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java.lang.NullPointerException
at net.minecraft.src.NetClientHandler.handleMobSpawn(NetClientHandler.java:743)
at net.minecraft.src.Packet24MobSpawn.processPacket(Packet24MobSpawn.java:137)
at net.minecraft.src.MemoryConnection.processReadPackets(MemoryConnection.java:70)
at net.minecraft.src.NetClientHandler.processReadPackets(NetClientHandler.java:90)
at net.minecraft.src.WorldClient.tick(WorldClient.java:63)
at net.minecraft.client.Minecraft.runTick(Minecraft.java:1760)
at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:821)
at net.minecraft.client.Minecraft.run(Minecraft.java:751)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT 48e0183d ----------

package net.minecraft.src;
import java.util.Map;
import java.util.Random;
import java.util.*;

public class mod_more extends BaseMod
{

public void load()
{
// Boar
//register the entity
ModLoader.registerEntityID(EntityBoar.class, "Boar", ModLoader.getUniqueEntityId());

ModLoader.addSpawn("Boar", 3, 0, 5, EnumCreatureType.creature, new BiomeGenBase[] {
BiomeGenBase.plains,
});




}

public String getVersion()
{
return "Realms Mod Version 1.0";
}

public void addRenderer(Map map)
{
map.put(EntityBoar.class, new RenderBoar(new ModelBoar(), 0.5F));
}


}

package net.minecraft.src;


public class RenderBoar extends RenderLiving
{

public RenderBoar(ModelBase modelbase, float f)
{
super(modelbase, f);
}

public void func_177_a(EntityBoar entityboar, double d, double d1, double d2,
float f, float f1)
{
super.doRenderLiving(entityboar, d, d1, d2, f, f1);
}

public void doRenderLiving(EntityLiving entityliving, double d, double d1, double d2,
float f, float f1)
{
func_177_a((EntityBoar)entityliving, d, d1, d2, f, f1);
}

public void doRender(Entity entity, double d, double d1, double d2, float f, float f1)
{
func_177_a((EntityBoar)entity, d, d1, d2, f, f1);
}
}

package net.minecraft.src;

public class ModelBoar extends ModelBase
{
//fields
ModelRenderer head;
ModelRenderer body;
ModelRenderer leg1;
ModelRenderer leg2;
ModelRenderer leg3;
ModelRenderer leg4;
ModelRenderer horn1;
ModelRenderer horn2;

public ModelBoar()
{
textureWidth = 80;
textureHeight = 40;
 
      head = new ModelRenderer(this, 0, 0);
      head.addBox(-4F, -4F, -8F, 8, 8, 8);
      head.setRotationPoint(0F, 11F, -6F);
      head.setTextureSize(80, 40);
      head.mirror = true;
      setRotation(head, 0F, 0F, 0F);
      body = new ModelRenderer(this, 32, 0);
      body.addBox(-5F, -10F, -7F, 10, 16, 8);
      body.setRotationPoint(0F, 10F, 3F);
      body.setTextureSize(80, 40);
      body.mirror = true;
      setRotation(body, 1.570796F, 0F, 0F);
      leg1 = new ModelRenderer(this, 0, 16);
      leg1.addBox(-2F, 0F, -2F, 4, 7, 4);
      leg1.setRotationPoint(-3F, 17F, 7F);
      leg1.setTextureSize(80, 40);
      leg1.mirror = true;
      setRotation(leg1, 0F, 0F, 0F);
      leg2 = new ModelRenderer(this, 0, 16);
      leg2.addBox(-2F, 0F, -2F, 4, 7, 4);
      leg2.setRotationPoint(3F, 17F, 7F);
      leg2.setTextureSize(80, 40);
      leg2.mirror = true;
      setRotation(leg2, 0F, 0F, 0F);
      leg3 = new ModelRenderer(this, 0, 16);
      leg3.addBox(-2F, 0F, -2F, 4, 7, 4);
      leg3.setRotationPoint(-3F, 17F, -5F);
      leg3.setTextureSize(80, 40);
      leg3.mirror = true;
      setRotation(leg3, 0F, 0F, 0F);
      leg4 = new ModelRenderer(this, 0, 16);
      leg4.addBox(-2F, 0F, -2F, 4, 7, 4);
      leg4.setRotationPoint(3F, 17F, -5F);
      leg4.setTextureSize(80, 40);
      leg4.mirror = true;
      setRotation(leg4, 0F, 0F, 0F);
      horn1 = new ModelRenderer(this, 16, 16);
      horn1.addBox(-2.8F, -6F, -7F, 1, 2, 1);
      horn1.setRotationPoint(0F, 11F, -6F);
      horn1.setTextureSize(80, 40);
      horn1.mirror = true;
      setRotation(horn1, 0F, 0F, -0.3346075F);
      horn2 = new ModelRenderer(this, 16, 16);
      horn2.addBox(1.933333F, -6F, -7F, 1, 2, 1);
      horn2.setRotationPoint(0F, 11F, -6F);
      horn2.setTextureSize(80, 40);
      horn2.mirror = true;
      setRotation(horn2, 0F, 0F, 0.3346075F);
}

