added basic inventory system

Assets/Scripts/PlayerController.cs

@@ -0,0 +1,60 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class PlayerController : MonoBehaviour
+{
+
+  public Item testItem1;
+  public Item testItem2;
+  // Start is called before the first frame update
+  void Start()
+  {
+
+  }
+
+  // Update is called once per frame
+  void Update()
+  {
+    Inventory inventory = GetComponent<Inventory>();
+
+    if (Input.GetKeyDown(KeyCode.U))
+    {
+      // add 5 apples
+      int remainingCount = inventory.Add(testItem1, 5);
+      Debug.Log("Added " + (5 - remainingCount) + " apples to inventory.");
+    }
+
+    if (Input.GetKeyDown(KeyCode.I))
+    { // add 15 more apples
+      int remainingCount = inventory.Add(testItem1, 15);
+      Debug.Log("Added " + (15 - remainingCount) + " apples to inventory.");
+    }
+
+    if (Input.GetKeyDown(KeyCode.O))
+    {
+      // add 10 bananas
+      int remainingCount = inventory.Add(testItem2, 10);
+      Debug.Log("Added " + (10 - remainingCount) + " bananas to inventory.");
+    }
+
+
+    if (Input.GetKeyDown(KeyCode.J))
+    {
+      int count = 3;
+      int applesRemaining = inventory.Remove(testItem1, count);
+      Debug.Log("Removed " + (count - applesRemaining) + " apples.");
+
+    }
+
+    if (Input.GetKeyDown(KeyCode.K))
+    {
+      int count = 5;
+      int bananasRemaining = inventory.Remove(testItem2, count);
+      Debug.Log("Removed " + (count - bananasRemaining) + " bananas.");
+
+    }
+
+
+  }
+}