NAME

       crittering - Evolving Artificial Life

SYNOPSIS

       critterding [OPTION]...

DESCRIPTION

       This manual page was written for the Debian distribution because critterding does not have
       a manual page. It provides information taken from "critterding --help" output and project
       homepage.

       Critterding is a "Petri dish" universe in 3D that demonstrates evolving artificial life.
       Critters start out with completely random brains and bodies, but will automatically start
       evolving into something with much better survival skills.

       Critters are informed by sensors:

       - if their head touches food unit.
       - their head touches another critter
       - if they are able to procreate
       - about their energy state
       - about their age
       - about the state of their joints
       - what the world looks like (RGBA vision)

       Critters can make use of the following motor neurons (actions):

       - bend joint
       - bend joint in other direction
       - eat
       - procreate

       At default, the program sets up a small world with a relatively large amount of food units
       and keeps throwing in critters with randomly generated brains and bodies.

       After a while, one of these idiot critters will unavoidably be good enough to maintain a
       small population:

       Slowly but surely, their behaviour will become a lot less random as they demonstrate
       increasingly better survival skills.

KEYS

       To save current settings to a profile, press "s" in the simulation. It will be saved to
       ./default and can be loaded by using "--profile ./default"

       Use F1 in the simulation for more information about keys.

OPTIONS

       --autoload num
            autoload critters from ~/.critterding/load
            (default: 0, range: 0-1)

       --autoloadlastsaved num
            autoload critters from ~/.critterding/lastsaved
            (default: 0, range: 0-1)

       --benchmark num
            run the critterding benchmark
            (default: 0, range: 0-1)

       --body_maxbodyparts num
            maximum body parts per critter
            (default: 30, range: 0-1000000)

       --body_maxbodypartsatbuildtime num
            maximum body parts for a new critter
            (default: 6, range: 1-1000000)

       --body_maxbodypartsize num
            maximum size of a critters body part
            (default: 200, range: 1-1000000)

       --body_maxheadsize num
            maximum size of a critters head
            (default: 80, range: 1-1000000)

       --body_maxmutations num
            maximum mutations on a body mutant
            (default: 3, range: 1-1000000)

       --body_minbodypartsize num
            minimum size of a critters body part
            (default: 20, range: 1-1000000)

       --body_minheadsize num
            minimum size of a critters head
            (default: 30, range: 1-1000000)

       --body_mutationrate num
            percentage of newborns that mutate bodies
            (default: 10, range: 0-100)

       --body_percentmutateeffectaddbodypart num
            chance of adding a body part
            (default: 1, range: 0-100)

       --body_percentmutateeffectchangecolor num
            chance of changing body color
            (default: 1, range: 0-100)

       --body_percentmutateeffectchangecolor_slightly num
            chance of changing body color
            (default: 5, range: 0-100)

       --body_percentmutateeffectchangeconstraintangles num
            chance of changing a joints position angles
            (default: 1, range: 0-100)

       --body_percentmutateeffectchangeconstraintangles_slightly num
            chance of changing a joints position angles
            (default: 5, range: 0-100)

       --body_percentmutateeffectchangeconstraintlimits num
            chance of changing a joints motion limits
            (default: 1, range: 0-100)

       --body_percentmutateeffectchangeconstraintlimits_slightly num
            chance of slightly changing a joints motion limits
            (default: 5, range: 0-100)

       --body_percentmutateeffectchangeconstraintposition num
            chance of changing a joints position
            (default: 1, range: 0-100)

       --body_percentmutateeffectchangeconstraintposition_slightly num
            chance of slightly changing a joints position
            (default: 5, range: 0-100)

       --body_percentmutateeffectremovebodypart num
            chance of removing a body part
            (default: 1, range: 0-100)

       --body_percentmutateeffectrepositionhead num
            chance of repositioning head
            (default: 5, range: 0-100)

       --body_percentmutateeffectresizebodypart num
            chance of resizing a body part
            (default: 1, range: 0-100)

       --body_percentmutateeffectresizebodypart_slightly num
            chance of slightly resizing a body part
            (default: 5, range: 0-100)

       --body_percentmutateeffectresizehead num
            chance of resizing a head
            (default: 1, range: 0-100)

       --body_percentmutateeffectresizehead_slightly num
            chance of slightly resizing a head
            (default: 5, range: 0-100)

       --brain_costfiringmotorneuron num
            cost of firing a motor neuron
            (default: 100, range: 0-1000000)

