Add a Road planner

src/RoomPlanner/Blueprints/Roads.ts

@@ -0,0 +1,19 @@
+export const buildRoads = (room: Room) => {
+    if (room.controller?.level ?? 0 < 2) {
+        return;
+    }
+    const sources = room.find(FIND_SOURCES);
+    room.visual.clear();
+    for (const source of sources) {
+        for (const source2 of sources) {
+            const path = source.pos.findPathTo(source2, {
+                ignoreCreeps: true,
+                ignoreRoads: true
+            });
+            for (const point of path) {
+                room.visual.line(point.x, point.y, point.x - point.dx, point.y - point.dy);
+                room.createConstructionSite(point.x, point.y, STRUCTURE_ROAD);
+            }
+        }
+    }
+}