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    }