A three-dimensional, real time simulation of natural selection.
Download executable from itch.io
This is a proof of concept with the intention of testing how capable today's consumer computing power is simulating artificial genepools, which are likely to contain many 3D rigidbodies.
The program is currently a 'toy'. It is not a scientific tool or a true reflection of evolution in the natural world, but will become so eventually.
It is recommended to make sure that you have checked out to the develop branch since master is likely to be out of date.
Clone this repository and open the directory as an existing project in Unity3D, open the scene named 'Main' and make sure that the script named 'Main' is attached to the GameObject named 'Main' in the hierarchy.
See the internal state of each creature by clicking on it Save/import creatures Kill creatures (works better than a stress ball)
Turn it on, do something else, come back in ~30 minutes to see the results of evolution. Watch evolution unfold in real time. Have you ever caught yourself staring at a fish tank for hours? It's kind of like that. Use it as a screensaver.
Need to improve emergend movement behavior.
All settings are contained in a JSON file in "evosim_Data/settings.json". All non-integer values must be written in the form "x.x", e.g. 3.0 There is no validation performed on these values (but there should be).
- Config:
- population_logging - Whether you want the creature count over time to be logged to a data file
- foodbit_logging - Whether you want the foodbit count over time to be logged to a data file
- log_time - How often, in seconds, you want the data to be written to the data file
- Camera:
- sensitivity - Sensitivity of camera movement controls
- invert - 1 = invert camera, 0 = don't invert camera
- Environment:
- tile_scale - Controls the size of the tiles on the plane the creatures live on; purely cosmetic
- Ether:
- total_energy - How much energy is put into the system
- starting_number_foodbits - How many foodbits the simulation starts with
- starting_creatures - How many creatures the simulation starts with
- creature_spread - The size of the area that the initial creatures are spawned in
- Foodbit:
- init_energy - How many units of energy a foodbit starts with
- destroy_at - How many units of energy at which a foodbit is destroyed
- spore_time - How often, in seconds, is a new foodbit spawned (if enough energy)
- spore_range - How far from the parent foodbit can a child spawn
- wide_spread - The size of the area that the initial foodbits are spawned in
- decay_amount - How many units of energy a foodbit decays by every
- decay_time - How often, in seconds, does the foodbit decay
- decay_rate - The probability of a foodbit decaying at decay_time
- Creature:
- MAX_ENERGY - The absolute maximum units of energy a creature can have
- init_energy - The amount of units of energy given to the initial creatures
- hunger_threshold - The energy level at which the creature becomes hungry and looks for food
- line_of_sight - How far a creature can see
- energy_to_offspring - The percentage of energy each creature gives to its offspring
- metabolic_rate - The amount of energy subtracted from a creature every second just for existing
- mate_range - The range at which one creature can mate with another
- eat_range - The range at which a creature can eat a foodbit
- eye_refresh_rate - How often, in seconds, a creature looks around and updates what they can see
- age_sexual_maturity - The age of a creature, in seconds, at which they can mate with another creature
- branch_limit - How many limbs can a creature have branching from its main body part
- recurrence_limit - How many limb segments each branch can have
- root:
- max_root_scale {x,y,z} - The maximum size of the root body part when the initial creatures are generated
- min_root_scale {x,y,z} - The minimum size of the root body part when the initial creatures are generated
- limb:
- max_limb_scale {x,y,z} - The maximum size of a limb segment when the initial creatures are generated
- min_limb_scale {x,y,z} - The minimum size of a limb segment when the initial creatures are generated
- Genitalia:
- "line_length" - The length of the line when no mate is in line of sight
- Genetics:
- crossover_rate - The probability of each gene being crossed over with a gene of a partner
- mutation_rate - The probability of each gene being mutated
- mutation_factor - By how much is a gene mutated
Evosim by Craig Lomax is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. Modifications and extensions by Barry Becker