       --brain_costfiringneuron num
            cost of firing a neuron
            (default: 10, range: 0-1000000)

       --brain_costhavingneuron num
            cost of having a neuron (1/100000 energy)
            (default: 50, range: 0-1000000)

       --brain_costhavingsynapse num
            cost of having a synapse
            (default: 1, range: 0-1000000)

       --brain_maxdendridicbranches num
            maximum number of dendrites per neuron
            (default: 3, range: 1-1000000)

       --brain_maxfiringthreshold num
            maximum firingthreshold of a neuron
            (default: 10, range: 1-1000000)

       --brain_maxmutations num
            maximum mutations on a brain mutant
            (default: 10, range: 1-1000000)

       --brain_maxneurons num
            maximum neurons per critter
            (default: 1000, range: 1-1000000)

       --brain_maxneuronsatbuildtime num
            maximum neurons for a new critter
            (default: 200, range: 1-1000000)

       --brain_maxplasticitystrengthen num
            maximum weight by which plastic synapses strengthen
            (default: 1000, range: 1-1000000)

       --brain_maxplasticityweaken num
            maximum weight by which plastic synapses weaken
            (default: 10000, range: 1-1000000)

       --brain_maxsynapses num
            maximum synapses per neuron
            (default: 100, range: 1-1000000)

       --brain_maxsynapsesatbuildtime num
            maximum synapses for a new neuron of a new critter
            (default: 40, range: 1-1000000)

       --brain_minfiringthreshold num
            minimum firingthreshold of a neuron
            (default: 2, range: 1-1000000)

       --brain_minneuronsatbuildtime num
            minimum neurons for a new critter
            (default: 50, range: 1-1000000)

       --brain_minplasticitystrengthen num
            minimum weight by which plastic synapses strengthen
            (default: 100, range: 1-1000000)

       --brain_minplasticityweaken num
            minimum weight by which plastic synapses weaken
            (default: 1000, range: 1-1000000)

       --brain_minsynapses num
            minimum synapses per neuron
            (default: 1, range: 1-1000000)

       --brain_minsynapsesatbuildtime num
            minimum synapses for a new neuron
            (default: 1, range: 1-1000000)

       --brain_mutate_maxdendridicbranches num
            mutate this value
            (default: 0, range: 0-1)

       --brain_mutate_maxfiringthreshold num
            mutate this value
            (default: 0, range: 0-1)

       --brain_mutate_minfiringthreshold num
            mutate this value
            (default: 0, range: 0-1)

       --brain_mutate_mutateeffects num
            mutate mutation effects
            (default: 0, range: 0-1)

       --brain_mutate_percentchanceconsistentsynapses num
            mutate this value
            (default: 0, range: 0-1)

       --brain_mutate_percentchanceinhibitoryneuron num
            mutate this value
            (default: 0, range: 0-1)

       --brain_mutate_percentchanceinhibitorysynapses num
            mutate this value
            (default: 0, range: 0-1)

       --brain_mutate_percentchancemotorneuron num
            mutate this value
            (default: 0, range: 0-1)

       --brain_mutate_percentchanceplasticneuron num
            mutate this value
            (default: 0, range: 0-1)

       --brain_mutate_percentchancesensorysynapse num
            mutate this value
            (default: 0, range: 0-1)

       --brain_mutate_plasticityfactors num
            mutate min/max plasticity values
            (default: 0, range: 0-1)

       --brain_mutationrate num
            percentage of newborns that mutate brains
            (default: 10, range: 0-100)

       --brain_percentchanceconsistentsynapses num
            percent chance a neurons synapses are all inhibitory or excitatory
            (default: 0, range: 0-100)

       --brain_percentchanceinhibitoryneuron num
            percent chance a neuron is inhibotory
            (default: 50, range: 0-100)

       --brain_percentchanceinhibitorysynapses num
            percent chance a synapse is inhibitory
            (default: 50, range: 0-100)

       --brain_percentchancemotorneuron num
            percent chance a neuron is a motor neuron
            (default: 50, range: 0-100)

       --brain_percentchanceplasticneuron num
            percent chance a neuron has plastic synapses
            (default: 20, range: 0-100)

       --brain_percentchancesensorysynapse num
            percent change a synapse connects to an input
            (default: 20, range: 0-100)

       --brain_percentmutateeffectaddneuron num
            chance of adding a neuron
            (default: 1, range: 0-100)

       --brain_percentmutateeffectaddsynapse num
            chance of adding a synapse
            (default: 5, range: 0-100)

