tut_OldAgeDiePop

The class tut_OldAgeDiePop is derived from SPopulation.

Here the agents age and die after reachin an age near the maximum age.

For this the actions

are required.

(The class tut_OldAgeDiePop is described in detail in the second part of the tutorial).

Code:
tut_OldAgeDiePop.h
tut_OldAgeDiePop.cpp

Data types

The actions GetOld and OldAgeDeath expect the agents to have a float member m_fAge. Therefore, we extend the basic agent type defined in SPopulation by a float:

struct tut_OldAgeDieAgent : Agent {
    float m_fAge;
};

Public Methods

constructor

tut_OldAgeDiePop(SCellGrid *pCG, PopFinder *pPopFinder, int iLayerSize,
                 IDGen **apIDG, uint32_t *aulState, uint *aiSeeds);
pCG

Pointer to the cell grid the simulation runs on.

pPopFinder

A pointer to an instance of a PopFinder population container.

iLayerSize

The layer size used by the agent management system.

apIDG

An array of pointers to the ID generators, one for each thread.

aulState

An array of uint used to initalize the WELL512 random number generators.

aiSeeds

Seeds for other WELL512 instances not used for moving and breeding, e.g. for genetics.

This creates an instance each of GetOld and OldAgeDeath, and registers them with the Prioritizer.

destructor

~tut_OldAgeDiePop();

The destructor deletes the action objects created in the constructor.

addPopSpecificAgentData

addPopSpecificAgentData(int iAgentIndex, char **ppData);
iAgentIndex

Index of agent whose data is being read.

ppData

pointer to a string containing textual representation of data (see DAT-files).

This method expects the next string to be the age of the agent.
The next string is converted to float (this may of course fail), and ppData is modified to point to the following word.

addPopSpecificAgentDataTypeQDF

addPopSpecificAgentDataTypeQDF(hid_t *hAgentDataType);
hAgentDataType

HDF5 handle for a existin HDF data type.

This method extends the existing HDF data type by an entry for the agent’s age member.