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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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