Skip to content
OpenTS Manual

Seed

The number the map generator's random sequence is started from.

Specification
Applies to
random map generation
File
map seed file
Section
[RandomMap]
Value
integer
When omitted
-1A seed file without `Seed` builds the map `Seed=0` gives.

Every random choice the map generator makes comes from one sequence started from Seed. The same settings and game data with the same seed build the same map, cell for cell, and a different seed builds a different layout. Map seed files covers the section the key is written in.

map seed file
[RandomMap]
Seed=12345
Width=1
Height=1
NumPlayers=4

Before a map is built, Seed is held to 0 through 65535: a negative value becomes 0, and a value above 65535 becomes 65535. This happens whether the file is loaded into the map generator dialog or played as a scenario.

The map generator dialog has no seed control. It uses the seed it already holds, which starts at 0, changes to a new number from 0 through 65535 each time Surprise Me is pressed, and comes from the file when saved settings are loaded. Saving the settings writes that seed to the file.

Surprise Me also picks new values for the other settings, so the dialog cannot change the seed alone. To try a new seed with the same settings, save them, change Seed in the saved file and load it again.

A scenario file with RandomMap=yes ignores Seed and builds its map from the match’s seed.

See also — NumPlayers, Width, Height