Rapid Evolution for 3.7+

Inspired by a suggestion by Marble in the Stellaris Modding Den, this mod causes presapient species to randomly spawn and develop sapience. It also increases the variety of presapient species portraits at the expense of decreasing their typical quality.

Presapient Spawning

New pre-sapient species will sometimes spawn at random at a rate scaling with the "Primitive Civilizations" game setting and galaxy size. This spawning rate will be lower on highly developed planets with weak environmental protections. In an empty medium-sized galaxy with 1x primitives, on average one presapient species will spawn every 80 years.

With Lithoids, presapient species have a roughly 4% chance to be Calamitously Born, with the associated planet modifiers; if this happens on an inhabited planet, the effect will first trigger the Asteroid Sighted event chain and the presapients will spawn only if the asteroid hits.

Developing Sapience

Pre-sapients will sometimes spontaneously evolve sapience. The length of time this takes for each species is random, and the average depends on the "Habitable Planets" game setting, ranging from 1200 years at 5x habitable planets to 390 years at 0.25x habitable planets.

When a species becomes sapient this way, they will lose their presapient trait, but will usually gain some regular traits based on it, and will gain some random traits as well. If they were on a colony of a non-primitive empire, they will receive a citizenship type depending on the country’s pre-sapients policy. If they shared a planet with an existing primitive civilization, they will become Serviles if they had the "Proles" or "Conservative" trait. If they are on an otherwise uninhabited planet, they will become a new stone aged primitive civilization with 0 tech progress.

Emerging Subterraneans

Occasionally a subterranean civilization will emerge. This happens at a rate scaling with the "Primitive Civilizations" game setting and with galaxy size. In a medium-sized galaxy with 1x primitives it will happen on average around once per 2000 years. On an uninhabited planet, this simply spawns a new primitive civilization with the "Subterranean" origin. On an inhabited planet, it triggers the "Seismic Disturbances" event chain.

More Presapient Portraits

Rather than being limited to a small subset of portraits, pre-sapients can now have almost any portrait from vanilla except robotic portraits. Humanoid presapients in general will only spawn if the HumanoidsLC is active. The added presapient portraits are just the sapient ones minus clothes, so some are kind of ugly.

• This does not include DLC-exclusice portraits (for the sake of legal compliance and not requiring extra DLC), but if you want those you can also download this mod

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Compatibility:

This mod overwrites the following files and items from the base game and will be incompatible with other mods which overwrite any of the same things:

Scripted Effects:

• create_random_devolved_species
• create_devolved_species
• asteroid_impact_pre_ftl_effect
• spawn_presapient_species_randomizer_effect
• create_generic_presapient_species

Species Classes:

• PRE_MAM
• PRE_REP
• PRE_AVI
• PRE_ART
• PRE_MOL
• PRE_FUN
• PRE_PLANT
• PRE_LITHOID
• PRE_AQUATIC
• PRE_TOX

Events:

• colony.50 (Seismic Disturbances)
• colony.180 (Asteroid Sighted)
• colony.183 (Asteroid Impacts Planet)
• distar.260 (Wild Eukaryotes)
• galactic_features.104 (Nuclear Devastation)
• observation.0 (Asteroid Approaching Planet)
• terra.80 (Radioactive Flora)

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