cosmetic syntax tweaks

src/components/Player.vue

@@ -152,10 +152,7 @@
       $render: function () {
         let frame = this.frame_sequence[this.position]
         if (frame === undefined) return
-        let x = frame[0]
-        let y = frame[1]
-        let w = frame[2]
-        let h = frame[3]
+        let [x, y, w, h] = frame
         if (w !== this.width || h !== this.height) this.clear('black')
         this.tmp_ctx.drawImage(this.image,
           x, y, w, h,