Created by Scott Robert Ladd at Coyote Gulch Productions.
An evolving organism. More...
#include <organism.h>
Public Member Functions | |
organism () | |
Creation constructor. More... | |
organism (const Genotype &a_genes) | |
Value constructor. More... | |
organism (const organism &a_source) | |
Copy constructor. More... | |
virtual | ~organism () |
Virtual destructor. More... | |
organism & | operator= (const organism &a_source) |
assignment operator More... | |
organism & | operator= (const Genotype &a_genes) |
assignment operator More... | |
virtual bool | operator< (const organism &a_right) const |
Comparison operator for algorithms. More... | |
virtual void | reset () |
Resets an object to it's initial state. More... | |
Public Attributes | |
double | fitness |
Genotype | genes |
Additional Inherited Members | |
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static size_t | rand_index (size_t n) |
Static function to allow use of g_random function pointer in random_shuffle. | |
static void | set_seed (uint32_t a_seed) |
Set the seed for the random number generator. | |
static uint32_t | get_seed () |
Set the seed for the random number generator. | |
static std::string | version () |
Get version number. | |
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static prng | g_random |
A shared random number generator. | |
static std::string | g_version |
Version number. | |
An organism is a solution to a problem posed by a fitness landscape; it has "genes" that define its behavior, and a fitness value assigned during fitness testing.
Evocosm provides the freedom to define organisms as anything: bit strings, floating-point numbers, finite state machines, LISP programs, or external robots controlled via radio waves.
Genotype | - The type of genes for this organism class |
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Creates a new organism, with default genes and zero fitness.
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Creates a new organism with specific genes.
a_genes | - Gene value for the new organism |
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Creates a new object identical to an existing one.
a_source | - The source object |
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A virtual destructor. By default, it does nothing; this is a placeholder that identifies this class as a potential base, ensuring that objects of a derived class will have their destructors called if they are destroyed through a base-class pointer.
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Many Standard C++ algorithms require a "less than" comparison operator for container elements.
a_right | - Right hand argument for less than operator |
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Assigns an existing object the state of another.
a_source | - The source object |
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Assigns an existing object the state of another.
a_genes | - The source object |
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Resets all data in an organisim to the initial (or startup) state, including setting the fitness to zero. Derived classes should override this method to "clear" any data.
double libevocosm::organism< Genotype >::fitness |
Fitness is assigned by the landscape in which an organism is tested. A scaler object may alter fitness values after testing; a selector uses fitness to determine which organisms survive from one generation to the next, and a reproducer creates new organisms from parents selected by fitness.
Referenced by libevocosm::organism< vector< double > >::operator<(), libevocosm::organism< vector< double > >::operator=(), and libevocosm::function_landscape::test().
Genotype libevocosm::organism< Genotype >::genes |
Genes define an organism's behavior in a fitness landscape. An initial population usually (but not always) contains organisms with random genes; a landscape tests the behavior defined by genes to calculate the fitness of an organism. A reproducer will create children from the genes of their parents, and a mutator may make random changes in those genes.
Referenced by libevocosm::organism< vector< double > >::operator=(), and libevocosm::function_landscape::test().
© 1996-2005 Scott Robert Ladd. All rights reserved.
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