started working on Building rework

Assets/Buildings/Scripts/BuildingBlueprint.cs

@@ -0,0 +1,135 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public abstract class BuildingBlueprint : MonoBehaviour
+{
+    public bool isColliding;
+    public GameObject constructionPrefab;
+
+    public Material collisionMat;
+    public Material blueprintMat;
+
+    private GameObject terrain;
+    private Canvas hud;
+
+    Ray ray;
+
+    public abstract void Init();
+
+    public abstract void WhileColliding();
+    public abstract void WhileNotColliding();
+
+    private void Start()
+    {
+        hud = GameObject.Find("HUD").GetComponent<Canvas>(); //Get HUD Canvas
+        terrain = GameObject.FindGameObjectWithTag("Terrain"); //Get Terrain
+
+        //Bug Fix Blueprints already existing
+        //Delete/CleanUp all objs with tag "Blueprint"
+        GameObject[] blueprints = GameObject.FindGameObjectsWithTag("Blueprint");
+        foreach (GameObject blueprint in blueprints)
+            Destroy(blueprint);
+
+  
+        gameObject.tag = "Blueprint"; //Give Gameobject the tag "Blueprint" (after deleting all objs with this tag)
+
+        
+
+        Init(); //Call init callback function for children
+    }
+
+    public void Update()
+    {
+        FollowMouse();
+        Rotate();
+
+        //Collinding Callbacks
+        if (isColliding)
+        {            
+            WhileColliding();
+        }
+        else
+        {
+            WhileNotColliding();
+        }
+
+        //PLACE
+        if (Input.GetMouseButtonDown(0) && !isColliding)
+        {
+            Place();
+        }
+    }
+
+    void FollowMouse()
+    {
+        ray = Camera.main.ScreenPointToRay(Input.mousePosition);
+        RaycastHit hitData;
+        if (terrain.GetComponent<Collider>().Raycast(ray, out hitData, Mathf.Infinity))
+        {
+            transform.position = hitData.point;
+        }
+    }
+    void Rotate()
+    {
+        if (Input.GetButtonDown("Rotate"))
+        {
+            Debug.Log("Rotate+");
+            if (Input.GetKey(KeyCode.LeftShift))
+            {
+                transform.Rotate(0, 5, 0);
+            }
+            else if (Input.GetKey(KeyCode.LeftControl))
+            {
+                transform.Rotate(0, 45, 0);
+            }
+            else
+            {
+                transform.Rotate(0, 22.5f, 0);
+            }
+
+        }
+
+        if (Input.GetButtonDown("CounterRotate"))
+        {
+            Debug.Log("Rotate-");
+            if (Input.GetKey(KeyCode.LeftShift))
+            {
+                transform.Rotate(0, -5, 0);
+            }
+            else if (Input.GetKey(KeyCode.LeftControl))
+            {
+                transform.Rotate(0, -45, 0);
+            }
+            else
+            {
+                transform.Rotate(0, -22.5f, 0);
+            }
+
+        }
+    }
+    void Place()
+    {
+        Instantiate(constructionPrefab, transform.position, transform.rotation);
+        Destroy(this.gameObject);
+        hud.enabled = true;
+    }
+
+
+    //Collision
+    public void OnCollisionEnter(Collision c)
+    {
+        isColliding = true;
+        Debug.Log("Colliding True");
+    }
+    public void OnCollisionStay(Collision c)
+    {
+        isColliding = true;
+        Debug.Log("Colliding True");
+    }
+    public void OnCollisionExit(Collision c)
+    {
+        isColliding = false;
+        Debug.Log("Colliding False");
+    }
+}