SteeringSystem.java

package com.hypixel.hytale.server.npc.systems;

import com.hypixel.hytale.component.ArchetypeChunk;
import com.hypixel.hytale.component.CommandBuffer;
import com.hypixel.hytale.component.ComponentType;
import com.hypixel.hytale.component.Ref;
import com.hypixel.hytale.component.RemoveReason;
import com.hypixel.hytale.component.Store;
import com.hypixel.hytale.component.dependency.Dependency;
import com.hypixel.hytale.component.dependency.Order;
import com.hypixel.hytale.component.dependency.SystemDependency;
import com.hypixel.hytale.component.query.Query;
import com.hypixel.hytale.logger.HytaleLogger;
import com.hypixel.hytale.math.vector.Vector3d;
import com.hypixel.hytale.server.core.entity.knockback.KnockbackSystems;
import com.hypixel.hytale.server.core.modules.entity.component.TransformComponent;
import com.hypixel.hytale.server.core.modules.entity.system.TransformSystems;
import com.hypixel.hytale.server.core.modules.physics.util.PhysicsMath;
import com.hypixel.hytale.server.core.universe.world.storage.EntityStore;
import com.hypixel.hytale.server.npc.NPCPlugin;
import com.hypixel.hytale.server.npc.entities.NPCEntity;
import com.hypixel.hytale.server.npc.role.Role;
import java.util.Set;
import java.util.logging.Level;
import javax.annotation.Nonnull;

public class SteeringSystem extends SteppableTickingSystem {
   @Nonnull
   private final ComponentType<EntityStore, NPCEntity> npcEntityComponent;
   @Nonnull
   private final Set<Dependency<EntityStore>> dependencies;
   @Nonnull
   private final Query<EntityStore> query;

   public SteeringSystem(@Nonnull ComponentType<EntityStore, NPCEntity> npcEntityComponent) {
      this.npcEntityComponent = npcEntityComponent;
      this.dependencies = Set.of(new SystemDependency(Order.AFTER, AvoidanceSystem.class), new SystemDependency(Order.AFTER, KnockbackSystems.ApplyKnockback.class), new SystemDependency(Order.BEFORE, TransformSystems.EntityTrackerUpdate.class));
      this.query = Query.<EntityStore>and(npcEntityComponent);
   }

   @Nonnull
   public Set<Dependency<EntityStore>> getDependencies() {
      return this.dependencies;
   }

   public boolean isParallel(int archetypeChunkSize, int taskCount) {
      return false;
   }

   @Nonnull
   public Query<EntityStore> getQuery() {
      return this.query;
   }

   public void steppedTick(float dt, int index, @Nonnull ArchetypeChunk<EntityStore> archetypeChunk, @Nonnull Store<EntityStore> store, @Nonnull CommandBuffer<EntityStore> commandBuffer) {
      NPCEntity npc = (NPCEntity)archetypeChunk.getComponent(index, this.npcEntityComponent);

      assert npc != null;

      TransformComponent npcTransformComponent = (TransformComponent)archetypeChunk.getComponent(index, TransformComponent.getComponentType());

      assert npcTransformComponent != null;

      Role role = npc.getRole();
      Ref<EntityStore> ref = archetypeChunk.getReferenceTo(index);

      try {
         if (role.getDebugSupport().isDebugMotionSteering()) {
            Vector3d position = npcTransformComponent.getPosition();
            double x = position.getX();
            double z = position.getZ();
            float yaw = npcTransformComponent.getRotation().getYaw();
            role.getActiveMotionController().steer(ref, role, role.getBodySteering(), role.getHeadSteering(), (double)dt, commandBuffer);
            x = position.getX() - x;
            z = position.getZ() - z;
            double l = Math.sqrt(x * x + z * z);
            double v = l / (double)dt;
            double vx = x / (double)dt;
            double vz = z / (double)dt;
            double vh = l > 0.0 ? (double)PhysicsMath.normalizeTurnAngle(PhysicsMath.headingFromDirection(x, z)) : 0.0;
            NPCPlugin.get().getLogger().at(Level.FINER).log("=   Role    = t =%.4f v =%.4f vx=%.4f vz=%.4f h =%.4f nh=%.4f vh=%.4f", dt, v, vx, vz, 57.295776F * yaw, 57.295776F * yaw, 57.2957763671875 * vh);
         } else {
            role.getActiveMotionController().steer(ref, role, role.getBodySteering(), role.getHeadSteering(), (double)dt, commandBuffer);
         }
      } catch (IllegalStateException | IllegalArgumentException e) {
         ((HytaleLogger.Api)NPCPlugin.get().getLogger().at(Level.SEVERE).withCause(e)).log();
         commandBuffer.removeEntity(archetypeChunk.getReferenceTo(index), RemoveReason.REMOVE);
      }

   }
}