From 99867606f695ef711b40845a11b19731910ac63c Mon Sep 17 00:00:00 2001
From: marcinzelent <zelent.marcin@gmail.com>
Date: Fri, 26 Apr 2019 23:46:33 +0200
Subject: Added background and level scrolling

---
 nGJ2019/Assets/Scripts/LevelScrolling.cs | 66 ++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 nGJ2019/Assets/Scripts/LevelScrolling.cs

(limited to 'nGJ2019/Assets/Scripts/LevelScrolling.cs')

diff --git a/nGJ2019/Assets/Scripts/LevelScrolling.cs b/nGJ2019/Assets/Scripts/LevelScrolling.cs
new file mode 100644
index 0000000..dd413f8
--- /dev/null
+++ b/nGJ2019/Assets/Scripts/LevelScrolling.cs
@@ -0,0 +1,66 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class LevelScrolling : MonoBehaviour
+{
+  public int updateRate = 1;
+  public Transform longcat;
+  public Transform background;
+
+  private Vector3 initialBgPos;
+  private float[] backgroundSize;
+
+  // Start is called before the first frame update
+  void Start()
+  {
+    ResizeBackground();
+  }
+
+  // Update is called once per frame
+  void Update()
+  {
+
+  }
+
+  void FixedUpdate()
+  {
+    MoveBackground();
+    MoveLongcat();
+  }
+
+  private void ResizeBackground()
+  {
+    var sr = background.GetComponent<SpriteRenderer>();
+    if (sr == null) return;
+
+    background.localScale = new Vector3(1, 1, 1);
+
+    var width = sr.sprite.bounds.size.x;
+    var height = sr.sprite.bounds.size.y;
+
+    var worldScreenHeight = Camera.main.orthographicSize * 2.0;
+    var worldScreenWidth = worldScreenHeight / Screen.height * Screen.width;
+
+    var finalHeight = (float)(worldScreenHeight / height);
+    var finalWidth = (float)(worldScreenWidth / width);
+
+    background.localScale = new Vector3(finalHeight, finalHeight, 1);
+
+    var viewportX = Camera.main.ViewportToWorldPoint(new Vector3(0, 1, 0)).x;
+    background.position = new Vector3(viewportX * -1, 0, 0);
+    initialBgPos = background.position;
+  }
+
+  private void MoveLongcat()
+  {
+    longcat.Translate(new Vector2(0.1f * updateRate, 0));
+  }
+
+  private void MoveBackground()
+  {
+    if (background.position.x > -initialBgPos.x)
+      background.Translate(new Vector2(0.1f * updateRate, 0));
+    else background.position = initialBgPos;
+  }
+}
-- 
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