Linux Manual Pages

Free Software * Books

Source Code

Free Media

Linux

critterding(1)

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)

Opportunity

Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.

Free Software

Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.

Free Books

The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.

Education

Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.