Starting Bias Tiers Definition?

[CPL_Yoshi]

Hey, I know that the starting bias are well defined here, but has anyone actually tested this out? What do the "Tiers" actually represent?

Is it that the higher the tier number, the more likely you'll have one of those spawn conditions?

Or is it based on proximity and density of that terrain?

For example:
Norway
Norway has a Tier 3 coastal bias and Tier 5 forest bias

If we were to alter the coastal bias to 2, would that mean Norway would have a higher chance to spawn on the coast, or would that mean he were to not spawn on the coast, he would be closer. Tier 3 non-coastal start, maybe he spawned 10 tiles away from the nearest coast, but with Tier 2 non-coastal start, maybe he spawns 8 or less tiles nearer to the coast.

Same idea goes with the density. Would a tier 5 forest bias give less forest than a tier 3 forest bias? or does that just mean the civ will have a better chance of spawning near forests.

And if the biases just represent a higher percentage to spawn in those locations, is there a general percentage tagged to each tier? (ex. tier 1 gives you an 80&=% chance...)


And to further go into this topic, how are the tiles generated? Hills can pop up once and awhile in some places, but in others, you'll see 10+ hills. Has someone decoded the map generation? And can anyone give that to me in layman's terms?

 

[Victoria]

If there is conflict in placement the tiers take precedence is all I know for sure. This bias is not guaranteed ... England only has a coast bias and has not started near the coast despite there being room for a settler later at the coast and no breach of minimum starting distances.
It is I believe these minimum starting distances that will most limit placement.. but hey its only a guess

 

[CPL_Yoshi]

So with Greece's start bias of hills, if they spawn with 1 hill nearby, does that satisfy their bias. Or does it require a number of hills to satisfy that bias?

 

[Arent11]

Quick google search:

https://www.reddit.com/r/civ/comments/596352/civ_6_start_biases/

"In case anyone is interested, I spent a little while digging through some civ 6 xml files and found the start biases for each civ.

Spain, England, and Norway all have tier 3 coastal bias (Firaxis says the lower the tier the higher the priority)
Norway has a tier 5 forest bias as well.
Greece has a tier 3 hills bias
Russia has a tier 3 tundra bias
Scythia actually has a tier 2 horses bias which is interesting, also a tier 5 grass and plains bias
France and Sumeria both have tier 3 river biases. Egypt has a tier 5 river bias but a tier 2 floodplains bias.
Brazil and Kongo both have a tier 2 jungle bias and Kongo also has a tier 2 forest bias.
Aztecs aren't in this file and I haven't found one for them yet but I would wager they probably have a jungle bias as well.
It also looks like the city-states of Lisbon and Nan Madol have a tier 1 coastal bias."

 

[CPL_Yoshi]

@Arent11, yeah I know this, and thank you for posting this for those that don't know, but it still doesn't answer the question I posted.

When you say "priority" what does that exactly mean? What satisfies the start bias definitions? How do we know when those conditions have been met? And what are the percentages of likelyhood based off of tiers?

Also Australia has a tier 5 cattle, horses, and sheep bias while also having a tier 3 costal bias.

 

[Victoria]

So with Greece's start bias of hills, if they spawn with 1 hill nearby, does that satisfy their bias. Or does it require a number of hills to satisfy that bias?

Unknown... I have played maybe 20 games with Gorgo lately and all start with more than one hill but once there was only 2 grassland hills.... thank goodness I have had no tundra starts.
Interestingly all but 1 had rivers.... England gets lots of non river starts as they are coastal. I suspect it's just 1 and I guess only getting at the code or having say 100 starts would provide better info.

Quick google search:

Yes, I suspect this thread was off another with those start biases... there are all the DLC ones as well, for example Aus has 4.