001    package net.minecraft.src;
002    
003    import java.util.Iterator;
004    import java.util.List;
005    
006    public abstract class EntityAnimal extends EntityAgeable implements IAnimals
007    {
008        public int inLove;
009    
010        /**
011         * This is representation of a counter for reproduction progress. (Note that this is different from the inLove which
012         * represent being in Love-Mode)
013         */
014        private int breeding = 0;
015    
016        public EntityAnimal(World par1World)
017        {
018            super(par1World);
019        }
020    
021        /**
022         * main AI tick function, replaces updateEntityActionState
023         */
024        protected void updateAITick()
025        {
026            if (this.getGrowingAge() != 0)
027            {
028                this.inLove = 0;
029            }
030    
031            super.updateAITick();
032        }
033    
034        /**
035         * Called frequently so the entity can update its state every tick as required. For example, zombies and skeletons
036         * use this to react to sunlight and start to burn.
037         */
038        public void onLivingUpdate()
039        {
040            super.onLivingUpdate();
041    
042            if (this.getGrowingAge() != 0)
043            {
044                this.inLove = 0;
045            }
046    
047            if (this.inLove > 0)
048            {
049                --this.inLove;
050                String var1 = "heart";
051    
052                if (this.inLove % 10 == 0)
053                {
054                    double var2 = this.rand.nextGaussian() * 0.02D;
055                    double var4 = this.rand.nextGaussian() * 0.02D;
056                    double var6 = this.rand.nextGaussian() * 0.02D;
057                    this.worldObj.spawnParticle(var1, this.posX + (double)(this.rand.nextFloat() * this.width * 2.0F) - (double)this.width, this.posY + 0.5D + (double)(this.rand.nextFloat() * this.height), this.posZ + (double)(this.rand.nextFloat() * this.width * 2.0F) - (double)this.width, var2, var4, var6);
058                }
059            }
060            else
061            {
062                this.breeding = 0;
063            }
064        }
065    
066        /**
067         * Basic mob attack. Default to touch of death in EntityCreature. Overridden by each mob to define their attack.
068         */
069        protected void attackEntity(Entity par1Entity, float par2)
070        {
071            if (par1Entity instanceof EntityPlayer)
072            {
073                if (par2 < 3.0F)
074                {
075                    double var3 = par1Entity.posX - this.posX;
076                    double var5 = par1Entity.posZ - this.posZ;
077                    this.rotationYaw = (float)(Math.atan2(var5, var3) * 180.0D / Math.PI) - 90.0F;
078                    this.hasAttacked = true;
079                }
080    
081                EntityPlayer var7 = (EntityPlayer)par1Entity;
082    
083                if (var7.getCurrentEquippedItem() == null || !this.isBreedingItem(var7.getCurrentEquippedItem()))
084                {
085                    this.entityToAttack = null;
086                }
087            }
088            else if (par1Entity instanceof EntityAnimal)
089            {
090                EntityAnimal var8 = (EntityAnimal)par1Entity;
091    
092                if (this.getGrowingAge() > 0 && var8.getGrowingAge() < 0)
093                {
094                    if ((double)par2 < 2.5D)
095                    {
096                        this.hasAttacked = true;
097                    }
098                }
099                else if (this.inLove > 0 && var8.inLove > 0)
100                {
101                    if (var8.entityToAttack == null)
102                    {
103                        var8.entityToAttack = this;
104                    }
105    
106                    if (var8.entityToAttack == this && (double)par2 < 3.5D)
107                    {
108                        ++var8.inLove;
109                        ++this.inLove;
110                        ++this.breeding;
111    
112                        if (this.breeding % 4 == 0)
113                        {
114                            this.worldObj.spawnParticle("heart", this.posX + (double)(this.rand.nextFloat() * this.width * 2.0F) - (double)this.width, this.posY + 0.5D + (double)(this.rand.nextFloat() * this.height), this.posZ + (double)(this.rand.nextFloat() * this.width * 2.0F) - (double)this.width, 0.0D, 0.0D, 0.0D);
115                        }
116    
117                        if (this.breeding == 60)
118                        {
119                            this.procreate((EntityAnimal)par1Entity);
120                        }
121                    }
122                    else
123                    {
124                        this.breeding = 0;
125                    }
126                }
127                else
128                {
129                    this.breeding = 0;
130                    this.entityToAttack = null;
131                }
132            }
133        }
134    
135        /**
136         * Creates a baby animal according to the animal type of the target at the actual position and spawns 'love'
137         * particles.
