From e2e552af54a4e3f89965c50aeb45e7bb892d9e11 Mon Sep 17 00:00:00 2001
From: Bartek Wlodarski <wlodarsb@coventry.ac.uk>
Date: Sun, 3 May 2020 17:49:01 +0100
Subject: [PATCH] Created drag indicator

The drag indicator shows the user roughly how much force will be applied to the planet.
---
 Assets/Scripts/DragIndicatorController.cs     | 46 +++++++++++++++++++
 .../Scripts/DragIndicatorController.cs.meta   | 11 +++++
 2 files changed, 57 insertions(+)
 create mode 100644 Assets/Scripts/DragIndicatorController.cs
 create mode 100644 Assets/Scripts/DragIndicatorController.cs.meta

diff --git a/Assets/Scripts/DragIndicatorController.cs b/Assets/Scripts/DragIndicatorController.cs
new file mode 100644
index 0000000..d96614c
--- /dev/null
+++ b/Assets/Scripts/DragIndicatorController.cs
@@ -0,0 +1,46 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.EventSystems;
+
+public class DragIndicatorController : MonoBehaviour
+{
+    private new Camera camera;
+    private Vector2 startPos, endPos;
+
+    private LineRenderer lr;
+
+    // Start is called before the first frame update
+    void Start()
+    {
+        camera = Camera.main;
+        lr = gameObject.GetComponent<LineRenderer>();
+        startPos = endPos = Vector2.zero;
+        lr.positionCount = 2;
+        lr.material.color = Color.black;
+        lr.enabled = false;
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        if (!EventSystem.current.IsPointerOverGameObject())
+        {
+            if (Input.GetMouseButtonDown(0))
+            {
+                lr.enabled = true;
+                startPos = camera.ScreenToWorldPoint(Input.mousePosition);
+                lr.SetPosition(0, startPos);
+            }
+            if (Input.GetMouseButton(0))
+            {
+                endPos = camera.ScreenToWorldPoint(Input.mousePosition);
+                lr.SetPosition(1, endPos);
+            }
+            if (Input.GetMouseButtonUp(0))
+            {
+                lr.enabled = false;
+            }
+        }
+    }
+}
diff --git a/Assets/Scripts/DragIndicatorController.cs.meta b/Assets/Scripts/DragIndicatorController.cs.meta
new file mode 100644
index 0000000..890d774
--- /dev/null
+++ b/Assets/Scripts/DragIndicatorController.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 06cd893d9411f8348babf4599964139d
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: