mirror of
https://github.com/ioquake/jedi-academy.git
synced 2024-11-25 05:31:50 +00:00
117 lines
3 KiB
C++
117 lines
3 KiB
C++
|
|
/*****************************************************************************
|
|
* name: be_ai_gen.c
|
|
*
|
|
* desc: genetic selection
|
|
*
|
|
* $Archive: /MissionPack/code/botlib/be_ai_gen.c $
|
|
* $Author: Zaphod $
|
|
* $Revision: 3 $
|
|
* $Modtime: 11/22/00 8:50a $
|
|
* $Date: 11/22/00 8:55a $
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#include "../game/q_shared.h"
|
|
#include "l_memory.h"
|
|
#include "l_log.h"
|
|
#include "l_utils.h"
|
|
#include "l_script.h"
|
|
#include "l_precomp.h"
|
|
#include "l_struct.h"
|
|
#include "aasfile.h"
|
|
#include "../game/botlib.h"
|
|
#include "../game/be_aas.h"
|
|
#include "be_aas_funcs.h"
|
|
#include "be_interface.h"
|
|
#include "../game/be_ai_gen.h"
|
|
|
|
//===========================================================================
|
|
//
|
|
// Parameter: -
|
|
// Returns: -
|
|
// Changes Globals: -
|
|
//===========================================================================
|
|
int GeneticSelection(int numranks, float *rankings)
|
|
{
|
|
float sum, select;
|
|
int i, index;
|
|
|
|
sum = 0;
|
|
for (i = 0; i < numranks; i++)
|
|
{
|
|
if (rankings[i] < 0) continue;
|
|
sum += rankings[i];
|
|
} //end for
|
|
if (sum > 0)
|
|
{
|
|
//select a bot where the ones with the higest rankings have
|
|
//the highest chance of being selected
|
|
select = random() * sum;
|
|
for (i = 0; i < numranks; i++)
|
|
{
|
|
if (rankings[i] < 0) continue;
|
|
sum -= rankings[i];
|
|
if (sum <= 0) return i;
|
|
} //end for
|
|
} //end if
|
|
//select a bot randomly
|
|
index = random() * numranks;
|
|
for (i = 0; i < numranks; i++)
|
|
{
|
|
if (rankings[index] >= 0) return index;
|
|
index = (index + 1) % numranks;
|
|
} //end for
|
|
return 0;
|
|
} //end of the function GeneticSelection
|
|
//===========================================================================
|
|
//
|
|
// Parameter: -
|
|
// Returns: -
|
|
// Changes Globals: -
|
|
//===========================================================================
|
|
int GeneticParentsAndChildSelection(int numranks, float *ranks, int *parent1, int *parent2, int *child)
|
|
{
|
|
float rankings[256], max;
|
|
int i;
|
|
|
|
if (numranks > 256)
|
|
{
|
|
botimport.Print(PRT_WARNING, "GeneticParentsAndChildSelection: too many bots\n");
|
|
*parent1 = *parent2 = *child = 0;
|
|
return qfalse;
|
|
} //end if
|
|
for (max = 0, i = 0; i < numranks; i++)
|
|
{
|
|
if (ranks[i] < 0) continue;
|
|
max++;
|
|
} //end for
|
|
if (max < 3)
|
|
{
|
|
botimport.Print(PRT_WARNING, "GeneticParentsAndChildSelection: too few valid bots\n");
|
|
*parent1 = *parent2 = *child = 0;
|
|
return qfalse;
|
|
} //end if
|
|
Com_Memcpy(rankings, ranks, sizeof(float) * numranks);
|
|
//select first parent
|
|
*parent1 = GeneticSelection(numranks, rankings);
|
|
rankings[*parent1] = -1;
|
|
//select second parent
|
|
*parent2 = GeneticSelection(numranks, rankings);
|
|
rankings[*parent2] = -1;
|
|
//reverse the rankings
|
|
max = 0;
|
|
for (i = 0; i < numranks; i++)
|
|
{
|
|
if (rankings[i] < 0) continue;
|
|
if (rankings[i] > max) max = rankings[i];
|
|
} //end for
|
|
for (i = 0; i < numranks; i++)
|
|
{
|
|
if (rankings[i] < 0) continue;
|
|
rankings[i] = max - rankings[i];
|
|
} //end for
|
|
//select child
|
|
*child = GeneticSelection(numranks, rankings);
|
|
return qtrue;
|
|
} //end of the function GeneticParentsAndChildSelection
|