====== Loggy's Site Generation reverse engineering notes ======

Site #loc types

^ flag ^ inspector name ^ check ^
| 1 | plains | None of the following set: sea, highland, swamp, waste, forest, cave, mountains |
| 2 | forest | forest, not sea |
| 4 | mountain | Either mountains or highland, not sea |
| 8 | waste | waste (can be sea) |
| 32 | sea | requires sea |
| 64 | coast | coast (no other terrain type specified) |
| 128 | swamp | swamp, not sea |
| 256 | deep sea | deep sea |
| 512 | cave | cave (can be sea) |
| 1024 | n/a | not EA |
| 2048 | n/a | not MA |
| 4096 | n/a | not LA |
| 16384 | unique | unique |
| 32768 | n/a | cannot generate in caves |
| 65536 | n/a | sea, not forest |
| 131072 | n/a | sea, not deep sea |

The above, split into two. Any one of the following must be true for the site to be placed:

^ flag ^ inspector name ^ actual check ^
| 1 | plains | none of the following set: sea, highland, swamp, waste, forest, cave, mountains |
| 32 | sea | sea |
| 131072 | n/a | sea and not deep sea |
| 65536 | n/a | sea and not (kelp) forest |
| 2 | forest | forest and not sea |
| 4 | mountain | either mountains or highland, and not sea |
| 512 | cave | cave |
| 128 | swamp | swamp |
| 256 | deep sea | deep sea |
| 64 | coast | coast (no other terrain type specified) |
| 8 | waste | waste |


If any of the following are true, the site is NOT ALLOWED to be placed:

^ flag ^ inspector name ^ checks for ^
| 1024 | n/a | EA |
| 2048 | n/a | MA |
| 4096 | n/a | LA |
| 16384 | unique | unique, and the site has already been placed |
| 32768 | n/a | caves |



Terrain local modifiers (in the order they are checked in)

^ terrain                      ^ mod                               ^
| manysites                    | +25                               |
| throne                       | +20 (stacks with other terrains)  |
| farm                         | -20 (to a minimum of 5)           |
| waste                        | +20                               |
| cave                         | +15                               |
| kelp forest                  | +10                               |
| forest                       | +10                               |
| mountains                    | +10                               |
| highland and UW (IE: gorge)  | +15                               |
| highland                     | +5                                |
| deep sea                     | +10                               |

First, generate sites according the the site flags on the terrain %%(these are 2^(13 + path id))%%. If multiple are set, lower ID paths will take precedence. For generation with this method, there is a 5% chance that the site is rarity 2, a (19/80) probability of it being rarity 1, otherwise it is rarity 0. If none of these terrain flags are set, skip this step, otherwise make 100 attempts to generate a site, stopping after one is successful.

Then move onto normal generation, which is 8 rolls of the following:

  * Generate a random number between 0 and 99. If this is less than local site frequency, generate a site:
    - 75% chance to be rarity 0.
    - 1/40 to be rarity 2.
    - Otherwise (9/40) to be rarity 1.
  - Regardless of whether or not a site generated, multiply local site frequency by (75/100) and round down, then go back to the start of this list

I now see why I didn't get the exact mechanics on the data analysis method. The rarity distribution was spot on, though.