added: initial combat mechanics

Assets/Scripts/Player/Combat/UnitCombat.cs

@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using Reset.Units;
+using UnityEngine;
+
+public class UnitCombat : MonoBehaviour{
+    public List<Collider> draggedUnits = new List<Collider>();
+
+    private UnitMovementHandler movement;
+
+    private Vector3 lastPosition;
+    private Vector3 positionDelta;
+
+    private float lastSpeed;
+    private float speedDelta;
+    
+    void Awake(){
+        movement = GetComponent<UnitMovementHandler>();
+    }
+
+    void Start(){
+        lastPosition = transform.position;
+    }
+
+    // Update is called once per frame
+    void Update(){
+        positionDelta = lastPosition.DirectionTo(transform.position);
+        speedDelta = Vector3.Distance(lastPosition, transform.position);
+            
+        lastPosition = transform.position;
+
+        foreach (Collider draggedUnit in draggedUnits) {
+            UnitMovementHandler draggedUnitMovement = draggedUnit.GetComponent<UnitMovementHandler>();
+            if (!draggedUnitMovement) {
+                Debug.LogError($"No available UnitMovement on {draggedUnit.name}. Aborting drag on this unit.");
+                continue;
+            }
+            
+            draggedUnitMovement.SetNewDirection((transform.rotation* positionDelta).ToVector2(), 1f, true);
+            draggedUnitMovement.SetNewSpeed(speedDelta, 1f, true);
+            draggedUnitMovement.SetNewRotation(Quaternion.LookRotation(transform.position.DirectionTo(draggedUnit.transform.position)), 1f, true);
+        }
+    }
+}