001    package net.minecraft.entity.projectile;
002    
003    import cpw.mods.fml.relauncher.Side;
004    import cpw.mods.fml.relauncher.SideOnly;
005    import net.minecraft.block.Block;
006    import net.minecraft.entity.EntityLiving;
007    import net.minecraft.potion.Potion;
008    import net.minecraft.potion.PotionEffect;
009    import net.minecraft.util.DamageSource;
010    import net.minecraft.util.MovingObjectPosition;
011    import net.minecraft.world.Explosion;
012    import net.minecraft.world.World;
013    
014    public class EntityWitherSkull extends EntityFireball
015    {
016        public EntityWitherSkull(World par1World)
017        {
018            super(par1World);
019            this.setSize(0.3125F, 0.3125F);
020        }
021    
022        public EntityWitherSkull(World par1World, EntityLiving par2EntityLiving, double par3, double par5, double par7)
023        {
024            super(par1World, par2EntityLiving, par3, par5, par7);
025            this.setSize(0.3125F, 0.3125F);
026        }
027    
028        /**
029         * Return the motion factor for this projectile. The factor is multiplied by the original motion.
030         */
031        protected float getMotionFactor()
032        {
033            return this.isInvulnerable() ? 0.73F : super.getMotionFactor();
034        }
035    
036        @SideOnly(Side.CLIENT)
037        public EntityWitherSkull(World par1World, double par2, double par4, double par6, double par8, double par10, double par12)
038        {
039            super(par1World, par2, par4, par6, par8, par10, par12);
040            this.setSize(0.3125F, 0.3125F);
041        }
042    
043        /**
044         * Returns true if the entity is on fire. Used by render to add the fire effect on rendering.
045         */
046        public boolean isBurning()
047        {
048            return false;
049        }
050    
051        public float func_82146_a(Explosion par1Explosion, Block par2Block, int par3, int par4, int par5)
052        {
053            float var6 = super.func_82146_a(par1Explosion, par2Block, par3, par4, par5);
054    
055            if (this.isInvulnerable() && par2Block != Block.bedrock && par2Block != Block.endPortal && par2Block != Block.endPortalFrame)
056            {
057                var6 = Math.min(0.8F, var6);
058            }
059    
060            return var6;
061        }
062    
063        /**
064         * Called when this EntityFireball hits a block or entity.
065         */
066        protected void onImpact(MovingObjectPosition par1MovingObjectPosition)
067        {
068            if (!this.worldObj.isRemote)
069            {
070                if (par1MovingObjectPosition.entityHit != null)
071                {
072                    if (this.shootingEntity != null)
073                    {
074                        if (par1MovingObjectPosition.entityHit.attackEntityFrom(DamageSource.causeMobDamage(this.shootingEntity), 8) && !par1MovingObjectPosition.entityHit.isEntityAlive())
075                        {
076                            this.shootingEntity.heal(5);
077                        }
078                    }
079                    else
080                    {
081                        par1MovingObjectPosition.entityHit.attackEntityFrom(DamageSource.magic, 5);
082                    }
083    
084                    if (par1MovingObjectPosition.entityHit instanceof EntityLiving)
085                    {
086                        byte var2 = 0;
087    
088                        if (this.worldObj.difficultySetting > 1)
089                        {
090                            if (this.worldObj.difficultySetting == 2)
091                            {
092                                var2 = 10;
093                            }
094                            else if (this.worldObj.difficultySetting == 3)
095                            {
096                                var2 = 40;
097                            }
098                        }
099    
100                        if (var2 > 0)
101                        {
102                            ((EntityLiving)par1MovingObjectPosition.entityHit).addPotionEffect(new PotionEffect(Potion.wither.id, 20 * var2, 1));
103                        }
104                    }
105                }
106    
107                this.worldObj.newExplosion(this, this.posX, this.posY, this.posZ, 1.0F, false, this.worldObj.getGameRules().getGameRuleBooleanValue("mobGriefing"));
108                this.setDead();
109            }
110        }
111    
112        /**
113         * Returns true if other Entities should be prevented from moving through this Entity.
114         */
115        public boolean canBeCollidedWith()
116        {
117            return false;
118        }
119    
120        /**
121         * Called when the entity is attacked.
122         */
123        public boolean attackEntityFrom(DamageSource par1DamageSource, int par2)
124        {
125            return false;
126        }
127    
128        protected void entityInit()
129        {
130            this.dataWatcher.addObject(10, Byte.valueOf((byte)0));
131        }
132    
133        /**
134         * Return whether this skull comes from an invulnerable (aura) wither boss.
135         */
136        public boolean isInvulnerable()
137        {
138            return this.dataWatcher.getWatchableObjectByte(10) == 1;
139        }
140    
141        /**
142         * Set whether this skull comes from an invulnerable (aura) wither boss.
143         */
144        public void setInvulnerable(boolean par1)
145        {
146            this.dataWatcher.updateObject(10, Byte.valueOf((byte)(par1 ? 1 : 0)));
147        }
148    }