Graveyard terrain and background tiles implemented

tilorswift/js/Tileset.js

@@ -3,41 +3,74 @@ import Setting from "../../js/Setting.js";
 
 export default class Tileset
 {
+    /**
+     * @param {number} setId 
+     */
     constructor(setId)
     {
+        /** @type {number} */
         this.setId = setId;
+
+        /** @type {Image} */
         this.image = new Image();
         this.image.src = '../' + Setting.TILESET_LOCATION + GraphicSet[this.setId].tileset;
+
+        /** @type {number} */
         this.tiles = GraphicSet[this.setId].tiles;
+
+        /** @type {number} */
         this.scale = GraphicSet[this.setId].scale;
+
+        /** @type {number} */
         this.primaryTiles = GraphicSet[this.setId].primaryTiles;
+
+        /** @type {{image: Image, tiles: number, scale: number}|null} */
+        this.background = null;
+
+        if (GraphicSet[this.setId].tilesetBackground !== null) {
+            const backgroundImage = new Image();
+            backgroundImage.src = '../' + Setting.TILESET_LOCATION + 
+                GraphicSet[this.setId].tilesetBackground.path;
+
+            this.background = {
+                image: backgroundImage,
+                tiles: GraphicSet[this.setId].tilesetBackground.tiles,
+                scale: GraphicSet[this.setId].tilesetBackground.scale,
+            };
+        }
     }
 
+    /** @returns {number} */
     getWidth()
     {
         return this.image.width * this.scale;
     }
 
+    /** @returns {number} */
     getHeight()
     {
         return this.image.height * this.scale;
     }
 
+    /** @returns {number} */
     getTileWidth()
     {
         return this.image.width / this.tiles * this.scale;
     }
 
+    /** @returns {number} */
     getTileHeight()
     {
         return this.image.height * this.scale;
     }
 
+    /** @returns {boolean} */
     hasExtendedTiles()
     {
         return GraphicSet[this.setId].tiles > GraphicSet[this.setId].primaryTiles ;
     }
 
+    /** @returns {number} */
     getTileIndexFactor(code)
     {
         const CODES = ['ltr', 't', 'r', 'b', 'l', 'lt', 'tr', 'ltb', 'tb', 'trb', 'lb', 'rb', 'ltrb', 'lr', 'lrb'];