Building Selection started + Outline

Assets/Game/Scripts/WorldItemSelector.cs

@@ -0,0 +1,65 @@
+using UnityEngine.UI;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.EventSystems;
+using UnityEngine.Events;
+
+public class WorldItemSelector : MonoBehaviour
+{
+    public float moveThreshold = 1;
+    public LayerMask layerMask;
+
+    public Transform selectedItemUI;
+    public void SelectScreenPoint(Vector2 screenPoint){
+        Ray ray = Camera.main.ScreenPointToRay(screenPoint);
+        RaycastHit hit = new RaycastHit();
+
+        if(Physics.Raycast(ray,out hit, Mathf.Infinity, layerMask)){
+            Building selectedB = hit.collider.GetComponent<Building>();
+            if(selectedB!=null){
+                Debug.Log("Selected building : " + selectedB.buildingName);
+                Selector.selectBuilding(selectedB);
+            }else{
+                Debug.Log("No target here, Unselecting");
+                Selector.selectBuilding(null);
+            }
+            RefreshUI();
+        }
+    }
+
+
+    public void RefreshUI(){
+        selectedItemUI.gameObject.SetActive(Selector.selectedBuilding !=null);
+        if(Selector.selectedBuilding!=null){
+            selectedItemUI.GetChild(0).GetComponent<Text>().text = Selector.selectedBuilding.buildingName;
+        }
+    }
+
+
+    private Vector2 startedPos= Vector2.zero;
+    public void OnPointerDown(BaseEventData e){
+        PointerEventData ped = (PointerEventData) e as PointerEventData;
+        startedPos = ped.position;
+    }
+
+    public void OnPointerUp(BaseEventData e){
+        PointerEventData ped = (PointerEventData) e as PointerEventData;
+        float pointerDiff = Mathf.Abs(ped.position.magnitude - startedPos.magnitude);
+        if(pointerDiff < moveThreshold){
+            SelectScreenPoint(ped.position);
+        }else{
+            Debug.Log("Pointer moved (" + pointerDiff+ "), Not gonna select item");
+        }
+    }
+}
+
+public static class Selector{
+    public static Building selectedBuilding;
+    public static UnityEvent OnSelectedChanged = new UnityEvent();
+
+    public static void selectBuilding(Building e){
+        selectedBuilding = e;
+        OnSelectedChanged.Invoke();
+    }
+}