Northbound/Assets/Scripts/Editor/TowerPrefabSetup.cs

using Northbound.Data;
using UnityEditor;
using UnityEngine;
using UnityEngine.AI;

namespace Northbound.Editor
{
    public class TowerPrefabSetup : IPrefabSetup
    {
        public string GetTemplateName()
        {
            return "TowerTemplate";
        }

        public void SetupPrefab(GameObject prefab, ScriptableObject data)
        {
            if (!(data is TowerData towerData))
            {
                Debug.LogWarning($"[TowerPrefabSetup] Expected TowerData, got {data.GetType().Name}");
                return;
            }

            // Set prefab reference
            towerData.prefab = prefab;

            Transform modelTransform = null;

            if (!string.IsNullOrEmpty(towerData.modelPath))
            {
                RemoveOldModel(prefab);

                if (towerData.modelPath.ToLower().EndsWith(".fbx"))
                {
                    GameObject fbxModel = AssetDatabase.LoadAssetAtPath<GameObject>(towerData.modelPath);
                    if (fbxModel != null)
                    {
                        GameObject fbxInstance = GameObject.Instantiate(fbxModel);
                        fbxInstance.name = "Model";
                        fbxInstance.transform.SetParent(prefab.transform, false);
                        fbxInstance.transform.localPosition = Vector3.zero;
                        fbxInstance.transform.localRotation = Quaternion.identity;

                        modelTransform = fbxInstance.transform;

                        Debug.Log($"[TowerPrefabSetup] Applied FBX model: {towerData.modelPath} with scale {towerData.sizeX}x{towerData.sizeZ}x{towerData.sizeY}");
                    }
                    else
                    {
                        Debug.LogWarning($"[TowerPrefabSetup] Could not load FBX model: {towerData.modelPath}");
                    }
                }
                else
                {
                    var meshFilter = prefab.GetComponent<MeshFilter>();
                    if (meshFilter == null)
                    {
                        meshFilter = prefab.AddComponent<MeshFilter>();
                    }

                    var renderer = prefab.GetComponent<MeshRenderer>();
                    if (renderer == null)
                    {
                        renderer = prefab.AddComponent<MeshRenderer>();
                    }

                    Mesh mesh = AssetDatabase.LoadAssetAtPath<Mesh>(towerData.modelPath);
                    if (mesh != null)
                    {
                        meshFilter.sharedMesh = mesh;

                        modelTransform = renderer.transform;

                        Debug.Log($"[TowerPrefabSetup] Applied mesh: {towerData.modelPath}");
                    }
                    else
                    {
                        Debug.LogWarning($"[TowerPrefabSetup] Could not load mesh: {towerData.modelPath}");
                    }
                }
            }

            var collider = prefab.GetComponent<BoxCollider>();
            if (collider == null)
            {
                collider = prefab.AddComponent<BoxCollider>();
            }
            collider.size = new Vector3(towerData.sizeX, towerData.sizeY, towerData.sizeZ);
            collider.center = new Vector3(0f, towerData.sizeY / 2f, 0f);

            var navObstacle = prefab.GetComponent<NavMeshObstacle>();
            if (navObstacle == null)
            {
                navObstacle = prefab.AddComponent<NavMeshObstacle>();
                navObstacle.shape = NavMeshObstacleShape.Box;
            }
            navObstacle.size = new Vector3(towerData.sizeX, towerData.sizeY, towerData.sizeZ);
            navObstacle.center = new Vector3(0f, towerData.sizeY / 2f, 0f);
        }

        private void RemoveOldModel(GameObject prefab)
        {
            Transform oldModel = prefab.transform.Find("Model");
            if (oldModel != null)
            {
                GameObject.DestroyImmediate(oldModel.gameObject);
            }
        }
    }
}