Add bobbing to pickups

Author: sunsided

Assets/Project/Prefabs/AmmoPickup.prefab

@@ -1,4 +1,6 @@
-using UnityEngine;
+using System;
+using UnityEngine;
+using Debug = UnityEngine.Debug;
 
 namespace Project.Scripts
 {
@@ -7,6 +9,39 @@ public class Pickup : MonoBehaviour
         public PickupType type;
         public int value = 1;
 
+        [Header("Bobbing")]
+        public float rotateSpeed;
+        public float bobSpeed;
+        public float bobHeight;
+
+        private Vector3 _startPosition;
+        private bool _bobbingUp;
+
+        private void Start()
+        {
+            _startPosition = transform.position;
+        }
+
+        private void Update()
+        {
+            var tf = transform;
+            var pos = tf.position;
+
+            // Rotation.
+            tf.Rotate(Vector3.up, rotateSpeed * Time.deltaTime);
+
+            // Up/down bobbing.
+            var offset = _bobbingUp
+                ? new Vector3(0, bobHeight * 0.5f, 0)
+                : new Vector3(0, -bobHeight * 0.5f, 0);
+            var target = _startPosition + offset;
+            tf.position = pos = Vector3.MoveTowards(pos, target, bobSpeed * Time.deltaTime);
+            if (pos == target)
+            {
+                _bobbingUp = !_bobbingUp;
+            }
+        }
+
         private void OnTriggerEnter(Collider other)
         {
             if (other.CompareTag("Player"))
@@ -25,7 +60,15 @@ private void OnTriggerEnter(Collider other)
                         player.GiveAmmo(value);
                         break;
                     }
+
+                    default:
+                    {
+                        Debug.Log($"Unhandled pickup type: {type}");
+                        break;
+                    }
                 }
+
+                Destroy(gameObject);
             }
         }
     }