001package net.minecraft.entity.ai;
002
003import java.util.Iterator;
004import java.util.List;
005import java.util.Random;
006import net.minecraft.entity.EntityAgeable;
007import net.minecraft.entity.item.EntityXPOrb;
008import net.minecraft.entity.passive.EntityAnimal;
009import net.minecraft.world.World;
010
011public class EntityAIMate extends EntityAIBase
012{
013    private EntityAnimal theAnimal;
014    World theWorld;
015    private EntityAnimal targetMate;
016
017    /**
018     * Delay preventing a baby from spawning immediately when two mate-able animals find each other.
019     */
020    int spawnBabyDelay = 0;
021
022    /** The speed the creature moves at during mating behavior. */
023    float moveSpeed;
024
025    public EntityAIMate(EntityAnimal par1EntityAnimal, float par2)
026    {
027        this.theAnimal = par1EntityAnimal;
028        this.theWorld = par1EntityAnimal.worldObj;
029        this.moveSpeed = par2;
030        this.setMutexBits(3);
031    }
032
033    /**
034     * Returns whether the EntityAIBase should begin execution.
035     */
036    public boolean shouldExecute()
037    {
038        if (!this.theAnimal.isInLove())
039        {
040            return false;
041        }
042        else
043        {
044            this.targetMate = this.getNearbyMate();
045            return this.targetMate != null;
046        }
047    }
048
049    /**
050     * Returns whether an in-progress EntityAIBase should continue executing
051     */
052    public boolean continueExecuting()
053    {
054        return this.targetMate.isEntityAlive() && this.targetMate.isInLove() && this.spawnBabyDelay < 60;
055    }
056
057    /**
058     * Resets the task
059     */
060    public void resetTask()
061    {
062        this.targetMate = null;
063        this.spawnBabyDelay = 0;
064    }
065
066    /**
067     * Updates the task
068     */
069    public void updateTask()
070    {
071        this.theAnimal.getLookHelper().setLookPositionWithEntity(this.targetMate, 10.0F, (float)this.theAnimal.getVerticalFaceSpeed());
072        this.theAnimal.getNavigator().tryMoveToEntityLiving(this.targetMate, this.moveSpeed);
073        ++this.spawnBabyDelay;
074
075        if (this.spawnBabyDelay == 60)
076        {
077            this.spawnBaby();
078        }
079    }
080
081    /**
082     * Loops through nearby animals and finds another animal of the same type that can be mated with. Returns the first
083     * valid mate found.
084     */
085    private EntityAnimal getNearbyMate()
086    {
087        float var1 = 8.0F;
088        List var2 = this.theWorld.getEntitiesWithinAABB(this.theAnimal.getClass(), this.theAnimal.boundingBox.expand((double)var1, (double)var1, (double)var1));
089        Iterator var3 = var2.iterator();
090        EntityAnimal var4;
091
092        do
093        {
094            if (!var3.hasNext())
095            {
096                return null;
097            }
098
099            var4 = (EntityAnimal)var3.next();
100        }
101        while (!this.theAnimal.canMateWith(var4));
102
103        return var4;
104    }
105
106    /**
107     * Spawns a baby animal of the same type.
108     */
109    private void spawnBaby()
110    {
111        EntityAgeable var1 = this.theAnimal.createChild(this.targetMate);
112
113        if (var1 != null)
114        {
115            this.theAnimal.setGrowingAge(6000);
116            this.targetMate.setGrowingAge(6000);
117            this.theAnimal.resetInLove();
118            this.targetMate.resetInLove();
119            var1.setGrowingAge(-24000);
120            var1.setLocationAndAngles(this.theAnimal.posX, this.theAnimal.posY, this.theAnimal.posZ, 0.0F, 0.0F);
121            this.theWorld.spawnEntityInWorld(var1);
122            Random var2 = this.theAnimal.getRNG();
123
124            for (int var3 = 0; var3 < 7; ++var3)
125            {
126                double var4 = var2.nextGaussian() * 0.02D;
127                double var6 = var2.nextGaussian() * 0.02D;
128                double var8 = var2.nextGaussian() * 0.02D;
129                this.theWorld.spawnParticle("heart", this.theAnimal.posX + (double)(var2.nextFloat() * this.theAnimal.width * 2.0F) - (double)this.theAnimal.width, this.theAnimal.posY + 0.5D + (double)(var2.nextFloat() * this.theAnimal.height), this.theAnimal.posZ + (double)(var2.nextFloat() * this.theAnimal.width * 2.0F) - (double)this.theAnimal.width, var4, var6, var8);
130            }
131
132            this.theWorld.spawnEntityInWorld(new EntityXPOrb(this.theWorld, this.theAnimal.posX, this.theAnimal.posY, this.theAnimal.posZ, var2.nextInt(7) + 1));
133        }
134    }
135}