001 package net.minecraft.entity.monster;
002
003 import net.minecraft.enchantment.EnchantmentHelper;
004 import net.minecraft.enchantment.EnchantmentThorns;
005 import net.minecraft.entity.Entity;
006 import net.minecraft.entity.EntityCreature;
007 import net.minecraft.entity.EntityLiving;
008 import net.minecraft.entity.player.EntityPlayer;
009 import net.minecraft.potion.Potion;
010 import net.minecraft.util.DamageSource;
011 import net.minecraft.util.MathHelper;
012 import net.minecraft.world.EnumSkyBlock;
013 import net.minecraft.world.World;
014
015 public abstract class EntityMob extends EntityCreature implements IMob
016 {
017 public EntityMob(World par1World)
018 {
019 super(par1World);
020 this.experienceValue = 5;
021 }
022
023 /**
024 * Called frequently so the entity can update its state every tick as required. For example, zombies and skeletons
025 * use this to react to sunlight and start to burn.
026 */
027 public void onLivingUpdate()
028 {
029 this.updateArmSwingProgress();
030 float var1 = this.getBrightness(1.0F);
031
032 if (var1 > 0.5F)
033 {
034 this.entityAge += 2;
035 }
036
037 super.onLivingUpdate();
038 }
039
040 /**
041 * Called to update the entity's position/logic.
042 */
043 public void onUpdate()
044 {
045 super.onUpdate();
046
047 if (!this.worldObj.isRemote && this.worldObj.difficultySetting == 0)
048 {
049 this.setDead();
050 }
051 }
052
053 /**
054 * Finds the closest player within 16 blocks to attack, or null if this Entity isn't interested in attacking
055 * (Animals, Spiders at day, peaceful PigZombies).
056 */
057 protected Entity findPlayerToAttack()
058 {
059 EntityPlayer var1 = this.worldObj.getClosestVulnerablePlayerToEntity(this, 16.0D);
060 return var1 != null && this.canEntityBeSeen(var1) ? var1 : null;
061 }
062
063 /**
064 * Called when the entity is attacked.
065 */
066 public boolean attackEntityFrom(DamageSource par1DamageSource, int par2)
067 {
068 if (this.isEntityInvulnerable())
069 {
070 return false;
071 }
072 else if (super.attackEntityFrom(par1DamageSource, par2))
073 {
074 Entity var3 = par1DamageSource.getEntity();
075
076 if (this.riddenByEntity != var3 && this.ridingEntity != var3)
077 {
078 if (var3 != this)
079 {
080 this.entityToAttack = var3;
081 }
082
083 return true;
084 }
085 else
086 {
087 return true;
088 }
089 }
090 else
091 {
092 return false;
093 }
094 }
095
096 public boolean attackEntityAsMob(Entity par1Entity)
097 {
098 int var2 = this.getAttackStrength(par1Entity);
099
100 if (this.isPotionActive(Potion.damageBoost))
101 {
102 var2 += 3 << this.getActivePotionEffect(Potion.damageBoost).getAmplifier();
103 }
104
105 if (this.isPotionActive(Potion.weakness))
106 {
107 var2 -= 2 << this.getActivePotionEffect(Potion.weakness).getAmplifier();
108 }
109
110 int var3 = 0;
111
112 if (par1Entity instanceof EntityLiving)
113 {
114 var2 += EnchantmentHelper.getEnchantmentModifierLiving(this, (EntityLiving)par1Entity);
115 var3 += EnchantmentHelper.getKnockbackModifier(this, (EntityLiving)par1Entity);
116 }
117
118 boolean var4 = par1Entity.attackEntityFrom(DamageSource.causeMobDamage(this), var2);
119
120 if (var4)
121 {
122 if (var3 > 0)
123 {
124 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));
125 this.motionX *= 0.6D;
126 this.motionZ *= 0.6D;
127 }
128
129 int var5 = EnchantmentHelper.getFireAspectModifier(this);
130
131 if (var5 > 0)
132 {
133 par1Entity.setFire(var5 * 4);
134 }
135
136 if (par1Entity instanceof EntityLiving)
137 {
138 EnchantmentThorns.func_92044_a(this, (EntityLiving)par1Entity, this.rand);
139 }
140 }
141
142 return var4;
143 }
144
145 /**
146 * Basic mob attack. Default to touch of death in EntityCreature. Overridden by each mob to define their attack.
147 */
148 protected void attackEntity(Entity par1Entity, float par2)
149 {
150 if (this.attackTime <= 0 && par2 < 2.0F && par1Entity.boundingBox.maxY > this.boundingBox.minY && par1Entity.boundingBox.minY < this.boundingBox.maxY)
151 {
152 this.attackTime = 20;
153 this.attackEntityAsMob(par1Entity);
154 }
155 }
156
157 /**
158 * Takes a coordinate in and returns a weight to determine how likely this creature will try to path to the block.
159 * Args: x, y, z
160 */
161 public float getBlockPathWeight(int par1, int par2, int par3)
162 {
163 return 0.5F - this.worldObj.getLightBrightness(par1, par2, par3);
164 }
165
166 /**
167 * Checks to make sure the light is not too bright where the mob is spawning
168 */
169 protected boolean isValidLightLevel()
170 {
171 int var1 = MathHelper.floor_double(this.posX);
172 int var2 = MathHelper.floor_double(this.boundingBox.minY);
173 int var3 = MathHelper.floor_double(this.posZ);
174
175 if (this.worldObj.getSavedLightValue(EnumSkyBlock.Sky, var1, var2, var3) > this.rand.nextInt(32))
176 {
177 return false;
178 }
179 else
180 {
181 int var4 = this.worldObj.getBlockLightValue(var1, var2, var3);
182
183 if (this.worldObj.isThundering())
184 {
185 int var5 = this.worldObj.skylightSubtracted;
186 this.worldObj.skylightSubtracted = 10;
187 var4 = this.worldObj.getBlockLightValue(var1, var2, var3);
188 this.worldObj.skylightSubtracted = var5;
189 }
190
191 return var4 <= this.rand.nextInt(8);
192 }
193 }
194
195 /**
196 * Checks if the entity's current position is a valid location to spawn this entity.
197 */
198 public boolean getCanSpawnHere()
199 {
200 return this.isValidLightLevel() && super.getCanSpawnHere();
201 }
202
203 /**
204 * Returns the amount of damage a mob should deal.
205 */
206 public int getAttackStrength(Entity par1Entity)
207 {
208 return 2;
209 }
210 }