using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using Unity.Mathematics;

namespace GamecraftModdingAPI.Blocks
{
    /// <summary>
    /// Common block movement operations.
    /// The functionality of this class only works in build mode.
    /// </summary>
    public static class Movement
    {
        private static MovementEngine movementEngine = new MovementEngine();

        /// <summary>
        /// Move a single block by a specific (x,y,z) amount (offset).
        /// The moved block will remain connected to the blocks it was touching before it was moved.
        /// The block's placement grid and collision box are also moved.
        /// </summary>
        /// <param name="id">The block's id</param>
        /// <param name="vector">The movement amount (x,y,z)</param>
        /// <returns>Whether the operation was successful</returns>
        public static bool MoveBlock(uint id, float3 vector)
        {
            if (movementEngine.IsInGame && GamecraftModdingAPI.Utility.GameState.IsBuildMode())
            {
                movementEngine.MoveBlock(id, vector);
                return true;
            }
            return false;
        }

        /// <summary>
        /// Move all connected blocks by a specific (x,y,z) amount (offset).
        /// The moved blocks will remain connected to the block they're touching.
        /// All of the block's placement grids and collision boxes are also moved.
        /// This is equivalent to calling MoveBlock() for every connected block.
        /// </summary>
        /// <param name="id">The starting block's id</param>
        /// <param name="vector">The movement amount (x,y,z)</param>
        /// <returns>Whether the operation was successful</returns>
        public static bool MoveConnectedBlocks(uint id, float3 vector)
        {
            if (movementEngine.IsInGame && GamecraftModdingAPI.Utility.GameState.IsBuildMode())
            {
                movementEngine.MoveConnectedBlocks(id, vector);
                return true;
            }
            return false;
        }

        public static void Init()
        {
            GamecraftModdingAPI.Utility.GameEngineManager.AddGameEngine(movementEngine);
        }
    }
}