adding in some needed packages

Assets/DamageNumbersPro/Demo/Scripts/DNP_2DDemo.cs

@@ -0,0 +1,89 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+#if ENABLE_INPUT_SYSTEM && DNP_NewInputSystem
+using UnityEngine.InputSystem;
+#endif
+
+namespace DamageNumbersPro.Demo
+{
+    public class DNP_2DDemo : MonoBehaviour
+    {
+        float nextShotTime;
+
+        void Start()
+        {
+            nextShotTime = 0;
+
+            Cursor.visible = true;
+            Cursor.lockState = CursorLockMode.None;
+        }
+
+        void Update()
+        {
+            HandleShooting();
+        }
+
+        void HandleShooting()
+        {
+            if (DNP_InputHandler.GetLeftClick())
+            {
+                Shoot();
+                nextShotTime = Time.time + 0.3f;
+            }
+            else if (DNP_InputHandler.GetRightHeld() && Time.time > nextShotTime)
+            {
+                Shoot();
+                nextShotTime = Time.time + 0.06f;
+            }
+        }
+
+        void Shoot()
+        {
+            Vector2 mousePosition = Vector2.zero;
+
+#if ENABLE_INPUT_SYSTEM && DNP_NewInputSystem
+            if (Mouse.current != null) {
+                mousePosition = Mouse.current.position.ReadValue();
+            }
+#else
+            mousePosition = Input.mousePosition;
+#endif
+
+            //Raycast.
+            Vector3 worldPosition = Camera.main.ScreenToWorldPoint(mousePosition);
+            worldPosition.z = -5;
+            RaycastHit hit;
+            Physics.Raycast(worldPosition, Vector3.forward, out hit, 10f);
+
+            //Select Damage Number:
+            DNP_PrefabSettings settings = DNP_DemoManager.instance.GetSettings();
+            DamageNumber prefab = DNP_DemoManager.instance.GetCurrent();
+
+            //Number:
+            float number = 1 + Mathf.Pow(Random.value, 2.2f) * settings.numberRange;
+            if (prefab.digitSettings.decimals == 0)
+            {
+                number = Mathf.Floor(number);
+            }
+
+            //Create Damage Number:
+            DamageNumber newDamageNumber = prefab.Spawn(worldPosition, number);
+
+            if (hit.collider != null)
+            {
+                DNP_Target dnpTarget = hit.collider.GetComponent<DNP_Target>();
+                if(dnpTarget != null)
+                {
+                    dnpTarget.Hit();
+                }
+
+                newDamageNumber.SetFollowedTarget(hit.collider.transform);
+            }
+
+            //Apply Demo Settings:
+            settings.Apply(newDamageNumber);
+        }
+    }
+}