Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>
#include <draw.h>

#include "sokoban.h"

void
initanimation(Animation *a)
{
        if (a == nil)
                return;

        memset(a, 0, sizeof(Animation));
}

void
setupanimation(Animation *a, Route *r)
{
        if (a == nil || r == nil || r->step == nil)
                return;

        a->route = r;
        a->step = r->step;
        if (a->step < a->route->step + a->route->nstep)
                a->count = a->step->count;
        else
                stopanimation(a);
}

int
onestep(Animation *a)
{
        if (a == nil)
                return 0;

        if (a->count > 0 && a->step != nil && a->route != nil) {
                move(a->step->dir);
                a->count--;
                if (a->count == 0) {
                        a->step++;
                        if (a->step < a->route->step + a->route->nstep)
                                a->count = a->step->count;
                        else
                                stopanimation(a);
                }
        } else if (a->count > 0 && (a->step == nil || a->route == nil))
                stopanimation(a);
        return (a->count > 0);
}

void
stopanimation(Animation *a)
{
        if (a == nil)
                return;

        if (a->route != nil)
                freeroute(a->route);
        memset(a, 0, sizeof(Animation));
}