public void render(Entity entity, float f, float f1, float f2, float f3, float f4, float f5)
{
super.render(entity, f, f1, f2, f3, f4, f5);
setRotationAngles(f, f1, f2, f3, f4, f5);
head.render(f5);
body.render(f5);
leg1.render(f5);
leg2.render(f5);
leg3.render(f5);
leg4.render(f5);
horn1.render(f5);
horn2.render(f5);
}

private void setRotation(ModelRenderer model, float x, float y, float z)
{
model.rotateAngleX = x;
model.rotateAngleY = y;
model.rotateAngleZ = z;
}

public void setRotationAngles(float par1, float par2, float par3, float par4, float par5, float par6)
{
this.head.rotateAngleX = par5 / (180F / (float)Math.PI);
this.head.rotateAngleY = par4 / (180F / (float)Math.PI);
this.horn1.rotateAngleX = par5 / (180F / (float)Math.PI);
this.horn1.rotateAngleY = par4 / (180F / (float)Math.PI);
this.horn2.rotateAngleX = par5 / (180F / (float)Math.PI);
this.horn2.rotateAngleY = par4 / (180F / (float)Math.PI);
this.body.rotateAngleX = ((float)Math.PI / 2F);
this.leg1.rotateAngleX = MathHelper.cos(par1 * 0.6662F) * 1.4F * par2;
this.leg2.rotateAngleX = MathHelper.cos(par1 * 0.6662F + (float)Math.PI) * 1.4F * par2;
this.leg3.rotateAngleX = MathHelper.cos(par1 * 0.6662F + (float)Math.PI) * 1.4F * par2;
this.leg4.rotateAngleX = MathHelper.cos(par1 * 0.6662F) * 1.4F * par2;
}

}

package net.minecraft.src;

import java.util.Random;

public class EntityBoar extends EntityAnimal
{
public EntityBoar(World world)
{

super(world);
texture = "/more/Boar.png";
setSize(1.5F, 1.9F); // this sets the hit area of the mob
getNavigator().setAvoidsWater(true);
tasks.addTask(0, new EntityAISwimming(this));
tasks.addTask(1, new EntityAIPanic(this, 0.38F));
tasks.addTask(2, new EntityAIMate(this, 0.2F));
tasks.addTask(3, new EntityAITempt(this, 0.25F, Item.wheat.shiftedIndex, false));
tasks.addTask(4, new EntityAIFollowParent(this, 0.25F));
tasks.addTask(5, new EntityAIWander(this, 0.2F));
tasks.addTask(6, new EntityAIWatchClosest(this, net.minecraft.src.EntityPlayer.class, 6F));
tasks.addTask(7, new EntityAILookIdle(this));
}


public boolean isAIEnabled()
{
return true;
}

public void writeEntityToNBT(NBTTagCompound nbttagcompound)
{
super.writeEntityToNBT(nbttagcompound); // this saves the mob to disk
}

public void readEntityFromNBT(NBTTagCompound nbttagcompound)
{
super.readEntityFromNBT(nbttagcompound); // this loads the mob from disk
}

/**
* Returns the sound this mob makes while it's alive.
*/
protected String getLivingSound()
{
return "mob.pig";
}

/**
* Returns the sound this mob makes when it is hurt.
*/
protected String getHurtSound()
{

return "mob.pig";
}

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

/**
* Returns the volume for the sounds this mob makes.
*/
protected float getSoundVolume()
{
return 0.4F;
}

/**
* Returns the item ID for the item the mob drops on death.
*/
protected int getDropItemId()
{
return Item.leather.shiftedIndex;
}

@Override
public EntityAnimal spawnBabyAnimal(EntityAnimal entityanimal) {
return new EntityBoar(worldObj);// TODO Auto-generated method stub

}

@Override
public int getMaxHealth() {
// TODO Auto-generated method stub
return 10;
}
}