Initial Unity prototype

Assets/Scripts/CartPickup.cs

@@ -0,0 +1,58 @@
+using UnityEngine;
+
+public class CartPickup : MonoBehaviour
+{
+    public float pickupRange = 3f;
+    public Transform holdPoint; // An empty GameObject in front of player
+    private GameObject heldObject;
+    private bool isHolding = false;
+
+    void Update()
+    {
+        if (Input.GetKeyDown(KeyCode.E))
+        {
+            if (isHolding)
+            {
+                DropObject();
+            }
+            else
+            {
+                Ray ray = new Ray(Camera.main.transform.position, Camera.main.transform.forward);
+                if (Physics.Raycast(ray, out RaycastHit hit, pickupRange))
+                {
+                    if (hit.collider.CompareTag("Cart"))
+                    {
+                        PickupObject(hit.collider.gameObject);
+                    }
+                }
+            }
+        }
+
+        // Optional: Keep the cart tightly in position
+        if (isHolding && heldObject != null)
+        {
+            heldObject.transform.position = holdPoint.position;
+            heldObject.transform.rotation = holdPoint.rotation;
+        }
+    }
+
+    void PickupObject(GameObject obj)
+    {
+        heldObject = obj;
+        isHolding = true;
+        obj.GetComponent<Rigidbody>().isKinematic = true;
+        obj.transform.SetParent(holdPoint);
+        obj.transform.localPosition = Vector3.zero;
+    }
+
+    void DropObject()
+    {
+        if (heldObject != null)
+        {
+            heldObject.transform.SetParent(null);
+            heldObject.GetComponent<Rigidbody>().isKinematic = false;
+            heldObject = null;
+        }
+        isHolding = false;
+    }
+}