// phmap1.h  MR May 2001
//
// Pheromone Map, for quick determining of distance to
// nearest pheromone-emitting entity on/in a chessboard world.
// 
// See comments / usage guidelines / documentation in file 'phmap1.c'.

#ifndef _PHMAP1_H_
#define _PHMAP1_H_


#include <stdio.h>


void phmap_init(
	int * pmap,
	int xsize,
	int ysize );

void phmap_enteremitter(
	int * pmap,
	int xsize,
	int ysize,
	int ix,
	int iy );

void phmap_calc(
	int * pmap,
	int xsize,
	int ysize );

int phmap_getdist(
	const int * pmap,
	int xsize,
	int ysize,
	int ix,
	int iy );

void phmap_fprint(  // (For testing purposes)
	FILE * fp,
	const int * pmap,
	int xsize,
	int ysize );


#endif // _PHMAP1_H_