shithub: asif

ref: d646db5e552bd420f992294e72f9fbbf98ad532d
dir: /app/path/map.c/

#include <u.h>
#include <libc.h>
#include "asif.h"
#include "graph.h"
#include "path.h"
#include "dat.h"
#include "fns.h"

int movemode;
int	(*pathfn)(Node*, Node*);

Vertex
n2s(Node *n)
{
	Vertex v;

	v = n2p(n);
	v.x = v.x * nodesz + 1;
	v.y = v.y * nodesz + 1;
	return v;
}

int
setparm(int mmode, int alg, int dist)
{
	switch(mmode){
	case Move8: /* wet floor */
	case Move4: movemode = mmode; break;
	default: sysfatal("setparm: unknown move mode %d", mmode);
	}
	switch(alg){
	case Pa∗: pathfn = a∗findpath; break;
	case Pbfs: pathfn = bfsfindpath; break;
	case Pdijkstra: pathfn = dijkstrafindpath; break;
	default: sysfatal("setparm: unknown algo type %d", alg);
	}
	switch(dist){
	case Deuclid: distfn = eucdist; break;
	case Dmanhattan: distfn = manhdist; break;
	case Doctile: distfn = octdist; break;
	default: sysfatal("setparm: unknown distance function %d", dist);
	}
	clearmap();
	return 0;
}

void
clearmap(void)
{
	start = goal = nil;
	if(grid == nil || doprof)
		return;
	cleargrid();
}

int
initmap(char *scen, char *res, Vertex v, int m, int a, int d)
{
	setparm(m, a, d);
	if(scen == nil)
		initgrid(v.x, v.y);
	else if(readscen(scen, res, &v) < 0)
		sysfatal("readscen: %r");
	return 0;
}