MegaBagar/FreeCam/Assets/BlockSpawner.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;

public class BlockSpawner : MonoBehaviour
{

    private void Start()
    {
        _playerInput = GetComponent<PlayerInput>();
    }

    [SerializeField]
    private GameObject _blockToPlace;
    public GameObject BlockToPlace
    {
        get
        {
            return _blockToPlace;
        }
        set
        {
            DisablePreviewMode();
            _blockToPlace = value;
        }
    }
    PlayerInput _playerInput;

    public float spawnDistance = 3f;

    public Shader previewShader;
    private GameObject _blockInstance;


    private bool _isPreview = false;
    private Shader _initialShader;

    public bool _blockRotating = false;
    private Quaternion _lastRotationState;

    public void OnPlaceBlock()
    {
        if (!_isPreview) return;
        _blockInstance.transform.SetParent(null);
        SwitchToDefaultRender();
        _blockInstance = null;
        DisablePreviewMode();
    }

    public void OnTogglePreviewMode(InputValue value)
    {
        float valueAsFloat = value.Get<float>();

        if (valueAsFloat == 1f)
        {
            EnablePreviewMode();
        }
        else
        {
            DisablePreviewMode();
        }
    }

    public void OnEnterRotateBlock(InputValue value)
    {
        float valueAsFloat = value.Get<float>();
        Debug.Log(valueAsFloat);
        _blockRotating = true;
    }

    public void OnExitRotateBlock(InputValue value)
    {
        float valueAsFloat = value.Get<float>();
        Debug.Log(valueAsFloat);
        _blockRotating = false;
    }

    public void OnRotateBlock(InputValue value)
    {
        if (_isPreview && _blockRotating)
        {
            Vector2 iMouseMovement = value.Get<Vector2>();

            Transform vTransform = _blockInstance.transform;
            //vTransform.Rotate(iMouseMovement.y / 10, iMouseMovement.x / 10, 0);
            vTransform.RotateAround(vTransform.position, transform.right, iMouseMovement.y / 10.0f);
            vTransform.RotateAround(vTransform.position, transform.up, iMouseMovement.x / 10.0f);
            //vTransform.eulerAngles += vTransform.worldToLocalMatrix.MultiplyVector(new Vector3(iMouseMovement.y / 10, iMouseMovement.x / 10, 0));
            //vTransform.Rotate(iMouseMovement.y/10, iMouseMovement.x/10, 0);
            _lastRotationState = vTransform.rotation;
        } 
    }

    private void EnablePreviewMode()
    {
        if (_blockToPlace == null) return;

        Vector3 spawnPos = Vector3.forward * spawnDistance;

        _blockInstance = Instantiate(_blockToPlace, spawnPos, Quaternion.identity);
        _blockInstance.transform.SetParent(this.transform, false);
        _blockInstance.transform.rotation = _lastRotationState;
        _isPreview = true;
        SwitchToMeshRender();
    }

    private void DisablePreviewMode()
    {
        if (_blockInstance != null) Destroy(_blockInstance);
        _isPreview = false;
    }

    private void SwitchToMeshRender()
    {
        MeshRenderer vRenderer = _blockInstance.GetComponent<MeshRenderer>();
        Material vMaterial = vRenderer.material;
        _initialShader = vMaterial.shader;
        vMaterial.shader = previewShader;
    }

    private void SwitchToDefaultRender()
    {
        MeshRenderer vRenderer = _blockInstance.GetComponent<MeshRenderer>();
        Material vMaterial = vRenderer.material;
        vMaterial.shader = _initialShader;
    }

}