+-- Level +7 ---------------------------------------------------------------------------------------------------+
| ^ |
| % |
| v |
| |
+---------------------------------------------------------------------------------------------------------------+
+-- Level +6 ---------------------------------------------------------------------------------------------------+
| ^ |
| % |
| v |
| |
+---------------------------------------------------------------------------------------------------------------+
+-- Level +5 ---------------------------------------------------------------------------------------------------+
| ^ |
| % |
| v |
| |
+---------------------------------------------------------------------------------------------------------------+
+-- Level +4 ---------------------------------------------------------------------------------------------------+
| ^ |
| % |
| v |
| |
+---------------------------------------------------------------------------------------------------------------+
+-- Level +3 ---------------------------------------------------------------------------------------------------+
| ^ |
| % |
| v |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| ^ |
| % |
| v |
| |
+---------------------------------------------------------------------------------------------------------------+
+-- Level +2 ---------------------------------------------------------------------------------------------------+
| ^ |
| % |
| v |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| ^ |
| % |
| v |
| |
+---------------------------------------------------------------------------------------------------------------+
+-- Level +1 ---------------------------------------------------------------------------------------------------+
| ^ |
| % |
| v |
| |
| |
| |
| |
| * |
| / \ |
| / \ |
| %--*--*--* * |
| v \ |
| \ |
| * |
| \ |
| \ |
| * |
| \ |
| \ ^ |
| *--% |
| |
+---------------------------------------------------------------------------------------------------------------+
+-- Ground level -----------------------------------------------------------------------------------------------+
| |
| * |
| / \ |
| ^ / \ |
| %--*--*--*--* * * |
| \ / \ |
| \ / \ |
| *--*--* % |
| v |
| |
| %--* |
| v \ |
| \^ |
| % |
| \ |
| \ |
| * |
| |
+---------------------------------------------------------------------------------------------------------------+
+-- Level -1 ---------------------------------------------------------------------------------------------------+
| |
| * |
| / \ |
| / \ |
| * * |
| / \ |
| ^ / \ |
| %--* * |
| \ |
| \ ^ |
| * % |
| \ / |
| \ / |
| *--*--*--*--*--* |
| |
+---------------------------------------------------------------------------------------------------------------+