class="kw">package com.hypixel.hytale.server.core.modules.entity.item;

class="kw">import com.hypixel.hytale.component.ArchetypeChunk;
class="kw">import com.hypixel.hytale.component.CommandBuffer;
class="kw">import com.hypixel.hytale.component.ComponentType;
class="kw">import com.hypixel.hytale.component.RemoveReason;
class="kw">import com.hypixel.hytale.component.Store;
class="kw">import com.hypixel.hytale.component.query.Query;
class="kw">import com.hypixel.hytale.component.system.tick.EntityTickingSystem;
class="kw">import com.hypixel.hytale.logger.HytaleLogger;
class="kw">import com.hypixel.hytale.math.shape.Box;
class="kw">import com.hypixel.hytale.math.vector.Vector3dUtil;
class="kw">import com.hypixel.hytale.server.core.modules.collision.BlockCollisionData;
class="kw">import com.hypixel.hytale.server.core.modules.collision.CollisionModule;
class="kw">import com.hypixel.hytale.server.core.modules.collision.CollisionResult;
class="kw">import com.hypixel.hytale.server.core.modules.entity.component.BoundingBox;
class="kw">import com.hypixel.hytale.server.core.modules.entity.component.TransformComponent;
class="kw">import com.hypixel.hytale.server.core.modules.physics.component.Velocity;
class="kw">import com.hypixel.hytale.server.core.universe.world.World;
class="kw">import com.hypixel.hytale.server.core.universe.world.storage.EntityStore;
class="kw">import java.util.logging.Level;
class="kw">import javax.annotation.Nonnull;
class="kw">import org.joml.Vector3d;

class="kw">public class ItemPhysicsSystem class="kw">extends EntityTickingSystem<EntityStore> {
   @Nonnull
   class="kw">private class="kw">static class="kw">final HytaleLogger LOGGER = HytaleLogger.forEnclosingClass();
   @Nonnull
   class="kw">private class="kw">final ComponentType<EntityStore, ItemPhysicsComponent> itemPhysicsComponentType;
   @Nonnull
   class="kw">private class="kw">final ComponentType<EntityStore, BoundingBox> boundingBoxComponentType;
   @Nonnull
   class="kw">private class="kw">final ComponentType<EntityStore, Velocity> velocityComponentType;
   @Nonnull
   class="kw">private class="kw">final ComponentType<EntityStore, TransformComponent> transformComponentType;
   @Nonnull
   class="kw">private class="kw">final Query<EntityStore> query;

   class="kw">public ItemPhysicsSystem(
      @Nonnull ComponentType<EntityStore, ItemPhysicsComponent> var1,
      @Nonnull ComponentType<EntityStore, Velocity> var2,
      @Nonnull ComponentType<EntityStore, BoundingBox> var3
   ) {
      this.itemPhysicsComponentType = var1;
      this.velocityComponentType = var2;
      this.boundingBoxComponentType = var3;
      this.transformComponentType = TransformComponent.getComponentType();
      this.query = Query.and(var1, var3, var2, this.transformComponentType);
   }

   @Nonnull
   @Override
   class="kw">public Query<EntityStore> getQuery() {
      class="kw">return this.query;
   }

   @Override
   class="kw">public boolean isParallel(int var1, int var2) {
      class="kw">return false;
   }

   @Override
   class="kw">public void tick(float var1, int var2, @Nonnull ArchetypeChunk<EntityStore> var3, @Nonnull Store<EntityStore> var4, @Nonnull CommandBuffer<EntityStore> var5) {
      World var6 = var4.getExternalData().getWorld();
      ItemPhysicsComponent var7 = var3.getComponent(var2, this.itemPhysicsComponentType);
      assert var7 != null;
      Velocity var8 = var3.getComponent(var2, this.velocityComponentType);
      assert var8 != null;
      TransformComponent var9 = var3.getComponent(var2, this.transformComponentType);
      assert var9 != null;
      Vector3d var10 = var9.getPosition();
      Vector3d var11 = var7.scaledVelocity;
      CollisionResult var12 = var7.collisionResult;
      var8.assignVelocityTo(var11).mul(var1);
      BoundingBox var13 = var3.getComponent(var2, this.boundingBoxComponentType);
      assert var13 != null;
      Box var14 = var13.getBoundingBox();
      if (CollisionModule.isBelowMovementThreshold(var11)) {
         CollisionModule.findBlockCollisionsShortDistance(var6, var14, var10, var11, var12);
      } else {
         CollisionModule.findBlockCollisionsIterative(var6, var14, var10, var11, true, var12);
      }

      BlockCollisionData var15 = var12.getFirstBlockCollision();
      if (var15 != null) {
         if (var15.collisionNormal.equals(Vector3dUtil.UP)) {
            var8.setZero();
            var10.set(var15.collisionPoint);
         } else {
            Vector3d var16 = var8.getVelocity();
            double var17 = var16.dot(var15.collisionNormal);
            Vector3d var19 = new Vector3d(var15.collisionNormal).mul(var17);
            var16.sub(var19);
         }
      } else {
         var8.assignVelocityTo(var11).mul(var1);
         var10.add(var11);
      }

      var12.reset();
      if (var10.y() < -32.0) {
         LOGGER.at(Level.WARNING).log("Item fell out of the world %s", var3.getReferenceTo(var2));
         var5.removeEntity(var3.getReferenceTo(var2), RemoveReason.REMOVE);
      }
   }
}