Adjust zoom settings and sync slider with mouse wheel.

- Changed default zoom from 2.5 to 6.0 (further away).
- Reduced max zoom distance from 30 to 15.
- Fixed slider not updating when using mouse wheel zoom.

src/engine/dungeon/TileDefinitions.js

@@ -9,7 +9,10 @@ export const TILES = {
         id: 'corridor_straight',
         name: 'Corridor',
         type: TILE_TYPES.CORRIDOR,
-        textures: ['/assets/images/dungeon1/tiles/corridor1.png'],
+        textures: ['/assets/images/dungeon1/tiles/corridor1.png',
+            '/assets/images/dungeon1/tiles/corridor2.png',
+            '/assets/images/dungeon1/tiles/corridor3.png',
+        ],
         variants: {
             [DIRECTIONS.NORTH]: {
                 width: 2, height: 6,