Rename some files

src/modules/game/sight_line.js

@@ -83,6 +83,7 @@ let sightLine, lockTarget,
 
 export function create({ x: x1, y: y1 }, { x: x2, y: y2 }) {
   const line = document.createElementNS(svgns, 'line');
+  sightLine = line;
 
   line.classList.add('sight-line');
   line.classList.add(activeClassName);
@@ -91,8 +92,6 @@ export function create({ x: x1, y: y1 }, { x: x2, y: y2 }) {
   line.setAttributeNS(null, 'x2', x2);
   line.setAttributeNS(null, 'y2', y2);
 
-  sightLine = line;
-
   return line;
 }