game: add: class: point and segment, add: type docstring

frontend/static/js/api/game/Wall.js

@@ -1,19 +1,28 @@
-
+import { Segment } from "./Segment.js";
 
 class Wall
 {
-    constructor (rail_start_x, rail_start_y, rail_stop_x, rail_stop_y)
+    /**
+     * @param {Segment} start
+     */
+    constructor (rail)
     {
-        this.rail_start_x = rail_start_x;
-        this.rail_start_y = rail_start_y;
-        this.rail_stop_x = rail_stop_x;
-        this.rail_stop_y = rail_stop_y;
+        /**
+         * @type {Segment}
+         */
+        this.rail = rail === undefined ? new Segment() : rail;
     }
 
     draw(ctx)
     {
-        ctx.moveTo(this.rail_start_x, this.rail_start_y);
-        ctx.lineTo(this.rail_stop_x, this.rail_stop_y);
+        this.rail.draw(ctx);
+    }
+
+    from_json(data)
+    {
+        this.rail = this.rail.from_json(data.rail)
+
+        return this
     }
 }