138         */
139        private void procreate(EntityAnimal par1EntityAnimal)
140        {
141            EntityAnimal var2 = this.spawnBabyAnimal(par1EntityAnimal);
142    
143            if (var2 != null)
144            {
145                this.setGrowingAge(6000);
146                par1EntityAnimal.setGrowingAge(6000);
147                this.inLove = 0;
148                this.breeding = 0;
149                this.entityToAttack = null;
150                par1EntityAnimal.entityToAttack = null;
151                par1EntityAnimal.breeding = 0;
152                par1EntityAnimal.inLove = 0;
153                var2.setGrowingAge(-24000);
154                var2.setLocationAndAngles(this.posX, this.posY, this.posZ, this.rotationYaw, this.rotationPitch);
155    
156                for (int var3 = 0; var3 < 7; ++var3)
157                {
158                    double var4 = this.rand.nextGaussian() * 0.02D;
159                    double var6 = this.rand.nextGaussian() * 0.02D;
160                    double var8 = this.rand.nextGaussian() * 0.02D;
161                    this.worldObj.spawnParticle("heart", this.posX + (double)(this.rand.nextFloat() * this.width * 2.0F) - (double)this.width, this.posY + 0.5D + (double)(this.rand.nextFloat() * this.height), this.posZ + (double)(this.rand.nextFloat() * this.width * 2.0F) - (double)this.width, var4, var6, var8);
162                }
163    
164                this.worldObj.spawnEntityInWorld(var2);
165            }
166        }
167    
168        /**
169         * This function is used when two same-species animals in 'love mode' breed to generate the new baby animal.
170         */
171        public abstract EntityAnimal spawnBabyAnimal(EntityAnimal var1);
172    
173        /**
174         * Called when the entity is attacked.
175         */
176        public boolean attackEntityFrom(DamageSource par1DamageSource, int par2)
177        {
178            this.fleeingTick = 60;
179            this.entityToAttack = null;
180            this.inLove = 0;
181            return super.attackEntityFrom(par1DamageSource, par2);
182        }
183    
184        /**
185         * Takes a coordinate in and returns a weight to determine how likely this creature will try to path to the block.
186         * Args: x, y, z
187         */
188        public float getBlockPathWeight(int par1, int par2, int par3)
189        {
190            return this.worldObj.getBlockId(par1, par2 - 1, par3) == Block.grass.blockID ? 10.0F : this.worldObj.getLightBrightness(par1, par2, par3) - 0.5F;
191        }
192    
193        /**
194         * (abstract) Protected helper method to write subclass entity data to NBT.
195         */
196        public void writeEntityToNBT(NBTTagCompound par1NBTTagCompound)
197        {
198            super.writeEntityToNBT(par1NBTTagCompound);
199            par1NBTTagCompound.setInteger("InLove", this.inLove);
200        }
201    
202        /**
203         * (abstract) Protected helper method to read subclass entity data from NBT.
204         */
205        public void readEntityFromNBT(NBTTagCompound par1NBTTagCompound)
206        {
207            super.readEntityFromNBT(par1NBTTagCompound);
208            this.inLove = par1NBTTagCompound.getInteger("InLove");
209        }
210    
211        /**
212         * Finds the closest player within 16 blocks to attack, or null if this Entity isn't interested in attacking
213         * (Animals, Spiders at day, peaceful PigZombies).
214         */
215        protected Entity findPlayerToAttack()
216        {
217            if (this.fleeingTick > 0)
218            {
219                return null;
220            }
221            else
222            {
223                float var1 = 8.0F;
224                List var2;
225                Iterator var3;
226                EntityAnimal var4;
227    
228                if (this.inLove > 0)
229                {
230                    var2 = this.worldObj.getEntitiesWithinAABB(this.getClass(), this.boundingBox.expand((double)var1, (double)var1, (double)var1));
231                    var3 = var2.iterator();
232    
233                    while (var3.hasNext())
234                    {
235                        var4 = (EntityAnimal)var3.next();
236    
237                        if (var4 != this && var4.inLove > 0)
238                        {
239                            return var4;
240                        }
241                    }
242                }
243                else if (this.getGrowingAge() == 0)
244                {
245                    var2 = this.worldObj.getEntitiesWithinAABB(EntityPlayer.class, this.boundingBox.expand((double)var1, (double)var1, (double)var1));
246                    var3 = var2.iterator();
247    
248                    while (var3.hasNext())
249                    {
250                        EntityPlayer var5 = (EntityPlayer)var3.next();
251    
252                        if (var5.getCurrentEquippedItem() != null && this.isBreedingItem(var5.getCurrentEquippedItem()))
253                        {
254                            return var5;
255                        }
256                    }
257                }
258                else if (this.getGrowingAge() > 0)
259                {
260                    var2 = this.worldObj.getEntitiesWithinAABB(this.getClass(), this.boundingBox.expand((double)var1, (double)var1, (double)var1));
261                    var3 = var2.iterator();
262    
263                    while (var3.hasNext())
264                    {
265                        var4 = (EntityAnimal)var3.next();
266    
267                        if (var4 != this && var4.getGrowingAge() < 0)
268                        {
269                            return var4;
270                        }
271                    }
272                }
273    
274                return null;
275            }
276        }
277    
278        /**
279         * Checks if the entity's current position is a valid location to spawn this entity.
