BloodMagic/src/main/java/WayofTime/alchemicalWizardry/common/demonVillage/ai/EntityAIOccasionalRangedAttack.java

package WayofTime.alchemicalWizardry.common.demonVillage.ai;

import net.minecraft.entity.EntityLiving;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.ai.EntityAIBase;
import net.minecraft.util.MathHelper;

public class EntityAIOccasionalRangedAttack extends EntityAIBase
{
    /** The entity the AI instance has been applied to */
    private final EntityLiving entityHost;
    /** The entity (as a RangedAttackMob) the AI instance has been applied to. */
    private final IOccasionalRangedAttackMob rangedAttackEntityHost;
    private EntityLivingBase attackTarget;
    /**
     * A decrementing tick that spawns a ranged attack once this value reaches 0. It is then set back to the
     * maxRangedAttackTime.
     */
    private int rangedAttackTime;
    private double entityMoveSpeed;
    private int field_75318_f;
    private int field_96561_g;
    /** The maximum time the AI has to wait before peforming another ranged attack. */
    private int maxRangedAttackTime;
    private float field_96562_i;
    private float field_82642_h;
    private double range;

    public EntityAIOccasionalRangedAttack(IOccasionalRangedAttackMob p_i1649_1_, double p_i1649_2_, int p_i1649_4_, float p_i1649_5_, double range)
    {
        this(p_i1649_1_, p_i1649_2_, p_i1649_4_, p_i1649_4_, p_i1649_5_, range);
    }

    public EntityAIOccasionalRangedAttack(IOccasionalRangedAttackMob p_i1650_1_, double p_i1650_2_, int p_i1650_4_, int p_i1650_5_, float p_i1650_6_, double range)
    {
        this.rangedAttackTime = -1;

        if (!(p_i1650_1_ instanceof EntityLivingBase))
        {
            throw new IllegalArgumentException("ArrowAttackGoal requires Mob implements RangedAttackMob");
        }
        else
        {
            this.rangedAttackEntityHost = p_i1650_1_;
            this.entityHost = (EntityLiving)p_i1650_1_;
            this.entityMoveSpeed = p_i1650_2_;
            this.field_96561_g = p_i1650_4_;
            this.maxRangedAttackTime = p_i1650_5_;
            this.field_96562_i = p_i1650_6_;
            this.field_82642_h = p_i1650_6_ * p_i1650_6_;
            this.setMutexBits(3);
            this.range = range;
        }
    }

    /**
     * Returns whether the EntityAIBase should begin execution.
     */
    public boolean shouldExecute()
    {
        EntityLivingBase entitylivingbase = this.entityHost.getAttackTarget();

        if (entitylivingbase == null)
        {
            return false;
        }
        else if(this.rangedAttackEntityHost.shouldUseRangedAttack() && this.isInRange(entitylivingbase))
        {
            this.attackTarget = entitylivingbase;
            return true;
        }else
        {
        	return false;
        }
    }

    /**
     * Returns whether an in-progress EntityAIBase should continue executing
     */
    public boolean continueExecuting()
    {
        return this.shouldExecute() || !this.entityHost.getNavigator().noPath() && this.rangedAttackEntityHost.shouldUseRangedAttack();
    }
    
    public boolean isInRange(EntityLivingBase target)
    {
    	double xf = target.posX;
		double yf = target.posY;
		double zf = target.posZ;
		
		double xi = this.entityHost.posX;
		double yi = this.entityHost.posY;
		double zi = this.entityHost.posZ;
    	return (xi-xf)*(xi-xf) + (yi-yf)*(yi-yf) + (zi-zf)*(zi-zf) >= range*range;
    }

    /**
     * Resets the task
     */
    public void resetTask()
    {
        this.attackTarget = null;
        this.field_75318_f = 0;
        this.rangedAttackTime = -1;
    }

    /**
     * Updates the task
     */
    public void updateTask()
    {
        double d0 = this.entityHost.getDistanceSq(this.attackTarget.posX, this.attackTarget.getBoundingBox().minY, this.attackTarget.posZ);
        boolean flag = this.entityHost.getEntitySenses().canSee(this.attackTarget);

        if (flag)
        {
            ++this.field_75318_f;
        }
        else
        {
            this.field_75318_f = 0;
        }

        if (d0 <= (double)this.field_82642_h && this.field_75318_f >= 20)
        {
            this.entityHost.getNavigator().clearPathEntity();
        }
        else
        {
            this.entityHost.getNavigator().tryMoveToEntityLiving(this.attackTarget, this.entityMoveSpeed);
        }

        this.entityHost.getLookHelper().setLookPositionWithEntity(this.attackTarget, 30.0F, 30.0F);
        float f;

        if (--this.rangedAttackTime == 0)
        {
            if (d0 > (double)this.field_82642_h || !flag)
            {
                return;
            }

            f = MathHelper.sqrt_double(d0) / this.field_96562_i;
            float f1 = f;

            if (f < 0.1F)
            {
                f1 = 0.1F;
            }

            if (f1 > 1.0F)
            {
                f1 = 1.0F;
            }

            this.rangedAttackEntityHost.attackEntityWithRangedAttack(this.attackTarget, f1);
            this.rangedAttackTime = MathHelper.floor_float(f * (float)(this.maxRangedAttackTime - this.field_96561_g) + (float)this.field_96561_g);
        }
        else if (this.rangedAttackTime < 0)
        {
            f = MathHelper.sqrt_double(d0) / this.field_96562_i;
            this.rangedAttackTime = MathHelper.floor_float(f * (float)(this.maxRangedAttackTime - this.field_96561_g) + (float)this.field_96561_g);
        }
    }
}