Onto lesson 2

Assets/Scripts/UnitCommander.cs

@@ -1,7 +1,22 @@
+using System.Diagnostics.Contracts;
+using System.Xml.Serialization;
 using UnityEngine;
 
 public class UnitCommander : MonoBehaviour
 {
+    public GameObject selectionMarkerPrefab;
+    public LayerMask layerMask;
+    
+    //components
+    private UnitSelection unitSelection;
+    private Camera cam;
+
+    void Awake()
+    {
+        //get the components
+        unitSelection = GetComponent<UnitSelection>();
+        cam = Camera.main;
+    }
     // Start is called once before the first execution of Update after the MonoBehaviour is created
     void Start()
     {
@@ -11,6 +26,54 @@ public class UnitCommander : MonoBehaviour
     // Update is called once per frame
     void Update()
     {
-        
+        if(Input.GetMouseButtonDown(1) && unitSelection.HasUnitSelected())
+        {
+            Ray ray = cam.ScreenPointToRay(Input.mousePosition);
+            RaycastHit hit;
+            Unit[] selectedUnits = unitSelection.GetSelectedUnits();
+            if(Physics.Raycast(ray, out hit, 100, layerMask))
+            {
+                if(hit.collider.CompareTag("Ground"))
+                {
+                    SelectionMarker marker = CreateSelectionMarker(hit.point, false);
+                    UnitsMoveToPosition(hit.point, selectedUnits, marker);
+                }
+                else if(hit.collider.CompareTag("Resource"))
+                {
+                    UnitsGatherResource(hit.collider.GetComponent<ResourceSource>(), selectedUnits);
+                    CreateSelectionMarker(hit.point, true);
+                }
+            }
+        }
+    }
+    void UnitsMoveToPosition(Vector3 movePos, Unit[] units, SelectionMarker marker)
+    {
+        for(int x = 0; x < units.Length; x++)
+        {
+            // Only the first unit owns the marker so it isn't destroyed multiple times
+            units[x].MoveToPosition(movePos, x == 0 ? marker : null);
+        }
+    }
+    //creates a new selection marker at the position we right click
+    SelectionMarker CreateSelectionMarker(Vector3 pos, bool large)
+    {
+        GameObject marker = Instantiate(selectionMarkerPrefab, pos + new Vector3(0, 0.01f, 0), Quaternion.identity);
+        if(large)
+            marker.transform.localScale = Vector3.one * 3;
+        return marker.GetComponent<SelectionMarker>();
+    }
+    //called when we command units to move somewhere
+    void MoveUnitsToPosition(Vector3 movePos, Unit[] units)
+    {
+        Vector3[] destinations = UnitMover.GetUnitGroupDestination(movePos, units.Length, 2);
+        for(int x = 0; x < units.Length; x++)
+        {
+            units[x].MoveToPosition(destinations[x]);
+        }
+    }
+    //called when we command units to gather a resource
+    void UnitsGatherResource(ResourceSource resource, Unit[] units)
+    {
+
     }
 }