Level class created and gravity editable.

js/Level.js

@@ -0,0 +1,87 @@
+import FileLoader from "./FileLoader.js";
+import Terrain from "../tilorswift/js/Terrain.js";
+
+export default class Level
+{
+    constructor(terrain)
+    {
+        this.terrain = terrain;
+        this.gravity = 2.0;
+    }
+
+    getTilesetId()
+    {
+        return this.terrain.tileset.setId;
+    }
+
+    getBackgroundColor()
+    {
+        return this.terrain.backgroundColor;
+    }
+
+    getBackgroundImage()
+    {
+        return this.terrain.backgroundImage;
+    }
+
+    getRows()
+    {
+        return this.terrain.tilesY;
+    }
+
+    getColumns()
+    {
+        return this.terrain.tilesX;
+    }
+
+    getStartX()
+    {
+        return this.terrain.entranceTileX;
+    }
+
+    getStartY()
+    {
+        return this.terrain.entranceTileY;
+    }
+
+    getTargetX()
+    {
+        return this.terrain.targetTileX;
+    }
+
+    getTargetY()
+    {
+        return this.terrain.targetTileY;
+    }
+
+    getTilesetMatrix()
+    {
+        return this.terrain.fields;
+    }
+
+    hasEntrancePoint()
+    {
+        return this.terrain.hasEntrancePoint();
+    }
+
+    hasTargetPoint()
+    {
+        return this.terrain.hasTargetPoint();
+    }
+
+    setGravity(gravity)
+    {
+        this.gravity = gravity;
+    }
+
+    static createFromFile(filename)
+    {
+        let loader = new FileLoader(filename);
+        let levelData = JSON.parse(loader.getContent());
+        let terrain = Terrain.createFromJson(levelData);
+        let level =  new Level(terrain);
+        level.setGravity(levelData.gravity);
+
+        return level;
+    }
+}