001    package net.minecraft.entity.monster;
002    
003    import net.minecraft.enchantment.EnchantmentHelper;
004    import net.minecraft.entity.Entity;
005    import net.minecraft.entity.EntityCreature;
006    import net.minecraft.entity.EntityLiving;
007    import net.minecraft.entity.player.EntityPlayer;
008    import net.minecraft.potion.Potion;
009    import net.minecraft.util.DamageSource;
010    import net.minecraft.util.MathHelper;
011    import net.minecraft.world.EnumSkyBlock;
012    import net.minecraft.world.World;
013    
014    public abstract class EntityMob extends EntityCreature implements IMob
015    {
016        public EntityMob(World par1World)
017        {
018            super(par1World);
019            this.experienceValue = 5;
020        }
021    
022        /**
023         * Called frequently so the entity can update its state every tick as required. For example, zombies and skeletons
024         * use this to react to sunlight and start to burn.
025         */
026        public void onLivingUpdate()
027        {
028            this.updateArmSwingProgress();
029            float var1 = this.getBrightness(1.0F);
030    
031            if (var1 > 0.5F)
032            {
033                this.entityAge += 2;
034            }
035    
036            super.onLivingUpdate();
037        }
038    
039        /**
040         * Called to update the entity's position/logic.
041         */
042        public void onUpdate()
043        {
044            super.onUpdate();
045    
046            if (!this.worldObj.isRemote && this.worldObj.difficultySetting == 0)
047            {
048                this.setDead();
049            }
050        }
051    
052        /**
053         * Finds the closest player within 16 blocks to attack, or null if this Entity isn't interested in attacking
054         * (Animals, Spiders at day, peaceful PigZombies).
055         */
056        protected Entity findPlayerToAttack()
057        {
058            EntityPlayer var1 = this.worldObj.getClosestVulnerablePlayerToEntity(this, 16.0D);
059            return var1 != null && this.canEntityBeSeen(var1) ? var1 : null;
060        }
061    
062        /**
063         * Called when the entity is attacked.
064         */
065        public boolean attackEntityFrom(DamageSource par1DamageSource, int par2)
066        {
067            if (this.func_85032_ar())
068            {
069                return false;
070            }
071            else if (super.attackEntityFrom(par1DamageSource, par2))
072            {
073                Entity var3 = par1DamageSource.getEntity();
074    
075                if (this.riddenByEntity != var3 && this.ridingEntity != var3)
076                {
077                    if (var3 != this)
078                    {
079                        this.entityToAttack = var3;
080                    }
081    
082                    return true;
083                }
084                else
085                {
086                    return true;
087                }
088            }
089            else
090            {
091                return false;
092            }
093        }
094    
095        public boolean attackEntityAsMob(Entity par1Entity)
096        {
097            int var2 = this.getAttackStrength(par1Entity);
098    
099            if (this.isPotionActive(Potion.damageBoost))
100            {
101                var2 += 3 << this.getActivePotionEffect(Potion.damageBoost).getAmplifier();
102            }
103    
104            if (this.isPotionActive(Potion.weakness))
105            {
106                var2 -= 2 << this.getActivePotionEffect(Potion.weakness).getAmplifier();
107            }
108    
109            int var3 = 0;
110    
111            if (par1Entity instanceof EntityLiving)
112            {
113                var2 += EnchantmentHelper.getEnchantmentModifierLiving(this, (EntityLiving)par1Entity);
114                var3 += EnchantmentHelper.getKnockbackModifier(this, (EntityLiving)par1Entity);
115            }
116    
117            boolean var4 = par1Entity.attackEntityFrom(DamageSource.causeMobDamage(this), var2);
118    
119            if (var4)
120            {
121                if (var3 > 0)
122                {
123                    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));
124                    this.motionX *= 0.6D;
125                    this.motionZ *= 0.6D;
126                }
127    
128                int var5 = EnchantmentHelper.func_90036_a(this);
129    
130                if (var5 > 0)
131                {
132                    par1Entity.setFire(var5 * 4);
133                }
134            }
135    
136            return var4;
137        }
138    
139        /**
140         * Basic mob attack. Default to touch of death in EntityCreature. Overridden by each mob to define their attack.
141         */
142        protected void attackEntity(Entity par1Entity, float par2)
143        {
144            if (this.attackTime <= 0 && par2 < 2.0F && par1Entity.boundingBox.maxY > this.boundingBox.minY && par1Entity.boundingBox.minY < this.boundingBox.maxY)
145            {
146                this.attackTime = 20;
147                this.attackEntityAsMob(par1Entity);
148            }
149        }
150    
151        /**
152         * Takes a coordinate in and returns a weight to determine how likely this creature will try to path to the block.
153         * Args: x, y, z
154         */
155        public float getBlockPathWeight(int par1, int par2, int par3)
156        {
157            return 0.5F - this.worldObj.getLightBrightness(par1, par2, par3);
158        }
159    
160        /**
161         * Checks to make sure the light is not too bright where the mob is spawning
162         */
163        protected boolean isValidLightLevel()
164        {
165            int var1 = MathHelper.floor_double(this.posX);
166            int var2 = MathHelper.floor_double(this.boundingBox.minY);
167            int var3 = MathHelper.floor_double(this.posZ);
168    
169            if (this.worldObj.getSavedLightValue(EnumSkyBlock.Sky, var1, var2, var3) > this.rand.nextInt(32))
170            {
171                return false;
172            }
173            else
174            {
175                int var4 = this.worldObj.getBlockLightValue(var1, var2, var3);
176    
177                if (this.worldObj.isThundering())
178                {
179                    int var5 = this.worldObj.skylightSubtracted;
180                    this.worldObj.skylightSubtracted = 10;
181                    var4 = this.worldObj.getBlockLightValue(var1, var2, var3);
182                    this.worldObj.skylightSubtracted = var5;
183                }
184    
185                return var4 <= this.rand.nextInt(8);
186            }
187        }
188    
189        /**
190         * Checks if the entity's current position is a valid location to spawn this entity.
191         */
192        public boolean getCanSpawnHere()
193        {
194            return this.isValidLightLevel() && super.getCanSpawnHere();
195        }
196    
197        /**
198         * Returns the amount of damage a mob should deal.
199         */
200        public int getAttackStrength(Entity par1Entity)
201        {
202            return 2;
203        }
204    }