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#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));
}
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