/*
00 01 02 03 04 05 06 07 08 09 ->>> x
00 xx xx xx xx xx xx xx xx xx xx
01 xx xx
02 xx xx
03 xx xx
04 xx 18 1A xx xx
05 xx 18 1B xx
06 xx 19 1C xx
07 xx xx
08 xx xx
09 xx xx
10 xx xx xx xx xx xx xx xx xx xx
^
^
|
y
switch (FEAT_INDUSTRIES, SELF, oil_rig_location_callback, industry_distance(INDUSTRYTYPE_OIL_RIG, -1) ) {
0..6: CB_RESULT_LOCATION_DISALLOW;
CB_RESULT_LOCATION_ALLOW;
}
*/