Clean Inventory Grids

Improved inventory grid layout system by creating a single spritesheet with all 256 possible combinations of cell adjacency, and modified the inventory script to index individual sprites using adjacency

Assets/Scripts/Editor/SpriteProcessor.cs

@@ -0,0 +1,41 @@
+using UnityEngine;
+using UnityEditor;
+using System.Collections.Generic;
+using UnityEditorInternal;
+using System.IO;
+ 
+// https://forum.unity.com/threads/sprite-editor-automatic-slicing-by-script.320776/
+// http://www.sarpersoher.com/a-custom-asset-importer-for-unity/
+// public class SpritePostprocessor : AssetPostprocessor {
+//     public void OnPostprocessTexture(Texture2D texture) {
+//         TextureImporter importer = assetImporter as TextureImporter;
+//         if (importer.spriteImportMode != SpriteImportMode.Multiple) {
+//             return;
+//         }
+//  
+//         Debug.Log("OnPostprocessTexture generating sprites");
+//  
+//         int minimumSpriteSize = 8;
+//         int extrudeSize = 0;
+//
+//         Rect[] rects = InternalSpriteUtility.GenerateGridSpriteRectangles(texture, Vector2.one, Vector2.one * 8, Vector2.one * 2, true);
+//         //InternalSpriteUtility.GenerateAutomaticSpriteRectangles(texture, minimumSpriteSize, extrudeSize);
+//         // List<Rect> rectsList = new List<Rect>(rects);
+//         // rectsList = SortRects(rectsList, texture.width);
+//  
+//         string filenameNoExtension = Path.GetFileNameWithoutExtension(assetPath);
+//         List<SpriteMetaData> metas = new List<SpriteMetaData>();
+//         int rectNum = 0;
+//  
+//         foreach (Rect rect in rects) {
+//             SpriteMetaData meta = new SpriteMetaData();
+//             meta.border = Vector4.one * 4;
+//             meta.rect = rect;
+//             meta.name = filenameNoExtension + "_" + rectNum++;
+//             metas.Add(meta);
+//         }
+//  
+//         importer.spritesheet = metas.ToArray();
+//     }
+// }
+