content: /*
   * SoulFire
   * Copyright (C) 2024  AlexProgrammerDE
   *
   * This program is free software: you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program.  If not, see <https://www.gnu.org/licenses/>.
   */
  package com.soulfiremc.server.pathfinding.graph.actions.movement;
  
  import com.soulfiremc.server.pathfinding.SFVec3i;
  import lombok.Getter;
  import lombok.RequiredArgsConstructor;
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  @RequiredArgsConstructor
  public enum MovementDirection {
    NORTH(new SFVec3i(0, 0, -1), SkyDirection.NORTH, null, ActionDirection.NORTH),
    SOUTH(new SFVec3i(0, 0, 1), SkyDirection.SOUTH, null, ActionDirection.SOUTH),
    EAST(new SFVec3i(1, 0, 0), SkyDirection.EAST, null, ActionDirection.EAST),
    WEST(new SFVec3i(-1, 0, 0), SkyDirection.WEST, null, ActionDirection.WEST),
    NORTH_EAST(new SFVec3i(1, 0, -1), null, DiagonalDirection.NORTH_EAST, ActionDirection.NORTH_EAST),
    NORTH_WEST(new SFVec3i(-1, 0, -1), null, DiagonalDirection.NORTH_WEST, ActionDirection.NORTH_WEST),
    SOUTH_EAST(new SFVec3i(1, 0, 1), null, DiagonalDirection.SOUTH_EAST, ActionDirection.SOUTH_EAST),
    SOUTH_WEST(new SFVec3i(-1, 0, 1), null, DiagonalDirection.SOUTH_WEST, ActionDirection.SOUTH_WEST);
  
    public static final MovementDirection[] VALUES = values();
  
    static {
      NORTH.opposite = SOUTH;
      SOUTH.opposite = NORTH;
      EAST.opposite = WEST;
      WEST.opposite = EAST;
      NORTH_EAST.opposite = SOUTH_WEST;
      NORTH_WEST.opposite = SOUTH_EAST;
      SOUTH_EAST.opposite = NORTH_WEST;
      SOUTH_WEST.opposite = NORTH_EAST;
    }
  
    @Getter
    private final SFVec3i offsetVector;
    @Nullable
    private final SkyDirection skyDirection;
    @Nullable
    private final DiagonalDirection diagonalDirection;
    @Getter
    private final ActionDirection actionDirection;
    @Getter
    private MovementDirection opposite;
  
    public SFVec3i offset(SFVec3i vector) {
      return vector.add(offsetVector);
    }
  
    public SkyDirection toSkyDirection() {
      if (skyDirection == null) {
        throw new IllegalStateException("Unexpected value: " + this);
      }
  
      return skyDirection;
    }
  
    public DiagonalDirection toDiagonalDirection() {
      if (diagonalDirection == null) {
        throw new IllegalStateException("Unexpected value: " + this);
      }
  
      return diagonalDirection;
    }
  
    public boolean isDiagonal() {
      return diagonalDirection != null;
    }
  }
  