001 package net.minecraft.entity.monster;
002
003 import cpw.mods.fml.relauncher.Side;
004 import cpw.mods.fml.relauncher.SideOnly;
005 import net.minecraft.entity.Entity;
006 import net.minecraft.entity.ai.EntityAIAttackOnCollide;
007 import net.minecraft.entity.ai.EntityAIAvoidEntity;
008 import net.minecraft.entity.ai.EntityAICreeperSwell;
009 import net.minecraft.entity.ai.EntityAIHurtByTarget;
010 import net.minecraft.entity.ai.EntityAILookIdle;
011 import net.minecraft.entity.ai.EntityAINearestAttackableTarget;
012 import net.minecraft.entity.ai.EntityAISwimming;
013 import net.minecraft.entity.ai.EntityAIWander;
014 import net.minecraft.entity.ai.EntityAIWatchClosest;
015 import net.minecraft.entity.effect.EntityLightningBolt;
016 import net.minecraft.entity.passive.EntityOcelot;
017 import net.minecraft.entity.player.EntityPlayer;
018 import net.minecraft.item.Item;
019 import net.minecraft.nbt.NBTTagCompound;
020 import net.minecraft.util.DamageSource;
021 import net.minecraft.world.World;
022
023 public class EntityCreeper extends EntityMob
024 {
025 /**
026 * Time when this creeper was last in an active state (Messed up code here, probably causes creeper animation to go
027 * weird)
028 */
029 private int lastActiveTime;
030
031 /**
032 * The amount of time since the creeper was close enough to the player to ignite
033 */
034 private int timeSinceIgnited;
035 private int fuseTime = 30;
036
037 /** Explosion radius for this creeper. */
038 private int explosionRadius = 3;
039
040 public EntityCreeper(World par1World)
041 {
042 super(par1World);
043 this.texture = "/mob/creeper.png";
044 this.tasks.addTask(1, new EntityAISwimming(this));
045 this.tasks.addTask(2, new EntityAICreeperSwell(this));
046 this.tasks.addTask(3, new EntityAIAvoidEntity(this, EntityOcelot.class, 6.0F, 0.25F, 0.3F));
047 this.tasks.addTask(4, new EntityAIAttackOnCollide(this, 0.25F, false));
048 this.tasks.addTask(5, new EntityAIWander(this, 0.2F));
049 this.tasks.addTask(6, new EntityAIWatchClosest(this, EntityPlayer.class, 8.0F));
050 this.tasks.addTask(6, new EntityAILookIdle(this));
051 this.targetTasks.addTask(1, new EntityAINearestAttackableTarget(this, EntityPlayer.class, 16.0F, 0, true));
052 this.targetTasks.addTask(2, new EntityAIHurtByTarget(this, false));
053 }
054
055 /**
056 * Returns true if the newer Entity AI code should be run
057 */
058 public boolean isAIEnabled()
059 {
060 return true;
061 }
062
063 public int func_82143_as()
064 {
065 return this.getAttackTarget() == null ? 3 : 3 + (this.health - 1);
066 }
067
068 /**
069 * Called when the mob is falling. Calculates and applies fall damage.
070 */
071 protected void fall(float par1)
072 {
073 super.fall(par1);
074 this.timeSinceIgnited = (int)((float)this.timeSinceIgnited + par1 * 1.5F);
075
076 if (this.timeSinceIgnited > this.fuseTime - 5)
077 {
078 this.timeSinceIgnited = this.fuseTime - 5;
079 }
080 }
081
082 public int getMaxHealth()
083 {
084 return 20;
085 }
086
087 protected void entityInit()
088 {
089 super.entityInit();
090 this.dataWatcher.addObject(16, Byte.valueOf((byte) - 1));
091 this.dataWatcher.addObject(17, Byte.valueOf((byte)0));
092 }
093
094 /**
095 * (abstract) Protected helper method to write subclass entity data to NBT.
096 */
097 public void writeEntityToNBT(NBTTagCompound par1NBTTagCompound)
098 {
099 super.writeEntityToNBT(par1NBTTagCompound);
100
101 if (this.dataWatcher.getWatchableObjectByte(17) == 1)
102 {
103 par1NBTTagCompound.setBoolean("powered", true);
104 }
105
106 par1NBTTagCompound.setShort("Fuse", (short)this.fuseTime);
107 par1NBTTagCompound.setByte("ExplosionRadius", (byte)this.explosionRadius);
108 }
109
110 /**
111 * (abstract) Protected helper method to read subclass entity data from NBT.
