PathfinderGoalAvoidScarecrow.java

package me.greenadine.scarecrow.nms;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.List;

import org.bukkit.entity.Entity;

import com.google.common.base.Predicate;
import com.google.common.base.Predicates;

import net.minecraft.server.v1_12_R1.AxisAlignedBB;
import net.minecraft.server.v1_12_R1.EntityCreature;
import net.minecraft.server.v1_12_R1.EntityLiving;
import net.minecraft.server.v1_12_R1.IEntitySelector;
import net.minecraft.server.v1_12_R1.NavigationAbstract;
import net.minecraft.server.v1_12_R1.PathEntity;
import net.minecraft.server.v1_12_R1.PathfinderGoal;
import net.minecraft.server.v1_12_R1.RandomPositionGenerator;
import net.minecraft.server.v1_12_R1.Vec3D;

public class PathfinderGoalAvoidScarecrow<T extends Entity> extends PathfinderGoal {

    private final Predicate<Entity> c = Predicates.alwaysTrue();

    protected EntityCreature a;

    private final net.minecraft.server.v1_12_R1.World w;

    private final double  d;

    private final double e;

    private final double lastX;
    private final double lastY;
    private final double lastZ;

    protected T b;

    private final float f;
    private PathEntity g;
    private final NavigationAbstract h;
    private final AxisAlignedBB aA;
    private final Class<T> i;
    private Predicate<? super T> j;

    public PathfinderGoalAvoidScarecrow(EntityCreature paramEntityCreature, net.minecraft.server.v1_12_R1.World paramWorld, NavigationAbstract paramNavigationAbstract, AxisAlignedBB paramAxisAlignedBB,
            float paramFloat, double paramDouble1, double paramDouble2, Class<T> paramClass, double paramLastX, double paramLastY, double paramLastZ, Predicate<? super T> paramPredicate)
    {
        a = paramEntityCreature;
        w = paramWorld;
        h = paramNavigationAbstract;
        aA = paramAxisAlignedBB;
        f = paramFloat;
        d = paramDouble1;
        e = paramDouble2;
        i = paramClass;
        j = paramPredicate;
        lastX = paramLastX;
        lastY = paramLastY;
        lastZ = paramLastZ;
    }

    @SuppressWarnings("unchecked")
    public boolean a()
    {
        @SuppressWarnings("rawtypes")
        List localList = (List) w.a((Class) i, aA.grow(f, 3.0D, f), (net.minecraft.server.v1_12_R1.Entity) Predicates.and(new Predicate[] { IEntitySelector.d, c, j }));
        if (localList.isEmpty()) {
            return false;
        }
        b = (T) ((Entity)localList.get(0));

        Vec3D localVec3D = RandomPositionGenerator.b(a, 16, 7, new Vec3D(b.getLocation().getX(), b.getLocation().getY(), b.getLocation().getZ()));
        if (localVec3D == null) {
            return false;
        }

        try {
            Method method = b.getClass().getMethod("c", Double.class, Double.class, Double.class);

            if ((double) method.invoke(lastX, lastY, lastZ) < ((EntityLiving) b).h(a)) {
                return false;
                }
                g = h.a(lastX, lastY, lastZ);
                return g != null;
        } catch(Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    public boolean b()
    {
        return !h.o();
    }

    public void c()
    {
        h.a(g, d);
    }

    public void d()
    {
        b = null;
    }

    public void e()
    {
        try {
            Field field = a.getClass().getDeclaredField("b");
            field.setAccessible(true);
            if (field.getFloat(a) < 49.0D) {
                a.getNavigation().a(e);
            } else {
                a.getNavigation().a(d);
            }
        } catch(Exception e) {
            e.printStackTrace();
        }
    }
}