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 }