001 package net.minecraft.src;
002
003 import cpw.mods.fml.common.Side;
004 import cpw.mods.fml.common.asm.SideOnly;
005
006 public class EntitySpider extends EntityMob
007 {
008 public EntitySpider(World par1World)
009 {
010 super(par1World);
011 this.texture = "/mob/spider.png";
012 this.setSize(1.4F, 0.9F);
013 this.moveSpeed = 0.8F;
014 }
015
016 protected void entityInit()
017 {
018 super.entityInit();
019 this.dataWatcher.addObject(16, new Byte((byte)0));
020 }
021
022 /**
023 * Called to update the entity's position/logic.
024 */
025 public void onUpdate()
026 {
027 super.onUpdate();
028
029 if (!this.worldObj.isRemote)
030 {
031 this.setBesideClimbableBlock(this.isCollidedHorizontally);
032 }
033 }
034
035 public int getMaxHealth()
036 {
037 return 16;
038 }
039
040 /**
041 * Returns the Y offset from the entity's position for any entity riding this one.
042 */
043 public double getMountedYOffset()
044 {
045 return (double)this.height * 0.75D - 0.5D;
046 }
047
048 /**
049 * returns if this entity triggers Block.onEntityWalking on the blocks they walk on. used for spiders and wolves to
050 * prevent them from trampling crops
051 */
052 protected boolean canTriggerWalking()
053 {
054 return false;
055 }
056
057 /**
058 * Finds the closest player within 16 blocks to attack, or null if this Entity isn't interested in attacking
059 * (Animals, Spiders at day, peaceful PigZombies).
060 */
061 protected Entity findPlayerToAttack()
062 {
063 float var1 = this.getBrightness(1.0F);
064
065 if (var1 < 0.5F)
066 {
067 double var2 = 16.0D;
068 return this.worldObj.getClosestVulnerablePlayerToEntity(this, var2);
069 }
070 else
071 {
072 return null;
073 }
074 }
075
076 /**
077 * Returns the sound this mob makes while it's alive.
078 */
079 protected String getLivingSound()
080 {
081 return "mob.spider";
082 }
083
084 /**
085 * Returns the sound this mob makes when it is hurt.
086 */
087 protected String getHurtSound()
088 {
089 return "mob.spider";
090 }
091
092 /**
093 * Returns the sound this mob makes on death.
094 */
095 protected String getDeathSound()
096 {
097 return "mob.spiderdeath";
098 }
099
100 /**
101 * Basic mob attack. Default to touch of death in EntityCreature. Overridden by each mob to define their attack.
102 */
103 protected void attackEntity(Entity par1Entity, float par2)
104 {
105 float var3 = this.getBrightness(1.0F);
106
107 if (var3 > 0.5F && this.rand.nextInt(100) == 0)
108 {
109 this.entityToAttack = null;
110 }
111 else
112 {
113 if (par2 > 2.0F && par2 < 6.0F && this.rand.nextInt(10) == 0)
114 {
115 if (this.onGround)
116 {
117 double var4 = par1Entity.posX - this.posX;
118 double var6 = par1Entity.posZ - this.posZ;
119 float var8 = MathHelper.sqrt_double(var4 * var4 + var6 * var6);
120 this.motionX = var4 / (double)var8 * 0.5D * 0.800000011920929D + this.motionX * 0.20000000298023224D;
121 this.motionZ = var6 / (double)var8 * 0.5D * 0.800000011920929D + this.motionZ * 0.20000000298023224D;
122 this.motionY = 0.4000000059604645D;
123 }
124 }
125 else
126 {
127 super.attackEntity(par1Entity, par2);
128 }
129 }
130 }
131
132 /**
133 * Returns the item ID for the item the mob drops on death.
134 */
135 protected int getDropItemId()
136 {
137 return Item.silk.shiftedIndex;
138 }
139
140 /**
141 * Drop 0-2 items of this living's type
142 */
143 protected void dropFewItems(boolean par1, int par2)
144 {
145 super.dropFewItems(par1, par2);
146
147 if (par1 && (this.rand.nextInt(3) == 0 || this.rand.nextInt(1 + par2) > 0))
148 {
149 this.dropItem(Item.spiderEye.shiftedIndex, 1);
150 }
151 }
152
153 /**
154 * returns true if this entity is by a ladder, false otherwise
155 */
156 public boolean isOnLadder()
157 {
158 return this.isBesideClimbableBlock();
159 }
160
161 /**
162 * Sets the Entity inside a web block.
163 */
164 public void setInWeb() {}
165
166 @SideOnly(Side.CLIENT)
167
168 /**
169 * How large the spider should be scaled.
170 */
171 public float spiderScaleAmount()
172 {
173 return 1.0F;
174 }
175
176 /**
177 * Get this Entity's EnumCreatureAttribute
178 */
179 public EnumCreatureAttribute getCreatureAttribute()
180 {
181 return EnumCreatureAttribute.ARTHROPOD;
182 }
183
184 public boolean isPotionApplicable(PotionEffect par1PotionEffect)
185 {
186 return par1PotionEffect.getPotionID() == Potion.poison.id ? false : super.isPotionApplicable(par1PotionEffect);
187 }
188
189 /**
190 * Returns true if the WatchableObject (Byte) is 0x01 otherwise returns false. The WatchableObject is updated using
191 * setBesideClimableBlock.
192 */
193 public boolean isBesideClimbableBlock()
194 {
195 return (this.dataWatcher.getWatchableObjectByte(16) & 1) != 0;
196 }
197
198 /**
199 * Updates the WatchableObject (Byte) created in entityInit(), setting it to 0x01 if par1 is true or 0x00 if it is
200 * false.
201 */
202 public void setBesideClimbableBlock(boolean par1)
203 {
204 byte var2 = this.dataWatcher.getWatchableObjectByte(16);
205
206 if (par1)
207 {
208 var2 = (byte)(var2 | 1);
209 }
210 else
211 {
212 var2 &= -2;
213 }
214
215 this.dataWatcher.updateObject(16, Byte.valueOf(var2));
216 }
217 }