BITFALL/Assets/Artists/Scripts/Equip/PlacementController.cs

using System;
using System.Collections;
using System.Collections.Generic;
using BITFALL.Placement;
using BITFALL.Player.Movement;
using BITKit;
using BITKit.Entities;
using BITKit.StateMachine;
using UnityEngine;
using UnityEngine.InputSystem;
using UnityEngine.InputSystem.Interactions;

namespace BITFALL.Player.Equip
{
	public interface IPlacementState:IState{}

	public sealed class PlacementController : BITEquipBase<IPlacementState>
	{
		[SerializeField] private Material material;
		[SerializeField] private LayerMask layerMask;
		
		[Header(Constant.Header.Input)]
		[SerializeField] private InputActionReference craftAction;
		[SerializeField] private InputActionReference snapAction;

		[Inject] private IEntityMovement _movement;
		[Inject] private IPlayerEquipSelector _equipSelector;

		private readonly Optional<Location> allowCraft = new();
		private ScriptablePlacement ScriptablePlacement=>Item.GetAssetable() as ScriptablePlacement;

		private bool _snap;
		public override bool IsSupportItem(IBasicItem item)
		{
			if (item is null) return false;
			var assetable = item.GetAssetable();
			return assetable is IPlacementObject;
		}
		public override void Entry()
		{
			base.Entry();
			inputActionGroup.RegisterCallback(craftAction, OnCraft);
			inputActionGroup.RegisterCallback(snapAction, OnSnap);
		}

		private void OnSnap(InputAction.CallbackContext obj)
		{
			if(obj.interaction is not PressInteraction) return;
			_snap = obj.performed;
		}

		public override void Exit()
		{
			base.Exit();
			inputActionGroup.UnRegisterCallback(craftAction, OnCraft);
			inputActionGroup.UnRegisterCallback(snapAction, OnSnap);
		}
	
		private void OnCraft(InputAction.CallbackContext obj)
		{
			if (BITAppForUnity.AllowCursor.Allow) return;
			if (obj is not { interaction: PressInteraction, performed: true }) return;
			if (!allowCraft.Allow) return;

			if (_inventory.Remove(Item))
			{
				var instance = ScriptablePlacement.Clone() as UnityPlacementObject;
				instance!.transform.SetPositionAndRotation(allowCraft.Value, allowCraft.Value);
				if (instance.TryGetComponent<IWorldItemObject>(out var worldItemObject))
				{
					worldItemObject.Item = Item;
				}
			}
			_equipSelector.Cancel();
		}

		public override void OnUpdate(float deltaTime)
		{
			var startPosition = Camera.main.transform.position;
			var direction = Camera.main.transform.forward;
			var distance = 3.2f;

			var position = _movement.Position;
			var rotation = _movement.Rotation;

			// ReSharper disable once AssignmentInConditionalExpression
			if (allowCraft.Allow = Physics.Raycast(startPosition, direction, out var hit, distance, layerMask))
			{

				position = hit.point;
					Debug.DrawLine(hit.point, hit.point + hit.normal, Color.magenta);
					rotation = _movement.Rotation * Quaternion.Euler(0, 180, 0);

					if (_snap)
					{
						position = hit.point + hit.normal * 0.32f;
						position = MathV.AlignToGrid(position, ScriptablePlacement.PositionIncrement);
						rotation = MathQ.AlignRotation(rotation, ScriptablePlacement.RotationIncrement);
					}

					foreach (var x in ScriptablePlacement.Object.As<MonoBehaviour>().GetComponentsInChildren<MeshFilter>())
				{
					Graphics.DrawMesh(x.sharedMesh,position+rotation*x.transform.localPosition,rotation * x.transform.localRotation,material,LayerMask.NameToLayer("Default"));
				}

				allowCraft.Value = new Location(position, rotation);
				
				
			}
			else
			{
				Debug.DrawLine(startPosition, startPosition + direction * distance, Color.red);
			}
		}
	}
}