SECTOR TYPES:

+===============+===============+	+===============+===============+
| Sector Type	| Movement Loss	|	| Sector Type	| Movement Loss	|
+---------------+---------------+	+---------------+---------------+
| INSIDE	|        1	|	| WATER_SWIM	|        4	|
| CITY		|        2	|	| WATER_NOSWIM	|        1	|
| FIELD		|        2	|	| UNUSED	|        6	|
| FOREST	|        3	|	| AIR		|       10	|
| HILLS		|        4	|	| DESERT	|        6	|
| MOUNTAIN	|        6	|	+===============+===============+
+===============+===============+

*WATER_NOSWIM Sectors require a boat, or a 'fly' spell.
*AIR Sectors require the player to be affected by 'fly'.