280         */
281        public boolean getCanSpawnHere()
282        {
283            int var1 = MathHelper.floor_double(this.posX);
284            int var2 = MathHelper.floor_double(this.boundingBox.minY);
285            int var3 = MathHelper.floor_double(this.posZ);
286            return this.worldObj.getBlockId(var1, var2 - 1, var3) == Block.grass.blockID && this.worldObj.getFullBlockLightValue(var1, var2, var3) > 8 && super.getCanSpawnHere();
287        }
288    
289        /**
290         * Get number of ticks, at least during which the living entity will be silent.
291         */
292        public int getTalkInterval()
293        {
294            return 120;
295        }
296    
297        /**
298         * Determines if an entity can be despawned, used on idle far away entities
299         */
300        protected boolean canDespawn()
301        {
302            return false;
303        }
304    
305        /**
306         * Get the experience points the entity currently has.
307         */
308        protected int getExperiencePoints(EntityPlayer par1EntityPlayer)
309        {
310            return 1 + this.worldObj.rand.nextInt(3);
311        }
312    
313        /**
314         * Checks if the parameter is an item which this animal can be fed to breed it (wheat, carrots or seeds depending on
315         * the animal type)
316         */
317        public boolean isBreedingItem(ItemStack par1ItemStack)
318        {
319            return par1ItemStack.itemID == Item.wheat.shiftedIndex;
320        }
321    
322        /**
323         * Called when a player interacts with a mob. e.g. gets milk from a cow, gets into the saddle on a pig.
324         */
325        public boolean interact(EntityPlayer par1EntityPlayer)
326        {
327            ItemStack var2 = par1EntityPlayer.inventory.getCurrentItem();
328    
329            if (var2 != null && this.isBreedingItem(var2) && this.getGrowingAge() == 0)
330            {
331                if (!par1EntityPlayer.capabilities.isCreativeMode)
332                {
333                    --var2.stackSize;
334    
335                    if (var2.stackSize <= 0)
336                    {
337                        par1EntityPlayer.inventory.setInventorySlotContents(par1EntityPlayer.inventory.currentItem, (ItemStack)null);
338                    }
339                }
340    
341                this.inLove = 600;
342                this.entityToAttack = null;
343    
344                for (int var3 = 0; var3 < 7; ++var3)
345                {
346                    double var4 = this.rand.nextGaussian() * 0.02D;
347                    double var6 = this.rand.nextGaussian() * 0.02D;
348                    double var8 = this.rand.nextGaussian() * 0.02D;
349                    this.worldObj.spawnParticle("heart", this.posX + (double)(this.rand.nextFloat() * this.width * 2.0F) - (double)this.width, this.posY + 0.5D + (double)(this.rand.nextFloat() * this.height), this.posZ + (double)(this.rand.nextFloat() * this.width * 2.0F) - (double)this.width, var4, var6, var8);
350                }
351    
352                return true;
353            }
354            else
355            {
356                return super.interact(par1EntityPlayer);
357            }
358        }
359    
360        /**
361         * Returns if the entity is currently in 'love mode'.
362         */
363        public boolean isInLove()
364        {
365            return this.inLove > 0;
366        }
367    
368        public void resetInLove()
369        {
370            this.inLove = 0;
371        }
372    
373        /**
374         * Returns true if the mob is currently able to mate with the specified mob.
375         */
376        public boolean canMateWith(EntityAnimal par1EntityAnimal)
377        {
378            return par1EntityAnimal == this ? false : (par1EntityAnimal.getClass() != this.getClass() ? false : this.isInLove() && par1EntityAnimal.isInLove());
379        }
380    }