112 */
113 public void readEntityFromNBT(NBTTagCompound par1NBTTagCompound)
114 {
115 super.readEntityFromNBT(par1NBTTagCompound);
116 this.dataWatcher.updateObject(17, Byte.valueOf((byte)(par1NBTTagCompound.getBoolean("powered") ? 1 : 0)));
117
118 if (par1NBTTagCompound.hasKey("Fuse"))
119 {
120 this.fuseTime = par1NBTTagCompound.getShort("Fuse");
121 }
122
123 if (par1NBTTagCompound.hasKey("ExplosionRadius"))
124 {
125 this.explosionRadius = par1NBTTagCompound.getByte("ExplosionRadius");
126 }
127 }
128
129 /**
130 * Called to update the entity's position/logic.
131 */
132 public void onUpdate()
133 {
134 if (this.isEntityAlive())
135 {
136 this.lastActiveTime = this.timeSinceIgnited;
137 int var1 = this.getCreeperState();
138
139 if (var1 > 0 && this.timeSinceIgnited == 0)
140 {
141 this.playSound("random.fuse", 1.0F, 0.5F);
142 }
143
144 this.timeSinceIgnited += var1;
145
146 if (this.timeSinceIgnited < 0)
147 {
148 this.timeSinceIgnited = 0;
149 }
150
151 if (this.timeSinceIgnited >= this.fuseTime)
152 {
153 this.timeSinceIgnited = this.fuseTime;
154
155 if (!this.worldObj.isRemote)
156 {
157 boolean var2 = this.worldObj.getGameRules().getGameRuleBooleanValue("mobGriefing");
158
159 if (this.getPowered())
160 {
161 this.worldObj.createExplosion(this, this.posX, this.posY, this.posZ, (float)(this.explosionRadius * 2), var2);
162 }
163 else
164 {
165 this.worldObj.createExplosion(this, this.posX, this.posY, this.posZ, (float)this.explosionRadius, var2);
166 }
167
168 this.setDead();
169 }
170 }
171 }
172
173 super.onUpdate();
174 }
175
176 /**
177 * Returns the sound this mob makes when it is hurt.
178 */
179 protected String getHurtSound()
180 {
181 return "mob.creeper.say";
182 }
183
184 /**
185 * Returns the sound this mob makes on death.
186 */
187 protected String getDeathSound()
188 {
189 return "mob.creeper.death";
190 }
191
192 /**
193 * Called when the mob's health reaches 0.
194 */
195 public void onDeath(DamageSource par1DamageSource)
196 {
197 super.onDeath(par1DamageSource);
198
199 if (par1DamageSource.getEntity() instanceof EntitySkeleton)
200 {
201 int var2 = Item.record13.itemID + this.rand.nextInt(Item.recordWait.itemID - Item.record13.itemID + 1);
202 this.dropItem(var2, 1);
203 }
204 }
205
206 public boolean attackEntityAsMob(Entity par1Entity)
207 {
208 return true;
209 }
210
211 /**
212 * Returns true if the creeper is powered by a lightning bolt.
213 */
214 public boolean getPowered()
215 {
216 return this.dataWatcher.getWatchableObjectByte(17) == 1;
217 }
218
219 @SideOnly(Side.CLIENT)
220
221 /**
222 * Params: (Float)Render tick. Returns the intensity of the creeper's flash when it is ignited.
223 */
224 public float getCreeperFlashIntensity(float par1)
225 {
226 return ((float)this.lastActiveTime + (float)(this.timeSinceIgnited - this.lastActiveTime) * par1) / (float)(this.fuseTime - 2);
227 }
228
229 /**
230 * Returns the item ID for the item the mob drops on death.
231 */
232 protected int getDropItemId()
233 {
234 return Item.gunpowder.itemID;
235 }
236
237 /**
238 * Returns the current state of creeper, -1 is idle, 1 is 'in fuse'
239 */
240 public int getCreeperState()
241 {
242 return this.dataWatcher.getWatchableObjectByte(16);
243 }
244
245 /**
246 * Sets the state of creeper, -1 to idle and 1 to be 'in fuse'
247 */
248 public void setCreeperState(int par1)
249 {
250 this.dataWatcher.updateObject(16, Byte.valueOf((byte)par1));
251 }
252
253 /**
254 * Called when a lightning bolt hits the entity.
255 */
256 public void onStruckByLightning(EntityLightningBolt par1EntityLightningBolt)
257 {
258 super.onStruckByLightning(par1EntityLightningBolt);
259 this.dataWatcher.updateObject(17, Byte.valueOf((byte)1));
260 }
261 }