001    package net.minecraft.src;
002    
003    public abstract class EntityMob extends EntityCreature implements IMob
004    {
005        public EntityMob(World par1World)
006        {
007            super(par1World);
008            this.experienceValue = 5;
009        }
010    
011        /**
012         * Called frequently so the entity can update its state every tick as required. For example, zombies and skeletons
013         * use this to react to sunlight and start to burn.
014         */
015        public void onLivingUpdate()
016        {
017            this.updateArmSwingProgress();
018            float var1 = this.getBrightness(1.0F);
019    
020            if (var1 > 0.5F)
021            {
022                this.entityAge += 2;
023            }
024    
025            super.onLivingUpdate();
026        }
027    
028        /**
029         * Called to update the entity's position/logic.
030         */
031        public void onUpdate()
032        {
033            super.onUpdate();
034    
035            if (!this.worldObj.isRemote && this.worldObj.difficultySetting == 0)
036            {
037                this.setDead();
038            }
039        }
040    
041        /**
042         * Finds the closest player within 16 blocks to attack, or null if this Entity isn't interested in attacking
043         * (Animals, Spiders at day, peaceful PigZombies).
044         */
045        protected Entity findPlayerToAttack()
046        {
047            EntityPlayer var1 = this.worldObj.getClosestVulnerablePlayerToEntity(this, 16.0D);
048            return var1 != null && this.canEntityBeSeen(var1) ? var1 : null;
049        }
050    
051        /**
052         * Called when the entity is attacked.
053         */
054        public boolean attackEntityFrom(DamageSource par1DamageSource, int par2)
055        {
056            if (this.func_85032_ar())
057            {
058                return false;
059            }
060            else if (super.attackEntityFrom(par1DamageSource, par2))
061            {
062                Entity var3 = par1DamageSource.getEntity();
063    
064                if (this.riddenByEntity != var3 && this.ridingEntity != var3)
065                {
066                    if (var3 != this)
067                    {
068                        this.entityToAttack = var3;
069                    }
070    
071                    return true;
072                }
073                else
074                {
075                    return true;
076                }
077            }
078            else
079            {
080                return false;
081            }
082        }
083    
084        public boolean attackEntityAsMob(Entity par1Entity)
085        {
086            int var2 = this.getAttackStrength(par1Entity);
087    
088            if (this.isPotionActive(Potion.damageBoost))
089            {
090                var2 += 3 << this.getActivePotionEffect(Potion.damageBoost).getAmplifier();
091            }
092    
093            if (this.isPotionActive(Potion.weakness))
094            {
095                var2 -= 2 << this.getActivePotionEffect(Potion.weakness).getAmplifier();
096            }
097    
098            int var3 = 0;
099    
100            if (par1Entity instanceof EntityLiving)
101            {
102                var2 += EnchantmentHelper.getEnchantmentModifierLiving(this, (EntityLiving)par1Entity);
103                var3 += EnchantmentHelper.getKnockbackModifier(this, (EntityLiving)par1Entity);
104            }
105    
106            boolean var4 = par1Entity.attackEntityFrom(DamageSource.causeMobDamage(this), var2);
107    
108            if (var4)
109            {
110                if (var3 > 0)
111                {
112                    par1Entity.addVelocity((double)(-MathHelper.sin(this.rotationYaw * (float)Math.PI / 180.0F) * (float)var3 * 0.5F), 0.1D, (double)(MathHelper.cos(this.rotationYaw * (float)Math.PI / 180.0F) * (float)var3 * 0.5F));
113                    this.motionX *= 0.6D;
114                    this.motionZ *= 0.6D;
115                }
116    
117                int var5 = EnchantmentHelper.getFireAspectModifier(this, (EntityLiving)par1Entity);
118    
119                if (var5 > 0)
120                {
121                    par1Entity.setFire(var5 * 4);
122                }
123            }
124    
125            return var4;
126        }
127    
128        /**
129         * Basic mob attack. Default to touch of death in EntityCreature. Overridden by each mob to define their attack.
130         */
131        protected void attackEntity(Entity par1Entity, float par2)
132        {
133            if (this.attackTime <= 0 && par2 < 2.0F && par1Entity.boundingBox.maxY > this.boundingBox.minY && par1Entity.boundingBox.minY < this.boundingBox.maxY)
134            {
135                this.attackTime = 20;
136                this.attackEntityAsMob(par1Entity);
137            }
138        }
139    
140        /**
141         * Takes a coordinate in and returns a weight to determine how likely this creature will try to path to the block.
142         * Args: x, y, z
143         */
144        public float getBlockPathWeight(int par1, int par2, int par3)
145        {
146            return 0.5F - this.worldObj.getLightBrightness(par1, par2, par3);
147        }
148    
149        /**
150         * Checks to make sure the light is not too bright where the mob is spawning
151         */
152        protected boolean isValidLightLevel()
153        {
154            int var1 = MathHelper.floor_double(this.posX);
155            int var2 = MathHelper.floor_double(this.boundingBox.minY);
156            int var3 = MathHelper.floor_double(this.posZ);
157    
158            if (this.worldObj.getSavedLightValue(EnumSkyBlock.Sky, var1, var2, var3) > this.rand.nextInt(32))
159            {
160                return false;
161            }
162            else
163            {
164                int var4 = this.worldObj.getBlockLightValue(var1, var2, var3);
165    
166                if (this.worldObj.isThundering())
167                {
168                    int var5 = this.worldObj.skylightSubtracted;
169                    this.worldObj.skylightSubtracted = 10;
170                    var4 = this.worldObj.getBlockLightValue(var1, var2, var3);
171                    this.worldObj.skylightSubtracted = var5;
172                }
173    
174                return var4 <= this.rand.nextInt(8);
175            }
176        }
177    
178        /**
179         * Checks if the entity's current position is a valid location to spawn this entity.
180         */
181        public boolean getCanSpawnHere()
182        {
183            return this.isValidLightLevel() && super.getCanSpawnHere();
184        }
185    
186        /**
187         * Returns the amount of damage a mob should deal.
188         */
189        public int getAttackStrength(Entity par1Entity)
190        {
191            return 2;
192        }
193    }