package net.minecraft.world.entity.ai.goal;

import java.util.EnumSet;
import javax.annotation.Nullable;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.entity.TamableAnimal;
import net.minecraft.world.entity.ai.navigation.FlyingPathNavigation;
import net.minecraft.world.entity.ai.navigation.GroundPathNavigation;
import net.minecraft.world.entity.ai.navigation.PathNavigation;
import net.minecraft.world.level.pathfinder.PathType;

public class FollowOwnerGoal extends Goal {
    private final TamableAnimal tamable;
    @Nullable
    private LivingEntity owner;
    private final double speedModifier;
    private final PathNavigation navigation;
    private int timeToRecalcPath;
    private final float stopDistance;
    private final float startDistance;
    private float oldWaterCost;

    public FollowOwnerGoal(TamableAnimal p_25294_, double p_25295_, float p_25296_, float p_25297_) {
        this.tamable = p_25294_;
        this.speedModifier = p_25295_;
        this.navigation = p_25294_.getNavigation();
        this.startDistance = p_25296_;
        this.stopDistance = p_25297_;
        this.setFlags(EnumSet.of(Goal.Flag.MOVE, Goal.Flag.LOOK));
        if (!(p_25294_.getNavigation() instanceof GroundPathNavigation) && !(p_25294_.getNavigation() instanceof FlyingPathNavigation)) {
            throw new IllegalArgumentException("Unsupported mob type for FollowOwnerGoal");
        }
    }

    @Override
    public boolean canUse() {
        LivingEntity livingentity = this.tamable.getOwner();
        if (livingentity == null) {
            return false;
        } else if (this.tamable.unableToMoveToOwner()) {
            return false;
        } else if (this.tamable.distanceToSqr(livingentity) < this.startDistance * this.startDistance) {
            return false;
        } else {
            this.owner = livingentity;
            return true;
        }
    }

    @Override
    public boolean canContinueToUse() {
        if (this.navigation.isDone()) {
            return false;
        } else {
            return this.tamable.unableToMoveToOwner() ? false : !(this.tamable.distanceToSqr(this.owner) <= this.stopDistance * this.stopDistance);
        }
    }

    @Override
    public void start() {
        this.timeToRecalcPath = 0;
        this.oldWaterCost = this.tamable.getPathfindingMalus(PathType.WATER);
        this.tamable.setPathfindingMalus(PathType.WATER, 0.0F);
    }

    @Override
    public void stop() {
        this.owner = null;
        this.navigation.stop();
        this.tamable.setPathfindingMalus(PathType.WATER, this.oldWaterCost);
    }

    @Override
    public void tick() {
        boolean flag = this.tamable.shouldTryTeleportToOwner();
        if (!flag) {
            this.tamable.getLookControl().setLookAt(this.owner, 10.0F, this.tamable.getMaxHeadXRot());
        }

        if (--this.timeToRecalcPath <= 0) {
            this.timeToRecalcPath = this.adjustedTickDelay(10);
            if (flag) {
                this.tamable.tryToTeleportToOwner();
            } else {
                this.navigation.moveTo(this.owner, this.speedModifier);
            }
        }
    }
}