+-- Level +1 ---------------------------------------------------------------------+
| |
| *--* |
| / |
| / |
| *--*--* |
| / |
| / |
| * |
| / |
| / |
| %--* |
| v |
| |
+---------------------------------------------------------------------------------+
+-- Ground level -----------------------------------------------------------------+
| ^ |
| % *--*--* |
| \ / / \ |
| \ / / \ |
| *--* * * |
| \ | |
| \^ | |
| % * |
| \ |
| \ |
| * |
| /| |
| / | |
| * * *--* |
| | \ | \ |
| | \ | \ |
| * * * * |
| | \ | |
| | \ | |
| * * * |
| \ / | |
| \ / | |
| * * |
| | |
| | |
| * |
| \ |
| \ |
| * |
| \ |
| \ |
| * % |
| | /v |
| ^ |/ |
| %--* |
| |
+---------------------------------------------------------------------------------+
+-- Level -1 ---------------------------------------------------------------------+
| ^ |
| % |
| | |
| | |
| % |
| v |
| |
+---------------------------------------------------------------------------------+
+-- Level -2 ---------------------------------------------------------------------+
| ^ |
| %--* |
| | |
| | |
| * |
| / |
| / |
| % |
| v |
| |
+---------------------------------------------------------------------------------+
+-- Level -3 ---------------------------------------------------------------------+
| ^ |
| % |
| \ |
| \ |
| * |
| \ |
| \ |
| *--* |
| \ |
| \ |
| % |
| v |
| |
+---------------------------------------------------------------------------------+
+-- Level -4 ---------------------------------------------------------------------+
| |
| % |
| v\ |
| \ |
| * |
| | |
| | |
| * |
| / |
| / |
| * |
| | |
| | |
| * |
| \ |
| \ |
| * |
| | |
| |^ |
| % |
| |
+---------------------------------------------------------------------------------+
+-- Level -5 ---------------------------------------------------------------------+
| |
| *--*--*--*--* * |
| / \ / \ |
| / \ / \ |
| * *--*--* * |
| \ | |
| \ ^ | |
| *--% *--*>-* |
| v |
| |
+---------------------------------------------------------------------------------+