       --brain_percentmutateeffectaltermutable num
            mutate value of a mutatable option
            (default: 1, range: 0-100)

       --brain_percentmutateeffectalterneuron num
            chance of altering a neuron
            (default: 2, range: 0-100)

       --brain_percentmutateeffectremoveneuron num
            chance of removing a neuron
            (default: 1, range: 0-100)

       --brain_percentmutateeffectremovesynapse num
            chance of removing a synapse
            (default: 5, range: 0-100)

       --camerasensitivity num
            sensitivity of the camera
            (default: 20, range: 1-1000)

       --colormode num
            colors genetically exact critters identically
            (default: 0, range: 0-1)

       --critter_autoexchangeinterval num
            save critters every n seconds
            (default: 0, range: 0-1000000)

       --critter_autosaveinterval num
            save critters every n seconds
            (default: 0, range: 0-1000000)

       --critter_enableomnivores num
            enables critters to eat each other
            (default: 1, range: 0-1)

       --critter_insertevery num
            inserts a random critter every n frames
            (default: 0, range: 0-1000000)

       --critter_killhalfat num
            kill 50% of critters if population reaches n
            (default: 120, range: 2-1000000)

       --critter_maxenergy num
            maximum amount of energy a critter has
            (default: 5000, range: 1-1000000)

       --critter_maxlifetime num
            maximum number of frames a critter lives
            (default: 40000, range: 1-1000000)

       --critter_minenergyproc num
            energy a critters needs to procreate
            (default: 3000, range: 1-1000000)

       --critter_procinterval num
            minimum frames between procreations
            (default: 20, range: 1-1000000)

       --critter_raycastvision num
            use raycast vision instead of opengl
            (default: 0, range: 0-1)

       --critter_retinasize num
            size of a critters eye retina
            (default: 8, range: 1-1000)

       --critter_sightrange num
            distance a critter can see (10 = 1 worldsize)
            (default: 70, range: 1-1000000)

       --critter_startenergy num
            energy a new critter (adam) starts with
            (default: 3000, range: 1-1000000)

       --drawscene num
            draw the scene
            (default: 1, range: 0-1)

       --energy num
            energy in the system by number of food cubes
            (default: 400, range: 0-1000000)

       --exit_if_empty num
            exit simulation if there are no critters
            (default: 0, range: 0-1)

       --food_maxenergy num
            maximum amount of energy a food unit has
            (default: 1500, range: 1-1000000)

       --food_maxlifetime num
            maximum number of frames a food unit exists
            (default: 40000, range: 1-1000000)

       --food_size num
            size of a food unit
            (default: 200, range: 1-1000000)

       --fpslimit num
            frames per second for the fps limiter
            (default: 30, range: 1-1000)

       --fsX num
            fullscreen resolution X
            (default: 800, range: 1-1000000)

       --fsY num
            fullscreen resolution Y
            (default: 600, range: 1-1000000)

       --fullscreen num
            enable fullscreen mode
            (default: 0, range: 0-1)

       --headless num
            do not open gl context
            (default: 0, range: 0-1)

       --killhalf_decrenergypct num
            decrease energy by n percent when killhalfat triggers
            (default: 1, range: 0-100)

       --killhalf_decrmaxlifetimepct num
            decrease critter_maxlifetime by n when killhalfat triggers
            (default: 0, range: 0-100)

       --killhalf_incrworldsizeX num
            increase worldsizeX by n when killhalfat triggers
            (default: 0, range: 0-100)

       --killhalf_incrworldsizeY num
            increase worldsizeY by n when killhalfat triggers
            (default: 0, range: 0-100)

       --mincritters num
            minimum number of critters
            (default: 10, range: 0-1000)

       --race num
            enable race simulation
            (default: 0, range: 0-1)

       --retinasperrow num
            number of vision retinas to stack per row onscreen
            (default: 20, range: 1-1000)

       --roundworld num
            enable round planet
            (default: 0, range: 0-1)

       --startseed num
            enable fullscreen mode
            (default: 0, range: 0-4000000000)

       --testworld num
            a world for test purposes
            (default: 0, range: 0-1)

       --threads num
            threads to use
            (default: 1, range: 1-16)

       --worldsizeX num
            size of the world along axis X
            (default: 23, range: 1-5000)

       --worldsizeY num
            size of the world along axis Y
            (default: 13, range: 1-5000)

       --worldwalls num
            enable walls around the world
            (default: 1, range: 0-1)

SEE ALSO

        http://critterding.sourceforge.net/