)
{
this.posX = p_75650_1_;
this.posY = p_75650_3_;
this.posZ = p_75650_5_;
this.deltaLookYaw = p_75650_7_;
this.deltaLookPitch = p_75650_8_;
this.isLooking = true;
}
/**
* Updates look
*/
public void onUpdateLook()
{
this.entity.rotationPitch = 0.0F;
if (this.isLooking)
{
this.isLooking = false;
double var1 = this.posX - this.entity.posX;
double var3 = this.posY - (this.entity.posY + (double)this.entity.getEyeHeight());
double var5 = this.posZ - this.entity.posZ;
double var7 = (double)MathHelper.sqrt_double(var1 * var1 + var5 * var5);
float var9 = (float)(Math.atan2(var5, var1) * 180.0D / Math.PI) - 90.0F;
float var10 = (float)(-(Math.atan2(var3, var7) * 180.0D / Math.PI));
this.entity.rotationPitch = this.updateRotation(this.entity.rotationPitch, var10, this.deltaLookPitch);
this.entity.rotationYawHead = this.updateRotation(this.entity.rotationYawHead, var9, this.deltaLookYaw);
}
else
{
this.entity.rotationYawHead = this.updateRotation(this.entity.rotationYawHead, this.entity.renderYawOffset, 10.0F);
}
float var11 = MathHelper.wrapAngleTo180_float(this.entity.rotationYawHead - this.entity.renderYawOffset);
if (!this.entity.getNavigator().noPath())
{
if (var11 < -75.0F)
{
this.entity.rotationYawHead = this.entity.renderYawOffset - 75.0F;
}
if (var11 > 75.0F)
{
this.entity.rotationYawHead = this.entity.renderYawOffset + 75.0F;
}
}
}
private float updateRotation(float p_75652_1_, float p_75652_2_, float p_75652_3_)
{
float var4 = MathHelper.wrapAngleTo180_float(p_75652_2_ - p_75652_1_);
if (var4 > p_75652_3_)
{
var4 = p_75652_3_;
}
if (var4 < -p_75652_3_)
{
var4 = -p_75652_3_;
}
return p_75652_1_ + var4;
}
public boolean func_180424_b()
{
return this.isLooking;
}
public double func_180423_e()
{
return this.posX;
}
public double func_180422_f()
{
return this.posY;
}
public double func_180421_g()
{
return this.posZ;
}
}